BOKF 10-K Annual Report Dec. 31, 2015 | Alphaminr
BOK FINANCIAL CORP ET AL

BOKF 10-K Fiscal year ended Dec. 31, 2015

BOK FINANCIAL CORP ET AL
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10-K 1 a20151231bokf10k.htm 10-K 10-K


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K
(Mark One)
ý
ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended December 31, 2015
OR
¨
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from _____________ to ______________

Commission File No. 0-19341

BOK FINANCIAL CORPORATION
(Exact name of registrant as specified in its charter)
Oklahoma
73-1373454
(State or other jurisdiction
of Incorporation or Organization)
(IRS Employer
Identification No.)
Bank of Oklahoma Tower
Boston Avenue at Second Street
Tulsa, Oklahoma
74172
(Address of Principal Executive Offices)
(Zip Code)
(918) 588-6000
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12 (b) of the Act:  None

Securities registered pursuant to Section 12 (g) of the Act:
Common stock, $0.00006 par value

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes ý No ¨

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 (d) of the Act.  Yes ¨ No ý

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.       Yes ý No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter)during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files)Yes ý No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company.  See definitions of “larger accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.  (Check one):
Large accelerated filer ý Accelerated filer ¨ Non-accelerated filer ¨ Smaller reporting company ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes ¨ No ý

The aggregate market value of the registrant's common stock ("Common Stock") held by non-affiliates is approximately $1.5 billion (based on the June 30, 2015 closing price of Common Stock of $69.58 per share). As of January 31, 2016 , there were 66,119,435 shares of Common Stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Part III incorporates certain information by reference from the Registrant’s Proxy Statement for the 2016 Annual Meeting of Shareholders.





BOK Financial Corporation
Form 10-K
Year Ended December 31, 2015

Index

Item 1
Item 1A
Item 1B
Item 2
Item 3
Item 4
Item 5
Item 6
Item 7
Item 7A
Item 8
Item 9
Item 9A
Item 9B
Item 10
Item 11
Item 12
Item 13
Item 14
Item 15
Exhibit 10.4.10
Employment Agreement - Stacy Kymes
Exhibit 21
Subsidiaries of the Registrant
Exhibit 23
Consent of Independent Registered Public Accounting Firm
Exhibit 31.1
Chief Executive Officer Section 302 Certification
Exhibit 31.2
Chief Financial Officer Section 302 Certification
Exhibit 32
Section 906 Certifications






PART I

ITEM 1.   BUSINESS

General

Developments relating to individual aspects of the business of BOK Financial Corporation (“BOK Financial” or “the Company”) are described below. Additional discussion of the Company’s activities during the current year appears within Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Description of Business

BOK Financial is a financial holding company incorporated in the state of Oklahoma in 1990 whose activities are governed by the Bank Holding Company Act of 1956 (“BHCA”), as amended by the Financial Services Modernization Act or Gramm-Leach-Bliley Act and the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "Dodd-Frank Act"). BOK Financial offers full service banking in Oklahoma, Texas, New Mexico, Northwest Arkansas, Colorado, Arizona, and Kansas/Missouri. At December 31, 2015 , the Company reported total consolidated assets of $31 billion and ranked as the 53rd largest bank holding company based on asset size.

BOKF, NA (“the Bank”) is a wholly owned subsidiary bank of BOK Financial. BOKF, NA operates TransFund, Cavanal Hill Investment Management, BOK Financial Asset Management, Inc. and seven banking divisions: Bank of Albuquerque, Bank of Arizona, Bank of Arkansas, Bank of Kansas City, Bank of Oklahoma, Bank of Texas and Colorado State Bank and Trust. Other wholly owned subsidiaries of BOK Financial include BOSC, Inc., a broker/dealer that engages in retail and institutional securities sales and municipal bond underwriting and The Milestone Group, Inc., an investment adviser to high net worth clients. Other non-bank subsidiary operations do not have a significant effect on the Company’s financial statements.

Our overall strategic objective is to emphasize growth in long-term value by building on our leadership position in Oklahoma through expansion into other high-growth markets in contiguous states. We operate primarily in the metropolitan areas of Tulsa and Oklahoma City, Oklahoma; Dallas, Fort Worth and Houston, Texas; Albuquerque, New Mexico; Denver, Colorado; Phoenix, Arizona, and Kansas City, Kansas/Missouri. Our acquisition strategy targets fairly priced quality organizations with demonstrated solid growth that would supplement our principal lines of business. We provide additional growth opportunities by hiring talent to enhance competitiveness, adding locations and broadening product offerings. Our operating philosophy embraces local decision-making in each of our geographic markets while adhering to common Company standards.

Our primary focus is to provide a comprehensive range of nationally competitive financial products and services in a personalized and responsive manner. Products and services include loans and deposits, cash management services, fiduciary services, mortgage banking and brokerage and trading services to middle-market businesses, financial institutions and consumers. Commercial banking represents a significant part of our business. Our credit culture emphasizes building relationships by making high quality loans and providing a full range of financial products and services to our customers. Our energy financing expertise enables us to offer commodity derivatives for customers to use in their risk management. We also offer derivative products for customers to use in managing their interest rate and foreign exchange risk. Our diversified base of revenue sources is designed to generate returns in a range of economic situations. Historically, fees and commissions provide 43% to 49% of our total revenue. Approximately 48% of our revenue came from fees and commissions in 2015 .

BOK Financial’s corporate headquarters is located at Bank of Oklahoma Tower, Boston Avenue at Second Street, Tulsa, Oklahoma 74172.

The Company’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports are available on the Company’s website at www.bokf.com as soon as reasonably practicable after the Company electronically files such material with or furnishes it to the Securities and Exchange Commission.


1



Operating Segments

BOK Financial operates three principal lines of business: Commercial Banking, Consumer Banking and Wealth Management. Commercial Banking includes lending, treasury and cash management services and customer risk management products for small businesses, middle market and larger commercial customers. Commercial Banking also includes the TransFund electronic funds network. Consumer Banking includes retail lending and deposit services, lending and deposit services to small business customers served through the retail branch network and all mortgage banking activities. Wealth Management provides fiduciary services, private bank services and investment advisory services in all markets. Wealth Management also underwrites state and municipal securities and engages in brokerage and trading activities. Discussion of these principal lines of business appears within the Lines of Business section of “Management's Discussion and Analysis of Financial Condition and Results of Operations” and within Note 17 of the Company’s Notes to Consolidated Financial Statements, both of which appear elsewhere herein.

Competition

BOK Financial and its operating segments face competition from other banks, thrifts, credit unions and other non-bank financial institutions, such as investment banking firms, investment advisory firms, brokerage firms, investment companies, government agencies, mortgage brokers and insurance companies. The Company competes largely on the basis of customer services, interest rates on loans and deposits, lending limits and customer convenience. Some operating segments face competition from institutions that are not as closely regulated as banks, and therefore are not limited by the same capital requirements and other restrictions. All market share information presented below is based upon share of deposits in specified areas according to SNL DataSource as of June 30, 2015 .

We are the largest financial institution in the state of Oklahoma with 15% of the state’s total deposits. Bank of Oklahoma has 32% and 13% of the market share in the Tulsa and Oklahoma City areas, respectively. We compete with two banks that have operations nationwide and have greater access to funds at lower costs, higher lending limits, and greater access to technology resources. We also compete with regional and locally-owned banks in both the Tulsa and Oklahoma City areas, as well as in every other community in which we do business throughout the state.

Bank of Texas competes against numerous financial institutions, including some of the largest in the United States, and has a market share of approximately 2% in the Dallas, Fort Worth area and less than 1% in the Houston area. Bank of Albuquerque has a number four market share position with 9% of deposits in the Albuquerque area and competes with four large national banks, some regional banks and several locally-owned smaller community banks. Colorado State Bank and Trust has a market share of approximately 2% in the Denver area. Bank of Arkansas serves Benton and Washington counties in Arkansas with a market share of approximately 4%. Bank of Arizona operates as a community bank with locations in Phoenix, Mesa and Scottsdale with a market share of approximately 1%. Bank of Kansas City serves the Kansas City, Kansas/Missouri market with a market share of approximately 2%. The Company’s ability to expand into additional states remains subject to various federal and state laws.

Employees

As of December 31, 2015 , BOK Financial and its subsidiaries employed 4,789 full-time equivalent employees. None of the Company’s employees are represented by collective bargaining agreements. Management considers its employee relations to be good.

Supervision and Regulation

BOK Financial and its subsidiaries are subject to extensive regulations under federal and state laws. These regulations are designed to promote safety and soundness, protect consumers and ensure the stability of the banking system as a whole. The purpose of these regulations is not necessarily to protect shareholders and creditors. As detailed below, these regulations require the Company and its subsidiaries to maintain certain capital balances and require the Company to provide financial support to its subsidiaries. These regulations may restrict the Company’s ability to diversify, to acquire other institutions and to pay dividends on its capital stock. These regulations also include requirements on certain programs and services offered to our customers, including restrictions on fees charged for certain services.

The following information summarizes certain existing laws and regulations that affect the Company’s operations. It does not summarize all provisions of these laws and regulations and does not include all laws and regulations that affect the Company presently or in the future.


2



General

As a financial holding company, BOK Financial is regulated under the BHCA and is subject to regular inspection, examination and supervision by the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”). Under the BHCA, BOK Financial files quarterly reports and other information with the Federal Reserve Board.

The Bank is organized as a national banking association under the National Banking Act, and is subject to regulation, supervision and examination by the Office of the Comptroller of the Currency (the “OCC”), the Federal Deposit Insurance Corporation (the “FDIC”), the Federal Reserve Board, the Consumer Financial Protection Bureau and other federal and state regulatory agencies. The OCC has primary supervisory responsibility for national banks and must approve certain corporate or structural changes, including changes in capitalization, payment of dividends, change of place of business, and establishment of a branch or operating subsidiary. The OCC performs examinations concerning safety and soundness, the quality of management and directors, information technology and compliance with applicable regulations. The National Banking Act authorizes the OCC to examine every national bank as often as necessary.

A financial holding company, and the companies under its control, are permitted to engage in activities considered “financial in nature” as defined by the BHCA, Gramm-Leach-Bliley Act and Federal Reserve Board interpretations. Activities that are “financial in nature” include securities underwriting and dealing, insurance underwriting, merchant banking, operating a mortgage company, performing certain data processing operations, servicing loans and other extensions of credit, providing investment and financial advice, owning and operating savings and loan associations, and leasing personal property on a full pay-out, non-operating basis. A financial holding company is required to notify the Federal Reserve Board within thirty days of engaging in new activities determined to be “financial in nature.” BOK Financial is engaged in some of these activities and has notified the Federal Reserve Board.

In order for a financial holding company to commence any new activity permitted by the BHCA, each insured depository institution subsidiary of the financial holding company must be "well capitalized" and "well managed" and received a rating of at least "satisfactory" in its most recent examination under the Community Reinvestment Act. A financial holding company and its depository institution subsidiaries are considered to be "well capitalized" if they meet the requirements discussed in the section captioned "Capital Adequacy and Prompt Corrective Action" which follows. A financial holding company and its depository institution subsidiaries are considered to be "well managed" if they receive a composite rating and management rating of at least "satisfactory" in their most recent examinations. If a financial holding company fails to meet these requirements, the Federal Reserve Board may impose limitations or conditions on the conduct of its activities and the company may not commence any new financial activities without prior approval.

The BHCA requires the Federal Reserve Board’s prior approval for the direct or indirect acquisition of more than five percent of any class of voting stock of any non-affiliated bank. Under the Federal Bank Merger Act, the prior approval of the OCC is required for a national bank to merge with another bank or purchase the assets or assume the deposits of another bank. In reviewing applications seeking approval of merger and acquisition transactions, the bank regulatory authorities consider, among other things, the competitive effect and public benefits of the transactions, the capital position of the combined organization, the applicant’s performance record under the Community Reinvestment Act and fair housing laws and the effectiveness of the subject organizations in combating money laundering activities.

A financial holding company and its subsidiaries are prohibited under the BHCA from engaging in certain tie-in arrangements in connection with the provision of any credit, property or services. Thus, a subsidiary of a financial holding company may not extend credit, lease or sell property, furnish any services or fix or vary the consideration for these activities on the condition that (1) the customer obtain or provide additional credit, property or services from or to the financial holding company or any subsidiary thereof, or (2) the customer may not obtain some other credit, property or services from a competitor, except to the extent reasonable conditions are imposed to insure the soundness of credit extended.

The Bank and other non-bank subsidiaries are also subject to other federal and state laws and regulations. For example, BOSC, Inc. is regulated by the Securities and Exchange Commission (“SEC”), the Financial Industry Regulatory Authority (“FINRA”), the Federal Reserve Board, and state securities regulators. Such regulations generally include licensing of certain personnel, customer interactions, and trading operations.



3



Dodd-Frank Wall Street Reform and Consumer Protection Act

On July 21, 2010, the Dodd-Frank Act was signed into law, giving federal banking agencies authority to increase regulatory capital requirements, impose additional rules and regulations over consumer financial products and services and limit the amount of interchange fees that may be charged in an electronic debit transaction. In addition, the Dodd-Frank Act made permanent the $250,000 limit for federal deposit insurance. It also repealed prohibitions on payment of interest on demand deposits, which could impact how interest is paid on business transaction and other accounts. Further, the Dodd-Frank Act prohibits banking entities from engaging in proprietary trading and restricts banking entities sponsorship of or investment in private equity funds and hedge funds. Final rules required to implement the Dodd-Frank Act have largely been issued. Many of these rules have extended phase-in periods and the full impact of this legislation on the banking industry, including the Company, remains unknown.

The Durbin Amendment to the Dodd-Frank Act required that interchange fees on electronic debit transactions paid by merchants must be “reasonable and proportional to the cost incurred by the issuer” and prohibited card network rules that have limited price competition among networks. Effective October 1, 2011, the Federal Reserve issued its final ruling to implement the Durbin Amendment. This ruling established a cap on interchange fees banks with more than $10 billion in total assets can charge merchants for certain debit card transactions. The Durbin Amendment also required all banks to comply with the prohibition on network exclusivity and routing requirements. Debit card issuers are required to make at least two unaffiliated networks available to merchants.

The Dodd-Frank Act established the Consumer Financial Protection Bureau ("CFPB") with powers to supervise and enforce consumer protection laws. The CFPB has broad rule-making authority for a wide range of consumer protection laws that apply to all banks and savings institutions, including the authority to prohibit "unfair, deceptive or abusive" acts and practices. Established July 21, 2011, the CFPB has examination and enforcement authority over all banks and savings institutions with more than $10 billion in assets for certain designated consumer laws and regulations. The CFPB issued mortgage servicing standards and mortgage lending rules, including “qualified mortgage” rules that are designed to protect consumers and ensure the reliability of mortgages. Mortgage lenders are required to make a reasonable and good faith determination based on verified and documented information that a consumer applying for a mortgage loan has a reasonable ability to repay the loan according to its terms. Qualified mortgages that meet this requirement and other specified criteria are given a safe harbor of compliance. Rules affecting mortgage lenders and servicers became effective on January 10, 2014.

Title VI of the Dodd-Frank Act, commonly known as the Volcker Rule, prohibits banking entities from engaging in proprietary trading as defined by the Dodd-Frank Act and restricts sponsorship of, or investment in, private equity funds and hedge funds, subject to limited exceptions and exclusions. In December 2013, Federal banking agencies approved regulations that implement the Volcker Rule. In December 2014, the Federal Reserve extended the conformance period for key elements of the Rule relating to relationships with funds until July 2017. The Company’s private equity investment activities will be curtailed. The Company’s trading activity were largely unaffected, as most trading activities are exempted or excluded from the Volcker Rule trading prohibitions.

Title VII of the Dodd-Frank Act subjects nearly all derivative transactions to the regulations of the Commodity Futures Trading Commission (“CFTC”) or SEC. This includes registration, recordkeeping, reporting, capital, margin and business conduct requirements on swap dealers and major swap participants. The CFTC and SEC both approved interim final rules on the definition "swap" and “swap dealer" which were effective October 2012. Under these rules, entities transacting in less than $8 billion in notional value of swaps over any 12 month period during the first three years after these rules are effective will be exempt from the definition of "swap dealer." After December 2017, this threshold may be reduced to $3 billion subject to the results of studies the commissions intend to undertake once the derivative rules are effective. The Company currently estimates that the nature and volume of swap activity will not require it to register as a swap dealer any time prior to December 2017. Although the ultimate impact of Title VII remains uncertain, we currently believe its full implementation is likely not to impose significantly higher compliance costs on the Company.





4



Capital Adequacy and Prompt Corrective Action

The Federal Reserve Board, the OCC and the FDIC have issued substantially similar risk-based and leverage capital guidelines applicable to United States banking organizations to ensure capital adequacy based upon the risk levels of assets and off-balance sheet financial instruments. In addition, these regulatory agencies may from time to time require that a banking organization maintain capital above the minimum levels, whether because of its financial condition or actual or anticipated growth. Capital adequacy guidelines and prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators regarding components, risk weighting and other factors.

Prior to January 1, 2015, the Federal Reserve Board risk-based guidelines defined a three-tier capital framework. Core capital (Tier 1) included common shareholders' equity and qualifying preferred stock, less goodwill, most intangible assets and other adjustments. Supplementary capital (Tier 2) consisted of preferred stock not qualifying as Tier 1 capital, qualifying mandatory convertible debt securities, limited amounts of subordinated debt, other qualifying term debt and allowances for credit losses, subject to limitations. Market risk capital (Tier 3) included qualifying unsecured subordinated debt. Assets and off-balance sheet exposures were assigned to one of four categories of risk-weights, based primarily upon relative credit risk. Risk-based capital ratios are calculated by dividing Tier 1 and total capital by risk-weighted assets.

New capital rules were effective for banks and bank holding companies, including BOK Financial on January 1, 2015 as part of a package of regulatory reforms developed by the Basel Committee on Banking Supervision ("BCBS") to strengthen the regulation, supervision and risk management of the banking sector, commonly referred to as the Basel III framework. Components of these rules will phase in through January 1, 2019. The new capital rules reduced instruments that qualify as regulatory capital and generally increased risk weighted assets. The new capital rules established a 7% threshold for common equity Tier 1 ratio consisting of a minimum level plus a capital conservation buffer. The rules also changed both the Tier 1 risk based capital requirements and the total risk based requirements to a minimum of 6% and 8%, respectively, plus a capital conservation buffer of 2.5% totaling 8.5% and 10.5%, respectively. The Company elected to exclude unrealized gains and losses from available for sale securities from its calculation of Tier 1 capital, consistent with the treatment under previous capital rules.

As of December 31, 2015 , BOK Financial's common equity Tier 1 ratio was 12.13% . BOK Financial's Tier 1 and total capital were 12.13% and 13.30% , respectively.

The leverage ratio is determined by dividing Tier 1 capital by adjusted average total assets. Banking organizations are required to maintain a ratio of at least 4%. A bank which falls below these levels, including the capital conservation buffer, would be subject to regulatory restrictions on capital distributions (including but not limited to dividends and share repurchases) and executive bonus payments. BOK Financial's leverage ratio at December 31, 2015 was 9.25% .

The Federal Deposit Insurance Corporation Improvement Act of 1991 (the “FDICIA”), among other things, identifies five capital categories for insured depository institutions from well capitalized to critically undercapitalized and requires the respective federal regulatory agencies to implement systems for prompt corrective action for institutions failing to meet minimum capital requirements within such categories. FDICIA imposes progressively more restrictive covenants on operations, management and capital distributions, depending upon the category in which an institution is classified. The various regulatory agencies have adopted substantially similar regulations that define the five capital categories identified by FDICIA, using the total risk-based capital, Tier 1 risk-based capital and leverage capital ratios as the relevant capital measures. Such regulations establish various degrees of corrective action to be taken when an institution is considered undercapitalized. Under these guidelines, the Bank was considered well capitalized as of December 31, 2015 .

Liquidity Requirements

The Basel III framework also requires bank holding companies and banks to measure their liquidity against specific liquidity tests. One test, referred to as the liquidity coverage ratio, is designed to ensure that the banking entity maintains a prescribed minimum level of unencumbered high-quality liquid assets equal to expected net cash outflows as defined. The other test, referred to as the net stable funding ratio, is designed to promote greater reliance on medium and long term funding sources.


5



On September 3, 2014, U.S. federal banking agencies published the final rule covering Liquidity Risk Management Standards that would standardize minimum liquidity requirements for internationally active banking organizations as defined (generally those with total consolidated assets in excess of $250 billion) as well as modified liquidity requirements for other banking organizations with total consolidated assets in excess of $50 billion that are not internationally active. Although the final rule does not apply to banking organizations with total assets less than $50 billion, including the Company, if growth in the balance sheet of the Company were to approach the $50 billion threshold, the costs of such liquidity regulations would begin to be realized.

Stress Testing

As required by the Dodd-Frank Act, the Federal Reserve published regulations that require bank holding companies with $10 billion to $50 billion in assets to perform annual capital stress tests. The requirements for annual capital stress test became effective for the Company in the fourth quarter of 2013. The Dodd-Frank Act Stress Test ("DFAST") is a forward-looking exercise under which the Company and its banking subsidiary estimate the impact of a hypothetical severely adverse macroeconomic scenario provided by the Federal Reserve and the Office of the Comptroller of the Currency on its financial condition and regulatory capital ratios over a nine-quarter time horizon. Under the scenario provided by the regulatory agencies for the Company's most recently completed stress test, all capital ratio measures remain comfortably above the minimum regulatory thresholds. Additional information concerning the annual stress test may be found on the Company's Investor Relations page at www.bokf.com under the "Presentations" tab. The results of future capital stress tests may place constraints on capital distributions or increases in required regulatory capital under certain circumstances.

Further discussion of regulatory capital, including regulatory capital amounts and ratios, is set forth under the heading “Liquidity and Capital” within “Management's Discussion and Analysis of Financial Condition and Results of Operations” and in Note 15 of the Company's Notes to Consolidated Financial Statements, both of which appear elsewhere herein.

Executive and Incentive Compensation

Guidelines adopted by federal banking agencies prohibit excessive compensation as an unsafe and unsound practice and describe compensation as excessive when the amounts paid are unreasonable or disproportionate to the services performed by an executive officer, employee, director or principal shareholder. The Federal Reserve Board has issued comprehensive guidance on incentive compensation intended to ensure that the incentive compensation policies do not undermine safety and soundness by encouraging excessive risk taking. This guidance covers all employees that have the ability to materially affect the risk profile of an organization, either individually or as part of a group, based on key principles that (i) incentives do not encourage risk-taking beyond the organization's ability to identify and manage risk, (ii) compensation arrangements are compatible with effective internal controls and risk management, and (iii) compensation arrangements are supported by strong corporate governance, including active and effective board oversight. Deficiencies in compensation practices may affect supervisory ratings and enforcement actions may be taken if incentive compensation arrangements pose a risk to safety and soundness.

Deposit Insurance

Substantially all of the deposits held by the Bank are insured up to applicable limits by the Deposit Insurance Fund (“DIF”) of the FDIC and are subject to deposit insurance assessments to maintain the DIF. In 2011, the FDIC released a final rule to implement provisions of the Dodd-Frank Act that affect deposit insurance assessments. Among other things, the Dodd-Frank Act raised the minimum designated reserve ratio from 1.15% to 1.35% of estimated insured deposits, removed the upper limit of the designated reserve ratio, required that the designated reserve ratio reach 1.35% by September 30, 2020, and required that the FDIC offset the effect of increasing the minimum designated reserve ratio on depository institutions with total assets of less than $10 billion. The Dodd-Frank Act provided the FDIC flexibility in implementation of the increase in the designated reserve ratio, but it will ultimately result in increased deposit insurance costs to the Company. The Dodd-Frank Act also required that the FDIC redefine the assessment base to average consolidated assets minus average tangible equity.

Dividends

A key source of liquidity for BOK Financial is dividends from the Bank, which is limited by various banking regulations to net profits, as defined, for the year plus retained profits for the preceding two years. Dividends are further restricted by minimum capital requirements and the Company's internal capital policy. The Bank's dividend limitations are discussed under the heading “Liquidity and Capital” within “Management's Discussion and Analysis of Financial Condition and Results of Operations”.


6



Source of Strength Doctrine

According to Federal Reserve Board policy, a bank holding company is expected to act as a source of financial strength to each subsidiary bank and to commit resources to support each such subsidiary. This support may be required at times when a bank holding company may not be able to provide such support.

Transactions with Affiliates

The Federal Reserve Board regulates transactions between the Company and its subsidiaries. Generally, the Federal Reserve Act and Regulation W, as amended by the Dodd-Frank Act, limit the Company’s banking subsidiary and its subsidiaries, to lending and other “covered transactions” with affiliates. The aggregate amount of covered transactions a banking subsidiary or its subsidiaries may enter into with an affiliate may not exceed 10% of the capital stock and surplus of the banking subsidiary. The aggregate amount of covered transactions with all affiliates may not exceed 20% of the capital stock and surplus of the banking subsidiary.

Covered transactions with affiliates are also subject to collateralization requirements and must be conducted on arm’s length terms. Covered transactions include (a) a loan or extension of credit by the banking subsidiary, including derivative contracts, (b) a purchase of securities issued to a banking subsidiary, (c) a purchase of assets by the banking subsidiary unless otherwise exempted by the Federal Reserve, (d) acceptance of securities issued by an affiliate to the banking subsidiary as collateral for a loan, and (e) the issuance of a guarantee, acceptance or letter of credit by the banking subsidiary on behalf of an affiliate.

Bank Secrecy Act and USA PATRIOT Act

The Bank Secrecy Act (“BSA”) and the The USA PATRIOT Act of 2001 (“PATRIOT Act”) imposes many requirements on financial institutions in the interest of national security and law enforcement. BSA requires banks to maintain records and file suspicious activity reports that are of use to law enforcement and regulators in combating money laundering and other financial crimes. The PATRIOT Act is intended to deny terrorists and criminals the ability to access the U.S. financial services system and places significantly greater requirements on financial institutions. Financial institutions, such as the Company and its subsidiaries, must have a designated BSA Officer, internal controls, independent testing and training programs commensurate with their size and risk profile. As part of its internal control program, a financial institution is expected to have effective customer due diligence and enhanced due diligence requirements for high-risk customers, as well as processes to prohibit transaction with entities subject to Office of Foreign Asset Control sanctions. Documentation and recordkeeping requirements, as well as system requirements, aimed at identifying and reporting suspicious activity reporting, must increase with the institution's size and complexity. Failure to implement or maintain adequate programs and controls to combat terrorist financing and money laundering may have serious legal, financial, and reputational consequences.



7



Governmental Policies and Economic Factors

The operations of BOK Financial and its subsidiaries are affected by legislative changes and by the policies of various regulatory authorities and, in particular, the policies of the Federal Reserve Board. The Federal Reserve Board has statutory objectives to maximize employment and maintain price stability. Among the instruments of monetary policy used by the Federal Reserve Board to implement these objectives are: open-market operations in U.S. Government securities, changes in the discount rate and federal funds rate on bank borrowings, and changes in reserve requirements on bank deposits. The effect of future changes in such policies on the business and earnings of BOK Financial and its subsidiaries is uncertain.

In response to the significant recession in business activity which began in 2007, the Federal Reserve took aggressive actions to reduce interest rates and provide liquidity. While many of the crisis-related programs have expired or been closed, government legislation and policies continue to be accommodative, including increases in government spending, reduction of certain taxes and promotion of home affordability programs.

The Federal Reserve completed its bond purchase program designed to reduce longer-term rates in October of 2014, although it continues to maintain an accommodative policy of reinvesting principal payments from its holdings of agency debt and agency mortgage-backed securities in agency mortgage-backed securities and to rollover maturing Treasury securities. The Federal Reserve has indicated that it will likely foster a low-interest rate environment for a considerable time, dependent on inflation and employment levels the progress. The short-term effectiveness and long-term impact of these programs on the economy in general and on BOK Financial Corporation in particular are uncertain.

Foreign Operations

BOK Financial does not engage in operations in foreign countries, nor does it lend to foreign governments.

8



ITEM 1A.   RISK FACTORS

BOK Financial Corporation and its subsidiaries could be adversely affected by risks and uncertainties that could have a material impact on its financial condition and results of operations, as well as on its common stock and other financial instruments. Risk factors which are significant to the Company include, but are not limited to:

General and Regulatory Risk Factors

Adverse factors could impact BOK Financial's ability to implement its operating strategy.

Although BOK Financial has developed an operating strategy which it expects to result in continuing improved financial performance, BOK Financial cannot assure that it will be successful in fulfilling this strategy or that this operating strategy will be successful. Achieving success is dependent upon a number of factors, many of which are beyond BOK Financial's direct control. Factors that may adversely affect BOK Financial's ability to implement its operating strategy include:

deterioration of BOK Financial's asset quality;
deterioration in general economic conditions, especially in BOK Financial's core markets;
inability to control BOK Financial's non-interest expenses;
inability to increase non-interest income;
inability to access capital;
decreases in net interest margins;
increases in competition;
adverse regulatory developments.

Substantial competition could adversely affect BOK Financial.

Banking is a competitive business. BOK Financial competes actively for loan, deposit and other financial services business in the southwest region of the United States. BOK Financial's competitors include a large number of small and large local and national banks, savings and loan associations, credit unions, trust companies, broker-dealers and underwriters, as well as many financial and non-financial firms that offer services similar to those of BOK Financial. Large national financial institutions have substantial capital, technology and marketing resources. Such large financial institutions may have greater access to capital at a lower cost than BOK Financial does, which may adversely affect BOK Financial's ability to compete effectively.

BOK Financial has expanded into markets outside of Oklahoma, where it competes with a large number of financial institutions that have an established customer base and greater market share than BOK Financial. BOK Financial may not be able to continue to compete successfully in these markets outside of Oklahoma. With respect to some of its services, BOK Financial competes with non-bank companies that are not subject to regulation. The absence of regulatory requirements may give non-banks a competitive advantage.

Government regulations could adversely affect BOK Financial.

BOKF and BOKF, NA are subject to banking laws and regulations that limit the type of acquisitions and investments that we may make. In addition, certain permitted acquisitions and investments are subject to prior review and approval by banking regulators, including the Federal Reserve, OCC and FDIC. Banking regulators have broad discretion on whether to approve proposed acquisitions and investments. In deciding whether to approve a proposed acquisition, federal banking regulators will consider, among other things, the effect of the acquisition on competition; the convenience and needs of the communities to be served, including our record of compliance under the Community Reinvestment Act; and our effectiveness in combating money laundering. They will also consider our financial condition and our future prospects, including projected capital ratios and levels; the competence, experience, and integrity of our management; and our record of compliance with laws and regulations.
The trend of increasingly extensive regulation is likely to continue and become more costly in the future. Laws, regulations or policies currently affecting BOK Financial and its subsidiaries may change. The implementation of the Dodd-Frank Act has and will continue to affect BOK Financial’s businesses, including interchange revenue, mortgage banking, derivative and trading activities on behalf of customers, consumer products and funds management.


9



Regulatory authorities may change their interpretation of these statutes and regulations and are likely to increase their supervisory activities, including the OCC, our primary regulator, and the CFPB, our new regulator for certain designated consumer laws and regulations. Violations of laws and regulations could limit the growth potential of BOK Financial's businesses. We have made extensive investments in human and technological resources to address enhanced regulatory expectations, including investments in the areas of risk management, compliance, and capital planning.

Adverse political environment could negatively impact BOK Financial’s business.

As a result of the financial crisis and related government intervention to stabilize the banking system, there have been a series of laws and related regulations proposed or enacted in an attempt to ensure the crisis is not repeated. Many of the proposed new regulations are far-reaching. The intervention by the government also impacted populist sentiment with a negative view of financial institutions. This sentiment may increase litigation risk to the Company. While the Company did not participate in the Troubled Asset Relief Program and performed well throughout the downturn, the adverse political environment could have an adverse impact on BOK Financial’s future operations.


Credit Risk Factors

Adverse regional economic developments could negatively affect BOK Financial's business.

At December 31, 2015 , loans to businesses and individuals with collateral primarily located in Texas represented approximately 33% of the total loan portfolio and loans to businesses and individuals with collateral primarily located in Oklahoma represented approximately 24% of our total loan portfolio. These geographic concentrations subject the loan portfolio to the general economic conditions within these areas. Poor economic conditions in Oklahoma, Texas or other markets in the southwest region may cause BOK Financial to incur losses associated with higher default rates and decreased collateral values in BOK Financial's loan portfolio. A regional economic downturn could also adversely affect revenue from brokerage and trading activities, mortgage loan originations and other sources of fee-based revenue.

Extended oil and gas commodity price downturns could negatively effect BOK Financial customers

At December 31, 2015 , 19% of BOK Financial's total loan portfolio is comprised of loans to borrowers in the energy industry. The energy industry is historically cyclical and prolonged periods of low oil and gas commodity prices could negatively impact borrowers' ability to pay. In addition, the Company does business in several major oil and natural gas producing states including Oklahoma, Texas and Colorado. The economies of these states could be negatively impacted by prolonged periods of low oil and gas commodity prices resulting in increased credit migration to classified and nonaccruing categories, higher loan loss provisions and risk of credit losses from both energy borrowers and businesses and individuals in those regional economies.

Other adverse economic factors affecting particular industries could have a negative effect on BOK Financial customers and their ability to make payments to BOK Financial.

Certain industry-specific economic factors also affect BOK Financial. For example, BOK Financial's loan portfolio includes commercial real estate loans. A downturn in the real estate industry in general or in certain segments of the commercial real estate industry in the southwest region could also have an adverse effect on BOK Financial's operations.

Adverse global economic factors could have a negative effect on BOK Financial customers and counter-parties.

Economic conditions globally, including those of the European Union and China, could impact BOK Financial’s customers and counter-parties with which we do business. We have no direct exposure to European sovereign debt and our aggregate gross exposure to European financial institutions totaled $8.8 million at December 31, 2015 . Our exposure to Chinese financial institution is limited. In addition, we have an aggregate gross exposure to internationally active domestic financial institutions of approximately $200 million at December 31, 2015 composed of $182 million of cash and securities positions and $19 million of gross derivative positions. The financial condition of these institutions is monitored on an on-going basis. We have not identified any significant customer exposures to European sovereign debt, European financial institutions or Chinese financial institutions.



10



Liquidity and Interest Rate Risk Factors

Fluctuations in interest rates could adversely affect BOK Financial's business.

BOK Financial's business is highly sensitive to:

the monetary policies implemented by the Federal Reserve Board, including the discount rate on bank borrowings and changes in reserve requirements, which affect BOK Financial's ability to make loans and the interest rates we may charge;
changes in prevailing interest rates, due to the dependency of the Bank on interest income;
open market operations in U.S. Government securities.

A significant increase in market interest rates, or the perception that an increase may occur, could adversely affect both BOK Financial's ability to originate new loans and BOK Financial's ability to grow. Conversely, a decrease in interest rates could result in acceleration in the payment of loans, including loans underlying BOK Financial's holdings of residential mortgage-backed securities and termination of BOK Financial's mortgage servicing rights. In addition, changes in market interest rates, changes in the relationships between short-term and long-term market interest rates or changes in the relationships between different interest rate indices, could affect the interest rates charged on interest-earning assets differently than the interest rates paid on interest-bearing liabilities. This difference could result in an increase in interest expense relative to interest income which would reduce the Company’s net interest revenue. In a low interest rate environment, the Company's ability to support net interest revenue through continued securities portfolio growth or further reduce deposit costs could be limited. An increase in market interest rates also could adversely affect the ability of BOK Financial's floating-rate borrowers to meet their higher payment obligations. If this occurred, it could cause an increase in nonperforming assets and net charge-offs, which could adversely affect BOK Financial's business.

Changes in mortgage interest rates could adversely affect mortgage banking operations as well as BOK Financial's substantial holdings of residential mortgage-backed securities and mortgage servicing rights.

Our available for sale residential mortgage-backed security portfolio represents investment interests in pools of residential mortgages, composing $6.0 billion or 19% of total assets of the Company at December 31, 2015 . Residential mortgage-backed securities are highly sensitive to changes in interest rates. BOK Financial mitigates this risk somewhat by investing principally in shorter duration mortgage products, which are less sensitive to changes in interest rates. A significant decrease in interest rates has led mortgage holders to refinance the mortgages constituting the pool backing the securities, subjecting BOK Financial to a risk of prepayment and decreased return on investment due to subsequent reinvestment at lower interest rates. A significant decrease in interest rates has also accelerated premium amortization. Conversely, a significant increase in interest rates could cause mortgage holders to extend the term over which they repay their loans, which delays the Company’s opportunity to reinvest funds at higher rates.

Residential mortgage-backed securities are also subject to credit risk from delinquency or default of the underlying loans. BOK Financial mitigates this risk somewhat by investing in securities issued by U.S. government agencies. Principal and interest payments on the loans underlying these securities are guaranteed by these agencies.

The Federal Reserve Board and other government agencies have implemented policies and programs to stimulate the U.S. economy and housing market. These policies and programs have significantly reduced both primary mortgage interest rates, the rates paid by borrowers, and secondary mortgage interest rates, the rates required by investors in mortgage backed securities. They have also reduced barriers to mortgage refinancing such as insufficient home values.

BOK Financial derives a substantial amount of revenue from mortgage banking activities, including $78 million from the production and sale of mortgage loans, $56 million from the servicing of mortgage loans and $34 million from sales of financial instruments to other mortgage lenders in 2015 . These activities, as well our substantial holdings of residential mortgage backed securities and mortgage servicing rights may be adversely affected by changes in government policies and programs.


11



In addition, as part of BOK Financial's mortgage banking business, BOK Financial has substantial holdings of mortgage servicing rights, totaling $219 million or 0.69% of total assets at December 31, 2015 . The value of these rights is also very sensitive to changes in interest rates. Falling interest rates tend to increase loan prepayments, which may lead to cancellation of the related servicing rights. BOK Financial attempts to manage this risk by maintaining an active hedging program for its mortgage servicing rights. The Company's hedging program focuses on partially hedging the risk of changes in fair value, primarily related to changes mortgage interest rates. Other factors, such as short-term interest rates, also impact the value of mortgage servicing rights, may not be hedged. The value of mortgage servicing rights may also decrease due to rising delinquency or default of the loans serviced which are not hedged. This risk is mitigated somewhat by adherence to underwriting standards on loans originated for sale.

Market disruptions could impact BOK Financial’s funding sources.

BOK Financial’s subsidiary bank may rely on other financial institutions and the Federal Home Loan Bank of Topeka as a significant source of funds. Our ability to fund loans, manage our interest rate risk and meet other obligations depends on funds borrowed from these sources. The inability to borrow funds at market interest rates could have a material adverse effect on our operations.


Operating Risk Factors

Dependence on technology increases cybersecurity risk.

As a financial institution, we process a significant number of customer transactions and possess a significant amount of sensitive customer information. As technology advances, the ability to initiate transactions and access data has become more widely distributed among mobile phones, personal computers, automated teller machines, remote deposit capture sites and similar access points. These technological advances increase cybersecurity risk. While the Company maintains programs intended to prevent or limit the effects of cybersecurity risk, there is no assurance that unauthorized transactions or unauthorized access to customer information will not occur. The financial, reputational and regulatory impact of unauthorized transactions or unauthorized access to customer information could be significant.

We depend on third parties for critical components of our infrastructure.

We outsource a significant portion of our information systems, communications, data management and transaction processing to third parties. These third parties are sources of risk associated with operational errors, system interruptions or breaches, unauthorized disclosure of confidential information and misuse of intellectual property. If the service providers encounter any of these issues, we could be exposed to disruption of service, reputation damages, and litigation risk that could be material to our business.


Risks Related to an Investment in Our Stock

Although publicly traded, BOK Financial's common stock has substantially less liquidity than the average trading market for a stock quoted on the NASDAQ National Market System.

A relatively small fraction of BOK Financial's outstanding common stock is actively traded. The risks of low liquidity include increased volatility of the price of BOK Financial's common stock. Low liquidity may also limit holders of BOK Financial's common stock in their ability to sell or transfer BOK Financial's shares at the price, time and quantity desired.

BOK Financial's principal shareholder controls a majority of BOK Financial's common stock.

Mr. George B. Kaiser owns approximately 61% of the outstanding shares of BOK Financial's common stock at December 31, 2015 . Mr. Kaiser is able to elect all of BOK Financial's directors and effectively control the vote on all matters submitted to a vote of BOK Financial's common shareholders. Mr. Kaiser's ability to prevent an unsolicited bid for BOK Financial or any other change in control could have an adverse effect on the market price for BOK Financial's common stock. A substantial majority of BOK Financial's directors are not officers or employees of BOK Financial or any of its affiliates. However, because of Mr. Kaiser's control over the election of BOK Financial's directors, he could change the composition of BOK Financial's Board of Directors so that it would not have a majority of outside directors.


12



Possible future sales of shares by BOK Financial's principal shareholder could adversely affect the market price of BOK Financial's common stock.

Mr. Kaiser has the right to sell shares of BOK Financial's common stock in compliance with the federal securities laws at any time, or from time to time. The federal securities laws will be the only restrictions on Mr. Kaiser's ability to sell. Because of his current control of BOK Financial, Mr. Kaiser could sell large amounts of his shares of BOK Financial's common stock by causing BOK Financial to file a registration statement that would allow him to sell shares more easily. In addition, Mr. Kaiser could sell his shares of BOK Financial's common stock without registration under Rule 144 of the Securities Act. Although BOK Financial can make no predictions as to the effect, if any, that such sales would have on the market price of BOK Financial's common stock, sales of substantial amounts of BOK Financial's common stock, or the perception that such sales could occur, could adversely affect market prices. If Mr. Kaiser sells or transfers his shares of BOK Financial's common stock as a block, another person or entity could become BOK Financial's controlling shareholder.

Statutory restrictions on subsidiary dividends and other distributions and debts of BOK Financial's subsidiaries could limit amounts BOK Financial's subsidiaries may pay to BOK Financial.

A substantial portion of BOK Financial's cash flow typically comes from dividends paid by the Bank. Statutory provisions and regulations restrict the amount of dividends the Bank may pay to BOK Financial without regulatory approval. Management also developed, and the BOK Financial board of directors approved, an internal capital policy that is more restrictive than the regulatory capital standards. In the event of liquidation, creditors of the Bank and other non-bank subsidiaries of BOK Financial are entitled to receive distributions from the assets of that subsidiary before BOK Financial, as holder of an equity interest in the subsidiaries, is entitled to receive any distributions.
ITEM 1B.   UNRESOLVED STAFF COMMENTS
None.
ITEM 2.   PROPERTIES

BOK Financial and its subsidiaries own and lease improved real estate that is carried at $178 million, net of depreciation and amortization. The Company’s principal offices are located in leased premises in the Bank of Oklahoma Tower in Tulsa, Oklahoma. Banking offices are primarily located in Tulsa and Oklahoma City, Oklahoma; Dallas, Fort Worth and Houston, Texas; Albuquerque, New Mexico; Denver, Colorado; Phoenix, Arizona; and Kansas City, Kansas/Missouri. Primary operations facilities are located in Tulsa and Oklahoma City, Oklahoma; Dallas, Texas and Albuquerque, New Mexico. The Company’s facilities are suitable for their respective uses and present needs.

The information set forth in Notes 5 and 14 of the Company’s Notes to Consolidated Financial Statements, which appear elsewhere herein, provides further discussion related to properties.
ITEM 3.   LEGAL PROCEEDINGS

The information set forth in Note 14 of the Company’s Notes to Consolidated Financial Statements, which appear elsewhere herein, provides discussion related to legal proceedings.
ITEM 4.   MINE SAFETY DISCLOSURES
Not applicable.

13



PART II

ITEM 5.   MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

BOK Financial’s $0.00006 par value common stock is traded on the NASDAQ Stock Market under the symbol BOKF. As of January 31, 2016, common shareholders of record numbered 798 with 66,119,435 shares outstanding.

The highest and lowest quarterly closing bid price for shares and cash dividends declared per share of BOK Financial common stock follows:
First
Second
Third
Fourth
2015:
Low
$
53.37

$
60.18

$
57.09

$
58.92

High
61.67

70.72

70.15

72.44

Cash dividends declared
0.42

0.42

0.42

0.43

2014:




Low
$
62.34

$
62.18

$
63.47

$
57.87

High
69.69

70.18

68.71

62.28

Cash dividends declared
0.40

0.40

0.40

0.42




































14



Shareholder Return Performance Graph

Set forth below is a line graph comparing the change in cumulative shareholder return of the NASDAQ Index, the NASDAQ Bank Index, and the KBW 50 Bank Index for the period commencing December 31, 2010 and ending December 31, 2015 .*
Period Ending December 31,
Index
2010
2011
2012
2013
2014
2015
BOK Financial Corporation
100.00

105.19

109.01

136.04

126.24

129.04

NASDAQ Composite
100.00

99.21

116.82

163.75

188.03

201.40

NASDAQ Bank Index
100.00

89.50

106.23

150.55

157.95

171.92

KBW 50
100.00

76.82

102.19

140.78

153.96

154.73

*
Graph assumes value of an investment in the Company's Common Stock for each index was $100 on December 31, 2010 . The KBW 50 Bank index is the Keefe, Bruyette & Woods, Inc. index, which is available only for calendar quarter end periods. Cash dividends on Common Stock are assumed to have been reinvested in BOK Financial Common Stock.


15



The following table provides information with respect to purchases made by or on behalf of the Company or any “affiliated purchaser” (as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934), of the Company’s common stock during the three months ended December 31, 2015 .
Period
Total Number of Shares Purchased 2
Average Price Paid per Share
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs 1
Maximum Number of Shares that May Yet Be Purchased Under the Plans
October 1, 2015 to October 31, 2015
47,720

$
67.36

40,000

4,960,000

November 1, 2015 to November 30, 2015
424,340

$
68.90

423,000

4,537,000

December 1, 2015 to December 31, 2015
1,416,069

$
62.88

1,411,074

3,125,926

Total
1,888,129

1,874,074

1
On October 1, 2015, the Company's board of directors authorized the Company to repurchase up to five million shares of the Company's common stock. As of December 31, 2015 , the Company had repurchased 1,874,074 shares under this plan. Future repurchases of the Company's common stock will vary based on market conditions, regulatory limitations and other factors.
2
The Company routinely repurchases shares from employees to cover the exercise price and taxes in connection with employee shared-based compensation.

16



ITEM 6.  SELECTED FINANCIAL DATA

The selected financial data is set forth within Table 1 of Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Table 1 -- Consolidated Selected Financial Data
(Dollars in thousands, except per share data)
December 31,
2015
2014
2013
2012
2011
Selected Financial Data
For the year:
Interest revenue
$
766,828

$
732,239

$
745,371

$
794,871

$
813,146

Interest expense
63,474

67,045

70,894

87,322

120,101

Net interest revenue
703,354

665,194

674,477

707,549

693,045

Provision for for credit losses
34,000


(27,900
)
(22,000
)
(6,050
)
Fees and commissions revenue
659,019

621,319

603,844

628,880

527,093

Net income attributable to BOK Financial Corporation shareholders
288,565

292,435

316,609

351,191

285,875

Period-end:




Loans
15,941,154

14,208,037

12,792,264

12,311,456

11,269,743

Assets
31,476,128

29,089,698

27,015,432

28,148,631

25,493,946

Deposits
21,088,158

21,140,859

20,269,327

21,179,060

18,762,580

Subordinated debentures
226,350

347,983

347,802

347,633

398,881

Shareholders’ equity
3,230,556

3,302,179

3,020,049

2,957,860

2,750,468

Nonperforming assets 1
251,908

256,617

247,743

276,716

356,932

Profitability Statistics




Earnings per share (based on average equivalent shares):




Basic
$
4.22

$
4.23

$
4.61

$
5.15

$
4.18

Diluted
4.21

4.22

4.59

5.13

4.17

Percentages (based on daily averages):




Return on average assets
0.94
%
1.04
%
1.16
%
1.34
%
1.17
%
Return on average total equity
8.66

9.20

10.59

12.19

10.81

Average total equity to average assets
11.03

11.47

11.00

11.05

10.95

Common Stock Performance




Per Share:




Book value per common share
$
49.03

$
47.78

$
43.88

$
43.29

$
40.36

Market price: December 31 close
59.79

60.04

66.32

54.46

54.93

Market range – High close bid price
72.44

70.18

69.36

59.77

56.30

Market range – Low close bid price
53.37

57.87

55.05

52.56

44.00

Cash dividends declared
1.69

1.62

1.54

2.47

4
1.13

Dividend payout ratio
40.03
%
38.35
%
33.43
%
48.01
%
4
27.01
%

17



Table 1 -- Consolidated Selected Financial Data
(Dollars in thousands, except per share data)
December 31,
2015
2014
2013
2012
2011
Selected Balance Sheet Statistics




Period-end:




Common equity Tier 1 ratio 2
12.13
%
N/A

N/A

N/A

N/A

Tier 1 capital ratio 2
12.13
%
13.33
%
13.77
%
12.78
%
13.27
%
Total capital ratio 2
13.30

14.66

15.56

15.13

16.49

Leverage ratio 2
9.25

9.96

10.05

9.01

9.15

Allowance for loan losses to nonaccruing loans 5
180.09

245.34

184.71

160.92

125.93

Allowance for loan losses to loans
1.41

1.33

1.45

1.75

2.25

Combined allowances for credit losses to loans 3
1.43

1.34

1.47

1.77

2.33

Miscellaneous (at December 31)




Number of employees (full-time equivalent)
4,789

4,743

4,632

4,704

4,511

Number of banking locations
152

182

206

217

212

Number of TransFund locations
1,972

2,080

1,998

1,970

1,912

Fiduciary assets
$
38,333,638

$
35,997,877

$
30,137,092

$
25,829,038

$
22,821,813

Mortgage loans serviced for others
19,678,226

16,162,887

13,718,942

11,981,624

11,300,986

1
Includes nonaccruing loans, renegotiated loans and assets acquired in satisfaction of loans. Excludes loans past due 90 days or more and still accruing.
2
Risk-based capital ratios for 2015 calculated under revised regulatory capital rules issued July 2013 and effective for the Company on January 1, 2015. Previous risk-based ratios presented are calculated in accordance with then current regulatory capital rules.
3
Includes allowance for loan losses and accrual for off-balance sheet credit risk.
4
Includes $1.00 per share special dividend.
5
Excludes residential mortgage loans guaranteed by agencies of the U.S. government.


Management’s Assessment of Operations and Financial Condition

Overview

The following discussion is management’s analysis to assist in the understanding and evaluation of the financial condition and results of operations of BOK Financial Corporation (“BOK Financial” or “the Company”). This discussion should be read in conjunction with the consolidated financial statements and footnotes and selected financial data presented elsewhere in this report.

Economic activity expanded at a solid pace and unemployment continued to improve during 2015. National unemployment rates were 5.0% in December of 2015 compared to 5.6% in December of 2014. Inflationary pressure have remained subdued and the U.S. government has continued to provide accommodative economic policy to support growth in the economy and further reduction in the unemployment rate. According to the minutes of the Federal Open Market Committee ("FOMC") of the Federal Reserve for December, household spending and business investment has expanded at a moderate rate toward the end of 2015 and the housing sector has improved, but net exports have been soft and inventory investment has slowed. Investment returns for 2015 were flat for large cap U.S. equities, bonds, and developed international markets. Total return was negative for small cap U.S. stocks and down double digits for emerging market equities. And although the S&P 500 was flat, there was considerable volatility during the year.

The FOMC voted to raise the target range for the federal funds rate by ¼ percentage point, bringing it to ¼ to ½ percent, ending an extraordinary seven-year period during which the federal funds rate was held near zero to support the recovery of the economy from the worst financial crisis and recession since the Great Depression. The long end of the yield curve remains under pressure due to weakness in Europe and Japan and the curve will likely continue to flatten in 2016. The continued low interest rate environment has continued to present challenges for all financial institutions as cash flows from loan and securities portfolios are reinvested at current rates and competition for high-quality borrowers has been significant.
Increases in the global supply of oil and other factors caused energy prices to continue to decline in 2015. West Texas Intermediate crude oil fell from a high just below $108/bbl in June 2014 to a low of $27/bbl in January 2016. The longer the

18



prices remain in a sustained downturn, energy borrowers and the local economies in our geographical footprint will be more significantly impacted.
Performance Summary

Net income for the year ended December 31, 2015 totaled $288.6 million or $4.21 per diluted share compared with net income of $292.4 million or $4.22 per diluted share for the year ended December 31, 2014 .

Highlights of 2015 included:
Net interest revenue totaled $703.4 million for 2015 , up from $665.2 million for 2014 . Growth in average earning assets primarily related to growth in average loans was partially offset by the impact of lower average rates. Net interest margin was 2.60% for 2015 compared to 2.68% for 2014 .
Fees and commissions revenue increase d $37.7 million or 6% over 2014 to $659.0 million for 2015 . Mortgage banking revenue increase d $25.3 million primarily due to a record level of mortgage loan originations during the year. Fiduciary and asset management revenue grew by $10.5 million due to acquisitions and organic growth.
Operating expenses totaled $904.6 million , an increase of $57.0 million or 7% over the prior year. Personnel costs increase d $46.6 million . Deferred compensation expense for 2014 included a $12.6 million net reduction in the accrual for amounts payable to certain executive officers of the Company under the 2011 True-Up Plan. In addition, cash-based incentive compensation and regular salaries also increased over the prior year. Non-personnel expenses increase d $10.5 million or 3% over the prior year due to increased mortgage banking and data processing and communications expense.
After evaluating all credit factors, the Company determined that a $34.0 million provision for credit losses was necessary in 2015 , primarily due to credit migration in the energy portfolio and overall loan portfolio growth. No provision for credit losses was necessary in 2014 . The Company had a net recovery of $2.9 million or (0.02)% of average loans for 2015 compared to a net recovery of $2.8 million or (0.02)% of average loans for 2014 . Gross charge-offs decreased to $15.2 million in 2015 from $16.2 million in 2014 .
The combined allowance for credit losses totaled $227 million or 1.43% of outstanding loans at December 31, 2015 compared to $190 million or 1.34% of outstanding loans at December 31, 2014 .
Nonperforming assets not guaranteed by U.S. government agencies totaled $156 million or 0.99% of outstanding loans and repossessed assets (excluding those guaranteed by U.S. government agencies) at December 31, 2015 and $129 million or 0.92% of outstanding loans and repossessed assets (excluding those guaranteed by U.S. government agencies) at December 31, 2014 . Excluding assets guaranteed by U.S. government agencies, nonaccruing loans increase d $48 million and repossessed assets decrease d $21 million during 2015 .
Period-end outstanding loan balances were $15.9 billion at December 31, 2015 , an increase of $1.7 billion over the prior year. Commercial loan balances grew by $1.2 billion or 13% and commercial real estate loans increase d $531 million or 19% . Residential mortgage loans decrease d $73 million . Personal loans increase d $118 million .
Period-end deposits totaled $21.1 billion at December 31, 2015 , largely unchanged compared to December 31, 2014 . Demand deposit accounts increase d by $231 million , offset by a $115 million decrease in interest-bearing transaction deposits and a $203 million decrease in time deposit balances.
New regulatory capital rules were effective for BOK Financial on January 1, 2015 and established a 7% threshold for the common equity Tier 1 ratio. The Company's common equity Tier 1 capital ratio was 12.13% at December 31, 2015 . In addition, the Company's Tier 1 capital ratio was 12.13% , total capital ratio was 13.30% and leverage ratio was 9.25% at December 31, 2015 . At December 31, 2014 , the Company's Tier 1 capital ratio was 13.33% at December 31, 2014 , the total capital ratio was 14.66% and the leverage ratio was 9.96% . The decrease in capital ratios was primarily due to share repurchases. The Company repurchased 3,634,578 shares at an average price of $63.15 per share.
The Company paid cash dividends of $1.69 per common share during 2015 and $1.62 per common share in 2014 .

19



Net income for the fourth quarter of 2015 totaled $59.6 million or $0.89 per diluted share compared to $64.3 million or $0.93 per diluted share for the fourth quarter of 2014 .

Highlights of the fourth quarter of 2015 included:
Net interest revenue totaled $181.3 million for the fourth quarter of 2015 , up $11.6 million over the fourth quarter of 2014 . Net interest margin was 2.64% for the fourth quarter of 2015 compared to 2.61% for the fourth quarter of 2014 . Net interest revenue increased primarily due to the growth in average loan balances, partially offset by a decrease in available for sale securities and interest-bearing cash and cash equivalent balances. An increase in the yield on the available for sale securities portfolio and lower funding costs was partially offset by a decrease in loan yields.
Fees and commissions revenue was $155.8 million for the fourth quarter of 2015 compared to $157.9 million for the fourth quarter of 2014 . Mortgage banking revenue was $5.1 million lower than in the fourth quarter of 2014 , partially offset by growth in all other fee categories.
Operating expenses totaled $232.6 million , an increase of $6.7 million over the prior year, primarily due to increased personnel expense compared to the fourth quarter of 2014 . Incentive compensation expense, employee healthcare costs and regular salaries expense all increased over the prior year. The fourth quarter of 2014 included $4.9 million of branch closure costs and a $1.8 million contribution of developed commercial real estate to the BOKF Foundation.
A $22.5 million provision for credit losses was recorded in the fourth quarter of 2015 due to credit migration and increased impairment in the energy loan portfolio. No provision for credit losses was recorded in the fourth quarter of 2014 . Net charge-offs totaled $3.0 million in the fourth quarter of 2015 compared to $2.2 million in the fourth quarter of 2014 . Gross charge-offs were $4.9 million compared to $7.2 million in the prior year.
Critical Accounting Policies & Estimates

The Consolidated Financial Statements and accompanying notes are prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). The Company's accounting policies are more fully described in Note 1 of the Consolidated Financial Statements. Management makes significant assumptions and estimates in the preparation of the Consolidated Financial Statements and accompanying notes in conformity with GAAP that may be highly subjective, complex and subject to variability. Actual results could differ significantly from these assumptions and estimates. The following discussion addresses the most critical areas where these assumptions and estimates could affect the financial condition, results of operations and cash flows of the Company. These critical accounting policies and estimates have been discussed with the appropriate committees of the Board of Directors.

Allowance for Loan Losses and Accrual for Off-Balance Sheet Credit Risk

The appropriateness of the allowance for loan losses and accrual for off-balance sheet credit risk is assessed quarterly by management based on an ongoing evaluation of the probable estimated losses inherent in the loan portfolio and probable estimated losses on unused commitments to provide financing. A consistent, well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company. The allowance for loan losses consists of specific allowances attributed to certain impaired loans that have not yet been charged down to amounts we expect to recover, general allowances for unimpaired loans that are based on estimated loss rates by loan class and nonspecific allowances for risks beyond factors specific to a particular portfolio segment or loan class. There have been no material changes in the approach or techniques utilized in developing the allowance for loan losses and accrual for off-balance sheet credit risk during 2015.

Loans are considered impaired when it is probable that we will not collect all amounts due according to the contractual terms of the loan agreements, including loans modified in a troubled debt restructuring. Internally risk graded loans are evaluated individually for impairment. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded through a quarterly evaluation of the borrower's ability to repay. Certain commercial loans and most residential mortgage and consumer loans which represent small balance, homogeneous pools are not risk graded. Non-risk graded loans are identified as impaired based on performance status. Generally, non-risk graded loans are considered impaired when 90 or more days past due, in bankruptcy or modified in a troubled debt restructuring.


20



Specific allowances for impaired loans that have not yet been charged down to amounts we expect to recover are measured by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. Collateral value of real property is generally based on third party appraisals that conform to Uniform Standards of Professional Appraisal Practice, less estimated selling costs. Appraised values are on an “as-is” basis and generally are not adjusted by the Company. Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values may have declined. Collateral value of mineral rights is determined by our internal staff of engineers based on projected cash flows under current market conditions. The value of other collateral is generally determined by our special assets staff based on liquidation cash flows under current market conditions. Collateral values and available cash resources that support impaired loans are evaluated quarterly. Historical statistics may be used as a practical way to estimate impairment in limited situations, such as when a collateral dependent loan is identified as impaired near the end of a reporting period until an updated appraisal of collateral value is received or a full assessment of future cash flows is completed. Estimates of future cash flows and collateral values require significant judgments and may be volatile.

General allowances for unimpaired loans are based on estimated loss rates by loan class. The appropriate historical gross loss rate for each loan class is determined by the greater of the current loss rate based on the most recent twelve months or a ten-year average gross loss rate. Recoveries are not directly considered in the estimation of historical loss rates. Recoveries generally do not follow predictable patterns and are not received until well-after the charge-off date as a result of protracted legal proceedings. For risk graded loans, historical loss rates are adjusted for changes in risk rating. For each loan class, the weighted average current risk grade is compared to the weighted average long-term risk grade. This comparison determines whether the risk in each loan class is increasing or decreasing. Historical loss rates are adjusted upward or downward in proportion to changes in weighted average risk grading. General allowances for unimpaired loans also consider inherent risks identified for a given loan class. Inherent risks include consideration of the loss rates that most appropriately represent the current credit cycle and other factors attributable to a specific loan class which have not yet been represented in the historical gross loss rates or risk grading. Examples of these factors include changes in commodity prices or engineering imprecision which may affect the value of reserves that secure our energy loan portfolio, construction risk that may affect commercial real estate loans, changes in regulations and public policy that may disproportionately impact health care loans and changes in loan product types.

Nonspecific allowances are maintained for risks beyond factors specific to a particular portfolio segment or loan class. These factors include trends in the economy in our primary lending areas, concentrations in loans with large balances and other relevant factors.

Fair Value Measurement

Certain assets and liabilities are recorded at fair value in the Consolidated Financial Statements. Fair value is defined by applicable accounting guidance as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal markets for the given asset or liability at the measurement date based on markets conditions at that date. An orderly transaction assumes exposure to the market for a customary period for marketing activities prior to the measurement date and not a forced liquidation or distressed sale.

A hierarchy for fair value has been established that prioritizes the inputs of valuation techniques used to measure fair value into three broad categories: unadjusted quoted prices in active markets for identical assets or liabilities (Level 1), other observable inputs that can be observed either directly or indirectly (Level 2) and unobservable inputs for assets or liabilities (Level 3). Fair value may be recorded for certain assets and liabilities every reporting period on a recurring basis or under certain circumstances on a non-recurring basis.

The following represents significant fair value measurements included in the Consolidated Financial Statements based on estimates. See Note 18 of the Consolidated Financial Statements for additional discussion of fair value measurement and disclosure included in the Consolidated Financial Statements.

Mortgage Servicing Rights

We have a significant investment in mortgage servicing rights. Our mortgage servicing rights are primarily retained from sales in the secondary market of residential mortgage loans we have originated or purchased from correspondent lenders. Occasionally mortgage servicing rights may be purchased from other lenders. Both originated and purchased mortgage servicing rights are initially recognized at fair value. We carry all mortgage servicing rights at fair value. Changes in fair value are recognized in earnings as they occur.


21



There is no active market for mortgage servicing rights after origination. The fair value of mortgage servicing rights are determined by discounting the projected cash flows. Certain significant assumptions and estimates used in valuing mortgage servicing rights are based on current market sources including projected prepayment speeds, assumed servicing costs, earnings on escrow deposits, ancillary income and discount rates. Assumptions used to value our mortgage servicing rights are considered significant unobservable inputs and represent our best estimate of assumptions that market participants would use to value this asset. A separate third party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. The prepayment model is updated daily for changes in market conditions and adjusted to better correlate with actual performance of our servicing portfolio. The discount rate is based on benchmark rates for mortgage loans plus a market spread expected by investors in servicing rights. Significant assumptions used to determine the fair value of our mortgage servicing rights are presented in Note 7 to the Consolidated Financial Statements. At least annually, we request estimates of fair value from outside sources to corroborate the results of the valuation model.

The assumptions used in this model are primarily based on mortgage interest rates. Evaluation of the effect of a change in one assumption without considering the effect of that change on other assumptions is not meaningful. Considering all related assumptions, we expect a 50 basis point increase in primary mortgage interest rates to increase the fair value of our servicing rights by $17 million. We expect a $19 million decrease in the fair value of our mortgage servicing rights from a 50 basis point decrease in primary mortgage interest rates.

Valuation of Derivative Instruments

We use interest rate derivative instruments to manage our interest rate risk. We also offer interest rate, commodity, foreign exchange and equity derivative contracts to our customers. All derivative instruments are carried on the balance sheet at fair value. Fair values for exchange-traded contracts are based on quoted prices in an active market for identical instruments. Fair values for over-the-counter interest rate contracts used to manage our interest rate risk are generated internally using third-party valuation models. Inputs used in third-party valuation models to determine fair values are considered significant other observable inputs. Fair values for interest rate, commodity, foreign exchange and equity contracts used in our customer hedging programs are based on valuations generated internally by third-party provided pricing models. These models use significant other observable market inputs to estimate fair values. Changes in assumptions used in these pricing models could significantly affect the reported fair values of derivative assets and liabilities, though the net effect of these changes should not significantly affect earnings.

Credit risk is considered in determining the fair value of derivative instruments. Deterioration in the credit rating of customers or dealers reduces the fair value of asset contracts. The reduction in fair value is recognized in earnings during the current period. Fair value adjustments are based on various risk factors including but not limited to counterparty credit rating or equivalent loan grading, derivative contract notional size, price volatility of the underlying commodity, duration of the derivative contracts and expected loss severity. Expected loss severity is based on historical losses for similarly risk-graded commercial loan customers. Deterioration in our credit rating below investment grade would affect the fair value of our derivative liabilities. In the event of a credit down-grade, the fair value of our derivative liabilities would decrease. The reduction in fair value would be recognized in earnings in the current period. The impact of credit valuation adjustments on the total valuation of derivative contracts was not significant.

Valuation of Securities

The fair value of our securities portfolio is generally based on a single price for each financial instrument provided to us by a third-party pricing service determined by one or more of the following:

Quoted prices for similar, but not identical, assets or liabilities in active markets;
Quoted prices for identical or similar assets or liabilities in inactive markets;
Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates;
Other inputs derived from or corroborated by observable market inputs.


22



The underlying methods used by the third-party pricing services are considered in determining the primary inputs used to determine fair values. We evaluate the methodologies employed by the third-party pricing services by comparing the price provided by the pricing service with other sources, including brokers' quotes, sales or purchases of similar instruments and discounted cash flows to establish a basis for reliance on the pricing service values. Significant differences between the pricing service provided value and other sources are discussed with the pricing service to understand the basis for their values. Based on all observable inputs, management may adjust prices obtained from third-party pricing services to more appropriately reflect the prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market. No significant adjustments were made to prices provided by third-party pricing services at December 31, 2015 or December 31, 2014 .

Valuation of Impaired Loans and Real Estate and Other Repossessed Assets

The fair value of collateral for certain impaired loans and real estate and other repossessed assets is measured on a non-recurring basis. The fair value of real estate is generally based on unadjusted third-party appraisals derived principally from or corroborated by observable market data. Fair value measurements based on these appraisals are considered to be based on Level 2 inputs. Fair value measurements based on appraisals that are not based on observable inputs or that require significant adjustments by us or fair value measurements that are not based on third-party appraisals are considered to be based on Level 3 inputs. Significant unobservable inputs include listing prices for comparable assets, uncorroborated expert opinions or management's knowledge of the collateral or industry.

The fair value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. Proven oil and gas reserves are estimated quantities that geological and engineering data demonstrate, with reasonable certainty, to be recoverable in future years from known reservoirs using existing prices and costs. Projected cash flows incorporate assumptions related to a number of factors including production, sales prices, operating expenses, severance, ad valorem taxes, capital costs and appropriate discount rate. Fair values determined through this process are considered to be based on Level 3 inputs.
Goodwill Impairment

Goodwill for each reporting unit is evaluated for impairment annually as of October 1st or more frequently if conditions indicate that impairment may have occurred. The evaluation of possible goodwill impairment involves significant judgment based upon short-term and long-term projections of future performance.

We perform a qualitative assessment that evaluates, based on the weight of the evidence, the significance of all identified events and circumstances in the context of determining whether it is more likely than not that the fair value of our reporting units are less than their carrying amounts, including goodwill. This qualitative assessment considers general economic conditions including trends in unemployment rates in our primary geographical areas, our earnings and stock price changes during the year, current and anticipated credit quality performance and the prolonged low interest rate environment and the impact of increased regulation. The qualitative assessment is supplemented by quantitative analysis that compares the Company's overall performance and each individual reporting unit's performance against prior period actual results and management's plans, and the excess of each reporting unit's most recently measured fair value over its carrying value, including goodwill attributed to the reporting unit.

If we conclude that it is not more likely than not that the fair value of each reporting unit is less than its carrying amount, including goodwill through the qualitative assessment, we perform a quantitative assessment. The quantitative assessment considers goodwill to be impaired if the estimated fair value of the reporting unit is less than its carrying value, including goodwill. Impairment is measured through additional assessment of the estimated fair values for each asset and liability assigned to the reporting unit when necessary.

Numerous other factors could affect future impairment analyses including credit losses that exceed projected amounts or failure to meet growth projections. Additionally, fee income may be adversely affected by increasing residential mortgage interest rates and changes in federal regulations.



23



Other-Than-Temporary Impairment

On a quarterly basis, the Company performs separate evaluations of impaired debt and equity investment and available for sale securities to determine if the unrealized losses are temporary or other-than-temporary.
For impaired debt securities, management determines whether it intends to sell or if it is more-likely-than-not that it will be required to sell the impaired securities. This determination considers current and forecasted liquidity requirements, regulatory and capital requirements and securities portfolio management. All impaired debt securities we intend to sell or we expect to be required to sell are considered other-than-temporarily impaired and the full impairment loss is recognized as a charge against earnings. All impaired debt securities we do not intend or expect to be required to sell are evaluated further.
Impairment of debt securities rated investment grade by all nationally-recognized rating agencies is considered temporary unless specific contrary information is identified. Impairment of securities rated below investment grade by at least one of the nationally-recognized rating agencies is evaluated to determine if we expect to recover the entire amortized cost basis of the security based on the present value of projected cash flows from individual loans underlying each security. Below investment grade securities we own consist primarily of privately issued residential mortgage-backed securities. The primary assumptions used to project cash flows are disclosed in Note 2 to the Consolidated Financial Statements.

We consider the principal and interest cash flows from the underlying loan pool as well as the remaining credit enhancement coverage as part of our assessment of cash flows available to recover the amortized cost of our securities. The credit enhancement coverage is an estimate of currently remaining subordinated tranches available to absorb losses on pools of loans that support the security. Credit losses, which are defined as the excess of current amortized cost over the present value of projected cash flows, on other-than-temporarily impaired debt securities are recognized as a charge against earnings. Any remaining impairment attributed to factors other than credit losses are recognized in accumulated other comprehensive losses.

Credit losses are based on long-term projections of cash flows which are sensitive to changes in assumptions. Changes in assumptions and differences between assumed and actual results regarding unemployment rates, delinquency rates, default rates, foreclosures costs and home price depreciation can affect estimated and actual credit losses. Deterioration of these factors beyond those described in Note 2 to the Consolidated Financial Statements could result in the recognition of additional credit losses.
We performed a sensitivity analysis of all privately issued residential mortgage-backed securities. Significant assumptions of this analysis included an increase in the unemployment rate to 10% with an additional 25.4% home price depreciation indicates an additional $300 thousand of credit losses are possible.

Impaired equity securities, including perpetual preferred stocks, are evaluated based on our ability and intent to hold the securities until fair value recovers over a period not to exceed three years. The assessment of the ability and intent to hold these securities considers liquidity needs, asset / liability management objectives and securities portfolio objectives. Factors considered when assessing recovery include forecasts of general economic conditions and specific performance of the issuer, analyst ratings, and credit spreads for preferred stocks which have debt-like characteristics .


Income Taxes

Determination of income tax expense and related assets and liabilities is complex and requires estimates and judgments when applying tax laws, rules, regulations and interpretations. It also requires judgments as to future earnings and the timing of future events. Accrued income taxes represent an estimate of net amounts due to or from taxing jurisdictions based upon these estimates, interpretations and judgments.

Management evaluates the Company's current tax expense or benefit based upon estimates of taxable income, tax credits and statutory tax rates. Annually, we file tax returns with each jurisdiction where we conduct business and adjust recognized income tax expense or benefit to filed tax returns.

We recognize deferred tax assets and liabilities based upon the differences between the values of assets and liabilities as recognized in the financial statements and their related tax basis using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. A valuation allowance is provided when it is more likely than not that some portion of the entire deferred tax asset may not be realized based on taxes previously paid in net loss carry-back periods and other factors.


24



We also recognize the benefit of uncertain income tax positions when based upon all relevant evidence it is more-likely-than-not that our position would prevail upon examination, including resolution of related appeals or litigation, based upon the technical merits of the position. Unrecognized tax benefits, including estimated interest and penalties, are part of our current accrued income tax liability. Estimated penalties and interest are recognized in income tax expense. Income tax expense in future periods may decrease if an uncertain tax position is favorably resolved, generally upon completion of an examination by the taxing authorities, expiration of a statute of limitations, or changes in facts and circumstances.
Results of Operations
Net Interest Revenue and Net Interest Margin

Net interest revenue is the interest earned on debt securities, loans and other interest-earning assets less interest paid for interest-bearing deposits and other borrowings. The net interest margin is calculated by dividing tax-equivalent net interest revenue by average interest-earning assets. Net interest spread is the difference between the average rate earned on interest-earning assets and the average rate paid on interest-bearing liabilities. Net interest margin is typically greater than net interest spread due to interest income earned on assets funded by non-interest bearing liabilities such as demand deposits and equity.

Tax-equivalent net interest revenue totaled $715.8 million for 2015 , up from $676.1 million for 2014 . Net interest margin was 2.60% for 2015 and 2.68% for 2014 . Tax-equivalent net interest revenue increase d $39.7 million over the prior year. Net interest revenue increased $60.1 million from growth in earning assets, partially offset by a $20.4 million decrease due to rates. Loan yields narrowed, partially offset by lower funding costs and increased yield on the available for sale securities portfolio. Table 2 shows the effects on net interest revenue of changes in average balances and interest rates for the various types of earning assets and interest-bearing liabilities. In addition, see the Annual and Quarterly Financial Summary of consolidated daily average balances, yields and rates following the Consolidated Financial Statements.

The tax-equivalent yield on earning assets was 2.84% for 2015 compared to 2.95% in 2014 . The decrease was primarily due to the change in the mix of earning asset during 2015. Loan yields decrease d 23 basis points compared to the prior year primarily due to market pricing pressure and lower interest rates during the majority of 2015. The available for sale securities portfolio yield increase d 4 basis points to 1.99% . Yields on restricted equity securities, fair value option securities and interest-bearing cash and cash equivalents all improved over the prior year. Funding costs were down 6 basis points compared to 2014 . The cost of interest-bearing deposits decrease d 6 basis points, while the cost of other borrowed funds increase d 5 basis points largely due to the mix of funding sources. The cost of subordinated debentures decrease d 66 basis points as $122 million of fixed-rate subordinated debt matured on June 1, 2015. The cost of this subordinated debt was 5.56%. The benefit to net interest margin from earning assets funded by non-interest bearing liabilities was 11 basis points for 2015 , compared to 14 basis points for 2014 .

Average earning assets for 2015 increase d $2.4 billion or 9% over 2014 . Average loans, net of allowance for loan losses, increase d $1.6 billion due primarily to growth in average commercial and commercial real estate loans. The average balance of interest-bearing cash and cash equivalents was up $904 million over the prior year, as borrowings from the Federal Home Loan Bank were deposited in the Federal Reserve to earn a spread. The average balance of available for sale securities, which consists largely of residential and commercial mortgage-backed securities guaranteed by U.S. government agencies, decrease d $620 million . We purchase securities to supplement earnings and to manage interest rate risk. We reduced the size of our bond portfolio during 2014 and 2015 through normal monthly runoff to better position the balance sheet for an environment of rising longer-term rates. Our outlook for earning assets is for continued growth in loan balances, partially offset by a reduction in the securities portfolio balance. We expect mid to high single digit annualized loan growth for 2016 and a decrease in the size of the bond portfolio as we migrate toward interest rate neutral. We expect stable to rising net interest margin and increasing net interest revenue.

Growth in average assets was funded by a $518 million increase in average deposits. Average demand deposit balances increase d $361 million over the prior year. Average interest-bearing transaction accounts were up $182 million , partially offset by a $57 million decrease in average time deposits. Average borrowed funds increase d $1.7 billion over the prior year. Borrowings from the Federal Home Loan Banks increase d $3.0 billion , partially offset by decreased funds purchased, repurchase agreements and subordinated debenture balances compared to the prior year.


25



Our overall objective is to manage the Company’s balance sheet to be relatively neutral to changes in interest rates as is further described in the Market Risk section of this report. As shown in Table 20 , approximately 82% of our commercial and commercial real estate loan portfolios are either variable rate loans or fixed rate loans that will re-price within one year. These loans are funded primarily by deposit accounts that are either non-interest bearing, or that re-price more slowly than the loans. The result is a balance sheet that would be asset sensitive, which means that assets generally re-price more quickly than liabilities. Among the strategies that we use to manage toward a relatively rate-neutral position, we purchase fixed rate residential mortgage-backed securities issued primarily by U.S. government agencies and fund them with market rate sensitive liabilities. The liability-sensitive nature of this strategy provides an offset to the asset-sensitive characteristics of our loan portfolio. We also may use derivative instruments to manage our interest rate risk.

The effectiveness of these strategies is reflected in the overall change in net interest revenue due to changes in interest rates as shown in Table 2 and in the interest rate sensitivity projections as shown in the Market Risk section of this report.

Fourth Quarter 2015 Net Interest Revenue

Tax-equivalent net interest revenue totaled $184.5 million for the fourth quarter of 2015 , up from $172.5 million for the fourth quarter of 2014 . Net interest margin was 2.64% for the fourth quarter of 2015 and 2.61% for the fourth quarter of 2014 .

Tax-equivalent net interest revenue increase d $12.0 million over the fourth quarter of 2014 . Net interest revenue increased $15.4 million primarily due to the growth in average loan balances, partially offset by a decrease in available for sale securities and interest-bearing cash and cash equivalent balances. Net interest revenue decreased $3.4 million due primarily to lower loan yields, partially offset by lower funding costs and increased yield on the available for sale securities portfolio.

The tax-equivalent yield on earning assets was 2.86% for the fourth quarter of 2015 , unchanged compared to the fourth quarter of 2014 . Loan yields decreased 18 basis points due primarily to continued market pricing pressure and lower interest rates compared to the fourth quarter of 2014 . The available for sale securities portfolio yield increased 5 basis points to 2.04% . The yield on interest-bearing cash and cash equivalents increased 1 basis point to 0.29% . Funding costs were down 5 basis points from the fourth quarter of 2014 . The cost of interest-bearing deposits decreased 6 basis points and the cost of other borrowed funds increased 9 basis points . The benefit to net interest margin from earning assets funded by non-interest bearing liabilities was 12 basis points in the fourth quarter of 2015 and 14 basis points in the fourth quarter of 2014 .

Average earning assets for the fourth quarter of 2015 increased $1.6 billion over the fourth quarter of 2014 . Average loans, net of allowance for loan losses, increased $1.7 billion over the fourth quarter of 2014 due primarily to growth in average commercial and commercial real estate loans. The average balance of interest-bearing cash and cash equivalents and available for sale securities decreased compared to the fourth quarter of 2014 , partially offset by an increase in the average balance of fair value option securities held as an economic hedge of mortgage servicing rights and restricted equity securities.

Average deposits increased $7.4 million over the fourth quarter of 2014 . Average demand deposit balances increase d $339 million . Average interest-bearing transaction accounts decrease d $203 million and average time deposits decrease d $164 million . Average borrowed funds increased $1.6 billion over the fourth quarter of 2014 primarily due to increased Federal Home Loan Bank borrowings.

2014 Net Interest Revenue

Tax-equivalent net interest revenue for 2014 was $676.1 million compared to $684.8 million for 2013 . Net interest margin was 2.68% for 2014 compared to 2.80% for 2013 . The decrease in net interest margin was due primarily to narrowing loan yields during the year, partially offset by growth in earning assets.

The tax-equivalent yield on average earning assets decrease d 14 basis points from 2013 . Loan yields decrease d 29 basis points. Spreads narrowed primarily due to market pricing pressure. The available for sale securities portfolio yield was down 2 basis points due to cash flow reinvestment at lower rates. The cost of interest-bearing liabilities decrease d 2 basis points. The cost of interest-bearing deposits was down 4 basis points and the cost of other borrowed funds increase d 3 basis points largely due to the mix of funding sources.


26



Average earning assets increase d $537 million during 2014 . Average loans, net of allowance for loan losses, increase d $1.1 billion and the average balance of the available for sale securities portfolio decrease d $1.2 billion . We began to proactively shrink the size of our securities portfolio beginning in the fourth quarter of 2013 to better position the balance sheet for an environment of rising longer-term rates. The average balance of interest-bearing cash and cash equivalents grew by $624 million over 2013 . Growth in average assets was funded by a $692 million increase in average deposit balances and a $20 million decrease in average borrowed funds balances. Average demand deposit account balances grew by $597 million and average interest-bearing transaction account balances grew by $214 million , partially offset by a $151 million decrease in average time deposit balances. At the end of August 2014, we increased our borrowings from the Federal Home Loan Banks by approximately $1.5 billion, earning a small spread by depositing the proceeds in the Federal Reserve. Increased borrowings from the Federal Home Loan Banks and increased repurchase agreement balances were offset by a decrease in average funds purchased compared to 2013 .
Table 2 Volume/Rate Analysis
(In thousands)
Year Ended
Year Ended
December 31, 2015 / 2014
December 31, 2014 / 2013
Change Due To 1
Change Due To 1
Change
Volume
Yield /
Rate
Change
Volume
Yield
/Rate
Tax-equivalent interest revenue:
Interest-bearing cash and cash equivalents
$
2,831

$
2,331

$
500

$
1,674

$
1,417

$
257

Trading securities
535

625

(90
)
(176
)
(813
)
637

Investment securities:
Taxable securities
(251
)
172

(423
)
(1,077
)
(670
)
(407
)
Tax-exempt securities
(814
)
(579
)
(235
)
461

1,281

(820
)
Total investment securities
(1,065
)
(407
)
(658
)
(616
)
611

(1,227
)
Available for sale securities:
Taxable securities
(10,341
)
(13,401
)
3,060

(21,907
)
(19,705
)
(2,202
)
Tax-exempt securities
20

(417
)
437

(177
)
(778
)
601

Total available for sale securities
(10,321
)
(13,818
)
3,497

(22,084
)
(20,483
)
(1,601
)
Fair value option securities
5,653

5,025

628

(296
)
(446
)
150

Restricted equity securities
6,492

5,659

833

1,969

(505
)
2,474

Residential mortgage loans held for sale
3,459

4,540

(1,081
)
1,638

206

1,432

Loans
28,510

61,236

(32,726
)
5,413

42,410

(36,997
)
Total tax-equivalent interest revenue
36,094

65,191

(29,097
)
(12,478
)
22,397

(34,875
)
Interest expense:
Transaction deposits
(936
)
110

(1,046
)
(1,398
)
382

(1,780
)
Savings deposits
(18
)
45

(63
)
(41
)
33

(74
)
Time deposits
(5,559
)
(839
)
(4,720
)
(3,442
)
(2,346
)
(1,096
)
Funds purchased
(276
)
(336
)
60

(507
)
(310
)
(197
)
Repurchase agreements
(301
)
(106
)
(195
)
80

75

5

Other borrowings
7,109

7,744

(635
)
1,510

780

730

Subordinated debentures
(3,590
)
(1,537
)
(2,053
)
(51
)
(6
)
(45
)
Total interest expense
(3,571
)
5,081

(8,652
)
(3,849
)
(1,392
)
(2,457
)
Tax-equivalent net interest revenue
39,665

60,110

(20,445
)
(8,629
)
23,789

(32,418
)
Change in tax-equivalent adjustment
1,505

654

Net interest revenue
$
38,160

$
(9,283
)
1 Changes attributable to both volume and yield/rate are allocated to both volume and yield/rate on an equal basis.



27



Table 2 Volume/Rate Analysis (continued)
(In thousands)
Three Months Ended
December 31, 2015 / 2014
Change Due To 1
Change
Volume
Yield /
Rate
Tax-equivalent interest revenue:
Interest-bearing cash and cash equivalents
$
(34
)
$
(77
)
$
43

Trading securities
(61
)
(187
)
126

Investment securities:
Taxable securities
(324
)
(164
)
(160
)
Tax-exempt securities
(173
)
(146
)
(27
)
Total investment securities
(497
)
(310
)
(187
)
Available for sale securities:
Taxable securities
(304
)
(1,507
)
1,203

Tax-exempt securities
(118
)
(116
)
(2
)
Total available for sale securities
(422
)
(1,623
)
1,201

Fair value option securities
1,408

1,306

102

Restricted equity securities
1,270

1,142

128

Residential mortgage loans held for sale
(133
)
(120
)
(13
)
Loans
8,994

15,661

(6,667
)
Total tax-equivalent interest revenue
10,525

15,792

(5,267
)
Interest expense:
Transaction deposits
(230
)
(138
)
(92
)
Savings deposits
(7
)
10

(17
)
Time deposits
(1,896
)
(552
)
(1,344
)
Funds purchased
7

1

6

Repurchase agreements
(41
)
(39
)
(2
)
Other borrowings
2,277

1,691

586

Subordinated debentures
(1,545
)
(555
)
(990
)
Total interest expense
(1,435
)
418

(1,853
)
Tax-equivalent net interest revenue
11,960

15,374

(3,414
)
Change in tax-equivalent adjustment
363

Net interest revenue
$
11,597

1 Changes attributable to both volume and yield/rate are allocated to both volume and yield/rate on an equal basis.

28



Other Operating Revenue

Other operating revenue was $666.9 million for 2015 , up $44.9 million or 7% over 2014 . Fees and commissions revenue increase d $37.7 million or 6% over 2014 . The change in the fair value of mortgage servicing rights, net of economic hedges, decreased other operating revenue by $7.9 million in 2015 and decreased other operating revenue by $3.7 million in 2014 . Net gains on available for sale securities were $10.5 million more than net gains recognized in 2014 . Other-than-temporary impairment charges recognized in earnings in 2015 were $1.4 million more than charges recognized in 2014 .

Table 3 Other Operating Revenue
(In thousands)
Year Ended December 31,
2015
2014
2013
2012
2011
Brokerage and trading revenue
$
129,556

$
134,437

$
125,478

$
126,930

$
104,181

Transaction card revenue
128,621

123,689

116,823

107,985

116,757

Fiduciary and asset management revenue
126,153

115,652

96,082

80,053

73,290

Deposit service charges and fees
90,431

90,911

95,110

98,917

95,872

Mortgage banking revenue
134,375

109,093

121,934

169,302

91,643

Bank-owned life insurance
9,304

9,086

10,155

11,089

11,280

Other revenue
40,579

38,451

38,262

34,604

34,070

Total fees and commissions revenue
659,019


621,319

603,844

628,880

527,093

Gain on other assets, net
5,702

2,953

4,875

2,397

8,666

Gain (loss) on derivatives, net
430

2,776

(4,367
)
(301
)
2,686

Gain (loss) on fair value option securities, net
(3,684
)
10,189

(15,212
)
9,230

24,413

Change in fair value of mortgage servicing rights
(4,853
)
(16,445
)
22,720

(9,210
)
(40,447
)
Gain on available for sale securities, net
12,058

1,539

10,720

33,845

34,144

Total other-than-temporary impairment
(2,443
)
(373
)
(2,574
)
(1,144
)
(10,578
)
Portion of loss recognized in (reclassified from) other comprehensive income
624


266

(6,207
)
(12,929
)
Net impairment losses recognized in earnings
(1,819
)
(373
)
(2,308
)
(7,351
)
(23,507
)
Total other operating revenue
$
666,853

$
621,958

$
620,272

$
657,490

$
533,048


Fees and commissions revenue

Diversified sources of fees and commissions revenue are a significant part of our business strategy and represented 48% of total revenue for 2015 , excluding provision for credit losses and gains and losses on asset sales, securities and derivatives and the change in the fair value of mortgage servicing rights. We believe that a variety of fee revenue sources provide an offset to changes in interest rates, values in the equity markets, commodity prices and consumer spending, all of which can be volatile. As an example of this strength, many of the economic factors that cause net interest revenue compression such as falling interest rates may also drive growth in our mortgage banking revenue. We expect growth in other operating revenue to come through offering new products and services and by further development of our presence in other markets. However, current and future economic conditions, regulatory constraints, increased competition and saturation in our existing markets could affect the rate of future increases.

Brokerage and trading revenue, which includes revenues from securities trading, retail brokerage, customer hedging and investment banking decrease d $4.9 million compared to the prior year.

Securities trading revenue totaled $44.7 million for 2015 , an increase of $4.0 million or 10% over the prior year. Securities trading revenue represents net realized and unrealized gains primarily related to sales of U.S. government securities, residential mortgage-backed securities guaranteed by U.S. government agencies and municipal securities to institutional customers.


29



Customer hedging revenue is based primarily on realized and unrealized changes in the fair value of derivative contracts held for customer risk management programs. As more fully discussed under Customer Derivative Programs in Note 3 of the Consolidated Financial Statements, we offer commodity, interest rate, foreign exchange and equity derivatives to our customers. Customer hedging revenue totaled $40.9 million for 2015 , an increase of $3.1 million or 8% compared to 2014 . The volume of derivative contracts sold to our mortgage banking customers used to hedge their pipelines of mortgage loan originations increased as average mortgage rates trended down during 2015. This increase was partially offset by a decrease in revenue from derivative contracts sold to energy customers primarily due to the decrease in energy prices during 2015. The Company also received recoveries from the Lehman Brothers and MF Global bankruptcies related to derivative contract losses incurred in 2008 of $669 thousand during 2015 and $2.2 million during 2014 .

Revenue earned from retail brokerage transactions totaled $24.5 million for 2015 , a decrease of $9.5 million or 28% compared to the prior year. Retail brokerage revenue is primarily based on fees and commissions earned on sales of fixed income securities, annuities and mutual funds to retail customers. Revenue is primarily based on the volume of customer transactions and applicable commission rate for each type of product. During 2015, activity shifted from sales of products that pay us at a higher commission rate to sales of products that pay us at a lower commission rate. The decrease in revenue from changes in product mix was partially offset by growth in transaction volume. In addition, volume shifted from sales of products that pay us a one-time transaction fee to accounts that pay us an ongoing management fee.

Investment banking, which includes fees earned upon completion of underwriting, financial advisory services and loan syndication fees totaled $19.4 million for 2015 , a decrease of $2.5 million or 11% compared to 2014 related to the timing and volume of completed transactions.

Transaction card revenue depends largely on the volume and amount of transactions processed, the number of TransFund automated teller machine (“ATM”) locations and the number of merchants served. Transaction card revenue totaled $128.6 million for 2015 , a $4.9 million or 4% increase over 2014 . Revenues from the processing of transactions on behalf of the members of our TransFund electronic funds transfer ("EFT") network totaled $65.2 million , up $1.5 million or 2% over 2014 , due primarily to increased transaction volumes. The number of TransFund ATM locations totaled 1,972 at December 31, 2015 compared to 2,080 at December 31, 2014 . Merchant services fees paid by customers for account management and electronic processing of card transactions totaled $44.3 million , an increase of $3.1 million or 7% over the prior year. The increase was primarily due to higher transaction processing volume throughout our geographical footprint. Revenue from interchange fees paid by merchants for transactions processed from debit cards issued by the Company totaled $19.0 million , an increase of $292 thousand or 2% over 2014 due to increased transaction volume.

Fiduciary and asset management revenue grew $10.5 million or 9% over 2014 . A full year of revenue in 2015 from the acquisitions of Topeka, Kansas-based GTRUST Financial Corporation in the first quarter of 2014 and Houston, Texas-based MBM Advisors in the second quarter of 2014 added $4.0 million in revenue in 2015. The remaining increase was primarily due to the growth in the fair value of fiduciary assets administered by the Company. Fiduciary assets are assets for which the Company possesses investment discretion on behalf of another, or any other similar capacity. The fair value of fiduciary assets administered by the Company totaled $38.3 billion at December 31, 2015 and $36.0 billion at December 31, 2014 .

We also earn fees as administrator to and investment adviser for the Cavanal Hill Funds, a diversified, open-ended investment company established as a business trust under the Investment Company Act of 1940 (the "1940 Act"). The Bank is custodian and BOSC, Inc. is distributor for the Funds. The Funds’ products are offered to customers, employee benefit plans, trusts and the general public in the ordinary course of business. We have voluntarily waived administration fees on the Cavanal Hill money market funds in order to maintain positive yields on these funds in the current low short-term interest rate environment. Waived fees totaled $12.5 million for 2015 compared to $10.1 million for 2014 .

Deposit service charges and fees decrease d $480 thousand or 1% compared to 2014 . Overdraft fees totaled $41.2 million for 2015 , a decrease of $3.4 million or 8% compared to last year. Commercial account service charge revenue totaled $42.1 million , an increase $3.4 million or 9% over the prior year. Service charges on deposit accounts with a standard monthly fee were $7.0 million , a decrease of $405 thousand or 5% compared to the prior year.


30



Mortgage banking revenue totaled $134.4 million for 2015 , a $25.3 million or 23% increase over 2014 . Mortgage production revenue totaled $78.0 million , an increase of $16.9 million over the prior year. A record $6.4 billion of mortgage loans were funded for sale during 2015, an increase of $1.9 billion or 42% over 2014 . The record volume of originations was due primarily to the expansion of our correspondent and Home Direct online lending channels and a decrease in average primary mortgage interest rates during 2015. Approximately 46% of loans originated in 2015 were through correspondent channels and 15% were through our Home Direct online channel. The correspondent and Home Direct online lending channels have lower margins than the retail lending channel. Loan refinances, which have higher margins than loans to finance home purchases, were 42% of loans originated in 2015 , compared to 30% in 2014 .

The unpaid principal balance of mortgage loans closed but not yet sold was $294 million at December 31, 2015 , $2.1 million or 1% higher than the prior year. Outstanding commitments to originate mortgage loans decrease d $26 million or 4% compared to December 31, 2014 to $601 million at December 31, 2015 . The cumulative change in the valuation of mortgage loans held for sale and mortgage commitments, net of forward sales contracts, was a $2.2 million gain for 2015 , compared to a $4.4 million gain for 2014 .

Mortgage servicing revenue was $56.4 million , an increase of $8.4 million or 17% over the prior year. The outstanding principal balance of mortgage loans serviced for others totaled $19.7 billion , a $3.5 billion increase over December 31, 2014 .

Table 4 Mortgage Banking Revenue
(In thousands)
Year Ended December 31,
2015
2014
2013
2012
2011
Net realized gains on mortgage loans sold
$
75,780

$
56,696

$
95,309

$
115,879

$
50,812

Change in net unrealized gains on mortgage loans held for sale
2,180

4,365

(15,764
)
13,238

1,170

Total mortgage production revenue
77,960

61,061

79,545

129,117

51,982

Servicing revenue
56,415

48,032

42,389

40,185

39,661

Total mortgage revenue
$
134,375

$
109,093

$
121,934

$
169,302

$
91,643

Mortgage loans funded for sale
$
6,372,956

$
4,484,394

$
4,081,390

$
3,708,350

$
2,293,834

Mortgage loan refinances to total funded
42
%
30
%
43
%
60
%
53
%
Mortgage loans sold
$
6,446,659

$
4,441,819

$
4,254,151

$
3,731,830

$
2,369,895

Primary residential mortgage interest rate average
3.89
%
4.17
%
3.99
%
3.66
%
4.45
%
Secondary residential mortgage interest rate average
2.91
%
3.22
%
3.05
%
2.52
%
3.71
%

Primary rates disclosed in Table 4 above represent rates generally available to borrowers on 30 year conforming mortgage loans. Secondary rates represent rates generally paid on 30 year residential mortgage-backed securities guaranteed by U.S. government agencies.

Dec. 31,
2015
2014
2013
2012
2011
Outstanding principal balance of mortgage loans serviced for others
$
19,678,226

$
16,162,887

$
13,718,942

$
11,981,624

$
11,300,986

Outstanding mortgage loan commitments
601,147

627,505

258,873

356,634

189,770

Net gains on securities, derivatives and other assets

We recognized $12.1 million of net gains from sales of $1.6 billion of available for sale securities in 2015 . We recognized $1.5 million of net gains from sales of $2.7 billion of available for sale securities in 2014 . Securities were sold either because they had reached their expected maximum potential or to move into securities that are expected to perform better in a rising rate environment.


31



We also maintain a portfolio of residential mortgage-backed securities issued by U.S. government agencies and interest rate derivative contracts that are held as an economic hedge of the changes in the fair value of our mortgage servicing rights. The fair value of our mortgage servicing rights fluctuates due to changes in prepayment speeds and other assumptions as more fully described in Note 7 to the Consolidated Financial Statements. As primary mortgage rates increase, prepayment speeds slow and the value of our mortgage servicing rights increases. As primary mortgage rates fall, prepayment speeds increase and the value of our mortgage servicing rights decreases.

Changes in the fair value of mortgage servicing rights are highly dependent on changes in primary mortgage rates, rates offered to borrowers, and assumptions about servicing revenues, servicing costs and discount rates. Changes in the fair value of residential mortgage-backed securities and interest rate derivative contracts are highly dependent on changes in secondary mortgage rates, or rates required by investors. While primary and secondary mortgage rates generally move in the same direction, the spread between them may widen and narrow due to market conditions and government intervention. Changes in the spread between the primary and secondary rates can cause significant earnings volatility. Additionally, the fair value of mortgage servicing rights is dependent on short-term interest rates that affect the value of custodial funds. Changes in the spread between short-term and long-term interest rates can also cause significant earnings volatility.

Table 5 following shows the relationship between changes in the fair value of mortgage servicing rights and the fair value of fair value option residential mortgage-backed securities and interest rate derivative contracts held as an economic hedge. The decrease in the fair value of mortgage servicing rights for 2015 included factors that we do not hedge, such as an increase in the servicing cost assumption.

Table 5 Gain (Loss) on Mortgage Servicing Rights, Net of Economic Hedge
(In thousands)
Year Ended December 31,
2015
2014
2013
2012
2011
Gain (loss) on mortgage hedge derivative contracts, net
$
634

$
2,776

$
(5,080
)
$
116

$
2,974

Gain (loss) on fair value option securities, net
(3,684
)
10,003

(15,436
)
7,793

24,413

Gain (loss) on economic hedge of mortgage servicing rights
(3,050
)
12,779

(20,516
)
7,909

27,387

Gain (loss) on change in fair value of mortgage servicing rights
(4,853
)
(16,445
)
22,720

(9,210
)
(40,447
)
Gain (loss) on changes in fair value of mortgage servicing rights, net of economic hedges
$
(7,903
)
$
(3,666
)
$
2,204

$
(1,301
)
$
(13,060
)
Net interest revenue on fair value option securities 1
$
8,001

$
3,253

$
3,290

$
7,811

$
17,650

1
Actual interest earned on fair value option securities less internal transfer-priced cost of funds.

Net gains on other assets totaled $5.7 million for 2015 . The Company recognized a $1.7 million gain on the sale of bank premises and a $2.8 million gain on underlying investments held by two consolidated private equity funds. Private equity gains are largely attributed to non-controlling interests.

Fourth Quarter 2015 Other Operating Revenue

Other operating revenue was $161.1 million for the fourth quarter of 2015 , up $9.2 million over the fourth quarter of 2014 . Fees and commissions revenue decrease d $2.0 million . The change in the fair value of mortgage servicing rights, net of economic hedges, increased operating revenue $2.6 million for the fourth quarter of 2015 and decreased operating revenue $6.1 million for the fourth quarter of 2014 . Net gains on sales of available for sale securities were $2.0 million less than the prior year. Other-than-temporary impairment charges were $1.4 million more in the fourth quarter of 2015 than in the fourth quarter of 2014 .

Brokerage and trading revenue decrease d $347 thousand compared to the fourth quarter of 2014 . Securities trading revenue totaled $11.7 million for the fourth quarter of 2015 , an increase of $2.4 million . Customer hedging revenue totaled $9.6 million , a decrease of $342 thousand compared to the prior year. Revenue earned from retail brokerage transactions was $5.8 million , unchanged compared to the fourth quarter of 2014 . Investment banking revenue totaled $3.1 million , a $2.4 million decrease compared to the fourth quarter of 2014 related to the timing and volume of completed transactions.


32



Transaction card revenue for the fourth quarter of 2015 increase d $852 thousand or 3% over the fourth quarter of 2014 , primarily due to a $586 thousand increase in merchant services fees. Revenues from the processing of transactions on behalf of the members of our TransFund EFT network totaled $16.5 million , merchant services fees totaled $11.0 million and revenue from interchange fees paid by merchants for transactions processed from debit cards issued by the Company totaled $4.8 million .

Fiduciary and asset management revenue increase d $516 thousand over the fourth quarter of 2014 to $31.2 million primarily due to an increase in the fair value of assets managed. Waived administration fees on the Cavanal Hill money market funds totaled $3.5 million for the fourth quarter of 2015 , compared to $2.8 million for the fourth quarter of 2014 .

Deposit service charges and fees were $22.8 million for the fourth quarter of 2015 compared to $22.6 million for the fourth quarter of 2014 . Overdraft fees totaled $10.7 million , largely unchanged compared to the fourth quarter of 2014 . Commercial account service charge revenue totaled $10.4 million , an increase of $496 thousand . Service charges on deposit accounts with a standard monthly fee were $1.7 million , a decrease of $175 thousand .

Mortgage banking revenue was $25.0 million for the fourth quarter of 2015 , compared to $30.1 million for the fourth quarter of 2014 . Primary mortgage interest rates fell during the fourth quarter of 2014, driving loan production volume and higher loan commitment levels as of December 31, 2014. Average primary mortgage interest rates were approximately 8 basis points lower compared with the fourth quarter of 2014 , resulting in continued loan production volume growth and refinancing activity, but primary mortgage rates began trending upward at the end of the fourth quarter of 2015 . This resulted in a reduced level of outstanding commitments as of December 31, 2015. Mortgage loans funded for sale totaled $1.4 billion in the fourth quarter of 2015 compared to $1.3 billion in the fourth quarter of 2014 . Mortgage loan refinances represented 41% of total loans funded during the fourth quarter of 2015 , compared to 37% in the fourth quarter of 2014 . Loans originated by our correspondent channel increased to 46% of total loans funded during the fourth quarter of 2015 from 44% of total loans funded in the fourth quarter of 2014 . Outstanding mortgage loan commitments decrease d $26 million while the unpaid principal balance of mortgage loans held for sale was largely unchanged.

For the fourth quarter of 2015 , changes in the fair value of mortgage servicing rights increased operating revenue by $7.4 million , partially offset by a net loss of $4.9 million on fair value option securities and derivative contracts held as an economic hedge. For the fourth quarter of 2014 , changes in the fair value of mortgage servicing rights decreased operating revenue by $10.8 million , partially offset by a $4.8 million net gain on fair value option securities and derivative contracts held as an economic hedge.

2014 Other Operating Revenue

Other operating revenue totaled $622.0 million for 2014 , compared to $620.3 million for 2013 . Fees and commissions revenue increase d $17.5 million . The change in the fair value of mortgage servicing rights, net of economic hedges, decreased operating revenue in 2014 by $3.7 million and increased operating revenue $2.2 million in 2013 . Net gains on sales of available for sale securities were $1.5 million for 2014 compared to $10.7 million for 2013 . Other-than-temporary impairment charges recognized in earnings were $1.9 million less than charges recognized in 2013 .

Brokerage and trading revenue for 2014 increase d $9.0 million over 2013 . Revenue in 2013 was reduced $8.7 million from the impact of the fair value adjustment to our trading securities inventory due to a sharp increase in interest rates during 2013. Excluding this adjustment, securities trading revenue decreased $2.3 million. Customer hedging revenue decrease d $4.2 million . The decrease was primarily due to a decrease in revenue from derivative contracts sold to our mortgage banking and energy customers, partially offset by growth related to increased volumes of foreign exchange contracts. Customer hedging revenue for 2014 included $2.2 million of recoveries from the Lehman Brothers and MF Global bankruptcies and 2013 included $2.4 million of recoveries. Retail brokerage revenue was largely unchanged compared to 2013 and investment banking revenue increase d $6.8 million . Transaction card revenue grew by $6.9 million over 2013 primarily due to TransFund network transaction volume growth and higher merchant services transaction volumes. Fiduciary and asset management fees increase d $19.6 million . The GTRUST Financial Corporation and MBM Advisors acquisitions during 2014 added $7.8 million of revenue. The remaining was primarily due to growth in the fair value of fiduciary assets. Deposit service charges and fees decrease d $4.2 million primarily due to lower overdraft fees partially offset by increased commercial account service charges. Mortgage banking revenue decrease d $12.8 million compared to 2013 . While the volume of loans funded for sale and outstanding loan commitments increased, our product mix shifted toward lower margin products.


33



Net gains on other assets totaled $3.0 million for 2014 . The fair value of certain alternative investments held as a hedge of a deferred compensation liability were adjusted downward by $1.7 million and a $1.5 million charge was taken against a merchant-banking investment accounted for under the equity method. These losses were partially offset by a $6.6 million gain on underlying investments held by two consolidated private equity funds. Private equity gains are largely attributed to non-controlling interests.
Other Operating Expense

Other operating expense for 2015 totaled $904.6 million , a $57.0 million or 7% increase over the prior year. Personnel expense for 2014 included a $12.6 million net reduction in the accrual for amounts payable to certain executive officers under the 2011 True-Up Plan. Excluding the impact of the 2011 True-Up Plan adjustment, personnel expense increased $33.9 million or 7%. Non-personnel expenses increase d $10.5 million or 3% over the prior year.

Table 6 Other Operating Expense
(In thousands)
Year Ended December 31,
2015
2014
2013
2012
2011
Regular compensation
$
315,389

$
298,420

$
279,493

$
262,736

$
247,945

Incentive compensation:
Cash-based compensation
119,887

111,748

110,871

116,718

97,222

Share-based compensation
12,358

10,875

8,189

9,668

9,995

Deferred compensation
361

(13,692
)
32,083

27,502

10,563

Total incentive compensation
132,606

108,931

151,143

153,888

117,780

Employee benefits
75,492

69,580

74,589

74,409

64,261

Total personnel expense
523,487

476,931

505,225

491,033

429,986

Business promotion
27,851

26,649

22,598

23,338

20,549

Charitable contributions to BOKF Foundation
796

4,267

2,062

2,062

4,000

Professional fees and services
40,123

44,440

32,552

34,015

28,798

Net occupancy and equipment
76,016

77,232

69,773

66,726

64,611

Insurance
20,375

18,578

16,122

15,356

16,799

Data processing & communications
122,383

115,225

105,967

98,904

97,976

Printing, postage and supplies
13,498

13,518

13,885

14,228

14,085

Net losses & operating expenses of repossessed assets
1,446

6,019

5,160

20,528

23,715

Amortization of intangible assets
4,359

3,965

3,428

2,927

3,583

Mortgage banking costs
38,997

31,705

31,196

44,334

37,621

Other expense
35,233

28,993

32,652

26,912

37,575

Total other operating expense
$
904,564

$
847,522

$
840,620

$
840,363

$
779,298

Average number of employees (full-time equivalent)
4,797

4,679

4,683

4,614

4,474


Personnel expense

Regular compensation expense, which consists of salaries and wages, overtime pay and temporary personnel costs, increase d $17.0 million or 6% over 2014 . The average number of employees grew by 3% over the prior year. Recent additions have been higher-costing compliance and risk management, technology and wealth management positions. In addition, standard annual merit increases in regular compensation were effective for the majority of our staff March 1. Regular compensation expense for 2014 included $800 thousand related to branch closure costs.


34



Excluding the impact of the 2011 True-Up Plan adjustment in 2014, incentive compensation increase d $11.1 million or 9% over 2014 . Cash-based incentive compensation plans are either intended to provide current rewards to employees who generate long-term business opportunities for the Company based on growth in loans, deposits, customer relationships and other measurable metrics or intended to compensate employees with commissions on completed transactions. Total cash-based incentive compensation increase d $8.1 million or 7% over 2014 .

Share-based compensation expense represents expense for equity awards based on the grant-date fair value. Share-based compensation expense for equity awards increase d $1.5 million or 14% over 2014 primarily due to a change in the vesting period on non-vested shares awarded. Non-vested shares awarded prior to 2013 generally cliff vest in 5 years. Non-vested shares awarded since January 1, 2013 generally cliff vest in 3 years and are subject to a two year holding period after vesting.

The Company currently offers a deferred compensation plan for certain executive and senior officers. Deferred compensation expense totaled $361 thousand for 2015 . Deferred compensation expense for 2014 and prior years was largely based on the 2011 True-Up Plan. Approved by shareholders on April 26, 2011, the True-Up Plan was designed to adjust annual and long-term performance-based incentive compensation for certain senior executives for 2006 through 2013. The 2011 True-Up Plan ended on December 31, 2013 and amounts accrued were paid in May 2014.

Employee benefit expense increase d $5.9 million or 8% compared to 2014 . Employee medical costs totaled $25.0 million , a $3.6 million or 17% increase over the prior year. The Company self-insures a portion of its employee health care coverage and these costs may be volatile. Payroll tax expense increase d $1.1 million over 2014 to $28.6 million . Employee retirement plan costs totaled $20.6 million, up $2.0 million.

Non-personnel operating expense

Non-personnel expense increase d $10.5 million or 3% over the prior year. Mortgage banking expense increase d $7.3 million or 23% primarily due to an $8.7 million increase in amortization of mortgage servicing rights due to higher actual prepayments. Data processing and communications expense increase d $7.2 million or 6% primarily related to increased transaction activity costs. In addition, data processing and communications expense increased over the prior year as risk management and compliance projects were completed. We expect these costs to continue to increase in 2016 as we continue to invest in upgrades in information technology infrastructure and cybersecurity. Professional fees and services expense decrease d $4.3 million or 10% compared to the prior year primarily as risk management and regulatory compliance costs stabilized in 2015 after growing 37% during 2014. Net losses and operating expenses of repossessed assets decrease d $4.6 million compared to the prior year. All other non-personnel operating expenses were up $4.9 million, net.

Fourth Quarter 2015 Operating Expenses

Other operating expense for the fourth quarter of 2015 totaled $232.6 million , a $6.7 million increase over the fourth quarter of 2014 .

Personnel expense increase d $7.4 million over the fourth quarter of 2014 . Regular compensation expense increase d $2.0 million over the fourth quarter of 2014 . Incentive compensation increase d $2.7 million compared to the fourth quarter of 2014 primarily due to a change in estimated share-based compensation expense. Share-based compensation includes grants with vesting criteria based on the Company's earnings per share growth relative to peers over a forward looking three-year performance period. The Company's forecasted earnings per share growth over the performance period increased largely due to common shares repurchased during the third and fourth quarters of 2015. Employee benefit expense increase d $2.7 million compared to the fourth quarter of 2014 primarily due to an increase in employee medical insurance claim expense.

Non-personnel expense decrease d $760 thousand compared to the fourth quarter of 2014 . Premises and equipment expense for the fourth quarter of 2014 included a $4.1 million accrual of costs related the discontinuance of the grocery store branch model and closure of 28 in-store branches. The Company also made a $1.8 million contribution of developed commercial real estate to the BOKF Foundation during the fourth quarter of 2014. Net losses and operating expenses of repossessed assets were $343 thousand for the fourth quarter of 2015 , compared to a net gain of $1.5 million in the fourth quarter of 2014 . All other non-personnel expenses were up $2.5 million over the prior year on a net basis.


35



2014 Operating Expenses

Other operating expense totaled $847.5 million for 2014 , a $6.9 million or 1% increase over 2013 . The Company's investment in risk management and regulatory compliance resulted in a $16.7 million increase, primarily in personnel, professional fees and services and data processing and communications expense for 2014 . In addition, approximately $4.9 million was expensed in the fourth quarter of 2014 related to the announced closure of the grocery store branch network, primarily related to facilities and employee costs.

Personnel expense decrease d $28.3 million or 6% . Regular compensation expense totaled $298.4 million , up $18.9 million primarily due to the investment in higher-costing wealth management, compliance and risk management positions. Incentive compensation expense decrease d $42.2 million , primarily due to the adjustment of amounts payable under the 2011 True-Up Plan. Employee benefit expense decrease d $5.0 million primarily due to employee medical costs.
Non-personnel expense for 2014 was $35.2 million or 10% higher than 2013 . Professional fees and services expense increase d $11.9 million primarily due to increased risk management and regulatory compliance costs. Data processing and communications expense increased $9.3 million primarily related to increased transaction activity costs. Net occupancy and equipment expense increase d $7.5 million , including $4.1 million of branch closure costs. All other non-personnel operating expenses were up $4.9 million, net.
Income Taxes

Income tax expense was $139.4 million or 32.3% of net income before taxes for 2015 , $144.2 million or 32.8% of net income before taxes for 2014 and $163.1 million or 33.8% of net income before taxes for 2013 . Tax expense currently payable totaled $130 million in 2015 , $105 million in 2014 and $146 million in 2013 .

The statute of limitations expired on an uncertain tax position and the Company adjusted its current income tax liability to amounts on filed tax returns for 2014 in 2015 , 2013 in 2014 and 2012 in 2013 . Excluding these adjustments income tax expense would have been $141.4 million or 32.7% of net income before taxes for 2015 , $146.4 million or 33.3% of net income before taxes for 2014 and $164.5 million or 34.1% of net income before taxes for 2013 .

The Company adopted FASB Accounting Standards Update No. 2014-01, Accounting for Investments in Qualified Affordable Housing Projects , on January 1, 2015. This standard allows amortization expense related to qualified affordable housing investment costs to be recognized in provision for income taxes and was retrospectively applied to all periods presented. Prior to 2015, these amounts were recognized in other operating expense, and therefore, for comparative purposes,
$9.3 million and $5.8 million of amortization expense has been reclassified to federal and state income taxes for the years ended December 31, 2014 and 2013, respectively. This reclassification increased the effective tax rate by 150 basis points in 2014 and 80 basis points in 2013. Adoption of this standard did not affect net income.

Net deferred tax liabilities totaled $1.4 million at December 31, 2015 and $7.2 million at December 31, 2014 . We have evaluated the recoverability of our deferred tax assets based on taxes previously paid in net loss carry-back periods and other factors and determined that no valuation allowance was required in 2015 and 2014 .

Unrecognized tax benefits totaled $13 million at December 31, 2015 and December 31, 2014 . BOK Financial operates in numerous jurisdictions, which requires judgment regarding the allocation of income, expense and earnings under various laws and regulations of each of these taxing jurisdictions. Each jurisdiction may audit our tax returns and may take different positions with respect to these allocations.

Income tax expense was $26.2 million or 30.1% of net income before taxes for the fourth quarter of 2015 compared to $30.1 million or 31.5% of net income before taxes for the fourth quarter of 2014 . Income tax expense as a percentage of net income before taxes was lower in the fourth quarter of 2015, primarily due to a decrease in net income before taxes during the fourth quarter. This resulted in a year to date decrease in tax expense that was recognized in the fourth quarter of 2015.

36



Table 7 Selected Quarterly Financial Data
(In thousands, except per share data)
2015
First
Second
Third
Fourth
Interest revenue
$
184,569

$
191,813

$
193,664

$
196,782

Interest expense
16,843

16,082

15,028

15,521

Net interest revenue
167,726

175,731

178,636

181,261

Provision for credit losses

4,000

7,500

22,500

Net interest revenue after provision for credit losses
167,726

171,731

171,136

158,761

Fees and commissions revenue
165,991

172,547

164,657

155,824

Gain (loss) on financial instruments and other assets, net
8,640

(4,272
)
10,536

(398
)
Change in fair value of mortgage servicing rights
(8,522
)
8,010

(11,757
)
7,416

Other-than-temporary impairment losses
(92
)


(1,727
)
Other operating revenue
166,017

176,285

163,436

161,115

Personnel expense
128,548

132,695

129,062

133,182

Other non-personnel expense
91,717

94,418

95,566

99,376

Total other operating expense
220,265

227,113

224,628

232,558

Net income before taxes
113,478

120,903

109,944

87,318

Federal and state income taxes
38,384

40,630

34,128

26,242

Net income
75,094

80,273

75,816

61,076

Net income attributable to non-controlling interests
251

1,043

925

1,475

Net income attributable to shareholders of BOK Financial Corp. shareholders
$
74,843

$
79,230

$
74,891

$
59,601

Earnings per share:
Basic
$
1.08

$
1.15

$
1.09

$
0.89

Diluted
$
1.08

$
1.15

$
1.09

$
0.89

Average shares:
Basic
68,255

68,096

67,668

66,378

Diluted
68,345

68,210

67,762

66,468


37



Table 7 Selected Quarterly Financial Data (continued)
(In thousands, except per share data)
2014
First
Second
Third
Fourth
Interest revenue
$
179,120

$
182,631

$
183,868

$
186,620

Interest expense
16,478

16,534

17,077

16,956

Net interest revenue
162,642

166,097

166,791

169,664

Provision for credit losses




Net interest revenue after provision for credit losses
162,642

166,097

166,791

169,664

Fees and commissions revenue
140,863

164,054

158,547

157,855

Gain (loss) on financial instruments and other assets, net
2,540

8,532

1,143

5,242

Change in fair value of mortgage servicing rights
(4,461
)
(6,444
)
5,281

(10,821
)
Other-than-temporary impairment losses



(373
)
Other operating revenue
138,942

166,142

164,971

151,903

Personnel expense
104,433

123,714

123,043

125,741

Other non-personnel expense
80,671

90,993

98,791

100,136

Total other operating expense
185,104

214,707

221,834

225,877

Net income before taxes
116,480

117,532

109,928

95,690

Federal and state income taxes
39,437

40,803

33,802

30,109

Net income
$
77,043

$
76,729

$
76,126

$
65,581

Net income (loss) attributable to non-controlling interests
453

834

494

1,263

Net income attributable to shareholders of BOK Financial Corp. shareholders
$
76,590

$
75,895

75,632

64,318

Earnings per share:
Basic
$
1.11

$
1.10

$
1.09

$
0.93

Diluted
$
1.11

$
1.10

$
1.09

$
0.93

Average shares:
Basic
68,274

68,360

68,456

68,482

Diluted
68,436

68,511

68,610

68,616


38



Lines of Business

We operate three principal lines of business: Commercial Banking, Consumer Banking and Wealth Management. Commercial Banking includes lending, treasury and cash management services and customer risk management products for small businesses, middle market and larger commercial customers. Commercial banking also includes the TransFund EFT network. Consumer Banking includes retail lending and deposit services, lending and deposit services to small businesses served through our consumer branch network and all mortgage banking activities. Wealth Management provides fiduciary services, private bank services and investment advisory services in all markets. Wealth Management also underwrites state and municipal securities and engages in brokerage and trading activities.

In addition to our lines of business, we have a Funds Management unit. The primary purpose of this unit is to manage our overall liquidity needs and interest rate risk. Each line of business borrows funds from and provides funds to the Funds Management unit as needed to support their operations. Operating results for Funds Management and other include the effect of interest rate risk positions and risk management activities, securities gains and losses including impairment charges, the provision for credit losses in excess of net loans charged off, tax planning strategies and certain executive compensation costs that are not attributed to the lines of business.

We allocate resources and evaluate the performance of our lines of business using the net direct contribution which includes the allocation of funds, actual net credit losses and capital costs. In addition, we measure the performance of our business lines after allocations of certain direct expenses and taxes based on statutory rates.

The cost of funds borrowed from the Funds Management unit by the operating lines of business is transfer priced at rates that approximate market rates for funds with similar duration. Market rates are generally based on the applicable LIBOR or interest rate swap rates, adjusted for prepayment risk. This method of transfer-pricing funds that support assets of the operating lines of business tends to insulate them from interest rate risk.

The value of funds provided by the operating lines of business to the Funds Management unit is also based on rates which approximate wholesale market rates for funds with similar duration and re-pricing characteristics. Market rates are generally based on LIBOR or interest rate swap rates. The funds credit formula applied to deposit products with indeterminate maturities is established based on their re-pricing characteristics reflected in a combination of the short-term LIBOR rate and a moving average of an intermediate term swap rate, with an appropriate spread applied to both. Shorter duration products are weighted towards the short term LIBOR rate and longer duration products are weighted towards the intermediate swap rates. The expected duration ranges from 30 days for certain rate-sensitive deposits to five years.

Economic capital is assigned to the business units by a capital allocation model that reflects management’s assessment of risk. This model assigns capital based upon credit, operating, interest rate and market risk inherent in our business lines and recognizes the diversification benefits among the units. The level of assigned economic capital is a combination of the risk taken by each business line, based on its actual exposures and calibrated to its own loss history where possible. Average invested capital includes economic capital and amounts we have invested in the lines of business.

As shown in Table 8 following, net income attributable to our lines of business increased $21.3 million or 10% over the prior year. The increase in net income attributed to our lines of business was due primarily to a $49.2 million increase in net interest revenue mostly from commercial loan growth and a $40.4 million increase in fees and commission revenue mostly from growth in mortgage banking revenue and fiduciary and asset management fee revenue growth. These increases were partially offset by a $21.4 million increase in personnel expense primarily from regular salaries and incentive compensation expense growth and a $13.6 million increase in non-personnel expense primarily from increased mortgage banking expense. The decrease in net income provided by Funds Management was largely due to a $34.0 million provision for credit losses being recorded in the current year, compared to no provision for credit losses being recorded in the prior year. Lower net interest revenue from our securities portfolio and increased operating expenses primarily due to incentive compensation expense was partially offset by increased gains on sales from our available for sale securities portfolio. Funds Management and other also included $4.9 million that was accrued during 2014 related to the closure of 29 in-store branches during the first quarter of 2015. This accrual was reversed and actual costs related to these closures was attributed to the Consumer Banking segment in 2015.


39



Table 8 Net Income by Line of Business
(In thousands)
Year Ended December 31,
2015
2014
2013
Commercial Banking
$
201,334

$
164,410

$
148,602

Consumer Banking
22,415

33,736

60,766

Wealth Management
16,885

21,215

17,014

Subtotal
240,634

219,361

226,382

Funds Management and other
47,931

73,074

90,227

Total
$
288,565

$
292,435

$
316,609



40



Commercial Banking

Commercial Banking contributed $201.3 million to consolidated net income in 2015 , up $36.9 million or 22% over the prior year. Net interest revenue grew by $51.3 million as the balance of average commercial loans increased $1.7 billion or 16% . Net recoveries were $1.4 million less than in 2014 . Fees and commission revenue increase d $7.0 million or 4% over the prior year primarily due to growth in transaction card and deposit service charges and fees revenue. Other operating expense increase d $3.2 million or 2% compared to 2014 , primarily due to increase d personnel expense.

Table 9 Commercial Banking
(Dollars in thousands)
Year Ended December 31,
2015
2014
2013
Net interest revenue from external sources
$
439,727

$
381,687

$
363,961

Net interest expense from internal sources
(50,678
)
(43,939
)
(51,592
)
Total net interest revenue
389,049

337,748

312,369

Net loans charged off (recovered)
(6,018
)
(7,447
)
(4,372
)
Net interest revenue after net loans charged off
395,067

345,195

316,741

Fees and commissions revenue
178,333

171,332

159,715

Gain (loss) on financial instruments and other assets, net
(811
)
(1,628
)
3,491

Other operating revenue
177,522

169,704

163,206

Personnel expense
113,385

110,637

106,293

Other non-personnel expense
94,009

93,593

86,336

Other operating expense
207,394

204,230

192,629

Net direct contribution
365,195

310,669

287,318

Corporate allocations
35,680

41,585

44,107

Net income before taxes
329,515

269,084

243,211

Federal and state income taxes
128,181

104,674

94,609

Net income
$
201,334

$
164,410

$
148,602

Average assets
$
13,342,585

$
11,384,782

$
10,386,502

Average loans
12,404,065

10,712,559

9,657,793

Average deposits
8,775,048

8,887,809

8,365,466

Average invested capital
1,050,759

946,383

906,717

Return on average assets
1.51
%
1.45
%
1.43
%
Return on invested capital
19.18
%
17.40
%
16.39
%
Efficiency ratio
36.51
%
40.06
%
40.74
%
Net charge-offs (recoveries) to average loans
(0.05
)%
(0.07
)%
(0.05
)%

Net interest revenue increase d $51.3 million or 15% over 2014 . Growth in net interest revenue was due to a $1.7 billion increase in average loan balances, partially offset by decreased loan yields and a $113 million decrease in average deposit balances.

Fees and commissions revenue increase d $7.0 million or 4% over 2014 . Transaction card revenue generated by the TransFund EFT network increase d $4.8 million or 5% due to increased customer transaction volume. Commercial deposit service charges and fees increase d $3.0 million or 8% over the prior year. Other revenue increase d $2.3 million or 10% primarily related to merchant banking activity. Brokerage and trading revenue decrease d $3.1 million or 27% . Loan syndication fees were lower due to the timing and volume of completed deals. Customer hedging revenue decreased primarily related to lower energy prices.


41



Operating expenses increase d $3.2 million or 2% over 2014 . Personnel costs increase d $2.7 million or 2% primarily due to standard annual merit increases. Non-personnel expense was largely unchanged compared to the prior year. Net losses and operating expenses on repossessed assets were $5.5 million lower than the prior year, offset by higher data processing expenses related to increased transaction card activity and increased other expenses primarily related to merchant banking activity. Corporate expense allocations decrease d $5.9 million compared to the prior year.

The average outstanding balance of loans attributed to Commercial Banking grew by $1.7 billion to $12.4 billion for 2015 . See the Loans section of Management’s Discussion and Analysis of Financial Condition following for additional discussion of changes in commercial and commercial real estate loans which are primarily attributed to the Commercial Banking segment. Commercial Banking experienced a net recovery of $6.0 million for 2015 , compared to a net recovery of $7.4 million or 0.07% of average loans attributed to this line of business for 2014 .
Average deposits attributed to Commercial Banking were $8.8 billion for 2015 , a decrease of $113 million or 1% compared to 2014 . Decreased interest-bearing transaction account and time deposit balances, were partially offset by growth in demand deposit balances. Average balances attributed to our commercial & industrial loan customers increase d $495 million or 13% . Average balances attributed to our healthcare customers grew by $82 million or 15% over the prior year. Small business banking customer average balances increase d $118 million or 10% . Average balances attributed to our energy customers decrease d $98 million or 6% . Average balances held by treasury services customers decrease d $768 million or 57% compared to the prior year. Commercial customers continue to maintain large cash reserves primarily due to low yields available on other high quality investment alternatives and to minimize deposit service charges through the earnings credit. The earnings credit is a non-cash method that enables commercial customers to offset deposit service charges based on account balances.


Consumer Banking

Consumer banking services are provided through four primary distribution channels:  traditional branches, the 24-hour ExpressBank call center, Internet banking and mobile banking. Consumer banking also conducts mortgage banking activities through offices located outside of our consumer banking markets, through correspondent loan originators and through Home Direct Mortgage, an online origination channel.

Consumer banking contributed $22.4 million to consolidated net income for 2015 , compared to $33.7 million in the prior year. Increased operating expense and corporate expense allocations and lower net interest revenue, was partially offset by growth in fees and commission revenue. Fees and commission revenue increased primarily due to mortgage banking revenue, partially offset by lower deposit service charges and fees. The change in the fair value of mortgage servicing rights, net of economic hedges, decreased other operating revenue attributed to Consumer Banking by $7.9 million in 2015 and decreased other operating revenue by $3.7 million in 2014 .


42



Table 10 Consumer Banking
(Dollars in thousands)
Year Ended December 31,
2015
2014
2013
Net interest revenue from external sources
$
84,848

$
81,852

$
85,813

Net interest revenue from internal sources
29,824

36,801

39,628

Total net interest revenue
114,672

118,653

125,441

Net loans charged off
6,108

5,477

5,622

Net interest revenue after net loans charged off
108,564

113,176

119,819

Fees and commissions revenue
218,188

196,641

217,269

Gain (loss) on financial instruments and other assets, net
3,437

20,619

(14,653
)
Change in fair value of mortgage servicing rights
(4,853
)
(16,445
)
22,720

Other operating revenue
216,772

200,815

225,336

Personnel expense
105,252

96,681

94,145

Other non-personnel expense
108,530

99,089

94,600

Total other operating expense
213,782

195,770

188,745

Net direct contribution
111,554

118,221

156,410

Corporate allocations
74,868

63,006

56,957

Net income before taxes
36,686

55,215

99,453

Federal and state income taxes
14,271

21,479

38,687

Net income
$
22,415

$
33,736

$
60,766

Average assets
$
6,713,444

$
6,584,157

$
6,520,498

Average loans
1,900,768

1,987,668

2,013,416

Average deposits
6,668,520

6,520,835

6,432,498

Average invested capital
265,775

277,404

293,736

Return on average assets
0.33
%
0.51
%
0.93
%
Return on invested capital
8.43
%
12.16
%
20.69
%
Efficiency ratio
62.54
%
59.14
%
53.22
%
Net charge-offs to average loans
0.32
%
0.28
%
0.28
%

December 31,
2015
2014
2013
Banking locations
152

182

206


Net interest revenue from consumer banking activities decrease d $4.0 million compared to 2014 primarily due to a $4.7 million decrease in revenue related to a deposit advance product that was phased out during the second quarter of 2014. Average loan balances decrease d $87 million or 4% . This impact was partially offset by a $148 million or 2% increase in average deposit balances, which are provided to the Funds Management unit and earn a spread. Net loans charged off by the Consumer Banking unit increase d $631 thousand over 2014 to $6.1 million or 0.32% of average loans. Net consumer banking charge-offs include overdrawn deposit accounts and other consumer loans.

Fees and commissions revenue increase d $21.5 million or 11% compared to the prior year. Mortgage banking revenue was up $25.1 million or 23% over the prior year primarily due to a record level of residential mortgage loans originated for sale. Deposit service charges and fees decrease d $3.6 million or 7% compared to the prior year primarily due to lower overdraft fees.


43



Operating expenses increase d $18.0 million or 9% over 2014 , including $3.0 million of actual facilities costs and $633 thousand of actual personnel costs related to the previously announced closure of 29 grocery store branches. These costs were accrued in 2014 in the Funds Management and Other unit, with the actual costs charged to Consumer Banking as incurred in 2015. Excluding the impact of the branch closure costs, personnel expenses were up $7.9 million or 8% primarily due to increased regular salary and incentive compensation expense. Non-personnel expense increase d $6.5 million or 7%, excluding the impact of the branch closure costs. Mortgage banking costs were up $9.0 million primarily due to increased amortization of mortgage servicing rights due to higher actual prepayments. Corporate expense allocations increase d $11.9 million or 19% over the prior year, primarily due to increased risk management and compliance costs.

Average consumer deposit balances increase d $148 million or 2% over the prior year. Average demand deposit balances increase d $166 million or 12% and average interest-bearing transaction accounts increase d $124 million or 4% . Average savings account balances were up $35 million or 11% . Higher costing time deposit balances decrease d $178 million or 11% .



44



Wealth Management

Wealth Management contributed $16.9 million to consolidated net income in 2015 , compared to $21.2 million in the prior year. Net interest revenue increase d $1.9 million or 4% , primarily due to an increase in average loan balances, partially offset by decreased loan yields. Fees and commissions revenue increase d $11.9 million or 5% over the prior year. Other operating expense increase d $13.8 million or 6% .

Table 11 Wealth Management
(Dollars in thousands)
Year Ended December 31,
2015
2014
2013
Net interest revenue from external sources
$
24,770

$
23,826

$
25,478

Net interest revenue from internal sources
21,524

20,578

20,061

Total net interest revenue
46,294

44,404

45,539

Net loans charged off
(891
)
213

1,275

Net interest revenue after net loans charged off
47,185

44,191

44,264

Fees and commissions revenue
252,490

240,621

212,878

Loss on financial instruments and other assets, net
(1,548
)
(1,576
)
(1,223
)
Other operating revenue
250,942

239,045

211,655

Personnel expense
181,917

171,839

160,517

Other non-personnel expense
48,921

45,210

37,680

Other operating expense
230,838

217,049

198,197

Net direct contribution
67,289

66,187

57,722

Corporate allocations
39,654

31,465

29,876

Net income before taxes
27,635

34,722

27,846

Federal and state income tax
10,750

13,507

10,832

Net income
$
16,885

$
21,215

$
17,014

Average assets
$
4,689,850

$
4,518,511

$
4,556,132

Average loans
1,068,705

985,726

932,229

Average deposits
4,573,853

4,391,434

4,385,553

Average invested capital
225,968

215,089

203,914

Return on average assets
0.41
%
0.51
%
0.40
%
Return on invested capital
8.45
%
10.77
%
8.95
%
Efficiency ratio
77.05
%
76.00
%
76.49
%
Net charge-offs to average loans
(0.08
)%
0.02
%
0.14
%

Our Wealth Management division serves as custodian to or manages assets of customers. Fees are earned commensurate with the level of service provided. We may have sole or joint investment discretion over the assets of the customer or may be fiduciary for the assets, but investment selection authority remains with the customer or a manager outside of the Company. The Wealth Management division also provides safekeeping services for personal and institutional customers including holding of the customer's assets, processing of income and redemptions and other customer recordkeeping and reporting services. We also provide brokerage services for customers who maintain or delegate investment authority and for which BOK Financial does not have custody of the assets.

A summary of assets under management or in custody follows in Table 12 .

45




Table 12 Assets Under Management or In Custody
(Dollars in thousands)
December 31,
2015
2014
2013
Fiduciary assets in custody for which BOKF has sole or joint discretionary authority
$
14,012,350

$
14,644,494

$
12,752,460

Fiduciary assets not in custody for which BOKF has sole or joint discretionary authority
3,384,444

3,324,667

1,728,426

Non-managed fiduciary assets in custody
20,936,844

18,028,716

15,656,206

Total fiduciary assets
38,333,638

35,997,877

30,137,092

Assets held in safekeeping
26,897,107

22,952,394

22,087,207

Brokerage accounts under BOKF administration
5,817,028

5,653,095

4,882,930

Assets under management or in custody
$
71,047,773

$
64,603,366

$
57,107,229


Net interest revenue increase d $1.9 million or 4% compared to the prior year. Average loan balances were up $83 million or 8% . The benefit of this growth was partially offset by lower yields. Average deposit balances, which are sold to the Funds Management unit, increase d $182 million over the prior year. Time deposit balances increase d $178 million and non-interest-bearing demand deposits increase d $106 million , partially offset by a $100 million decrease in interest-bearing transaction balances.

Fees and commissions revenue increase d $11.9 million or 5% over the prior year. Fiduciary and asset management revenue increase d $10.6 million or 9% . A full year of earnings from the acquisitions of Topeka, Kansas-based GTRUST Financial Corporation in the first quarter of 2014 and Houston, Texas-based MBM Advisors in the second quarter of 2014 added $4.0 million in revenue over 2014. The remaining increase was primarily due to the growth in the fair value of fiduciary assets administered by the Company. Brokerage and trading revenue increase d $895 thousand or 1% over the prior year. A $10.1 million or 15% increase in securities trading revenue, was offset by an $8.6 million or 25% decrease in retail brokerage revenue and a $554 thousand or 3% decrease in investment banking fees.

Other operating revenue includes fees earned from state and municipal bond underwriting and financial advisory services, primarily in the Oklahoma and Texas markets. In 2015 , the Wealth Management division participated in 434 underwritings that totaled $9.3 billion. As a participant, the Wealth Management division was responsible for facilitating the sale of approximately $2.9 billion of these underwritings. In 2014 , the Wealth Management division participated in 422 underwritings that totaled approximately $8.6 billion. Our interest in these underwritings totaled approximately $2.5 billion. The Wealth Management division also participated in 16 corporate debt underwritings during 2015 that totaled $11.8 billion. Our interest in these underwritings was $230 million.

Operating expenses increase d $13.8 million or 6% over the prior year. Personnel expenses increase d $10.1 million or 6% . Regular compensation costs increase d $5.4 million primarily due to increased headcount and annual merit increases. Incentive compensation increase d $3.5 million over the prior year. Non-personnel expenses increase d $3.7 million or 8% . Growth in net occupancy and equipment, data processing and communications and other expense, was partially offset by lower deposit insurance expense. Corporate expense allocations were up $8.2 million or 26% , primarily due to increased risk management and compliance costs.

46



Financial Condition
Securities

We maintain a securities portfolio to enhance profitability, manage interest rate risk, provide liquidity and comply with regulatory requirements. Securities are classified as trading, held for investment, or available for sale. See Note 2 to the consolidated financial statements for the composition of the securities portfolio as of December 31, 2015 , December 31, 2014 and December 31, 2013 .

Table 13 Securities
(In thousands)
December 31,
2015
2014
2013
Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
Amortized
Cost
Fair
Value
Trading:
U.S. Government agency debentures
$
61,366

$
61,295

$
85,154

$
85,092

$
34,043

$
34,120

U.S. government agency residential mortgage-backed securities
10,972

10,989

30,930

31,199

20,888

21,011

Municipal and other tax-exempt securities
31,691

31,901

38,933

38,951

27,532

27,350

Other trading securities
18,235

18,219

33,496

33,458

9,142

9,135

Total trading securities
$
122,264

$
122,404

$
188,513

$
188,700

$
91,605

$
91,616

Investment:
Municipal and other tax-exempt securities
$
365,258

$
368,910

$
405,090

408,344

$
440,187

$
439,870

U.S. government agency residential mortgage-backed securities 1
26,833

27,874

35,750

37,463

50,182

51,864

Other debt securities
205,745

232,375

211,520

227,819

187,509

195,393

Total investment securities
$
597,836

$
629,159

$
652,360

$
673,626

$
677,878

$
687,127

Available for sale:
U.S. Treasury securities
$
1,000

$
995

$
1,005

$
1,005

$
1,042

$
1,042

Municipal and other tax-exempt securities
56,681

56,817

63,018

63,557

73,232

73,775

Residential mortgage-backed securities:
U.S. government agencies
5,861,096

5,898,351

6,549,304

6,646,884

7,720,189

7,716,010

Private issue
128,111

139,118

154,360

165,957

214,181

221,099

Total residential mortgage-backed securities
5,989,207

6,037,469

6,703,664

6,812,841

7,934,370

7,937,109

Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,919,044

2,905,796

2,064,091

2,048,609

2,100,146

2,055,804

Other debt securities
4,400

4,151

9,438

9,212

35,061

35,241

Perpetual preferred stock
17,171

19,672

22,171

24,277

22,171

22,863

Equity securities and mutual funds
17,121

17,833

18,603

19,444

19,069

21,328

Total available for sale securities
$
9,004,624

$
9,042,733

$
8,881,990

$
8,978,945

$
10,185,091

$
10,147,162

Fair value option securities:
U.S. government agency residential mortgage-backed securities
$
446,277

$
444,217

$
309,973

$
311,597

$
165,809

$
157,431

Other securities




9,485

9,694

Total fair value option securities
$
446,277

$
444,217

$
309,973

$
311,597

$
175,294

$
167,125

1
Includes net realized gain of $112 thousand at December 31, 2015 , $615 thousand at December 31, 2014 and $1.8 million at December 31, 2013 remaining in Accumulated Other Comprehensive Income in the Consolidated Balance Sheets related to securities transferred from the available for sale securities portfolio to the investment portfolio in 2011. See Note 2 to the Consolidated Financial Statements for additional discussion.


47



In addition to the above, restricted equity securities include stock we are required to hold as members of the Federal Reserve system and the Federal Home Loan Banks ("FHLB"). Restricted equity securities are carried at cost as these securities do not have a readily determined fair value because ownership of these shares are restricted and they lack a market. Federal Reserve Bank stock totaled $36 million at December 31, 2015 , $35 million at December 31, 2014 and $34 million at December 31, 2013 . Holdings of FHLB stock totaled $237 million at December 31, 2015 , $106 million at December 31, 2014 and $51 million at December 31, 2013 . Requirements to hold FHLB stock are directly related to borrowings from the FHLB.

At December 31, 2015 , the carrying value of investment (held-to-maturity) securities was $598 million and the fair value was $629 million . Investment securities consist primarily of intermediate and long-term, fixed rate Oklahoma and Texas municipal bonds, taxable Texas school construction bonds and residential mortgage-backed securities issued by U.S. government agencies. The investment security portfolio is diversified among issuers. The largest obligation of any single issuer is $30 million. Substantially all of these bonds are general obligations of the issuers. Approximately $104 million of the Texas school construction bonds are also guaranteed by the Texas Permanent School Fund Guarantee Program supervised by the State Board of Education for the State of Texas.

Available for sale securities, which may be sold prior to maturity, are carried at fair value. Unrealized gains or losses, net of deferred taxes, are recorded as accumulated other comprehensive income in shareholders’ equity. The amortized cost of available for sale securities totaled $9.0 billion at December 31, 2015 , an increase of $123 million over December 31, 2014 . Available for sale securities consist primarily of U.S. government agency residential mortgage-backed securities and U.S. government agency commercial mortgage-backed securities. Commercial mortgage-backed securities have prepayment penalties similar to commercial loans. At December 31, 2015 , residential mortgage-backed securities represented 67% of total available for sale securities. The increase in amortized cost during the year was primarily due to an increase in commercial mortgage-backed securites guaranteed by U.S. government agencies, partially offset by a decrease in U.S. government agency residential mortgage-backed securities.

A primary risk of holding residential mortgage-backed securities comes from extension during periods of rising interest rates or prepayment during periods of falling interest rates. We evaluate this risk through extensive modeling of risk both before making an investment and throughout the life of the security. Our best estimate of the duration of the combined investment and available for sale securities portfolios at December 31, 2015 is 3.25 years. Management estimates the combined portfolios' duration extends to 3.7 years assuming an immediate 200 basis point upward shock. The estimated combined portfolios' duration contracts to 3.0 years assuming a 50 basis point decline in the current low rate environment.

Residential mortgage-backed securities also have credit risk from delinquency or default of the underlying loans. We mitigate this risk by primarily investing in securities issued by U.S. government agencies. Principal and interest payments on the underlying loans are fully guaranteed. At December 31, 2015 , approximately $5.9 billion of the amortized cost of the Company’s residential mortgage-backed securities were issued by U.S. government agencies. The fair value of these residential mortgage-backed securities totaled $5.9 billion at December 31, 2015 .

We also hold amortized cost of $128 million in residential mortgage-backed securities privately issued by publicly-owned financial institutions. The amortized cost of these securities decrease d $26 million from December 31, 2014 . The fair value of our portfolio of privately issued residential mortgage-backed securities totaled $139 million at December 31, 2015 .

The amortized cost of our portfolio of privately issued residential mortgage-backed securities included $72 million of Jumbo-A residential mortgage loans and $56 million of Alt-A residential mortgage loans. Jumbo-A residential mortgage loans generally meet government underwriting standards, but have loan balances that exceed agency maximums. Alt-A mortgage loans generally do not have sufficient documentation to meet government agency underwriting standards. Approximately 91% of our Alt-A mortgage-backed securities represent pools of fixed rate residential mortgage loans. None of the adjustable rate mortgages are payment option adjustable rate mortgages (“ARMs”). Approximately 30% of our Jumbo-A residential mortgage-backed securities represent pools of fixed rate residential mortgage loans and none of the adjustable rate mortgages are payment option ARMs.

The aggregate gross amount of unrealized losses on available for sale securities totaled $42 million at December 31, 2015 , an increase of $8.9 million compared to December 31, 2014 . On a quarterly basis, we perform separate evaluations on debt and equity securities to determine if the unrealized losses are temporary as more fully described in Note 2 of the Consolidated Financial Statements. Other-than-temporary impairment charges of $1.8 million were recognized in earnings in 2015 .


48



Certain residential mortgage-backed securities issued by U.S. government agencies and included in fair value option securities on the Consolidated Balance Sheets, have been segregated and designated as economic hedges of changes in the fair value of our mortgage servicing rights. We have elected to carry these securities at fair value with changes in fair value recognized in current period income. These securities are held with the intent that gains or losses will offset changes in the fair value of mortgage servicing rights and related derivative contracts.
Bank-Owned Life Insurance

We have approximately $303 million of bank-owned life insurance at December 31, 2015 . This investment is expected to provide a long-term source of earnings to support existing employee benefit programs. Approximately $272 million is held in separate accounts. Our separate account holdings are invested in diversified portfolios of investment-grade fixed income securities and cash equivalents, including U.S. Treasury and Agency securities, residential mortgage-backed securities, corporate debt, asset-backed and commercial mortgage-backed securities. The portfolios are managed by unaffiliated professional managers within parameters established in the portfolio’s investment guidelines. The cash surrender value of certain life insurance policies is further supported by a stable value wrap, which protects against changes in the fair value of the investments. At December 31, 2015 , the fair value of investments held in separate accounts was approximately $283 million. As the underlying fair value of the investments held in a separate account at December 31, 2015 exceeded the net book value of the investments, no cash surrender value was supported by the stable value wrap. The stable value wrap is provided by a domestic financial institution. The remaining cash surrender value of $31 million primarily represents the cash surrender value of policies held in general accounts and other amounts due from various insurance companies.

49



Loans

The aggregate loan portfolio before allowance for loan losses totaled $15.9 billion at December 31, 2015 , growing $1.7 billion or 12% over December 31, 2014 . Commercial loans have grown by $1.2 billion or 13% due largely to growth in healthcare, services and energy sector loans. Commercial real estate loans increase d $531 million or 19% primarily due to growth in loans secured by office buildings, industrial facilities and retail facilities. Residential mortgage loans decrease d $73 million and personal loans increase d $118 million .

Table 14 Loans
(In thousands)
December 31,
2015
2014
2013
2012
2011
Commercial:
Energy
$
3,097,328

$
2,860,428

$
2,351,760

$
2,460,659

$
2,005,041

Services
2,784,276

2,391,530

2,282,210

2,164,186

1,761,538

Healthcare
1,883,380

1,454,969

1,274,246

1,081,406

978,160

Wholesale/retail
1,422,064

1,440,015

1,201,364

1,106,439

967,426

Manufacturing
556,729

532,594

391,751

348,484

336,733

Other commercial and industrial
508,754

416,134

441,890

480,738

506,172

Total commercial
10,252,531

9,095,670

7,943,221

7,641,912

6,555,070

Commercial real estate:





Retail
796,499

666,889

586,047

522,786

509,402

Multifamily
751,085

704,298

576,502

402,896

369,028

Office
637,707

415,544

411,499

427,872

405,923

Industrial
563,169

428,817

243,877

245,994

278,186

Residential construction and land development
160,426

143,591

206,258

253,093

342,054

Other commercial real estate
350,147

369,011

391,170

376,358

386,710

Total commercial real estate
3,259,033

2,728,150

2,415,353

2,228,999

2,291,303

Residential mortgage:





Permanent mortgage
945,336

969,951

1,062,744

1,123,965

1,157,133

Permanent mortgages guaranteed by U.S. government agencies
196,937

205,950

181,598

160,444

184,973

Home equity
734,620

773,611

807,684

760,631

632,421

Total residential mortgage
1,876,893

1,949,512

2,052,026

2,045,040

1,974,527

Personal
552,697

434,705

381,664

395,505

448,843

Total
$
15,941,154

$
14,208,037

$
12,792,264

$
12,311,456

$
11,269,743









50



Commercial

Commercial loans represent loans for working capital, facilities acquisition or expansion, purchases of equipment and other needs of commercial customers primarily located within our geographical footprint. Commercial loans are underwritten individually and represent on-going relationships based on a thorough knowledge of the customer, the customer’s industry and market. While commercial loans are generally secured by the customer’s assets including real property, inventory, accounts receivable, operating equipment, interests in mineral rights and other property and may also include personal guarantees of the owners and related parties, the primary source of repayment of the loans is the on-going cash flow from operations of the customer’s business. Inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with commercial lending policies.

Healthcare sector loans increase d $428 million or 29% over December 31, 2014 . Service sector loans increase d $393 million or 16% and energy sector loans increase d $237 million or 8% . Other commercial and industrial sector loans increase d $93 million or 22% and manufacturing sector loans increase d $24 million or 5% . This growth was partially offset by an $18 million or 1% decrease in wholesale/retail sector loans.

Table 15 presents our commercial loan portfolio distributed primarily by collateral location. Loans for which the collateral location is less relevant, such as unsecured loans and reserve-based energy loans, are distributed by the borrower’s primary operating location.

Table 15 Commercial Loans by Collateral Location
(In thousands)
Oklahoma
Texas
New
Mexico
Arkansas
Colorado
Arizona
Kansas/
Missouri
Other
Total
Energy
$
819,338

$
1,406,754

$
61,642

$
5,847

$
314,017

$
10,391

$
94,863

$
384,476

$
3,097,328

Services
813,738

852,839

199,180

8,380

268,045

159,800

161,150

321,144

2,784,276

Healthcare
269,662

353,761

124,467

84,915

137,275

102,752

225,254

585,294

1,883,380

Wholesale/retail
369,582

569,827

37,053

37,089

62,918

51,569

29,807

264,219

1,422,064

Manufacturing
149,619

199,411

2,848

9,715

50,008

43,365

37,083

64,680

556,729

Other commercial and industrial
80,588

148,567

4,936

79,758

36,232

29,287

74,725

54,661

508,754

Total commercial loans
$
2,502,527

$
3,531,159

$
430,126

$
225,704

$
868,495

$
397,164

$
622,882

$
1,674,474

$
10,252,531

The majority of our commercial portfolio is located within our geographic footprint. The Other category includes two primary locations, California and Louisiana, which represent $242 million or 2.4% of the commercial portfolio and $167 million or 1.6% of the commercial portfolio, respectively at December 31, 2015 . All other states individually represent less than one percent of total commercial loans.
Supporting the energy industry with loans to producers and other energy-related entities has been a hallmark of the Company since its founding and represents a large portion of our commercial loan portfolio. In addition, energy production and related industries have a significant impact on the economy in our primary markets. Loans collateralized by oil and gas properties are subject to a semi-annual engineering review by our internal staff of petroleum engineers. This review is utilized as the basis for developing the expected cash flows supporting the loan amount. The projected cash flows are discounted according to risk characteristics of the underlying oil and gas properties. Loans are evaluated to demonstrate with reasonable certainty that crude oil, natural gas and natural gas liquids can be recovered from known oil and gas reservoirs under existing economic and operating conditions at current pricing levels and with existing conventional equipment and operating methods and costs. As part of our evaluation of credit quality, we analyze rigorous stress tests over a range of commodity prices and take proactive steps to mitigate risk when appropriate.



51



Energy loans totaled $3.1 billion or 19% of total loans at December 31, 2015 . Unfunded energy loan commitments decrease d by $502 million during the year to $2.4 billion at December 31, 2015 . Approximately $2.5 billion or 82% of energy loans were to oil and gas producers, an increase of $83 million over December 31, 2014 . The majority of this portfolio is first lien, senior secured, reserve-based lending, which we believe is the lowest risk form of energy lending. The Company has largely avoided higher-risk energy lending areas including second-lien financing, mezzanine debt and subordinated debt. In addition, the Company has no direct exposure to energy company equity or to borrowers with deepwater offshore exposure. Approximately 62% of the committed production loans are secured by properties primarily producing oil and 38% of the committed production loans are secured by properties primarily producing natural gas. Loans to borrowers that provide services to the energy industry totaled $279 million or 9% of energy loans, an increase of $57 million during 2015 . Loans to borrowers in the midstream sector of the industry totaled $193 million or 5% of energy loans, an increase of $92 million over the prior year. Loans to other energy borrowers, including those engaged in wholesale or retail energy sales totaled $86 million or 4% of energy loans, an increase of $4.7 million over the prior year.

The services sector of the loan portfolio totaled $2.8 billion or 17% of total loans and consists of a large number of loans to a variety of businesses, including governmental, financial & insurance, religious and not-for-profit, educational and professional/technical services. Approximately $1.2 billion of the services category is made up of loans with individual balances of less than $10 million. Service sector loans are generally secured by the assets of the borrower with repayment coming from the cash flows of ongoing operations of the customer’s business.

We participate in shared national credits when appropriate to obtain or maintain business relationships with local customers. Shared national credits are defined by banking regulators as credits of more than $20 million and with three or more non-affiliated banks as participants. At December 31, 2015 , the outstanding principal balance of these loans totaled $3.4 billion. Approximately 83% of these loans are to borrowers with local market relationships. We serve as the agent lender in approximately 16% of our shared national credits, based on dollars committed. We hold shared credits to the same standard of analysis and perform the same level of review as internally originated credits. Our lending policies generally avoid loans in which we do not have the opportunity to maintain or achieve other business relationships with the customer. In addition to management’s quarterly assessment of credit risk, banking regulators annually review a sample of shared national credits for proper risk grading.

Commercial Real Estate

Commercial real estate represents loans for the construction of buildings or other improvements to real estate and property held by borrowers for investment purposes. The majority of commercial real estate loans are secured by properties within our geographic footprint, with the larger concentrations in Texas and Oklahoma, 30% and 13% at December 31, 2015 . We require collateral values in excess of the loan amounts, demonstrated cash flows in excess of expected debt service requirements, equity investment in the project and a portion of the project already sold, leased or permanent financing already secured. The expected cash flows from all significant new or renewed income producing property commitments are stress tested to reflect the risks in varying interest rates, vacancy rates and rental rates. As with commercial loans, inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with applicable lending policies.

Commercial real estate loans totaled $3.3 billion or 20% of the loan portfolio at December 31, 2015 . The outstanding balance of commercial real estate loans increase d $531 million over 2014 , primarily due to growth in loans secured by office buildings, industrial facilities and retail facilities. The commercial real estate loan balance as a percentage of our total loan portfolio has ranged from 18% to 20% over the past five years. The commercial real estate segment of our loan portfolio distributed by collateral location follows in Table 16 .


52



Table 16 Commercial Real Estate Loans by Collateral Location
(In thousands)
Oklahoma
Texas
New
Mexico
Arkansas
Colorado
Arizona
Kansas/
Missouri
Other
Total
Retail
86,217

289,217

91,184

3,831

60,135

39,873

8,723

217,319

796,499

Multifamily
90,035

255,815

32,056

18,646

73,435

72,157

55,324

153,617

751,085

Office
96,444

174,054

58,644

1,862

29,455

48,727

69,215

159,306

637,707

Industrial
54,231

162,871

37,003

219

5,778

14,942

43,224

244,901

563,169

Residential construction and land development
21,747

36,843

16,366

5,686

40,024

529

6,093

33,138

160,426

Other commercial real estate
68,295

68,502

15,201

9,844

23,252

27,393

3,392

134,268

350,147

Total commercial real estate loans
$
416,969

$
987,302

$
250,454

$
40,088

$
232,079

$
203,621

$
185,971

$
942,549

$
3,259,033

The Other category includes California with $129 million or 3.9% of total commercial real estate loans, Florida with $87 million or 2.7% of total commercial real estate loans, Mississippi with $83 million or 2.6% of total commercial real estate loans and Utah with $64 million or 2.0% of total commercial real estate loans. All other locations included in Other individually represent less than 2.0% of the total commercial real estate loan population.

Commercial real estate in Houston, Texas, our most energy exposed market, was $320 million or 2% of the loan portfolio at December 31, 2015. Approximately 51% of our commercial real estate exposure in Houston was retail, 19% to loans secured by industrial facilities, 9% to multifamily residential properties, 9% to office buildings, with the balance in secured by other commercial real estate. We have no office exposure in downtown Houston.

Residential Mortgage and Personal

Residential mortgage loans provide funds for our customers to purchase or refinance their primary residence or to borrow against the equity in their home. Residential mortgage loans are secured by a first or second-mortgage on the customer’s primary residence. Personal loans consist primarily of loans to wealth management clients secured by the cash surrender value of insurance policies and marketable securities. It also includes direct loans secured by and for the purchase of automobiles, recreational and marine equipment as well as unsecured loans. Residential mortgage and personal loans are made in accordance with underwriting policies we believe to be conservative and are fully documented. Credit scoring is assessed based on significant credit characteristics including credit history, residential and employment stability.

Residential mortgage loans totaled $1.9 billion , a $73 million or 4% decrease compared to December 31, 2014 . In general, we sell the majority of our fixed rate loan originations that conform to U.S. government agency standards in the secondary market and retain the majority of our non-conforming and adjustable-rate mortgage loans. We have no concentration in sub-prime residential mortgage loans. Our mortgage loan portfolio does not include payment option adjustable rate mortgage loans or adjustable rate mortgage loans with initial rates that are below market. Collateral for 98% of our residential mortgage portfolio is located within our geographic footprint.

The majority of our permanent mortgage loan portfolio is primarily composed of various non-conforming mortgage programs to support customer relationships including jumbo mortgage loans, non-builder construction loans and special loan programs for high net worth individuals or certain professionals. Jumbo loans may be fixed or variable rate and are fully amortizing. The size of jumbo loans exceed maximums set under government sponsored entity standards, but otherwise generally conform to those standards. These loans generally require a minimum FICO score of 720 and a maximum debt-to-income ratio (“DTI”) of 38%. Loan-to-value ratios (“LTV”) are tiered from 60% to 100%, depending on the market. Special mortgage programs include fixed and variable rate fully amortizing loans tailored to the needs of certain healthcare professionals. Variable rate loans are fully indexed at origination and may have fixed rates for three to ten years, then adjust annually thereafter.


53



At December 31, 2015 , $197 million of permanent residential mortgage loans are guaranteed by U.S. government agencies. We have minimal credit exposure on loans guaranteed by the agencies. This amount includes residential mortgage loans previously sold into GNMA mortgage pools that are eligible to be repurchased. We may repurchase these loans when certain defined delinquency criteria are met. Because of this repurchase right, the Company is deemed to have regained effective control over these loans and must include them in the Consolidated Balance Sheets. Permanent residential mortgage loans guaranteed by U.S. government agencies decrease d $9.0 million or 4% compared to December 31, 2014 .

Home equity loans totaled $735 million at December 31, 2015 , a $39 million or 5% decrease compared to December 31, 2014 . Our home equity portfolio is primarily composed of first-lien, fully amortizing home equity loans. Home equity loans generally require a minimum FICO score of 700 and a maximum DTI of 40%. The maximum loan amount available for our home equity loan products is generally $400 thousand. Revolving loans have a 5 year revolving period followed by 15 year term of amortizing repayments. Interest-only home equity loans may not be extended for any additional revolving time. All other home equity loans may be extended at management's discretion for an additional 5 year revolving term subject to an update of certain credit information. A summary of our home equity loan portfolio at December 31, 2015 by lien position and amortizing status follows in Table 17 .


Table 17 Home Equity Loans
(In thousands)
Revolving
Amortizing
Total
First lien
$
40,012

$
459,116

$
499,128

Junior lien
82,948

152,544

235,492

Total home equity
$
122,960

$
611,660

$
734,620


The distribution of residential mortgage and personal loans at December 31, 2015 is presented in Table 18 . Residential mortgage loans are distributed by collateral location. Personal loans are generally distributed by borrower location.

Table 18 Residential Mortgage and Personal Loans by Collateral Location
(In thousands)
Oklahoma
Texas
New Mexico
Arkansas
Colorado
Arizona
Kansas/Missouri
Other
Total
Residential mortgage:
Permanent mortgage
$
196,724

$
389,713

$
40,319

$
15,376

$
135,174

$
93,580

$
50,416

$
24,034

$
945,336

Permanent mortgages guaranteed by U.S. government agencies
63,794

24,065

66,054

5,160

7,853

1,496

12,855

15,660

196,937

Home equity
430,904

132,197

115,824

5,337

32,257

9,794

7,771

536

734,620

Total residential mortgage
$
691,422

$
545,975

$
222,197

$
25,873

$
175,284

$
104,870

$
71,042

$
40,230

$
1,876,893

Personal
$
250,017

$
205,384

$
11,597

$
819

$
23,501

$
30,782

$
26,931

$
3,666

$
552,697


The Company secondarily evaluates loan portfolio performance based on the primary geographical market managing the loan. Loans attributed to a geographical market may not represent the location of the borrower or the collateral. All permanent mortgage loans serviced by our mortgage banking unit and held for investment by the Bank are centrally managed by the Bank of Oklahoma.


54



Table 19 Loans Managed by Primary Geographical Market
(In thousands)
December 31,
2015
2014
2013
2012
2011
Bank of Oklahoma:
Commercial
$
3,782,687

$
3,142,689

$
2,902,140

$
3,089,686

$
2,826,649

Commercial real estate
739,829

603,610

602,010

580,694

607,030

Residential mortgage
1,409,114

1,467,096

1,524,212

1,488,486

1,411,560

Personal
255,387

206,115

192,283

220,096

235,909

Total Bank of Oklahoma
6,187,017

5,419,510

5,220,645

5,378,962

5,081,148

Bank of Texas:





Commercial
3,908,425

3,549,128

3,052,274

2,726,925

2,249,888

Commercial real estate
1,204,202

1,027,817

816,574

771,796

830,642

Residential mortgage
219,126

235,948

260,544

275,408

268,053

Personal
203,496

154,363

131,297

116,252

126,570

Total Bank of Texas
5,535,249

4,967,256

4,260,689

3,890,381

3,475,153

Bank of Albuquerque:





Commercial
375,839

383,439

342,336

265,830

258,668

Commercial real estate
313,422

296,358

308,829

326,135

303,500

Residential mortgage
120,507

127,999

133,900

130,337

104,695

Personal
11,557

10,899

13,842

15,456

19,369

Total Bank of Albuquerque
821,325

818,695

798,907

737,758

686,232

Bank of Arkansas:





Commercial
92,359

95,510

81,556

62,049

76,199

Commercial real estate
69,320

88,301

78,264

90,821

136,170

Residential mortgage
8,169

7,261

7,922

13,046

15,772

Personal
819

5,169

8,023

15,421

35,911

Total Bank of Arkansas
170,667

196,241

175,765

181,337

264,052

Colorado State Bank & Trust:





Commercial
987,076

977,961

735,626

776,610

544,020

Commercial real estate
223,946

194,553

190,355

173,327

156,013

Residential mortgage
53,782

57,119

62,821

59,363

64,627

Personal
23,384

27,918

22,686

19,333

21,598

Total Colorado State Bank & Trust
1,288,188

1,257,551

1,011,488

1,028,633

786,258

Bank of Arizona:





Commercial
606,733

547,524

417,702

313,296

271,914

Commercial real estate
507,523

355,140

257,477

201,760

198,160

Residential mortgage
44,047

35,872

47,111

57,803

89,315

Personal
31,060

12,883

7,887

4,686

5,633

Total Bank of Arizona
1,189,363

951,419

730,177

577,545

565,022

Bank of Kansas City:





Commercial
499,412

399,419

411,587

407,516

327,732

Commercial real estate
200,791

162,371

161,844

84,466

59,788

Residential mortgage
22,148

18,217

15,516

20,597

20,505

Personal
26,994

17,358

5,646

4,261

3,853

Total Bank of Kansas City
749,345

597,365

594,593

516,840

411,878

Total BOK Financial loans
$
15,941,154

$
14,208,037

$
12,792,264

$
12,311,456

$
11,269,743



55



Table 20 Loan Maturity and Interest Rate Sensitivity at December 31, 2015
(In thousands)
Remaining Maturities of Selected Loans
Total
Within 1 Year
1-5 Years
After 5 Years
Loan maturity:
Commercial
$
10,252,531

$
745,356

$
5,953,627

$
3,553,548

Commercial real estate
3,259,033

296,768

1,932,993

1,029,272

Total
$
13,511,564

$
1,042,124

$
7,886,620

$
4,582,820

Interest rate sensitivity for selected loans with:
Predetermined interest rates
$
2,506,596

$
8,435

$
575,187

$
1,922,974

Floating or adjustable interest rates
11,004,968

1,033,689

7,311,433

2,659,846

Total
$
13,511,564

$
1,042,124

$
7,886,620

$
4,582,820


Loan Commitments

We enter into certain off-balance sheet arrangements in the normal course of business. These arrangements included unfunded loan commitments which totaled $8.5 billion and standby letters of credit which totaled $508 million at December 31, 2015 . Loan commitments may be unconditional obligations to provide financing or conditional obligations that depend on the borrower’s financial condition, collateral value or other factors. Standby letters of credit are unconditional commitments to guarantee the performance of our customer to a third party. Since some of these commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Approximately $166 thousand of the outstanding standby letters of credit were issued on behalf of customers whose loans are nonperforming at December 31, 2015 .

Table 21 Off-Balance Sheet Credit Commitments
(In thousands)
December 31,
2015
2014
2013
2012
2011
Loan commitments
$
8,455,037

$
8,328,416

$
7,096,373

$
6,636,587

$
5,193,545

Standby letters of credit
507,988

447,599

444,248

466,477

534,565

Mortgage loans sold with recourse
155,489

179,822

191,299

226,922

289,021


As more fully described in Note 7 to the Consolidated Financial Statements, we have off-balance sheet commitments related to certain residential mortgage loans originated under community development loan programs that were sold to a U.S. government agency with full recourse. These mortgage loans were underwritten to standards approved by the agencies, including full documentation and originated under programs available only for owner-occupied properties. The Company no longer sells residential mortgage loans with recourse other than obligations under standard representations and warranties. We are obligated to repurchase these loans for the life of these loans in the event of foreclosure for the unpaid principal and interest at the time of foreclosure. At December 31, 2015 , the principal balance of residential mortgage loans sold subject to recourse obligations totaled $155 million , down from $180 million at December 31, 2014 . Substantially all of these loans are to borrowers in our primary markets including $102 million to borrowers in Oklahoma, $16 million to borrowers in Arkansas and $12 million to borrowers in New Mexico. At December 31, 2015 , approximately 3% of these loans are nonperforming and 6% were past due 30 to 89 days. A separate accrual for credit risk of $4.6 million is available to absorb losses on these loans.

We also have an off-balance sheet obligation to repurchase residential mortgage loans sold to government sponsored entities through our mortgage banking activities due to standard representations and warranties made under contractual agreements as described further in Note 7 to the Consolidated Financial Statements. For the period from 2010 through 2015 , approximately 21% of repurchase requests have currently resulted in actual repurchases or indemnification by the Company. The accrual for credit losses related to potential loan repurchases under representations and warranties totaled $3.4 million at December 31, 2015 .

56



Customer Derivative Programs
We offer programs that permit our customers to hedge various risks, including fluctuations in energy, cattle and other agricultural product prices, interest rates and foreign exchange rates. Each of these programs work essentially the same way. Derivative contracts are executed between the customers and the Company. Offsetting contracts are executed between the Company and selected counterparties or exchanges to minimize market risk to us from changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to the customer contracts, except for a fixed pricing spread or a fee paid to us as compensation for administrative costs, credit risk and profit.

The customer derivative programs create credit risk for potential amounts due to the Company from our customers and from the counterparties. Customer credit risk is monitored through existing credit policies and procedures. The effects of changes in commodity prices, interest rates or foreign exchange rates are evaluated across a range of possible options to determine the maximum exposure we are willing to have individually to any customer. Customers may also be required to provide cash margin or other collateral in conjunction with our credit agreements to further limit our credit risk.

Counterparty credit risk is evaluated through existing policies and procedures. This evaluation considers the total relationship between BOK Financial and each of the counterparties. Individual limits are established by management, approved by Credit Administration and reviewed by the Asset / Liability Committee. Margin collateral is required if the exposure between the Company and any counterparty exceeds established limits. Based on declines in the counterparties’ credit ratings, these limits may be reduced and additional margin collateral may be required.

A deterioration of the credit standing of one or more of the customers or counter-parties to these contracts may result in BOK Financial recognizing a loss as the fair value of the affected contracts may no longer move in tandem with the offsetting contracts. This occurs if the credit standing of the customer or counterparty deteriorated such that either the fair value of underlying collateral no longer supports the contract or the customer or counterparty’s ability to provide margin collateral was impaired. Credit losses on customer derivatives reduce brokerage and trading revenue in the Consolidated Statement of Earnings.

Derivative contracts are carried at fair value. At December 31, 2015 , the net fair values of derivative contracts, before consideration of cash margin, reported as assets under these programs totaled $611 million compared to $433 million at December 31, 2014 . Derivative contracts carried as assets include foreign exchange contracts with fair values of $499 million , energy contracts with fair values of $60 million , interest rate swaps primarily sold to loan customers with fair values of $32 million , to-be-announced residential mortgage-backed securities with fair values of $15 million and equity option contracts with fair values of $3.8 million . Before consideration of cash margin paid to counterparties, the aggregate net fair values of derivative contracts held under these programs reported as liabilities totaled $606 million .

At December 31, 2015 , total derivative assets were reduced by $25 million of cash collateral received from counterparties and total derivative liabilities were reduced by $25 million of cash collateral paid to counterparties related to instruments executed with the same counterparty under a master netting agreement.

A table showing the notional and fair value of derivative assets and liabilities on both a gross and net basis is presented in Note 3 to the Consolidated Financial Statements.

The fair value of derivative contracts reported as assets under these programs, net of cash margin held by the Company, by category of debtor at December 31, 2015 follows in Table 22 .

Table 22 Fair Value of Derivative Contracts
(In thousands)
Customers
$
316,048

Banks and other financial institutions
231,609

Exchanges
38,530

Fair value of customer hedge asset derivative contracts, net
$
586,187

The largest exposure to a single counterparty was to an exchange for energy derivative contracts which totaled $34 million at December 31, 2015 .


57



Our customer derivative program also introduces liquidity and capital risk. We are required to provide cash margin to certain counterparties when the net negative fair value of the contracts exceeds established limits. Also, changes in commodity prices affect the amount of regulatory capital we are required to hold as support for the fair value of our derivative assets. These risks are modeled as part of the management of these programs. Based on current prices, a decrease in market prices equivalent to $20.79 per barrel of oil would increase the fair value of derivative assets by $196 thousand. An increase in prices equivalent to $57.96 per barrel of oil would increase the fair value of derivative assets by $23 million. Liquidity requirements of this program are also affected by our credit rating. A decrease in credit rating to below investment grade would increase our obligation to post cash margin on existing contracts by approximately $20 million . The fair value of our to-be-announced residential mortgage-backed securities and interest rate swap derivative contracts is affected by changes in interest rates. Based on our assessment as of December 31, 2015 , changes in interest rates would not materially impact regulatory capital or liquidity needed to support this portion of our customer derivative program.
Summary of Loan Loss Experience

We maintain an allowance for loan losses and an accrual for off-balance sheet credit risk. At December 31, 2015 , the combined allowance for loan losses and accrual for off-balance sheet risk totaled $227 million or 1.43% of outstanding loans and 181% of nonaccruing loans, excluding loans guaranteed by U.S. Government agencies. The allowance for loan losses was $226 million and the accrual for off-balance sheet credit risk was $1.7 million . At December 31, 2014 , the combined allowance for credit losses was $190 million or 1.34% of outstanding loans and 247% of nonaccruing loans, excluding loans guaranteed by U.S. Government agencies. The allowance for loan losses was $189 million and the accrual for off-balance sheet credit risk was $1.2 million .

The provision for credit losses is the amount necessary to maintain the allowance for loan losses and an accrual for off-balance sheet credit risk at an amount determined by management to be appropriate based on its evaluation. The provision includes the combined charge or credit to expense for both the allowance for loan losses and the accrual for off-balance sheet credit risk. All losses incurred from lending activities will ultimately be reflected in charge-offs against the allowance for loan losses following funds advanced against outstanding commitments. After evaluating all credit factors, the Company determined that a $34.0 million provision for credit losses was necessary due to increased impairment and continued credit migration in our energy loan portfolio and continued growth of the loan portfolio. In addition, a single energy borrower reported steeper than expected production declines and higher lease operating expenses, leading to a $14 million impairment on the loan. No provision for credit losses was necessary for 2014 .

Based on currently available information, our expectations for loan growth, historical credit factors by loan type and other qualitative and environmental factors, and including the results of our energy stress testing, discussed in more detail following, we estimate a loan loss provision range of $60 million to $80 million may be necessary to maintain an appropriate loan loss reserve in 2016.


58



Table 23 Summary of Loan Loss Experience
(In thousands)
Year Ended December 31,
2015
2014
2013
2012
2011
Allowance for loan losses:
Beginning balance
$
189,056

$
185,396

$
215,507

$
253,481

$
292,971

Loans charged off:
Commercial
(6,734
)
(3,569
)
(6,335
)
(9,341
)
(14,836
)
Commercial real estate
(944
)
(2,047
)
(5,845
)
(11,642
)
(15,973
)
Residential mortgage
(2,205
)
(4,448
)
(5,753
)
(10,047
)
(14,107
)
Personal
(5,288
)
(6,168
)
(7,349
)
(11,108
)
(11,884
)
Total
(15,171
)
(16,232
)
(25,282
)
(42,138
)
(56,800
)
Recoveries of loans previously charged off:
Commercial
2,729

5,703

7,488

6,128

7,478

Commercial real estate
11,079

7,003

9,420

5,706

2,780

Residential mortgage
1,260

2,000

1,558

1,928

2,334

Personal
3,052

4,328

4,778

5,056

5,758

Total
18,120

19,034

23,244

18,818

18,350

Net loans recovered (charged off )
2,949

2,802

(2,038
)
(23,320
)
(38,450
)
Provision for loan losses
33,519

858

(28,073
)
(14,654
)
(1,040
)
Ending balance
$
225,524

$
189,056

$
185,396

$
215,507

$
253,481

Accrual for off-balance sheet credit risk:
Beginning balance
$
1,230

$
2,088

$
1,915

$
9,261

$
14,271

Provision for off-balance sheet credit risk
481

(858
)
173

(7,346
)
(5,010
)
Ending balance
$
1,711

$
1,230

$
2,088

$
1,915

$
9,261

Total combined provision for credit losses
$
34,000

$

$
(27,900
)
$
(22,000
)
$
(6,050
)
Allowance for loan losses to loans outstanding at period end
1.41
%
1.33
%
1.45
%
1.75
%
2.25
%
Net charge-offs (recoveries) to average loans
(0.02
)%
(0.02
)%
0.02
%
0.20
%
0.35
%
Total provision for credit losses to average loans
0.23
%
%
(0.23
)%
(0.19
)%
(0.06
)%
Recoveries to gross charge-offs
119.44
%
117.26
%
91.94
%
44.66
%
32.31
%
Allowance for loan losses as a multiple of net charge-offs
(76.47
)x
(67.47
)x
90.97
x
9.24
x
6.59
x
Accrual for off-balance sheet credit risk to off-balance sheet credit commitments
0.02
%
0.01
%
0.03
%
0.03
%
0.14
%
Combined allowance for credit losses to loans outstanding at period-end
1.43
%
1.34
%
1.47
%
1.77
%
2.33
%
1
Includes $7.1 million of negative recovery related to a refund of a settlement between BOK Financial and the City of Tulsa invalidated by the Oklahoma Supreme Court. Excluding this refund, BOK Financial net charge-offs to average loans was 0.14%, recoveries to gross charge-offs were 61.51% and the allowance for loan losses as a multiple of net charge-offs was 13.29x for 2012.

59



Allowance for Loan Losses

The appropriateness of the allowance for loan losses is assessed by management based on an ongoing quarterly evaluation of the probable estimated losses inherent in the portfolio. The allowance consists of specific allowances attributed to certain impaired loans, general allowances based on estimated loss rates by loan class and non-specific allowances based on general economic conditions, concentration in loans with large balances and other relevant factors.

Loans are considered to be impaired when it is probable that we will not collect all amounts due according to the contractual terms of the loan agreements. This includes all nonaccruing loans, all loans modified in trouble debt restructurings and all government guaranteed loans repurchased from GNMA pools. At December 31, 2015 , impaired loans totaled $322 million , including $44 million with specific allowances of $16 million and $278 million with no specific allowances because the loan balances represent the amounts we expect to recover. At December 31, 2014 , impaired loans totaled $283 million , including $1.2 million of impaired loans with specific allowances of $312 thousand and $282 million with no specific allowances.

General allowances for unimpaired loans are based on an estimated loss rate by loan class. Estimated loss rates for risk-graded loans are either increased or decreased based on changes in risk grading for each loan class. Estimated loss rates for both risk-graded and non-risk graded loans may be further adjusted for inherent risks identified for the given loan class which have not yet been captured in the loss rate.

The aggregate amount of general allowances for all unimpaired loans totaled $179 million at December 31, 2015 , compared to $161 million at December 31, 2014 . The general allowance for the commercial loan portfolio segment increase d by $23 million primarily due to loan growth and exposure to lower energy prices. The general allowance for the commercial real estate loan portfolio segment decrease d $1.0 million over December 31, 2014 . The general allowance for residential mortgage loans decrease d $3.9 million . The general allowance for personal loans was largely unchanged compared to the prior year.

Nonspecific allowances are maintained for risks beyond factors specific to a particular portfolio segment or loan class. These factors include trends in the economy in our primary lending areas, concentrations in loans with large balances and other relevant factors. Nonspecific allowances totaled $30 million at December 31, 2015 , compared to $28 million at December 31, 2014 . The nonspecific allowance includes consideration of the indirect impact of falling energy prices on the broader economies within our geographical footprint that are highly dependent on the energy industry.

An allocation of the allowance for loan losses by loan category follows in Table 24 .

Table 24 Allowance for Loan Losses Allocation
(Dollars in thousands)
December 31,
2015
2014
2013
2012
2011
Allowance
% of Loans 1
Allowance
% of Loans 1
Allowance
% of Loans 1
Allowance
% of Loans 1
Allowance
% of Loans 1
Loan category:
Commercial
$
130,334

64.32
%
$
90,875

64.02
%
$
79,180

62.10
%
$
65,280

62.07
%
$
83,443

58.17
%
Commercial real estate
41,391

20.44
%
42,445

19.20
%
41,573

18.88
%
54,884

18.11
%
67,034

20.33
%
Residential mortgage
19,509

11.77
%
23,458

13.72
%
29,465

16.04
%
41,703

16.61
%
46,476

17.52
%
Personal
4,164

3.47
%
4,233

3.06
%
6,965

2.98
%
9,453

3.21
%
10,178

3.98
%
Nonspecific allowance
30,126

28,045

28,213

44,187

46,350

Total
$
225,524

100.00
%
$
189,056

100.00
%
$
185,396

100.00
%
$
215,507

100.00
%
$
253,481

100.00
%
1 Represents ratio of loan category balance to total loans.


60



Our loan monitoring process also identified loans that possess more than the normal amount of risk due to deterioration in the financial condition of the borrower or the value of the collateral. Because the borrowers are still performing in accordance with the original terms of the loan agreements, and no loss of principal or interest is anticipated, these loans were not included in nonperforming assets. Known information does, however, cause management concern as to the borrowers’ continued ability to comply with current repayment terms. The potential problem loans totaled $155 million at December 31, 2015 . The current composition of potential problem loans by primary industry included energy - $130 million , services - $6.8 million , multifamily residential properties - $6.5 million and wholesale/retail - $6.4 million . Potential problem loans totaled $79 million at December 31, 2014 .

Our performing loan totals include loans that management considers to be "other loans especially mentioned" based on regulatory guidelines. Other loans especially mentioned are in compliance with the original terms of the agreement, but may have a weakness that deserves management's close attention. Energy loans categorized as other loans especially mentioned totaled $326 million or 11% of outstanding energy loans at December 31, 2015 and $11 million or less than 1% of outstanding energy loans at December 31, 2014 .

We updated our energy portfolio stress test at December 31, 2015 to determine how the energy portfolio will respond in a prolonged low-price environment. Stress test assumptions included a starting price of $1.80 per million BTUs for natural gas and $25 per barrel of oil, gradually escalating over five years to a maximum of $2.45 and $42, respectively. In this scenario, the energy portfolio exhibits a greater stress than the Company has experienced to date and losses are expected to exceed the Company's fifteen year historical loss rate on energy production loans of 8 basis points. The results of the stress test are factored into our expectation that the loan loss provision could range from $60 million to $80 million for 2016, which includes a significant increase in the loan loss provision for energy-related loans. The portion of the combined allowance for credit losses attributable to the energy portfolio totaled 2.89% of outstanding energy loans at December 31, 2015 , compared to 1.28% of outstanding energy loans at December 31, 2014 .

We have been advised that as banking regulators conduct 2016 shared national credit and targeted energy credit reviews, they will consider all of the borrowers' debts, including senior lien positions, junior lien positions and unsecured debt, in comparison to underlying collateral value whether or not we hold any of the borrower's junior lien or unsecured subordinated debt. This change in grading methodology may increase loans especially mentioned, potential problem loans and non-accruing loans in the first half of 2016. Because substantially all our energy loan portfolio is supported by senior lien positions that have lower loss exposure, the historical relationship between loan classification and loss exposure may become more difficult to evaluate.

Since December 31, energy prices have continued to decline. Closing spot prices for West Texas Intermediate crude oil fell from $37.04 per barrel at year end to a low of $26.21 per barrel on February 11, 2016. Our current loan loss provision forecast for 2016 considers energy price volatility. However, we will better understand the impact of lower prices on our customers during the spring semi-annual revaluation and results of the above mentioned reviews. The results of the revaluation and impact of grading methodology changes on our loan loss provision may exceed our current estimate.

Net Loans Charged Off

Loans are charged off against the allowance for loan losses when the loan balance or a portion of the loan balance is no longer covered by the paying capacity of the borrower based on an evaluation of available cash resources and collateral value. Internally risk graded loans are evaluated quarterly and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans are generally charged off when payments are between 60 days and 180 days past due, depending on loan class. In addition, non-risk graded loans are generally charged-down to collateral value within 60 days of being notified of a borrower's bankruptcy filing, regardless of payment status.

BOK Financial had net recoveries of $2.9 million or (0.02)% of average loans for 2015 and $2.8 million or (0.02)% of average loans in 2014 .

Net commercial loans charged off totaled $4.0 million . Net commercial real estate loan recoveries totaled $10.1 million . Net charge-offs on residential mortgage loans totaled $945 thousand for the year and net charge-offs of personal loans were $2.2 million .

61



Table 25 – Nonperforming Assets
(In thousands)
December 31,
2015
2014
2013
2012
2011
Nonaccruing loans:
Commercial
$
76,424

$
13,527

$
16,760

$
24,467

$
68,811

Commercial real estate
9,001

18,557

40,850

60,626

99,193

Residential mortgage
61,240

48,121

42,320

46,608

29,767

Personal
463

566

1,219

2,709

3,515

Total nonaccruing loans
147,128

80,771

101,149

134,410

201,286

Accruing renegotiated loans:
Guaranteed by U.S. government agencies
74,049

73,985

54,322

38,515

28,974

Other




3,919

Total accruing renegotiated loans
74,049

73,985

54,322

38,515

32,893

Total nonperforming loans
221,177

154,756

155,471

172,925

234,179

Real estate and other repossessed assets:
Guaranteed by U.S. government agencies 1

49,898

37,431

22,365

16,952

Other
30,731

51,963

54,841

81,426

105,801

Real estate and other repossessed assets
30,731

101,861

92,272

103,791

122,753

Total nonperforming assets
$
251,908

$
256,617

$
247,743

$
276,716

$
356,932

Total nonperforming assets excluding those guaranteed by U.S. government agencies
$
155,959

$
129,022

$
155,213

$
215,347

$
311,006

Nonaccruing loans by loan class:


Commercial:


Energy
$
61,189

$
1,416

$
1,860

$
2,460

$
336

Services
10,290

5,201

4,922

12,090

16,968

Healthcare
1,072

1,380

1,586

3,166

5,486

Wholesale/retail
2,919

4,149

6,969

3,077

21,180

Manufacturing
331

450

592

2,007

23,051

Other
623

931

831

1,667

1,790

Total commercial
76,424

13,527

16,760

24,467

68,811

Commercial real estate:


Retail
1,319

3,926

4,857

8,117

6,863

Multifamily
274


7

2,706

3,513

Office
651

3,420

6,391

6,829

11,457

Industrial
76


252

3,968


Residential construction and land development
4,409

5,299

17,377

26,131

61,874

Other commercial real estate
2,272

5,912

11,966

12,875

15,486

Total commercial real estate
9,001

18,557

40,850

60,626

99,193

Residential mortgage:


Permanent mortgage
28,984

34,845

34,279

39,863

25,366

Permanent mortgages guaranteed by U.S. government agencies
21,900

3,712

777

489


Home equity
10,356

9,564

7,264

6,256

4,401

Total residential mortgage
61,240

48,121

42,320

46,608

29,767

Personal
463

566

1,219

2,709

3,515

Total nonaccruing loans
$
147,128

$
80,771

$
101,149

$
134,410

$
201,286


62



Table 25 – Nonperforming Assets
(In thousands)
December 31,
2015
2014
2013
2012
2011
Nonaccruing loans as % of outstanding loan balance for class:
Nonaccruing loans by loan class:
Commercial:
Energy
1.98
%
0.05
%
0.08
%
0.10
%
0.02
%
Services
0.37
%
0.22
%
0.22
%
0.56
%
0.96
%
Healthcare
0.06
%
0.09
%
0.12
%
0.29
%
0.56
%
Wholesale/retail
0.21
%
0.29
%
0.58
%
0.28
%
2.19
%
Manufacturing
0.06
%
0.08
%
0.15
%
0.58
%
6.85
%
Other
0.12
%
0.22
%
0.19
%
0.35
%
0.35
%
Total commercial
0.75
%
0.15
%
0.21
%
0.32
%
1.05
%
Commercial real estate:
Retail
0.17
%
0.59
%
0.83
%
1.55
%
1.35
%
Multifamily
0.04
%
%
%
0.67
%
0.95
%
Office
0.10
%
0.82
%
1.55
%
1.60
%
2.82
%
Industrial
0.01
%
%
0.10
%
1.61
%
%
Residential construction and land development
2.75
%
3.69
%
8.42
%
10.32
%
18.09
%
Other commercial real estate
0.65
%
1.60
%
3.06
%
3.42
%
4.00
%
Total commercial real estate
0.28
%
0.68
%
1.69
%
2.72
%
4.33
%
Residential mortgage:
Permanent mortgage
3.07
%
3.59
%
3.23
%
3.55
%
2.19
%
Permanent mortgages guaranteed by U.S. government agencies
11.12
%
1.80
%
0.43
%
0.30
%
%
Home equity
1.41
%
1.24
%
0.90
%
0.82
%
0.70
%
Total residential mortgage
3.26
%
2.47
%
2.06
%
2.28
%
1.51
%
Personal
0.08
%
0.13
%
0.32
%
0.68
%
0.78
%
Total nonaccruing loans
0.92
%
0.57
%
0.79
%
1.09
%
1.79
%
Allowance for loan losses to nonaccruing loans 2
180.09
%
245.34
%
184.71
%
160.92
%
125.93
%
Accruing loans 90 days or more past due 2
$
1,207

$
125

$
1,415

$
3,925

$
2,496

Foregone interest on nonaccruing loans 3
7,432

8,170

9,815

5,361

11,726

1
Approximately $50 million was reclassified from Real estate and other repossessed assets to Receivables on the balance sheet on January 1, 2015 with the adoption of Financial Accounting Standards Board Update No. 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure ("ASU 2014-14"). With the implementation of ASU 2014-14, upon foreclosure of loans for which the loan balance is expected to be recovered from the guarantee by a U.S. government agency, the loan balance is directly reclassified to other receivables without including such foreclosed assets in real estate and other repossessed assets.
2
Excludes residential mortgages guaranteed by agencies of the U.S. government.
3
Interest collected and recognized on nonaccruing loans was not significant in 2015 and previous years.

Nonperforming assets decrease d $4.7 million during 2015 to $252 million or 1.58% of outstanding loans and repossessed assets at December 31, 2015 . Nonaccruing loans totaled $147 million , accruing renegotiated residential mortgage loans totaled $74 million (all guaranteed by U.S. government agencies) and real estate and other repossessed assets totaled $31 million . All accruing renegotiated residential mortgage loans and $22 million of nonaccruing loans are guaranteed by U.S. government agencies. Permanent mortgage loans guaranteed by U.S. government agencies increased $18 million over the prior year as repurchased loans are reaching program limits on when further interest accruals must be discontinued. Excluding assets guaranteed by U.S. government agencies, nonperforming assets increase d $27 million during the year to $156 million or 0.99% of outstanding non-guaranteed loans and repossessed assets. The increase was primarily due to an increase in nonaccruing energy loans, partially offset by a decrease in real estate and other repossessed assets. The Company generally retains nonperforming assets to maximize potential recovery, which may cause future nonperforming assets to decrease more slowly.

63



Loans are generally classified as nonaccruing when it becomes probable that we will not collect the full contractual principal and interest. As more fully discussed in Note 4 to the Consolidated Financial Statements, we may modify loans in a troubled debt restructuring. Modifications may include extension of payment terms and rate concessions. We generally do not forgive principal or accrued but unpaid interest. All loans modified in troubled debt restructurings, except residential mortgage loans guaranteed by U.S. government agencies, are classified as nonaccruing. We may renew matured nonaccruing loans. All nonaccruing loans, including those renewed or modified in troubled debt restructurings, are charged off when the loan balance is no longer covered by the paying capacity of the borrower based on a quarterly evaluation of available cash resources and collateral value. All nonaccruing loans generally remain on nonaccruing status until full collection of principal and interest in accordance with the original terms, including principal previously charged off, is probable. We generally do not voluntarily modify consumer loans to troubled borrowers. Consumer loans modified at the direction of bankruptcy court orders are identified as troubled debt restructurings and classified as nonaccruing.

As of December 31, 2015 , renegotiated loans consist solely of accruing residential mortgage loans guaranteed by U.S. government agencies that have been modified in troubled debt restructurings. See Note 4 to the Consolidated Financial Statements for additional discussion of troubled debt restructurings. Generally, we modify residential mortgage loans primarily by reducing interest rates and extending the number of payments in accordance with U.S. government agency guidelines. No unpaid principal or interest is forgiven. Interest continues to accrue based on the modified terms of the loan. Modified loans guaranteed by U.S. government agencies under residential mortgage loan programs may be sold once they become eligible according to U.S. agency guidelines.

A rollforward of nonperforming assets for the year ended December 31, 2015 follows in Table 26 .

Table 26 Rollforward of Nonperforming Assets
(In thousands)
Year Ended December 31, 2015
Nonaccruing Loans
Renegotiated Loans
Real Estate and Other Repossessed Assets
Total Nonperforming Assets
Balance, December 31, 2014
$
80,771

$
73,985

$
101,861

$
256,617

Additions
122,385

67,761


190,146

Net transfer to premises and equipment


(1,051
)
(1,051
)
Payments
(31,503
)
(2,747
)

(34,250
)
Charge-offs
(15,171
)


(15,171
)
Net gains (losses) and write-downs


1,940

1,940

Foreclosure of nonaccruing loans
(13,643
)

13,643


Foreclosure of loans guaranteed by U.S. government agencies
(4,601
)
(8,263
)

(12,864
)
Proceeds from sales

(46,655
)
(34,669
)
(81,324
)
Charitable contribution to BOKF Foundation


(796
)
(796
)
Transfer of foreclosed loans guaranteed by U.S. Government agencies to Receivables 1


(49,898
)
(49,898
)
Net transfers to nonaccruing loans
10,489

(10,489
)


Return to accrual status
(1,599
)


(1,599
)
Other, net

457

(299
)
158

Balance, December 31, 2015
$
147,128

$
74,049

$
30,731


$
251,908

1
Approximately $50 million was reclassified from Real estate and other repossessed assets to Receivables on the balance sheet on January 1, 2015 with the adoption of Financial Accounting Standards Board Update No. 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure ("ASU 2014-14"). With the implementation of ASU 2014-14, upon foreclosure of loans for which the loan balance is expected to be recovered from the guarantee by a U.S. government agency, the loan balance is directly reclassified to other receivables without including such foreclosed assets in real estate and other repossessed assets.

We foreclose on loans guaranteed by U.S. government agencies in accordance with agency guidelines. Generally these loans are not eligible for modification programs or have failed to comply with modified loan terms. Principal is guaranteed by agencies of the U.S. government, subject to limitations and credit risk is minimal. These properties will be conveyed to the agencies once applicable criteria have been met.


64



Nonaccruing loans totaled $147 million or 0.92% of outstanding loans at December 31, 2015 compared to $81 million or 0.57% of outstanding loans at December 31, 2014 . Nonaccruing loans increase d $66 million from December 31, 2014 . Newly identified nonaccruing loans totaled $122 million for 2015 , partially offset by $32 million of payments, $15 million of charge-offs and $14 million of foreclosures.
Commercial

Nonaccruing commercial loans totaled $76 million or 0.75% of total commercial loans at December 31, 2015 , compared to $14 million or 0.15% of total commercial loans at December 31, 2014 . Nonaccruing commercial loans increase d $63 million during 2015 . Newly identified nonaccruing commercial loans totaled $79 million , offset by $8.7 million in payments, $6.7 million of charge-offs and $392 thousand of repossessions.
Nonaccruing commercial loans at December 31, 2015 were primarily composed of $61 million or 1.98% of total energy sector loans and $10 million or 0.37% of total services sector loans. Over half of nonaccruing energy loans was a single energy credit.

Commercial Real Estate

Nonaccruing commercial real estate loans were $9.0 million or 0.28% of outstanding commercial real estate loans at December 31, 2015 , compared to $19 million or 0.68% of outstanding commercial real estate loans at December 31, 2014 . The $10 million decrease was primarily due to $13 million of cash payments received, $4.1 million of foreclosures and $944 thousand of charge-offs, partially offset by $8.6 million of newly identified commercial real estate loans during the year.

Nonaccruing commercial real estate loans were composed of $4.4 million or 2.75% of total residential land development and construction loans, $2.3 million or 0.65% of total other commercial real estate loans and $1.3 million or 0.17% of loans secured by retail facilities.

Residential Mortgage and Personal

Nonaccruing residential mortgage loans totaled $61 million or 3.26% of outstanding residential mortgage loans at December 31, 2015 , compared to $48 million or 2.47% of outstanding residential mortgage loans at December 31, 2014 . Newly identified nonaccruing residential mortgage loans of $28 million were offset by $13 million of foreclosures, $9.5 million of cash payments and $2.2 million of loans charged off during the year. Nonaccruing residential mortgage loans primarily consisted of $29 million or 3.07% of non-guaranteed permanent residential mortgage loans and $22 million or 11.12% of permanent residential mortgage loans guaranteed by U.S. government agencies. Nonaccruing home equity loans totaled $10.4 million or 1.41% of total home equity loans.

Payments on accruing residential mortgage loans and personal loans may be delinquent. The composition of residential mortgage loans and personal loans past due but still accruing is included in the following Table 27 . Substantially all non-guaranteed residential loans past due 90 days or more are nonaccruing. Residential mortgage loans 30 to 89 days past due decreased $2.3 million to $6.4 million at December 31, 2015 . Personal loans past due 30 to 89 days increased $146 thousand over December 31, 2014 .

Table 27 Residential Mortgage and Personal Loans Past Due
(In thousands)
December 31, 2015
December 31, 2014
90 Days or More
30 to 89 Days
90 Days or More
30 to 89 Days
Residential mortgage:
Permanent mortgage 1
$

$
3,290

$
46

$
5,970

Home equity
20

3,095

77

2,723

Total residential mortgage
$
20

$
6,385

123

$
8,693





Personal
$
8

$
693

$
2

$
547

1
Excludes past due residential mortgage loans guaranteed by agencies of the U.S. government.


65



Real Estate and Other Repossessed Assets

Real estate and other repossessed assets are assets acquired in partial or total forgiveness of loans. The assets are carried at the lower of cost as determined by fair value at date of foreclosure or current fair value, less estimated selling costs.

Real estate and other repossessed assets totaled $31 million at December 31, 2015 , a $71 million decrease from December 31, 2014 . The distribution of real estate and other repossessed assets distributed primarily by collateral location is included in Table 28 following.

Table 28 Real Estate and Other Repossessed Assets by Collateral Location as of December 31, 2015
(In thousands)

Oklahoma
Texas
Colorado
Arkansas
New
Mexico
Arizona
Kansas/
Missouri
Other
Total
Developed commercial real estate properties
$
64

$
988

$
3,456

$

$
756

$
221

$
3,024

$
1,950

$
10,459

1-4 family residential properties
4,726

2,352


1,180

2,394

3,308

695

120

14,775

Undeveloped land
265

1,520

203



792



2,780

Residential land development properties
162


594



1,570

2


2,328

Vehicles
4

56



5




65

Other





324



324

Total real estate and other repossessed assets
$
5,221

$
4,916

$
4,253

$
1,180

$
3,155

$
6,215

$
3,721

$
2,070

$
30,731


Undeveloped land is primarily zoned for commercial development. Developed commercial real estate properties are primarily completed with no additional construction necessary for sale.
Liquidity and Capital
Subsidiary Bank

Deposits and borrowed funds are the primary sources of liquidity for the subsidiary bank. Based on the average balances for 2015 , approximately 68% of our funding was provided by deposit accounts, 17% from borrowed funds, 1% from long-term subordinated debt and 11% from equity. Our funding sources, which primarily include deposits and borrowings from the Federal Home Loan Banks and other banks, provide adequate liquidity to meet our operating needs.

Deposit accounts represent our largest funding source. We compete for retail and commercial deposits by offering a broad range of products and services and focusing on customer convenience. Retail deposit growth is supported through our Perfect Banking sales and customer service program, free checking, online bill paying services, mobile banking services, an extensive network of branch locations and ATMs and a 24-hour Express Bank call center. Commercial deposit growth is supported by offering treasury management and lockbox services. We also acquire brokered deposits when the cost of funds is advantageous to other funding sources.


66



Table 29 - Average Deposits by Line of Business
(In thousands)
Year Ended December 31,
2015
2014
Commercial Banking
$
8,775,048

$
8,887,809

Consumer Banking
6,668,520

6,520,835

Wealth Management
4,573,853

4,391,434

Subtotal
20,017,421

19,800,078

Funds Management and other
915,825

615,080

Total
$
20,933,246

$
20,415,158


Average deposits for 2015 totaled $20.9 billion and represented approximately 68% of total liabilities and capital compared with $20.4 billion and 73% of total liabilities and capital for 2014 . Average deposits increase d $518 million over the prior year. Demand deposits increase d $361 million and interest-bearing transaction deposit accounts were up $182 million . Time deposits decrease d $57 million .

Average Commercial Banking deposit balances decrease d $113 million compared to the prior year, due primarily to a $177 million decrease in interest-bearing transaction deposits, partially offset by an $88 million increase in demand deposit balances. Average balances attributed to our commercial & industrial loan customers increase d $495 million or 13% . Average balances attributed to our healthcare customers grew by $82 million or 15% over the prior year. Small business banking customer average balances increase d $118 million or 10% . Average balances attributed to our energy customers decrease d $98 million or 6% . Average balances held by treasury services customers decrease d $768 million or 57% compared to the prior year. Commercial customers continue to maintain large cash reserves primarily due to low yields available on other high quality investment alternatives and to minimize deposit service charges through the earnings credit. The earnings credit is a non-cash method that enables commercial customers to offset deposit service charges based on account balances.

Average Consumer Banking deposit balances increase d $148 million from 2014 . Demand deposit balances grew by $166 million and interest-bearing transaction account balances increase d $124 million . Higher costing time deposit balances decrease d $178 million . Average Wealth Management deposits increase d $182 million over the prior year. Time deposit balances grew by $178 million and demand deposit balances grew by $106 million during 2015 , offset by a $100 million decrease in interest-bearing transaction accounts.

The general trend of increased deposits over the past several years reflects modest growth in the overall economy and low short-term interest rates. If economic activity were to improve significantly or if short-term interest rates were to increase further, deposits may decline as customers deploy funds into projects or shift demand deposits into money market instruments.

Table 30 - Maturity of Domestic CDs and Public
Funds in Amounts of $100,000 or More
(In thousands)
December 31,
2015
2014
Months to maturity:
3 or less
$
292,292

$
225,410

Over 3 through 6
206,935

166,578

Over 6 through 12
268,894

375,032

Over 12
746,719

915,029

Total
$
1,514,840

$
1,682,049


Brokered deposits included in time deposits averaged $416 million for 2015 compared to $237 million for 2014 . Brokered deposits included in time deposits totaled $358 million at December 31, 2015 and $334 million at December 31, 2014 .

Average interest-bearing transaction accounts for 2015 included $577 million of brokered deposits compared to $298 million for 2014 . Brokered deposits included in interest-bearing transaction accounts totaled $561 million at December 31, 2015 and $585 million at December 31, 2014 .

67



The distribution of our period end deposit account balances among principal markets follows in Table 31 .

Table 31 -- Period End Deposits by Principal Market Area
(In thousands)
December 31,
2015
2014
2013
2012
2011
Bank of Oklahoma:
Demand
$
4,133,520

$
3,828,819

$
3,432,940

$
4,207,263

$
3,196,436

Interest-bearing:
Transaction
5,971,819

6,117,886

6,318,045

6,023,384

5,966,528

Savings
226,733

206,357

191,880

163,512

126,682

Time
1,202,274

1,301,194

1,214,507

1,267,854

1,444,332

Total interest-bearing
7,400,826

7,625,437

7,724,432

7,454,750

7,537,542

Total Bank of Oklahoma
11,534,346

11,454,256

11,157,372

11,662,013

10,733,978

Bank of Texas:
Demand
2,627,764

2,639,732

2,481,603

2,606,176

1,808,490

Interest-bearing:
Transaction
2,132,099

2,065,723

1,966,580

2,129,084

1,940,819

Savings
77,902

72,037

64,632

58,429

45,872

Time
549,740

547,316

638,465

762,233

867,664

Total interest-bearing
2,759,741

2,685,076

2,669,677

2,949,746

2,854,355

Total Bank of Texas
5,387,505

5,324,808

5,151,280

5,555,922

4,662,845

Bank of Albuquerque:
Demand
487,286

487,819

502,395

427,510

319,269

Interest-bearing:
Transaction
563,723

519,544

529,140

511,758

491,068

Savings
43,672

37,471

33,944

31,926

27,487

Time
267,821

295,798

327,281

364,928

410,722

Total interest-bearing
875,216

852,813

890,365

908,612

929,277

Total Bank of Albuquerque
1,362,502

1,340,632

1,392,760

1,336,122

1,248,546

Bank of Arkansas:
Demand
27,252

35,996

38,566

39,897

19,405

Interest-bearing:
Transaction
202,857

158,115

144,018

101,868

131,703

Savings
1,747

1,936

1,986

2,239

1,727

Time
24,983

28,520

32,949

42,573

61,329

Total interest-bearing
229,587

188,571

178,953

146,680

194,759

Total Bank of Arkansas
256,839

224,567

217,519

186,577

214,164


68



Table 31 -- Period End Deposits by Principal Market Area
(In thousands)
December 31,
2015
2014
2013
2012
2011
Colorado State Bank & Trust:
Demand
497,318

445,755

409,942

336,252

292,556

Interest-bearing:
Transaction
616,697

631,874

541,675

676,144

512,904

Savings
31,927

29,811

26,880

25,889

22,771

Time
296,224

353,998

407,088

472,305

523,969

Total interest-bearing
944,848

1,015,683

975,643

1,174,338

1,059,644

Total Colorado State Bank & Trust
1,442,166

1,461,438

1,385,585

1,510,590

1,352,200

Bank of Arizona:
Demand
326,324

369,115

204,092

161,093

106,741

Interest-bearing:
Transaction
358,556

347,214

364,736

360,276

104,961

Savings
2,893

2,545

2,432

1,978

1,192

Time
29,498

36,680

34,391

31,371

37,641

Total interest-bearing
390,947

386,439

401,559

393,625

143,794

Total Bank of Arizona
717,271

755,554

605,651

554,718

250,535

Bank of Kansas City:
Demand
197,424

259,121

246,739

260,095

56,888

Interest-bearing:
Transaction
153,203

273,999

69,857

85,524

206,473

Savings
1,378

1,274

1,252

771

626

Time
35,524

45,210

41,312

26,728

36,325

Total interest-bearing
190,105

320,483

112,421

113,023

243,424

Total Bank of Kansas City
387,529

579,604

359,160

373,118

300,312

Total BOK Financial deposits
$
21,088,158

$
21,140,859

$
20,269,327

$
21,179,060

$
18,762,580


See Note 9 to the Consolidated Financial Statements for a summary of other borrowings.

In addition to deposits, subsidiary bank liquidity is provided primarily by federal funds purchased, securities repurchase agreements and Federal Home Loan Bank borrowings. Federal funds purchased consist primarily of unsecured, overnight funds acquired from other financial institutions. Funds are primarily purchased from bankers’ banks and Federal Home Loan banks from across the country. The largest single source of wholesale federal funds purchased totaled $430 million at December 31, 2015 . Securities repurchase agreements generally mature within 90 days and are secured by certain available for sale securities. Federal Home Loan Bank borrowings are generally short term and are secured by a blanket pledge of eligible collateral (generally unencumbered U.S. Treasury and mortgage-backed securities, 1-4 family residential mortgage loans, multifamily and other qualifying commercial real estate loans). Amounts borrowed from the Federal Home Loan Bank of Topeka averaged $4.9 billion during 2015 and $1.9 billion during 2014 .

At December 31, 2015 , the estimated unused credit available to the subsidiary bank from collateralized sources was approximately $5.1 billion.

69



In 2007, the Bank issued $250 million of subordinated debt due May 15, 2017 to fund the Worth National Bank and First United Bank acquisitions and fund continued asset growth. Interest on this debt was based on a fixed rate of 5.75% through May 14, 2012 which then converted to a floating rate of three-month LIBOR plus 0.69%. At December 31, 2015 , $226 million of this subordinated debt remains outstanding.
In 2005, the Bank issued $150 million of 10-year, fixed rate subordinated debt. The cost of this subordinated debt, including issuance discounts and hedge loss, is 5.56%. The proceeds of this debt were used to repay $95 million of BOK Financial's unsecured revolving line of credit and to provide additional capital to support asset growth. The remaining outstanding balance of $122 million matured on June 1, 2015.
The Bank also has a liability related to the repurchase of certain delinquent residential mortgage loans previously sold in GNMA mortgage pools. Interest is payable monthly at rates contractually due to investors.
Parent Company and Other Non-Bank Subsidiaries

The primary sources of liquidity for BOK Financial are cash on hand and dividends from the subsidiary bank. Cash on hand at December 31, 2015 totaled $282 million . Dividends from the subsidiary bank are limited by various banking regulations to net profits, as defined, for the year plus retained profits for the two preceding years. Dividends are further restricted by minimum capital requirements. At December 31, 2015 , based on the most restrictive limitations as well as management’s internal capital policy, the subsidiary bank could declare up to $100 million of dividends without regulatory approval. Dividend constraints may be alleviated through increases in retained earnings, capital issuances or changes in risk weighted assets. Future losses or increases in required regulatory capital at the subsidiary bank could also affect its ability to pay dividends to the parent company. As discussed further in Note 6 to the consolidated financial statements, the holding company will pay $102.5 million in an all-cash deal for all outstanding shares of MBT Bancshares stock in 2016, subject to customary closing conditions, including regulatory approval, and potential adjustments.

The Company had a $100 million senior unsecured 364 day revolving credit facility with Wells Fargo Bank, National Association, administrative agent and other commercial banks which matured on June 5, 2015 and was not renewed by us.

Our equity capital at December 31, 2015 was $3.2 billion , a decrease of $72 million from December 31, 2014 . Net income less cash dividends paid increase d equity $173 million during 2015 . Accumulated other comprehensive income decrease d $35 million during 2015 primarily related to the change in net unrealized gains and losses on available for sale securities. The Company also repurchased $230 million of our common stock during 2015 as described below. Capital is managed to maximize long-term value to the shareholders. Factors considered in managing capital include projections of future earnings, asset growth and acquisition strategies, and regulatory and debt covenant requirements. Capital management may include subordinated debt issuance, share repurchase and stock and cash dividends.

On April 24, 2012, the Board of Directors authorized the Company to purchase up to two million shares of our common stock. The specific timing and amount of shares repurchased will vary based on market conditions, regulatory limitations and other factors. Repurchases may be made over time in open market or privately negotiated transactions. The repurchase program may be suspended or discontinued at any time without prior notice. The Company repurchased 1,760,504 shares during 2015 at the average price of $62.35 per share, completing this existing authorization. On October 27, 2015, the board of directors authorized the Company to purchase up to five million additional common shares, subject to market conditions, securities laws and other regulatory compliance limitations. The Company repurchased an additional 1,874,074 shares during 2015 under this new authorization at an average price of $63.91 per share.

BOK Financial and the subsidiary bank are subject to various capital requirements administered by federal agencies. Failure to meet minimum capital requirements can result in certain mandatory and additional discretionary actions by regulators that could have a material impact on operations. These capital requirements include quantitative measures of assets, liabilities and off-balance sheet items. The capital standards are also subject to qualitative judgments by the regulators.

New capital rules were effective for BOK Financial on January 1, 2015. Components of these rules will phase in through January 1, 2019. The new capital rules reduced instruments that qualify as regulatory capital and generally increased risk weighted assets. The impact of these changes was partially offset by improved data granularity. The new capital rules establish a 7% threshold for the common equity Tier 1 ratio consisting of a minimum level plus capital conservation buffer. The Company has elected to exclude unrealized gains and losses from available for sale securities from its calculation of Tier 1 capital, consistent with the treatment under previous capital rules.


70



The rules also change both the Tier 1 risk based capital requirements and the total risk based requirements to a minimum of 6% and 8%, respectively, plus a capital conservation buffer of 2.5% totaling 8.5% and 10.5%, respectively. The leverage ratio requirement under the rule is 4%. A banking organization which falls below these levels, including the capital conservation buffer, would be subject to regulatory restrictions on capital distributions (including but not limited to dividends and share repurchases) and executive bonus payments.

The capital ratios for BOK Financial on a consolidated basis are presented in Table 32 following.

Table 32 Capital Ratios
Minimum Capital Requirement 1
Capital Conservation Buffer 2
Minimum Capital Requirement Including Capital Conservation Buffer
December 31,
2015
2014 3
Risk-based capital:

Common equity Tier 1
4.50
%
2.50
%
7.00
%
12.13
%
N/A

Tier 1 capital
6.00
%
2.50
%
8.50
%
12.13
%
13.33
%
Total capital
8.00
%
2.50
%
10.50
%
13.30
%
14.66
%
Tier 1 Leverage
4.00
%
N/A

4.00
%
9.25
%
9.96
%
Average total equity to average assets
11.03
%
11.47
%
Tangible common equity ratio
9.02
%
10.08
%
Tier 1 common equity ratio
11.97
%
13.17
%
1
Effective January 1, 2015
2
Effective January 1, 2016
3 Calculated under then current capital rules
Capital resources of financial institutions are also regularly measured by the tangible common shareholders’ equity ratio. Tangible common shareholders’ equity is shareholders’ equity as defined by generally accepted accounting principles in the United States of America (“GAAP”), including unrealized gains and losses on available for sale securities, less intangible assets and equity which does not benefit common shareholders. Equity that does not benefit common shareholders includes preferred equity. This non-GAAP measure is a valuable indicator of a financial institution’s capital strength since it eliminates intangible assets from shareholders’ equity and retains the effect of unrealized losses on securities and other components of accumulated other comprehensive income in shareholders’ equity.

Table 33 following provides a reconciliation of the non-GAAP measures with financial measures defined by GAAP.

Table 33 Non-GAAP Measures
(Dollars in thousands)
December 31,
2015
2014
Tangible common equity ratio:
Total shareholders' equity
$
3,230,556

$
3,302,179

Less: Goodwill and intangible assets, net
429,370

412,156

Tangible common equity
2,801,186

2,890,023

Total assets
31,476,128

29,089,698

Less: Goodwill and intangible assets, net
429,370

412,156

Tangible assets
$
31,046,758

$
28,677,542

Tangible common equity ratio
9.02
%
10.08
%


71



On June 17, 2015, BOK Financial published the results of its annual capital stress test. In accordance with the Dodd-Frank Act, the Federal Reserve must publish regulations that require bank holding companies with $10 billion to $50 billion in assets to perform annual capital stress tests. The requirements for annual capital stress tests became effective for the Company in the fourth quarter of 2013. The Dodd-Frank Act Stress Test ("DFAST") is a forward-looking exercise under which the Company and its banking subsidiary estimate the impact of a hypothetical severely adverse macroeconomic scenario provided by the Federal Reserve and Office of the Comptroller of the Currency on its financial condition and regulatory capital ratios over a nine-quarter time horizon. Under the scenario provided by the regulatory agencies, all capital ratio measures remain comfortably above minimum regulatory thresholds. Additional information concerning the annual stress test may be found on the Company's Investor Relations page at www.bokf.com under the "Presentations" tab. The results of future capital stress tests may place constraints on capital distributions or increases in required regulatory capital under certain circumstances.


Off-Balance Sheet Arrangements

See Note 14 to the Consolidated Financial Statements for a discussion of the Company’s significant off-balance sheet commitments.


Aggregate Contractual Obligations

BOK Financial has numerous contractual obligations in the normal course of business. These obligations include time deposits and other borrowed funds, premises used under various operating leases, commitments to extend credit to borrowers and to purchase securities, derivative contracts and contracts for services such as data processing that are integral to our operations. Table 34 following summarizes payments due per these contractual obligations at December 31, 2015 .

Table 34 Contractual Obligations as of December 31, 2015
(In thousands)
Less Than
1 Year
1 to 3
Years
4 to 5
Years
More Than
5 Years
Total
Time deposits
$
776,536

$
560,239

$
179,202

$
354,496

$
1,870,473

Other borrowings
724

1,614

2,168

15,056

19,562

Subordinated debentures
2,382

229,725



232,107

Operating lease obligations
23,995

39,164

27,423

56,426

147,008

Derivative contracts
568,934

9,497

1,525

1,745

581,701

Data processing services
17,232

26,267

8,783

1,265

53,547

Total
$
1,389,803

$
866,506

$
219,101

$
428,988

$
2,904,398

Loan commitments
$
8,455,037

Standby letters of credit
507,988

Mortgage loans sold with recourse
155,489

Alternative investment commitments
20,891

Unfunded third-party private equity commitments
4,866


Payments on time deposits, other borrowed funds and subordinated debentures include interest which has been calculated from rates at December 31, 2015 . These obligations may have variable interest rates and actual payments will differ from the amounts shown on this table.

Payments on time deposits are based on contractual maturity dates. These funds may be withdrawn prior to maturity. We may charge the customer a penalty for early withdrawal.

Operating lease commitments generally represent real property we rent for branch offices, corporate offices and operations facilities. Payments presented represent the minimum lease payments and exclude related costs such as utilities and property taxes.


72



Obligations under derivative contracts are used in customer hedging programs. As previously discussed, we have entered into derivative contracts which are expected to substantially offset the cash payments due on these obligations.

We also have obligations with respect to employee benefit plans. See Note 11 to the Consolidated Financial Statements for additional information about our employee benefit plans.

Data processing and communications contracts represent the minimum obligations under the contracts. Additional payments that are based on the volume of transactions processed are excluded.

Loan commitments represent legally binding obligations to provide financing to our customers. Some of these commitments are expected to expire before being drawn upon and the total commitment amounts do not necessarily represent future cash requirements. Approximately $1.4 billion of the loan commitments expire within one year.

The Company has funded $146 million and has commitments to fund an additional $21 million for various alternative investments. Alternative investments generally consist of limited partnership interests in or loans to entities that invest in low income housing or economic development projects, distressed assets, energy development, venture capital and other activities. The Company is prohibited by banking regulations from controlling or actively managing the activities of these investments. Legally binding commitments to fund alternative investments are recognized as liabilities in the consolidated financial statements.

An indirect wholly-owned subsidiary of the Company is general partner of two private equity funds and has contingent obligations to make additional investments totaling $4.9 million as of December 31, 2015 . These commitments, which are included in unfunded third-party private equity commitments, generally reflect customer investment obligations. We do not recognize contingent commitments to fund investments that are primarily customer obligations as liabilities in the consolidated financial statements.


Recently Issued Accounting Standards

See Note 1 of the consolidated financial statements for disclosure of newly adopted and pending accounting standards.

Forward-Looking Statements

This report contains forward-looking statements that are based on management's beliefs, assumptions, current expectations, estimates, and projections about BOK Financial, the financial services industry and the economy in general. Words such as “anticipates,” “believes,” ”estimates,” “expects,” “forecasts,” “plans,” “projects,” variations of such words and similar expressions are intended to identify such forward-looking statements. Management judgments relating to and discussion of the provision and allowance for loan losses and accrual for off-balance sheet credit risk, allowance for uncertain tax positions and accruals for loss contingencies involve judgments as to expected events and are inherently forward-looking statements. Assessments that BOK Financial's acquisitions and other growth endeavors will be profitable are necessary statements of belief as to the outcome of future events, based in part on information provided by others that BOK Financial has not independently verified. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict with regard to timing, extent, likelihood and degree of occurrence. Therefore, actual results and outcomes may materially differ from what is expressed, implied, or forecasted in such forward-looking statements. Internal and external factors that might cause such a difference include, but are not limited to: (1) the ability to fully realize expected cost savings from mergers within the expected time frames, (2) the ability of other companies on which BOK Financial relies to provide goods and services in a timely and accurate manner, (3) changes in interest rates and interest rate relationships, (4) demand for products and services, (5) the degree of competition by traditional and nontraditional competitors, (6) changes in banking regulations, tax laws, prices, levies, and assessments, (7) the impact of technological advances and (8) trends in customer behavior as well as their ability to repay loans. BOK Financial and its affiliates undertake no obligation to update, amend, or clarify forward-looking statements, whether as a result of new information, future events or otherwise.

Legal Notice

As used in this report, the term “BOK Financial” and such terms as “the Company,” “the Corporation,” “our,” “we” and “us” may refer to one or more of the consolidated subsidiaries or all of them taken as a whole. All these terms are used for convenience only and are not intended as a precise description of any of the separate companies, each of which manages its own affairs.

73



ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Market Risk

Market risk is a broad term for the risk of economic loss due to adverse changes in the fair value of a financial instrument. These changes may be the result of various factors, including interest rates, foreign exchange rates, commodity prices or equity prices. Financial instruments that are subject to market risk can be classified either as held for trading or held for purposes other than trading. Market risk excludes changes in fair value due to credit of the individual issuers of financial instruments.

BOK Financial is subject to market risk primarily through the effect of changes in interest rates on both its assets held for purposes other than trading and trading assets. The effects of other changes, such as foreign exchange rates, commodity prices or equity prices do not pose significant market risk to BOK Financial. BOK Financial has no material investments in assets that are affected by changes in foreign exchange rates or equity prices. Energy and agricultural product derivative contracts, which are affected by changes in commodity prices, are matched against offsetting contracts as previously discussed.

The Asset/Liability Committee is responsible for managing market risk in accordance with policy guidelines established by the Board of Directors. The Committee monitors projected variation in net interest revenue, net interest income and economic value of equity due to specified changes in interest rates. The internal policy limit for net interest revenue variation is a maximum decline of 5% to an up or down 200 basis point change over twelve months. These guidelines also set maximum levels for short-term borrowings, short-term assets, public funds and brokered deposits and establish minimum levels for unpledged assets, among other things. Compliance with these internal guidelines is reviewed monthly. Further, in 2015, the Asset/Liability Committee approved new market risk limits for fixed income trading, mortgage pipeline and mortgage servicing assets inclusive of economic hedge benefits. Each of these three desks must limit projected exposure from a 50 basis point change in interest rates.
Interest Rate Risk – Other than Trading
As previously noted in the Net Interest Revenue section of this report, management has implemented strategies to manage the Company’s balance sheet to have relatively limited exposure to changes in interest rates over a twelve-month period. The effectiveness of these strategies in managing the overall interest rate risk is evaluated through the use of an asset/liability model. BOK Financial performs a sensitivity analysis to identify more dynamic interest rate risk exposures, including embedded option positions, on net interest revenue, net income and economic value of equity. A simulation model is used to estimate the effect of changes in interest rates on the Company's performance across multiple interest rate scenarios. While the current internal policy limit for net interest revenue variation is a maximum decline of 5% due to a 200 basis point change in market interest rates over twelve months, the results of a 200 basis point decrease in interest rates in the current low-rate environment are not meaningful. We report the effect of a 50 basis point decrease in the interim.

The Company’s primary interest rate exposures include the Federal Funds rate, which affects short-term borrowings, and the prime lending rate and LIBOR, which are the basis for much of the variable rate loan pricing. Additionally, residential mortgage rates directly affect the prepayment speeds for residential mortgage-backed securities and mortgage servicing rights. Derivative financial instruments and other financial instruments used for purposes other than trading are included in this simulation. In addition, the impact on the level and composition of demand deposit accounts and other core deposit balances resulting from a significant increase in short-term market interest rates and the overall interest rate environment is likely to be material. The simulation incorporates assumptions regarding the effects of such changes based on a combination of historical analysis and expected behavior. The impact of planned growth and new business activities is factored into the simulation model. The effects of changes in interest rates on the value of mortgage servicing rights are excluded from Table 35 due to the extreme volatility over such a large rate range and our active risk management approach for that asset. The effects of interest rate changes on the value of mortgage servicing rights and financial instruments identified as economic hedges are presented in Note 7 to the Consolidated Financial Statements.

The simulations used to manage market risk are based on numerous assumptions regarding the effects of changes in interest rates on the timing and extent of re-pricing characteristics, future cash flows and customer behavior. These assumptions are inherently uncertain and, as a result, the model cannot precisely estimate net interest revenue, net income or economic value of equity or precisely predict the impact of higher or lower interest rates on net interest revenue, net income or economic value of equity. Actual results will differ from simulated results due to timing, magnitude and frequency of interest rate changes, market conditions and management strategies, among other factors.


74



Table 35 – Interest Rate Sensitivity
(Dollar in thousands)
200 bp Increase
50 bp Decrease
2015
2014
2015
2014
Anticipated impact over the next twelve months on net interest revenue
$
(7,576
)
$
(5,046
)
$
(22,501
)
$
(18,617
)
(0.97
)%
(0.70
)%
(2.87
)%
(2.58
)%

Trading Activities

BOK Financial enters into trading activities both as an intermediary for customers and for its own account. As an intermediary, BOK Financial will take positions in securities, generally residential mortgage-backed securities, government agency securities and municipal bonds. These securities are purchased for resale to customers, which include individuals, corporations, foundations and financial institutions. On a limited basis, BOK Financial may also take trading positions in U.S. Treasury securities, residential mortgage-backed securities, and municipal bonds to enhance returns on its securities portfolios. Both of these activities involve interest rate, liquidity and price risk. BOKF Financial has an insignificant exposure to foreign exchange risk and does not take positions in commodity derivatives.

A variety of methods are used to manage the interest rate risk of trading activities. These methods include daily marking of all positions to market value, independent verification of inventory pricing, and position limits for each trading activity. Hedges in either the futures or cash markets may be used to reduce the risk associated with some trading programs.

Management uses a Value at Risk (“VaR”) methodology to measure the market risk due to changes in interest rates inherent in its trading activities. VaR is calculated based upon historical simulations over the past five years using a variance/covariance matrix of interest rate changes, a 10 business day holding period and a 99% confidence interval. It represents an amount of market loss that is likely to be exceeded in only one out of every 100 two-week periods. Trading positions are managed within guidelines approved by the Board of Directors. These guidelines limit the VaR to $7.3 million. There were no instances of VaR being exceeded during the years ended December 31, 2015 and 2014 . At December 31, 2015 , there were no trading positions for the purposes of enhancing returns on the Company's securities portfolio.

The average, high and low VaR amounts for the years ended December 31, 2015 , 2014 , and 2013 are as follows in Table 36 .

Table 36 Value at Risk (VaR)
(In thousands)
Year Ended December 31,
2015
2014
2013
Average
$
1,534

$
1,987

$
2,785

High
2,680

3,868

5,826

Low
754

479

261


75



ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Report of Management on Financial Statements

Management of BOK Financial is responsible for the preparation, integrity and fair presentation of the consolidated financial statements included in this annual report. The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States and necessarily include some amounts that are based on our best estimates and judgments.

Management, under the supervision of the Chief Executive Officer and the Chief Financial Officer, conducted an assessment of internal control over financial reporting as of December 31, 2015 . Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company’s consolidated financial statements for external purposes in accordance with accounting principles generally accepted in the United States. In establishing internal control over financial reporting, management assesses risk and designs controls to prevent or detect financial reporting misstatements that may be consequential to a reader. Management also assesses the impact of any internal control deficiencies and oversees efforts to improve internal control over financial reporting. Because of inherent limitations, it is possible that internal controls may not prevent or detect misstatements, and it is possible that internal controls may vary over time based on changing conditions. There have been no material changes in internal controls subsequent to December 31, 2015 .

The Audit Committee, consisting entirely of independent directors, meets regularly with management, internal auditors and the independent registered public accounting firm, Ernst & Young LLP, regarding management’s assessment of internal control over financial reporting.

Report of Management on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting and for assessing the effectiveness of internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f), as amended. Management has assessed the effectiveness of the Company’s internal control over financial reporting based on the criteria established in “Internal Control – Integrated Framework,” issued by the Committee of Sponsoring Organizations (“COSO”) of the Treadway Commission in 2013. Based on that assessment and criteria, management has determined that the Company maintained effective internal control over financial reporting as of December 31, 2015 .

Ernst & Young LLP, the independent registered public accounting firm that audited the consolidated financial statements of the Company included in this annual report has issued an audit report on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2015 . Their report, which expresses unqualified opinion on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2015 , is included in this annual report.



76



Report of Ernst & Young, LLP, Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of BOK Financial Corporation

We have audited the accompanying consolidated balance sheets of BOK Financial Corporation ("the Company") as of December 31, 2015 and 2014 , and the related consolidated statements of earnings, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015 . These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of BOK Financial Corporation at December 31, 2015 and 2014 , and the consolidated results of its operations and its cash flows for each of the three years in the period ended December 31, 2015 , in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), BOK Financial Corporation's internal control over financial reporting as of December 31, 2015 , based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 29, 2016 expressed an unqualified opinion thereon.


/s/ Ernst & Young LLP


Tulsa, Oklahoma
February 29, 2016


77



Report of Ernst & Young, LLP, Independent Registered Public Accounting Firm

The Board of Directors and Shareholders of BOK Financial Corporation

We have audited BOK Financial Corporation’s ("the Company") internal control over financial reporting as of December 31, 2015 , based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). BOK Financial Corporation’s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Report of Management on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit.

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, BOK Financial Corporation maintained, in all material respects, effective internal control over financial reporting as of December 31, 2015 , based on the COSO criteria .

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of BOK Financial Corporation as of December 31, 2015 and 2014 , and the related consolidated statements of earnings, comprehensive income, changes in equity, and cash flows for each of the three years in the period ended December 31, 2015 and our report dated February 29, 2016 expressed an unqualified opinion thereon.


/s/ Ernst & Young LLP


Tulsa, Oklahoma
February 29, 2016



78



Consolidated Statements of Earnings
(In thousands, except share and per share data)
Year Ended December 31,
Interest revenue
2015
2014
2013
Loans
$
529,683

$
502,753

$
498,600

Residential mortgage loans held for sale
13,602

10,143

8,505

Trading securities
2,240

1,945

1,962

Taxable securities
12,932

13,183

14,260

Tax-exempt securities
5,166

5,708

4,781

Total investment securities
18,098

18,891

19,041

Taxable securities
172,582

182,923

204,830

Tax-exempt securities
2,247

2,184

2,380

Total available for sale securities
174,829

185,107

207,210

Fair value option securities
9,264

3,611

3,907

Restricted equity securities
13,532

7,040

5,071

Interest-bearing cash and cash equivalents
5,580

2,749

1,075

Total interest revenue
766,828

732,239

745,371

Interest expense



Deposits
44,170

50,683

55,564

Borrowed funds
14,204

7,672

6,589

Subordinated debentures
5,100

8,690

8,741

Total interest expense
63,474

67,045

70,894

Net interest revenue
703,354

665,194

674,477

Provision for credit losses
34,000


(27,900
)
Net interest revenue after provision for credit losses
669,354

665,194

702,377

Other operating revenue



Brokerage and trading revenue
129,556

134,437

125,478

Transaction card revenue
128,621

123,689

116,823

Fiduciary and asset management revenue
126,153

115,652

96,082

Deposit service charges and fees
90,431

90,911

95,110

Mortgage banking revenue
134,375

109,093

121,934

Bank-owned life insurance
9,304

9,086

10,155

Other revenue
40,579

38,451

38,262

Total fees and commissions
659,019

621,319

603,844

Gain on assets, net
5,702

2,953

4,875

Gain (loss) on derivatives, net
430

2,776

(4,367
)
Gain (loss) on fair value option securities, net
(3,684
)
10,189

(15,212
)
Change in fair value of mortgage servicing rights
(4,853
)
(16,445
)
22,720

Gain on available for sale securities, net
12,058

1,539

10,720

Total other-than-temporary impairment losses
(2,443
)
(373
)
(2,574
)
Portion of loss recognized in other comprehensive income
624


266

Net impairment losses recognized in earnings
(1,819
)
(373
)
(2,308
)
Total other operating revenue
666,853

621,958

620,272

Other operating expense



Personnel
523,487

476,931

505,225

Business promotion
27,851

26,649

22,598

Charitable contributions to BOKF Foundation
796

4,267

2,062

Professional fees and services
40,123

44,440

32,552

Net occupancy and equipment
76,016

77,232

69,773

Insurance
20,375

18,578

16,122

Data processing and communications
122,383

115,225

105,967

Printing, postage and supplies
13,498

13,518

13,885

Net losses and operating expenses of repossessed assets
1,446

6,019

5,160

Amortization of intangible assets
4,359

3,965

3,428

Mortgage banking costs
38,997

31,705

31,196

Other expense
35,233

28,993

32,652

Total other operating expense
904,564

847,522

840,620

Net income before taxes
431,643

439,630

482,029

Federal and state income taxes
139,384

144,151

163,098

Net income
292,259

295,479

318,931

Net income attributable to non-controlling interests
3,694

3,044

2,322

Net income attributable to BOK Financial Corporation shareholders
$
288,565

$
292,435

$
316,609

Earnings per share:



Basic
$
4.22

$
4.23

$
4.61

Diluted
$
4.21

$
4.22

$
4.59

Average shares used in computation:



Basic
67,594,689

68,394,194

67,988,897

Diluted
67,691,658

68,544,770

68,205,519

Dividends declared per share
$
1.69

$
1.62

$
1.54

See accompanying notes to consolidated financial statements.

79



Consolidated Statements of Comprehensive Income
(In thousands)
Year Ended December 31,
2015
2014
2013
Net income
$
292,259

$
295,479

$
318,931

Other comprehensive income (loss) before income taxes:
Net change in unrealized gain (loss)
(46,803
)
136,775

(275,945
)
Reclassification adjustments included in earnings:
Interest revenue, Investments securities, Taxable securities
(503
)
(1,216
)
(3,210
)
Interest expense, Subordinated debentures
121

296

262

Net impairment losses recognized in earnings
1,819

373

2,308

Gain on available for sale securities, net
(12,058
)
(1,539
)
(10,720
)
Other comprehensive income (loss), before income taxes
(57,424
)
134,689

(287,305
)
Federal and state income taxes
(22,338
)
52,393

(111,762
)
Other comprehensive income (loss), net of income taxes
(35,086
)

82,296


(175,543
)
Comprehensive income
257,173

377,775

143,388

Comprehensive income attributable to non-controlling interests
3,694

3,044

2,322

Comprehensive income attributable to BOK Financial Corp. shareholders
$
253,479

$
374,731

$
141,066


See accompanying notes to consolidated financial statements.

80



Consolidated Balance Sheets
(In thousands, except share data)
December 31,
2015
2014
Assets
Cash and due from banks
$
573,699

$
550,576

Interest-bearing cash and cash equivalents
2,069,900

1,925,266

Trading securities
122,404

188,700

Investment securities (fair value :  2015 – $629,159; 2014 – $673,626)
597,836

652,360

Available for sale securities
9,042,733

8,978,945

Fair value option securities
444,217

311,597

Restricted equity securities
273,684

141,494

Residential mortgage loans held for sale
308,439

304,182

Loans
15,941,154

14,208,037

Allowance for loan losses
(225,524
)
(189,056
)
Loans, net of allowance
15,715,630

14,018,981

Premises and equipment, net
306,490

273,833

Receivables
163,480

132,408

Goodwill
385,461

377,780

Intangible assets, net
43,909

34,376

Mortgage servicing rights
218,605

171,976

Real estate and other repossessed assets, net of allowance ( 2015 – $12,622 ; 2014 – $22,937)
30,731

101,861

Derivative contracts
586,270

361,874

Cash surrender value of bank-owned life insurance
303,335

293,978

Receivable on unsettled securities sales
40,193

74,259

Other assets
249,112

195,252

Total assets
$
31,476,128

$
29,089,698

Liabilities and Equity
Liabilities:
Noninterest-bearing demand deposits
$
8,296,888

$
8,066,357

Interest-bearing deposits:


Transaction
9,998,954

10,114,355

Savings
386,252

351,431

Time
2,406,064

2,608,716

Total deposits
21,088,158

21,140,859

Funds purchased
491,192

57,031

Repurchase agreements
722,444

1,187,489

Other borrowings
4,837,879

2,133,774

Subordinated debentures
226,350

347,983

Accrued interest, taxes and expense
119,584

120,211

Derivative contracts
581,701

354,554

Due on unsettled securities purchases
16,897

290,540

Other liabilities
124,284

121,051

Total liabilities
28,208,489

25,753,492

Shareholders' equity:


Common stock ($.00006 par value; 2,500,000,000 shares authorized; shares issued and outstanding: 2015 – 74,530,364; 2014 – 74,003,754)
4

4

Capital surplus
982,009

954,644

Retained earnings
2,704,121

2,530,837

Treasury stock (shares at cost: 2015 – 8,636,332 ; 2014 – 4,890,018)
(477,165
)
(239,979
)
Accumulated other comprehensive income
21,587

56,673

Total shareholders’ equity
3,230,556

3,302,179

Non-controlling interests
37,083

34,027

Total equity
3,267,639

3,336,206

Total liabilities and equity
$
31,476,128

$
29,089,698


See accompanying notes to consolidated financial statements.

81



Consolidated Statements of Changes in Equity
(In thousands)
Common Stock
Capital
Surplus
Retained
Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Total
Shareholders’
Equity
Non-
Controlling
Interests
Total Equity
Shares
Amount
Shares
Amount
Balance, December 31, 2012
72,415

$
4

$
859,278

$
2,137,541

4,088

$
(188,883
)
$
149,920

$
2,957,860

$
35,821

$
2,993,681

Net income



316,609




316,609

2,322

318,931

Other comprehensive loss






(175,543
)
(175,543
)

(175,543
)
Repurchase of common stock










Issuance of shares for equity compensation, net
748


30,029


217

(13,463
)

16,566


16,566

Tax effect from equity compensation, net


2,210





2,210


2,210

Share-based compensation


7,069





7,069


7,069

Cash dividends on common stock



(104,722
)



(104,722
)

(104,722
)
Capital calls and distributions, net








(3,219
)
(3,219
)
Balance, December 31, 2013
73,163

4

898,586

2,349,428

4,305

(202,346
)
(25,623
)
3,020,049

34,924

3,054,973

Net income



292,435




292,435

3,044

295,479

Other comprehensive income






82,296

82,296


82,296

Repurchase of common stock




200

(12,337
)

(12,337
)

(12,337
)
Issuance of shares for equity compensation, net
510


16,632


183

(12,160
)

4,472


4,472

Tax effect from equity compensation, net


8,258





8,258


8,258

Share-based compensation


9,680





9,680


9,680

Issuance of shares in settlement of deferred compensation, net
331


21,488


202

(13,136
)

8,352


8,352

Cash dividends on common stock



(111,026
)



(111,026
)

(111,026
)
Capital calls and distributions, net








(3,941
)
(3,941
)
Balance, December 31, 2014
74,004

4

954,644

2,530,837

4,890

(239,979
)
56,673

3,302,179

34,027

3,336,206

Net income



288,565




288,565

3,694

292,259

Other comprehensive income






(35,086
)
(35,086
)

(35,086
)
Repurchase of common stock




3,634

(229,540
)

(229,540
)

(229,540
)
Issuance of shares for equity compensation, net
526


14,357


112

(7,646
)

6,711


6,711

Tax effect from equity compensation, net


925





925


925

Share-based compensation


12,083





12,083


12,083

Cash dividends on common stock



(115,281
)



(115,281
)

(115,281
)
Sale of non-controlling interest







5,500

5,500

Capital calls and distributions, net








(6,138
)
(6,138
)
Balance, December 31, 2015
74,530

$
4

$
982,009

$
2,704,121

8,636

$
(477,165
)
$
21,587

$
3,230,556

$
37,083

$
3,267,639


See accompanying notes to consolidated financial statements.

82



Consolidated Statements of Cash Flows
(In thousands)

Year Ended
2015
2014
2013
Cash Flows From Operating Activities:
Net income
$
292,259

$
295,479

$
318,931

Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for credit losses
34,000


(27,900
)
Change in fair value of mortgage servicing rights
4,853

16,445

(22,720
)
Unrealized losses (gains) from derivative contracts
964

(6,495
)
16,256

Depreciation and amortization
65,982

56,032

53,261

Change in bank-owned life insurance
(9,304
)
(9,086
)
(10,155
)
Tax effect from equity compensation, net
(925
)
(8,258
)
(2,210
)
Share-based compensation
12,083

9,680

7,069

Net amortization of securities discounts and premiums
55,145

57,202

62,274

Net realized losses (gains) on financial instruments and other assets
(15,212
)
(1,362
)
(12,586
)
Net gain on mortgage loans held for sale
(75,780
)
(62,053
)
(84,403
)
Mortgage loans originated for sale
(6,372,956
)
(4,484,394
)
(4,081,390
)
Proceeds from sale of mortgage loans held for sale
6,446,659

4,441,819

4,254,151

Capitalized mortgage servicing rights
(79,546
)
(54,413
)
(49,431
)
Change in trading and fair value option securities
(69,298
)
(243,265
)
237,581

Change in receivables
(6,943
)
(7,103
)
(3,122
)
Change in other assets
(20,244
)
77,907

76,257

Change in accrued interest, taxes and expense
17,517

(115,772
)
18,192

Change in other liabilities
15,756

1,007

(13,735
)
Net cash provided by (used in) operating activities
295,010

(36,630
)
736,320

Cash Flows From Investing Activities:
Proceeds from sales of available for sale securities
1,600,380

2,664,740

2,436,093

Proceeds from maturities or redemptions of investment securities
72,664

63,258

143,445

Proceeds from maturities or redemptions of available for sale securities
1,542,517

1,635,533

2,650,045

Purchases of investment securities
(25,132
)
(44,723
)
(326,815
)
Purchases of available for sale securities
(3,300,601
)
(3,045,077
)
(4,287,146
)
Change in amount receivable on unsettled securities sales
34,066

(57,085
)
193,878

Loans originated, net of principal collected
(1,681,035
)
(1,346,995
)
(441,474
)
Net payments on derivative asset contracts
(156,419
)
(247,726
)
59,390

Proceeds from disposition of assets
195,760

273,271

229,405

Acquisitions, net of cash acquired
(18,098
)
(21,898
)
(7,500
)
Purchases of assets
(265,406
)
(307,318
)
(212,292
)
Net cash provided by (used in) investing activities
(2,001,304
)
(434,020
)
437,029

Cash Flows From Financing Activities:
Net change in demand deposits, transaction deposits and savings accounts
149,951

958,809

(637,734
)
Net change in time deposits
(202,652
)
(87,277
)
(271,999
)
Net change in other borrowed funds
2,547,688

511,776

(111,905
)
Repayment of subordinated debentures
(121,810
)


Change in amount due on unsettled security purchases
(273,643
)
244,800

(251,713
)
Issuance of common and treasury stock, net
6,711

4,472

16,566

Net change in derivative margin accounts
(43,226
)
84,365

51,646

Net payments or proceeds on derivative liability contracts
149,428

257,439

(64,724
)
Tax effect from equity compensation, net
925

8,258

2,210

Sale of non-controlling interests
5,500



Repurchase of common stock
(229,540
)
(12,337
)

Dividends paid
(115,281
)
(111,026
)
(104,722
)
Net cash provided by (used in) financing activities
1,874,051

1,859,279

(1,372,375
)
Net increase (decrease) in cash and cash equivalents
167,757

1,388,629

(199,026
)
Cash and cash equivalents at beginning of period
$
2,475,842

$
1,087,213

$
1,286,239

Cash and cash equivalents at end of period
$
2,643,599

$
2,475,842

$
1,087,213


83



Consolidated Statements of Cash Flows
(In thousands)

Year Ended
2015
2014
2013
Supplemental Cash Flow Information:
Cash paid for interest
$
66,091

$
65,721

$
69,830

Cash paid for taxes
$
101,991

$
67,199

$
132,176

Net loans and bank premises transferred to repossessed real estate and other assets
$
12,592

$
79,464

$
86,868

Residential mortgage loans guaranteed by U.S. government agencies that became eligible for repurchase during the period
$
123,383

$
144,630

$
127,572

Conveyance of other real estate owned guaranteed by U.S. government agencies
$
110,505

$
44,963

$
43,901

Issuance of shares in settlement of accrued executive compensation
$

$
8,352

$

See accompanying notes to consolidated financial statements.

84


Notes to Consolidated Financial Statements

( 1 ) Significant Accounting Policies

Basis of Presentation
The Consolidated Financial Statements of BOK Financial Corporation (“BOK Financial” or “the Company”) have been prepared in conformity with accounting principles generally accepted in the United States ("U.S. GAAP"), including interpretations of U.S. GAAP issued by federal banking regulators and general practices of the banking industry. The consolidated financial statements include the accounts of BOK Financial and its subsidiaries, principally BOKF, NA (“the Bank”), BOSC, Inc., The Milestone Group, Inc. and Cavanal Hill Investment Management, Inc. All significant intercompany transactions are eliminated in consolidation. Certain prior year amounts have been reclassified to conform to the current year presentation.

The consolidated financial statements include the assets, liabilities, non-controlling interests and results of operations of variable interest entities (“VIEs”) when BOK Financial is determined to be the primary beneficiary. Variable interest entities are generally defined as entities that either do not have sufficient equity to finance their activities without support from other parties or whose equity investors lack a controlling financial interest. See additional discussion of variable interest entities at Note 14 following.

Nature of Operations

BOK Financial, through its subsidiaries, provides a wide range of financial services to commercial and industrial customers, other financial institutions, municipalities, and consumers. These services include depository and cash management; lending and lease financing; mortgage banking; securities brokerage, trading and underwriting; and personal and corporate trust.

The Bank operates as Bank of Oklahoma primarily in Tulsa and Oklahoma City metropolitan areas of the state of Oklahoma and Bank of Texas primarily in the Dallas, Fort Worth and Houston metropolitan areas of the state of Texas. In addition, the Bank does business as Bank of Albuquerque in Albuquerque, New Mexico; Colorado State Bank and Trust in Denver, Colorado; Bank of Arizona in Phoenix, Arizona; Bank of Kansas City in Kansas City, Missouri/Kansas and Bank of Arkansas in Northwest Arkansas. The Bank also operates the TransFund electronic funds network.

Use of Estimates

Preparation of BOK Financial's consolidated financial statements requires management to make estimates of future economic activities, including loan collectability, prepayments and cash flows from customer accounts. These estimates are based upon current conditions and information available to management. Actual results may differ significantly from these estimates.

Acquisitions
Assets and liabilities acquired, including identifiable intangible assets, are recorded at fair value on the acquisition date. The purchase price includes consideration paid at closing and the estimated fair value of contingent consideration that will be paid in the future, subject to achieving defined performance criteria. Goodwill is recognized as the excess of the purchase price over the net fair value of assets acquired and liabilities assumed. The Consolidated Statements of Earnings include the results of operations from the acquisition date.

Goodwill and Intangible Assets
Goodwill and intangible assets generally result from business combinations and are evaluated for each of BOK Financial's reporting units for impairment annually or more frequently if conditions indicate impairment. The evaluation of possible impairment of goodwill and intangible assets involves significant judgment based upon short-term and long-term projections of future performance.


85


Reporting units are defined by the Company as significant lines of business within each operating segment. This definition is consistent with the manner in which the chief operating decision maker assesses the performance of the Company and makes decisions concerning the allocation of resources. The Company qualitatively assesses whether it is more likely than not that the fair value of the reporting units are less than their carrying value. This assessment includes consideration of relevant events and circumstances including but not limited to macroeconomic conditions, industry and market conditions, the financial and stock performance of the Company and other relevant factors.

If the Company concludes that it is not more likely than not that the fair value of a reporting unit is less than its carrying amount through the qualitative assessment, a quantitative Step 1 analysis is performed. The quantitative analysis compares the fair value of the reporting unit with its carrying value, including goodwill. The fair value of each reporting unit is estimated by the discounted future earnings method. Goodwill is considered impaired if the fair value of the reporting unit is less than the carrying value of the reporting unit, including goodwill. Impairment is measured through a detailed Step 2 assessment of the fair values for each asset and liability assigned to the reporting unit performed in a manner similar to a business combination.

Intangible assets are generally composed of customer relationships, naming rights, non-compete agreements and core deposit premiums. They are amortized using accelerated or straight-line methods, as appropriate, over the estimated benefit periods. These periods range from 3 years to 20 years . The net book values of identifiable intangible assets are evaluated for impairment when economic conditions indicate impairment may exist.
Cash Equivalents
Due from banks, funds sold (generally federal funds sold for one day), resell agreements (which generally mature within one to 30 days ) and investments in money market funds are considered cash equivalents.

Securities
Securities are identified as trading, investment (held to maturity) or available for sale at the time of purchase based upon the intent of management, liquidity and capital requirements, regulatory limitations and other relevant factors. Trading securities, which are acquired for profit through resale, are carried at fair value with unrealized gains and losses included in current period earnings. Investment securities are carried at amortized cost. Amortization is computed by methods that approximate level yield and is adjusted for changes in prepayment estimates. Securities identified as available for sale are carried at fair value. Unrealized gains and losses are recorded, net of deferred income taxes, as accumulated other comprehensive income in shareholders' equity. Available for sale securities are separately identified as pledged to creditors if the creditor has the right to sell or re-pledge the collateral.

The purchase or sale of securities is recognized on a trade date basis. Realized gains and losses on sales of securities are based upon specific identification of the security sold. A receivable or payable is recognized for subsequent transaction settlement. BOK Financial will periodically commit to purchase to-be-announced residential mortgage-backed securities. These commitments are carried at fair value if they are considered derivative contracts. Investment securities may be sold or transferred to trading or available for sale classification in certain limited circumstances specified in generally accepted accounting principles. Securities meeting certain criteria may also be transferred from the available for sale classification to the investment securities portfolio at fair value on the date of transfer. The unrealized gain or loss at the date of transfer is retained in accumulated other comprehensive income and in the carrying value of the investment securities portfolio. Such amounts are amortized over the estimated remaining life of the security as an adjustment to yield, offsetting the related amortization of the premium or accretion of the discount on the transferred securities.
On a quarterly basis, the Company performs separate evaluations of impaired debt investment and available for sale securities and equity available for sale securities to determine if the decline in fair value below the amortized cost is other-than-temporary.

For debt securities, management determines whether it intends to sell or if it is more likely than not that it will be required to sell impaired securities. This determination considers current and forecasted liquidity requirements and securities portfolio management. If the Company intends to sell or it is more likely than not that it will be required to sell the impaired debt security, a charge is recognized against earnings for the entire unrealized loss. For all impaired debt securities for which there is no intent or expected requirement to sell, the evaluation considers all available evidence to assess whether it is more likely than not that all amounts due would not be collected according to the security's contractual terms. Any expected credit loss due to the inability to collect all amounts due according to the security's contractual terms is recognized as a charge against earnings. Any remaining unrealized loss related to other factors would be recognized in other comprehensive income, net of taxes.

86


For equity securities, management evaluates various factors including cause, severity and duration of the decline in value of the security and prospects for recovery, as well as the Company's intent and ability not to sell the security until the fair value exceeds amortized cost. If an unrealized loss is determined to be other-than-temporary, a charge is recognized against earnings for the difference between the security's amortized cost and fair value.

BOK Financial has elected to carry certain non-trading securities at fair value with changes in fair value recognized in current period income. These securities are held with the intent that gains or losses will offset changes in the fair value of mortgage servicing rights or certain derivative instruments.

Restricted equity securities represent equity interests the Company is required to hold in the Federal Reserve Banks and Federal Home Loan Banks. Restricted equity securities are carried at cost as these securities do not have a readily determined fair value because ownership of these shares is restricted and they lack a market.

Derivative Instruments
Derivative instruments may be used by the Company as part of its interest rate risk management programs or may be offered to customers. All derivative instruments are carried at fair value. The determination of fair value of derivative instruments considers changes in interest rates, commodity prices and foreign exchange rates. Credit risk is also considered in determining fair value. Deterioration in the credit rating of customers or other counterparties reduces the fair value of asset contracts. Deterioration of our credit rating to below investment grade or the credit ratings of other counterparties could decrease the fair value of our derivative liabilities. Changes in fair value are generally reported in income as they occur.

Derivative instruments used to manage interest rate risk consist primarily of interest rate swaps. These contracts modify the interest income or expense of certain assets or liabilities. Amounts receivable from or payable to counterparties are reported in interest income or expense using the accrual method. Changes in fair value of interest rate swaps are reported in other operating revenue - gain (loss) on derivatives, net.

Derivative instruments may be designated as cash flow hedges of variable rate assets or liabilities, or of anticipated transactions. Changes in the fair value of derivative instruments designated as cash flow hedges are recorded in accumulated other comprehensive income to the extent they are effective. The amount recorded in other comprehensive income is reclassified to earnings in the same periods as the hedged cash flows impact earnings. The ineffective portion of changes in fair value is reported in current earnings.

If a derivative instrument that had been designated as a fair value hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the difference between the hedged items carrying value and its face amount is recognized into income over the remaining original hedge period. Similarly, if a derivative instrument that had been designated as a cash flow hedge is terminated or if the hedge designation is removed or deemed to no longer be effective, the amount remaining in accumulated other comprehensive income is reclassified to earnings in the same period as the hedged item.

BOK Financial also enters into mortgage loan commitments that are considered derivative contracts that have not been designated as hedging instruments. Forward sales contracts are used to hedge these mortgage loan commitments as well as mortgage loans held for sale. Mortgage loan commitments are carried at fair value based upon quoted prices. Changes in fair value of mortgage loans held for sale are reported in Other Operating Revenue - Mortgage Banking Revenue.

BOK Financial offers programs that permit its customers to manage various risks, including fluctuations in energy, cattle and other agricultural products, interest rates and foreign exchanges rates with derivative contracts. Derivative contracts are executed between the customers and BOK Financial. Offsetting contracts are executed between BOK Financial and other selected counterparties to minimize market risk from changes in commodity prices, interest rates or foreign exchange rates. The counterparty contracts are identical to customer contracts, except for a fixed pricing spread or fee paid to BOK Financial as profit and compensation for administrative costs and credit risk which is recognized over the life of the contracts and included in other operating revenue - brokerage and trading revenue in the Consolidated Statements of Earnings.

When bilateral netting agreements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by derivative contract by counterparty basis.


87


Derivative contracts may also require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met. In addition, derivative contracts executed with customers under Customer Risk Management Programs may be secured by non-cash collateral in conjunction with a credit agreement with that customer. Access to collateral, in the event of default is reasonably assured.

Loans
Loans are either secured or unsecured based on the type of loan and the financial condition of the borrower. Repayment is generally expected from cash flow or proceeds from the sale of selected assets of the borrower. BOK Financial is exposed to risk of loss on loans due to the borrower's financial difficulties, which may arise from any number of factors, including problems within the respective industry or local economic conditions. Access to collateral, in the event of borrower default, is reasonably assured through adherence to applicable lending laws and through sound lending standards and credit review procedures. Accounting policies for all loans, excluding residential loans guaranteed by U.S. government agencies, are as follows.

Interest is accrued at the applicable interest rate on the outstanding principal amount. Loans are placed on nonaccruing status when, in the opinion of management, full collection of principal or interest is uncertain. Internally risk graded loans are individually evaluated for nonaccruing status quarterly. Non-risk graded loans are generally placed on nonaccruing status when 90 days or more past due or within 60 days of being notified of the borrower's bankruptcy filing. Interest previously accrued but not collected is charged against interest income when the loan is placed on nonaccruing status. Payments received on nonaccruing loans are applied to principal or recognized as interest income, according to management's judgment as to the collectability of principal. Loans may be returned to accruing status when, in the opinion of management, full collection of principal and interest, including principal previously charged off, is probable based on improvements in the borrower's financial condition or a sustained period of performance.

Loans to borrowers experiencing financial difficulties may be modified in troubled debt restructurings ("TDRs"). All TDRs are classified as nonaccruing. Modifications generally consist of extension of payment terms or interest rate concessions and may result either voluntarily through negotiations with the borrower or involuntarily through court order. Generally, principal and accrued but unpaid interest is not voluntarily forgiven.

Performing loans may be renewed under the current collateral, debt service ratio and other underwriting standards. Nonaccruing loans may also be renewed and will remain classified as nonaccruing.

Occasionally, loans, other than residential mortgage loans, may be held for sale in order to manage credit concentration. These loans are carried at the lower of cost or fair value with gains or losses recognized in gain (loss) on assets.

All loans are charged-off when the loan balance or a portion of the loan balance is no longer supported by the paying capacity of the borrower or when the required cash flow is reduced in a TDR. The charge-off amount is determined through an evaluation of available cash resources and collateral value. Internally risk graded loans are evaluated quarterly and charge-offs are taken in the quarter in which the loss is identified. Non-risk graded loans that are past due between 60 days and 180 days , based on the loan product type, are charged off. Loans to borrowers whose personal obligation has been discharged through Chapter 7 bankruptcy proceedings are charged off within 60 days of notice of the bankruptcy filing, regardless of payment status.

Loan origination and commitment fees and direct loan acquisition and origination costs are deferred and amortized as an adjustment to yield over the life of the loan or over the commitment period, as applicable. Amortization does not anticipate loan prepayments. Net unamortized fees are recognized in full at time of payoff.

Qualifying residential mortgage loans guaranteed by U.S. government agencies have been sold into GNMA pools. Under certain performance conditions specified in government programs, the Company has the right, but not the obligation to repurchase loans from GNMA pools. These loans no longer qualify for sale accounting and are recognized in the Consolidated Balance Sheet. Guaranteed loans are considered to be impaired because we do not expect to receive all principal and interest based on the loan's contractual terms. The principal balance continues to be guaranteed, however, interest accrues at a curtailed rate as specified in the programs. The carrying value of these loans is reduced based on an estimate of expected cash flows discounted at the original note rate plus a liquidity spread. Guaranteed loans may be modified in TDRs in accordance with U.S. government agency guidelines. Interest continues to accrue at the modified rate. U.S. government guaranteed loans may either be resold into GNMA pools after a performance period specified by the programs or foreclosed and conveyed to the guarantors.


88


Loans are disaggregated into portfolio segments and further disaggregated into classes. The portfolio segment is the level at which the Company develops and documents a systematic method for determining its Allowance for Credits Losses. Classes are based on the risk characteristics of the loans and the Company's method for monitoring and assessing credit risk.

Allowance for Loan Losses and Accrual for Off-Balance Sheet Credit Risk

The appropriateness of the allowance for loan losses and accrual for off-balance sheet credit risk (collectively "Allowance for Credit Losses") is assessed by management quarterly based on an ongoing quarterly evaluation of the probable estimated losses inherent in the portfolio, including probable losses on outstanding loans and unused commitments to provide financing. A consistent well-documented methodology has been developed and is applied by an independent Credit Administration department to assure consistency across the Company.

The allowance for loan losses consists of specific allowances attributed to impaired loans that have not yet been charged down to amounts we expect to recover, general allowances based on estimated loss rates by loan class and nonspecific allowances based on factors that affect more than one portfolio segment. There were no changes to the methodology for estimating general allowances during 2015 or 2014 .

Loans are considered to be impaired when it becomes probable that BOK Financial will be unable to collect all amounts due according to the contractual terms of the loan agreements. Internally risk graded loans are evaluated individually for impairment. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded based on a quarterly evaluation of the borrowers' ability to repay. Certain commercial loans and most residential mortgage and consumer loans are small balance, homogeneous pools of loans that are not risk graded. Non-risk graded loans are identified as impaired based on performance status. Generally, non-risk graded loans 90 days or more past due, modified in a troubled debt restructuring or in bankruptcy are considered to be impaired.

Specific allowances for impaired loans are measured by an evaluation of estimated future cash flows discounted at the loan's initial effective interest rate or the fair value of collateral for certain collateral dependent loans. The fair value of real property held as collateral is generally based on third party appraisals that conform to Uniform Standards of Professional Appraisal Practice, less estimated selling costs. Appraised values are on an “as-is” basis and generally are not adjusted by the Company. Updated appraisals are obtained at least annually or more frequently if market conditions indicate collateral values may have declined. Collateral value of mineral rights is generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. The value of other collateral is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions. Collateral values and available cash resources that support impaired loans are evaluated quarterly. Historical statistics may be used as a practical way to estimate impairment in limited situations, such as when a collateral dependent loan is identified as impaired at the end of a reporting period until an appraisal of collateral value is received or a full assessment of future cash flows is completed. Estimates of future cash flows and collateral values require significant judgments and may be volatile.

General allowances for unimpaired loans are based on an estimated loss rate by loan class. The appropriate historical gross loss rate for each loan class is determined by the greater of the current loss rate based on the most recent twelve months or a ten-year average gross loss rate. Recoveries are not directly considered in the estimation of historical loss rates. Recoveries generally do not follow predictable patterns and are not received until well-after the charge-off date as a result of protracted legal actions. For risk graded loans, historical gross loss rates are adjusted for changes in risk grading. For each loan class, the current weighted average risk grade is compared to the long-term weighted average risk grade. This comparison determines whether credit risk in each loan class is increasing or decreasing. Historical loss rates are adjusted upward or downward in proportion to changes in average risk grading. General allowances for unimpaired loans also consider inherent risks identified for each loan class. Inherent risks consider loss rates that most appropriately represent the current credit cycle and other factors attributable to a specific loan class which have not yet been represented in the historical gross loss rates or risk grading. These factors include changes in commodity prices or engineering imprecision which may affect the value of reserves that secure our energy loan portfolio, construction risk that may affect commercial real estate loans, changes in regulations and public policy that may disproportionately impact health care loans and changes in loan products.

Nonspecific allowances are maintained for risks beyond factors specific to a particular portfolio segment or loan class. These factors include trends in the economy in our primary lending areas, concentration in large-balance loans and other relevant factors.

An accrual for off-balance sheet credit risk is included in Other liabilities. The appropriateness of the accrual is determined in the same manner as the allowance for loan losses.

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A provision for credit losses is charged against or credited to earnings in amounts necessary to maintain an appropriate Allowance for Credit Losses. Recoveries of loans previously charged off are added to the allowance when received.

Transfers of Financial Assets
BOK Financial regularly transfers financial assets as part of its mortgage banking activities and periodically may transfer other financial assets. Transfers are recorded as sales when the criteria for surrender of control are met.
The Company has elected to carry certain residential mortgage loans held for sale at fair value under the fair value option. Changes in fair value are recognized in net income as they occur. These loans are reported separately in the Consolidated Balance Sheets and changes in fair value are recorded in other operating revenue - mortgage banking revenue in the Consolidated Statements of Earnings.

Fair value of conforming residential mortgage loans that will be sold to U.S. government agencies is based on sales commitments or market quotes considered Level 2 inputs. Fair value of mortgage loans that are unable to be sold to U.S. government agencies is based on Level 3 inputs using quoted prices of loans that are sold in securitization transactions with a liquidity discount applied. The fair value is corroborated with an independent third party on at least an annual basis.

BOK Financial retains a repurchase obligation under underwriting representations and warranties related to residential mortgage loans transferred and generally retains the right to service the loans. The Company may incur a recourse obligation in limited circumstances. Separate accruals are recognized in Other liabilities in the Consolidated Balance Sheets for repurchase and recourse obligations. These reserves reflect the estimated amount of probable loss the bank will incur as a result of repurchasing a loan, indemnifications, and other settlement resolutions.

Repurchases of loans with an origination defect that are also credit impaired are considered collateral dependent and are initially recognized at net realizable value (appraised value less the cost to sell). The difference between unpaid principal balance and net realizable value is not accreted. Repurchases of loans with an origination defect that are not credit impaired are carried at fair value as of the repurchase date. Interest income continues to accrue on these loans and the discount is accreted over the estimated life of the loan.

The accrual for credit losses related to recourse loans for principal and interest is performed by Credit Administration and subject to oversight by the Finance/Credit Administration Allowance Committee while all other mortgage related accruals are reviewed monthly by the Mortgage Contingency Loss Accrual Committee which is subject to oversight by Finance.

The Company may also choose to purchase GNMA loans once certain mandated delinquency criteria are met. The loans that are eligible and are chosen to be repurchased are carried at fair value based on expected cash flow discounted using the average agency guaranteed debenture rates, average actual principal loss rates and liquidity premium.

The Company may also retain a residual interest in excess cash flows generated by the assets. All assets obtained, including cash, servicing rights and residual interests, and all liabilities incurred, including recourse obligations, are initially recognized at fair value, all assets transferred are derecognized and any gain or loss on the sale is recognized in earnings. Subsequently, servicing rights and residual interest are carried at fair value with changes in fair value recognized in earnings as they occur.


90


Real Estate and Other Repossessed Assets
Real estate and other repossessed assets are acquired in partial or total forgiveness of loans. These assets are carried at the lower of cost, which is determined by fair value at date of foreclosure less estimated disposal costs, or current fair value less estimated disposal costs. Decreases in fair value below cost are recognized as asset-specific valuation allowances which may be reversed when supported by future increases in fair value. Subsequent increases in fair value may be used to reduce the allowance but not below zero. Fair values of real estate are based on “as is” appraisals which are updated at least annually or more frequently for certain asset types or assets located in certain distressed markets. Fair values based on appraisals are generally considered to be based on significant other observable inputs. The Company also considers decreases in listing price and other relevant information in quarterly evaluations and reduces the carrying value of real estate and other repossessed assets when necessary. Fair values based on list prices and other relevant information are generally considered to be based on significant unobservable inputs. Additional costs incurred to complete real estate and other repossessed assets may increase the carrying value, up to current fair value based on “as completed” appraisals. The fair value of mineral rights included in repossessed assets are generally determined by our internal staff of engineers based on projected cash flows from proven oil and gas reserves under existing economic and operating conditions. The value of other repossessed assets is generally determined by our special assets staff based on projected liquidation cash flows under current market conditions. Income generated by these assets is recognized as received. Operating expenses are recognized as incurred. Gains or losses on sales of real estate and other repossessed assets are based on the cash proceeds received less the cost basis of the asset, net of any valuation allowances. The estimated disposal costs of real estate and other repossessed assets are evaluated by the Company on an annual basis based on actual results.

Premises and Equipment
Premises and equipment are carried at cost, including capitalized interest when appropriate, less accumulated depreciation and amortization. Depreciation and amortization are computed on a straight-line basis over the estimated useful lives of the assets or, for leasehold improvements, over the shorter of the estimated useful lives or remaining lease terms. Useful lives range from 5 years to 40 years for buildings and improvements, 3 years to 10 years for software and 3 years to 10 years for furniture and equipment. Construction in progress represents facilities construction and data processing systems projects underway that have not yet been placed into service. Depreciation and amortization begin once the assets are placed into service. Repair and maintenance costs, including software maintenance and enhancement costs, are charged to expense as incurred.

Premises no longer used by the Company are transferred to real estate and other repossessed assets. The transferred amount is the lower of cost less accumulated depreciation or fair value less estimated disposal costs as of the transfer date.

Rent expense for leased premises is recognized as incurred over the lease term. The effects of rent holidays, significant rent escalations and other adjustments to rent payments are recognized on a straight-line basis over the lease term.

Ongoing technology projects of significant size or length are reviewed at least annually for impairment.  The construction in progress account is reviewed for projects or components of projects that do not support the value of the asset being constructed.  Findings of obsolescence, duplicate effort or other conditions that do not support the recorded value are impaired, with the cost of the impaired components being charged to current-year earnings.

Mortgage Servicing Rights
Mortgage servicing rights may be purchased or may be recognized when mortgage loans are originated pursuant to an existing plan for sale or, if no such plan exists, when the mortgage loans are sold. All mortgage servicing rights are carried at fair value. Changes in the fair value are recognized in earnings as they occur.

There is no active market for trading in mortgage servicing rights after origination. A cash flow model is used to determine fair value. Key assumptions and estimates, including projected prepayment speeds and assumed servicing costs, earnings on escrow deposits, ancillary income and discount rates, used by this model are based on current market sources. Assumptions used to value mortgage servicing rights are considered significant unobservable inputs. A separate third party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. The prepayment model is updated daily for changes in market conditions and adjusted to better correlate with actual performance of BOK Financial's servicing portfolio. Fair value estimates from outside sources are received at least annually to corroborate the results of the valuation model.


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Federal and State Income Taxes
BOK Financial and its subsidiaries file consolidated tax returns. The subsidiaries provide for income taxes on a separate return basis and remit to BOK Financial amounts determined to be currently payable. BOK Financial is agent for its subsidiaries under the Company's tax sharing agreements and has no ownership rights to any refunds received for the benefit of its subsidiaries.

Current income tax expense or benefit is based on an evaluation that considers estimated taxable income, tax credits, and statutory federal and state income tax rates. The amount of current income tax expense or benefit recognized in any period may differ from amounts reported to taxing authorities. Annually, tax returns are filed with each jurisdiction where the Company conducts business and recognized current income tax expense or benefit is adjusted to the filed tax returns.

Deferred tax assets and liabilities are based upon the differences between the values of assets and liabilities as recognized in the financial statements and their related tax basis using enacted tax rates in effect for the year in which the differences are expected to be recovered or settled. A valuation allowance is provided when it is more likely than not that some portion of the entire deferred tax asset may not be realized based on taxes previously paid in net loss carry-back periods and other factors.

BOK Financial has unrecognized tax benefits, which are included in accrued current income taxes payable, for the uncertain portion of recorded tax benefits and related interest. These uncertainties result from the application of complex tax laws, rules, regulations and interpretations, primarily in state taxing jurisdictions. Unrecognized tax benefits are assessed quarterly and may be adjusted through current income tax expense in future periods based on changing facts and circumstances, completion of examinations by taxing authorities or expiration of a statute of limitations. Estimated penalties and interest on uncertain tax positions are recognized in income tax expense.

Employee Benefit Plans
BOK Financial sponsors a defined benefit cash balance pension plan (“Pension Plan”), qualified profit sharing plan (“Thrift Plan”) and employee health care plans. Pension Plan costs, which are based upon actuarial computations of current costs, are expensed annually. Unrecognized prior service cost and net gains or losses are amortized on a straight-line basis over a period not to exceed the average remaining service periods of the participants. Employer contributions to the Pension Plan are in accordance with Federal income tax regulations. Pension Plan benefits were curtailed as of April 1, 2006. No participants may be added to the Pension Plan and no additional service benefits will be accrued.

BOK Financial recognizes the funded status of its employee benefit plans. For a pension plan, the funded status is the difference between the fair value of plan assets and the projected benefit obligation measured as of the fiscal year-end date. Adjustments required to recognize the Pension Plan's net funded status are made through accumulated other comprehensive income, net of deferred income taxes.

Employer contributions to the Thrift Plan, which matches employee contributions subject to percentage and years of service limits, are expensed when incurred. BOK Financial recognizes the expense of health care benefits on the accrual method.

Share-Based Compensation Plans
BOK Financial awards stock options and non-vested common shares as compensation to certain officers. Compensation cost is generally fixed based on the grant date fair value of the award. The grant date fair value of stock options is based on the Black-Scholes option pricing model. Stock options generally have graded vesting over 7 years . Each tranche is considered a separate award for valuation and compensation cost recognition. Grant date fair value of non-vested shares is based on the current market value of BOK Financial common stock. Non-vested shares awarded prior to 2013 generally cliff vest in 5 years . Non-vested shares awarded since January 1, 2013 generally cliff vest in 3 years and are subject to a two year holding period after vesting. Shares awarded under the Executive Incentive Plan are subject to downward adjustment at the discretion of the Incentive Compensation Committee. Compensation cost of non-vested shares granted under the Executive Incentive Plan varies based on changes in the fair value of BOKF common shares.

Compensation cost is recognized as expense over the service period, which is generally the vesting period. Expense is reduced for estimated forfeitures over the vesting period and adjusted for actual forfeitures as they occur. Stock-based compensation awarded to certain officers has performance conditions that affect the number of awards granted. Compensation cost is adjusted based on the probable outcome of the performance conditions.


92


Excess tax benefits from share-based payments recognized in capital surplus are determined by the excess of tax benefits recognized over the tax effect of compensation cost recognized. Dividends on non-vested shares that are not subject to forfeiture are charged to dividends paid.

Other Operating Revenue
Fees and commission revenue is recognized at the time the related services are provided or products are sold and may be accrued when necessary. Accrued fees and commissions are reversed against revenue if amounts are subsequently deemed to be uncollectible. Revenue is recognized on a gross basis whenever we have primary responsibility and risk in providing the services or products to our customers and on a net basis whenever we act as a broker for products or services of others.

Brokerage and trading revenue includes changes in the fair value of securities held for trading purposes and derivatives held for customer risk management programs, including credit losses on trading securities and derivatives, commissions earned from the retail sale of securities, mutual funds and other financial instruments, and underwriting and financial advisory fees.

Transaction card revenue includes merchant discount fees, electronic funds transfer network fees and check card fees. Merchant discount fees represent fees paid by customers for account management and electronic processing of transactions. Merchant discount fees are recognized at the time the customer's transactions are processed or other services are performed. The Company also maintains the TransFund electronic funds transfer network for the benefit of its members, which includes the Bank. Electronic funds transfer fees are recognized as electronic transactions processed on behalf of its members. Check card fees represent interchange fees paid by a merchant bank for transactions processed from cards issued by the Company. Check card fees are recognized when transactions are processed.

Trust fees and commissions include revenue from asset management, custody, recordkeeping, investment advisory and administration services. Revenue is recognized on an accrual basis at the time the services are performed and may be based on either the fair value of the account or the service provided.

Deposit service charges and fees are recognized at least quarterly in accordance with a published deposit account agreements and disclosure statements for retail accounts or contractual agreements for commercial accounts. Item charges for overdraft or non-sufficient funds items are recognized as items are presented for payment. Account balance charges and activity fees are accrued monthly and collected in arrears. Commercial account activity fees may be offset by an earnings credit based on account balances.

Newly Adopted and Pending Accounting Pronouncements

Financial Accounting Standards Board ("FASB")

FASB Accounting Standards Update No. 2014-01, Accounting for Investments in Qualified Affordable Housing Projects ("ASU 2014-01")

On January 15, 2014, the FASB issued ASU 2014-01 to simplify the amortization method an entity uses and modify the criteria to elect a measurement and presentation alternative, including the simplified amortization method, for certain investments in qualified affordable housing projects. This alternative permits the entity to present the investment's performance net of the related tax benefits as part of income tax expense. ASU 2014-01 was effective for the Company for interim and annual periods beginning after December 15, 2014. Adoption of ASU 2014-01 affected income statement presentation, but otherwise did not have a material impact on the Company's consolidated financial statements.

FASB Accounting Standards Update No. 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans Upon Foreclosure ("ASU 2014-04")

On January 17, 2014, the FASB issued ASU 2014-04 to clarify when an entity is considered to have obtained physical possession (from an in-substance possession or foreclosure) of a residential real estate property collateralizing a mortgage loan. Upon physical possession of such real property, an entity is required to reclassify the nonperforming mortgage loan to other real estate owned. ASU 2014-04 was effective for the Company for interim and annual periods beginning after December 15, 2014. Adoption of ASU 2014-04 did not have a material impact on the Company's consolidated financial statements.


93


FASB Accounting Standards Update No. 2014-09, Revenue from Contracts with Customers ("ASU 2014-09")

On May 28, 2014, the FASB issued ASU 2014-09 to clarify the principles for recognizing revenue by providing a more robust framework that will give greater consistency and comparability in revenue recognition practices. In the new framework, an entity recognizes revenue in an amount that reflects the consideration to which the entity expects to be entitled in exchange for goods or services. The new model requires the identification of performance obligations included in contracts with customers, a determination of the transaction price and an allocation of the price to those performance obligations. The entity recognizes revenue when performance obligations are satisfied. ASU 2014-09 is effective for the Company for annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. The Company is evaluating the impact the adoption of ASU 2014-09 will have on the Company's financial statements.

FASB Accounting Standards Update No. 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans Upon Foreclosure ("ASU 2014-14")

On August 8, 2014, the FASB issued ASU 2014-14 to give greater consistency in the classification of government-guaranteed loans upon foreclosure. ASU 2014-14 applies to all loans that contain a government guarantee that is not separable from the loan or for which the creditor has both the intent and ability to recover a fixed amount under the guarantee by conveying the property to the guarantor. Upon foreclosure, the creditor should reclassify the mortgage loan to an other receivable that is separate from loans and should measure the receivable at the amount of the loan balance expected to be recovered from the guarantor. ASU 2014-14 was effective for the Company for interim and annual periods beginning after December 15, 2014. At January 1, 2015, approximately $50 million of real estate owned was reclassified from Real estate and other repossessed assets to Receivables on the balance sheet with adoption of ASC 2014-14.

FASB Accounting Standards Update No. 2014-16, Derivatives and Hedging (Topic 815): Determining Whether the Host Contract in a Hybrid Financial Instrument Issued in the Form of a Share is More Akin to Debt or to Equity ("ASU 2014-16")

On November 3, 2014, the FASB issued ASU 2014-16 to eliminate the use of different methods and reduce diversity under GAAP in the accounting for hybrid financial instruments issued in the form of a share. For hybrid financial instruments issued in the form of a share, an entity should determine the nature of the host contract by considering all stated and implied substantive terms and features of the hybrid financial instrument. The entity should determine the nature of the host contract by considering the economic characteristics and risks of the entire hybrid financial instrument, including the embedded derivative feature that is being evaluated for separate accounting from the host contract. For public business entities, the ASU is effective for annual periods beginning after December 15, 2015, and interim periods within those annual periods. Early adoption is permitted. Adoption of ASU 2014-16 is not expected to have a material impact on the Company's consolidated financial statements.

FASB Accounting Standards Update No. 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis ("ASU 2015-02")

On February 18, 2015, the FASB issued ASU 2015-02 to address concerns that current U.S. GAAP may require a reporting entity to consolidate another legal entity where the reporting entity's contractual rights do not give it the ability to act primarily on its own behalf, the reporting entity does not hold a majority of the legal entity's voting rights, or the reporting entity is not exposed to a majority of the legal entity's economic benefits or obligations. The amendments affect limited partnerships and similar legal entities, the evaluation of fees paid to a decision maker or a service provider as a variable interest, the effect of fee arrangements and related parties on the primary beneficiary determination, and certain investment funds. The ASU will be effective for periods beginning after December 15, 2015 for public companies. Early adoption is permitted, including adoption in an interim period. Adoption of ASU 2015-02 is not expected to have a material impact on the Company's consolidated financial statements.

FASB Accounting Standards Update No. 2015-07, Fair Value Measurements (Topic 820): Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent) ("ASU 2015-07")

On May 1, 2015, the FASB issued ASU 2015-07 to gain consistency within the categorization of the fair value hierarchy. The update removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient. It also removes the requirement to make certain disclosures for all investments that are eligible to be measured at fair value using the net asset value per share practical expedient. The ASU is effective for the Company for interim and annual periods beginning January 1, 2016 and should be applied retrospectively to all periods presented. Early adoption is permitted. Adoption of ASU 2015-07 is not expected to have a material impact on the Company's consolidated financial statements.

94



FASB Accounting Standards Update No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities ("ASU 2016-01")

On January 5, 2016, the FASB issued ASU 2016-01 over the recognition and measurement of financial assets and liabilities. The update requires equity investments, in general, to be measured at fair value with changes in fair value recognized in earnings. It also eliminates the requirement to disclose the methods and significant assumptions used to estimate the fair value for financial instruments measured at amortized cost, requires entities to use the exit price notion when measuring fair value, requires an entity to present separately in other comprehensive income the portion of the total change in fair value of a liability resulting from a change in the instrument-specific credit risk when the fair value option has been elected, requires separate presentation of financial assets and liabilities by measurement category and form on the balance sheet or accompanying notes, clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale securities in combination with the entity's other deferred tax assets, and simplifies the impairment assessment of equity investments without readily determinable fair values. The ASU is effective for the Company for interim and annual periods beginning after December 15, 2017. Upon adoption, unrealized gains and losses from equity securities will be reclassified from other comprehensive income to retained earnings. As of December 31, 2015, the Company had $3.2 million of unrealized gains and losses from equity securities in other comprehensive income.

FASB Accounting Standards Update No. 2016-02, Leases (Topic 842) ("ASU 2016-02")

On February 25, 2016, the FASB issued ASU 2016-02 to increase transparency and comparability by recognizing lease assets and liabilities on the balance and disclosing key information about leasing arrangements. The final guidance requires lessees to put most leases on their balance sheets and recognize expenses on their income statement, eliminates the current real estate-specific provisions, modifies the classification criteria and the accounting for sales-type and direct financing leases for lessors. The ASU is effective for the Company for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020. Early application of the amendments is permitted. The Company is evaluating the impact the adoption of ASU 2016-02 will have on the Company's financial statements.
( 2 ) Securities
Trading Securities
The fair value and net unrealized gain (loss) included in trading securities is as follows (in thousands):
December 31, 2015
December 31, 2014
Fair Value
Net Unrealized Gain (Loss)
Fair Value
Net Unrealized Gain (Loss)
U.S. government agency debentures
$
61,295

$
(71
)
$
85,092

$
(62
)
U.S. government agency residential mortgage-backed securities
10,989

17

31,199

269

Municipal and other tax-exempt securities
31,901

210

38,951

18

Other trading securities
18,219

(16
)
33,458

(38
)
Total trading securities
$
122,404

$
140

$
188,700

$
187


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Investment Securities
The amortized cost and fair values of investment securities are as follows (in thousands):

December 31, 2015
Amortized
Carrying
Fair
Gross Unrealized 2
Cost
Value 1
Value
Gain
Loss
Municipal and other tax-exempt securities
$
365,258

$
365,258

$
368,910

$
3,935

$
(283
)
U.S. government agency residential mortgage-backed securities – Other
26,721

26,833

27,874

1,063

(22
)
Other debt securities
205,745

205,745

232,375

26,689

(59
)
Total investment securities
$
597,724

$
597,836

$
629,159

$
31,687

$
(364
)
1
Carrying value includes $112 thousand of net unrealized gain which remains in Accumulated other comprehensive income (“AOCI”) in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio in 2011.
2
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.
December 31, 2014
Amortized
Carrying
Fair
Gross Unrealized 2
Cost
Value 1
Value
Gain
Loss
Municipal and other tax-exempt securities
$
405,090

$
405,090

$
408,344

$
4,205

$
(951
)
U.S. government agency residential mortgage-backed securities – Other
35,135

35,750

37,463

1,713


Other debt securities
211,520

211,520

227,819

16,956

(657
)
Total investment securities
$
651,745

$
652,360

$
673,626

$
22,874

$
(1,608
)
1
Carrying value includes $615 thousand of net unrealized gain which remains in AOCI in the Consolidated Balance Sheets related to certain securities transferred from the Available for Sale securities portfolio to the Investment securities portfolio in 2011.
2
Gross unrealized gains and losses are not recognized in AOCI in the Consolidated Balance Sheets.


96


The amortized cost and fair values of investment securities at December 31, 2015 , by contractual maturity, are as shown in the following table (dollars in thousands):
Less than
One Year
One to
Five Years
Six to
Ten Years
Over
Ten Years
Total
Weighted
Average
Maturity²
Municipal and other tax-exempt securities:
Carrying value
$
56,431

$
257,290

$
17,585

$
33,952

$
365,258

3.28

Fair value
56,505

258,212

17,748

36,445

368,910

Nominal yield¹
1.46
%
1.85
%
3.16
%
5.77
%
2.22
%
Other debt securities:





Carrying value
$
11,423

$
43,383

$
86,461

$
64,478

$
205,745

8.64

Fair value
11,594

46,662

98,535

75,584

232,375

Nominal yield
4.27
%
4.57
%
5.67
%
5.96
%
5.45
%
Total fixed maturity securities:





Carrying value
$
67,854

$
300,673

$
104,046

$
98,430

$
571,003

5.21

Fair value
68,099

304,874

116,283

112,029

601,285


Nominal yield
1.94
%
2.24
%
5.24
%
5.89
%
3.38
%

Residential mortgage-backed securities:






Carrying value




$
26,833

³

Fair value




27,874


Nominal yield 4




2.75
%

Total investment securities:






Carrying value




$
597,836


Fair value




629,159


Nominal yield




3.35
%

1
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2
Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalty.
3
The average expected lives of residential mortgage-backed securities were 4.1 years based upon current prepayment assumptions.
4
The nominal yield on residential mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary - Unaudited for current yields on the investment securities portfolio.


97


Available for Sale Securities

The amortized cost and fair value of available for sale securities are as follows (in thousands):
December 31, 2015
Amortized
Fair
Gross Unrealized 1
Cost
Value
Gain
Loss
OTTI ²
U.S. Treasury securities
$
1,000

$
995

$

$
(5
)
$

Municipal and other tax-exempt securities
56,681

56,817

873

(737
)

Residential mortgage-backed securities:





U.S. government agencies:





FNMA
3,156,214

3,187,215

41,502

(10,501
)

FHLMC
1,940,915

1,949,335

14,727

(6,307
)

GNMA
763,967

761,801

2,385

(4,551
)

Other





Total U.S. government agencies
5,861,096

5,898,351

58,614

(21,359
)

Private issue:





Alt-A loans
56,387

62,574

6,574


(387
)
Jumbo-A loans
71,724

76,544

5,260


(440
)
Total private issue
128,111

139,118

11,834


(827
)
Total residential mortgage-backed securities
5,989,207


6,037,469

70,448

(21,359
)
(827
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,919,044

2,905,796

5,396

(18,644
)

Other debt securities
4,400

4,151


(249
)

Perpetual preferred stock
17,171

19,672

2,501



Equity securities and mutual funds
17,121

17,833

752

(40
)

Total available for sale securities
$
9,004,624

$
9,042,733

$
79,970

$
(41,034
)
$
(827
)
1
Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2
Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.

98


December 31, 2014
Amortized
Fair
Gross Unrealized¹
Cost
Value
Gain
Loss
OTTI ²
U.S. Treasury securities
$
1,005

$
1,005

$

$

$

Municipal and other tax-exempt securities
63,018

63,557

1,280

(741
)

Residential mortgage-backed securities:




U.S. government agencies:





FNMA
3,932,200

3,997,428

71,200

(5,972
)

FHLMC
1,810,476

1,836,870

29,043

(2,649
)

GNMA
801,820

807,443

8,240

(2,617
)

Other
4,808

5,143

335



Total U.S. government agencies
6,549,304

6,646,884

108,818

(11,238
)

Private issue:





Alt-A loans
65,582

71,952

6,677


(307
)
Jumbo-A loans
88,778

94,005

5,584


(357
)
Total private issue
154,360

165,957

12,261


(664
)
Total residential mortgage-backed securities
6,703,664

6,812,841

121,079

(11,238
)
(664
)
Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,064,091

2,048,609

4,437

(19,919
)

Other debt securities
9,438

9,212

26

(252
)

Perpetual preferred stock
22,171

24,277

2,183

(77
)

Equity securities and mutual funds
18,603

19,444

871

(30
)

Total available for sale securities
$
8,881,990

$
8,978,945

$
129,876

$
(32,257
)
$
(664
)
1
Gross unrealized gain/loss recognized in AOCI in the consolidated balance sheet.
2
Amounts represent unrealized loss that remains in AOCI after an other-than-temporary credit loss has been recognized in income.



99


The amortized cost and fair values of available for sale securities at December 31, 2015 , by contractual maturity, are as shown in the following table (dollars in thousands):
Less than
One Year
One to
Five Years
Six to
Ten Years
Over
Ten Years 6
Total
Weighted
Average
Maturity 5
U.S. Treasury securities:
Amortized cost
$

$
1,000

$

$

$
1,000

2.04

Fair value

995



995

Nominal yield
%
0.87
%
%
%
0.87
%
Municipal and other tax-exempt securities:





Amortized cost
9,733

22,433

2,776

21,739

56,681

8.03

Fair value
9,779

22,982

2,832

21,224

56,817

Nominal yield¹
3.35
%
4.38
%
3.67
%
2.01
%
3.26
%
Commercial mortgage-backed securities:





Amortized cost

822,161

1,756,875

340,008

2,919,044

7.39

Fair value

818,007

1,749,403

338,386

2,905,796

Nominal yield
%
1.57
%
2.08
%
1.23
%
1.84
%
Other debt securities:
Amortized cost



4,400

4,400

31.66

Fair value



4,151

4,151

Nominal yield
%
%
%
1.71
%
1.71
%
Total fixed maturity securities:





Amortized cost
$
9,733

$
845,594

$
1,759,651

$
366,147

$
2,981,125

7.44

Fair value
9,779

841,984

1,752,235

363,761

2,967,759

Nominal yield
3.35
%
1.65
%
2.08
%
1.28
%
1.86
%
Residential mortgage-backed securities:





Amortized cost




$
5,989,207

2

Fair value




6,037,469

Nominal yield 4




1.95
%
Perpetual preferred stock. equity securities and mutual funds:






Amortized cost




$
34,292

³

Fair value




37,505


Nominal yield




%

Total available-for-sale securities:





Amortized cost




$
9,004,624


Fair value




9,042,733


Nominal yield




1.91
%

1
Calculated on a taxable equivalent basis using a 39% effective tax rate.
2
The average expected lives of mortgage-backed securities were 3.8 years based upon current prepayment assumptions.
3
Primarily common stock and preferred stock of corporate issuers with no stated maturity.
4
The nominal yield on mortgage-backed securities is based upon prepayment assumptions at the purchase date. Actual yields earned may differ significantly based upon actual prepayments. See Quarterly Financial Summary –– Unaudited following for current yields on available for sale securities portfolio.
5
Expected maturities may differ from contractual maturities, because borrowers may have the right to call or prepay obligations with or without penalty.
6
Nominal yield on municipal and other tax-exempt securities and other debt securities with contractual maturity dates over ten years are based on variable rates which generally are reset within 35 days .



100


Sales of available for sale securities resulted in gains and losses as follows (in thousands):
Year Ended December 31,
2015
2014
2013
Proceeds
$
1,600,380

$
2,664,740

2,436,093

Gross realized gains
15,849

24,923

25,711

Gross realized losses
(3,791
)
(23,384
)
(14,991
)
Related federal and state income tax expense
4,691

599

4,170


A summary of investment and available for sale securities that have been pledged as collateral for repurchase agreements, public trust funds on deposit and for other purposes, as required by law was as follows (in thousands):
December 31,
2015
2014
Investment:
Carrying value
$
231,033

$
63,495

Fair value
234,382

65,855

Available for sale:
Amortized cost
6,831,743

5,855,220

Fair value
6,849,524

5,893,972


The secured parties do not have the right to sell or re-pledge these securities.


101


Temporarily Impaired Securities as of December 31, 2015
(In thousands)
Number of Securities
Less Than 12 Months
12 Months or Longer
Total
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Investment:
Municipal and other tax-exempt securities
73

$
127,319

$
207

$
13,380

$
77

$
140,699

$
284

U.S. Agency residential mortgage-backed securities – Other
1

5,533

22



5,533

22

Other debt securities
11

1,082

41

1,715

18

2,797

59

Total investment securities
85

$
133,934

$
270

$
15,095

$
95

$
149,029

$
365


Number of Securities
Less Than 12 Months
12 Months or Longer
Total
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Available for sale:







Treasury
1

$
995

$
5

$

$

$
995

$
5

Municipal and other tax-exempt securities
20

$
9,909

$
27

$
11,664

$
710

$
21,573

$
737

Residential mortgage-backed securities:








U.S. government agencies:








FNMA
55

1,188,022

10,262

18,236

239

1,206,258

10,501

FHLMC
40

726,713

4,827

77,545

1,480

804,258

6,307

GNMA
15

364,919

1,951

102,109

2,600

467,028

4,551

Total U.S. agencies
110

2,279,654

17,040

197,890

4,319

2,477,544

21,359

Private issue 1 :









Alt-A loans
4



9,264

387

9,264

387

Jumbo-A loans
8



8,482

440

8,482

440

Total private issue
12



17,746

827

17,746

827

Total residential mortgage-backed securities
122

2,279,654

17,040

215,636

5,146

2,495,290

22,186

Commercial mortgage-backed securities guaranteed by U.S. government agencies
213

1,582,469

11,419

484,258

7,225

2,066,727

18,644

Other debt securities
2



4,151

249

4,151

249

Perpetual preferred stock







Equity securities and mutual funds
61

782

5

991

35

1,773

40

Total available for sale securities
419

$
3,873,809

$
28,496

$
716,700

$
13,365

$
4,590,509

$
41,861

1
Includes securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income.


102


Temporarily Impaired Securities as of December 31, 2014
(In thousands)
Number of Securities
Less Than 12 Months
12 Months or Longer
Total
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Investment:
Municipal and other tax- exempt securities
78

$
112,677

$
426

$
60,076

$
525

$
172,753

$
951

Other debt securities
84

31,274

637

761

20

32,035

657

Total investment securities
162

$
143,951

$
1,063

$
60,837

$
545

$
204,788

$
1,608


Number of Securities
Less Than 12 Months
12 Months or Longer
Total
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Fair
Value
Unrealized
Loss
Available for sale:









Municipal and other tax-exempt securities
22

$
10,838

$
12

$
12,176

$
729

$
23,014

$
741

Residential mortgage-backed securities:









U. S. government agencies:









FNMA
24

257,854

547

454,394

5,425

712,248

5,972

FHLMC
16

62,950

37

310,834

2,612

373,784

2,649

GNMA
5

8,550

12

128,896

2,605

137,446

2,617

Total U.S. agencies
45

329,354

596

894,124

10,642

1,223,478

11,238

Private issue 1 :









Alt-A loans
4

11,277

307



11,277

307

Jumbo-A loans
8



10,020

357

10,020

357

Total private issue
12

11,277

307

10,020

357

21,297

664

Total residential mortgage-backed securities
57

340,631

903

904,144

10,999

1,244,775

11,902

Commercial mortgage-backed securities guaranteed by U.S. government agencies
104

223,106

454

1,238,376

19,465

1,461,482

19,919

Other debt securities
2



4,150

252

4,150

252

Perpetual preferred stock
2

2,898

77



2,898

77

Equity securities and mutual funds
68



1,205

30

1,205

30

Total available for sale securities
255

$
577,473

$
1,446

$
2,160,051

$
31,475

$
2,737,524

$
32,921

1
Includes securities for which an unrealized loss remains in AOCI after an other-than-temporary credit loss has been recognized in income.

On a quarterly basis, the Company performs separate evaluations of impaired debt and equity investments and available for sale securities to determine if the unrealized losses are temporary.
For debt securities, management determines whether it intends to sell or if it is more-likely-than-not that it will be required to sell impaired securities. This determination considers current and forecasted liquidity requirements, regulatory and capital requirements and securities portfolio management. Based on this evaluation as of December 31, 2015 , we do not intend to sell any impaired available for sale securities before fair value recovers to our current amortized cost and it is more-likely-than-not that we will not be required to sell impaired securities before fair value recovers, which may be maturity.

Impairment of debt securities rated investment grade by all nationally-recognized rating agencies is considered temporary unless specific contrary information is identified. None of the debt securities rated investment grade were considered to be other-than-temporarily impaired at December 31, 2015 .

103


At December 31, 2015 , the composition of the Company’s investment and available for sale securities portfolios by the lowest current credit rating assigned by any of the three nationally-recognized rating agencies is as follows (in thousands):
U.S. Govt/GSE 1

AAA - AA
A - BBB
Below Investment Grade
Not Rated
Total
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Carrying
Value
Fair
Value
Investment:
Municipal and other tax-exempt
$

$

$
240,353

$
241,217

$
5,276

$
5,293

$

$

$
119,629

$
122,400

$
365,258

$
368,910

U.S. government agency mortgage-backed securities -- Other
26,833

27,874









26,833

27,874

Other debt securities


151,442

175,460





54,303

56,915

205,745

232,375

Total investment securities
$
26,833

$
27,874

$
391,795

$
416,677

$
5,276

$
5,293

$

$

$
173,932

$
179,315

$
597,836

$
629,159

U.S. Govt / GSE 1
AAA - AA
A - BBB
Below Investment Grade
Not Rated
Total
Amortized Cost
Fair
Value
Amortized Cost
Fair Value
Amortized Cost
Fair Value
Amortized Cost
Fair Value
Amortized Cost
Fair Value
Amortized Cost
Fair
Value
Available for Sale:












U.S. Treasury
$
1,000

$
995

$

$

$

$

$

$

$

$

$
1,000

$
995

Municipal and other tax-exempt


33,798

34,503

9,912

9,348



12,971

12,966

56,681

56,817

Residential mortgage-backed securities:














U. S. government agencies:














FNMA
3,156,214

3,187,215









3,156,214

3,187,215

FHLMC
1,940,915

1,949,335









1,940,915

1,949,335

GNMA
763,967

761,801









763,967

761,801

Other












Total U.S. government agencies
5,861,096

5,898,351









5,861,096

5,898,351

Private issue:














Alt-A loans






56,387

62,574



56,387

62,574

Jumbo-A loans






71,724

76,544



71,724

76,544

Total private issue






128,111

139,118



128,111

139,118

Total residential mortgage-backed securities
5,861,096

5,898,351





128,111

139,118



5,989,207

6,037,469

Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,919,044

2,905,796









2,919,044

2,905,796

Other debt securities


4,400

4,151







4,400

4,151

Perpetual preferred stock




6,406

7,429

10,765

12,243



17,171

19,672

Equity securities and mutual funds


4

478





17,117

17,355

17,121

17,833

Total available for sale securities
$
8,781,140

$
8,805,142

$
38,202

$
39,132

$
16,318

$
16,777

$
138,876

$
151,361

$
30,088

$
30,321

$
9,004,624

$
9,042,733

1
U.S. government and government sponsored enterprises are not rated by the nationally-recognized rating agencies as these securities are guaranteed by agencies of the U.S. government or government-sponsored enterprises.

104


At December 31, 2015 , the entire portfolio of privately issued residential mortgage-backed securities was rated below investment grade by at least one of the nationally-recognized rating agencies. The gross unrealized loss on these securities totaled $827 thousand . Ratings by the nationally-recognized rating agencies are subjective in nature and accordingly ratings can vary significantly amongst the agencies. Limitations generally expressed by the rating agencies include statements that ratings do not predict the specific percentage default likelihood over any given period of time and that ratings do not opine on expected loss severity of an obligation should the issuer default. As such, the impairment of securities rated below investment grade by at least one of the nationally-recognized rating agencies was evaluated to determine if we expect not to recover the entire amortized cost basis of the security. This evaluation was based on projections of estimated cash flows based on individual loans underlying each security using current and anticipated increases in unemployment and default rates, changes in housing prices and estimated liquidation costs at foreclosure.

The primary assumptions used in this evaluation were:

December 31,
2015
2014
Unemployment rate
Decreasing to 4.8% over the next 12 months and remain at 4.8% thereafter.
Held constant at 5.6% over the next 12 months and remain at 5.6% thereafter.
Housing price appreciation/depreciation
Starting with current depreciated housing prices based on information derived from the FHFA 1 , appreciating 3.5% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
Starting with current depreciated housing prices based on information derived from the FHFA1, appreciating 3.2% over the next 12 months, then flat for the following 12 months and then appreciating at 2% per year thereafter.
Estimated liquidation costs
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
Reflect actual historical liquidations costs observed on Jumbo and Alt-A residential mortgage loans in securities owned by the Company.
Discount rates
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
Estimated cash flows were discounted at rates that range from 2.00% to 6.25% based on our current expected yields.
1
Federal Housing Finance Agency

We also consider the current loan-to-value ratio and remaining credit enhancement as part of the assessment of the cash flows available to recover the amortized cost of the debt securities. Each factor is considered in the evaluation.

The Company calculates the current loan-to-value ratio for each mortgage-backed security using loan-level data. Current loan-to-value ratio is the current outstanding loan amount divided by an estimate of the current home value. The current home value is derived from FHFA data. FHFA provides historical information on home price depreciation at both the Metropolitan Statistical Area and state level. This information is matched to each loan to estimate the home price depreciation. Data is accumulated from the loan level to determine the current loan-to-value ratio for the security as a whole.

Remaining credit enhancement is the amount of credit enhancement available to absorb current projected losses within the pool of loans that support the security. The Company acquires the benefit of credit enhancement by investing in super-senior tranches for many of our residential mortgage-backed securities. Subordinated tranches held by other investors are specifically designed to absorb losses before the super-senior tranches which added an additional layer to the typical credit support for these types of bonds. Current projected losses consider depreciation of home prices based on FHFA data, estimated costs and additional losses to liquidate collateral and delinquency status of the individual loans underlying the security.

Credit loss impairment is recorded as a charge to earnings. Additional impairment based on the difference between the total unrealized loss and the estimated credit loss on these securities was charged against other comprehensive income, net of deferred taxes.

The Company recognized $157 thousand credit loss impairment on private-label residential mortgage-backed securities in earnings during 2015 . No credit loss impairment was recognized in earnings on private-label residential mortgage-backed securities in 2014 and $938 thousand was recognized in 2013 .


105


The Company recognized a $1.4 million of credit loss impairment in 2013 on certain below investment grade municipal securities based on an assessment of the issuer's on-going financial difficulties and bankruptcy filing in 2011. These below investment grade municipal securities were subsequently redeemed by the issuer during 2013.

A distribution of the amortized cost (after recognition of the other-than-temporary impairment), fair value and credit loss impairments recognized on our privately issued residential mortgage-backed securities is as follows (in thousands, except for number of securities):
Credit Losses Recognized
Year Ended
December 31, 2015
Life-to-date
Number of Securities
Amortized Cost
Fair Value
Number of
Securities
Amount
Number of Securities
Amount
Alt-A
14

$
56,387

$
62,574

4

$
157

14

$
36,284

Jumbo-A
30

71,724

76,544



29

18,220

Total
44

$
128,111

$
139,118

4

$
157

43

$
54,504


Impaired equity securities, including perpetual preferred stocks, are evaluated based on management's ability and intent to hold the securities until fair value recovers over periods not to exceed three years. The assessment of the ability and intent to hold these securities focuses on the liquidity needs, asset/liability management objectives and securities portfolio objectives. Factors considered when assessing recovery include forecasts of general economic conditions and specific performance of the issuer, analyst ratings and credit spreads for preferred stocks which have debt-like characteristics. The Company has evaluated the near-term prospects of the investments in relation to the severity and duration of the impairment and based on that evaluation has the ability and intent to hold these investments until a recovery in fair value. Based on this evaluation, $1.7 million of other-than-temporary impairment losses were recorded in earnings on equity securities during 2015 . All remaining impairment of equity securities was considered temporary at December 31, 2015 and December 31, 2014 . A $373 thousand other-than-temporary impairment loss related to equity securities was recorded in earnings in 2014 and no impairment losses were recognized on equity securities in 2013 .

The following is a tabular roll forward of the amount of credit-related OTTI recognized on available for sale debt securities in earnings (in thousands):
Year Ended December 31,
2015
2014
2013
Balance of credit-related OTTI recognized on available for sale debt, beginning of period
$
54,347

$
67,346

$
75,228

Additions for credit-related OTTI not previously recognized


618

Additions for increases in credit-related OTTI previously recognized when there is no intent to sell and no requirement to sell before recovery of amortized cost
157


320

Reductions for change in intent to hold before recovery


(3,589
)
Sales

(12,999
)
(5,231
)
Balance of credit-related OTTI recognized on available for sale debt securities, end of period
$
54,504

$
54,347

$
67,346

Fair Value Option Securities
Fair value option securities represent securities which the Company has elected to carry at fair value and separately identified on the Consolidated Balance Sheets with changes in the fair value recognized in earnings as they occur. Certain residential mortgage-backed securities issued by U.S. government agencies and derivative contracts are held as an economic hedge of the mortgage servicing rights.

The fair value and net unrealized gain (loss) included in Fair value option securities is as follows (in thousands):
December 31, 2015
December 31, 2014
Fair Value
Net Unrealized Gain (Loss)
Fair Value
Net Unrealized Gain (Loss)
U.S. agency residential mortgage-backed securities
$
444,217

$
(2,060
)
$
311,597

$
1,624


106


Restricted Equity Securities

Restricted equity securities include stock we are required to hold as members of the Federal Reserve system and the Federal Home Loan Banks ("FHLB"). Restricted equity securities are carried at cost as these securities do not have a readily determined fair value because ownership of these shares is restricted and they lack a market. A summary of restricted equity securities follows (in thousands):

December 31,
2015
2014
Federal Reserve Bank stock
$
36,148

$
35,018

Federal Home Loan Bank stock
237,365

106,476

Other
171


Total
$
273,684

$
141,494


107


( 3 ) Derivatives
The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2015 (in thousands):
Assets
Notional 1
Gross Fair Value
Netting Adjustments
Net Fair Value Before Cash Collateral
Cash Collateral
Fair Value Net of Cash Collateral
Customer risk management programs:
Interest rate contracts
To-be-announced residential mortgage-backed securities
$
14,583,052

$
43,270

$
(28,305
)
$
14,965

$

$
14,965

Interest rate swaps
1,332,044

31,744


31,744

(1,424
)
30,320

Energy contracts
470,613

83,045

(22,970
)
60,075

(18,606
)
41,469

Agricultural contracts
61,662

2,591

(1,158
)
1,433


1,433

Foreign exchange contracts
546,572

498,830


498,830

(4,140
)
494,690

Equity option contracts
137,278

3,780


3,780

(470
)
3,310

Total customer risk management programs
17,131,221

663,260

(52,433
)
610,827

(24,640
)
586,187

Interest rate risk management programs
22,000

83


83


83

Total derivative contracts
$
17,153,221

$
663,343

$
(52,433
)
$
610,910

$
(24,640
)
$
586,270

Liabilities
Notional¹
Gross Fair Value
Netting Adjustments
Net Fair Value Before Cash Collateral
Cash Collateral
Fair Value Net of Cash Collateral
Customer risk management programs:
Interest rate contracts
To-be-announced residential mortgage-backed securities
$
14,168,927

$
40,141

$
(28,305
)
$
11,836

$
(1,308
)
$
10,528

Interest rate swaps
1,332,044

31,928


31,928

(20,530
)
11,398

Energy contracts
463,703

81,869

(22,970
)
58,899


58,899

Agricultural contracts
61,657

2,579

(1,158
)
1,421

(1,248
)
173

Foreign exchange contracts
546,405

498,574


498,574

(1,951
)
496,623

Equity option contracts
137,278

3,780


3,780


3,780

Total customer risk management programs
16,710,014

658,871

(52,433
)
606,438

(25,037
)
581,401

Interest rate risk management programs
75,000

300


300


300

Total derivative contracts
$
16,785,014

$
659,171

$
(52,433
)
$
606,738

$
(25,037
)
$
581,701

1
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.

When bilateral netting agreements exist between the Company and its counterparties that create a single legal claim or obligation to pay or receive the net amount in settlement of the individual derivative contracts, the Company reports derivative assets and liabilities on a net by counterparty basis. Contracts may also require the Company to provide or receive cash margin as collateral for derivative assets and liabilities. Derivative assets and liabilities are reported net of cash margin when certain conditions are met.



108


The following table summarizes the fair values of derivative contracts recorded as “derivative contracts” assets and liabilities in the balance sheet at December 31, 2014 (in thousands):
Assets
Notional 1
Gross Fair Value
Netting Adjustments
Net Fair Value Before Cash Collateral
Cash Collateral
Fair Value Net of Cash Collateral
Customer risk management programs:
Interest rate contracts
To-be-announced residential mortgage-backed securities
$
13,313,615

$
94,719

$
(39,359
)
$
55,360

$

$
55,360

Interest rate swaps
1,165,568

35,405


35,405


35,405

Energy contracts
579,801

141,166

(48,624
)
92,542

(71,310
)
21,232

Agricultural contracts
47,657

1,904

(1,256
)
648


648

Foreign exchange contracts
290,965

238,395


238,395


238,395

Equity option contracts
194,960

10,834


10,834


10,834

Total customer risk management programs
15,592,566

522,423

(89,239
)
433,184

(71,310
)
361,874

Interest rate risk management programs






Total derivative contracts
$
15,592,566

$
522,423

$
(89,239
)
$
433,184

$
(71,310
)
$
361,874

Liabilities
Notional¹
Gross Fair Value
Netting Adjustments
Net Fair Value Before Cash Collateral
Cash Collateral
Fair Value Net of Cash Collateral
Customer risk management programs:
Interest rate contracts
To-be-announced residential mortgage-backed securities
$
13,471,880

$
91,949

$
(39,359
)
$
52,590

$
(52,290
)
$
300

Interest rate swaps
1,165,568

35,599


35,599

(18,717
)
16,882

Energy contracts
579,801

142,839

(48,624
)
94,215


94,215

Agricultural contracts
47,418

1,908

(1,256
)
652

(596
)
56

Foreign exchange contracts
290,856

238,118


238,118

(6,703
)
231,415

Equity option contracts
194,960

10,834


10,834


10,834

Total customer risk management programs
15,750,483

521,247

(89,239
)
432,008

(78,306
)
353,702

Interest rate risk management programs
47,000

852


852


852

Total derivative contracts
$
15,797,483

$
522,099

$
(89,239
)
$
432,860

$
(78,306
)
$
354,554

1
Notional amounts for commodity contracts are converted into dollar-equivalent amounts based on dollar prices at the inception of the contract.




109


The following summarizes the pre-tax net gains (losses) on derivative instruments and where they are recorded in the Consolidated Statement of Earnings (in thousands):
Year Ended December 31,
2015
2014
2013
Brokerage
and Trading Revenue
Gain (Loss)
on Derivatives, Net
Brokerage
and Trading
Revenue
Gain (Loss)
on Derivatives,
Net
Brokerage
and Trading
Revenue
Gain (Loss)
on Derivatives,
Net
Customer risk management programs:
Interest rate contracts
To-be-announced residential mortgage-backed securities
$
33,877

$

$
27,007

$

$
29,614

$

Interest rate swaps
2,066


2,494


2,991


Energy contracts
4,060


6,572


8,303


Agricultural contracts
123


146


357


Foreign exchange contracts
797


1,581


687


Equity option contracts






Total customer risk management programs
40,923


37,800


41,952


Interest rate risk management programs
(209
)
430


2,776


(4,367
)
Total derivative contracts
$
40,714

$
430

$
37,800

$
2,776

$
41,952

$
(4,367
)

At December 31, 2015 , BOK Financial had interest rate swaps with a notional value of $97 million used as part of the economic hedge of the change in the fair value of mortgage servicing rights.

As discussed in Note 7 , certain derivative contracts not designated as hedging instruments related to mortgage loan commitments and forward sales contracts are included in Residential mortgage loans held for sale on the Consolidated Balance Sheets. See Note 7 for additional discussion of notional, fair value and impact on earnings of these contracts. Forward sales contracts are not considered swaps under the Commodity and Futures Trading Commission final rules.

None of these derivative contracts have been designated as hedging instruments.
( 4 ) Loans and Allowances for Credit Losses

The portfolio segments of the loan portfolio are as follows (in thousands):

December 31, 2015
December 31, 2014
Fixed
Rate
Variable
Rate
Non-accrual
Total
Fixed
Rate
Variable
Rate
Non-accrual
Total
Commercial
$
1,850,548

$
8,325,559

$
76,424

$
10,252,531

$
1,736,976

$
7,345,167

$
13,527

$
9,095,670

Commercial real estate
627,678

2,622,354

9,001

3,259,033

721,513

1,988,080

18,557

2,728,150

Residential mortgage
1,598,992

216,661

61,240

1,876,893

1,698,620

202,771

48,121

1,949,512

Personal
91,816

460,418

463

552,697

102,865

331,274

566

434,705

Total
$
4,169,034

$
11,624,992

$
147,128

$
15,941,154

$
4,259,974

$
9,867,292

$
80,771

$
14,208,037

Accruing loans past due (90 days) 1



$
1,207




$
125

Foregone interest on nonaccrual loans
$
7,432

$
8,170

1
Excludes residential mortgage loans guaranteed by agencies of the U.S. government.


110


At December 31, 2015 , loans to businesses and individuals with collateral primarily located in Texas totaled $5.3 billion or 33% of the total loan portfolio. Loans to businesses and individuals with collateral primarily located in Oklahoma totaled $3.9 billion or 24% of our total loan portfolio. Loans for which the collateral location is not relevant, such as unsecured loans and reserve-based energy loans, are distributed by the borrower’s primary operating location. These geographic concentrations subject the loan portfolio to the general economic conditions within these areas. At December 31, 2014 , loans to businesses and individuals with collateral primarily located in Texas totaled $4.9 billion or 34% of the loan portfolio and loans to businesses and individuals with collateral primarily located in Oklahoma totaled $3.4 billion or 24% of the loan portfolio.

Commercial

Commercial loans represent loans for working capital, facilities acquisition or expansion, purchases of equipment and other needs of commercial customers primarily located within our geographical footprint. Commercial loans are underwritten individually and represent on-going relationships based on a thorough knowledge of the customer, the customer’s industry and market. While commercial loans are generally secured by the customer’s assets including real property, inventory, accounts receivable, operating equipment, interest in mineral rights and other property and may also include personal guarantees of the owners and related parties, the primary source of repayment of the loans is the on-going cash flow from operations of the customer’s business. Inherent lending risk is centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with commercial lending policies.

At December 31, 2015 , commercial loans with collateral primarily located in Texas totaled $3.5 billion or 34% of the commercial loan portfolio segment and commercial loans with collateral primarily located in Oklahoma totaled $2.5 billion or 24% of the commercial loan portfolio segment. The commercial loan portfolio segment is further divided into loan classes. The energy loan class totaled $3.1 billion or 19% of total loans, including $2.5 billion of outstanding loans to energy producers. Approximately 62% of committed production loans were secured by properties primarily producing oil and 38% are secured by properties producing natural gas. The services loan class totaled $2.8 billion or 17% of total loans. Approximately $1.2 billion of loans in the services category consisted of loans with individual balances of less than $10 million . Businesses included in the services class include governmental, financial & insurance, religious and not-for-profit, educational and professional/technical services. The healthcare loan class totaled $1.9 billion or 12% of total loans. The healthcare loan class consists primarily of loans for the development and operation of senior housing and care facilities, including independent living, assisted living and skilled nursing. Healthcare also includes loans to hospitals and other medical service providers.

At December 31, 2014 , commercial loans with collateral primarily located in Texas totaled $3.2 billion or 36% of the commercial loan portfolio segment and commercial loans with collateral primarily located in Oklahoma totaled $2.0 billion or 22% of the commercial loan portfolio segment. The energy loan class totaled $2.9 billion or 20% of total loans, including $2.5 billion of outstanding loans to energy producers. At December 31, 2014 , approximately 59% of committed production loans were secured by properties primarily producing oil and 41% were secured by properties producing natural gas. The services loan class totaled $2.4 billion or 17% of total loans. Approximately $1.2 billion of loans in the services category consisted of loans with individual balances of less than $10 million . The healthcare loan class totaled $1.5 billion or 10% of total loans.

Commercial Real Estate

Commercial real estate loans are for the construction of buildings or other improvements to real estate and property held by borrowers for investment purposes primarily within our geographical footprint. We require collateral values in excess of the loan amounts, demonstrated cash flows in excess of expected debt service requirements, equity investment in the project and a portion of the project already sold, leased or permanent financing already secured. The expected cash flows from all significant new or renewed income producing property commitments are stress tested to reflect the risks in varying interest rates, vacancy rates and rental rates. As with commercial loans, inherent lending risks are centrally monitored on a continuous basis from underwriting throughout the life of the loan for compliance with applicable lending policies.

At December 31, 2015 , 30% of commercial real estate loans are secured by properties primarily located in the Dallas and Houston areas of Texas. An additional 13% of commercial real estate loans are secured by properties located primarily in the Tulsa and Oklahoma City metropolitan areas of Oklahoma. At December 31, 2014 , 34% of commercial real estate loans were secured by properties in Texas, 16% of commercial real estate loans were secured by properties in Oklahoma.


111


Residential Mortgage and Personal

Residential mortgage loans provide funds for our customers to purchase or refinance their primary residence or to borrow against the equity in their home. Residential mortgage loans are secured by a first or second mortgage on the customer’s primary residence. Personal loans consist primarily of loans secured by the cash surrender value of insurance policies and marketable securities. It also includes direct loans secured by and for the purchase of automobiles, recreational and marine equipment as well as other unsecured loans. Residential mortgage and personal loans are made in accordance with underwriting policies we believe to be conservative and are fully documented. Credit scoring is assessed based on significant credit characteristics including credit history, residential and employment stability. Residential mortgage loans retained in the Company’s portfolio are primarily composed of various mortgage programs to support customer relationships including jumbo mortgage loans, non-builder construction loans and special loan programs for high net worth individuals and certain professionals. Jumbo loans may be fixed or variable rate and are fully amortizing. Jumbo loans generally conform to government sponsored entity standards, except that the loan size exceeds maximums required under these standards. These loans generally require a minimum FICO score of 720 and a maximum debt-to-income ratio (“DTI”) of 38% . Loan-to-value (“LTV”) ratios are tiered from 60% to 100% , depending on the market. Special mortgage programs include fixed and variable fully amortizing loans tailored to the needs of certain healthcare professionals. Variable rate loans are fully indexed at origination and may have fixed rates for three to ten years, then adjust annually thereafter.

At December 31, 2015 and 2014 , residential mortgage loans included $197 million and $206 million , respectively, of loans guaranteed by U.S. government agencies previously sold into GNMA mortgage pools. These loans either have been repurchased or are eligible to be repurchased by the Company when certain defined delinquency criteria are met. Although payments on these loans generally are past due more than 90 days, interest continues to accrue based on the government guarantee.

Home equity loans totaled $735 million at December 31, 2015 and $774 million at December 31, 2014 . At December 31, 2015 , 68% of the home equity loan portfolio was comprised of first lien loans and 32% of the home equity portfolio was comprised of junior lien loans. Junior lien loans were distributed 65% to amortizing term loans and 35% to revolving lines of credit. At December 31, 2014 , 69% of the home equity portfolio was comprised of first lien loans and 31% of the home equity loan portfolio was comprised of junior lien loans. Junior lien loans were distributed 71% to amortizing term loans and 29% to revolving lines of credit. Home equity loans generally require a minimum FICO score of 700 and a maximum DTI of 40%. The maximum loan amount available for our home equity loan products is generally $400 thousand . Revolving loans have a 5 year revolving period followed by 15 year term of amortizing repayments. Interest-only home equity loans may not be extended for any additional revolving time. All other home equity loans may be extended at management's discretion for an additional 5 year revolving term subject to an update of certain credit information.

At December 31, 2015 , 37% of residential mortgage loans are secured by properties located in Oklahoma, 29% of residential mortgage loans are secured by properties located in Texas, 12% of residential mortgage are secured by properties located in New Mexico and 9% of residential mortgage are secured by properties located in Colorado. At December 31, 2014 , 38% of residential mortgage loans were secured by properties in Oklahoma, 28% of residential mortgage were secured by properties in Texas 12% of residential mortgage loans are secured by properties in New Mexico and 10% of residential mortgage loans are secured by properties in Colorado.

Credit Commitments
Commitments to extend credit are agreements to lend to a customer as long as there is no violation of conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. At December 31, 2015 , outstanding commitments totaled $8.5 billion . Because some commitments are expected to expire before being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. BOK Financial uses the same credit policies in making commitments as it does loans.

The amount of collateral obtained, if deemed necessary, is based upon management’s credit evaluation of the borrower.


112


Standby letters of credit are conditional commitments issued to guarantee the performance of a customer to a third party. Because the credit risk involved in issuing standby letters of credit is essentially the same as that involved in extending loan commitments, BOK Financial uses the same credit policies in evaluating the creditworthiness of the customer. Additionally, BOK Financial uses the same evaluation process in obtaining collateral on standby letters of credit as it does for loan commitments. The term of these standby letters of credit is defined in each commitment and typically corresponds with the underlying loan commitment. At December 31, 2015 , outstanding standby letters of credit totaled $508 million . Commercial letters of credit are used to facilitate customer trade transactions with the drafts being drawn when the underlying transaction is consummated. At December 31, 2015 , outstanding commercial letters of credit totaled $7.9 million .

Allowances for Credit Losses

BOK Financial maintains an allowance for loan losses and an accrual for off-balance sheet credit risk. The accrual for off-balance sheet credit risk is maintained at a level that is appropriate to cover estimated losses associated with credit instruments that are not currently recognized as assets such as loan commitments, standby letters of credit or guarantees. As discussed in greater detail in Note 7 , the Company also has separate accruals related to off-balance sheet credit risk related to residential mortgage loans previously sold with full or partial recourse and for residential mortgage loans sold to government sponsored agencies under standard representations and warranties.

The allowance for loan losses consists of specific allowances attributed to impaired loans that have not yet been charged down to amounts we expect to recover, general allowances for unimpaired loans based on estimated loss rates by loan class and nonspecific allowances based on general economic conditions, concentration in loans with large balances and other relevant factors.

The activity in the allowance for loan losses and the accrual for off-balance sheet credit risk related to loan commitments and standby letters of credit for the year ended December 31, 2015 is summarized as follows (in thousands):
Commercial
Commercial Real Estate
Residential Mortgage
Personal
Nonspecific Allowance
Total
Allowance for loan losses:
Beginning balance
$
90,875

$
42,445

$
23,458

$
4,233

$
28,045

$
189,056

Provision for loan losses
43,464

(11,189
)
(3,004
)
2,167

2,081

33,519

Loans charged off
(6,734
)
(944
)
(2,205
)
(5,288
)

(15,171
)
Recoveries
2,729

11,079

1,260

3,052


18,120

Ending balance
$
130,334

$
41,391

$
19,509

$
4,164

$
30,126

$
225,524

Accrual for off-balance sheet credit risk:






Beginning balance
$
475

$
707

$
28

$
20

$

$
1,230

Provision for off-balance sheet credit risk
1,031

(554
)
2

2


481

Ending balance
$
1,506

$
153

$
30

$
22

$

$
1,711

Total provision for credit losses
$
44,495

$
(11,743
)
$
(3,002
)
$
2,169

$
2,081

$
34,000




113


The activity in the allowance for loan losses and the accrual for off-balance sheet credit risk related to loan commitments and standby letters of credit for the year ended December 31, 2014 is summarized as follows (in thousands):

Commercial
Commercial Real Estate
Residential Mortgage
Personal
Nonspecific Allowance
Total
Allowance for loan losses:
Beginning balance
$
79,180

$
41,573

$
29,465

$
6,965

$
28,213

$
185,396

Provision for loan losses
9,561

(4,084
)
(3,559
)
(892
)
(168
)
858

Loans charged off
(3,569
)
(2,047
)
(4,448
)
(6,168
)

(16,232
)
Recoveries
5,703

7,003

2,000

4,328


19,034

Ending balance
$
90,875

$
42,445

$
23,458

$
4,233

$
28,045

$
189,056

Accrual for off-balance sheet credit risk:






Beginning balance
$
119

$
1,876

$
90

$
3

$

$
2,088

Provision for off-balance sheet credit risk
356

(1,169
)
(62
)
17


(858
)
Ending balance
$
475

$
707

$
28

$
20

$

$
1,230

Total provision for credit losses
$
9,917

$
(5,253
)
$
(3,621
)
$
(875
)
$
(168
)
$



The activity in the allowance for loan losses and the accrual for off-balance sheet credit risk related to loan commitments and standby letters of credit for the year ended December 31, 2013 is summarized as follows (in thousands):

Commercial
Commercial Real Estate
Residential Mortgage
Personal
Nonspecific Allowance
Total
Allowance for loan losses:
Beginning balance
$
65,280

$
54,884

$
41,703

$
9,453

$
44,187

$
215,507

Provision for loan losses
12,747

(16,886
)
(8,043
)
83

(15,974
)
(28,073
)
Loans charged off
(6,335
)
(5,845
)
(5,753
)
(7,349
)

(25,282
)
Recoveries
7,488

9,420

1,558

4,778


23,244

Ending balance
$
79,180

$
41,573

$
29,465

$
6,965

$
28,213

$
185,396

Accrual for off-balance sheet credit risk:






Beginning balance
$
475

$
1,353

$
78

$
9

$

$
1,915

Provision for off-balance sheet credit risk
(356
)
523

12

(6
)

173

Ending balance
$
119

$
1,876

$
90

$
3

$

$
2,088

Total provision for credit losses
$
12,391

$
(16,363
)
$
(8,031
)
$
77

$
(15,974
)
$
(27,900
)





114


The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2015 is as follows (in thousands):

Collectively Measured
for Impairment
Individually Measured
for Impairment
Total
Recorded Investment
Related Allowance
Recorded Investment
Related Allowance
Recorded Investment
Related
Allowance
Commercial
$
10,176,107

$
114,027

$
76,424

$
16,307

$
10,252,531

$
130,334

Commercial real estate
3,250,032

41,373

9,001

18

3,259,033

41,391

Residential mortgage
1,815,653

19,441

61,240

68

1,876,893

19,509

Personal
552,234

4,164

463


552,697

4,164

Total
15,794,026

179,005

147,128

16,393

15,941,154

195,398

Nonspecific allowance





30,126

Total
$
15,794,026

$
179,005

$
147,128

$
16,393

$
15,941,154

$
225,524



The allowance for loan losses and recorded investment of the related loans by portfolio segment for each impairment measurement method at December 31, 2014 is as follows (in thousands):

Collectively Measured
for Impairment
Individually Measured
for Impairment
Total
Recorded Investment
Related Allowance
Recorded Investment
Related Allowance
Recorded Investment
Related
Allowance
Commercial
$
9,082,143

$
90,709

$
13,527

$
166

$
9,095,670

$
90,875

Commercial real estate
2,709,593

42,404

18,557

41

2,728,150

42,445

Residential mortgage
1,901,391

23,353

48,121

105

1,949,512

23,458

Personal
434,139

4,233

566


434,705

4,233

Total
14,127,266

160,699

80,771

312

14,208,037

161,011

Nonspecific allowance





28,045

Total
$
14,127,266

$
160,699

$
80,771

$
312

$
14,208,037

$
189,056




115


Credit Quality Indicators

The Company utilizes loan class and risk grading as primary credit quality indicators. Substantially all commercial and commercial real estate loans and certain residential mortgage and consumer loans are risk graded based on a quarterly evaluation of the borrowers’ ability to repay the loans. Certain commercial loans and most residential mortgage and consumer loans are small, homogeneous pools that are not risk graded.

The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at December 31, 2015 is as follows (in thousands):

Internally Risk Graded
Non-Graded
Total
Recorded Investment
Related Allowance
Recorded Investment
Related Allowance
Recorded Investment
Related
Allowance
Commercial
$
10,227,303

$
129,426

$
25,228

$
908

$
10,252,531

$
130,334

Commercial real estate
3,259,033

41,391



3,259,033

41,391

Residential mortgage
196,701

2,883

1,680,192

16,626

1,876,893

19,509

Personal
467,955

1,390

84,742

2,774

552,697

4,164

Total
14,150,992

175,090

1,790,162

20,308

15,941,154

195,398

Nonspecific allowance





30,126

Total
$
14,150,992

$
175,090

$
1,790,162

$
20,308

$
15,941,154

$
225,524

The allowance for loan losses and recorded investment of the related loans by portfolio segment for risk graded and non-risk graded loans at December 31, 2014 is as follows (in thousands):

Internally Risk Graded
Non-Graded
Total
Recorded Investment
Related Allowance
Recorded Investment
Related Allowance
Recorded Investment
Related
Allowance
Commercial
$
9,073,030

$
90,085

$
22,640

$
790

$
9,095,670

$
90,875

Commercial real estate
2,728,150

42,445



2,728,150

42,445

Residential mortgage
192,303

2,996

1,757,209

20,462

1,949,512

23,458

Personal
343,227

1,506

91,478

2,727

434,705

4,233

Total
12,336,710

137,032

1,871,327

23,979

14,208,037

161,011

Nonspecific allowance





28,045

Total
$
12,336,710

$
137,032

$
1,871,327

$
23,979

$
14,208,037

$
189,056


Loans are considered to be performing if they are in compliance with the original terms of the agreement which is consistent with the regulatory guideline of “pass.” Performing also includes loans considered to be “other loans especially mentioned” by regulatory guidelines. Other loans especially mentioned are in compliance with the original terms of the agreement but may have a weakness that deserves management’s close attention. Performing loans also include past due residential mortgages that are guaranteed by agencies of the U.S. government.

The risk grading process identified certain criticized loans as potential problem loans. These loans have a well-defined weakness (e.g. inadequate debt service coverage or liquidity or marginal capitalization; repayment may depend on collateral or other risk mitigation) that may jeopardize liquidation of the debt and represent a greater risk due to deterioration in the financial condition of the borrower. This is consistent with the regulatory guideline for “substandard.” Because the borrowers are still performing in accordance with the original terms of the loan agreements, these loans were not placed in nonaccruing status. Known information does, however, cause concern as to the borrowers’ continued compliance with current repayment terms. Nonaccruing loans represent loans for which full collection of principal and interest in accordance with the original terms of the loan agreements is uncertain. This is substantially the same criteria used to determine whether a loan is impaired and includes certain loans considered “substandard” and all loans considered “doubtful” by regulatory guidelines.

116



The following table summarizes the Company’s loan portfolio at December 31, 2015 by the risk grade categories (in thousands):
Internally Risk Graded
Non-Graded
Performing
Potential Problem
Nonaccruing
Performing
Nonaccruing
Total
Commercial:
Energy
$
2,906,357

$
129,782

$
61,189

$

$

$
3,097,328

Services
2,767,225

6,761

10,290



2,784,276

Healthcare
1,882,308


1,072



1,883,380

Wholesale/retail
1,412,780

6,365

2,919



1,422,064

Manufacturing
554,526

1,872

331



556,729

Other commercial and industrial
483,030


496

25,101

127

508,754

Total commercial
10,006,226

144,780

76,297

25,101

127

10,252,531

Commercial real estate:






Retail
794,754

426

1,319



796,499

Multifamily
744,299

6,512

274



751,085

Office
636,501

555

651



637,707

Industrial
563,093


76



563,169

Residential construction and land development
155,724

293

4,409



160,426

Other commercial real estate
347,864

11

2,272



350,147

Total commercial real estate
3,242,235

7,797

9,001



3,259,033

Residential mortgage:






Permanent mortgage
192,456

1,932

2,313

721,964

26,671

945,336

Permanent mortgages guaranteed by U.S. government agencies



175,037

21,900

196,937

Home equity



724,264

10,356

734,620

Total residential mortgage
192,456

1,932

2,313

1,621,265

58,927

1,876,893

Personal
467,811

14

130

84,409

333

552,697

Total
$
13,908,728

$
154,523

$
87,741

$
1,730,775

$
59,387

$
15,941,154



117


The following table summarizes the Company’s loan portfolio at December 31, 2014 by the risk grade categories (in thousands):
Internally Risk Graded
Non-Graded
Performing
Potential Problem
Nonaccruing
Performing
Nonaccruing
Total
Commercial:
Energy
$
2,843,093

$
15,919

$
1,416

$

$

$
2,860,428

Services
2,371,189

15,140

5,201



2,391,530

Healthcare
1,449,024

4,565

1,380



1,454,969

Wholesale/retail
1,427,725

8,141

4,149



1,440,015

Manufacturing
527,951

4,193

450



532,594

Other commercial and industrial
389,378

3,293

823

22,532

108

416,134

Total commercial
9,008,360

51,251

13,419

22,532

108

9,095,670

Commercial real estate:






Retail
662,335

628

3,926



666,889

Multifamily
691,053

13,245




704,298

Office
411,548

576

3,420



415,544

Industrial
428,817





428,817

Residential construction and land development
127,437

10,855

5,299



143,591

Other commercial real estate
362,375

724

5,912



369,011

Total commercial real estate
2,683,565

26,028

18,557



2,728,150

Residential mortgage:






Permanent mortgage
187,520

1,773

3,010

745,813

31,835

969,951

Permanent mortgages guaranteed by U.S. government agencies



202,238

3,712

205,950

Home equity



764,047

9,564

773,611

Total residential mortgage
187,520

1,773

3,010

1,712,098

45,111

1,949,512

Personal
343,041

19

167

91,079

399

434,705

Total
$
12,222,486

$
79,071

$
35,153

$
1,825,709

$
45,618

$
14,208,037






118


Impaired Loans

Loans are considered to be impaired when it is probable that the Company will not be able to collect all amounts due according to the contractual terms of the loan agreement. This includes all nonaccruing loans, all loans modified in a troubled debt restructuring and all loans repurchased from GNMA pools.

A summary of impaired loans follows (in thousands):
As of December 31, 2015
Year Ended
Recorded Investment
December 31, 2015
Unpaid
Principal
Balance
Total
With No
Allowance
With Allowance
Related Allowance
Average Recorded
Investment
Interest Income Recognized
Commercial:
Energy
$
63,910

$
61,189

$
18,330

$
42,859

$
16,115

$
31,303

$

Services
13,449

10,290

9,657

633

148

7,746


Healthcare
1,352

1,072

931

141

35

1,226


Wholesale/retail
8,582

2,919

2,907

12

9

3,534


Manufacturing
665

331

331



391


Other commercial and industrial
8,304

623

623



777


Total commercial
96,262

76,424

32,779

43,645

16,307

44,977


Commercial real estate:







Retail
1,923

1,319

1,319



2,622


Multifamily
1,192

274

274



137


Office
937

651

651



2,035


Industrial
76

76

76



38


Residential construction and land development
8,963

4,409

4,409



4,854


Other commercial real estate
8,363

2,272

2,113

159

18

4,092


Total commercial real estate
21,454

9,001

8,842

159

18

13,778


Residential mortgage:







Permanent mortgage
37,273

28,984

28,868

116

68

31,914

1,242

Permanent mortgage guaranteed by U.S. government agencies 1
202,984

196,937

196,937



196,827

7,814

Home equity
10,988

10,356

10,356



9,960


Total residential mortgage
251,245

236,277

236,161

116

68

238,701

9,056

Personal
489

463

463



515


Total
$
369,450

$
322,165

$
278,245

$
43,920

$
16,393

$
297,971

$
9,056

1
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At December 31, 2015 , $22 million of these loans are nonaccruing and $175 million are accruing based on the guarantee by U.S. government agencies.

Generally, no interest income is recognized on impaired loans until all principal balances, including amounts charged-off, have been recovered.


119



As of December 31, 2014
Year Ended
Recorded Investment
December 31, 2014
Unpaid
Principal
Balance
Total
With No
Allowance
With Allowance
Related Allowance
Average Recorded
Investment
Interest Income Recognized
Commercial:
Energy
$
1,444

$
1,416

$
1,416

$

$

$
1,638

$

Services
8,068

5,201

4,487

714

157

5,061


Healthcare
2,432

1,380

1,380



1,483


Wholesale/retail
9,457

4,149

4,117

32

9

5,559


Manufacturing
737

450

450



521


Other commercial and industrial
8,604

931

931



881


Total commercial
30,742

13,527

12,781

746

166

15,143


Commercial real estate:





Retail
5,406

3,926

3,926



4,392


Multifamily





3


Office
5,959

3,420

3,420



4,905


Industrial





126


Residential construction and land development
10,071

5,299

5,192

107

23

11,338


Other commercial real estate
11,954

5,912

5,739

173

18

8,939


Total commercial real estate
33,390

18,557

18,277

280

41

29,703


Residential mortgage:





Permanent mortgage
43,463

34,845

34,675

170

105

34,561

1,418

Permanent mortgage guaranteed by U.S. government agencies 1
212,684

205,950

205,950



194,017

8,342

Home equity
9,767

9,564

9,564



8,414


Total residential mortgage
265,914

250,359

250,189

170

105

236,992

9,760

Personal
584

566

566



893


Total
$
330,630

$
283,009

$
281,813

$
1,196

$
312

$
282,731

$
9,760

1
All permanent mortgage loans guaranteed by U.S. government agencies are considered impaired as we do not expect full collection of contractual principal and interest. At December 31, 2014 , $3.7 million of these loans are nonaccruing and $202 million are accruing based on the guarantee by U.S. government agencies.


120


Troubled Debt Restructurings

A summary of troubled debt restructurings ("TDRs") by accruing status as of December 31, 2015 is as follows (in thousands):
As of December 31, 2015
Recorded
Investment
Performing in Accordance With Modified Terms
Not
Performing in Accordance With Modified Terms
Specific
Allowance
Amounts Charged-Off During the Year Ended December 31, 2015
Nonaccruing TDRs:
Commercial:
Energy
$
2,304

$
2,304

$

$

$
928

Services
9,027

8,210

817

148


Healthcare
673

673




Wholesale/retail
2,758

2,706

52

9


Manufacturing
282

282




Other commercial and industrial
621

89

532



Total commercial
15,665

14,264

1,401

157

928

Commercial real estate:





Retail
1,319

942

377



Multifamily





Office
165

165




Industrial





Residential construction and land development
2,328

1,556

772



Other commercial real estate
920

478

442



Total commercial real estate
4,732

3,141

1,591



Residential mortgage:





Permanent mortgage
16,618

9,043

7,575

68

192

Permanent mortgage guaranteed by U.S. government agencies
11,136

139

10,997



Home equity
5,159

4,218

941


80

Total residential mortgage
32,913

13,400

19,513

68

272

Personal
324

297

27


11

Total nonaccruing TDRs
53,634

31,102

22,532

225

1,211

Accruing TDRs:
Residential mortgage:
Permanent mortgages guaranteed by U.S. government agencies
74,050

23,029

51,021



Total residential mortgage
74,050

23,029

51,021



Total accruing TDRs
74,050

23,029

51,021



Total TDRs
$
127,684

$
54,131

$
73,553

$
225

$
1,211



121


A summary of troubled debt restructurings by accruing status as of December 31, 2014 is as follows (in thousands):
As of December 31, 2014
Recorded
Investment
Performing in Accordance With Modified Terms
Not
Performing in Accordance With Modified Terms
Specific
Allowance
Amounts Charged-off During the Year Ended December 31, 2014
Nonaccruing TDRs:
Commercial:
Energy
$

$

$

$

$

Services
1,666

706

960

148


Healthcare





Wholesale/retail
3,381

3,284

97

9


Manufacturing
340

340



3,000

Other commercial and industrial
674

93

581



Total commercial
6,061

4,423

1,638

157

3,000

Commercial real estate:




Retail
3,600

2,432

1,168



Multifamily





Office
2,324


2,324



Industrial





Residential construction and land development
3,140

641

2,499

23

1,597

Other commercial real estate
1,647

1,647




Total commercial real estate
10,711

4,720

5,991

23

1,597

Residential mortgage:




Permanent mortgage
16,393

11,134

5,259

105

262

Permanent mortgage guaranteed by U.S. government agencies
1,597

179

1,418



Home equity
5,184

3,736

1,448


247

Total residential mortgage
23,174

15,049

8,125

105

509

Personal
419

253

166


1

Total nonaccuring TDRs
40,365

24,445

15,920

285

5,107

Accruing TDRs:
Residential mortgage:
Permanent mortgages guaranteed by U.S. government agencies
73,985

17,274

56,711



Total residential mortgage
73,985

17,274

56,711



Total accruing TDRs
73,985

17,274

56,711



Total TDRs
$
114,350

$
41,719

$
72,631

$
285

$
5,107



122


Troubled debt restructurings generally consist of interest rate concessions, payment stream concessions or a combination of concessions to distressed borrowers. The following table details the recorded balance of loans at December 31, 2015 by class that were restructured during the year ended December 31, 2015 by primary type of concession (in thousands):

Year Ended December 31, 2015
Accruing
Nonaccrual
Total
Payment Stream
Combination & Other
Total
Interest Rate
Payment Stream
Combination & Other
Total
Commercial:
Energy
$

$

$

$

$

$
2,304

$
2,304

$
2,304

Services





7,577

7,577

7,577

Healthcare



673



673

673

Wholesale/retail








Manufacturing








Other commercial and industrial





57

57

57

Total commercial



673


9,938

10,611

10,611

Commercial real estate:


Retail








Multifamily








Office








Industrial








Residential construction and land development




329


329

329

Other commercial real estate








Total commercial real estate




329


329

329

Residential mortgage:
Permanent mortgage




3,004

1,051

4,055

4,055

Permanent mortgage guaranteed by U.S. government agencies
17,717

10,384

28,101


1,264

1,837

3,101

31,202

Home equity



57

181

1,870

2,108

2,108

Total residential mortgage
17,717

10,384

28,101

57

4,449

4,758

9,264

37,365

Personal





115

115

115

Total
$
17,717

$
10,384

$
28,101

$
730

$
4,778

$
14,811

$
20,319

$
48,420



123


The following table details the recorded balance of loans by class that were restructured during the year ended December 31, 2014 by primary type of concession (in thousands):

Year Ended December 31, 2014
Accruing
Nonaccrual
Total
Payment Stream
Combination & Other
Total
Interest Rate
Payment Stream
Combination & Other
Total
Commercial:
Energy
$

$

$

$

$

$

$

$

Services








Healthcare








Wholesale/retail




3,261


3,261

3,261

Manufacturing








Other commercial and industrial




396

81

477

477

Total commercial




3,657

81

3,738

3,738

Commercial real estate:
Retail








Multifamily








Office








Industrial








Residential construction and land development








Other commercial real estate








Total commercial real estate








Residential mortgage:
Permanent mortgage




586

3,538

4,124

4,124

Permanent mortgage guaranteed by U.S. government agencies
15,386

17,293

32,679



1,059

1,059

33,738

Home equity





2,534

2,534

2,534

Total residential mortgage
15,386

17,293

32,679


586

7,131

7,717

40,396

Personal





76

76

76

Total
$
15,386

$
17,293

$
32,679

$

$
4,243

$
7,288

$
11,531

$
44,210



124


The following table summarizes, by loan class, the recorded investment at December 31, 2015 and 2014 , respectively of loans modified as TDRs within the previous 12 months and for which there was a payment default during the years ended December 31, 2015 and 2014 , respectively (in thousands):

Year Ended
December 31, 2015
December 31, 2014
Accruing
Nonaccrual
Total
Accruing
Nonaccrual
Total
Commercial:
Energy
$

$

$

$

$

$

Services






Healthcare






Wholesale/retail






Manufacturing






Other commercial and industrial

38

38


13

13

Total commercial

38

38


13

13

Commercial real estate:
Retail






Multifamily






Office






Industrial






Residential construction and land development

329

329




Other commercial real estate






Total commercial real estate

329

329




Residential mortgage:
Permanent mortgage

3,034

3,034


2,836

2,836

Permanent mortgage guaranteed by U.S. government agencies
27,223

3,101

30,324

29,585

1,047

30,632

Home equity

524

524


1,101

1,101

Total residential mortgage
27,223

6,659

33,882

29,585

4,984

34,569

Personal

13

13


25

25

Total
$
27,223

$
7,039

$
34,262

$
29,585

$
5,022

$
34,607


A payment default is defined as being 30 days or more past due. The table above includes loans that experienced a payment default during the period, but may be performing in accordance with the modified terms as of the balance sheet date.



125


Nonaccrual & Past Due Loans

Past due status for all loan classes is based on the actual number of days since the last payment was due according to the contractual terms of the loans.

A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of December 31, 2015 is as follows (in thousands):
Past Due
Current
30 to 89
Days
90 Days
or More
Nonaccrual
Total
Commercial:
Energy
$
3,033,504

$
2,635

$

$
61,189

$
3,097,328

Services
2,769,895

4,091


10,290

2,784,276

Healthcare
1,879,873

2,435


1,072

1,883,380

Wholesale/retail
1,418,396

49

700

2,919

1,422,064

Manufacturing
556,398



331

556,729

Other commercial and industrial
507,929

100

102

623

508,754

Total commercial
10,165,995

9,310

802

76,424

10,252,531

Commercial real estate:





Retail
795,180



1,319

796,499

Multifamily
742,697

8,114


274

751,085

Office
637,056



651

637,707

Industrial
563,093



76

563,169

Residential construction and land development
156,017



4,409

160,426

Other commercial real estate
347,498


377

2,272

350,147

Total commercial real estate
3,241,541

8,114

377

9,001

3,259,033

Residential mortgage:





Permanent mortgage
913,062

3,290


28,984

945,336

Permanent mortgages guaranteed by U.S. government agencies
33,653

30,383

111,001

21,900

196,937

Home equity
721,149

3,095

20

10,356

734,620

Total residential mortgage
1,667,864

36,768

111,021

61,240

1,876,893

Personal
551,533

693

8

463

552,697

Total
$
15,626,933

$
54,885

$
112,208

$
147,128

$
15,941,154



126


A summary of loans currently performing, loans past due and accruing and nonaccrual loans as of December 31, 2014 is as follows (in thousands):
Past Due
Current
30 to 89
Days
90 Days
or More
Nonaccrual
Total
Commercial:
Energy
$
2,857,082

$
1,930

$

$
1,416

$
2,860,428

Services
2,385,193

1,136


5,201

2,391,530

Healthcare
1,453,409

180


1,380

1,454,969

Wholesale/retail
1,435,866



4,149

1,440,015

Manufacturing
532,144



450

532,594

Other commercial and industrial
415,030

173


931

416,134

Total commercial
9,078,724

3,419


13,527

9,095,670

Commercial real estate:





Retail
662,963



3,926

666,889

Multifamily
704,298




704,298

Office
412,124



3,420

415,544

Industrial
428,817




428,817

Residential construction and land development
133,642

4,650


5,299

143,591

Other commercial real estate
362,529

570


5,912

369,011

Total commercial real estate
2,704,373

5,220


18,557

2,728,150

Residential mortgage:





Permanent mortgage
929,090

5,970

46

34,845

969,951

Permanent mortgages guaranteed by U.S. government agencies
26,691

23,558

151,989

3,712

205,950

Home equity
761,247

2,723

77

9,564

773,611

Total residential mortgage
1,717,028

32,251

152,112

48,121

1,949,512

Personal
433,590

547

2

566

434,705

Total
$
13,933,715

$
41,437

$
152,114

$
80,771

$
14,208,037


127


( 5 ) Premises and Equipment

Premises and equipment at December 31 are summarized as follows (in thousands):

December 31,
2015
2014
Land
$
72,612

$
71,371

Buildings and improvements
225,181

225,008

Software
142,476

120,010

Furniture and equipment
194,715

179,513

Construction in progress
39,886

21,805

Subtotal
674,870

617,707

Less accumulated depreciation
368,380

343,874

Total
$
306,490

$
273,833


Depreciation expense of premises and equipment was $34 million , $33 million and $30 million for the years ended December 31, 2015 , 2014 and 2013 , respectively.
( 6 ) Goodwill and Intangible Assets

On May 4, 2015, the Company acquired a majority voting interest in Heartland Food Products, LLC, a Kansas-based food product and restaurant equipment company. The cash purchase price for this acquisition was $18 million . The preliminary purchase price allocation included $14 million of identifiable intangible assets and $7.7 million of goodwill.

On February 28, 2014, the Company acquired GTRUST Financial Corporation ("GTRUST"), a Topeka-based independent trust and asset management company with approximately $631 million of assets under management or custody at the date of acquisition.

On April 30, 2014, the Company acquired MBM Advisors, a Houston-based independent, full service retirement and pension plan investment firm and an SEC registered investment adviser with approximately $1.3 billion of assets under management at the date of acquisition.

The purchase price for acquisitions in 2014 totaled approximately $27 million including $23 million paid in cash and $4 million of contingent consideration. The purchase price allocation included $14 million of identifiable intangible assets and $18 million of goodwill.

The pro-forma impact of these transactions was not material to the Company's consolidated financial statements.

On December 8, 2015, the Company announced the signing of a definitive purchase agreement with MBT Bancshares (“MBT”). MBT is headquartered in Kansas City, Mo. and is the parent company of Missouri Bank and Trust of Kansas City (“mobank”). mobank operates four banking branches in the Kansas City, Mo. area. At December 31, 2015, mobank has total assets of $655 million , total loans of $463 million , and total deposits of $611 million . Under terms of the definitive agreement, BOK Financial will pay $102.5 million in an all-cash deal for all outstanding shares of MBT stock, subject to certain conditions and potential adjustments. The transaction has been approved by the boards of directors of both companies and is expected to close in the third quarter of 2016, subject to customary closing conditions, including regulatory approval, and potential adjustments.

On January 5, 2016, the Company announced that it had entered into an asset purchase agreement with Weaver and Tidwell Financial Advisors LTD d/b/a Weaver Wealth Management, a registered investment advisor. The agreement includes hiring Weaver Wealth Management’s team and transitioning its wealth management clients to The Milestone Group, a wholly owned subsidiary of BOK Financial. Completion of the transaction is expected during the first quarter of 2016, upon regulatory approval. The acquisition will increase BOK Financial’s assets under management and administration by approximately $340 million in Texas.

128



On January 14, 2016, the Company signed an asset purchase agreement with E-Spectrum Advisors, a boutique energy investment banking firm based in Dallas that offers a broad range of oil and natural gas property sales and strategic advisory services.

The following table presents the original cost and accumulated amortization of intangible assets (in thousands):
Dec. 31,
2015
2014
Core deposit premiums
$
33,749

$
33,749

Less accumulated amortization
33,481

33,088

Net core deposit premiums
268

661

Other identifiable intangible assets
63,689

50,288

Less accumulated amortization
20,048

16,573

Net other identifiable intangible assets
43,641

33,715

Total intangible assets, net
$
43,909

$
34,376


Expected amortization expense for intangible assets that will continue to be amortized (in thousands):
Core
Deposit
Premiums
Other
Identifiable
Intangible Assets
Total
2016
$
247

$
3,967

$
4,214

2017
21

3,735

3,756

2018

3,078

3,078

2019

2,816

2,816

2020

2,816

2,816

Thereafter

27,229

27,229

$
268

$
43,641

$
43,909



129



The changes in the carrying value of goodwill by operating segment for the year ended December 31, 2015 are as follows (in thousands):
Commercial
Consumer
Wealth
Management
Total
Balance, December 31, 2013
Goodwill
$
268,942

$
39,251

$
51,794

$
359,987

Accumulated impairment losses

(228
)

(228
)
268,942

39,023

51,794

359,759

Goodwill acquired during 2014
421


17,600

18,021

Balance, December 31, 2014
Goodwill
269,363

39,251

69,394

378,008

Accumulated impairment losses

(228
)

(228
)
269,363

39,023

69,394

377,780

Goodwill acquired during 2015
7,681



7,681

Balance, December 31, 2015
Goodwill
277,044

39,251

69,394

385,689

Accumulated impairment losses

(228
)

(228
)
$
277,044

$
39,023

$
69,394

$
385,461


The annual goodwill evaluations for 2015 and 2014 did not indicate impairment for any reporting unit. Economic conditions did not indicate that impairment existed for any identifiable intangible assets and therefore no impairment evaluation was performed.
( 7 ) Mortgage Banking Activities

Residential Mortgage Loan Production

The Company originates, markets and services conventional and government-sponsored residential mortgage loans. Generally, conforming fixed rate residential mortgage loans are held for sale in the secondary market and non-conforming and adjustable-rate residential mortgage loans are held for investment. The volume of mortgage loans originated for sale and secondary market prices are the primary drivers of originating and marketing revenue.

Residential mortgage loan commitments are generally outstanding for 60 to 90 days, which represents the typical period from commitment to originate a residential mortgage loan to when the closed loan is sold to an investor. Residential mortgage loan commitments are subject to both credit and interest rate risk. Credit risk is managed through underwriting policies and procedures, including collateral requirements, which are generally accepted by the secondary loan markets. Exposure to interest rate fluctuations is partially managed through forward sales of residential mortgage-backed securities and forward sales contracts. These latter contracts set the price for loans that will be delivered in the next 60 to 90 days.


130


The unpaid principal balance of residential mortgage loans held for sale, notional amounts of derivative contracts related to residential mortgage loan commitments and forward contract sales and their related fair values included in Mortgage loans held for sale on the Consolidated Balance Sheets were (in thousands):
December 31, 2015
December 31, 2014
Unpaid Principal Balance/
Notional
Fair Value
Unpaid Principal Balance/
Notional
Fair Value
Residential mortgage loans held for sale
$
293,637

$
299,505

$
291,537

$
298,212

Residential mortgage loan commitments
601,147

8,134

627,505

9,971

Forward sales contracts
884,710

800

701,066

(4,001
)

$
308,439


$
304,182


No residential mortgage loans held for sale were 90 days or more past due or considered impaired as of December 31, 2015 or December 31, 2014 . No credit losses were recognized on residential mortgage loans held for sale for the years ended December 31, 2015 , 2014 and 2013 .

Mortgage banking revenue was as follows (in thousands):
Year Ended
2015
2014
2013
Production revenue:
Net realized gains on sales of mortgage loans
$
75,780

$
56,696

$
95,309

Net change in unrealized gain on mortgage loans held for sale
(784
)
5,357

(10,899
)
Net change in the fair value of mortgage loan commitments
(1,837
)
7,315

(10,077
)
Net change in the fair value of forward sales contracts
4,801

(8,307
)
5,212

Total production revenue
77,960

61,061

79,545

Servicing revenue
56,415

48,032

42,389

Total mortgage banking revenue
$
134,375

$
109,093

$
121,934


Mortgage production revenue includes gain (loss) on residential mortgage loans held for sale and changes in the fair value of derivative contracts not designated as hedging instruments related to residential mortgage loan commitments and forward sales contracts. Servicing revenue includes servicing fee income and late charges on loans serviced for others.

Residential Mortgage Servicing

The Company generally retains the right to service residential mortgage loans sold and may purchase mortgage servicing rights. The unpaid principal balance of loans serviced for others is the primary driver of servicing revenue.

The following represents a summary of mortgage servicing rights (Dollars in thousands):
December 31,
2015
2014
2013
Number of residential mortgage loans serviced for others
131,859

117,483

106,137

Outstanding principal balance of residential mortgage loans serviced for others
$
19,678,226

$
16,162,887

$
13,718,942

Weighted average interest rate
4.12
%
4.29
%
4.40
%
Remaining contractual term (in months)
300

296

292




131


Activity in capitalized mortgage servicing rights during the three years ended December 31, 2015 is as follows (in thousands):
Purchased
Originated
Total
Balance, December 31, 2012
$
12,976

$
87,836

$
100,812

Additions, net

49,431

49,431

Change in fair value due to loan runoff
(3,029
)
(16,601
)
(19,630
)
Change in fair value due to market changes
5,988

16,732

22,720

Balance, December 31, 2013
15,935

137,398

153,333

Additions, net

54,413

54,413

Change in fair value due to loan runoff
(2,357
)
(16,968
)
(19,325
)
Change in fair value due to market changes
(2,464
)
(13,981
)
(16,445
)
Balance, December 31, 2014
11,114

160,862

171,976

Additions, net

79,546

79,546

Change in fair value due to loan runoff
(2,645
)
(25,419
)
(28,064
)
Change in fair value due to market changes
1,442

(6,295
)
(4,853
)
Balance, December 31, 2015
$
9,911

$
208,694

$
218,605


Changes in the fair value of mortgage servicing rights due to market changes are included in Other operating revenue in the Consolidated Statements of Earnings. Changes in fair value due to loan runoff are included in Mortgage banking costs.

There is no active market for trading in mortgage servicing rights after origination. Fair value is determined by discounting the projected net cash flows. Significant assumptions used to determine fair value considered to be significant unobservable inputs were as follows:

December 31,
2015
2014
Discount rate – risk-free rate plus a market premium
10.11%
10.17%
Prepayment rate - based upon loan interest rate, original term and loan type
7.41% - 23.88%
7.70% - 30.44%
Loan servicing costs – annually per loan based upon loan type:
Performing loans
$63 - $105
$60 - $105
Delinquent loans
$150 - $500
$150 - $500
Loans in foreclosure
$650 - $4,250
$1,000 - $4,250
Escrow earnings rate – indexed to rates paid on deposit accounts with comparable average life
1.73%
1.77%



Stratification of the residential mortgage loan servicing portfolio and outstanding principal of loans serviced for others by interest rate at December 31, 2015 follows (in thousands):
< 4.00%
4.00% - 4.99%
5.00% - 5.99%
> 5.99%
Total
Fair value
$
104,302

$
93,090

$
16,474

$
4,739

$
218,605

Outstanding principal of loans serviced for others
9,419,078

7,897,323

1,586,885

774,940

19,678,226

Weighted average prepayment rate 1
7.41
%
8.55
%
12.04
%
23.88
%
8.89
%
1
Annual prepayment estimates based upon loan interest rate, original term and loan type. Weighted average prepayment rate is determined by weighting the prepayment speed for each loan by its unpaid principal balance.

Changes in primary residential mortgage interest rates directly affect the prepayment speeds used in valuing our mortgage servicing rights. A separate third party model is used to estimate prepayment speeds based on interest rates, housing turnover rates, estimated loan curtailment, anticipated defaults and other relevant factors. The prepayment model is updated daily for changes in market conditions and adjusted to better correlate with actual performance of BOK Financial’s servicing portfolio.


132


The interest rate sensitivity of our mortgage servicing rights net of securities and derivative contracts held as an economic hedge is modeled over a range of +/- 50 basis points. At December 31, 2015 , a 50 basis point increase in mortgage interest rates is expected to increase the fair value of our mortgage servicing rights, net of economic hedge by $809 thousand . A 50 basis point decrease in mortgage interest rates is expected to decrease the fair value of our mortgage servicing rights, net of economic hedge by $4.1 million . In the model, changes in the value of servicing rights due to changes in interest rates assume stable relationships between residential mortgage rates and prepayment speeds. Changes in market conditions can cause variations from these assumptions. These factors and others may cause changes in the value of our mortgage servicing rights to differ from our expectations.

The aging status of our mortgage loans serviced for others by investor at December 31, 2015 follows (in thousands):
Past Due
Current
30 to 59
Days
60 to 89
Days
90 Days or More
Total
FHLMC
$
6,429,145

$
37,962

$
12,553

$
24,373

$
6,504,033

FNMA
6,723,183

35,813

5,128

19,930

6,784,054

GNMA
5,688,272

147,499

47,971

18,975

5,902,717

Other
477,052

5,932

970

3,468

487,422

Total
$
19,317,652

$
227,206

$
66,622

$
66,746

$
19,678,226


The Company has off-balance sheet credit risk related to residential mortgage loans sold to U.S. government agencies with recourse prior to 2008 under various community development programs. These loans consist of first lien, fixed-rate residential mortgage loans underwritten to standards approved by the agencies including full documentation and originated under programs available only for owner-occupied properties. However, these loans have a higher risk of delinquency and loss given default than traditional residential mortgage loans. The Company no longer sells residential mortgage loans with recourse other than obligations under standard representations and warranties. The recourse obligation relates to loan performance for the life of the loan and the Company is obligated to repurchase the loan at the time of foreclosure for the unpaid principal balance plus unpaid interest. The principal balance of residential mortgage loans sold subject to recourse obligations totaled $155 million at December 31, 2015 and $180 million at December 31, 2014 . At December 31, 2015 , approximately 3% of the loans sold with recourse with an outstanding principal balance of $4.5 million were either delinquent more than 90 days, in bankruptcy or in foreclosure and 6% with an outstanding balance of $8.6 million were past due 30 to 89 days. A separate accrual for these off-balance sheet commitments is included in Other liabilities in the Consolidated Balance Sheets. The provision for credit losses on loans sold with recourse is included in Mortgage banking costs in the Consolidated Statements of Earnings.

The activity in the accrual for losses on loans sold with recourse included in Other liabilities in the Consolidated Balance Sheets is summarized as follows (in thousands):
Year Ended
2015
2014
2013
Beginning balance
$
7,299

$
9,562

$
13,158

Provision for recourse losses
(982
)
354

517

Loans charged off, net
(1,668
)
(2,617
)
(4,113
)
Ending balance
$
4,649

$
7,299

$
9,562


The Company also has off-balance sheet obligations to repurchase or provide indemnification for residential mortgage loans sold to government sponsored entities due to standard representations and warranties made under contractual agreements. The Company has established an accrual for credit losses related to potential loan repurchases under representations and warranties that is included in Other liabilities in the Consolidated Balance Sheets and in Mortgage banking costs in the Consolidated Statements of Earnings. For 2015 , the Company has repurchased 83 loans from the agencies for $12.9 million and recognized $219 thousand of related losses. In addition, the Company has paid indemnification for 4 loans and recognized $1 thousand of related losses during 2015 .


133


A summary of unresolved deficiency requests from the agencies follows (in thousands, except for number of unresolved deficiency requests):
December 31,
2015
2014
Number of unresolved deficiency requests
198

186

Aggregate outstanding principal balance subject to unresolved deficiency requests
$
15,624

$
15,328

Unpaid principal balance subject to indemnification by the Company
4,365

4,047


The activity in the accruals for mortgage losses is summarized as follows (in thousands).
December 31,
2015
2014
Beginning balance
$
11,868

$
12,716

Provision for losses
391

7,200

Charge-offs, net
(4,527
)
(8,048
)
Ending balance
$
7,732

$
11,868


134



( 8 ) Deposits
Interest expense on deposits is summarized as follows (in thousands):
Year Ended December 31,
2015
2014
2013
Transaction deposits
$
8,821

$
9,757

$
11,155

Savings
383

401

442

Time:
Certificates of deposits under $100,000
11,894

14,278

16,234

Certificates of deposits $100,000 and over
10,643

11,878

12,273

Other time deposits
12,429

14,369

15,460

Total time
34,966

40,525

43,967

Total
$
44,170

$
50,683

$
55,564

The aggregate amounts of time deposits in denominations of $250,000 or more at December 31, 2015 and 2014 were $ 905 million and $ 994 million , respectively.

Time deposit maturities are as follows: 2016 – $ 1.4 billion , 2017 – $ 341 million , 2018 – $ 201 million , 2019 – $ 78 million , 2020 – $ 94 million and $ 284 million thereafter.

At December 31, 2015 and 2014 , the Company had $358 million and $334 million , respectively, in fixed rate, brokered certificates of deposits. The weighted-average interest rate paid on these certificates was 1.48% in 2015 and 2.59% in 2014 .

The aggregate amount of overdrawn transaction deposits that have been reclassified as loan balances was $ 5.3 million at December 31, 2015 and $ 6.2 million at December 31, 2014 .

135



( 9 ) Other Borrowings
Information relating to other borrowings is summarized as follows (dollars in thousands):

As of
Year Ended Year Ended
December 31, 2015
December 31, 2015
Balance
Rate
Average Balance
Rate
Maximum
Outstanding
At Any
Month End
Parent Company and Other Non-Bank Subsidiaries:
Other
$

$

%
$

Total Parent Company and Other Non-Bank Subsidiaries


%
Subsidiary Bank:
Funds purchased
491,192

0.15
%
73,219

0.09
%
491,192

Repurchase agreements
722,444

0.02
%
623,921

0.04
%
1,008,144

Other borrowings:
Federal Home Loan Bank advances
4,800,000

0.48
%
4,921,739

0.28
%
5,000,000

GNMA repurchase liability
19,478

4.75
%
16,668

4.95
%
19,478

Other
18,402

2.70
%
18,768

2.35
%
26,058

Total other borrowings
4,837,880

4,957,175

0.33
%
Subordinated debentures
226,350

1.05
%
226,332

1.84
%
348,076

Total subsidiary bank
6,277,866

5,880,647

0.36
%
Total other borrowed funds
$
6,277,866

$
5,880,647

0.36
%

As of
Year Ended Year Ended
December 31, 2014
December 31, 2014
Parent Company and Other Non-Bank Subsidiaries:
Balance
Rate
Average Balance
Rate
Maximum
Outstanding
At Any
Month End
Other
$

$

%
$

Total Parent Company and Other Non-Bank Subsidiaries


%
Subsidiary Bank:
Funds purchased
57,031

0.05
%
494,220

0.07
%
1,548,676

Repurchase agreements
1,187,489

0.04
%
928,767

0.06
%
1,187,489

Other borrowings:
Federal Home Loan Bank advances
2,103,400

0.25
%
1,894,966

0.24
%
3,453,400

GNMA repurchase liability
14,298

5.05
%
17,343

5.20
%
24,980

Other
16,076

2.73
%
16,433

2.32
%
16,582

Total other borrowings
2,133,774

1,928,742

0.35
%
Subordinated debentures
347,983

2.35
%
347,892

2.50
%
347,983

Total subsidiary bank
3,726,277

3,699,621

0.43
%
Total other borrowed funds
$
3,726,277

$
3,699,621

0.43
%


136



As of
Year Ended Year Ended
December 31, 2013
December 31, 2013
Balance
Rate
Average Balance
Rate
Maximum
Outstanding
At Any
Month End
Parent Company and Other Non-Bank Subsidiaries:
Other
$

$
326

%
$

Total Parent Company and Other Non-Bank Subsidiaries

326

%
Subsidiary Bank:
Funds purchased
868,081

0.04
%
866,062

0.10
%
997,536

Repurchase agreements
813,454

0.05
%
811,996

0.06
%
881,033

Other borrowings:
Federal Home Loan Bank advances
1,005,650

0.19
%
1,661,424

0.20
%
2,451,197

GNMA repurchase liability
18,113

5.50
%
15,741

5.43
%
21,055

Other
16,590

2.73
%
16,502

2.54
%
17,092

Total other borrowings
1,040,353

1,693,667

0.31
%
Subordinated debentures
347,802

2.35
%
347,717

2.51
%
347,802

Total subsidiary bank
3,069,690

3,719,442

0.40
%
Total other borrowed funds
$
3,069,690

$
3,719,768

0.40
%

Aggregate annual principal repayments at December 31, 2015 are as follows (in thousands):
Parent
Company and Other Non-bank Subsidiaries
Subsidiary
Bank
2016
$

$
6,033,638

2017

226,925

2018

711

2019

956

2020

961

Thereafter

14,675

Total
$

$
6,277,866


Funds purchased are unsecured and generally mature within one to ninety days from the transaction date. Securities repurchase agreements are recorded as secured borrowings that generally mature within ninety days and are secured by certain available for sale securities. There was no outstanding accrued interest payable related to repurchase agreements at December 31, 2015 or December 31, 2014 .


137



Additional information relating to securities sold under agreements to repurchase and related liabilities at December 31, 2015 and 2014 is as follows (dollars in thousands):
December 31, 2015
Amortized
Fair
Repurchase
Average
Security Sold/Maturity
Cost
Value
Liability 1
Rate
U.S. Agency Securities:
Overnight 1
$
685,458

$
688,485

$
722,444

0.02
%
Long-term



%
Total Agency Securities
$
685,458

$
688,485

$
722,444

0.02
%
December 31, 2014
Amortized
Fair
Repurchase
Average
Security Sold/Maturity
Cost
Value
Liability 1
Rate
U.S. Agency Securities:




Overnight 1
$
1,185,345

$
1,192,361

$
1,187,445

0.04
%
Long-term



%
Total Agency Securities
$
1,185,345

$
1,192,361

$
1,187,445

0.04
%
1
BOK Financial maintains control over the securities underlying overnight repurchase agreements and generally transfers control over securities underlying longer-term dealer repurchase agreements to the respective counterparty.

Borrowings from the Federal Home Loan Banks are used for funding purposes. In accordance with policies of the Federal Home Loan Banks, BOK Financial has granted a blanket pledge of eligible assets (generally unencumbered U.S. Treasury and residential mortgage-backed securities, 1-4 family loans and multifamily loans) as collateral for these advances. The Federal Home Loan Banks have issued letters of credit totaling $340 million to secure BOK Financial’s obligations to depositors of public funds. The unused credit available to BOK Financial at December 31, 2015 pursuant to the Federal Home Loan Bank’s collateral policies is $491 million .

The Company had a $100 million senior unsecured 364 day revolving credit facility with Wells Fargo Bank, National Association, administrative agent and other commercial banks (“the Credit Facility”) which matured on June 5, 2015 and was not renewed by the Company.

BOSC may borrow funds from Pershing, LLC ("Pershing"), a clearing broker/dealer and a wholly owned subsidiary of Bank of New York Mellon, for the purposes of financing securities purchases or to facilitate funding of investment banking activities, on terms to be negotiated at the time of the borrowing. BOSC had no borrowings from Pershing outstanding at December 31, 2015 or December 31, 2014 .

In 2007, the Bank issued $250 million of subordinated debt due May 15, 2017 . Interest on this debt was based upon a fixed rate of 5.75% through May 14, 2012 and is based on a floating rate of three-month LIBOR plus 0.69% thereafter . The proceeds of this debt were used to fund the Worth National Bank and First United Bank acquisitions and to fund continued asset growth. The outstanding balance of this subordinated debt was $226 million at both December 31, 2015 and 2014 .

In 2005, the Bank issued $150 million of 10-year, fixed rate subordinated debt due June 1, 2015 . The cost of this subordinated debt, including issuance discounts and hedge loss is 5.56% . The proceeds of this debt were used to repay the unsecured revolving line of credit and to provide additional capital to support asset growth. The remaining outstanding balance of this subordinated debt of $122 million at December 31, 2014 matured on June 1, 2015.

The Company has a liability related to the repurchase of certain delinquent residential mortgage loans previously sold into GNMA mortgage pools. Interest is payable at rates contractually due to investors.

138


( 10 ) Federal and State Income Taxes

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of deferred tax assets and liabilities are as follows (in thousands):

December 31,
2015
2014
Deferred tax assets:
Share-based compensation
$
10,522

$
9,414

Credit loss allowances
88,906

74,362

Valuation adjustments
6,957

8,851

Deferred compensation
25,950

22,977

Unearned fees
11,124

11,820

Other
34,169

39,307

Total deferred tax assets
177,628

166,731

Deferred tax liabilities:
Available for sale securities mark to market
14,828

37,719

Depreciation
22,080

18,601

Mortgage servicing rights
77,900

58,733

Lease financing
22,301

24,429

Other
41,904

34,478

Total deferred tax liabilities
179,013

173,960

Net deferred tax assets (liabilities)
$
(1,385
)
$
(7,229
)

The Company determined that no valuation allowance was necessary on deferred tax assets as of December 31, 2015 and 2014.

The significant components of the provision for income taxes attributable to continuing operations for BOK Financial are shown below (in thousands):

Year Ended December 31,
2015
2014
2013
Current income tax expense:
Federal
$
117,566

$
95,289

$
131,212

State
12,397

9,392

14,381

Total current income tax expense
129,963

104,681

145,593

Deferred income tax expense:
Federal
8,397

36,521

15,915

State
1,024

2,949

1,590

Total deferred income tax expense
9,421

39,470

17,505

Total income tax expense
$
139,384

$
144,151

$
163,098


The Company adopted FASB Accounting Standards Updated No. 2014-01, Accounting for Investments in Qualified Affordable Housing Projects , on January 1, 2015. This standard was retrospectively applied to all periods presented.

139


The reconciliations of income attributable to continuing operations at the U.S. federal statutory tax rate to income tax expense are as follows (in thousands):
Year Ended December 31,
2015
2014
2013
Amount:
Federal statutory tax
$
151,075

$
153,870

$
168,710

Tax exempt revenue
(9,553
)
(8,446
)
(7,361
)
Effect of state income taxes, net of federal benefit
9,082

9,054

10,937

Utilization of tax credits:
Low-income housing tax credits, net of amortization
(3,874
)
(2,953
)
(4,145
)
Other tax credits
(2,085
)
(2,109
)
(230
)
Bank-owned life insurance
(3,264
)
(3,183
)
(3,596
)
Other, net
(1,997
)
(2,082
)
(1,217
)
Total income tax expense
$
139,384

$
144,151

$
163,098


Year Ended December 31,
2015
2014
2013
Percent of pretax income:
Federal statutory tax
35.0
%
35.0
%
35.0
%
Tax exempt revenue
(2.2
)
(1.9
)
(1.5
)
Effect of state income taxes, net of federal benefit
2.1

2.1

2.3

Utilization of tax credits:
Low-income housing tax credits, net of amortization
(0.9
)
(0.7
)
(1.0
)
Other tax credits
(0.5
)
(0.5
)

Bank-owned life insurance
(0.7
)
(0.7
)
(0.7
)
Other, net
(0.5
)
(0.5
)
(0.3
)
Total
32.3
%
32.8
%
33.8
%

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
2015
2014
2013
Balance as of January 1
$
13,374

$
12,058

$
12,275

Additions for tax for current year positions
2,226

3,813

2,730

Settlements during the period



Lapses of applicable statute of limitations
(2,368
)
(2,497
)
(2,947
)
Balance as of December 31
$
13,232

$
13,374

$
12,058


Of the above unrecognized tax benefits, $8.6 million , if recognized, would affect the effective tax rate.

BOK Financial recognizes interest and penalties accrued related to unrecognized tax benefits in income tax expense. The Company recognized $1.0 million for 2015 , $1.5 million for 2014 and $1.2 million for 2013 in interest and penalties. The Company had approximately $3.3 million and $3.6 million accrued for the payment of interest and penalties at December 31, 2015 and 2014 , respectively. Federal statutes remain open for federal tax returns filed in the previous three reporting periods. Various state income tax statutes remain open for the previous three to six reporting periods.

140


( 11 ) Employee Benefits

BOK Financial sponsors a defined benefit cash balance Pension Plan for all employees who satisfy certain age and service requirements. Pension Plan benefits were curtailed as of April 1, 2006. No participants may be added to the plan and no additional service benefits will be accrued. During 2015 and 2014, interest accrued on employees' account balances at a variable rate tied to the five-year trailing average of five-year Treasury Securities plus 1.5% . The rate has a floor of 3.0% and a ceiling of 5.0% . The 2015 quarterly variable rates remained steady at 3.00% .

The following table presents information regarding this plan (in thousands):
December 31,
2015
2014
Change in projected benefit obligation:
Projected benefit obligation at beginning of year
$
45,224

$
44,765

Interest cost
1,487

1,685

Actuarial loss (gain)
(2,702
)
2,878

Benefits paid
(5,212
)
(4,104
)
Projected benefit obligation at end of year 1,2
$
38,797

$
45,224

Change in plan assets:

Plan assets at fair value at beginning of year
$
49,443

$
48,812

Actual return on plan assets
(41
)
4,735

Benefits paid
(5,212
)
(4,104
)
Plan assets at fair value at end of year
$
44,190

$
49,443

Funded status of the plan
$
5,393

$
4,219

Components of net periodic benefit costs:

Interest cost
$
1,487

$
1,685

Expected return on plan assets
(2,706
)
(2,539
)
Other
1,849

1,409

Net benefit cost
$
630

$
555

1
Projected benefit obligation equals accumulated benefit obligation.
2
Projected benefit obligation is based on January 1 measurement date.

Weighted-average assumptions as of December 31:
2015
2014
Discount rate
3.54
%
3.42
%
Expected return on plan assets
5.00
%
6.00
%

As of December 31, 2015 , expected future benefit payments related to the Pension Plan were as follows (in thousands):
2016
$
3,620

2017
3,190

2018
3,376

2019
3,741

2020
3,196

Thereafter
31,995

$
49,118



141


Assets of the Pension Plan consist primarily of shares in the Cavanal Hill Balanced Fund. The stated objective of this fund is to provide an attractive total return through a broadly diversified mix of equities and bonds. The typical portfolio mix is approximately 60% equities and 40% bonds. The net asset value of shares in the Cavanal Hill Funds is reported daily based on market quotations for the Fund’s securities. The inception-to-date return on the fund, which is used as an indicator when setting the expected return on plan assets, was 7.05% . As of December 31, 2015 , the expected return on plan assets for 2016 is 5.00% . The maximum tax deductible Pension Plan contribution for 2015 was $15 million . No minimum contribution was required for 2015 , 2014 or 2013 . We expect an insignificant amount of net pension costs currently in accumulated other comprehensive income to be recognized as net periodic pension costs in 2016.

Employee contributions to the Thrift Plan are eligible for Company matching equal to 6% of base compensation, as defined in the plan. The Company-provided matching contribution rates range from 50% for employees with less than four years of service to 200% for employees with 15 or more years of service. Additionally, a maximum Company-provided, non-elective annual contribution of up to $750 per participant is provided for employees whose annual base compensation is less than $40,000 . Total non-elective contributions were $605 thousand for 2015 , $662 thousand for 2014 and $738 thousand for 2013 .

Participants may direct investments in their accounts to a variety of options, including a BOK Financial common stock fund and Cavanal Hill funds. Employer contributions, which are invested in accordance with the participant’s investment options, vest over five years. Thrift Plan expenses were $20.6 million for 2015 , $18.6 million for 2014 and $18.1 million for 2013 .

BOK Financial offers numerous incentive compensation plans that are aligned with the Company’s growth strategy. Compensation awarded under these plans may be based on defined formulas, other performance criteria or discretionary. Incentive compensation is designed to motivate and reinforce sales and customer service behavior in all markets. Earnings were charged $119.9 million in 2015 , $111.7 million in 2014 , and $110.9 million in 2013 for cash incentive compensation.

142



( 12 ) Share-Based Compensation Plans

The shareholders and Board of Directors of BOK Financial have approved various share-based compensation plans. An independent compensation committee of the Board of Directors determines the number of awards granted to the Chief Executive Officer and other senior executives. Share-based compensation is granted to other officers and employees as determined by the Chief Executive Officer.

The following table presents stock options outstanding during 2015 , 2014 and 2013 under these plans (in thousands, except for per share data):
Number
Weighted-
Average
Exercise
Price
Aggregate
Intrinsic
Value
Options outstanding at December 31, 2012
1,890,786

$
48.29

$
11,748

Options awarded
81,492

55.74

Options exercised
(608,663
)
48.00

Options forfeited
(219,342
)
47.65

Options expired
(9,168
)
50.61

Options outstanding at December 31, 2013
1,135,105

49.09

19,564

Options awarded


Options exercised
(323,004
)
49.17

Options forfeited
(15,509
)
45.71

Options expired
(2,701
)
47.98

Options outstanding at December 31, 2014
793,891

49.05

8,725

Options awarded


Options exercised
(286,678
)
47.86

Options forfeited
(22,304
)
48.90

Options expired
(4,874
)
51.32

Options outstanding at December 31, 2015
480,035

$
49.75

$
4,821

Options vested at:
December 31, 2013
424,459

$
49.49

$
7,146

December 31, 2014
347,633

48.85
3,889

December 31, 2015
243,395

48.17
2,829


The following table summarizes information concerning currently outstanding and vested stock options:
Options Outstanding
Options Vested
Weighted
Weighted
Average
Weighted
Weighted
Average
Range of
Remaining
Average
Average
Remaining
Exercise
Number
Contractual
Exercise
Number
Exercise
Contractual
Prices
Outstanding
Life (years)
Price
Vested
Price
Life (years)
$36.65
115,858

2.27
$36.65
59,770

$36.65
1.56
45.15 - 47.34
3,066

0.01
47.05
3,066

47.05
0.01
48.30
27,897

2.67
48.30
11,530

48.30
1.43
48.46
82,217

1.51
48.46
82,217

48.46
1.51
54.33
30,221

0.88
54.33
30,221

54.33
0.88
55.74
71,990

4.38
55.74
13,785

55.74
1.63
55.94
84,851

3.21
55.94
27,780

55.94
1.50
58.76
63,935

3.80
58.76
15,026

58.76
1.42

The aggregate intrinsic value of options exercised was $ 5.1 million for 2015 , $ 5.5 million for 2014 and $ 8.5 million for 2013 .

143




The fair value of options was determined as of the date of grant using a Black-Scholes option pricing model with the following weighted average assumptions:
2013
Average risk-free interest rate 1
0.89
%
Dividend yield
2.80
%
Volatility factors
0.272

Weighted average expected life
4.9 years

Weighted average fair value
$
9.67

1
Average risk-free interest rate represents U.S. Treasury rates matched to the expected life of the options.

No options were granted in 2015 or 2014. Compensation expense recognized on stock options totaled $ 362 thousand for 2015 , $ 826 thousand for 2014 and $ 1.3 million for 2013 . Compensation cost of stock options granted that may be recognized as compensation expense in future years totaled $ 494 thousand at December 31, 2015 . Subject to adjustments for forfeitures, we expect to recognize compensation expense for current outstanding options of $ 266 thousand in 2016 , $ 148 thousand in 2017 , $ 61 thousand in 2018 , $ 18 thousand in 2019 , and $ 1 thousand in 2020 .

The following represents a summary of the non-vested stock awards as of December 31, 2015 (in thousands):
Shares
Weighted
Average
Grant Date
Fair Value
Non-vested at January 1, 2013
592,831

Granted
211,791

$55.84
Vested
(66,648
)
$35.93
Forfeited
(89,985
)
$49.95
Non-vested at December 31, 2013
647,989

Granted
206,621

$64.96
Vested
(140,820
)
$44.56
Forfeited
(25,179
)
$56.26
Non-vested at December 31, 2014
688,611

Granted
312,755

$57.66
Vested
(114,045
)
$50.15
Forfeited
(96,212
)
$58.33
Non-vested at December 31, 2015
791,109


Compensation expense recognized on non-vested shares totaled $12.0 million for 2015 , $10.0 million for 2014 and $6.9 million for 2013 . Unrecognized compensation cost of non-vested shares totaled $ 13.7 million at December 31, 2015 . Subject to adjustment for forfeitures, we expect to recognize compensation expense of $ 7.5 million in 2016 , $ 6.2 million in 2017 , and $ 65 thousand in 2018 .

During January 2016, BOK Financial awarded 256,670 shares of non-vested stock with a fair value per award of $55.35 . The aggregate compensation cost of these awards totaled approximately $ 14.2 million . This cost will be recognized over the vesting periods, subject to adjustments for forfeitures. Non-vested shares awarded in January 2016 generally cliff vest in 3 years and are subject to a 2 holding period after vesting.

144



( 13 ) Related Parties

In compliance with applicable regulations, the Company may extend credit to certain executive officers, directors, principal shareholders and their affiliates (collectively referred to as “related parties”) in the ordinary course of business. The Company’s loans to related parties do not involve more than the normal credit risk and there are no nonaccruing or impaired related party loans outstanding at December 31, 2015 or 2014 .

Activity in loans to related parties is summarized as follows (in thousands):

Year Ended December 31,
2015
2014
Beginning balance
$
103,395

$
88,691

Advances
3,582,384

712,413

Payments
(3,104,004
)
(698,149
)
Adjustments 1
12,450

440

Ending balance
$
594,225

$
103,395

1
Adjustments generally consist of changes in status as a related party.

Certain related parties are customers of the Company for services other than loans, including consumer banking, corporate banking, risk management, wealth management, brokerage and trading, or fiduciary/trust services. The Company engages in transactions with related parties in the ordinary course of business in compliance with applicable regulations.

The Company rents office space in facilities owned by affiliates of Mr. Kaiser, its Chairman and principal shareholder. Lease payments totaled $975 thousand for 2015, $1.1 million for 2014 and $952 thousand for 2013.

Cavanal Hill Investment Management, Inc., a wholly-owned subsidiary of the Bank, is the administrator to and investment advisor for the Cavanal Hill Funds (the "Funds"), a diversified, open-ended investment company established as a business trust under the Investment Company Act of 1940 (the "1940 Act"). The Bank is custodian and BOSC, Inc. is distributor for the Funds. The Funds’ products are offered to customers, employee benefit plans, trusts and the general public in the ordinary course of business. Approximately 99% of the Funds’ assets of $ 4.1 billion are held for the Company's clients. A Company executive officer serves on the Funds' board of trustees and officers of the Bank serve as president and secretary of the Funds. A majority of the members of the Funds’ board of trustees are, however, independent of the Company and the Funds are managed by its board of trustees.

145


( 14 ) Commitments and Contingent Liabilities

Litigation Contingencies

As a member of Visa, BOK Financial is obligated for a proportionate share of certain covered litigation losses incurred by Visa under a retrospective responsibility plan. A contingent liability was recognized for the Company’s share of Visa’s covered litigation liabilities. Visa funded an escrow account to cover litigation claims, including covered litigation losses under the retrospective responsibility plan, with proceeds from its initial public offering in 2008 and from available cash.

BOK Financial currently owns 251,837 Visa Class B shares which are convertible into 415,103 shares of Visa Class A shares after the final settlement of all covered litigation. Class B shares may be diluted in the future if the escrow fund is not adequate to cover future covered litigation costs. Therefore, no value has been currently assigned to the Class B shares and no value may be assigned until the Class B shares are converted into a known number of Class A shares.

On March 3, 2015, the Bank and the Company were named as defendants in a putative class action alleging (1) that the manner in which the Bank posted charges to its consumer deposit accounts was improper from September 1, 2011 through July 8, 2014, the period after which the Bank and BOK Financial settled a class action respecting a similar claim, and before it made changes to its posting order, and (2) that the manner in which the Bank posted charges to its small business deposit accounts was improper from July 9, 2009 through July 8, 2014. The Court has denied the Bank’s motion to dismiss the claims as pre-empted by federal law, but limited the plaintiffs’ claim to a breach of contract action involving only Oklahoma customers. Discovery is on-going. A reasonable estimate of losses, if any, cannot be made at this time.

On April 8, 2015, the Bank was named as a defendant in a putative class action alleging that the Extended Overdraft Fee charged customers who failed to pay overdrafts after five days constituted interest and exceeded permissible interest rates set by state and federal law. The action was dismissed upon motion of the Bank and the time for appeal has expired.

On June 24, 2015, the Company received a complaint alleging that an employee had colluded with a borrower and an individual in misusing revenues pledged to the municipal bonds for which the Company served as trustee under the bond indenture. The Company conducted an investigation and concluded that the employee had, with respect to a single group of affiliated bond issuances, violated Company policies and procedures by waiving financial covenants, granting forbearances and accepting without disclosure to the bondholders, debt service payments from sources other than pledged revenues. The employee was terminated. On December 28, 2015, the United States District Court for the District of New Jersey entered a judgment against the principals involved in the issuances, precluding the principals from denying the alleged violations of the federal securities laws and requiring the principals to pay all outstanding principal, accrued interest, and other amounts required under the bond documents, subject to oversight by a court appointed monitor. The terminated employee has filed an action against the Bank alleging the Bank defamed the employee and made a demand for indemnification respecting the SEC investigation which demand the respective boards of directors of the Company and the Bank have denied. The Company has been advised by its counsel that there is no basis for the employee’s action and that any recovery by the employee is remote.

The Director of the New Mexico Securities Division of the State of New Mexico Regulation and Licensing Department ("the Director") has issued a Notice of Contemplated Action in connection with the purchase of various municipal bonds by the elected County Treasurer of Bernalillo County, New Mexico, from the Company. The Director seeks to determine whether to seek sanctions, which could include a fine and/or the suspension or revocation of registration, on the grounds that the Company violated the suitability rule. The County of Bernalillo, New Mexico, has commenced arbitration pursuant to the Arbitration Rules of FINRA seeking recovery of $5.6 million dollars arising out of the purchase. The Company has been advised by its counsel that there is no basis to suggest the Director should make such a determination and that any recovery by the County is remote.

In the ordinary course of business, BOK Financial and its subsidiaries are subject to legal actions and complaints. Management believes, based upon the opinion of counsel, that the actions and liability or loss, if any, resulting from the final outcomes of the proceedings, will not have a material effect on the Company’s financial condition, results of operations or cash flows.


146


Alternative Investment Commitments

The Company sponsors two private equity funds and invests in several tax credit entities and other funds as permitted by banking regulations. Consolidation of these investments is based on the variable interest model determined by the nature of the entity. Variable interest entities are generally defined as entities that either do not have sufficient equity to finance their activities without support from other parties or whose equity investors lack a controlling financial interest. Variable interest entities are consolidated based on the determination that the Company is the primary beneficiary including the power to direct the activities that most significantly impact the variable interest's economic performance and the obligation to absorb losses of the variable interest or the right to receive benefits of the variable interest that could be significant to the variable interest.

BOKF Equity, LLC, an indirect wholly-owned subsidiary, is the general partner of two consolidated private equity funds (“the Funds”). The Funds provide alternative investment opportunities to certain customers, some of which are related parties, through unaffiliated limited partnerships. These unaffiliated limited partnerships generally invest in distressed assets, asset buy-outs or venture capital companies. As general partner, BOKF Equity, LLC has the power to direct activities that most significantly affect the Funds' performance and contingent obligations to make additional investments totaling $4.9 million at December 31, 2015 . Substantially all of the obligations are offset by limited partner commitments. The Company does not accrue its contingent liability to fund investments. The Volcker Rule in Title VI of the Dodd-Frank Act will limit both the amount and structure of these type of investments.

Consolidated tax credit entities represent the Company's interest in entities earning federal new market tax credits related to qualifying loans for which the Company has the power to direct the activities that most significantly impact the variable interest's economic performance of the entity including being the primary beneficiary of or the obligation to absorb losses of the variable interest that could be significant to the variable interest. The creditors underlying the other borrowings of consolidated tax credit entities do not have recourse to the general credit of BOKF.

The Company also has interests in various unrelated alternative investments generally consisting of unconsolidated limited partnership interests in or loans to entities for which investment return is in the form of tax credits or that invest in distressed real estate loans and properties, energy development, venture capital and other activities. The Company is prohibited by banking regulations from controlling or actively managing the activities of these investments and the Company's maximum exposure to loss is restricted to its investment balance. The Company's obligation to fund alternative investments is included in Other liabilities in the Consolidated Balance Sheets. The Company's ability to hold these investments will be curtailed by the Volcker Rule.

A summary of consolidated and unconsolidated alternative investments as of December 31, 2015 and December 31, 2014 is as follows (in thousands):

December 31, 2015
Loans
Other
Assets
Other
Liabilities
Other
Borrowings
Non-controlling
Interests
Consolidated:
Private equity funds
$

$
22,472

$

$

$
17,823

Tax credit entities
10,000

12,206


10,964

10,000

Other

40,453

2,198

2,831

9,260

Total consolidated
$
10,000

$
75,131

$
2,198

$
13,795

$
37,083

Unconsolidated:
Tax credit entities
$
16,916

$
85,274

$
14,572

$

$

Other

15,506

6,319



Total unconsolidated
$
16,916

$
100,780

$
20,891

$

$



147


December 31, 2014
Loans
Other
Assets
Other
Liabilities
Other
Borrowings
Non-controlling
Interests
Consolidated:
Private equity funds
$

$
25,627

$

$

$
21,921

Tax credit entities
10,000

12,827


10,964

10,000

Other

5,996



2,106

Total consolidated
$
10,000

$
44,450

$

$
10,964

$
34,027

Unconsolidated:
Tax credit entities
$
18,192

$
96,721

$
28,920

$

$

Other

9,471

4,050



Total unconsolidated
$
18,192

$
106,192

$
32,970

$

$



Other Commitments and Contingencies

Cavanal Hill Funds’ assets include U.S. Treasury, cash management and tax-free money market funds. Assets of these funds consist of highly-rated, short-term obligations of the U.S. Treasury, corporate issuers and U.S. states and municipalities. The net asset value of units in these funds was $1.00 at December 31, 2015 . An investment in these funds is not insured by the Federal Deposit Insurance Corporation or guaranteed by BOK Financial or any of its subsidiaries. BOK Financial may, but is not obligated to purchase assets from these funds to maintain the net asset value at $1.00 . No assets were purchased from the funds in 2015 or 2014 .

Cottonwood Valley Ventures, Inc. (“CVV, Inc.”), an indirectly wholly-owned subsidiary of BOK Financial, favorably resolved its audit by the Oklahoma Tax Commission (“OTC”) for tax years 2007 through 2009. CVV, Inc. is a qualified venture capital company under the applicable Oklahoma statute. As authorized by the statute, CVV, Inc. guarantees transferable Oklahoma state income tax credits by providing direct debt financing to private companies which qualify as statutory business ventures. Due to certain statutory limitations on utilization of such credits, CVV, Inc. must sell the majority of the credits to provide the economic incentives provided for by the statute. CVV will now be allowed to resume selling qualified credits.

Total rent expense for BOK Financial was $ 25.2 million in 2015 , $25.0 million in 2014 and $23.5 million in 2013 . At December 31, 2015 , future minimum lease payments for premises under operating leases were as follows: $24.0 million in 2016 , $21.5 million in 2017 , $17.6 million in 2018 , $16.6 million in 2019 , $10.8 million in 2020 and $56.4 million thereafter. The Bank is obligated under a long-term lease for its bank premises in downtown Tulsa. The lease term, which began November 1, 1976, is for fifty-seven years with an option to terminate in 2024 with a two-year prior written notice. Premises leases may include options to renew at then current market rates and may include escalation provisions based upon changes in consumer price index or similar benchmarks.

The Federal Reserve Bank requires member banks to maintain certain minimum average cash balances. Member banks may satisfy reserve balance requirements through holdings of vault cash and balances maintained directly with a Federal Reserve Bank. The combined average balance of vault cash and balances held at the Federal Reserve Bank was $1.8 billion for the year ended December 31, 2015 and $1.5 billion for the year ended December 31, 2014 .

BOSC, Inc., a wholly-owned subsidiary of BOK Financial, is an introducing broker to Pershing, LLC for retail equity investment transactions. As such, it has indemnified Pershing, LLC against losses due to a customer's failure to settle a transaction or to repay a margin loan. All unsettled transaction and margin loans are secured as required by applicable regulation. The amount of customer balances subject to indemnification totaled $3 thousand at December 31, 2015 .

The Company agreed to guarantee rents totaling $28.7 million through September of 2017 to the City of Tulsa, Oklahoma as owner of a building immediately adjacent to the Bank’s main office for space currently rented by third-party tenants in the building. All rent payments are current. Remaining guaranteed rents totaled $5.6 million at December 31, 2015 . In return for this guarantee, the Company will receive 80% of net cash flow as defined in an agreement with the City of Tulsa through September 2017 from rental of space that was vacant at the inception of the agreement. The maximum amount that the Company may receive under this agreement is $4.5 million . Subsequent to December 31, 2015, the Company and the City of Tulsa mutually agreed to terminate the agreement.

148


( 15 ) Shareholders Equity

Preferred Stock
One billion shares of preferred stock with a par value of $0.00005 per share are authorized. The Series A Preferred Stock has no voting rights except as otherwise provided by Oklahoma corporate law and may be converted into one share of Common Stock for each 36 shares of Series A Preferred Stock at the option of the holder . Dividends are cumulative at an annual rate of ten percent of the $0.06 per share liquidation preference value when declared and are payable in cash. Aggregate liquidation preference is $15 million . No Series A Preferred Stock was outstanding in 2015 , 2014 or 2013 .
Common Stock
Common stock consists of 2.5 billion authorized shares with a $0.00006 par value. Holders of common shares are entitled to one vote per share at the election of the Board of Directors and on any question arising at any shareholders’ meeting and to receive dividends when and as declared. Additionally, regulations restrict the ability of national banks and bank holding companies to pay dividends.
Subsidiary Bank
The amounts of dividends that BOK Financial’s subsidiary bank can declare and the amounts of loans the subsidiary bank can extend to affiliates are limited by various federal banking regulations and state corporate law. Generally, dividends declared during a calendar year are limited to net profits, as defined, for the year plus retained profits for the preceding two years. The amounts of dividends are further restricted by minimum capital requirements. Based on the most restrictive limitations as well as management’s internal capital policy, at December 31, 2015 , BOK Financial's subsidiary bank could declare up to $100 million of dividends without regulatory approval. The subsidiary bank declared and paid dividends of $150 million in 2015 , $75 million in 2014 and $225 million in 2013 .

As defined by banking regulations, loan commitments and equity investments to a single affiliate may not exceed 10% of unimpaired capital and surplus and loan commitments and equity investments to all affiliates may not exceed 20% of unimpaired capital and surplus. All loans to affiliates must be fully secured by eligible collateral. At December 31, 2015 , loan commitments and equity investments were limited to $266 million to a single affiliate and $532 million to all affiliates. The largest loan commitment and equity investment to a single affiliate was $220 million and the aggregate loan commitments and equity investments to all affiliates were $330 million . The largest outstanding amount to a single affiliate at December 31, 2015 was $218 million and the total outstanding amounts to all affiliates were $244 million . At December 31, 2014 , total loan commitments and equity investments to all affiliates were $330 million and the total outstanding amounts to all affiliates were $18 million .
























149


Regulatory Capital

BOK Financial and the Bank are subject to various capital requirements administered by the federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and additional discretionary actions by regulators that could have a material effect on BOK Financial's operations. These capital requirements include quantitative measures of assets, liabilities and certain off-balance sheet items. The capital standards are also subject to qualitative judgments by the regulators .

New capital rules were effective for BOK Financial on January 1, 2015. Components of these rules will phase in through January 1, 2019. A bank following below the minimum capital requirements, including the capital conservation buffer, would be subject to regulatory restrictions on capital distributions (including but not limited to dividends and share repurchases) and executive bonus payments. For a banking institution to qualify as well capitalized, Common equity Tier 1, Tier I, Total and Leverage capital ratios must be at least 6.5% , 8% , 10% and 5% , respectively. Tier I capital consists primarily of common stockholders' equity, excluding unrealized gains or losses on available for sale securities, less goodwill, core deposit premiums and certain other intangible assets. Total capital consists primarily of Tier I capital plus preferred stock, subordinated debt and allowances for credit losses, subject to certain limitations. The Bank exceeded the regulatory definition of well capitalized as of December 31, 2015 and December 31, 2014 .

A summary of regulatory capital minimum requirements and levels follows (dollars in thousands):
Minimum Capital Requirement 1
Capital Conservation Buffer 2
Minimum Capital Requirement Including Capital Conservation Buffer
December 31, 2015
Total Capital (to Risk Weighted Assets):
Consolidated
4.50%
2.50%
7.00%
$
3,116,144

13.30
%
BOKF, NA
4.50%
N/A
4.50%
2,657,935

11.43
%
Common equity Tier 1 Capital (to Risk Weighted Assets):
Consolidated
6.00%
2.50%
8.50%
2,842,193

12.13
%
BOKF, NA
6.00%
N/A
6.00%
2,385,323

10.26
%
Tier I Capital (to Risk Weighted Assets):
Consolidated
8.00%
2.50%
10.50%
$
2,842,193

12.13
%
BOKF, NA
8.00%
N/A
8.00%
2,385,323

10.26
%
Tier I Capital (to Average Assets):
Consolidated
4.00%
N/A
4.00%
$
2,842,193

9.25
%
BOKF, NA
4.00%
N/A
4.00%
2,385,323

7.81
%
1
Effective January 1, 2015
2
Effective January 1, 2016

A summary of regulatory capital levels under then current capital rules follows as of December 31, 2014 (dollars in thousands):
2014
Total Capital (to Risk Weighted Assets):
Consolidated
$
3,120,223

14.66
%
BOKF, NA
2,449,078

11.56
%
Tier I Capital (to Risk Weighted Assets):
Consolidated
$
2,838,129

13.33
%
BOKF, NA
2,168,161

10.24
%
Tier I Capital (to Average Assets):
Consolidated
$
2,838,129

9.96
%
BOKF, NA
2,168,161

7.65
%


150


Accumulated Other Comprehensive Income (Loss)

AOCI includes unrealized gains and losses on available for sale ("AFS") securities and non-credit related unrealized losses on AFS securities for which an other-than-temporary impairment has been recorded in earnings. AOCI also includes unrealized gains on AFS securities that were transferred from AFS to investment securities in the third quarter of 2011. Such amounts will be amortized over the estimated remaining life of the security as an adjustment to yield. offsetting the related amortization of premium on the transferred securities. Unrealized losses on employee benefit plans will be reclassified into income as pension plan costs are recognized over the remaining service period of plan participants. Accumulated losses on the interest rate lock hedge of the 2005 subordinated debt issuance were reclassified into income over the ten-year life of the debt. Gains and losses in AOCI are net of deferred income taxes.

A rollforward of the components of accumulated other comprehensive income (loss) is included as follows (in thousands):
Unrealized Gain (Loss) on
Available for Sale Securities
Investment Securities Transferred from AFS
Employee Benefit Plans
Loss on Effective Cash Flow Hedges
Total
Balance, December 31, 2012
$
155,553

$
3,078

$
(8,296
)
$
(415
)
$
149,920

Net change in unrealized gain (loss)
(284,104
)

8,159


(275,945
)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities, Taxable securities

(3,210
)


(3,210
)
Interest expense, Subordinated debentures



262

262

Net impairment losses recognized in earnings
2,308




2,308

Gain on available for sale securities, net
(10,720
)



(10,720
)
Other comprehensive income (loss), before income taxes
(292,516
)
(3,210
)
8,159

262

(287,305
)
Federal and state income tax 1
(113,788
)
(1,250
)
3,174

102

(111,762
)
Other comprehensive income (loss), net of income taxes
(178,728
)

(1,960
)

4,985


160


(175,543
)
Balance, December 31, 2013
(23,175
)
1,118

(3,311
)
(255
)
(25,623
)
Net change in unrealized gain (loss)
136,050


725


136,775

Reclassification adjustments included in earnings:
Interest revenue, Investment securities, Taxable securities

(1,216
)


(1,216
)
Interest expense, Subordinated debentures



296

296

Net impairment losses recognized in earnings
373




373

Gain on available for sale securities, net
(1,539
)



(1,539
)
Other comprehensive income (loss), before income taxes
134,884

(1,216
)
725

296

134,689

Federal and state income tax 1
52,470

(474
)
282

115

52,393

Other comprehensive income (loss), net of income taxes
82,414


(742
)

443


181


82,296

Balance, December 31, 2014
59,239

376

(2,868
)
(74
)
56,673

Net change in unrealized gain (loss)
(48,607
)

1,804


(46,803
)
Reclassification adjustments included in earnings:
Interest revenue, Investment securities, Taxable securities

(503
)


(503
)
Interest expense, Subordinated debentures



121

121

Net impairment losses recognized in earnings
1,819




1,819

Gain on available for sale securities, net
(12,058
)



(12,058
)
Other comprehensive income (loss), before income taxes
(58,846
)
(503
)
1,804

121

(57,424
)
Federal and state income tax 1
(22,891
)
(195
)
701

47

(22,338
)
Other comprehensive income (loss), net of income taxes
(35,955
)

(308
)

1,103


74


(35,086
)
Balance, December 31, 2015
$
23,284

$
68

$
(1,765
)
$

$
21,587

1
Calculated using 39% effective tax rate.

151


( 16 ) Earnings Per Share

The following table presents the computation of basic and diluted earnings per share (dollars in thousands, except per share data):
Year Ended
2015
2014
2013
Numerator:
Net income attributable to BOK Financial Corp. shareholders
$
288,565

$
292,435

$
316,609

Less: Earnings allocated to participating securities
3,383

3,239

3,388

Numerator for basic earnings per share – income available to common shareholders
285,182

289,196

313,221

Effect of reallocating undistributed earnings of participating securities
3

4

7

Numerator for diluted earnings per share – income available to common shareholders
$
285,185

$
289,200

$
313,228

Denominator:


Weighted average shares outstanding
68,397,215

69,159,902

68,719,069

Less:  Participating securities included in weighted average shares outstanding
802,526

765,708

730,172

Denominator for basic earnings per common share
67,594,689

68,394,194

67,988,897

Dilutive effect of employee stock compensation plans 1
96,969

150,576

216,622

Denominator for diluted earnings per common share
67,691,658

68,544,770

68,205,519

Basic earnings per share
$
4.22

$
4.23

$
4.61

Diluted earnings per share
$
4.21

$
4.22

$
4.59

1 Excludes employee stock options with exercise prices greater than current market price.





( 17 ) Reportable Segments

BOK Financial operates three principal lines of business: Commercial Banking, Consumer Banking and Wealth Management. Commercial Banking includes lending, treasury and cash management services and customer risk management products to small businesses, middle market and larger commercial customers. Commercial Banking also includes the TransFund EFT network. Consumer Banking includes retail lending and deposit services, lending and deposit services to small business customers served through the consumer branch network and all mortgage banking activities. Wealth Management provides fiduciary services, private bank services and investment advisory services in all markets. Wealth Management also underwrites state and municipal securities and engages in brokerage and trading activities.

In addition to its lines of business, BOK Financial has a Funds Management unit. The primary purpose of this unit is to manage overall liquidity needs and interest rate risk. Each line of business borrows funds from and provides funds to the Funds Management unit as needed to support their operations. Operating results for Funds Management and other include the effect of interest rate risk positions and risk management activities, securities gains and losses including impairment charges, the provision for credit losses in excess of net loans charged off, tax planning strategies and certain executive compensation costs that are not attributed to the lines of business.

BOK Financial allocates resources and evaluates performance of its lines of business after allocation of funds, actual net credit losses and capital costs. In addition, we measure the performance of our business lines after allocation of certain indirect expenses and taxes on statutory rates. The allocation for the prior comparable periods have been revised on a comparable basis.

The cost of funds borrowed from the Funds Management unit by the operating lines of business is transfer priced at rates that approximate market rates for funds with similar duration. Market rates are generally based on the applicable LIBOR or interest rate swap rates, adjusted for prepayment risk. This method of transfer-pricing funds that support assets of the operating lines of business tends to insulate them from interest rate risk.


152



The value of funds provided by the operating lines of business to the Funds Management unit is based on rates which approximate the wholesale market rates for funds with similar duration and re-pricing characteristics. Market rates are generally based on LIBOR or interest rate swap rates. The funds credit formula applied to deposit products with indeterminate maturities is established based on their re-pricing characteristics reflected in a combination of the short-term LIBOR rates and a moving average of an intermediate term swap rate, with an appropriate spread applied to both. Shorter duration products are weighted towards the short-term LIBOR rate and longer duration products are weighted towards intermediate swap rates. The expected duration ranges from 30 days for certain rate-sensitive deposits to five years.

Economic capital is assigned to the business units by a capital allocation model that reflects management's assessment of risk. This model assigns capital based upon credit, operating, interest rate and market risk inherent in our business lines and recognizes the diversification benefits among the units. The level of assigned economic capital is a combination of the risk taken by each business line, based on its actual exposures and calibrated to its own loss history where possible. Average invested capital includes economic capital and amounts we have invested in the lines of business.

Substantially all revenue is from domestic customers. No single external customer accounts for more than 10% of total revenue.

Net loans charged off and provision for credit losses represents net loans charged off as attributed to the lines of business and the provision for credit losses in excess of net charge-offs attributed to Funds Management and Other.

Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2015 is as follows (in thousands):
Commercial
Consumer
Wealth
Management
Funds Management and Other
BOK
Financial
Consolidated
Net interest revenue from external sources
$
439,727

$
84,848

$
24,770

$
154,009

$
703,354

Net interest revenue (expense) from internal sources
(50,678
)
29,824

21,524

(670
)

Net interest revenue
389,049

114,672

46,294

153,339

703,354

Provision for credit losses
(6,018
)
6,108

(891
)
34,801

34,000

Net interest revenue after provision for credit losses
395,067

108,564

47,185

118,538

669,354

Other operating revenue
177,522

216,772

250,942

21,617

666,853

Other operating expense
207,394

213,782

230,838

252,550

904,564

Net direct contribution
365,195

111,554

67,289

(112,395
)
431,643

Corporate expense allocations
35,680

74,868

39,654

(150,202
)

Net income before taxes
329,515

36,686

27,635

37,807

431,643

Federal and state income taxes
128,181

14,271

10,750

(13,818
)
139,384

Net income
201,334

22,415

16,885

51,625

292,259

Net income attributable to non-controlling interests



3,694

3,694

Net income attributable to BOK Financial Corp. shareholders
$
201,334

$
22,415

$
16,885

$
47,931

$
288,565

Average assets
$
13,342,585

$
6,713,444

$
4,689,850

$
5,828,876

$
30,574,755

Average invested capital
1,050,759

265,775

225,968

1,794,250

3,336,752

Performance measurements:





Return on average assets
1.51
%
0.33
%
0.41
%


0.94
%
Return on average invested capital
19.18
%
8.43
%
8.45
%


8.65
%
Efficiency ratio
36.51
%
62.54
%
77.05
%


65.34
%


153



Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2014 is as follows (in thousands):
Commercial
Consumer
Wealth
Management
Funds Management and Other
BOK
Financial
Consolidated
Net interest revenue from external sources
$
381,687

$
81,852

$
23,826

$
177,829

$
665,194

Net interest revenue (expense) from internal sources
(43,939
)
36,801

20,578

(13,440
)

Net interest revenue
337,748

118,653

44,404

164,389

665,194

Provision for credit losses
(7,447
)
5,477

213

1,757


Net interest revenue after provision for credit losses
345,195

113,176

44,191

162,632

665,194

Other operating revenue
169,704

200,815

239,045

12,394

621,958

Other operating expense
204,230

195,770

217,049

230,473

847,522

Net direct contribution
310,669

118,221

66,187

(55,447
)
439,630

Corporate expense allocations
41,585

63,006

31,465

(136,056
)

Net income before taxes
269,084

55,215

34,722

80,609

439,630

Federal and state income taxes
104,674

21,479

13,507

4,491

144,151

Net income
164,410

33,736

21,215

76,118

295,479

Net income attributable to non-controlling interests



3,044

3,044

Net income attributable to BOK Financial Corp. shareholders
$
164,410

$
33,736

$
21,215

$
73,074

$
292,435

Average assets
$
11,384,782

$
6,584,157

$
4,518,511

$
5,511,408

$
27,998,858

Average invested capital
946,383

277,404

215,089

1,737,197

3,176,073

Performance measurements:





Return on average assets
1.45
%
0.51
%
0.51
%


1.04
%
Return on average invested capital
17.40
%
12.16
%
10.77
%


9.21
%
Efficiency ratio
40.06
%
59.14
%
76.00
%


64.50
%


154



Reportable segments reconciliation to the Consolidated Financial Statements for the year ended December 31, 2013 is as follows (in thousands):
Commercial
Consumer
Wealth
Management
Funds Management and Other
BOK
Financial
Consolidated
Net interest revenue from external sources
$
363,961

$
85,813

$
25,478

$
199,225

$
674,477

Net interest revenue (expense) from internal sources
(51,592
)
39,628

20,061

(8,097
)

Net interest revenue
312,369

125,441

45,539

191,128

674,477

Provision for credit losses
(4,372
)
5,622

1,275

(30,425
)
(27,900
)
Net interest revenue after provision for credit losses
316,741

119,819

44,264

221,553

702,377

Other operating revenue
163,206

225,336

211,655

20,075

620,272

Other operating expense
192,629

188,745

198,197

261,049

840,620

Net direct contribution
287,318

156,410

57,722

(19,421
)
482,029

Corporate expense allocations
44,107

56,957

29,876

(130,940
)

Net income before taxes
243,211

99,453

27,846

111,519

482,029

Federal and state income taxes
94,609

38,687

10,832

18,970

163,098

Net income
148,602

60,766

17,014

92,549

318,931

Net income attributable to non-controlling interests



2,322

2,322

Net income attributable to BOK Financial Corp. shareholders
$
148,602

$
60,766

$
17,014

$
90,227

$
316,609

Average assets
$
10,386,502

$
6,520,498

$
4,556,132

$
5,917,962

$
27,381,094

Average invested capital
906,717

293,736

203,914

1,571,059

2,975,426

Performance measurements:





Return on average assets
1.43
%
0.93
%
0.40
%
1.16
%
Return on average invested capital
16.39
%
20.69
%
8.95
%
10.64
%
Efficiency ratio
40.74
%
53.22
%
76.49
%
64.60
%

155


( 18 ) Fair Value Measurements

Fair value is defined by applicable accounting guidance as the price to sell an asset or transfer a liability in an orderly transaction between market participants in the principal market for the given asset or liability at the measurement date based on market conditions at that date. An orderly transaction assumes exposure to the market for a customary period for marketing activities prior to the measurement date and not a forced liquidation or distressed sale. Certain assets and liabilities are recorded in the Company’s financial statements at fair value. Some are recorded on a recurring basis and some on a non-recurring basis.

For some assets and liabilities, observable market transactions and market information might be available. For other assets and liabilities, observable market transactions and market information might not be available. A hierarchy for fair value has been established which categorizes into three levels the inputs to valuation techniques used to measure fair value. The three levels are as follows:

Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) - fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities.

Significant Other Observable Inputs (Level 2) - fair value is based on significant other observable inputs which are generally determined based on a single price for each financial instrument provided to us by an applicable third-party pricing service and is based on one or more of the following:

Quoted prices for similar, but not identical, assets or liabilities in active markets;
Quoted prices for identical or similar assets or liabilities in inactive markets;
Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates;
Other inputs derived from or corroborated by observable market inputs.

Significant Unobservable Inputs (Level 3) - fair value is based upon model-based valuation techniques for which at least one significant assumption is not observable in the market.

Transfers between levels are recognized as of the end of the reporting period. During 2015 , $2.2 million of residential mortgage loans held for sale were transferred from significant other observable inputs to significant unobservable inputs. These loans cannot be sold to U.S. government agencies due to origination defects. An unobservable liquidity discount is applied to determine fair value. There were no other transfers in or out of quoted prices in active markets for identical instruments, significant other observable inputs or significant unobservable inputs during the year ended December 31, 2015 and 2014 , respectively.

The underlying methods used by the third-party pricing services are considered in determining the primary inputs used to determine fair values. Management has evaluated the methodologies employed by the third-party pricing services by comparing the price provided by the pricing service with other sources, including brokers' quotes, sales or purchases of similar instruments and discounted cash flows to establish a basis for reliance on the pricing service values. Significant differences between the pricing service provided value and other sources are discussed with the pricing service to understand the basis for their values. Based on all observable inputs, management may adjust prices obtained from third-party pricing services to more appropriately reflect the prices that would be received to sell assets or paid to transfer liabilities in orderly transactions in the current market. No significant adjustments were made to prices provided by third-party pricing services at December 31, 2015 and 2014 .


156


Assets and Liabilities Measured at Fair Value on a Recurring Basis

The fair value of financial assets and liabilities that are measured on a recurring basis is as follows as of December 31, 2015 (in thousands):
Total
Quoted Prices in Active Markets for Identical Instruments
Significant Other Observable Inputs
Significant Unobservable Inputs
Assets:
Trading securities:
U.S. government agency debentures
$
61,295

$

$
61,295

$

U.S. agency residential mortgage-backed securities
10,989


10,989


Municipal and other tax-exempt securities
31,901


31,901


Other trading securities
18,219


18,219


Total trading securities
122,404


122,404


Available for sale securities:




U.S. Treasury securities
995

995



Municipal and other tax-exempt securities
56,817


47,207

9,610

U.S. government agency residential mortgage-backed securities
5,898,351


5,898,351


Privately issued residential mortgage-backed securities
139,118


139,118


Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,905,796


2,905,796


Other debt securities
4,151



4,151

Perpetual preferred stock
19,672


19,672


Equity securities and mutual funds
17,833

3,265

14,568


Total available for sale securities
9,042,733

4,260

9,024,712

13,761

Fair value option securities – U.S. government agency residential mortgage-backed securities
444,217


444,217


Residential mortgage loans held for sale
308,439


300,565

7,874

Mortgage servicing rights, net 1
218,605



218,605

Derivative contracts, net of cash margin 2
586,270

38,530

547,740


Other assets – private equity funds
22,472



22,472

Liabilities:




Derivative contracts, net of cash margin 2
581,701


581,701


1
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 7 , Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in a net asset position that were valued based on quoted prices in active markets or identical instruments (Level 1) are exchange-traded energy derivative contracts, net of cash margin. Derivative contracts in a net liability position that were valued using quoted prices in active markets for identical instruments (Level 1) are exchange-traded interest rate and agricultural derivative contracts fully offset by cash margin.


157


The fair value of financial assets and liabilities that are measured on a recurring basis is as follows as of December 31, 2014 (in thousands):
Total
Quoted Prices in Active Markets for Identical Instruments
Significant Other Observable Inputs
Significant Unobservable Inputs
Assets:
Trading securities:
U.S. Government agency debentures
$
85,092

$

$
85,092

$

U.S. government agency residential mortgage-backed securities
31,199


31,199


Municipal and other tax-exempt securities
38,951


38,951


Other trading securities
33,458


33,458


Total trading securities
188,700


188,700


Available for sale securities:




U.S. Treasury securities
1,005

1,005



Municipal and other tax-exempt securities
63,557


53,464

10,093

U.S. government agency residential mortgage-backed securities
6,646,884


6,646,884


Privately issued residential mortgage-backed securities
165,957


165,957


Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,048,609


2,048,609


Other debt securities
9,212


5,062

4,150

Perpetual preferred stock
24,277


24,277


Equity securities and mutual funds
19,444

4,927

14,517


Total available for sale securities
8,978,945

5,932

8,958,770

14,243

Fair value option securities – U.S. government agency residential mortgage-backed securities
311,597


311,597


Residential mortgage loans held for sale
304,182


292,326

11,856

Mortgage servicing rights, net 1
171,976



171,976

Derivative contracts, net of cash margin 2
361,874

17,607

344,267


Other assets – private equity funds
25,627



25,627

Liabilities:


Derivative contracts, net of cash margin 2
354,554

541

354,013


1
A reconciliation of the beginning and ending fair value of mortgage servicing rights and disclosures of significant assumptions used to determine fair value are presented in Note 7 , Mortgage Banking Activities.
2
See Note 3 for detail of fair value of derivative contracts by contract type. Derivative contracts in a net asset position that were valued based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded energy derivative contracts, net of cash margin. Derivative contracts in a net liability position that were valued using quoted prices in active markets for identical instruments based on quoted prices in active markets for identical instruments (Level 1) are exchange-traded interest rate and agricultural derivative contracts, net of cash margin.



158


Following is a description of the Company's valuation methodologies used for assets and liabilities measured on a recurring basis:
Securities
The fair values of trading, available for sale and fair value option securities are based on quoted prices for identical instruments in active markets, when available. If quoted prices for identical instruments are not available, fair values are based on significant other observable inputs such as quoted prices of comparable instruments or interest rates and credit spreads, yield curves, volatilities, prepayment speeds and loss severities.

The fair value of certain available for sale municipal and other debt securities may be based on significant unobservable inputs. These significant unobservable inputs include limited observed trades, projected cash flows, current credit rating of the issuers and, when applicable, the insurers of the debt and observed trades of similar debt. Discount rates are primarily based on reference to interest rate spreads on comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies adjusted for a lack of trading volume. Significant unobservable inputs are developed by investment securities professionals involved in the active trading of similar securities. A summary of significant inputs used to value these securities follows. A management committee composed of senior members from the Company's Capital Markets, Risk Management and Finance departments assess the appropriateness of these inputs monthly.

Derivatives

All derivative instruments are carried on the balance sheet at fair value. Fair values for exchange-traded contracts are based on quoted prices. Fair values for over-the-counter interest rate, commodity and foreign exchange contracts are based on valuations provided either by third-party dealers in the contracts, quotes provided by independent pricing services, or a third-party provided pricing model that uses significant other observable market inputs.

Credit risk is considered in determining the fair value of derivative instruments. Management determines fair value adjustments based on various risk factors including but not limited to counterparty credit rating or equivalent loan grading, derivative contract notional size, price volatility of the underlying commodity, duration of the derivative contracts and expected loss severity. Expected loss severity is based on historical losses for similarly risk graded commercial loan customers. Decreases in counterparty credit rating or grading and increases in price volatility and expected loss severity all tend to increase the credit quality adjustment which reduces the fair value of asset contracts. The reduction in fair value is recognized in earnings during the current period.

We also consider our own credit risk in determining the fair value of derivative contracts. Changes in our credit rating would affect the fair value of our derivative liabilities. In the event of a credit downgrade, the fair value of our derivative liabilities would increase. The change in the fair value would be recognized in earnings in the current period.
Residential Mortgage Loans Held for Sale
Residential mortgage loans held for sale are carried on the balance sheet at fair value. The fair values of conforming residential mortgage loans held for sale are based upon quoted market prices of such loans sold in securitization transactions, including related unfunded loan commitments. The fair value of mortgage loans that are unable to be sold to U.S. government agencies is determined using quoted prices of loans that are sold in securitization transactions with a liquidity discount applied.

Other Assets - Private Equity Funds
The fair value of the portfolio investments of the Company's two private equity funds are based upon net asset value reported by the underlying funds, as adjusted by the general partner when necessary to represent the price that would be received to sell the assets. The Company's private equity funds provide customers alternative investment opportunities as limited partners of the funds. As fund of funds, the private equity funds invest in other limited partnerships or limited liability companies that invest substantially all of their assets in U.S. companies pursuing diversified investment strategies including early-stage venture capital, distressed securities and corporate or asset buy-outs. Private equity fund assets are long-term, illiquid investments. No secondary market exists for these assets. The private equity funds typically invest in funds that provide no redemption rights to investors. The fair value of the private equity investments may only be realized through cash distributions from the underlying funds.


159


The following represents the changes related to assets measured at fair value on a recurring basis using significant unobservable inputs (in thousands):
Available for Sale Securities
Residential mortgage loans held for sale
Other assets – private equity funds
Municipal and other tax-exempt
Other debt securities
Equity securities and mutual funds
Balance, December 31, 2013
$
17,805

$
4,712

$
4,207

$

$
27,341

Transfer to Level 3 from Level 2



13,644


Purchases and capital calls




1,012

Redemptions and distributions
(7,487
)
(500
)


(7,473
)
Proceeds from sales



(1,176
)

Gain (loss) recognized in earnings:
Mortgage banking revenue



(612
)

Gain on assets, net




4,747

Gain on available for sale securities, net
(235
)




Charitable contributions to BOKF Foundation


(2,420
)


Other comprehensive income (loss):
Net change in unrealized gain (loss)
10

(62
)
(1,787
)


Balance, December 31, 2014
10,093

4,150


11,856

25,627

Transfer to Level 3 from Level 2



2,193


Purchases and capital calls




1,027

Redemptions and distributions




(6,955
)
Proceeds from sales



(6,283
)

Gain (loss) recognized in earnings:
Mortgage banking revenue



108


Gain on assets, net




2,773

Gain on available for sale securities, net





Charitable contributions to BOKF Foundation





Other comprehensive income (loss):
Net change in unrealized gain (loss)
(483
)
1




Balance, December 31, 2015
$
9,610

$
4,151

$

$
7,874

$
22,472




160


A summary of quantitative information about assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2015 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
Par
Value
Amortized
Cost/Unpaid Principal Balance
Fair
Value
Valuation Technique(s)
Significant Unobservable Input
Range
(Weighted Average)
Available for sale securities:
Municipal and other tax-exempt securities
$
10,370

$
10,311

$
9,610

Discounted cash flows
1
Interest rate spread
5.47%-5.77% (5.73%)
2
92.34%-92.93% (92.67%)
3
Other debt securities
4,400

4,400

4,151

Discounted cash flows
1
Interest rate spread
5.80% - 5.92% (5.90%)
4
94.33% - 94.34% (94.34%)
3
Residential mortgage loans held for sale
N/A
8,395

7,874

Quoted prices of loans sold in securitization transactions, with a liquidity discount applied
Liquidity discount applied to the market value of mortgage loans qualifying for sale to U.S. government agencies
93.79%
Other assets - private equity funds
N/A
N/A
22,742

Net asset value reported by underlying fund
Net asset value reported by underlying fund
N/A
1
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume.
2
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 499 to 541 basis points over average yields for comparable tax-exempt securities.
3
Represents fair value as a percentage of par value.
4
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1% .






161


A summary of quantitative information about Recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of December 31, 2014 follows (in thousands):
Quantitative Information about Level 3 Recurring Fair Value Measurements
Par
Value
Amortized
Cost 6
Fair
Value
Valuation Technique(s)
Significant Unobservable Input
Range
(Weighted Average)
Available for sale securities:
Municipal and other tax-exempt securities
$
10,870

$
10,805

$
10,093

Discounted cash flows
1
Interest rate spread
4.96%-5.26% (5.21%)
2
92.65%-94.32% (93.09%)
3
Other debt securities
4,400

4,400

4,150

Discounted cash flows
1
Interest rate spread
5.62% - 5.67% (5.66%)
4
92.65% - 92.95% (92.77%)
3
Residential mortgage loans held for sale
N/A
12,468

11,856

Quoted prices of loans sold in securitization transactions, with a liquidity discount applied
Liquidity discount applied to the market value of mortgage loans qualifying for sale to U.S. government agencies
95.09%
Other assets - private equity funds
N/A
N/A
25,627

Net asset value reported by underlying fund
Net asset value reported by underlying fund
N/A
1
Discounted cash flows developed using discount rates primarily based on reference to interest rate spreads for comparable securities of similar duration and credit rating as determined by the nationally-recognized rating agencies, adjusted for lack of trading volume.
2
Interest rate yields used to value investment grade tax-exempt securities represent a spread of 488 to 516 basis points over average yields for comparable tax-exempt securities.
3
Represents fair value as a percentage of par value.
4
Interest rate yields used to value investment grade taxable securities based on comparable short-term taxable securities which are generally yielding less than 1% .




162


Fair Value of Assets and Liabilities Measured on a Non-Recurring Basis

Assets measured at fair value on a non-recurring basis include pension plan assets, which are based on quoted prices in active markets for identical instruments, collateral for certain impaired loans and real property and other assets acquired to satisfy loans, which are based primarily on comparisons to completed sales of similar assets.

The following represents the carrying value of assets measured at fair value on a non-recurring basis and related losses recorded during the year. The carrying value represents only those assets with the balance sheet date for which the fair value was adjusted during the year:
Carrying Value at December 31, 2015
Fair Value Adjustments for the
Year Ended December 31, 2015
Recognized In:
Quoted Prices
in Active Markets for Identical Instruments
Significant
Other
Observable
Inputs
Significant
Unobservable
Inputs
Gross charge-offs against allowance for loan losses
Net losses and expenses of repossessed assets, net
Impaired loans
$

$
252

$
20,805

$
4,042

$

Real estate and other repossessed assets

13,611

245


1,820

Carrying Value at December 31, 2014
Fair Value Adjustments for the
Year Ended December 31, 2014
Recognized In:
Quoted Prices
in Active Markets for Identical Instruments
Significant
Other
Observable
Inputs
Significant
Unobservable
Inputs
Gross charge-offs against allowance for loan losses
Net losses and expenses of repossessed assets, net
Impaired loans
$

$
8,198

$
635

$
4,044

$

Real estate and other repossessed assets

22,594

3,691


3,563


The fair value of collateral-dependent impaired loans and real estate and other repossessed assets and the related fair value adjustments are generally based on unadjusted third-party appraisals. Our appraisal review policies require appraised values to be supported by observed inputs derived principally from or corroborated by observable market data. Appraisals that are not based on observable inputs or that require significant adjustments or fair value measurements that are not based on third-party appraisals are considered to be based on significant unobservable inputs. Non-recurring fair value measurements of collateral-dependent impaired loans and real estate and other repossessed assets based on significant unobservable inputs are generally due to estimates of current fair values between appraisal dates. Significant unobservable inputs include listing prices for comparable assets, uncorroborated expert opinions or management's knowledge of the collateral or industry. These inputs are developed by asset management and workout professionals and approved by senior Credit Administration executives.

A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of December 31, 2015 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
Fair Value
Valuation Technique(s)
Significant Unobservable Input
Range
(Weighted Average)
Impaired loans
$
20,805

Appraised value, as adjusted
Broker quotes and management's knowledge of industry and collateral.
N/A
Real estate and other repossessed assets
245

Appraised value, as adjusted
Marketability adjustments off appraised value 1
66%-81% (74%)
1
Marketability adjustments include consideration of estimated costs to sell which is approximately 10% of the fair value.


163


A summary of quantitative information about Non-recurring Fair Value Measurements based on Significant Unobservable Inputs (Level 3) as of December 31, 2014 follows (in thousands):
Quantitative Information about Level 3 Non-recurring Fair Value Measurements
Fair Value
Valuation Technique(s)
Significant Unobservable Input
Range
(Weighted Average)
Impaired loans
$
635

Appraised value, as adjusted
Broker quotes and management's knowledge of industry and collateral.
N/A
Real estate and other repossessed assets
3,691

Appraised value, as adjusted
Marketability adjustments off appraised value
65%

The fair value of pension plan assets was approximately $44 million at December 31, 2015 and $49 million at December 31, 2014 , determined by significant other observable inputs. Fair value adjustments of pension plan assets along with changes in the projected benefit obligation are recognized in other comprehensive income.




164


Fair Value of Financial Instruments

The following table presents the carrying values and estimated fair values of all financial instruments, including those financial assets and liabilities that are not measured and reported at fair value on a recurring basis or non-recurring (dollars in thousands):
December 31, 2015
Carrying
Value
Range of Contractual Yields
Average
Re-pricing
(in years)
Discount Rate
Estimated
Fair
Value
Cash and due from banks
$
573,699

$
573,699

Interest-bearing cash and cash equivalents
2,069,900

2,069,900

Trading securities:
U.S. Government agency debentures
61,295

61,295

U.S. government agency residential mortgage-backed securities
10,989

10,989

Municipal and other tax-exempt securities
31,901

31,901

Other trading securities
18,219

18,219

Total trading securities
122,404

122,404

Investment securities:


Municipal and other tax-exempt securities
365,258

368,910

U.S. government agency residential mortgage-backed securities
26,833

27,874

Other debt securities
205,745

232,375

Total investment securities
597,836

629,159

Available for sale securities:


U.S. Treasury securities
995

995

Municipal and other tax-exempt securities
56,817

56,817

U.S. government agency residential mortgage-backed securities
5,898,351

5,898,351

Privately issued residential mortgage-backed securities
139,118

139,118

Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,905,796

2,905,796

Other debt securities
4,151

4,151

Perpetual preferred stock
19,672

19,672

Equity securities and mutual funds
17,833

17,833

Total available for sale securities
9,042,733

9,042,733

Fair value option securities – U.S. government agency residential mortgage-backed securities
444,217

444,217

Residential mortgage loans held for sale
308,439

308,439

Loans:


Commercial
10,252,531

0.25
% -
30.00%
0.62
0.52
% -
4.34%
10,053,952

Commercial real estate
3,259,033

0.38
% -
18.00%
0.73
0.95
% -
3.93%
3,233,476

Residential mortgage
1,876,893

1.67
% -
18.00%
2.42
0.86
% -
4.25%
1,902,976

Personal
552,697

0.38
% -
21.00%
0.37
1.19
% -
4.11%
549,068

Total loans
15,941,154

15,739,472

Allowance for loan losses
(225,524
)

Loans, net of allowance
15,715,630

15,739,472

Mortgage servicing rights
218,605

218,605

Derivative instruments with positive fair value, net of cash margin
586,270

586,270

Other assets – private equity funds
22,472

22,472

Deposits with no stated maturity
18,682,094

18,682,094

Time deposits
2,406,064

0.02
% -
5.50%
1.78
1.11
% -
1.57%
2,394,562

Other borrowings
6,051,515

0.25
% -
3.40%
0.00
0.20
% -
2.89%
5,600,932

Subordinated debentures
226,350

1.05%
1.37
2.12%
223,758

Derivative instruments with negative fair value, net of cash margin
581,701

581,701


165


December 31, 2014
Carrying
Value
Range of Contractual Yields
Average
Re-pricing
(in years)
Discount Rate
Estimated
Fair
Value
Cash and due from banks
$
550,576

$
550,576

Interest-bearing cash and cash equivalents
1,925,266

1,925,266

Trading securities:
U.S. Government agency debentures
85,092

85,092

U.S. government agency residential mortgage-backed securities
31,199

31,199

Municipal and other tax-exempt securities
38,951

38,951

Other trading securities
33,458

33,458

Total trading securities
188,700

188,700

Investment securities:


Municipal and other tax-exempt
405,090

408,344

U.S. government agency residential mortgage-backed securities
35,750

37,463

Other debt securities
211,520

227,819

Total investment securities
652,360

673,626

Available for sale securities:


U.S. Treasury
1,005

1,005

Municipal and other tax-exempt
63,557

63,557

U.S. government agency residential mortgage-backed securities
6,646,884

6,646,884

Privately issued residential mortgage-backed securities
165,957

165,957

Commercial mortgage-backed securities guaranteed by U.S. government agencies
2,048,609

2,048,609

Other debt securities
9,212

9,212

Perpetual preferred stock
24,277

24,277

Equity securities and mutual funds
19,444

19,444

Total available for sale securities
8,978,945

8,978,945

Fair value option securities – U.S. government agency residential mortgage-backed securities
311,597

311,597

Residential mortgage loans held for sale
304,182

304,182

Loans:


Commercial
9,095,670

0.17
% -
30.00%
0.65
0.51
% -
4.34%
8,948,870

Commercial real estate
2,728,150

0.38
% -
18.00%
0.84
1.09
% -
3.78%
2,704,454

Residential mortgage
1,949,512

1.20
% -
18.00%
2.50
0.64
% -
3.99%
1,985,870

Personal
434,705

0.38
% -
21.00%
0.45
1.04
% -
3.98%
431,274

Total loans
14,208,037

14,070,468

Allowance for loan losses
(189,056
)

Loans, net of allowance
14,018,981

14,070,468

Mortgage servicing rights
171,976

171,976

Derivative instruments with positive fair value, net of cash margin
361,874

361,874

Other assets – private equity funds
25,627

25,627

Deposits with no stated maturity
18,532,143

18,532,143

Time deposits
2,608,716

0.02
% -
9.64%
1.92
0.76
% -
1.33%
2,612,576

Other borrowings
3,378,294

0.21
% -
1.52%
0.12
0.06
% -
2.64%
3,331,771

Subordinated debentures
347,983

0.92
% -
5.00%
1.67
2.14%
344,687

Derivative instruments with negative fair value, net of cash margin
354,554

354,554


Because no market exists for certain of these financial instruments and management does not intend to sell these financial instruments, the fair values shown in the tables above may not represent values at which the respective financial instruments could be sold individually or in the aggregate at the given reporting date.

166


The following methods and assumptions were used in estimating the fair value of these financial instruments:
Cash and Cash Equivalents
The book value reported in the consolidated balance sheet for cash and short-term instruments approximates those assets’ fair values.
Securities
The fair values of securities are generally based on Significant Other Observable Inputs such as quoted prices for comparable instruments or interest rates and credit spreads, yield curves, volatilities, prepayment speeds and loss severities.

Loans
The fair value of loans, excluding loans held for sale, are based on discounted cash flow analyses using interest rates and credit and liquidity spreads currently being offered for loans with similar remaining terms to maturity and risk, adjusted for the impact of interest rate floors and ceilings which are classified as Significant Unobservable Inputs. The fair values of loans were estimated to approximate their discounted cash flows less loan loss allowances allocated to these loans of $195 million at December 31, 2015 and $161 million at December 31, 2014 .
Deposits
The fair values of time deposits are based on discounted cash flow analyses using interest rates currently being offered on similar transactions which are considered Significant Unobservable Inputs. Estimated fair value of deposits with no stated maturity, which includes demand deposits, transaction deposits, money market deposits and savings accounts, is equal to the amount payable on demand. Although market premiums paid reflect an additional value for these low cost deposits, adjusting fair value for the expected benefit of these deposits is prohibited. Accordingly, the positive effect of such deposits is not included in the tables above.
Other Borrowings and Subordinated Debentures
The fair values of these instruments are based upon discounted cash flow analyses using interest rates currently being offered on similar instruments which are considered Significant Unobservable Inputs.

Off-Balance Sheet Instruments
The fair values of commercial loan commitments are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements. The fair values of these off-balance sheet instruments were not significant at December 31, 2015 or December 31, 2014 .


Fair Value Election

As more fully disclosed in Note 2 and Note 7 to the Consolidated Financial Statements, the Company has elected to carry all residential mortgage-backed securities which have been designated as economic hedges against changes in the fair value of mortgage servicing rights, certain corporate debt securities economically hedged by derivative contracts to manage interest rate risk and all residential mortgage loans originated for sale at fair value. Changes in the fair value of these financial instruments are recognized in earnings.

167



( 19 ) Parent Company Only Financial Statements

Summarized financial information for BOK Financial – Parent Company Only follows:

Balance Sheets
(In thousands)
December 31,
2015
2014
Assets
Cash and cash equivalents
$
282,169

$
510,668

Available for sale securities
20,150

24,794

Investment in subsidiaries
2,933,081

2,774,276

Other assets
1,534

1,637

Total assets
$
3,236,934

$
3,311,375

Liabilities and Shareholders’ Equity
Other liabilities
$
6,378

$
9,196

Total liabilities
6,378

9,196

Shareholders’ equity:
Common stock
4

4

Capital surplus
982,009

954,644

Retained earnings
2,704,121

2,530,837

Treasury stock
(477,165
)
(239,979
)
Accumulated other comprehensive income
21,587

56,673

Total shareholders’ equity
3,230,556

3,302,179

Total liabilities and shareholders’ equity
$
3,236,934

$
3,311,375



Statements of Earnings
(In thousands)
Year Ended December 31,
2015
2014
2013
Dividends, interest and fees received from subsidiaries
$
150,308

$
75,412

$
225,340

Other revenue
1,279

1,572

3,341

Total revenue
151,587

76,984

228,681

Interest expense
131

293

292

Charitable contributions to BOKF Foundation

2,420

2,062

Professional fees and services
378

600

811

Other operating expense
1,864

1,556

1,210

Total expense
2,373

4,869

4,375

Income before taxes and equity in undistributed income of subsidiaries
149,214

72,115

224,306

Federal and state income taxes
(375
)
(1,702
)
(1,578
)
Income before equity in undistributed income of subsidiaries
149,589

73,817

225,884

Equity in undistributed income of subsidiaries
138,976

218,618

90,725

Net income attributable to BOK Financial Corp. shareholders
$
288,565

$
292,435

$
316,609



168



Statements of Cash Flows
(In thousands)
Year Ended December 31,
2015
2014
2013
Cash Flows From Operating Activities:
Net income
$
288,565

$
292,435

$
316,609

Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed income of subsidiaries
(138,976
)
(218,618
)
(90,725
)
Tax effect from equity compensation, net
(925
)
(8,258
)
(2,210
)
Change in other assets
49

8,726

(8,308
)
Change in other liabilities
(2,818
)
1,055

4,263

Net cash provided by operating activities
145,895

75,340

219,629

Cash Flows From Investing Activities:
Proceeds from sales of available for sale securities
4,760


13,600

Investment in subsidiaries
(41,969
)
(15,336
)
(36,000
)
Acquisitions, net of cash acquired


(7,500
)
Net cash used in investing activities
(37,209
)
(15,336
)
(29,900
)
Cash Flows From Financing Activities:
Issuance of common and treasury stock, net
6,711

4,472

16,566

Tax effect from equity compensation, net
925

8,258

2,210

Dividends paid
(115,281
)
(111,026
)
(104,722
)
Repurchase of common stock
(229,540
)
(12,337
)

Net cash used in financing activities
(337,185
)
(110,633
)
(85,946
)
Net increase (decrease) in cash and cash equivalents
(228,499
)
(50,629
)
103,783

Cash and cash equivalents at beginning of period
510,668

561,297

457,514

Cash and cash equivalents at end of period
$
282,169

$
510,668

$
561,297

Cash paid for interest
$
131

$
293

$
292

Issuance of shares in settlement of deferred compensation, net
$

$
8,352

$

( 20 ) Subsequent Events

The Company evaluated events from the date of the consolidated financial statements on December 31, 2015 through the issuance of those consolidated financial statements included in this Annual Report on Form 10-K. Except as disclosed in Notes 6 and 14, no events were identified requiring recognition in and/or disclosure in the consolidated financial statements.

169



Annual Financial Summary – Unaudited
Consolidated Daily Average Balances, Average Yields and Rates
(Dollars in Thousands, Except Per Share Data)
Year Ended
December 31, 2015
Average
Balance
Revenue/
Expense
Yield/
Rate
Assets
Interest-bearing cash and cash equivalents
$
2,031,403

$
5,580

0.27
%
Trading securities
149,572

3,055

2.49
%
Investment securities
Taxable
236,193

12,932

5.48
%
Tax-exempt
386,122

5,971

1.55
%
Total investment securities
622,315

18,903

3.04
%
Available for sale securities
Taxable
8,937,418

172,582

1.97
%
Tax-exempt
81,469

3,341

4.25
%
Total available for sale securities
9,018,887

175,923

1.99
%
Fair value option securities
426,461

9,264

2.26
%
Restricted equity securities
230,140

13,532

5.88
%
Residential mortgage loans held for sale
380,979

13,602

3.59
%
Loans
15,063,002

539,426

3.58
%
Allowance for loan losses
(200,872
)
Loans, net of allowance
14,862,130

539,426

3.63
%
Total earning assets
27,721,887

779,285

2.84
%
Receivable on unsettled securities sales
80,079

Cash and other assets
2,772,789

Total assets
$
30,574,755

Liabilities and equity
Interest-bearing deposits:
Transaction
$
9,919,913

$
8,821

0.09
%
Savings
377,497

383

0.10
%
Time
2,587,367

34,966

1.35
%
Total interest-bearing deposits
12,884,777

44,170

0.34
%
Funds purchased
69,149

65

0.09
%
Repurchase agreements
766,410

282

0.04
%
Other borrowings
4,212,417

13,857

0.33
%
Subordinated debentures
276,662

5,100

1.84
%
Total interest-bearing liabilities
18,209,415

63,474

0.35
%
Non-interest bearing demand deposits
8,048,469

Due on unsettled securities purchases
173,743

Other liabilities
769,823

Total equity
3,373,305

Total liabilities and equity
$
30,574,755

Tax-equivalent Net Interest Revenue
$
715,811

2.49
%
Tax-equivalent Net Interest Revenue to Earning Assets
2.60
%
Less tax-equivalent adjustment
12,457

Net Interest Revenue
703,354

Provision for credit losses
34,000

Other operating revenue
666,853

Other operating expense
904,564

Net income before taxes
431,643

Federal and state income taxes
139,384

Net income
292,259

Net income attributable to non-controlling interests
3,694

Net income attributable to BOK Financial Corporation shareholders
$
288,565

Earnings Per Average Common Share Equivalent:



Net income:



Basic

$
4.22


Diluted

$
4.21


Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented.The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also include average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield/rate calculations are generally based on the conventions that determine how interest income and expense is accrued.

170



Annual Financial Summary – Unaudited (continued)
Consolidated Daily Average Balances, Average Yields and Rates
(Dollars in Thousands, Except Per Share Data)
Year Ended
December 31, 2014
December 31, 2013
Average
Balance
Revenue/
Expense
Yield/
Rate
Average
Balance
Revenue/
Expense
Yield/
Rate
Assets
Interest-bearing cash and cash equivalents
$
1,127,664

$
2,749

0.24
%
$
503,603

$
1,075

0.21
%
Trading securities
120,415

2,520

2.57
%
148,816

2,696

1.81
%
Investment securities
Taxable
233,105

13,183

5.66
%
244,750

14,260

5.83
%
Tax-exempt
422,507

6,785

1.61
%
365,543

6,324

1.82
%
Total investment securities
655,612

19,968

3.05
%
610,293

20,584

3.48
%
Available for sale securities
Taxable
9,546,366

182,923

1.94
%
10,717,416

204,830

1.96
%
Tax-exempt
92,438

3,321

3.73
%
116,066

3,498

3.13
%
Total available for sale securities
9,638,804

186,244

1.95
%
10,833,482

208,328

1.97
%
Fair value option securities
183,206

3,611

2.05
%
200,888

3,907

1.97
%
Restricted equity securities
127,161

7,040

5.54
%
126,127

5,071

4.02
%
Residential mortgage loans held for sale
259,809

10,143

3.93
%
230,588

8,505

3.73
%
Loans
13,406,118

510,916

3.81
%
12,342,333

505,503

4.10
%
Allowance for loan losses
(189,574
)
(203,874
)
Loans, net of allowance
13,216,544

510,916

3.87
%
12,138,459

505,503

4.16
%
Total earning assets
25,329,215

743,191

2.95
%
24,792,256

755,669

3.09
%
Receivable on unsettled securities sales
88,784

121,540

Cash and other assets
2,580,859

2,467,298

Total assets
$
27,998,858

$
27,381,094

Liabilities and equity
Interest-bearing deposits:
Transaction
$
9,737,795

$
9,757

0.10
%
$
9,524,008

$
11,155

0.12
%
Savings
345,183

401

0.12
%
313,280

442

0.14
%
Time
2,644,847

40,525

1.53
%
2,795,676

43,967

1.57
%
Total interest-bearing deposits
12,727,825

50,683

0.40
%
12,632,964

55,564

0.44
%
Funds purchased
494,220

341

0.07
%
866,062

848

0.10
%
Repurchase agreements
928,767

583

0.06
%
811,996

503

0.06
%
Other borrowings
1,928,742

6,748

0.35
%
1,693,993

5,238

0.31
%
Subordinated debentures
347,892

8,690

2.50
%
347,717

8,741

2.51
%
Total interest-bearing liabilities
16,427,446

67,045

0.41
%
16,352,732

70,894

0.43
%
Non-interest bearing demand deposits
7,687,333

7,090,319

Due on unsettled securities purchases
136,360

313,082

Other liabilities
536,958

613,879

Total equity
3,210,761

3,011,082

Total liabilities and equity
$
27,998,858

$
27,381,094

Tax-equivalent Net Interest Revenue
$
676,146

2.54
%
$
684,775

2.66
%
Tax-equivalent Net Interest Revenue to Earning Assets
2.68
%
2.80
%
Less tax-equivalent adjustment
10,952

10,298

Net Interest Revenue
665,194

674,477

Provision for credit losses

(27,900
)
Other operating revenue
621,958

614,472

Other operating expense
847,522

840,620

Net income before taxes
439,630

476,229

Federal and state income taxes
144,151

157,298

Net income
295,479

318,931

Net income attributable to non-controlling interests
3,044

2,322

Net income attributable to BOK Financial Corporation shareholders
$
292,435

$
316,609

Earnings Per Average Common Share Equivalent:



Net income:



Basic

$
4.23


$
4.61

Diluted

$
4.22


$
4.59


171



Quarterly Financial Summary – Unaudited
Consolidated Daily Average Balances, Average Yields and Rates
(In Thousands, Except Per Share Data)
Three Months Ended
December 31, 2015
September 30, 2015
Average
Balance
Revenue/
Expense
Yield/
Rate
Average
Balance
Revenue/
Expense
Yield/
Rate
Assets
Interest-bearing cash and cash equivalents
$
1,995,945

$
1,466

0.29
%
$
2,038,611

$
1,442

0.28
%
Trading securities
150,402

840

2.86
%
179,098

945

2.70
%
Investment securities
Taxable
232,566

3,144

5.41
%
233,914

3,211

5.49
%
Tax-exempt
369,803

1,413

1.53
%
382,177

1,468

1.54
%
Total investment securities
602,369

4,557

3.03
%
616,091

4,679

3.04
%
Available for sale securities






Taxable
8,894,019

43,649

2.02
%
8,862,917

43,473

1.99
%
Tax-exempt
77,071

786

4.22
%
79,344

796

4.15
%
Total available for sale securities
8,971,090

44,435

2.04
%
8,942,261

44,269

2.01
%
Fair value option securities
435,449

2,461

2.32
%
429,951

2,480

2.30
%
Restricted equity securities
262,461

3,905

5.95
%
255,610

3,802

5.95
%
Residential mortgage loans held for sale
310,425

2,968

3.85
%
401,359

3,793

3.79
%
Loans
15,586,998

139,372

3.55
%
15,192,311

135,498

3.54
%
Allowance for loan losses
(207,156
)
(202,829
)
Loans, net of allowance
15,379,842

139,372

3.60
%
14,989,482

135,498

3.59
%
Total earning assets
28,107,983

200,004

2.86
%
27,852,463

196,908

2.83
%
Receivable on unsettled securities sales
62,228

64,591

Cash and other assets
2,909,965

2,852,679

Total assets
$
31,080,176

$
30,769,733

Liabilities and equity






Interest-bearing deposits:






Transaction
$
9,527,491

$
2,098

0.09
%
$
9,760,839

$
2,061

0.08
%
Savings
382,284

89

0.09
%
379,828

97

0.10
%
Time
2,482,714

7,881

1.26
%
2,557,874

8,573

1.33
%
Total interest-bearing deposits
12,392,489

10,068

0.32
%
12,698,541

10,731

0.34
%
Funds purchased
73,220

21

0.11
%
70,281

15

0.08
%
Repurchase agreements
623,921

68

0.04
%
672,085

49

0.03
%
Other borrowings
4,957,175

4,720

0.38
%
4,779,981

3,637

0.30
%
Subordinated debentures
226,332

644

1.13
%
226,296

596

1.04
%
Total interest-bearing liabilities
18,273,137

15,521

0.34
%
18,447,184

15,028

0.32
%
Non-interest bearing demand deposits
8,312,961

7,994,607

Due on unsettled securities purchases
248,811

90,135

Other liabilities
884,652

838,612

Total equity
3,360,615

3,399,195

Total liabilities and equity
$
31,080,176

$
30,769,733

Tax-equivalent Net Interest Revenue
$
184,483

2.52
%
$
181,880

2.51
%
Tax-equivalent Net Interest Revenue to Earning Assets
2.64
%
2.61
%
Less tax-equivalent adjustment
3,222

3,244

Net Interest Revenue
181,261

178,636

Provision for credit losses
22,500

7,500

Other operating revenue
161,115

163,436

Other operating expense
232,558

224,628

Net income before taxes
87,318

109,944

Federal and state income taxes
26,242

34,128

Net income
61,076

75,816

Net income attributable to non-controlling interests
1,475

925

Net income attributable to BOK Financial Corp. shareholders
$
59,601

$
74,891

Earnings Per Average Common Share Equivalent:





Net income:






Basic

$
0.89



$
1.09


Diluted

$
0.89



$
1.09


Yield calculations are shown on a tax equivalent at the statutory federal and state rates for the periods presented.The yield calculations exclude security trades that have been recorded on trade date with no corresponding interest income and the unrealized gains and losses. The yield calculation also include average loan balances for which the accrual of interest has been discontinued and are net of unearned income. Yield/rate calculations are generally based on the conventions that determine how interest income and expense is accrued

172



Quarterly Financial Summary – Unaudited (continued)
Consolidated Daily Average Balances, Average Yields and Rates
Three Months Ended
June 30, 2015
March 31, 2015
December 31, 2014
Average Balance
Revenue /Expense
Yield / Rate
Average Balance
Revenue / Expense
Yield / Rate
Average Balance
Revenue / Expense
Yield / Rate
$
2,002,456

$
1,250

0.25
%
$
2,089,546

$
1,422

0.27
%
$
2,090,176

$
1,500

0.28
%
127,391

585

1.85
%
140,968

685

2.55
%
164,502

901

2.48
%
236,956

3,251

5.49
%
241,458

3,326

5.51
%
244,395

3,468

5.68
%
391,533

1,526

1.56
%
401,367

1,564

1.56
%
406,516

1,586

1.56
%
628,489

4,777

3.05
%
642,825

4,890

3.04
%
650,911

5,054

3.11
%
8,980,312

42,355

1.92
%
9,014,566

43,105

1.95
%
9,073,467

43,953

1.97
%
82,694

838

4.21
%
86,899

921

4.40
%
88,434

904

4.23
%
9,063,006

43,193

1.94
%
9,101,464

44,026

1.98
%
9,161,901

44,857

1.99
%
435,294

2,320

2.17
%
404,775

2,003

2.28
%
221,773

1,053

2.18
%
221,911

3,228

5.82
%
179,385

2,597

5.79
%
182,737

2,635

5.77
%
464,269

3,892

3.37
%
348,054

2,949

3.41
%
321,746

3,101

3.87
%
14,905,352

135,603

3.65
%
14,554,582

128,953

3.59
%
13,882,005

130,378

3.73
%
(198,400
)
(194,948
)
(190,787
)
14,706,952

135,603

3.70
%
14,359,634

128,953

3.64
%
13,691,218

130,378

3.78
%
27,649,768

194,848

2.84
%
27,266,651

187,525

2.80
%
26,484,964

189,479

2.86
%
94,374

99,706

69,109

2,719,930

2,604,347

2,578,124

$
30,464,072

$
29,970,704

$
29,132,197

$
10,063,589

$
2,197

0.09
%
$
10,338,396

$
2,465

0.10
%
$
9,730,564

$
2,328

0.09
%
381,833

103

0.11
%
365,835

94

0.10
%
346,132

96

0.11
%
2,651,820

8,966

1.36
%
2,659,323

9,546

1.46
%
2,647,147

9,777

1.47
%
13,097,242

11,266

0.35
%
13,363,554

12,105

0.37
%
12,723,843

12,201

0.38
%
63,312

13

0.08
%
69,730

16

0.09
%
71,728

14

0.08
%
773,977

61

0.03
%
1,000,839

104

0.04
%
996,308

109

0.04
%
4,001,479

3,047

0.31
%
3,084,214

2,453

0.32
%
3,021,094

2,443

0.32
%
307,903

1,695

2.21
%
348,007

2,165

2.52
%
347,960

2,189

2.50
%
18,243,913

16,082

0.35
%
17,866,344

16,843

0.38
%
17,160,933

16,956

0.39
%
7,996,717

7,885,485

7,974,165

151,369

205,096

137,566

690,604

662,218

549,388

3,381,469

3,351,561

3,310,145

$
30,464,072

$
29,970,704

$
29,132,197

$
178,766

2.49
%
$
170,682

2.42
%
$
172,523

2.47
%
2.61
%
2.55
%
2.61
%
3,035

2,956

2,859

175,731

167,726

169,664

4,000



176,285

166,017

151,903

227,113

220,265

225,877

120,903

113,478

95,690

40,630

38,384

30,109

80,273

75,094

65,581

1,043

251

1,263

$
79,230

$
74,843

$
64,318


$
1.15



$
1.08



$
0.93



$
1.15



$
1.08



$
0.93



173



ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.
ITEM 9A.  CONTROLS AND PROCEDURES
As of the end of the period covered by this report and pursuant to Rule 13a-15 of the Securities Exchange Act of 1934 (the “Exchange Act”), the Company's management, including the Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness and design of the Company's disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act). Based upon that evaluation, the Company's Chief Executive Officer and Chief Financial Officer concluded, as of the end of the period covered by this report, that the Company's disclosure controls and procedures were effective in recording, processing, summarizing and reporting information required to be disclosed by the Company, within the time periods specified in the Securities and Exchange Commission's rules and forms.
In addition and as of the end of the period covered by this report, there have been no changes in internal control over financial reporting (as defined in Rule 13a-15(f) and 15d-15(f), as amended, of the Exchange Act) during the Company's fourth fiscal quarter that have materially affected, or are reasonably likely to materially affect, the internal control over financial reporting.

The Report of Management on Financial Statements and Management's Report on Internal Control over Financial Reporting appear within Item 8, “Financial Statements and Supplementary Data.” The independent registered public accounting firm, Ernst & Young LLP, has audited the financial statements included in Item 8 and has issued an audit report on the Company's internal control over financial reporting, which appears therein.
ITEM 9B.  OTHER INFORMATION

None.
PART III
ITEM 10.  DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information set forth under the headings “Election of Directors,” “Executive Officers, “Insider Reporting,” “Director Nominations,” and “Risk Oversight and Audit Committee” in BOK Financial's 2016 Annual Proxy Statement is incorporated herein by reference.

The Company has a Code of Ethics which is applicable to all Directors, officers and employees of the Company, including the Chief Executive Officer and the Chief Financial Officer, the principal executive officer and principal financial and accounting officer, respectively. A copy of the Code of Ethics will be provided without charge to any person who requests it by writing to the Company's headquarters at Bank of Oklahoma Tower, P.O. Box 2300, Tulsa, Oklahoma 74192 or telephoning the Chief Auditor at (918) 588-6000. The Company will also make available amendments to or waivers from its Code of Ethics applicable to Directors or executive officers, including the Chief Executive Officer and the Chief Financial Officer, in accordance with all applicable laws and regulations.

There are no material changes to the procedures by which security holders may recommend nominees to the Company's board of directors since the Company's 2015 Annual Proxy Statement to Shareholders.
ITEM 11.  EXECUTIVE COMPENSATION

The information set forth under the heading “Compensation Discussion and Analysis,” “Compensation Committee Interlocks and Insider Participation, “Compensation Committee Report,” “Executive Compensation Tables,” and “Director Compensation” in BOK Financial's 2016 Annual Proxy Statement is incorporated herein by reference.

174



ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information set forth under the headings “Security Ownership of Certain Beneficial Owners and Management” and “Election of Directors” in BOK Financial's 2016 Annual Proxy Statement is incorporated herein by reference.
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

Information regarding related parties is set forth in Note 13 of the Company's Notes to Consolidated Financial Statements, which appears elsewhere herein. Additionally, the information set forth under the headings “Certain Transactions,” “Director Independence” and “Related Party Transaction Review and Approval Process” in BOK Financial's 2016 Annual Proxy Statement is incorporated herein by reference.
ITEM 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information set forth under the heading “Principal Accountant Fees and Services” in BOK Financial's 2016 Annual Proxy Statement is incorporated herein by reference.
PART IV
ITEM 15.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) (1)    Financial Statements

The following financial statements of BOK Financial Corporation are filed as part of this Form 10-K in Item 8:

Consolidated Statements of Earnings for the years ended December 31, 2015 , 2014 and 2013
Consolidated Statements of Comprehensive Income for the years ended December 31, 2015 , 2014 and 2013
Consolidated Balance Sheets as of December 31, 2015 and 2014
Consolidated Statements of Cash Flows for the years ended December 31, 2015 , 2014 and 2013
Consolidated Statements of Changes in Equity for the years ended December 31, 2015 , 2014 and 2013
Notes to Consolidated Financial Statements
Annual Financial Summary - Unaudited
Quarterly Financial Summary - Unaudited
Reports of Independent Registered Public Accounting Firm

(a) (2)    Financial Statement Schedules

The schedules to the consolidated financial statements required by Regulation S-X are not required under the related instructions or are inapplicable and are therefore omitted.



175



(a) (3)    Exhibits

Exhibit Number
Description of Exhibit
3.0
The Articles of Incorporation of BOK Financial, incorporated by reference to (i) Amended and Restated Certificate of Incorporation of BOK Financial filed with the Oklahoma Secretary of State on May 28, 1991, filed as Exhibit 3.0 to S-1 Registration Statement No. 33-90450, and (ii) Amendment attached as Exhibit A to Information Statement and Prospectus Supplement filed November 20, 1991.
3.1
Bylaws of BOK Financial, incorporated by reference to Exhibit 3.1 of S-1 Registration Statement No. 33-90450.
3.1(a)
Bylaws of BOK Financial, as amended and restated as of October 30, 2007, incorporated by reference to Exhibit 3.1 of Form 8-K filed on November 5, 2007.
4.0
The rights of the holders of the Common Stock and Preferred Stock of BOK Financial are set forth in its Certificate of Incorporation.
10.0
Purchase and Sale Agreement dated October 25, 1990, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.0 of S-1 Registration Statement No. 33-90450.
10.1
Amendment to Purchase and Sale Agreement effective March 29, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.2 of S-1 Registration Statement No. 33-90450.
10.2
Letter agreement dated April 12, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.3 of S-1 Registration Statement No. 33-90450.
10.3
Second Amendment to Purchase and Sale Agreement effective April 15, 1991, among BOK Financial, Kaiser, and the FDIC, incorporated by reference to Exhibit 2.4 of S-1 Registration Statement No. 33-90450.
10.4
Employment and Compensation Agreements.
10.4.2
Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between Steven G. Bradshaw and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.2 of Form 10-K for the fiscal year ended December 31, 2003.
10.4.2 (a)
409A Deferred Compensation Agreement between Steven G. Bradshaw and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.2 (a) of Form 8-K filed on January 5, 2005.
10.4.2 (b)
Employment Agreement between BOK Financial and Steven G. Bradshaw dated September 29, 2003, incorporated by reference to Exhibit 10.4.2 (b) of Form 10-K for the fiscal year ended December 31, 2004.
10.4.2 (c)
Amended and Restated Employment Agreement (amended as of June 30, 2013) between BOK Financial and Steven G. Bradshaw, incorporated by reference to Exhibit 99.A of Form 8-K filed August 20, 2013.
10.4.5
409A Deferred Compensation Agreement between Daniel H. Ellinor and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.5 of Form 8-K filed on January 5, 2005.
10.4.5 (a)
Employment Agreement between BOK Financial and Dan H. Ellinor dated August 29, 2003, incorporated by reference to Exhibit 10.4.5 (a) of Form 10-K for the fiscal year ended December 31, 2004.
10.4.5 (b)
Deferred Compensation Agreement dated November 28, 2003 between Daniel H. Ellinor and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.5 (b) of Form 10-K for the fiscal year ended December 31, 2004.
10.4.5 (c)
Amended and Restated Employment Agreement (amended as of June 15, 2013) between BOK Financial and Daniel Ellinor, incorporated by reference to Exhibit 99.B of Form 8-K filed August 20, 2013.
10.4.7
409A Deferred Compensation Agreement between Steven E. Nell and BOK Financial Corporation dated December 31, 2004, incorporated by reference to Exhibit 10.4.7 of Form 8-K filed on January 5, 2005.
10.4.7 (a)
Amended and Restated Deferred Compensation Agreement (Amended as of December 1, 2003) between Steven E. Nell and BOK Financial Corporation, incorporated by reference to Exhibit 10.4.7 (a) of Form 10-K for the fiscal year ended December 31, 2004.

176



Exhibit Number
Description of Exhibit
10.4.7 (b)
Amended and Restated Employment Agreement (amended June 15, 2013) between BOK Financial and Steven Nell incorporated by reference to Exhibit 99.B of Form 8-K filed September 4, 2013.
10.4.8
Employment Agreement dated August 1, 2005 between BOK Financial Corporation and Donald T. Parker, incorporated by reference to Exhibit 99 (a) of Form 8-K filed on February 1, 2006.
10.4.8 (a)
Amended and Restated Employment Agreement Dated June 15, 2013 between BOK Financial and Donald T. Parker, incoporated by reference to Exhibit 10.4.8(a) of Form 10-K filed on February 27, 2015.
10.4.9
Employment Agreement dated April 4, 2008 between Bank of Texas, NA, and Norman P. Bagwell, incorporated by reference to Exhibit 10.4.9 of Form 10-K filed on February 27, 2013.
10.4.9 (a)
First Amendment of Employment Agreement dated June 30, 2011 between Bank of Texas, a division of BOKF, NA, and Norman P. Bagwell, incorporated by reference to Exhibit 10.4.9 (a) of Form 10-K filed on February 27, 2013.
10.4.9 (b)
Amended and Restated Employment Agreement (amended as of June 15, 2013) between BOK Financial and Norman Bagwell, incorporated by reference to Exhibit 99.A of Form 8-K filed September 4, 2013.
10.4.10
Amended and Restated Employment Agreement (amended as of June 15, 2013) between BOK Financial and Stacy C. Kymes, filed herewith.
10.6
Capitalization and Stock Purchase Agreement dated May 20, 1991, between BOK Financial and Kaiser, incorporated by reference to Exhibit 10.6 of S-1 Registration Statement No. 33-90450.
10.7.7
BOK Financial Corporation 2001 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-62578.
10.7.8
BOK Financial Corporation Directors' Stock Compensation Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 33-79836.
10.7.9
Bank of Oklahoma Thrift Plan (Amended and Restated Effective as of January 1, 1995), incorporated by reference to Exhibit 10.7.6 of Form 10-K for the year ended December 31, 1994.
10.7.10
Trust Agreement for the Bank of Oklahoma Thrift Plan (December 30, 1994), incorporated by reference to Exhibit 10.7.7 of Form 10-K for the year ended December 31, 1994.
10.7.11
BOK Financial Corporation 2003 Stock Option Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-106531.
10.7.12
BOK Financial Corporation 2003 Executive Incentive Plan, incorporated by reference to Exhibit 4.0 of S-8 Registration Statement No. 333-106530.
10.7.13
10b5-1 Repurchase Plan between BOK Financial Corporation and BOSC, Inc. dated May 27, 2008, incorporated by reference to Exhibit 10.1 of Form 8-K filed May 27, 2008.
10.7.14
BOK Financial Corporation 2003 Executive Incentive Plan, as amended and restated, for the Chief Executive Officer and for Direct Reports to the Chief Executive Officer, incorporated by reference to the Schedule 14 A Definitive Proxy Statement filed on March 15, 2011.
10.7.16
BOK Financial Corporation 2009 Omnibus Incentive Plan, Amended and Restated effective April 30, 2013, incorporated by reference to the Schedule 14A Definitive Proxy Statement filed on March 20, 2013.
10.8
Lease Agreement between One Williams Center Co. and National Bank of Tulsa (predecessor to BOk) dated June 18, 1974, incorporated by reference to Exhibit 10.9 of S-1 Registration Statement No. 33-90450.
10.9
Lease Agreement between Security Capital Real Estate Fund and BOk dated January 1, 1988, incorporated by reference to Exhibit 10.10 of S-1 Registration Statement No. 33-90450.
21
Subsidiaries of BOK Financial, filed herewith.
23
Consent of independent registered public accounting firm - Ernst & Young LLP, filed herewith.

177



Exhibit Number
Description of Exhibit
31.1
Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
31.2
Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002, filed herewith.
32
Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, filed herewith.
99
Additional Exhibits.
101
Interactive data files pursuant to Rule 405 of Regulation S-T: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Earnings, (iii) the Consolidated Statements of Changes in Equity, (iv) the Consolidated Statement of Cash Flows and (v) the Notes to the Consolidated Financial Statements, filed herewith.

(b)    Exhibits

See Item 15 (a) (3) above.


(c)    Financial Statement Schedules

See Item 15 (a) (2) above.

178




SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

BOK FINANCIAL CORPORATION

DATE: February 29, 2016 BY: /s/ George B. Kaiser
George B. Kaiser                        Chairman of the Board of Directors

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below on February 29, 2016 , by the following persons on behalf of the registrant and in the capacities indicated.

OFFICERS


/s/ George B. Kaiser
/s/ Steven G. Bradshaw
George B. Kaiser
Chairman of the Board of Directors

Steven G. Bradshaw
Director, President and Chief Executive Officer



/s/ Steven E. Nell
/s/ John C. Morrow
Steven E. Nell
Executive Vice President and
Chief Financial Officer
John C. Morrow
Senior Vice President and
Chief Accounting Officer


179



DIRECTORS

/s/ Alan S. Armstrong
/s/ Kimberley D. Henry
Alan S. Armstrong

Kimberley D. Henry
/s/ E. Carey Joullian, IV
C. Frederick Ball, Jr.

E. Carey Joullian, IV
/s/ Sharon J. Bell
/s/ Robert J. LaFortune
Sharon J. Bell
Robert J. LaFortune
/s/ Peter C. Boylan, III
Peter C. Boylan, III
Stanley A. Lybarger
/s/ Chester E. Cadieux, III
/s/ Steven J. Malcolm
Chester E. Cadieux, III
Steven J. Malcolm
/s/ Joseph W. Craft, III
/s/ Emmet C. Richards
Joseph W. Craft, III
Emmet C. Richards
/s/ John W. Gibson
John W. Gibson
John Richels
/s/ David F. Griffin
David F. Griffin
Michael C. Turpen
/s/ V. Burns Hargis
V. Burns Hargis

R.A. Walker
Douglas D. Hawthorne


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