MAIN 10-Q Quarterly Report Sept. 30, 2016

MAIN STREET CAPITAL CORP

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TABLE OF CONTENTS

Table of Contents

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

FORM 10-Q


(Mark One)
ý		QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended September 30, 2016
OR
o		TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from: to

Commission File Number: 001-33723

Main Street Capital Corporation
(Exact name of registrant as specified in its charter)


Maryland (State or other jurisdiction of incorporation or organization)		41-2230745 (I.R.S. Employer Identification No.)
1300 Post Oak Boulevard, 8 ^th floor Houston, TX (Address of principal executive offices)		77056 (Zip Code)

(713) 350-6000
(Registrant's telephone number including area code)

n/a
(Former name, former address and former fiscal year, if changed since last report)

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 o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, 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 o No o

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 the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. (Check one):


Large accelerated filer ý		Accelerated filer o		Non-accelerated filer o		Smaller reporting company o

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

The number of shares outstanding of the issuer's common stock as of November 3, 2016 was 53,036,148.

Table of Contents

TABLE OF CONTENTS

PART I
FINANCIAL INFORMATION


Item 1.	Consolidated Financial Statements
	Consolidated Balance Sheets—September 30, 2016 (unaudited) and December 31, 2015	1
	Consolidated Statements of Operations (unaudited)—Three and nine months ended September 30, 2016 and 2015	2
	Consolidated Statements of Changes in Net Assets (unaudited)—Nine months ended September 30, 2016 and 2015	3
	Consolidated Statements of Cash Flows (unaudited)—Nine months ended September 30, 2016 and 2015	4
	Consolidated Schedule of Investments (unaudited)—September 30, 2016	5
	Consolidated Schedule of Investments—December 31, 2015	33
	Notes to Consolidated Financial Statements (unaudited)	60
	Consolidated Financial Statement Schedule
	Consolidated Schedule of Investments in and Advances to Affiliates for the Nine Months Ended September 30, 2016	104
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	109
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	133
Item 4.	Controls and Procedures	134

PART II
OTHER INFORMATION


Item 1.	Legal Proceedings	135
Item 1A.	Risk Factors	135
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	135
Item 6.	Exhibits	135
	Signatures	136

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Balance Sheets

(dollars in thousands, except shares and per share amounts)

	September 30, 2016			December 31, 2015

	(Unaudited)
ASSETS
Portfolio investments at fair value:
Control investments (cost: $401,190 and $387,727 as of September 30, 2016 and December 31, 2015, respectively)	$	547,651		$	555,011
Affiliate investments (cost: $368,553 and $333,728 as of September 30, 2016 and December 31, 2015, respectively)		352,873			350,519
Non-Control/Non-Affiliate investments (cost: $1,046,923 and $945,187 as of September 30, 2016 and December 31, 2015, respectively)		1,019,743			894,466

Total portfolio investments (cost: $1,816,666 and $1,666,642 as of September 30, 2016 and December 31, 2015, respectively)		1,920,267			1,799,996
Marketable securities and idle funds investments (cost: $0 and $5,407 as of September 30, 2016 and December 31, 2015, respectively)		—			3,693

Total investments (cost: $1,816,666 and $1,672,049 as of September 30, 2016 and December 31, 2015, respectively)		1,920,267			1,803,689
Cash and cash equivalents		31,782			20,331
Interest receivable and other assets		33,500			27,737
Receivable for securities sold		503			9,901
Deferred financing costs (net of accumulated amortization of $10,896 and $8,965 as of September 30, 2016 and December 31, 2015, respectively)		12,259			13,267
Deferred tax asset, net		9,199			4,003

Total assets	$	2,007,510		$	1,878,928



LIABILITIES
Credit facility	$	313,000		$	291,000
SBIC debentures (par: $231,000 ($15,000 due within one year) and $225,000 as of September 30, 2016 and December 31, 2015, respectively. Par of $75,200 is recorded at a fair value of $74,680 and $73,860 as of September 30, 2016 and December 31, 2015, respectively)		230,480			223,660
4.50% Notes		175,000			175,000
6.125% Notes		90,655			90,738
Accounts payable and other liabilities		11,581			12,292
Payable for securities purchased		29,100			2,311
Interest payable		3,561			3,959
Dividend payable		9,783			9,074

Total liabilities		863,160			808,034
Commitments and contingencies (Note M)
NET ASSETS
Common stock, $0.01 par value per share (150,000,000 shares authorized; 52,901,113 and 50,413,744 shares issued and outstanding as of September 30, 2016 and December 31, 2015, respectively)		529			504
Additional paid-in capital		1,090,197			1,011,467
Accumulated net investment income, net of cumulative dividends of $471,478 and $417,347 as of September 30, 2016 and December 31, 2015, respectively		38,421			7,181
Accumulated net realized gain from investments (accumulated net realized gain from investments of $52,352 before cumulative dividends of $112,539 as of September 30, 2016 and accumulated net realized gain from investments of $19,005 before cumulative dividends of $68,658 as of December 31, 2015)		(60,187	)		(49,653	)
Net unrealized appreciation, net of income taxes		75,390			101,395

Total net assets		1,144,350			1,070,894

Total liabilities and net assets	$	2,007,510		$	1,878,928



NET ASSET VALUE PER SHARE	$	21.62		$	21.24

The accompanying notes are an integral part of these financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Operations

(dollars in thousands, except shares and per share amounts)

(Unaudited)

	Three Months Ended September 30,						Nine Months Ended September 30,

	2016			2015			2016			2015
INVESTMENT INCOME:
Interest, fee and dividend income:
Control investments	$	14,826		$	13,437		$	40,398		$	36,264
Affiliate investments		9,619			6,852			27,095			19,862
Non-Control/Non-Affiliate investments		22,149			22,090			63,841			64,124

Interest, fee and dividend income		46,594			42,379			131,334			120,250
Interest, fee and dividend income from marketable securities and idle funds investments		5			229			174			846

Total investment income		46,599			42,608			131,508			121,096
EXPENSES:
Interest		(8,573	)		(8,302	)		(25,010	)		(23,755	)
Compensation		(4,309	)		(3,727	)		(12,081	)		(11,055	)
General and administrative		(2,247	)		(2,212	)		(6,808	)		(6,271	)
Share-based compensation		(2,137	)		(1,651	)		(5,977	)		(4,592	)
Expenses allocated to the External Investment Manager		1,224			1,145			3,739			3,133

Total expenses		(16,042	)		(14,747	)		(46,137	)		(42,540	)

NET INVESTMENT INCOME		30,557			27,861			85,371			78,556
NET REALIZED GAIN (LOSS):
Control investments		17,862			—			32,220			3,324
Affiliate investments		(3,447	)		5,964			25,260			5,827
Non-Control/Non-Affiliate investments		(10,033	)		(6,195	)		(22,452	)		(16,836	)
Marketable securities and idle funds investments		(96	)		(1,112	)		(1,681	)		(1,352	)

Total net realized gain (loss)		4,286			(1,343	)		33,347			(9,037	)

NET CHANGE IN UNREALIZED APPRECIATION (DEPRECIATION):
Portfolio investments		8,376			(8,389	)		(29,738	)		21,716
Marketable securities and idle funds investments		235			(648	)		1,729			(521	)
SBIC debentures		(801	)		(50	)		(820	)		(823	)

Total net change in unrealized appreciation (depreciation)		7,810			(9,087	)		(28,829	)		20,372

INCOME TAXES:
Federal and state income, excise and other taxes		(904	)		495			(2,372	)		(1,547	)
Deferred taxes		1,432			2,742			3,390			8,551

Income tax benefit		528			3,237			1,018			7,004

NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS	$	43,181		$	20,668		$	90,907		$	96,895



NET INVESTMENT INCOME PER SHARE—BASIC AND DILUTED	$	0.58		$	0.56		$	1.66		$	1.61



NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS PER SHARE—BASIC AND DILUTED	$	0.82		$	0.41		$	1.76		$	1.99



DIVIDENDS PAID PER SHARE:
Regular monthly dividends	$	0.540		$	0.525		$	1.620		$	1.560
Supplemental dividends		—			—			0.275			0.275

Total dividends	$	0.540		$	0.525		$	1.895		$	1.835



WEIGHTED AVERAGE SHARES OUTSTANDING—BASIC AND DILUTED		52,613,277			50,036,776			51,538,745			48,681,260

The accompanying notes are an integral part of these financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Changes in Net Assets

(dollars in thousands, except shares)

(Unaudited)

	Common Stock												Accumulated Net Realized Gain From Investments, Net of Dividends			Net Unrealized Appreciation from Investments, Net of Income Taxes

	Common Stock									Accumulated Net Investment Income, Net of Dividends
	Number of Shares			Par Value			Additional Paid-In Capital			Accumulated Net Investment Income, Net of Dividends									Total Net Asset Value
Balances at December 31, 2014		45,079,150		$	451		$	853,606		$	23,665		$	(20,456	)	$	82,716		$	939,982
Public offering of common stock, net of offering costs		4,370,000			44			127,720			—			—			—			127,764
Share-based compensation		—			—			4,592			—			—			—			4,592
Purchase of vested stock for employee payroll tax withholding		(54,840	)		(1	)		(1,739	)		—			—			—			(1,740	)
Dividend reinvestment		444,957			4			13,654			—			—			—			13,658
Amortization of directors' deferred compensation		—			—			292			—			—			—			292
Issuance of restricted stock, net of forfeited shares		239,911			2			(2	)		—			—			—			—
Dividends to stockholders		—			—			—			(88,294	)		(2,168	)		—			(90,462	)
Net increase (loss) resulting from operations		—			—			—			78,556			(9,037	)		27,376			96,895

Balances at September 30, 2015		50,079,178		$	500		$	998,123		$	13,927		$	(31,661	)	$	110,092		$	1,090,981



Balances at December 31, 2015		50,413,744		$	504		$	1,011,467		$	7,181		$	(49,653	)	$	101,395		$	1,070,894
Public offering of common stock, net of offering costs		1,996,793			20			64,239			—			—			—			64,259
Share-based compensation		—			—			5,977			—			—			—			5,977
Purchase of vested stock for employee payroll tax withholding		(80,750	)		(1	)		(2,592	)		—			—			—			(2,593	)
Dividend reinvestment		339,544			3			10,645			—			—			—			10,648
Amortization of directors' deferred compensation		—			—			464			—			—			—			464
Issuance of restricted stock, net of forfeited shares		262,586			3			(3	)		—			—			—			—
Dividends to stockholders		—			—			—			(54,131	)		(43,881	)		—			(98,012	)
Cumulative-effect to retained earnings for excess tax benefit		—			—			—			—			—			1,806			1,806
Net increase (loss) resulting from operations		—			—			—			85,371			33,347			(27,811	)		90,907

Balances at September 30, 2016		52,931,917		$	529		$	1,090,197		$	38,421		$	(60,187	)	$	75,390		$	1,144,350

The accompanying notes are an integral part of these financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Statements of Cash Flows

(dollars in thousands)

(Unaudited)

	Nine Months Ended September 30,

	2016			2015
CASH FLOWS FROM OPERATING ACTIVITIES
Net increase in net assets resulting from operations	$	90,907		$	96,895
Adjustments to reconcile net increase in net assets resulting from operations to net cash provided by (used in) operating activities:
Investments in portfolio companies		(420,036	)		(727,099	)
Proceeds from sales and repayments of debt investments in portfolio companies		274,907			421,933
Proceeds from sales and return of capital of equity investments in portfolio companies		73,017			29,289
Investments in marketable securities and idle funds investments		(523	)		(4,483	)
Proceeds from sales and repayments of marketable securities and idle funds investments		4,316			7,094
Net change in net unrealized (appreciation) depreciation		28,829			(20,372	)
Net realized (gain) loss		(33,347	)		9,037
Accretion of unearned income		(7,073	)		(6,474	)
Payment-in-kind interest		(4,911	)		(2,485	)
Cumulative dividends		(1,470	)		(1,242	)
Share-based compensation expense		5,977			4,592
Amortization of deferred financing costs		1,931			1,899
Deferred tax benefit		(3,390	)		(8,551	)
Changes in other assets and liabilities:
Interest receivable and other assets		(685	)		(3,493	)
Interest payable		(398	)		147
Accounts payable and other liabilities		(247	)		(1,618	)
Deferred fees and other		1,644			1,438

Net cash provided by (used in) operating activities		9,448			(203,493	)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from public offering of common stock, net of offering costs		64,259			127,764
Dividends paid		(86,655	)		(75,453	)
Proceeds from issuance of SBIC debentures		6,000			—
Proceeds from credit facility		254,000			473,000
Repayments on credit facility		(232,000	)		(345,000	)
Payment of deferred loan costs and SBIC debenture fees		(925	)		(132	)
Purchases of vested stock for employee payroll tax withholding		(2,593	)		(1,740	)
Other		(83	)		(83	)

Net cash provided by financing activities		2,003			178,356

Net increase (decrease) in cash and cash equivalents		11,451			(25,137	)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD		20,331			60,432

CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	31,782		$	35,295



Supplemental cash flow disclosures:
Interest paid	$	23,368		$	21,708
Taxes paid	$	1,762		$	2,504
Non-cash financing activities:
Shares issued pursuant to the DRIP	$	10,648		$	13,658

The accompanying notes are an integral part of these financial statements

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Principal(4)		Cost(4)		Fair Value

Control Investments(5)

Access Media Holdings, LLC(10)	Private Cable Operator
		5% Current / 5% PIK Secured Debt (Maturity—July 22, 2020)	$	22,380	$	22,380	$	19,720
		Preferred Member Units (6,232,500 units; 12% cumulative)				6,126		250
		Member Units (45 units)				1		—

						28,507		19,970

AmeriTech College, LLC	For-Profit Nursing and Healthcare College
		10% Secured Debt (Maturity—November 30, 2019)		1,004		1,004		1,004
		10% Secured Debt (Maturity—January 31, 2020)		3,025		3,025		3,025
		Preferred Member Units (294 units; 5%)(8)				2,291		2,291

						6,320		6,320

ASC Interests, LLC	Recreational and Educational Shooting Facility
		11% Secured Debt (Maturity—July 31, 2018)		2,250		2,230		2,250
		Member Units (1,500 units)(8)				1,500		2,680

						3,730		4,930

Bond-Coat, Inc .	Casing and Tubing Coating Services
		12% Secured Debt (Maturity—December 28, 2017)		11,596		11,547		11,596
		Common Stock (57,508 shares)				6,350		5,090

						17,897		16,686

Café Brazil, LLC	Casual Restaurant Group
		Member Units (1,233 units)(8)				1,742		6,570

CBT Nuggets, LLC	Produces and Sells IT Training Certification Videos
		Member Units (416 units)(8)				1,300		52,800

CMS Minerals Investments	Oil & Gas Exploration & Production
		Preferred Member Units (CMS Minerals LLC) (458 units)(8)				2,207		3,371
		Member Units (CMS Minerals II, LLC) (100 units)(8)				3,955		3,893

						6,162		7,264

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Datacom, LLC	Technology and Telecommunications Provider
		8% Secured Debt (Maturity—May 30, 2017)	900	900	900
		5.25% Current / 5.25% PIK Secured Debt (Maturity—May 30, 2019)	11,558	11,491	10,888
		Class A Preferred Member Units (15% cumulative)(8)		1,181	1,318
		Class B Preferred Member Units (6,453 units)		6,030	1,769

				19,602	14,875

Gamber-Johnson Holdings, LLC	Manufacturer of Ruggedized Computer Mounting Systems
		LIBOR Plus 11.00% (Floor 1.00%), Current Coupon 12.00%, Secured Debt (Maturity—June 24, 2021)(9)	20,000	19,798	19,798
		Member Units (7,040 units)		12,124	12,124

				31,922	31,922

Garreco, LLC	Manufacturer and Supplier of Dental Products
		14% Secured Debt (Maturity—January 12, 2018)	5,550	5,511	5,511
		Member Units (1,200 units)(8)		1,200	1,150

				6,711	6,661

GRT Rubber Technologies LLC	Manufacturer of Engineered Rubber Products
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—December 19, 2019)(9)	13,484	13,390	13,484
		Member Units (5,879 units)(8)		13,065	18,030

				26,455	31,514

Gulf Manufacturing, LLC	Manufacturer of Specialty Fabricated Industrial Piping Products
		9% PIK Secured Debt (Ashland Capital IX, LLC) (Maturity—June 30, 2017)	777	777	777
		Member Units (438 units)		2,980	8,770

				3,757	9,547

Gulf Publishing Holdings, LLC	Energy Focused Media and Publishing
		12.5% Secured Debt (Maturity—April 29, 2021)	10,000	9,907	9,907
		Member Units (3,124 units)		3,124	3,124

				13,031	13,031

Harrison Hydra-Gen, Ltd .	Manufacturer of Hydraulic Generators
		Common Stock (107,456 shares)(8)		718	3,340

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Hawthorne Customs and Dispatch Services, LLC	Facilitator of Import Logistics, Brokerage, and Warehousing
		Member Units (500 units)		589	280
		Member Units (Wallisville Real Estate, LLC) (588,210 units)(8)		1,215	2,040

				1,804	2,320

HW Temps LLC	Temporary Staffing Solutions
		LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 10.50%, Secured Debt (Maturity July 2, 2020)(9)	10,376	10,296	10,296
		Preferred Member Units (3,200 units)(8)		3,942	4,360

				14,238	14,656

Hydratec, Inc .	Designer and Installer of Micro-Irrigation Systems
		Common Stock (7,095 shares)(8)		7,095	15,760

IDX Broker, LLC	Provider of Marketing and CRM Tools for the Real Estate Industry
		12.5% Secured Debt (Maturity—November 15, 2018)	11,250	11,197	11,250
		Member Units (5,400 units)(8)		5,606	6,690

				16,803	17,940

Indianapolis Aviation Partners, LLC	Fixed Base Operator
		15% Secured Debt (Maturity—January 15, 2017)	3,100	3,100	3,100
		Warrants (1,046 equivalent units)		1,129	2,649

				4,229	5,749

Jensen Jewelers of Idaho, LLC	Retail Jewelry Store
		Prime Plus 6.75% (Floor 2.00%), Current Coupon 10.25%, Secured Debt (Maturity—November 14, 2016)(9)	4,205	4,200	4,205
		Member Units (627 units)(8)		811	4,650

				5,011	8,855

Lamb Ventures, LLC	Aftermarket Automotive Services Chain
		LIBOR Plus 5.75%, Current Coupon 6.27%, Secured Debt (Maturity—March 3, 2017)	139	139	139
		11% Secured Debt (Maturity—May 31, 2018)	7,735	7,735	7,735
		Preferred Equity (non-voting)		400	400
		Member Units (742 units)(8)		5,273	5,880
		9.5% Secured Debt (Lamb's Real Estate Investment I, LLC) (Maturity—October 1, 2025)	882	882	882
		Member Units (Lamb's Real Estate Investment I, LLC) (1,000 units)(8)		625	1,620

				15,054	16,656

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Lighting Unlimited, LLC	Commercial and Residential Lighting Products and Design Services
		8% Secured Debt (Maturity—August 22, 2017)	1,514	1,514	1,514
		Preferred Equity (non-voting)		434	430
		Warrants (71 equivalent units)		54	10
		Member Units (700 units)		100	80

				2,102	2,034

Marine Shelters Holdings, LLC	Fabricator of Marine and Industrial Shelters
		12% PIK Secured Debt (Maturity—December 28, 2017)	9,967	9,905	9,379
		Preferred Member Units (3,810 units)		5,352	906

				15,257	10,285

MH Corbin Holding LLC	Manufacturer and Distributor of Traffic Safety Products
		10% Secured Debt (Maturity—August 31, 2020)	13,475	13,365	13,365
		Preferred Member Units (4,000 shares)		6,000	6,000

				19,365	19,365

Mid-Columbia Lumber Products, LLC	Manufacturer of Finger-Jointed Lumber Products
		10% Secured Debt (Maturity—December 18, 2017)	1,750	1,750	1,750
		12% Secured Debt (Maturity—December 18, 2017)	3,900	3,900	3,900
		Member Units (3,554 units)		1,244	2,300
		9.5% Secured Debt (Mid—Columbia Real Estate, LLC) (Maturity—May 13, 2025)	847	847	847
		Member Units (Mid—Columbia Real Estate, LLC) (250 units)(8)		250	600

				7,991	9,397

MSC Adviser I, LLC(16)	Third Party Investment Advisory Services
		Member Units (Fully diluted 100.0%)(8)		—	30,133

Mystic Logistics Holdings, LLC	Logistics and Distribution Services Provider for Large Volume Mailers
		12% Secured Debt (Maturity—August 15, 2019)	9,176	9,043	9,176
		Common Stock (5,873 shares)		2,720	5,150

				11,763	14,326

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

NAPCO Precast, LLC	Precast Concrete Manufacturing
		Prime Plus 2.00% (Floor 7.00%), Current Coupon 9.00%, Secured Debt (Maturity—February 1, 2019)(9)	2,713	2,690	2,713
		18% Secured Debt (Maturity—February 1, 2019)	3,952	3,919	3,952
		Member Units (2,955 units)(8)		2,975	10,670

				9,584	17,335

NRI Clinical Research, LLC	Clinical Research Service Provider
		14% Secured Debt (Maturity—September 8, 2017)	4,510	4,464	4,510
		Warrants (251,723 equivalent units)		252	650
		Member Units (1,454,167 units)		765	2,321

				5,481	7,481

NRP Jones, LLC	Manufacturer of Hoses, Fittings and Assemblies
		6% Current / 6% PIK Secured Debt (Maturity—December 22, 2016)	13,703	13,631	13,631
		Warrants (14,331 equivalent units)		817	130
		Member Units (50,877 units)		2,900	410

				17,348	14,171

OMi Holdings, Inc .	Manufacturer of Overhead Cranes
		Common Stock (1,500 shares)		1,080	14,390

Pegasus Research Group, LLC	Provider of Telemarketing and Data Services
		Member Units (460 units)(8)		1,290	8,620

PPL RVs, Inc .	Recreational Vehicle Dealer
		11.1% Secured Debt (Maturity—December 31, 2016)	9,710	9,710	9,710
		Common Stock (1,962 shares)(8)		2,150	11,780

				11,860	21,490

Principle Environmental, LLC	Noise Abatement Service Provider
		12% Secured Debt (Maturity—April 30, 2017)	4,060	4,060	4,060
		12% Current / 2% PIK Secured Debt (Maturity—April 30, 2017)	3,361	3,361	3,361
		Preferred Member Units (19,631 units)		4,663	4,600
		Warrants (1,036 equivalent units)		1,200	20

				13,284	12,041

Quality Lease Service, LLC	Provider of Rigsite Accommodation Unit Rentals and Related Services
		8% PIK Secured Debt (Maturity—June 8, 2020)	6,929	6,929	6,929
		Member Units (1,000 units)		818	2,888

				7,747	9,817

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

River Aggregates, LLC	Processor of Construction Aggregates
		Zero Coupon Secured Debt (Maturity—June 30, 2018)	750		609		609
		Member Units (1,150 units)(8)			1,150		4,600
		Member Units (RA Properties, LLC) (1,500 units)			369		2,510

					2,128		7,719

SoftTouch Medical Holdings LLC	Home Provider of Pediatric Durable Medical Equipment
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—October 31, 2019)(9)	7,225		7,177		7,225
		Member Units (4,450 units)(8)			4,930		8,670

					12,107		15,895

The MPI Group, LLC	Manufacturer of Custom Hollow Metal Doors, Frames and Accessories
		9% Secured Debt (Maturity—October 2, 2018)	2,924		2,922		2,922
		Series A Preferred Units (2,500 units; 10% Cumulative)			2,500		360
		Warrants (1,424 equivalent units)			1,096		—
		Member Units (MPI Real Estate Holdings, LLC) (100% Fully diluted)(8)			2,300		2,300

					8,818		5,582

Uvalco Supply, LLC	Farm and Ranch Supply Store
		9% Secured Debt (Maturity—January 1, 2019)	986		986		986
		Member Units (2,011 units)(8)			3,843		4,860

					4,829		5,846

Vision Interests, Inc .	Manufacturer / Installer of Commercial Signage
		13% Secured Debt (Maturity—December 23, 2016)	2,889		2,885		2,885
		Series A Preferred Stock (3,000,000 shares)			3,000		3,370
		Common Stock (1,126,242 shares)			3,706		140

					9,591		6,395

Ziegler's NYPD, LLC	Casual Restaurant Group
		6.5% Secured Debt (Maturity—October 1, 2019)	1,000		993		993
		12% Secured Debt (Maturity—October 1, 2019)	300		300		300
		14% Secured Debt (Maturity—October 1, 2019)	2,750		2,750		2,750
		Warrants (587 equivalent units)			600		220
		Preferred Member Units (10,072 units)			2,834		3,700

					7,477		7,963


Subtotal Control Investments (28.5% of total investments at fair value)				$	401,190	$	547,651

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

Affiliate Investments(6)

AFG Capital Group, LLC	Provider of Rent-to-Own Financing Solutions and Services
		Warrants (42 equivalent units)		$	259	$	620
		Member Units (186 units)			1,200		2,530

					1,459		3,150

Barfly Ventures, LLC(10)	Casual Restaurant Group
		12% Secured Debt (Maturity—August 31, 2020)	5,958		5,854		5,761
		Options (2 equivalent units)			397		420
		Warrant (1 equivalent unit)			473		240

					6,724		6,421

BBB Tank Services, LLC	Maintenance, Repair and Construction Services to the Above-Ground Storage Tank Market
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—April 8, 2021)(9)	336		332		332
		12% Current / 1% PIK Secured Debt (Maturity—April 8, 2021)	4,020		3,982		3,982
		Member Units (800,000 units)			800		800

					5,114		5,114

Boss Industries, LLC	Manufacturer and Distributor of Air, Power and Other Industrial Equipment
		Preferred Member Units (2,242 units)(8)			2,379		2,606

Bridge Capital Solutions Corporation	Financial Services and Cash Flow Solutions Provider
		13% Secured Debt (Maturity—July 25, 2021)	7,500		5,550		5,550
		Warrants (63 equivalent shares)			2,132		3,312
		13% Secured Debt (Mercury Service Group, LLC) (Maturity—July 25, 2021)	1,000		990		990
		Preferred Member Units (Mercury Service Group, LLC) (17,742 units)(8)			1,000		1,000

					9,672		10,852

Buca C, LLC	Casual Restaurant Group
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—June 30, 2020)(9)	22,371		22,197		22,371
		Preferred Member Units (6 units; 6% cumulative)(8)			3,879		5,599

					26,076		27,970

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

CAI Software LLC	Provider of Specialized Enterprise Resource Planning Software
		12% Secured Debt (Maturity—October 10, 2019)	3,780	3,754	3,780
		Member Units (65,356 units)(8)		654	2,150

				4,408	5,930

CapFusion, LLC(13)	Non-Bank Lender to Small Businesses
		13% Secured Debt (Maturity—March 25, 2021)	12,800	11,566	11,566
		Warrants (1,600 equivalent units)		1,200	1,200

				12,766	12,766

Chandler Signs Holdings, LLC(10)	Sign Manufacturer
		12% Secured Debt (Maturity—July 4, 2021)	4,500	4,459	4,500
		Class A Units (1,500,000 units)(8)		1,500	2,950

				5,959	7,450

Condit Exhibits, LLC	Tradeshow Exhibits / Custom Displays Provider
		Member Units (3,936 units)(8)		100	1,780

Congruent Credit Opportunities Funds(12)(13)	Investment Partnership
		LP Interests (Congruent Credit Opportunities Fund II, LP) (Fully diluted 19.8%)(8)		5,778	1,439
		LP Interests (Congruent Credit Opportunities Fund III, LP) (Fully diluted 17.4%)(8)		15,754	15,976

				21,532	17,415

Daseke, Inc .	Specialty Transportation Provider
		12% Current / 2.5% PIK Secured Debt (Maturity—July 31, 2018)	21,660	21,471	21,660
		Common Stock (19,467 shares)		5,213	21,640

				26,684	43,300

Dos Rios Partners(12)(13)	Investment Partnership
		LP Interests (Dos Rios Partners, LP) (Fully diluted 20.2%)		5,237	4,121
		LP Interests (Dos Rios Partners—A, LP) (Fully diluted 6.4%)		1,663	1,191

				6,900	5,312

Dos Rios Stone Products LLC(10)	Limestone and Sandstone Dimension Cut Stone Mining Quarries
		Class A Units (2,000,000 units)(8)		2,000	2,000

East Teak Fine Hardwoods, Inc .	Distributor of Hardwood Products
		Common Stock (6,250 shares)(8)		480	860

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

East West Copolymer & Rubber, LLC	Manufacturer of Synthetic Rubbers
		12% Current / 2% PIK Secured Debt (Maturity—October 17, 2019)	9,650	9,534	9,534
		Warrants (2,510,790 equivalent units)		50	50

				9,584	9,584

EIG Fund Investments(12)(13)	Investment Partnership
		LP Interests (EIG Global Private Debt fund-A, L.P.) (Fully diluted 11.1%)(8)		2,788	2,788

EIG Traverse Co-Investment, L.P.(12)(13)	Investment Partnership
		LP Interests (Fully diluted 22.2%)(8)		9,805	10,027

Freeport Financial Funds(12)(13)	Investment Partnership
		LP Interests (Freeport Financial SBIC Fund LP) (Fully diluted 9.3%)(8)		5,974	5,620
		LP Interests (Freeport First Lien Loan Fund III LP) (Fully diluted 6.0%)(8)		3,564	3,564

				9,538	9,184

Gault Financial, LLC (RMB Capital, LLC)	Purchases and Manages Liquidation of Distressed Assets
		10% Current Secured Debt (Maturity—November 21, 2016)	13,046	13,018	11,053
		Warrants (29,025 equivalent units)		400	—

				13,418	11,053

Glowpoint, Inc .	Provider of Cloud Managed Video Collaboration Services
		12% Secured Debt (Maturity—October 18, 2018)	9,000	8,943	6,639
		Common Stock (7,711,517 shares)		3,958	2,160

				12,901	8,799

Guerdon Modular Holdings, Inc .	Multi-Family and Commercial Modular Construction Company
		9% Current / 4% PIK Secured Debt (Maturity—August 13, 2019)	10,599	10,476	10,476
		Preferred Stock (404,998 shares)		1,140	1,140
		Common Stock (212,033 shares)		2,983	80

				14,599	11,696

Houston Plating and Coatings, LLC	Provider of Plating and Industrial Coating Services
		Member Units (265,756 units)		1,429	4,380

I-45 SLF LLC(12)(13)	Investment Partnership
		Member units (Fully diluted 20.0%; 24.4% profits interest)(8)		12,200	12,586

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Indianhead Pipeline Services, LLC	Provider of Pipeline Support Services
		12% Secured Debt (Maturity—February 6, 2017)	5,325	5,273	5,273
		Preferred Member Units (33,819 units; 8% cumulative)(8)		2,332	2,670
		Warrants (31,928 equivalent units)		459	—
		Member Units (14,732 units)		1	—

				8,065	7,943

KBK Industries, LLC	Manufacturer of Specialty Oilfield and Industrial Products
		10% Secured Debt (Maturity—September 28, 2017)	700	700	700
		12.5% Secured Debt (Maturity—September 28, 2017)	5,900	5,886	5,886
		Member Units (250 units)		341	3,090

				6,927	9,676

L.F. Manufacturing Holdings, LLC(10)	Manufacturer of Fiberglass Products
		Member Units (2,179,001 units)(8)		2,019	1,380

OnAsset Intelligence, Inc .	Provider of Transportation Monitoring / Tracking Products and Services
		12% PIK Secured Debt (Maturity—December 31, 2015)(17)	4,384	4,384	4,384
		Preferred Stock (912 shares; 7% cumulative)		1,981	—
		Warrants (5,333 equivalent shares)		1,919	—

				8,284	4,384

OPI International Ltd.(13)	Provider of Man Camp and Industrial Storage Services
		10% Unsecured Debt (Maturity—April 8, 2018)	473	473	473
		Common Stock (20,766,317 shares)		1,371	3,200

				1,844	3,673

PCI Holding Company, Inc .	Manufacturer of Industrial Gas Generating Systems
		12% Secured Debt (Maturity—March 31, 2019)	13,000	12,888	13,000
		Preferred Stock (1,500,000 shares; 20% cumulative)(8)		3,212	5,040

				16,100	18,040

Rocaceia, LLC (Quality Lease and Rental Holdings, LLC)	Provider of Rigsite Accommodation Unit Rentals and Related Services
		12% Secured Debt (Maturity—January 8, 2018)(14)(18)	30,785	30,281	250
		Preferred Member Units (250 units)		2,500	—

				32,781	250

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

Tin Roof Acquisition Company	Casual Restaurant Group
		12% Secured Debt (Maturity—November 13, 2018)	13,682		13,539		13,539
		Class C Preferred Stock (Fully diluted 10.0%; 10% cumulative)(8)			2,670		2,670

					16,209		16,209

UniTek Global Services, Inc.(11)	Provider of Outsourced Infrastructure Services
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—January 13, 2019)(9)	2,826		2,826		2,813
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—January 13, 2019)(9)	822		822		815
		15% PIK Unsecured Debt (Maturity—July 13, 2019)	718		718		714
		Preferred Stock (4,935,377 shares; 13.5% cumulative)(8)			5,430		6,200
		Common Stock (705,054 shares)			—		2,580

					9,796		13,122

Universal Wellhead Services Holdings, LLC(10)	Provider of Wellhead Equipment, Designs, and Personnel to the Oil & Gas Industry
		Class A Preferred Units (4,000,000 units; 4.5% cumulative)(8)			4,000		1,160

Valley Healthcare Group, LLC	Provider of Durable Medical Equipment
		LIBOR Plus 12.50% (Floor 0.50%), Current Coupon 13.02%, Secured Debt (Maturity—December 29, 2020)(9)	10,716		10,622		10,622
		Preferred Member Units (Valley Healthcare Holding, LLC) (1,600 units)			1,600		1,600

					12,222		12,222

Volusion, LLC	Provider of Online Software-as-a-Service eCommerce Solutions
		10.5% Secured Debt (Maturity—January 26, 2020)	17,500		16,391		16,391
		Preferred Member Units (4,876,670 units)			14,000		14,000
		Warrants (950,618 equivalent units)			1,400		1,400

					31,791		31,791


Subtotal Affiliate Investments (18.4% of total investments at fair value)				$	368,553	$	352,873

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Principal(4)		Cost(4)		Fair Value

Non-Control/Non-Affiliate Investments(7)

AccuMED Corp.(10)	Medical Device Contract Manufacturer
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—October 29, 2020)(9)	$	10,306	$	10,218	$	10,306

Adams Publishing Group, LLC(10)	Local Newspaper Operator
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—November 3, 2020)(9)		7,955		7,826		7,753

Ahead, LLC(10)	IT Infrastructure Value Added Reseller
		LIBOR Plus 6.50%, Current Coupon 7.34%, Secured Debt (Maturity—November 2, 2020)		14,438		14,070		14,401

Allflex Holdings III Inc.(11)	Manufacturer of Livestock Identification Products
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—July 19, 2021)(9)		14,795		14,701		14,869

American Scaffold Holdings, Inc.(10)	Marine Scaffolding Service Provider
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—March 31, 2022)(9)		7,406		7,300		7,369

American Seafoods Group, LLC(11)	Catcher-Processor of Alaskan Pollock
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—August 19, 2021)(9)		9,634		9,624		9,610

American Teleconferencing Services, Ltd.(11)	Provider of Audio Conferencing and Video Collaboration Solutions
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—December 8, 2021)(9)		12,309		11,122		12,016

Anchor Hocking, LLC(11)	Household Products Manufacturer
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—June 4, 2018)(9)		2,283		2,283		2,111
		Member Units (440,620 units)				4,928		3,084

						7,211		5,195

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

AP Gaming I, LLC(10)	Developer, Manufacturer, and Operator of Gaming Machines
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—December 20, 2020)(9)	11,256	11,076	10,813

Apex Linen Service, Inc .	Industrial Launderers
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—October 30, 2022)(9)	2,400	2,400	2,400
		13% Secured Debt (Maturity—October 30, 2022)	14,416	14,335	14,335

				16,735	16,735

Applied Products, Inc.(10)	Adhesives Distributor
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—September 30, 2019)(9)	3,927	3,895	3,818

Arcus Hunting LLC.(10)	Manufacturer of Bowhunting and Archery Products and Accessories
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—November 13, 2019)(9)	16,922	16,760	16,760

Artel, LLC(11)	Provider of Secure Satellite Network and IT Solutions
		LIBOR Plus 7.00% (Floor 1.25%), Current Coupon 8.25%, Secured Debt (Maturity—November 27, 2017)(9)	7,252	7,085	6,237

ATI Investment Sub, Inc.(11)	Manufacturer of Solar Tracking Systems
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—June 22, 2021)(9)	9,750	9,560	9,726

ATS Workholding, Inc.(10)	Manufacturer of Machine Cutting Tools and Accessories
		LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 10.50%, Secured Debt (Maturity—March 10, 2019)(9)	6,253	6,223	6,000

ATX Networks Corp.(11)(13)	Provider of Radio Frequency Management Equipment
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—June 11, 2021)(9)	11,850	11,654	11,613

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Berry Aviation, Inc.(10)	Airline Charter Service Operator
		12.00% Current / 1.75% PIK Secured Debt (Maturity—January 30, 2020)	5,627	5,585	5,585
		Common Stock (553 shares)		400	760

				5,985	6,345

Bioventus LLC(10)	Production of Orthopedic Healing Products
		LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.00%, Secured Debt (Maturity—April 10, 2020)(9)	5,000	4,929	5,013

Blackhawk Specialty Tools LLC(11)	Oilfield Equipment & Services
		LIBOR Plus 5.25% (Floor 1.25%), Current Coupon 6.50%, Secured Debt (Maturity—August 1, 2019)(9)	5,643	5,622	4,233

Blue Bird Body Company(11)(13)	School Bus Manufacturer
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—June 26, 2020)(9)	1,716	1,705	1,722

Bluestem Brands, Inc.(11)	Multi-Channel Retailer of General Merchandise
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—November 6, 2020)(9)	13,068	12,808	11,451

Brainworks Software, LLC(10)	Advertising Sales and Newspaper Circulation Software
		Prime Plus 7.25% (Floor 3.25%), Current Coupon 10.75%, Secured Debt (Maturity—July 22, 2019)(9)	626	621	621
		Prime Plus 7.25% (Floor 3.25%), Current Coupon 10.75%, Secured Debt (Maturity—July 22, 2019)(9)	6,107	6,059	5,981

				6,680	6,602

Brightwood Capital Fund III, LP(12)(13)	Investment Partnership
		LP Interests (Fully diluted 1.6%)(8)		11,250	10,596

Brundage-Bone Concrete Pumping, Inc.(11)	Construction Services Provider
		10.375% Secured Debt (Maturity—September 1, 2021)	3,000	2,984	3,210

California Pizza Kitchen, Inc.(11)	Casual Restaurant Group
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—August 23, 2022)(9)	5,000	4,951	4,985

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Cenveo Corporation(11)	Provider of Commercial Printing, Envelopes, Labels, and Printed Office Products
		6% Secured Debt (Maturity—August 1, 2019)	13,130	10,935	11,653

Charlotte Russe, Inc(11)	Fast-Fashion Retailer to Young Women
		LIBOR Plus 5.50% (Floor 1.25%), Current Coupon 6.75%, Secured Debt (Maturity—May 22, 2019)(9)	14,346	14,122	7,101

Clarius BIGS, LLC(10)	Prints & Advertising Film Financing
		15% PIK Secured Debt (Maturity—January 5, 2015)(14)(17)	2,999	2,999	159

Compact Power Equipment, Inc .	Equipment / Tool Rental
		12% Secured Debt (Maturity—October 1, 2017)	4,100	4,094	4,100
		Series A Preferred Stock (4,298,435 shares)		1,079	3,830

				5,173	7,930

Compuware Corporation(11)	Provider of Software and Supporting Services
		LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 6.25%, Secured Debt (Maturity—December 15, 2019)(9)	12,011	11,766	12,056

Covenant Surgical Partners, Inc.(11)	Ambulatory Surgical Centers
		8.75% Secured Debt (Maturity—August 1, 2019)	800	800	768

CRGT Inc.(11)	Provider of Custom Software Development
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—December 19, 2020)(9)	6,903	6,810	6,920

CST Industries Inc.(11)	Storage Tank Manufacturer
		LIBOR Plus 6.25% (Floor 1.50%), Current Coupon 7.75%, Secured Debt (Maturity—May 22, 2017)(9)	9,727	9,696	9,727

Darr Equipment LP(10)	Heavy Equipment Dealer
		12% Current / 2% PIK Secured Debt (Maturity—April 15, 2020)	21,023	20,565	20,312
		Warrants (915,734 equivalent units)		474	10

				21,039	20,322

Digital River, Inc.(11)	Provider of Outsourced e-Commerce Solutions and Services
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—February 12, 2021)(9)	15,184	15,081	15,156

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Drilling Info Holdings, Inc .	Information Services for the Oil and Gas Industry
		Common Stock (3,788,865 shares)		1,335	10,410

ECP-PF Holdings Group, Inc.(10)	Fitness Club Operator
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—November 26, 2019)(9)	5,625	5,587	5,590

EnCap Energy Fund Investments(12)(13)	Investment Partnership
		LP Interests (EnCap Energy Capital Fund VIII, L.P.) (Fully diluted 0.1%)(8)		3,915	2,054
		LP Interests (EnCap Energy Capital Fund VIII Co- Investors, L.P.) (Fully diluted 0.4%)		2,258	1,283
		LP Interests (EnCap Energy Capital Fund IX, L.P.) (Fully diluted 0.1%)(8)		4,007	4,044
		LP Interests (Encap Energy Capital Fund X, L.P.) (Fully diluted 0.1%)		2,654	2,654
		LP Interests (EnCap Flatrock Midstream Fund II, L.P.) (Fully diluted 0.8%)(8)		8,937	9,677
		LP Interests (EnCap Flatrock Midstream Fund III, L.P.) (Fully diluted 0.2%)(8)		2,474	2,496

				24,245	22,208

Evergreen Skills Lux S.á r.l. (d/b/a Skillsoft)(11)(13)	Technology-based Performance Support Solutions
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—April 28, 2022)(9)	7,000	6,852	4,253

Flavors Holdings Inc.(11)	Global Provider of Flavoring and Sweetening Products and Solutions
		LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—April 3, 2020)(9)	12,659	12,228	10,760

Fram Group Holdings, Inc.(11)	Manufacturer of Automotive Maintenance Products
		LIBOR Plus 5.50% (Floor 1.50%), Current Coupon 7.00%, Secured Debt (Maturity—July 29, 2017)(9)	9,267	9,213	8,947
		LIBOR Plus 9.50% (Floor 1.50%), Current Coupon 11.00%, Secured Debt (Maturity—January 29, 2018)(9)	700	699	608

				9,912	9,555

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

GI KBS Merger Sub LLC(11)	Outsourced Janitorial Services to Retail/Grocery Customers
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—October 29, 2021)(9)	3,900	3,849	3,764
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—April 29, 2022)(9)	800	787	760

				4,636	4,524

Grace Hill, LLC(10)	Online Training Tools for the Multi-Family Housing Industry
		Prime Plus 5.25% (Floor 1.00%), Current Coupon 8.75%, Secured Debt (Maturity—August 15, 2019)(9)	634	622	634
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—August 15, 2019)(9)	11,580	11,494	11,580

				12,116	12,214

Great Circle Family Foods, LLC(10)	Quick Service Restaurant Franchise
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—October 28, 2019)(9)	7,698	7,644	7,698

Grupo Hima San Pablo, Inc.(11)	Tertiary Care Hospitals
		LIBOR Plus 7.00% (Floor 1.50%), Current Coupon 8.50%, Secured Debt (Maturity—January 31, 2018)(9)	4,825	4,794	3,860
		13.75% Secured Debt (Maturity—July 31, 2018)	2,000	1,957	1,200

				6,751	5,060

GST Autoleather, Inc.(11)	Automotive Leather Manufacturer
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—July 10, 2020)(9)	13,317	13,209	13,067

Guitar Center, Inc.(11)	Musical Instruments Retailer
		6.5% Secured Debt (Maturity—April 15, 2019)	14,625	13,820	12,870

Hojeij Branded Foods, LLC(10)	Multi-Airport, Multi- Concept Restaurant Operator
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—July 27, 2021)(9)	5,446	5,401	5,401

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Horizon Global Corporation(11)(13)	Auto Parts Manufacturer
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—June 30, 2021)(9)	12,375	12,200	12,499

Hostway Corporation(11)	Managed Services and Hosting Provider
		LIBOR Plus 4.75% (Floor 1.25%), Current Coupon 6.00%, Secured Debt (Maturity—December 13, 2019)(9)	10,727	10,661	10,328

Hunter Defense Technologies, Inc.(11)	Provider of Military and Commercial Shelters and Systems
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—August 5, 2019)(9)	9,812	9,279	8,585

Hygea Holdings, Corp.(10)	Provider of Physician Services
		LIBOR Plus 9.25%, Current Coupon 10.08%, Secured Debt (Maturity—February 24, 2019)	7,938	7,390	7,513
		Warrants (4,880,735 equivalent shares)		369	490

				7,759	8,003

iEnergizer Limited(11)(13)	Provider of Business Outsourcing Solutions
		LIBOR Plus 6.00% (Floor 1.25%), Current Coupon 7.25%, Secured Debt (Maturity—May 1, 2019)(9)	9,918	9,413	9,522

Indivior Finance LLC(11)(13)	Specialty Pharmaceutical Company Treating Opioid Dependence
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—December 19, 2019)(9)	6,844	6,558	6,861

Industrial Container Services, LLC(10)	Steel Drum Reconditioner
		LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—December 31, 2018)(9)	8,962	8,942	8,942

Industrial Services Acquisition, LLC(10)	Industrial Cleaning Services
		11.25% Current / 0.75% PIK Unsecured Debt (Maturity—December 17, 2022)	4,510	4,423	4,423
		Member Units (Industrial Services Investments, LLC) (900,000 units)		900	900

				5,323	5,323

Infinity Acquisition Finance Corp.(11)	Application Software for Capital Markets
		7.25% Unsecured Debt (Maturity—August 1, 2022)	5,700	5,355	4,959

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Inn of the Mountain Gods Resort and Casino(11)	Hotel & Casino Owner & Operator
		9.25% Secured Debt (Maturity—November 30, 2020)	3,851	3,726	3,504

Insurance Technologies, LLC(10)	Illustration and Sales-automation Platforms
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—December 1, 2019)(9)	3,965	3,934	3,934

Intertain Group Limited(11)(13)	Business-to-Consumer Online Gaming Operator
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—April 8, 2022)(9)	4,426	4,359	4,421

iPayment, Inc.(11)	Provider of Merchant Acquisition
		LIBOR Plus 5.25% (Floor 1.50%), Current Coupon 6.75%, Secured Debt (Maturity—May 8, 2017)(9)	15,026	15,007	14,274

iQor US Inc.(11)	Business Process Outsourcing Services Provider
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—April 1, 2021)(9)	9,837	9,688	8,533

irth Solutions, LLC	Provider of Damage Prevention Information Technology Services
		Member Units (27,893 units)		1,441	1,790

Jackmont Hospitality, Inc.(10)	Franchisee of Casual Dining Restaurants
		LIBOR Plus 4.25% (Floor 1.00%), Current Coupon 5.25% / 2.50% PIK, Current Coupon Plus PIK 7.75%, Secured Debt (Maturity—May 26, 2021)(9)	4,444	4,426	4,278

Joerns Healthcare, LLC(11)	Manufacturer and Distributor of Health Care Equipment & Supplies
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—May 9, 2020)(9)	14,692	14,591	13,958

JSS Holdings, Inc.(11)	Aircraft Maintenance Program Provider
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—August 31, 2021)(9)	13,000	12,717	12,935

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Kendra Scott, LLC(11)	Jewelry Retail Stores
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—July 17, 2020)(9)	5,652	5,607	5,624

Keypoint Government Solutions, Inc.(11)	Provider of Pre-Employment Screening Services
		LIBOR Plus 6.50% (Floor 1.25%), Current Coupon 7.75%, Secured Debt (Maturity—November 13, 2017)(9)	5,670	5,649	5,641

LaMi Products, LLC(10)	General Merchandise Distribution
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—September 16, 2020)(9)	10,735	10,653	10,735

Lansing Trade Group LLC(11)	Commodity Merchandiser
		9.25% Unsecured Debt (Maturity—February 15, 2019)	6,000	6,000	6,000

Larchmont Resources, LLC(11)	Oil & Gas Exploration & Production
		LIBOR Plus 8.75% (Floor 1.00%), Current Coupon 9.75%, Secured Debt (Maturity—August 7, 2019)(9)(14)	7,784	7,496	2,491

LKCM Headwater Investments I, L.P.(12)(13)	Investment Partnership
		LP Interests (Fully diluted 2.3%)		2,500	4,150

Logix Acquisition Company, LLC(10)	Competitive Local Exchange Carrier
		LIBOR Plus 8.28% (Floor 1.00%), Current Coupon 9.28%, Secured Debt (Maturity—June 24, 2021)(9)	8,672	8,528	8,528

Looking Glass Investments, LLC(12)(13)	Specialty Consumer Finance
		9% Unsecured Debt (Maturity—June 30, 2020)	188	188	188
		Member Units (2.5 units)		125	125
		Member Units (LGI Predictive Analytics LLC) (190,712 units)(8)		183	183

				496	496

Messenger, LLC(10)	Supplier of Specialty Stationery and Related Products to the Funeral Industry
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—September 9, 2020)(9)	14,497	14,416	14,497

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Minute Key, Inc .	Operator of Automated Key Duplication Kiosks
		10% Current / 2% PIK Secured Debt (Maturity—September 19, 2019)	15,620	15,302	15,302
		Warrants (1,437,409 equivalent units)		280	370

				15,582	15,672

Mood Media Corporation(11)(13)	Provider of Electronic Equipment
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—May 1, 2019)(9)	14,843	14,746	14,131

New Media Holdings II LLC(11)(13)	Local Newspaper Operator
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—June 4, 2020)(9)	14,926	14,653	14,832

North American Lifting Holdings, Inc.(11)	Crane Service Provider
		LIBOR Plus 4.50% (Floor 1.00%), Current Coupon 5.50%, Secured Debt (Maturity—November 27, 2020)(9)	2,539	2,036	2,069

North Atlantic Trading Company, Inc.(11)	Marketer/Distributor of Tobacco Products
		LIBOR Plus 6.50% (Floor 1.25%), Current Coupon 7.75%, Secured Debt (Maturity—January 13, 2020)(9)	9,422	9,365	9,357

Novitex Intermediate, LLC(11)	Provider of Document Management Services
		LIBOR Plus 6.75% (Floor 1.25%), Current Coupon 8.00%, Secured Debt (Maturity—July 7, 2020)(9)	8,526	8,388	8,014

NTM Acquisition Corp.(11)	Provider of B2B Travel Information Content
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—June 7, 2022)(9)	4,197	4,135	4,176

Ospemifene Royalty Sub LLC (QuatRx)(10)	Estrogen-Deficiency Drug Manufacturer and Distributor
		11.5% Secured Debt (Maturity—November 15, 2026)(14)	5,071	5,071	3,324

Pardus Oil and Gas, LLC(11)	Oil & Gas Exploration & Production
		13% PIK Secured Debt (Maturity—November 12, 2021)	1,826	1,826	1,826
		5% PIK Secured Debt (Maturity—May 13, 2022)	980	980	980
		Member Units (2,472 units)		2,472	2,472

				5,278	5,278

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Paris Presents Incorporated(11)	Branded Cosmetic and Bath Accessories
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—December 31, 2021)(9)	2,000	1,967	1,960

Parq Holdings Limited Partnership(11)(13)	Hotel & Casino Operator
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—December 17, 2020)(9)	7,500	7,388	7,163

Permian Holdings, Inc.(11)	Storage Tank Manufacturer
		10.5% Secured Debt (Maturity—January 15, 2018)(14)	2,755	2,740	785

Pernix Therapeutics Holdings, Inc.(10)	Pharmaceutical Royalty
		12% Secured Debt (Maturity—August 1, 2020)	3,447	3,447	3,322

Pet Holdings ULC(11)(13)	Retailer of Pet Products and Supplies to Consumers
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—July 5, 2022)(9)	2,500	2,476	2,506

Pike Corporation(11)	Construction and Maintenance Services for Electric Transmission and Distribution Infrastructure
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—June 22, 2022)(9)	14,000	13,711	14,008

Point.360(10)	Fully Integrated Provider of Digital Media Services
		Warrants (65,463 equivalent shares)		69	—
		Common Stock (163,658 shares)		273	105

				342	105

Polycom, Inc.(11)	Provider of Audio and Video Communication Solutions
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—September 27, 2023)(9)	5,500	5,294	5,308

Prowler Acquisition Corp.(11)	Specialty Distributor to the Energy Sector
		LIBOR Plus 4.50% (Floor 1.00%), Current Coupon 5.50%, Secured Debt (Maturity—January 28, 2020)(9)	9,543	7,821	7,301

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

PT Network, LLC(10)	Provider of Outpatient Physical Therapy and Sports Medicine Services
		LIBOR Plus 7.75% (Floor 1.50%), Current Coupon 9.25%, Secured Debt (Maturity—November 1, 2018)(9)	16,335	16,128	16,090

QBS Parent, Inc.(11)	Provider of Software and Services to the Oil & Gas Industry
		LIBOR Plus 4.75% (Floor 1.00%), Current Coupon 5.75%, Secured Debt (Maturity—August 7, 2021)(9)	11,302	11,227	11,189

Raley's(11)	Family-Owned Supermarket Chain
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—May 18, 2022)(9)	4,230	4,157	4,238

Redbox Automated Retail, LLC(11)	Operator of Home Media Entertainment Kiosks
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—September 27, 2021)(9)	15,000	14,550	14,700

Renaissance Learning, Inc.(11)	Technology-based K-12 Learning Solutions
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—April 11, 2022)(9)	3,000	2,977	2,957

RGL Reservoir Operations Inc.(11)(13)	Oil & Gas Equipment and Services
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—August 13, 2021)(9)	3,920	3,832	882

RLJ Entertainment, Inc.(10)	Movie and TV Programming Licensee and Distributor
		LIBOR Plus 8.75% (Floor 0.25%), Current Coupon 9.54%, Secured Debt (Maturity—September 11, 2019)(9)	9,009	9,009	9,009

RM Bidder, LLC(10)	Scripted and Unscripted TV and Digital Programming Provider
		Warrants (327,532 equivalent units)		425	300
		Member Units (2,779 units)		46	44

				471	344

SAExploration, Inc.(10)(13)	Geophysical Services Provider
		Common Stock (50 shares)		65	27

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

SAFETY Investment Holdings, LLC	Provider of Intelligent Driver Record Monitoring Software and Services
		Member Units (2,000,000 units)		2,000	2,000

Sage Automotive Interiors, Inc(11)	Automotive Textiles Manufacturer
		LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.00%, Secured Debt (Maturity—October 8, 2021)(9)	8,138	8,095	8,056

Salient Partners L.P.(11)	Provider of Asset Management Services
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—June 9, 2021)(9)	11,038	10,751	10,568

School Specialty, Inc.(11)	Distributor of Education Supplies and Furniture
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—June 11, 2019)(9)	5,712	5,624	5,655

Sigma Electric Manufacturing Corporation(10)(13)	Manufacturer and Distributor of Electrical Fittings and Parts
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—May 13, 2019)(9)	9,328	9,328	9,328

Sorenson Communications, Inc.(11)	Manufacturer of Communication Products for Hearing Impaired
		LIBOR Plus 5.75% (Floor 2.25%), Current Coupon 8.00%, Secured Debt (Maturity—April 30, 2020)(9)	13,405	13,311	13,405

Sotera Defense Solutions, Inc.(11)	Defense Industry Intelligence Services
		LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.00%, Secured Debt (Maturity—April 21, 2017)(9)	9,436	9,339	9,059

Stardust Finance Holdings, Inc.(11)	Manufacturer of Diversified Building Products
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—March 13, 2022)(9)	12,854	12,722	12,814

Subsea Global Solutions, LLC(10)	Underwater Maintenance and Repair Services
		LIBOR Plus 6.00% (Floor 1.50%), Current Coupon 7.50%, Secured Debt (Maturity—March 17, 2020)(9)	5,629	5,586	5,512

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Synagro Infrastructure Company, Inc(11)	Waste Management Services
		LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 6.25%, Secured Debt (Maturity—August 22, 2020)(9)	4,714	4,655	3,971

Targus International, LLC(11)	Distributor of Protective Cases for Mobile Devices
		15% PIK Secured Debt (Maturity—December 31, 2019)	1,099	1,099	1,099
		Common Stock (Targus Cayman HoldCo Limited) (249,614 shares)(13)		2,555	2,260

				3,654	3,359

TeleGuam Holdings, LLC(11)	Cable and Telecom Services Provider
		LIBOR Plus 4.00% (Floor 1.25%), Current Coupon 5.25%, Secured Debt (Maturity—December 10, 2018)(9)	7,642	7,632	7,603
		LIBOR Plus 7.50% (Floor 1.25%), Current Coupon 8.75%, Secured Debt (Maturity—June 10, 2019)(9)	10,500	10,436	10,448

				18,068	18,051

Templar Energy LLC(11)	Oil & Gas Exploration & Production
		Member Units (97,048 units)		970	704

The Topps Company, Inc.(11)	Trading Cards & Confectionary
		LIBOR Plus 6.00% (Floor 1.25%), Current Coupon 7.25%, Secured Debt (Maturity—October 2, 2020)(9)	2,224	2,214	2,216

TOMS Shoes, LLC(11)	Global Designer, Distributor, and Retailer of Casual Footwear
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—October 30, 2020)(9)	4,925	4,560	3,644

Travel Leaders Group, LLC(11)	Travel Agency Network Provider
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—December 7, 2020)(9)	11,155	11,091	11,114

Truck Bodies and Equipment International, Inc.(10)	Manufacturer of Dump Truck Bodies and Dump Trailers
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—March 31, 2021)(9)	15,750	15,595	15,595

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

UniRush, LLC	Provider of Prepaid Debit Card Solutions
		12% Secured Debt (Maturity—February 1, 2019)	12,000	10,880	10,880
		Warrants (444,725 equivalent units)		1,250	1,250

				12,130	12,130

U.S. TelePacific Corp.(10)	Provider of Communications and Managed Services
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—February 24, 2021)(9)	7,500	7,371	7,371

US Joiner Holding Company(11)	Marine Interior Design and Installation
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—April 16, 2020)(9)	9,600	9,535	9,552

VCVH Holding Corp. (Verisk)(11)	Healthcare Technology Services Focused on Revenue Maximization
		LIBOR Plus 9.25% (Floor 1.00%), Current Coupon 10.25%, Secured Debt (Maturity—June 1, 2024)(9)	1,500	1,463	1,493

Virtex Enterprises, LP(10)	Specialty, Full-Service Provider of Complex Electronic Manufacturing Services
		12% Secured Debt (Maturity—December 27, 2018)	1,667	1,548	1,548
		Preferred Class A Units (14 units; 5% cumulative)(8)		333	581
		Warrants (11 equivalent units)		186	198

				2,067	2,327

Vivid Seats LLC(11)	Provider of Online Secondary Ticket Marketplace
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—March 1, 2022)(9)	4,938	4,619	4,956

Wellnext, LLC(10)	Manufacturer of Supplements and Vitamins
		LIBOR Plus 9.00% (Floor 0.50%), Current Coupon 9.85%, Secured Debt (Maturity—May 23, 2021)(9)	10,122	10,027	10,027

Western Dental Services, Inc.(11)	Dental Care Services
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—November 1, 2018)(9)	4,904	4,902	4,898

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

Wilton Brands LLC(11)	Specialty Housewares Retailer
		LIBOR Plus 7.25% (Floor 1.25%), Current Coupon 8.50%, Secured Debt (Maturity—August 30, 2018)(9)	1,358		1,349		1,134

Worley Claims Services, LLC(10)	Insurance Adjustment Management and Services Provider
		LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.00%, Secured Debt (Maturity—October 31, 2020)(9)	6,386		6,340		6,169

YP Holdings LLC(11)	Online and Offline Advertising Operator
		LIBOR Plus 11.00% (Floor 1.25%), Current Coupon 12.25%, Secured Debt (Maturity—June 4, 2018)(9)	11,182		10,621		10,847

Zilliant Incorporated	Price Optimization and Margin Management Solutions
		Preferred Stock (186,777 shares)			154		260
		Warrants (952,500 equivalent shares)			1,071		1,190

					1,225		1,450

Subtotal Non-Control/Non-Affiliate Investments (53.1% of total investments at fair value)				$	1,046,923	$	1,019,743

Total Portfolio Investments, September 30, 2016				$	1,816,666	$	1,920,267

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

September 30, 2016

(dollars in thousands)

(Unaudited)

Portfolio Company(1)	Business Description	Cost(4)		Fair Value

Marketable Securities and Idle Funds Investments

Other Marketable Securities and Idle Funds Investments(13)(15)	Investments in Marketable Securities and Diversified, Registered Bond Funds
		$	—	$	—

Subtotal Marketable Securities and Idle Funds Investments (0.0% of total investments at fair value)		$	—	$	—

Total Investments, September 30, 2016		$	1,816,666	$	1,920,267

(1): All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note B for a description of Lower Middle Market portfolio investments. All of the Company's investments, unless otherwise noted, are encumbered either as security for the Company's Credit Agreement or in support of the SBA-guaranteed debentures issued by the Funds.
(2): Debt investments are income producing, unless otherwise noted. Equity and warrants are non-income producing, unless otherwise noted.
(3): See Note C for a summary of geographic location of portfolio companies.
(4): Principal is net of repayments. Cost is net of repayments and accumulated unearned income.
(5): Control investments are defined by the Investment Company Act of 1940, as amended ("1940 Act") as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
(6): Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% of the voting securities are owned and the investments are not classified as Control investments.
(7): Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
(8): Income producing through dividends or distributions.
(9): Index based floating interest rate is subject to contractual minimum interest rate. A majority of the variable rate loans in the Company's investment portfolio bear interest at a rate that may be determined by reference to either LIBOR or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each such loan, the Company has provided the weighted average annual stated interest rate in effect at September 30, 2016. As noted in this schedule, 62% (based on the par amount of the loans) of the loans contain LIBOR floors which range between 0.25% and 2.25%.
(10): Private Loan portfolio investment. See Note B for a description of Private Loan portfolio investments.
(11): Middle Market portfolio investment. See Note B for a description of Middle Market portfolio investments.
(12): Other Portfolio investment. See Note B for a description of Other Portfolio investments.
(13): Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets.
(14): Non-accrual and non-income producing investment.
(15): Marketable securities and idle fund investments.
(16): External Investment Manager. Investment is not encumbered as security for the Company's Credit Agreement or in support of the SBA-guaranteed debentures issued by the Funds.
(17): Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
(18): Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investments in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investments in this portfolio company are on non-accrual status.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Principal(4)		Cost(4)		Fair Value

Control Investments(5)

Access Media Holdings, LLC(10)	Private Cable Operator
		5.00% Current / 5.00% PIK Secured Debt (Maturity—July 22, 2020)	$	21,554	$	21,554	$	20,380
		Preferred Member Units (4,500,000 units; 12% cumulative)				4,394		2,000
		Member Units (45 units)				1		—

						25,949		22,380

AmeriTech College, LLC	For-Profit Nursing and Healthcare College
		10% Secured Debt (Maturity—May 15, 2016)		514		514		514
		10% Secured Debt (Maturity—November 30, 2019)		489		489		489
		10% Secured Debt (Maturity—January 31, 2020)		3,025		3,025		3,025
		Preferred Member Units (294 units; 5%)(8)				2,291		2,291

						6,319		6,319

ASC Interests, LLC	Recreational and Educational Shooting Facility
		11% Secured Debt (Maturity—July 31, 2018)		2,500		2,470		2,500
		Member Units (1,500 units)(8)				1,500		2,230

						3,970		4,730

Bond-Coat, Inc .	Casing and Tubing Coating Services
		12% Secured Debt (Maturity—December 28, 2017)		11,596		11,521		11,596
		Common Stock (57,508 shares)				6,350		9,140

						17,871		20,736

Café Brazil, LLC	Casual Restaurant Group
		Member Units (1,233 units)(8)				1,742		7,330

CBT Nuggets, LLC	Produces and Sells IT Training Certification Videos
		Member Units (416 units)(8)				1,300		42,120

CMS Minerals LLC	Oil & Gas Exploration & Production
		Preferred Member Units (458 units)(8)				2,967		6,914

Datacom, LLC	Technology and Telecommunications Provider
		10.5% Secured Debt (Maturity—May 31, 2019)		11,205		11,122		10,970
		Class A Preferred Member Units (15% cumulative)(8)				1,181		1,181
		Class B Preferred Member Units (6,453 units)				6,030		5,079

						18,333		17,230

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Garreco, LLC	Manufacturer and Supplier of Dental Products
		14% Secured Debt (Maturity—January 12, 2018)	5,800	5,739	5,739
		Member Units (1,200 units)		1,200	1,270

				6,939	7,009

GRT Rubber Technologies LLC	Manufacturer of Engineered Rubber Products
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—December 19, 2019)(9)	16,122	15,988	15,988
		Member Units (5,879 units)		13,065	15,580

				29,053	31,568

Gulf Manufacturing, LLC	Manufacturer of Specialty Fabricated Industrial Piping Products
		9% PIK Secured Debt (Ashland Capital IX, LLC) (Maturity—June 30, 2017)	777	777	777
		Member Units (438 units)(8)		2,980	13,770

				3,757	14,547

Harrison Hydra-Gen, Ltd .	Manufacturer of Hydraulic Generators
		9% Secured Debt (Maturity—January 8, 2016)	5,010	5,010	5,010
		Preferred Stock (8% cumulative)(8)		1,361	1,361
		Common Stock (107,456 shares)		718	2,600

				7,089	8,971

Hawthorne Customs and Dispatch Services, LLC	Facilitator of Import Logistics, Brokerage, and Warehousing
		Member Units (500 units)(8)		589	460
		Member Units (Wallisville Real Estate, LLC) (588,210 units)(8)		1,215	2,220

				1,804	2,680

HW Temps LLC	Temporary Staffing Solutions
		LIBOR Plus 9.50% (Floor 1.00%), Current Coupon 10.50%, Secured Debt (Maturity July 2, 2020)(9)	9,976	9,884	9,884
		Preferred Member Units (3,200 units)(8)		3,942	3,942

				13,826	13,826

Hydratec, Inc .	Designer and Installer of Micro-Irrigation Systems
		Common Stock (7,095 shares)(8)		7,095	14,950

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

IDX Broker, LLC	Provider of Marketing and CRM Tools for the Real Estate Industry
		12.5% Secured Debt (Maturity—November 15, 2018)	11,350	11,281	11,350
		Member Units (5,400 units)		5,606	6,440

				16,887	17,790

Indianapolis Aviation Partners, LLC	Fixed Base Operator
		15% Secured Debt (Maturity—January 15, 2016)	3,100	3,095	3,100
		Warrants (1,046 equivalent units)		1,129	2,540

				4,224	5,640

Jensen Jewelers of Idaho, LLC	Retail Jewelry Store
		Prime Plus 6.75% (Floor 2.00%), Current Coupon 10.25%, Secured Debt (Maturity—November 14, 2016)(9)	4,055	4,028	4,055
		Member Units (627 units)(8)		811	4,750

				4,839	8,805

Lamb's Venture, LLC	Aftermarket Automotive Services Chain
		11% Secured Debt (Maturity—May 31, 2018)	7,962	7,961	7,962
		Preferred Equity (non-voting)		328	328
		Member Units (742 units)		5,273	4,690
		9.5% Secured Debt (Lamb's Real Estate Investment I, LLC) (Maturity—October 1, 2025)	919	919	919
		Member Units (Lamb's Real Estate Investment I, LLC) (1,000 units)(8)		625	1,240

				15,106	15,139

Lighting Unlimited, LLC	Commercial and Residential Lighting Products and Design Services
		8% Secured Debt (Maturity—August 22, 2016)	1,514	1,514	1,514
		Preferred Equity (non-voting)		434	430
		Warrants (71 equivalent units)		54	40
		Member Units (700 units)(8)		100	350

				2,102	2,334

Marine Shelters Holdings, LLC (LoneStar Marine Shelters)	Fabricator of Marine and Industrial Shelters
		12% PIK Secured Debt (Maturity—December 28, 2017)	9,053	8,967	8,870
		Preferred Member Units (3,810 units)		5,352	4,881

				14,319	13,751

MH Corbin Holding LLC	Manufacturer and distributor of traffic safety products
		10% Secured Debt (Maturity—August 31, 2020)	14,000	13,869	13,869
		Preferred Member Units (4,000 shares)		6,000	6,000

				19,869	19,869

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Mid-Columbia Lumber Products, LLC	Manufacturer of Finger-Jointed Lumber Products
		10% Secured Debt (Maturity—December 18, 2017)	1,750	1,750	1,750
		12% Secured Debt (Maturity—December 18, 2017)	3,900	3,900	3,900
		Member Units (2,829 units)		1,244	2,580
		9.5% Secured Debt (Mid—Columbia Real Estate, LLC) (Maturity—May 13, 2025)	881	881	881
		Member Units (Mid—Columbia Real Estate, LLC) (250 units)(8)		250	550

				8,025	9,661

MSC Adviser I, LLC(16)	Third Party Investment Advisory Services
		Member Units (Fully diluted 100.0%)(8)		—	27,272

Mystic Logistics Holdings, LLC	Logistics and Distribution Services Provider for Large Volume Mailers
		12% Secured Debt (Maturity—August 15, 2019)	9,448	9,282	9,448
		Common Stock (5,873 shares)(8)		2,720	5,970

				12,002	15,418

NAPCO Precast, LLC	Precast Concrete Manufacturing
		Prime Plus 2.00% (Floor 7.00%), Current Coupon 9.00%, Secured Debt (Maturity—January 31, 2016)(9)	625	625	625
		Prime Plus 2.00% (Floor 7.00%), Current Coupon 9.00%, Secured Debt (Maturity—February 1, 2016)(9)	3,380	3,379	3,380
		18% Secured Debt (Maturity—February 1, 2016)	4,924	4,923	4,924
		Member Units (2,955 units)(8)		2,975	8,590

				11,902	17,519

NRI Clinical Research, LLC	Clinical Research Service Provider
		14% Secured Debt (Maturity—September 8, 2017)	4,617	4,539	4,539
		Warrants (251,723 equivalent units)		252	340
		Member Units (1,454,167 units)		765	1,342

				5,556	6,221

NRP Jones, LLC	Manufacturer of Hoses, Fittings and Assemblies
		12% Secured Debt (Maturity—December 22, 2016)	13,224	12,948	12,948
		Warrants (14,331 equivalent units)		817	450
		Member Units (50,877 units)		2,900	1,480

				16,665	14,878

OMi Holdings, Inc .	Manufacturer of Overhead Cranes
		Common Stock (1,500 shares)		1,080	13,640

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Pegasus Research Group, LLC (Televerde)	Provider of Telemarketing and Data Services
		Member Units (460 units)(8)		1,290	6,840

PPL RVs, Inc .	Recreational Vehicle Dealer
		11.1% Secured Debt (Maturity—July 1, 2016)	9,710	9,710	9,710
		Common Stock (1,962 shares)		2,150	9,770

				11,860	19,480

Principle Environmental, LLC	Noise Abatement Service Provider
		12% Secured Debt (Maturity—April 30, 2017)	4,060	4,039	4,060
		12% Current / 2% PIK Secured Debt (Maturity—April 30, 2017)	3,310	3,309	3,310
		Preferred Member Units (19,631 units)(8)		4,663	6,060
		Warrants (1,036 equivalent units)		1,200	310

				13,211	13,740

Quality Lease Service, LLC	Provider of Rigsite Accommodation Unit Rentals and Related Services
		8% PIK Secured Debt (Maturity—June 8, 2020)	6,538	6,538	6,538
		Member Units (1,000 units)		568	2,638

				7,106	9,176

River Aggregates, LLC	Processor of Construction Aggregates
		Zero Coupon Secured Debt (Maturity—June 30, 2018)	750	556	556
		Member Units (1,150 units)(8)		1,150	3,830
		Member Units (RA Properties, LLC) (1,500 units)		369	2,360

				2,075	6,746

SoftTouch Medical Holdings LLC	Home Provider of Pediatric Durable Medical Equipment
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—October 31, 2019)(9)	8,075	8,010	8,010
		Member Units (4,450 units)(8)		4,930	5,710

				12,940	13,720

Southern RV, LLC	Recreational Vehicle Dealer
		13% Secured Debt (Maturity—August 8, 2018)	11,400	11,296	11,400
		Member Units (1,680 units)(8)		1,680	15,100
		13% Secured Debt (Southern RV Real Estate, LLC) (Maturity—August 8, 2018)	3,250	3,220	3,250
		Member Units (Southern RV Real Estate, LLC) (480 units)		480	1,200

				16,676	30,950

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

The MPI Group, LLC	Manufacturer of Custom Hollow Metal Doors, Frames and Accessories
		9% Secured Debt (Maturity—October 2, 2018)	2,924		2,921		2,921
		Series A Preferred Units (2,500 units; 10% Cumulative)			2,500		690
		Warrants (1,424 equivalent units)			1,096		—
		Member Units (MPI Real Estate Holdings, LLC) (100% Fully diluted)(8)			2,300		2,230

					8,817		5,841

Travis Acquisition LLC	Manufacturer of Aluminum Trailers
		12% Secured Debt (Maturity—August 30, 2018)	3,513		3,471		3,513
		Member Units (7,282 units)			7,100		14,480

					10,571		17,993

Uvalco Supply, LLC	Farm and Ranch Supply Store
		9% Secured Debt (Maturity—January 1, 2019)	1,314		1,314		1,314
		Member Units (2,011 units)(8)			3,843		5,460

					5,157		6,774

Vision Interests, Inc .	Manufacturer / Installer of Commercial Signage
		13% Secured Debt (Maturity—December 23, 2016)	3,071		3,052		3,052
		Series A Preferred Stock (3,000,000 shares)			3,000		3,550
		Common Stock (1,126,242 shares)			3,706		210

					9,758		6,812

Ziegler's NYPD, LLC	Casual Restaurant Group
		6.5% Secured Debt (Maturity—October 1, 2019)	1,000		992		992
		12% Secured Debt (Maturity—October 1, 2019)	500		500		500
		14% Secured Debt (Maturity—October 1, 2019)	2,750		2,750		2,750
		Warrants (587 equivalent units)			600		50
		Preferred Member Units (10,072 units)			2,834		3,400

					7,676		7,692


Subtotal Control Investments (30.8% of total investments at fair value)				$	387,727	$	555,011

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Principal(4)		Cost(4)		Fair Value

Affiliate Investments(6)

AFG Capital Group, LLC	Provider of Rent-to-Own Financing Solutions and Services
		11% Secured Debt (Maturity—November 7, 2019)	$	12,960	$	12,611	$	12,790
		Warrants (42 equivalent units)				259		490
		Member Units (186 units)				1,200		2,020

						14,070		15,300

Boss Industries, LLC	Manufacturer and Distributor of Air, Power and Other Industrial Equipment
		Preferred Member Units (2,242 units)(8)				2,246		2,586

Bridge Capital Solutions Corporation	Financial Services and Cash Flow Solutions Provider
		13% Secured Debt (Maturity—April 18, 2017)		7,000		6,890		6,890
		Warrants (22 equivalent shares)				200		1,300

						7,090		8,190

Buca C, LLC	Casual Restaurant Group
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—June 30, 2020)(9)		25,530		25,299		25,299
		Preferred Member Units (6 units; 6% cumulative)(8)				3,711		3,711

						29,010		29,010

CAI Software LLC	Provider of Specialized Enterprise Resource Planning Software
		12% Secured Debt (Maturity—October 10, 2019)		4,661		4,624		4,661
		Member Units (65,356 units)				654		1,000

						5,278		5,661

Condit Exhibits, LLC	Tradeshow Exhibits / Custom Displays Provider
		Member Units (3,936 units)(8)				100		1,010

Congruent Credit Opportunities Funds(12)(13)	Investment Partnership
		LP Interests (Congruent Credit Opportunities Fund II, LP) (Fully diluted 19.8%)(8)				6,612		2,834
		LP Interests (Congruent Credit Opportunities Fund III, LP) (Fully diluted 17.4%)(8)				12,020		12,024

						18,632		14,858

Daseke, Inc .	Specialty Transportation Provider
		12% Current / 2.5% PIK Secured Debt (Maturity—July 31, 2018)		21,253		21,003		21,253
		Common Stock (19,467 shares)				5,213		22,660

						26,216		43,913

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Dos Rios Partners(12)(13)	Investment Partnership
		LP Interests (Dos Rios Partners, LP) (Fully diluted 20.2%)		3,104	2,031
		LP Interests (Dos Rios Partners—A, LP) (Fully diluted 6.4%)		986	648

				4,090	2,679

East Teak Fine Hardwoods, Inc .	Distributor of Hardwood Products
		Common Stock (6,250 shares)(8)		480	860

East West Copolymer & Rubber, LLC	Manufacturer of Synthetic Rubbers
		12% Secured Debt (Maturity—October 17, 2019)	9,600	9,463	9,463
		Warrants (2,510,790 equivalent units)		50	50

				9,513	9,513

EIG Traverse Co-Investment, L.P.(12)(13)	Investment Partnership
		LP Interests (Fully diluted 6.6%)(8)		4,755	4,755

Freeport Financial Funds(12)(13)	Investment Partnership
		LP Interests (Freeport Financial SBIC Fund LP) (Fully diluted 9.9%)(8)		5,974	6,045
		LP Interests (Freeport First Lien Loan Fund III LP) (Fully diluted 6.4%)		2,077	2,077

				8,051	8,122

Gault Financial, LLC (RMB Capital, LLC)	Purchases and Manages Liquidation of Distressed Assets
		10% Secured Debt (Maturity—November 21, 2016)	13,046	12,896	10,930
		Warrants (29,025 equivalent units)		400	—

				13,296	10,930

Glowpoint, Inc .	Provider of Cloud Managed Video Collaboration Services
		8% Secured Debt (Maturity—October 18, 2018)	400	397	397
		12% Secured Debt (Maturity—October 18, 2018)	9,000	8,929	8,929
		Common Stock (7,711,517 shares)		3,958	3,840

				13,284	13,166

Guerdon Modular Holdings, Inc .	Multi-Family and Commercial Modular Construction Company
		13% Secured Debt (Maturity—August 13, 2019)	10,400	10,280	10,280
		Common Stock (170,577 shares)		2,983	1,990

				13,263	12,270

Houston Plating and Coatings, LLC	Provider of Plating and Industrial Coating Services
		Member Units (248,082 units)(8)		996	8,440

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

I-45 SLF LLC(12)(13)	Investment Partnership
		Member units (Fully diluted 20.0%; 24.4% profits interest)		7,200	7,200

Indianhead Pipeline Services, LLC	Provider of Pipeline Support Services
		12% Secured Debt (Maturity—February 6, 2017)	6,000	5,853	5,853
		Preferred Member Units (33,819 units; 8% cumulative)		2,302	2,302
		Warrants (31,928 equivalent units)		459	—
		Member Units (14,732 units)		1	—

				8,615	8,155

KBK Industries, LLC	Manufacturer of Specialty Oilfield and Industrial Products
		12.5% Secured Debt (Maturity—September 28, 2017)	5,900	5,875	5,900
		Member Units (250 units)(8)		341	3,680

				6,216	9,580

L.F. Manufacturing Holdings, LLC(10)	Manufacturer of Fiberglass Products
		Member Units (2,179,001 units)(8)		2,019	1,485

MPS Denver, LLC	Specialty Card Printing
		Member Units (13,800 units)		1,130	1,130

OnAsset Intelligence, Inc .	Provider of Transportation Monitoring / Tracking Products and Services
		12% PIK Secured Debt (Maturity—December 31, 2015)(17)	4,006	4,006	4,006
		Preferred Stock (912 shares; 7% cumulative)(8)		1,981	1,380
		Warrants (5,333 equivalent shares)		1,919	—

				7,906	5,386

OPI International Ltd.(13)	Provider of Man Camp and Industrial Storage Services
		10% Unsecured Debt (Maturity—April 8, 2018)	473	473	473
		Common Stock (20,766,317 shares)		1,371	3,200

				1,844	3,673

PCI Holding Company, Inc .	Manufacturer of Industrial Gas Generating Systems
		Preferred Stock (1,500,000 shares; 20% cumulative)(8)		2,762	4,887

Radial Drilling Services Inc .	Oil and Gas Lateral Drilling Technology Provider
		12% Secured Debt (Maturity—November 22, 2016)(14)	4,200	3,941	1,500
		Warrants (316 equivalent shares)		758	—

				4,699	1,500

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)		Cost(4)		Fair Value

Rocaceia, LLC (Quality Lease and Rental Holdings, LLC)	Provider of Rigsite Accommodation Unit Rentals and Related Services
		12% Secured Debt (Maturity—January 8, 2018)(14)(18)	30,785		30,281		250
		Preferred Member Units (250 units)			2,500		—

					32,781		250

Samba Holdings, Inc .	Provider of Intelligent Driver Record Monitoring Software and Services
		12.5% Secured Debt (Maturity—November 17, 2016)	24,662		24,553		24,662
		Common Stock (170,963 shares)			2,087		30,220

					26,640		54,882

Tin Roof Acquisition Company	Casual Restaurant Group
		12% Secured Debt (Maturity—November 13, 2018)	13,994		13,807		13,807
		Class C Preferred Stock (Fully diluted 10.0%; 10% cumulative)(8)			2,477		2,477

					16,284		16,284

UniTek Global Services, Inc.(11)	Provider of Outsourced Infrastructure Services
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—January 13, 2019)(9)	2,826		2,826		2,812
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50% / 1.00% PIK, Current Coupon Plus PIK 10.50%, Secured Debt (Maturity—January 13, 2019)(9)	1,261		1,261		1,255
		15% PIK Unsecured Debt (Maturity—July 13, 2019)	641		641		638
		Preferred Stock (4,935,377 shares)			4,935		5,540
		Common Stock (705,054 shares)			—		—

					9,663		10,245

Universal Wellhead Services Holdings, LLC(10)	Provider of Wellhead Equipment, Designs, and Personnel to the Oil & Gas Industry
		Class A Preferred Units (4,000,000 units; 4.5% cumulative)(8)			4,000		3,000

Volusion, LLC	Provider of Online Software-as-a-Service eCommerce Solutions
		10.5% Secured Debt (Maturity—January 26, 2020)	17,500		16,199		16,199
		Preferred Member Units (4,876,670 units)			14,000		14,000
		Warrants (950,618 equivalent units)			1,400		1,400

					31,599		31,599


Subtotal Affiliate Investments (19.4% of total investments at fair value)				$	333,728	$	350,519

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Principal(4)		Cost(4)		Fair Value

Non-Control/Non-Affiliate Investments(7)

AccuMED, Corp.(10)	Medical Device Contract Manufacturer
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—October 29, 2020)(9)	$	9,750	$	9,648	$	9,648

Adams Publishing Group, LLC(10)	Local Newspaper Operator
		LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—November 3, 2020)(9)		9,506		9,329		9,328

Ahead, LLC(10)	IT Infrastructure Value Added Reseller
		LIBOR Plus 6.50%, Current Coupon 6.76%, Secured Debt (Maturity—November 2, 2020)		15,000		14,562		14,625

Allflex Holdings III Inc.(11)	Manufacturer of Livestock Identification Products
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—July 19, 2021)(9)		10,150		10,080		10,008

AM General LLC(11)	Specialty Vehicle Manufacturer
		LIBOR Plus 9.00% (Floor 1.25%), Current Coupon 10.25%, Secured Debt (Maturity—March 22, 2018)(9)		2,256		2,221		1,867

AM3 Pinnacle Corporation(10)	Provider of Comprehensive Internet, TV and Voice Services for Multi- Dwelling Unit Properties
		Common Stock (60,240 shares)				2,000		—

American Seafoods Group, LLC(11)	Catcher-Processor of Alaskan Pollock
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—August 19, 2021)(9)		9,975		9,963		9,892

AMF Bowling Centers, Inc.(11)	Bowling Alley Operator
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—September 18, 2021)(9)		7,907		7,802		7,835

Anchor Hocking, LLC(11)	Household Products Manufacturer
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—June 4, 2018)(9)		2,306		2,306		2,179
		Member Units (440,620 units)				4,928		3,250

						7,234		5,429

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

AP Gaming I, LLC(10)	Developer, Manufacturer, and Operator of Gaming Machines
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—December 20, 2020)(9)	11,314	11,108	10,946

Apex Linen Service, Inc .	Industrial Launderers
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—October 30, 2022)(9)	1,600	1,600	1,600
		13% Secured Debt (Maturity—October 30, 2022)	12,000	11,926	11,926

				13,526	13,526

Applied Products, Inc.(10)	Adhesives Distributor
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—September 30, 2019)(9)	5,813	5,759	5,683

Arcus Hunting LLC.(10)	Manufacturer of Bowhunting and Archery Products and Accessories
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—November 13, 2019)(9)	9,540	9,429	9,429

Artel, LLC(11)	Provider of Secure Satellite Network and IT Solutions
		LIBOR Plus 7.00% (Floor 1.25%), Current Coupon 8.25%, Secured Debt (Maturity—November 27, 2017)(9)	7,854	7,585	6,716

ATS Workholding, Inc.(10)	Manufacturer of Machine Cutting Tools and Accessories
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—March 10, 2019)(9)	6,492	6,452	6,230

ATX Networks Corp.(11)(13)	Provider of Radio Frequency Management Equipment
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—June 14, 2021)(9)	14,925	14,647	14,701

Barfly Ventures, LLC(10)	Casual Restaurant Group
		12% Secured Debt (Maturity—August 31, 2020)	4,121	4,042	4,042
		Warrant (1 equivalent unit)		473	473

				4,515	4,515

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Berry Aviation, Inc.(10)	Airline Charter Service Operator
		12.00% Current / 1.75% PIK Secured Debt (Maturity—January 30, 2020)	5,627	5,578	5,578
		Common Stock (553 shares)		400	400

				5,978	5,978

Bioventus LLC(10)	Production of Orthopedic Healing Products
		LIBOR Plus 10.00% (Floor 1.00%), Current Coupon 11.00%, Secured Debt (Maturity—April 10, 2020)(9)	5,000	4,917	4,925

Blackbrush Oil and Gas LP(11)	Oil & Gas Exploration
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—July 30, 2021)(9)	4,000	3,975	3,230

Blackhawk Specialty Tools LLC(11)	Oilfield Equipment & Services
		LIBOR Plus 5.25% (Floor 1.25%), Current Coupon 6.50%, Secured Debt (Maturity—August 1, 2019)(9)	5,892	5,866	5,450

Blue Bird Body Company(11)	School Bus Manufacturer
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—June 26, 2020)(9)	4,702	4,646	4,669

Bluestem Brands, Inc.(11)(13)	Multi-Channel Retailer of General Merchandise
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—November 6, 2020)(9)	13,632	13,358	12,780

Brainworks Software, LLC(10)	Advertising Sales and Newspaper Circulation Software
		Prime Plus 7.25% (Floor 3.25%), Current Coupon 10.75%, Secured Debt (Maturity—July 22, 2019)(9)	626	620	620
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—July 22, 2019)(9)	6,185	6,126	6,012

				6,746	6,632

Brightwood Capital Fund III, LP(12)(13)	Investment Partnership
		LP Interests (Fully diluted 1.6%)(8)		11,250	11,125

Brundage-Bone Concrete Pumping, Inc.(11)	Construction Services Provider
		10.375% Secured Debt (Maturity—September 1, 2021)	2,500	2,500	2,438

Calloway Laboratories, Inc.(10)	Health Care Testing Facilities
		17% PIK Secured Debt (Maturity—September 30, 2016)(14)	7,324	7,275	—
		Warrants (125,000 equivalent shares)		17	—

				7,292	—

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Cengage Learning Acquisitions, Inc.(11)	Provider of Educational Print and Digital Services
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—March 31, 2020)(9)	9,720	9,672	9,502

Cenveo Corporation(11)	Provider of Commercial Printing, Envelopes, Labels, and Printed Office Products
		6% Secured Debt (Maturity—August 1, 2019)	5,230	4,544	3,687

CGSC of Delaware Holdings Corp.(11)(13)	Insurance Brokerage Firm
		LIBOR Plus 7.00% (Floor 1.25%), Current Coupon 8.25%, Secured Debt (Maturity—October 16, 2020)(9)	2,000	1,979	1,900

Charlotte Russe, Inc(11)	Fast-Fashion Retailer to Young Women
		LIBOR Plus 5.50% (Floor 1.25%), Current Coupon 6.75%, Secured Debt (Maturity—May 22, 2019)(9)	14,346	14,065	10,031

Clarius ASIG, LLC(10)	Prints & Advertising Film Financing
		15% PIK Secured Debt (Maturity—September 14, 2014)(17)	620	620	620

Clarius BIGS, LLC(10)	Prints & Advertising Film Financing
		15% PIK Secured Debt (Maturity—January 5, 2015)(14)(17)	3,386	3,386	563

Compact Power Equipment, Inc .	Equipment / Tool Rental
		12% Secured Debt (Maturity—October 1, 2017)	4,100	4,090	4,100
		Series A Preferred Stock (4,298,435 shares)		1,079	2,930

				5,169	7,030

Compuware Corporation(11)	Provider of Software and Supporting Services
		LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 6.25%, Secured Debt (Maturity—December 15, 2019)(9)	14,751	14,395	13,998

Covenant Surgical Partners, Inc.(11)	Ambulatory Surgical Centers
		8.75% Secured Debt (Maturity—August 1, 2019)	800	800	780

CRGT Inc.(11)	Provider of Custom Software Development
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—December 19, 2020)(9)	10,168	10,009	10,118

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

CST Industries Inc.(11)	Storage Tank Manufacturer
		LIBOR Plus 6.25% (Floor 1.50%), Current Coupon 7.75%, Secured Debt (Maturity—May 22, 2017)(9)	8,227	8,197	8,145

Darr Equipment LP(10)	Heavy Equipment Dealer
		11.75% Current / 2% PIK Secured Debt (Maturity—April 15, 2020)	20,706	20,178	19,688
		Warrants (915,734 equivalent units)		474	410

				20,652	20,098

Digital River, Inc.(11)	Provider of Outsourced e-Commerce Solutions and Services
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—February 12, 2021)(9)	8,667	8,588	8,580

Digity Media LLC(11)	Radio Station Operator
		LIBOR Plus 4.75% (Floor 1.25%), Current Coupon 6.00%, Secured Debt (Maturity—February 8, 2019)(9)	6,588	6,539	6,506

Drilling Info Holdings, Inc .	Information Services for the Oil and Gas Industry
		Common Stock (3,788,865 shares)		1,335	9,920

ECP-PF Holdings Group, Inc.(10)	Fitness Club Operator
		LIBOR Plus 9.00% (Floor 1.00%), Current Coupon 10.00%, Secured Debt (Maturity—November 26, 2019)(9)	5,625	5,579	5,492

EIG Fund Investments(12)(13)	Investment Partnership
		LP Interests (EIG Global Private Debt fund-A, L.P.) (Fully diluted 0.5%)		718	718

EnCap Energy Fund Investments(12)(13)	Investment Partnership
		LP Interests (EnCap Energy Capital Fund VIII, L.P.) (Fully diluted 0.1%)(8)		3,762	2,765
		LP Interests (EnCap Energy Capital Fund VIII Co- Investors, L.P.) (Fully diluted 0.4%)		2,194	1,056
		LP Interests (EnCap Energy Capital Fund IX, L.P.) (Fully diluted 0.1%)(8)		3,075	3,826
		LP Interests (Encap Energy Capital Fund X, L.P.) (Fully diluted 0.1%)		692	692
		LP Interests (EnCap Flatrock Midstream Fund II, L.P.) (Fully diluted 0.8%)(8)		7,350	10,738
		LP Interests (EnCap Flatrock Midstream Fund III, L.P.) (Fully diluted 0.2%)		464	892

				17,537	19,969

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Energy and Exploration Partners, LLC(11)	Oil & Gas Exploration & Production
		8.75% Secured Debt (Maturity—January 23, 2016)(14)	221	221	221
		LIBOR Plus 6.75% (Floor 1.00%), Current Coupon 7.75%, Secured Debt (Maturity—January 22, 2019)(9)(14)	9,390	9,048	2,371

				9,269	2,592

Evergreen Skills Lux S.á r.l. (d/b/a Skillsoft)(11)(13)	Technology-based Performance Support Solutions
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—April 28, 2022)(9)	7,000	6,838	4,673

Extreme Reach, Inc.(11)	Integrated TV and Video Advertising Platform
		LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—February 7, 2020)(9)	8,875	8,866	8,731

Flavors Holdings Inc.(11)	Global Provider of Flavoring and Sweetening Products and Solutions
		LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—April 3, 2020)(9)	11,333	11,004	10,086

Fram Group Holdings, Inc.(11)	Manufacturer of Automotive Maintenance Products
		LIBOR Plus 5.50% (Floor 1.50%), Current Coupon 7.00%, Secured Debt (Maturity—July 29, 2017)(9)	9,652	9,547	7,275
		LIBOR Plus 9.50% (Floor 1.50%), Current Coupon 11.00%, Secured Debt (Maturity—January 29, 2018)(9)	700	699	350

				10,246	7,625

GI KBS Merger Sub LLC(11)	Outsourced Janitorial Services to Retail/Grocery Customers
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—October 29, 2021)(9)	3,960	3,901	3,742
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—April 29, 2022)(9)	800	786	792

				4,687	4,534

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Grace Hill, LLC(10)	Online Training Tools for the Multi-Family Housing Industry
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—August 15, 2019)(9)	9,450	9,361	9,450

Great Circle Family Foods, LLC(10)	Quick Service Restaurant Franchise
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—October 28, 2019)(9)	7,849	7,783	7,783

Grupo Hima San Pablo, Inc.(11)	Tertiary Care Hospitals
		LIBOR Plus 7.00% (Floor 1.50%), Current Coupon 8.50%, Secured Debt (Maturity—January 31, 2018)(9)	4,863	4,816	4,668
		13.75% Secured Debt (Maturity—July 31, 2018)	2,000	1,942	1,860

				6,758	6,528

GST Autoleather, Inc.(11)	Automotive Leather Manufacturer
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—July 10, 2020)(9)	9,875	9,797	9,529

Guitar Center, Inc.(11)	Musical Instruments Retailer
		6.5% Secured Debt (Maturity—April 15, 2019)	11,000	10,442	9,240

Halcon Resources Corporation(11)	Oil & Gas Exploration & Production
		9.75% Unsecured Debt (Maturity—July 15, 2020)	6,925	6,382	2,008

Hojeij Branded Foods, LLC(10)	Multi-Airport, Multi- Concept Restaurant Operator
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—July 27, 2021)(9)	5,344	5,294	5,294

Horizon Global Corporation(11)	Auto Parts Manufacturer
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—June 30, 2021)(9)	9,750	9,568	9,677

Hostway Corporation(11)	Managed Services and Hosting Provider
		LIBOR Plus 4.75% (Floor 1.25%), Current Coupon 6.00%, Secured Debt (Maturity—December 13, 2019)(9)	11,179	11,105	11,067

Hunter Defense Technologies, Inc.(11)	Provider of Military and Commercial Shelters and Systems
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—August 5, 2019)(9)	6,414	6,366	6,350

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

ICON Health & Fitness, Inc.(11)	Producer of Fitness Products
		11.875% Secured Debt (Maturity—October 15, 2016)	6,956	6,907	6,608

iEnergizer Limited(11)(13)	Provider of Business Outsourcing Solutions
		LIBOR Plus 6.00% (Floor 1.25%), Current Coupon 7.25%, Secured Debt (Maturity—May 1, 2019)(9)	8,110	8,030	7,502

Indivior Finance LLC(11)(13)	Specialty Pharmaceutical Company Treating Opioid Dependence
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—December 19, 2019)(9)	7,125	6,759	6,697

Industrial Container Services, LLC(10)	Steel Drum Reconditioner
		LIBOR Plus 5.75% (Floor 1.00%), Current Coupon 6.75%, Secured Debt (Maturity—December 31, 2018)(9)	5,000	5,000	5,000

Infinity Acquisition Finance Corp.(11)	Application Software for Capital Markets
		7.25% Unsecured Debt (Maturity—August 1, 2022)	4,000	4,000	3,440

Inn of the Mountain Gods Resort and Casino(11)	Hotel & Casino Owner & Operator
		9.25% Secured Debt (Maturity—November 30, 2020)	3,851	3,708	3,562

Insurance Technologies, LLC(10)	Illustration and Sales-automation Platforms
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—December 1, 2019)(9)	4,804	4,759	4,759

Intertain Group Limited(11)(13)	Business-to-Consumer Online Gaming Operator
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—April 8, 2022)(9)	9,938	9,782	9,883

iPayment, Inc.(11)	Provider of Merchant Acquisition
		LIBOR Plus 5.25% (Floor 1.50%), Current Coupon 6.75%, Secured Debt (Maturity—May 8, 2017)(9)	15,026	14,986	14,446

iQor US Inc.(11)	Business Process Outsourcing Services Provider
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—April 1, 2021)(9)	9,887	9,718	7,942

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

irth Solutions, LLC	Provider of Damage Prevention Information Technology Services
		Member Units (27,893 units)		1,441	1,441

Jackmont Hospitality, Inc.(10)	Franchisee of Casual Dining Restaurants
		LIBOR Plus 4.25% (Floor 1.00%), Current Coupon 5.25% / 2.50% PIK, Current Coupon Plus PIK 7.75%, Secured Debt (Maturity—May 26, 2021)(9)	4,357	4,337	4,188

Joerns Healthcare, LLC(11)	Manufacturer and Distributor of Health Care Equipment & Supplies
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—May 9, 2020)(9)	14,805	14,711	14,703

JSS Holdings, Inc.(11)	Aircraft Maintenance Program Provider
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—August 31, 2021)(9)	14,566	14,230	13,765

Kendra Scott, LLC(11)	Jewelry Retail Stores
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—July 17, 2020)(9)	5,875	5,821	5,831

Keypoint Government Solutions, Inc.(11)	Provider of Pre-Employment Screening Services
		LIBOR Plus 6.50% (Floor 1.25%), Current Coupon 7.75%, Secured Debt (Maturity—November 13, 2017)(9)	6,303	6,268	6,271

LaMi Products, LLC(10)	General Merchandise Distribution
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—September 16, 2020)(9)	4,729	4,699	4,699

Lansing Trade Group LLC(11)	Commodity Merchandiser
		9.25% Unsecured Debt (Maturity—February 15, 2019)	6,000	6,000	5,625

Larchmont Resources, LLC(11)	Oil & Gas Exploration & Production
		LIBOR Plus 8.75% (Floor 1.00%), Current Coupon 9.75%, Secured Debt (Maturity—August 7, 2019)(9)	7,807	7,508	5,543

Leadrock Properties, LLC	Real Estate Investment
		10% Secured Debt (Maturity—May 4, 2026)	1,440	1,416	1,416

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Legendary Pictures Funding, LLC(10)	Producer of TV, Film, and Comic Content
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—April 22, 2020)(9)	7,500	7,372	7,425

LKCM Headwater Investments I, L.P.(12)(13)	Investment Partnership
		LP Interests (Fully diluted 2.3%)		2,500	4,875

Looking Glass Investments, LLC(12)(13)	Specialty Consumer Finance
		9% Unsecured Debt (Maturity—June 30, 2020)	188	188	188
		Member Units (2.5 units)		125	125
		Member Units (LGI Predictive Analytics LLC) (190,712 units)(8)		188	188

				501	501

MediMedia USA, Inc.(11)	Provider of Healthcare Media and Marketing
		LIBOR Plus 6.75% (Floor 1.25%), Current Coupon 8.00%, Secured Debt (Maturity—November 20, 2018)(9)	7,772	7,714	7,422

Messenger, LLC(10)	Supplier of Specialty Stationery and Related Products to the Funeral Industry
		LIBOR Plus 7.25% (Floor 1.00%), Current Coupon 8.25%, Secured Debt (Maturity—September 9, 2020)(9)	15,583	15,483	15,583

Milk Specialties Company(11)	Processor of Nutrition Products
		LIBOR Plus 7.00% (Floor 1.25%), Current Coupon 8.25%, Secured Debt (Maturity—November 9, 2018)(9)	792	789	792

Minute Key, Inc .	Operator of Automated Key Duplication Kiosks
		10% Current / 2% PIK Secured Debt (Maturity—September 19, 2019)	14,186	13,817	13,817
		Warrants (1,437,409 equivalent units)		280	280

				14,097	14,097

Miramax Film NY, LLC(11)	Motion Picture Producer and Distributor
		Member Units (500,000 units)(8)		864	864

Mood Media Corporation(11)(13)	Provider of Electronic Equipment
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—May 1, 2019)(9)	14,957	14,827	14,266

New Media Holdings II LLC(11)(13)	Local Newspaper Operator
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—June 4, 2020)(9)	9,788	9,635	9,703

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

North American Lifting Holdings, Inc.(11)	Crane Service Provider
		LIBOR Plus 4.50% (Floor 1.00%), Current Coupon 5.50%, Secured Debt (Maturity—November 27, 2020)(9)	997	835	733

North Atlantic Trading Company, Inc.(11)	Marketer/Distributor of Tobacco Products
		LIBOR Plus 6.50% (Floor 1.25%), Current Coupon 7.75%, Secured Debt (Maturity—January 13, 2020)(9)	9,676	9,607	9,603

Novitex Intermediate, LLC(11)	Provider of Document Management Services
		LIBOR Plus 6.25% (Floor 1.25%), Current Coupon 7.50%, Secured Debt (Maturity—July 7, 2020)(9)	8,692	8,532	8,192

Ospemifene Royalty Sub LLC (QuatRx)(10)	Estrogen-Deficiency Drug Manufacturer and Distributor
		11.5% Secured Debt (Maturity—November 15, 2026)	5,071	5,071	3,780

Panolam Industries International, Inc.(11)	Decorative Laminate Manufacturer
		LIBOR Plus 6.00% (Floor 1.25%), Current Coupon 7.25%, Secured Debt (Maturity—August 23, 2017)(9)	9,472	9,429	9,424

Paris Presents Incorporated(11)	Branded Cosmetic and Bath Accessories
		LIBOR Plus 8.25% (Floor 1.00%), Current Coupon 9.25%, Secured Debt (Maturity—December 31, 2021)(9)	2,000	1,965	1,960

Parq Holdings Limited Partnership(11)(13)	Hotel & Casino Operator
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—December 17, 2020)(9)	7,500	7,369	7,200

Permian Holdings, Inc.(11)	Storage Tank Manufacturer
		10.5% Secured Debt (Maturity—January 15, 2018)	2,755	2,738	1,047

Pernix Therapeutics Holdings, Inc.(10)	Pharmaceutical Royalty
		12% Secured Debt (Maturity—August 1, 2020)	3,818	3,818	3,777

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Pike Corporation(11)	Construction and Maintenance Services for Electric Transmission and Distribution Infrastructure
		LIBOR Plus 8.50% (Floor 1.00%), Current Coupon 9.50%, Secured Debt (Maturity—June 22, 2022)(9)	15,000	14,663	14,712

Point.360(10)	Fully Integrated Provider of Digital Media Services
		Warrants (65,463 equivalent shares)		69	9
		Common Stock (163,658 shares)		273	144

				342	153

Prowler Acquisition Corp.(11)	Specialty Distributor to the Energy Sector
		LIBOR Plus 4.50% (Floor 1.00%), Current Coupon 5.50%, Secured Debt (Maturity—January 28, 2020)(9)	4,411	3,734	3,749

PT Network, LLC(10)	Provider of Outpatient Physical Therapy and Sports Medicine Services
		LIBOR Plus 7.75% (Floor 1.50%), Current Coupon 9.25%, Secured Debt (Maturity—November 1, 2018)(9)	12,047	11,954	11,771

QBS Parent, Inc.(11)	Provider of Software and Services to the Oil & Gas Industry
		LIBOR Plus 4.75% (Floor 1.00%), Current Coupon 5.75%, Secured Debt (Maturity—August 7, 2021)(9)	11,389	11,303	11,332

Raley's(11)	Family-owned supermarket chain in California
		LIBOR Plus 6.25% (Floor 1.00%), Current Coupon 7.25%, Secured Debt (Maturity—May 18, 2022)(9)	5,094	4,999	5,069

RCHP, Inc.(11)	Regional Non-Urban Hospital Owner/Operator
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—April 23, 2019)(9)	5,448	5,426	5,448
		LIBOR Plus 10.25% (Floor 1.00%), Current Coupon 11.25%, Secured Debt (Maturity—October 23, 2019)(9)	4,000	3,954	3,953

				9,380	9,401

Renaissance Learning, Inc.(11)	Technology-based K-12 Learning Solutions
		LIBOR Plus 7.00% (Floor 1.00%), Current Coupon 8.00%, Secured Debt (Maturity—April 11, 2022)(9)	3,000	2,975	2,835

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

RGL Reservoir Operations Inc.(11)(13)	Oil & Gas Equipment and Services
		LIBOR Plus 5.00% (Floor 1.00%), Current Coupon 6.00%, Secured Debt (Maturity—August 13, 2021)(9)	3,950	3,851	1,534

RLJ Entertainment, Inc.(10)	Movie and TV Programming Licensee and Distributor
		LIBOR Plus 8.75% (Floor 0.25%), Current Coupon 9.16%, Secured Debt (Maturity—September 11, 2019)(9)	9,354	9,353	9,203

RM Bidder, LLC(10)	Scripted and Unscripted TV and Digital Programming Provider
		Warrants (327,532 equivalent units)		425	363
		Member Units (2,779 units)		46	45

				471	408

SAExploration, Inc.(10)(13)	Geophysical Services Provider
		Common Stock (6,472 shares)		65	27

Sage Automotive Interiors, Inc(11)	Automotive Textiles Manufacturer
		LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.00%, Secured Debt (Maturity—October 8, 2021)(9)	3,000	2,974	2,970

Salient Partners L.P.(11)	Provider of Asset Management Services
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—June 9, 2021)(9)	7,388	7,251	7,240

Sotera Defense Solutions, Inc.(11)	Defense Industry Intelligence Services
		LIBOR Plus 7.50% (Floor 1.50%), Current Coupon 9.00%, Secured Debt (Maturity—April 21, 2017)(9)	10,119	9,886	9,360

Stardust Finance Holdings, Inc.(11)	Manufacturer of Diversified Building Products
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—March 13, 2022)(9)	12,406	12,239	12,065

Subsea Global Solutions, LLC(10)	Underwater Maintenance and Repair Services
		LIBOR Plus 6.00% (Floor 1.50%), Current Coupon 7.50%, Secured Debt (Maturity—March 17, 2020)(9)	4,887	4,836	4,762

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

Synagro Infrastructure Company, Inc(11)	Waste Management Services
		LIBOR Plus 5.25% (Floor 1.00%), Current Coupon 6.25%, Secured Debt (Maturity—August 22, 2020)(9)	4,714	4,647	4,124

Targus Group International(11)	Distributor of Protective Cases for Mobile Devices
		LIBOR Plus 9.50% (Floor 1.50%), Current Coupon 11.00% / 1.00% PIK, Current Coupon Plus PIK 12.00%, Secured Debt (Maturity—May 24, 2016)(9)(14)	4,258	4,263	3,119

TeleGuam Holdings, LLC(11)	Cable and Telecom Services Provider
		LIBOR Plus 4.00% (Floor 1.25%), Current Coupon 5.25%, Secured Debt (Maturity—December 10, 2018)(9)	7,975	7,961	7,935
		LIBOR Plus 7.50% (Floor 1.25%), Current Coupon 8.75%, Secured Debt (Maturity—June 10, 2019)(9)	2,500	2,484	2,487

				10,445	10,422

Templar Energy LLC(11)	Oil & Gas Exploration & Production
		LIBOR Plus 7.50% (Floor 1.00%), Current Coupon 8.50%, Secured Debt (Maturity—November 25, 2020)(9)	4,000	3,962	485

The Tennis Channel, Inc.(10)	Television-Based Sports Broadcasting
		Warrants (114,316 equivalent shares)		235	301

The Topps Company, Inc.(11)	Trading Cards & Confectionary
		LIBOR Plus 6.00% (Floor 1.25%), Current Coupon 7.25%, Secured Debt (Maturity—October 2, 2018)(9)	1,960	1,948	1,923

TOMS Shoes, LLC(11)	Global Designer, Distributor, and Retailer of Casual Footwear
		LIBOR Plus 5.50% (Floor 1.00%), Current Coupon 6.50%, Secured Debt (Maturity—October 30, 2020)(9)	4,963	4,545	3,387

Travel Leaders Group, LLC(11)	Travel Agency Network Provider
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—December 7, 2020)(9)	8,700	8,638	8,613

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)

US Joiner Holding Company(11)	Marine Interior Design and Installation
		LIBOR Plus 6.00% (Floor 1.00%), Current Coupon 7.00%, Secured Debt (Maturity—April 16, 2020)(9)	7,369	7,341	7,295

Valley Healthcare Group, LLC	Provider of Durable Medical Equipment
		LIBOR Plus 12.50% (Floor 0.50%), Current Coupon 13.00%, Secured Debt (Maturity—December 29, 2020)(9)	10,400	10,297	10,297

Vantage Oncology, LLC(11)	Outpatient Radiation Oncology Treatment Centers
		9.5% Secured Debt (Maturity—June 15, 2017)	12,050	11,938	10,182

Virtex Enterprises, LP(10)	Specialty, Full-Service Provider of Complex Electronic Manufacturing Services
		12% Secured Debt (Maturity—December 27, 2018)	1,667	1,516	1,516
		Preferred Class A Units (14 units; 5% cumulative)(8)		333	512
		Warrants (11 equivalent units)		186	135

				2,035	2,163

Vision Solutions, Inc.(11)	Provider of Information Availability Software
		LIBOR Plus 8.00% (Floor 1.50%), Current Coupon 9.50%, Secured Debt (Maturity—July 23, 2017)(9)	5,000	4,987	4,750

Western Dental Services, Inc.(11)	Dental Care Services
		LIBOR Plus 6.50% (Floor 1.00%), Current Coupon 7.50%, Secured Debt (Maturity—November 1, 2018)(9)	4,904	4,901	4,303

Wilton Brands LLC(11)	Specialty Housewares Retailer
		LIBOR Plus 7.25% (Floor 1.25%), Current Coupon 8.50%, Secured Debt (Maturity—August 30, 2018)(9)	1,540	1,524	1,475

Worley Claims Services, LLC(10)	Insurance Adjustment Management and Services Provider
		LIBOR Plus 8.00% (Floor 1.00%), Current Coupon 9.00%, Secured Debt (Maturity—October 31, 2020)(9)	6,435	6,381	6,210

YP Holdings LLC(11)	Online and Offline Advertising Operator
		LIBOR Plus 6.75% (Floor 1.25%), Current Coupon 8.00%, Secured Debt (Maturity—June 4, 2018)(9)	2,455	2,435	2,382

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Cost(4)		Fair Value

Zilliant Incorporated	Price Optimization and Margin Management Solutions
		Preferred Stock (186,777 shares)		154		260
		Warrants (952,500 equivalent shares)		1,071		1,190

				1,225		1,450

Subtotal Non-Control/Non-Affiliate Investments (49.6% of total investments at fair value)			$	945,187	$	894,466

Total Portfolio Investments, December 31, 2015			$	1,666,642	$	1,799,996

Table of Contents

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule Of Investments (Continued)

December 31, 2015

(dollars in thousands)

Portfolio Company(1)	Business Description	Type of Investment(2)(3)	Cost(4)		Fair Value

Marketable Securities and Idle Funds Investments

PennantPark Investment Corporation(13)(15)	Business Development Company
		Common Stock (343,149 shares)(8)	$	3,629	$	2,121

Other Marketable Securities and Idle Funds Investments(13)(15)	Investments in Marketable Securities and Diversified, Registered Bond Funds
				1,778		1,572

Subtotal Marketable Securities and Idle Funds Investments (0.2% of total investments at fair value)			$	5,407	$	3,693

Total Investments, December 31, 2015			$	1,672,049	$	1,803,689

(1): All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note B for a description of Lower Middle Market portfolio investments. All of the Company's investments, unless otherwise noted, are encumbered either as security for the Company's Credit Agreement or in support of the SBA-guaranteed debentures issued by the Funds.
(2): Debt investments are income producing, unless otherwise noted. Equity and warrants are non-income producing, unless otherwise noted.
(3): See Note C for a summary of geographic location of portfolio companies.
(4): Principal is net of repayments. Cost is net of repayments and accumulated unearned income.
(5): Control investments are defined by the Investment Company Act of 1940, as amended ("1940 Act") as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained.
(6): Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% of the voting securities are owned and the investments are not classified as Control investments.
(7): Non-Control/Non-Affiliate investments are defined by the 1940 Act as investments that are neither Control investments nor Affiliate investments.
(8): Income producing through dividends or distributions.
(9): Index based floating interest rate is subject to contractual minimum interest rate. A majority of the variable rate loans in the Company's investment portfolio bear interest at a rate that may be determined by reference to either LIBOR or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate), which typically resets semi-annually, quarterly, or monthly at the borrower's option. The borrower may also elect to have multiple interest reset periods for each loan. For each such loan, the Company has provided the weighted average annual stated interest rate in effect at December 31, 2015. As noted in this schedule, 59% (based on the par amount of the loans) of the loans contain LIBOR floors which range between 0.25% and 1.50%.
(10): Private Loan portfolio investment. See Note B for a description of Private Loan portfolio investments.
(11): Middle Market portfolio investment. See Note B for a description of Middle Market portfolio investments.
(12): Other Portfolio investment. See Note B for a description of Other Portfolio investments.
(13): Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets.
(14): Non-accrual and non-income producing investment.
(15): Marketable securities and idle fund investments.
(16): External Investment Manager. Investment is not encumbered as security for the Company's Credit Agreement or in support of the SBA-guaranteed debentures issued by the Funds.
(17): Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable.
(18): Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investments in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investments in this portfolio company are on non-accrual status.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements

(Unaudited)

NOTE A—ORGANIZATION AND BASIS OF PRESENTATION

1. Organization

Main Street Capital Corporation ("MSCC") is a principal investment firm primarily focused on providing customized debt and equity financing to lower middle market ("LMM") companies and debt capital to middle market ("Middle Market") companies. The portfolio investments of MSCC and its consolidated subsidiaries are typically made to support management buyouts, recapitalizations, growth financings, refinancings and acquisitions of companies that operate in diverse industry sectors. MSCC seeks to partner with entrepreneurs, business owners and management teams and generally provides "one stop" financing alternatives within its LMM portfolio. MSCC and its consolidated subsidiaries invest primarily in secured debt investments, equity investments, warrants and other securities of LMM companies based in the United States and in secured debt investments of Middle Market companies generally headquartered in the United States.

MSCC was formed in March 2007 to operate as an internally managed business development company ("BDC") under the Investment Company Act of 1940, as amended (the "1940 Act"). MSCC wholly owns several investment funds, including Main Street Mezzanine Fund, LP ("MSMF"), Main Street Capital II, LP ("MSC II") and Main Street Capital III, LP ("MSC III" and, collectively with MSMF and MSC II, the "Funds"), and each of their general partners. The Funds are each licensed as a Small Business Investment Company ("SBIC") by the United States Small Business Administration ("SBA"). Because MSCC is internally managed, all of the executive officers and other employees are employed by MSCC. Therefore, MSCC does not pay any external investment advisory fees but instead directly incurs the operating costs associated with employing investment and portfolio management professionals.

MSC Adviser I, LLC (the "External Investment Manager") was formed in November 2013 as a wholly owned subsidiary of MSCC to provide investment management and other services to parties other than MSCC and its subsidiaries or their portfolio companies ("External Parties") and receives fee income for such services. MSCC has been granted no-action relief by the Securities and Exchange Commission ("SEC") to allow the External Investment Manager to register as a registered investment adviser ("RIA") under Investment Advisers Act of 1940, as amended (the "Advisers Act"). Since the External Investment Manager conducts all of its investment management activities for External Parties, it is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements.

MSCC has elected to be treated for U.S. federal income tax purposes as a regulated investment company ("RIC") under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). As a result, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary income or capital gains that it distributes to its stockholders.

MSCC has certain direct and indirect wholly owned subsidiaries that have elected to be taxable entities (the "Taxable Subsidiaries"). The primary purpose of the Taxable Subsidiaries is to permit MSCC to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes. The External Investment Manager is also a direct wholly owned subsidiary that has elected to be a taxable entity. The Taxable Subsidiaries and the External Investment Manager are each taxed at their normal corporate tax rates based on their taxable income.

Table of Contents

MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Unless otherwise noted or the context otherwise indicates, the terms "we," "us," "our," the "Company" and "Main Street" refer to MSCC and its consolidated subsidiaries, which include the Funds and the Taxable Subsidiaries.

2. Basis of Presentation

Main Street's financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). For each of the periods presented herein, Main Street's consolidated financial statements include the accounts of MSCC and its consolidated subsidiaries. The Investment Portfolio, as used herein, refers to all of Main Street's investments in LMM portfolio companies, investments in Middle Market portfolio companies, Private Loan portfolio investments, Other Portfolio investments, and the investment in the External Investment Manager, but excludes all "Marketable securities and idle funds investments" (see Note C—Fair Value Hierarchy for Investments and Debentures—Portfolio Composition—Investment Portfolio Composition for additional discussion of Main Street's Investment Portfolio and definitions for the terms Private Loan and Other Portfolio). "Marketable securities and idle funds investments" are classified as financial instruments and are reported separately on Main Street's consolidated balance sheets and consolidated schedules of investments due to the nature of such investments (see Note B.11.). Main Street's results of operations for the three and nine months ended September 30, 2016 and 2015, cash flows for the nine months ended September 30, 2016 and 2015, and financial position as of September 30, 2016 and December 31, 2015, are presented on a consolidated basis. The effects of all intercompany transactions between Main Street and its consolidated subsidiaries have been eliminated in consolidation.

The accompanying unaudited consolidated financial statements of Main Street are presented in conformity with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain disclosures accompanying annual financial statements prepared in accordance with U.S. GAAP are omitted. In the opinion of management, the unaudited consolidated financial results included herein contain all adjustments, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods included herein. The results of operations for the three and nine months ended September 30, 2016 and 2015 are not necessarily indicative of the operating results to be expected for the full year. Also, the unaudited financial statements and notes should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2015. Financial statements prepared on a U.S. GAAP basis require management to make estimates and assumptions that affect the amounts and disclosures reported in the financial statements and accompanying notes. Such estimates and assumptions could change in the future as more information becomes known, which could impact the amounts reported and disclosed herein.

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MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

as MSCP provides all of its services directly or indirectly to Main Street or its portfolio companies. Main Street has determined that all of its portfolio investments do not qualify for this exception, including the investment in the External Investment Manager. Therefore, Main Street's Investment Portfolio is carried on the consolidated balance sheet at fair value, as discussed further in Note B, with any adjustments to fair value recognized as "Net Change in Unrealized Appreciation (Depreciation)" on the consolidated statements of operations until the investment is realized, usually upon exit, resulting in any gain or loss being recognized as a "Net Realized Gain (Loss)."

Portfolio Investment Classification

Main Street classifies its Investment Portfolio in accordance with the requirements of the 1940 Act. Under the 1940 Act, (a) "Control Investments" are defined as investments in which Main Street owns more than 25% of the voting securities or has rights to maintain greater than 50% of the board representation, (b) "Affiliate Investments" are defined as investments in which Main Street owns between 5% and 25% of the voting securities and does not have rights to maintain greater than 50% of the board representation and (c) "Non-Control/Non-Affiliate Investments" are defined as investments that are neither Control Investments nor Affiliate Investments.

NOTE B—SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

1. Valuation of the Investment Portfolio

Main Street accounts for its Investment Portfolio at fair value. As a result, Main Street follows the provisions of the Financial Accounting Standards Board ("FASB") ASC 820, Fair Value Measurements and Disclosures ("ASC 820"). ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value and enhances disclosure requirements for fair value measurements. ASC 820 requires Main Street to assume that the portfolio investment is to be sold in the principal market to independent market participants, which may be a hypothetical market. Market participants are defined as buyers and sellers in the principal market that are independent, knowledgeable and willing and able to transact.

Main Street's portfolio strategy calls for it to invest primarily in illiquid debt and equity securities issued by private, LMM companies and more liquid debt securities issued by Middle Market companies that are generally larger in size than the LMM companies. Main Street categorizes some of its investments in LMM companies and Middle Market companies as Private Loan portfolio investments, which are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments Main Street holds in its LMM portfolio and Middle Market portfolio. Main Street's portfolio also includes Other Portfolio investments which primarily consist of investments that are not consistent with the typical profiles for its LMM portfolio investments, Middle Market portfolio investments or Private Loan portfolio investments, including investments which may be managed by third parties. Main Street's portfolio investments may be subject to restrictions on resale.

LMM investments and Other Portfolio investments generally have no established trading market while Middle Market securities generally have established markets that are not active. Private Loan investments may include investments which have no established trading market or have established markets that are not active. Main Street determines in good faith the fair value of its Investment Portfolio pursuant to a valuation policy in accordance with ASC 820 and a valuation process approved

Table of Contents

MAIN STREET CAPITAL CORPORATION

Notes to Consolidated Financial Statements (Continued)

(Unaudited)

by its Board of Directors and in accordance with the 1940 Act. Main Street's valuation policies and processes are intended to provide a consistent basis for determining the fair value of Main Street's Investment Portfolio.

For LMM portfolio investments, Main Street generally reviews external events, including private mergers, sales and acquisitions involving comparable companies, and includes these events in the valuation process by using an enterprise value waterfall methodology ("Waterfall") for its LMM equity investments and an income approach using a yield-to-maturity model ("Yield-to-Maturity") for its LMM debt investments. For Middle Market portfolio investments, Main Street primarily uses quoted prices in the valuation process. Main Street determines the appropriateness of the use of third-party broker quotes, if any, in determining fair value based on its understanding of the level of actual transactions used by the broker to develop the quote and whether the quote was an indicative price or binding offer, the depth and consistency of broker quotes and the correlation of changes in broker quotes with underlying performance of the portfolio company and other market indices. For Middle Market and Private Loan portfolio investments in debt securities for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value the investment in a current hypothetical sale using the Yield-to-Maturity valuation method. For its Other Portfolio equity investments, Main Street generally calculates the fair value of the investment primarily based on the net asset value ("NAV") of the fund and adjusts the fair value for other factors that would affect the fair value of the investment. All of the valuation approaches for Main Street's portfolio investments estimate the value of the investment as if Main Street were to sell, or exit, the investment as of the measurement date.

These valuation approaches consider the value associated with Main Street's ability to control the capital structure of the portfolio company, as well as the timing of a potential exit. For valuation purposes, "control" portfolio investments are composed of debt and equity securities in companies for which Main Street has a controlling interest in the equity ownership of the portfolio company or the ability to nominate a majority of the portfolio company's board of directors. For valuation purposes, "non-control" portfolio investments are generally composed of debt and equity securities in companies for which Main Street does not have a controlling interest in the equity ownership of the portfolio company or the ability to nominate a majority of the portfolio company's board of directors.

Under the Waterfall valuation method, Main Street estimates the enterprise value of a portfolio company using a combination of market and income approaches or other appropriate valuation methods, such as considering recent transactions in the equity securities of the portfolio company or third-party valuations of the portfolio company, and then performs a waterfall calculation by allocating the enterprise value over the portfolio company's securities in order of their preference relative to one another. The enterprise value is the fair value at which an enterprise could be sold in a transaction between two willing parties, other than through a forced or liquidation sale. Typically, private companies are bought and sold based on multiples of earnings before interest, taxes, depreciation and amortization ("EBITDA"), cash flows, net income, revenues, or in limited cases, book value. There is no single methodology for estimating enterprise value. For any one portfolio company, enterprise value is generally described as a range of values from which a single estimate of enterprise value is derived. In estimating the enterprise value of a portfolio company, Main Street analyzes various factors including the portfolio company's historical and projected financial results. Due to SEC deadlines for Main Street's quarterly and annual financial reporting, the operating results of a portfolio company used in the current period valuation are generally the results from the period ended three months prior

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to such valuation date and may include unaudited, projected, budgeted or pro forma financial information and may require adjustments for non-recurring items or to normalize the operating results that may require significant judgment in its determination. In addition, projecting future financial results requires significant judgment regarding future growth assumptions. In evaluating the operating results, Main Street also analyzes the impact of exposure to litigation, loss of customers or other contingencies. After determining the appropriate enterprise value, Main Street allocates the enterprise value to investments in order of the legal priority of the various components of the portfolio company's capital structure. In applying the Waterfall valuation method, Main Street assumes the loans are paid off at the principal amount in a change in control transaction and are not assumed by the buyer, which Main Street believes is consistent with its past transaction history and standard industry practices.

Under the Yield-to-Maturity valuation method, Main Street also uses the income approach to determine the fair value of debt securities based on projections of the discounted future free cash flows that the debt security will likely generate, including analyzing the discounted cash flows of interest and principal amounts for the debt security, as set forth in the associated loan agreements, as well as the financial position and credit risk of the portfolio company. Main Street's estimate of the expected repayment date of its debt securities is generally the maturity date of the instrument, as Main Street generally intends to hold its loans and debt securities to maturity. The Yield-to-Maturity analysis also considers changes in leverage levels, credit quality, portfolio company performance and other factors. Main Street will generally use the value determined by the Yield-to-Maturity analysis as the fair value for that security; however, because of Main Street's general intent to hold its loans to maturity, the fair value will not exceed the principal amount of the debt security valued using the Yield-to-Maturity valuation method. A change in the assumptions that Main Street uses to estimate the fair value of its debt securities using the Yield-to-Maturity valuation method could have a material impact on the determination of fair value. If there is deterioration in credit quality or if a debt security is in workout status, Main Street may consider other factors in determining the fair value of the debt security, including the value attributable to the debt security from the enterprise value of the portfolio company or the proceeds that would most likely be received in a liquidation analysis.

Under the NAV valuation method, for an investment in an investment fund that does not have a readily determinable fair value, Main Street measures the fair value of the investment predominately based on the NAV of the investment fund as of the measurement date and adjusts the investment's fair value for factors known to Main Street that would affect that fund's NAV, including, but not limited to, fair values for individual investments held by the fund if Main Street holds the same investment or for a publicly traded investment. In addition, in determining the fair value of the investment, Main Street considers whether adjustments to the NAV are necessary in certain circumstances, based on the analysis of any restrictions on redemption of Main Street's investment as of the measurement date, recent actual sales or redemptions of interests in the investment fund, and expected future cash flows available to equity holders, including the rate of return on those cash flows compared to an implied market return on equity required by market participants, or other uncertainties surrounding Main Street's ability to realize the full NAV of its interests in the investment fund.

Pursuant to its internal valuation process and the requirements under the 1940 Act, Main Street performs valuation procedures on each of its portfolio investments quarterly. In addition to its internal valuation process, in arriving at estimates of fair value for its investments in its LMM portfolio companies, Main Street, among other things, consults with a nationally recognized independent financial advisory services firm. The nationally recognized independent financial advisory services firm analyzes and provides observations, recommendations and an assurance certification regarding the

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Company's determinations of the fair value of its LMM portfolio company investments. The nationally recognized independent financial advisory services firm is generally consulted relative to Main Street's investments in each LMM portfolio company at least once every calendar year, and for Main Street's investments in new LMM portfolio companies, at least once in the twelve-month period subsequent to the initial investment. In certain instances, Main Street may determine that it is not cost-effective, and as a result is not in its stockholders' best interest, to consult with the nationally recognized independent financial advisory services firm on its investments in one or more LMM portfolio companies. Such instances include, but are not limited to, situations where the fair value of Main Street's investment in a LMM portfolio company is determined to be insignificant relative to the total Investment Portfolio. Main Street consulted with and received an assurance certification from its independent financial advisory services firm in arriving at Main Street's determination of fair value on its investments in a total of 46 LMM portfolio companies for the nine months ended September 30, 2016, representing approximately 75% of the total LMM portfolio at fair value as of September 30, 2016, and on a total of 44 LMM portfolio companies for the nine months ended September 30, 2015, representing approximately 75% of the total LMM portfolio at fair value as of September 30, 2015. Excluding investments in new LMM portfolio companies which have not been in the Investment Portfolio for at least twelve months subsequent to the initial investment as of September 30, 2016 and 2015, as applicable, and investments in the LMM portfolio companies that were not reviewed because their equity is publicly traded, the percentage of the LMM portfolio reviewed and certified by the independent financial advisory services firm for the nine months ended September 30, 2016 and 2015 was 80% and 82% of the total LMM portfolio at fair value as of September 30, 2016 and 2015, respectively.

For valuation purposes, all of Main Street's Middle Market portfolio investments are non-control investments. To the extent sufficient observable inputs are available to determine fair value, Main Street uses observable inputs to determine the fair value of these investments through obtaining third-party quotes or other independent pricing. For Middle Market portfolio investments for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value such Middle Market debt investments in a current hypothetical sale using the Yield-to-Maturity valuation method and such Middle Market equity investments in a current hypothetical sale using the Waterfall valuation method. Because almost all of the Middle Market portfolio investments are typically valued using third party quotes or other independent pricing services (including 97% and 99% of the Middle Market portfolio investments as of September 30, 2016 and December 31, 2015, respectively), Main Street does not generally consult with any financial advisory services firms in connection with determining the fair value of its Middle Market investments.

For valuation purposes, all of Main Street's Private Loan portfolio investments are non-control investments. For Private Loan portfolio investments for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value such Private Loan debt investments in a current hypothetical sale using the Yield-to-Maturity valuation method and such Private Loan equity investments in a current hypothetical sale using the Waterfall valuation method.

In addition to its internal valuation process, in arriving at estimates of fair value for its investments in its Private Loan portfolio companies, Main Street, among other things, consults with a nationally recognized independent financial advisory services firm. The nationally recognized independent

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financial advisory services firm analyzes and provides observations and recommendations and an assurance certification regarding the Company's determinations of the fair value of its Private Loan portfolio company investments. The nationally recognized independent financial advisory services firm is generally consulted relative to Main Street's investments in each Private Loan portfolio company at least once every calendar year, and for Main Street's investments in new Private Loan portfolio companies, at least once in the twelve-month period subsequent to the initial investment. In certain instances, Main Street may determine that it is not cost-effective, and as a result is not in its stockholders' best interest, to consult with the nationally recognized independent financial advisory services firm on its investments in one or more Private Loan portfolio companies. Such instances include, but are not limited to, situations where the fair value of Main Street's investment in a Private Loan portfolio company is determined to be insignificant relative to the total Investment Portfolio. Main Street consulted with and received an assurance certification from its independent financial advisory services firm in arriving at its determination of fair value on its investments in a total of 20 Private Loan portfolio companies for the nine months ended September 30, 2016, representing approximately 56% of the total Private Loan portfolio at fair value as of September 30, 2016, and on a total of 11 Private Loan portfolio companies for the nine months ended September 30, 2015, representing approximately 37% of the total Private Loan portfolio at fair value as of September 30, 2015. Excluding its investments in new Private Loan portfolio companies which have not been in the Investment Portfolio for at least twelve months subsequent to the initial investment decision as of September 30, 2016 and its investments in the Private Loan portfolio companies that were not reviewed because the investment is publicly traded or quoted by banks, the percentage of the Private Loan portfolio reviewed and certified by its independent financial advisory services firm for the nine months ended September 30, 2016 and 2015 was 80% and 84% of the total Private Loan portfolio at fair value as of September 30, 2016 and 2015, respectively.

For valuation purposes, all of Main Street's Other Portfolio investments are non-control investments. Main Street's Other Portfolio investments comprised 4.9% and 4.2%, respectively, of Main Street's Investment Portfolio at fair value as of September 30, 2016 and December 31, 2015. Similar to the LMM investment portfolio, market quotations for Other Portfolio equity investments are generally not readily available. For its Other Portfolio equity investments, Main Street generally determines the fair value of its investments using the NAV valuation method. For Other Portfolio debt investments for which it has determined that third-party quotes or other independent pricing are not available or appropriate, Main Street generally estimates the fair value based on the assumptions that it believes hypothetical market participants would use to value such Other Portfolio debt investments in a current hypothetical sale using the Yield-to-Maturity valuation method. For Other Portfolio debt investments for which third-party quotes or other independent pricing are available and appropriate, Main Street determines the fair value of these investments through obtaining third party quotes or other independent pricing to the extent that these inputs are available and appropriate to determine fair value.

For valuation purposes, Main Street's investment in the External Investment Manager is a control investment. Market quotations are not readily available for this investment, and as a result, Main Street determines the fair value of the External Investment Manager using the Waterfall valuation method under the market approach. In estimating the enterprise value, Main Street analyzes various factors, including the entity's historical and projected financial results, as well as its size, marketability and performance relative to the population of market comparables. This valuation approach estimates the value of the investment as if Main Street were to sell, or exit, the investment. In addition, Main Street

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considers its ability to control the capital structure of the company, as well as the timing of a potential exit, in connection with determining the fair value of the External Investment Manager.

Due to the inherent uncertainty in the valuation process, Main Street's determination of fair value for its Investment Portfolio may differ materially from the values that would have been determined had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events that may occur over the lives of the investments may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. Main Street determines the fair value of each individual investment and records changes in fair value as unrealized appreciation or depreciation.

Main Street uses an internally developed portfolio investment rating system in connection with its investment oversight, portfolio management and analysis and investment valuation procedures for its LMM portfolio companies. This system takes into account both quantitative and qualitative factors of the LMM portfolio company and the investments held therein.

The Board of Directors of Main Street has the final responsibility for overseeing, reviewing and approving, in good faith, Main Street's determination of the fair value for its Investment Portfolio, as well as its valuation procedures, consistent with 1940 Act requirements. Main Street believes its Investment Portfolio as of September 30, 2016 and December 31, 2015 approximates fair value as of those dates based on the markets in which Main Street operates and other conditions in existence on those reporting dates.

2. Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the period. Actual results may differ from these estimates under different conditions or assumptions. Additionally, as explained in Note B.1., the financial statements include investments in the Investment Portfolio whose values have been estimated by Main Street with the oversight, review and approval by Main Street's Board of Directors in the absence of readily ascertainable market values. Because of the inherent uncertainty of the Investment Portfolio valuations, those estimated values may differ materially from the values that would have been determined had a ready market for the securities existed.

3. Cash and Cash Equivalents

Cash and cash equivalents consist of cash and highly liquid investments with an original maturity of three months or less at the date of purchase. Cash and cash equivalents are carried at cost, which approximates fair value.

At September 30, 2016, cash balances totaling $29.0 million exceeded Federal Deposit Insurance Corporation insurance protection levels, subjecting the Company to risk related to the uninsured balance. All of the Company's cash deposits are held at large, established, high credit quality financial institutions and management believes that the risk of loss associated with any uninsured balances is remote.

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4. Marketable Securities and Idle Funds Investments

Marketable securities and idle funds investments include intermediate-term secured debt investments, independently rated debt investments and publicly traded debt and equity investments. See the consolidated schedule of investments for more information on Marketable securities and idle funds investments.

5. Interest, Dividend and Fee Income (Structuring and Advisory Services)

Main Street records interest and dividend income on the accrual basis to the extent amounts are expected to be collected. Dividend income is recorded as dividends are declared by the portfolio company or at the point an obligation exists for the portfolio company to make a distribution. In accordance with Main Street's valuation policies, Main Street evaluates accrued interest and dividend income periodically for collectability. When a loan or debt security becomes 90 days or more past due, and if Main Street otherwise does not expect the debtor to be able to service all of its debt or other obligations, Main Street will generally place the loan or debt security on non-accrual status and cease recognizing interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly improves regarding the debtor's ability to service the debt or other obligations, or if a loan or debt security is fully impaired, sold or written off, Main Street removes it from non-accrual status.

Main Street holds certain debt and preferred equity instruments in its Investment Portfolio that contain payment-in-kind ("PIK") interest and cumulative dividend provisions. The PIK interest, computed at the contractual rate specified in each debt agreement, is periodically added to the principal balance of the debt and is recorded as interest income. Thus, the actual collection of this interest may be deferred until the time of debt principal repayment. Cumulative dividends are recorded as dividend income, and any dividends in arrears are added to the balance of the preferred equity investment. The actual collection of these dividends in arrears may be deferred until such time as the preferred equity is redeemed or sold. To maintain RIC tax treatment (as discussed in Note B.9. below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though Main Street may not have collected the PIK interest and cumulative dividends in cash. Main Street stops accruing PIK interest and cumulative dividends and writes off any accrued and uncollected interest and dividends in arrears when it determines that such PIK interest and dividends in arrears are no longer collectible. For the three months ended September 30, 2016 and 2015, (i) approximately 4.0% and 2.2%, respectively, of Main Street's total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 1.8% and 1.2%, respectively, of Main Street's total investment income was attributable to cumulative dividend income not paid currently in cash. For the nine months ended September 30, 2016 and 2015, (i) approximately 3.7% and 2.1%, respectively, of Main Street's total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 1.1% and 1.0%, respectively, of Main Street's total investment income was attributable to cumulative dividend income not paid currently in cash.

As of September 30, 2016, Main Street's total Investment Portfolio had five investments on non-accrual status, which comprised approximately 0.4% of its fair value and 2.8% of its cost. As of December 31, 2015, Main Street's total Investment Portfolio had six investments on non-accrual status, which comprised approximately 0.4% of its fair value and 3.7% of its cost.

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Main Street may periodically provide services, including structuring and advisory services, to its portfolio companies or other third parties. For services that are separately identifiable and evidence exists to substantiate fair value, fee income is recognized as earned, which is generally when the investment or other applicable transaction closes. Fees received in connection with debt financing transactions for services that do not meet these criteria are treated as debt origination fees and are deferred and accreted into income over the life of the financing.

A presentation of the investment income Main Street received from its Investment Portfolio in each of the periods presented is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,

	2016		2015		2016		2015
	(dollars in thousands)
Interest, fee and dividend income:
Interest income	$	35,580	$	34,167	$	101,181	$	97,010
Dividend income		9,730		6,939		25,094		17,353
Fee income		1,284		1,273		5,059		5,887

Total interest, fee and dividend income	$	46,594	$	42,379	$	131,334	$	120,250

6. Deferred Financing Costs

Deferred financing costs include SBIC debenture commitment fees and SBIC debenture leverage fees on the SBIC debentures which are not accounted for under the fair value option under ASC 825 (as discussed further in Note B.11.). These fees are approximately 3.4% of the total commitment and drawn amounts, as applicable. These deferred financing costs have been capitalized and are being amortized into interest expense over the ten year term of each debenture agreement.

Deferred financing costs also include commitment fees and other costs related to Main Street's multi-year revolving credit facility (the "Credit Facility," as discussed further in Note F) and its notes (as discussed further in Note G). These costs have been capitalized and are amortized into interest expense over the term of the individual instrument.

7. Unearned Income—Debt Origination Fees and Original Issue Discount and Discounts / Premiums to Par Value

Main Street capitalizes debt origination fees received in connection with financings and reflects such fees as unearned income netted against the applicable debt investments. The unearned income from the fees is accreted into interest income based on the effective interest method over the life of the financing.

In connection with its portfolio debt investments, Main Street sometimes receives nominal cost warrants or warrants with an exercise price below the fair value of the underlying equity (together, "nominal cost equity") that are valued as part of the negotiation process with the particular portfolio company. When Main Street receives nominal cost equity, Main Street allocates its cost basis in its investment between its debt security and its nominal cost equity at the time of origination based on amounts negotiated with the particular portfolio company. The allocated amounts are based upon the fair value of the nominal cost equity, which is then used to determine the allocation of cost to the debt security. Any discount recorded on a debt investment resulting from this allocation is reflected as

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unearned income, which is netted against the applicable debt investment, and accreted into interest income based on the effective interest method over the life of the debt investment. The actual collection of this interest is deferred until the time of debt principal repayment.

Main Street may also purchase debt securities at a discount or at a premium to the par value of the debt security. In the case of a purchase at a discount, Main Street records the investment at the par value of the debt security net of the discount, and the discount is accreted into interest income based on the effective interest method over the life of the debt investment. In the case of a purchase at a premium, Main Street records the investment at the par value of the debt security plus the premium, and the premium is amortized as a reduction to interest income based on the effective interest method over the life of the debt investment.

To maintain RIC tax treatment (as discussed in Note B.9. below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though Main Street may not have collected the interest income. For the three months ended September 30, 2016 and 2015, approximately 3.2% and 2.3%, respectively, of Main Street's total investment income was attributable to interest income for the accretion of discounts associated with debt investments, net of any premium reduction. For the nine months ended September 30, 2016 and 2015, approximately 3.0% and 2.7%, respectively, of Main Street's total investment income was attributable to interest income for the accretion of discounts associated with debt investments, net of any premium reduction.

8. Share-Based Compensation

Main Street accounts for its share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—Stock Compensation. Accordingly, for restricted stock awards, Main Street measures the grant date fair value based upon the market price of its common stock on the date of the grant and amortizes the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

Effective January 1, 2016, Main Street elected early adoption of ASU 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting ("ASU 2016-09," as discussed further below in Note B.13.). ASU 2016-09 requires that all excess tax benefits and tax deficiencies (including tax benefits of dividends on share-based payment awards) should be recognized as income tax expense or benefit in the income statement and no longer delay recognition of a tax benefit until the tax benefit is realized through a reduction to taxes payable. The tax effects of exercised or vested awards should be treated as discrete items in the reporting period in which they occur. Additionally, ASU 2016-09 allows an entity to make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, net of forfeitures, (current GAAP) or account for forfeitures when they occur. Amendments related to the timing of when excess tax benefits are recognized, minimum statutory withholding requirements, forfeitures and intrinsic value should be applied using a modified retrospective transition method by means of a cumulative-effect adjustment to equity as of the beginning of the period in which the guidance is adopted. As such, Main Street has recorded a $1.8 million adjustment to "Net Unrealized Appreciation, Net of Income Taxes" on the consolidated balance sheet to capture the cumulative tax effect as of January 1, 2016. The company has elected to account for forfeitures as they occur and this change had no impact on its consolidated financial statements. The additional amendments (cash flows classification, minimum statutory tax withholding requirements and classification of awards as either a liability or equity) did not have an effect on Main Street's consolidated financial statements.

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9. Income Taxes

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax-exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S Federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) the filing of the U.S federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

The Taxable Subsidiaries hold certain portfolio investments for Main Street. The Taxable Subsidiaries permit Main Street to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes and to continue to comply with the "source-income" requirements contained in the RIC tax provisions of the Code. The Taxable Subsidiaries are consolidated with Main Street for U.S. GAAP financial reporting purposes, and the portfolio investments held by the Taxable Subsidiaries are included in Main Street's consolidated financial statements as portfolio investments and recorded at fair value. The Taxable Subsidiaries are not consolidated with MSCC for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities, as a result of their ownership of certain portfolio investments. The taxable income, or loss, of the Taxable Subsidiaries may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. This income tax expense, or benefit, if any, and the related tax assets and liabilities, are reflected in Main Street's consolidated financial statements.

MSCP is included in Main Street's consolidated financial statements for financial reporting purposes. For tax purposes, MSCP has elected to be treated as a taxable entity, and therefore is not consolidated with MSCC for income tax purposes and is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The taxable income, or loss, of MSCP may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. This income tax expense, or benefit, if any, and the related tax assets and liabilities, are reflected in Main Street's consolidated financial statements.

The Taxable Subsidiaries and MSCP use the liability method in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, using statutory tax rates in effect for the year in which the temporary differences are expected to reverse. A valuation allowance is provided, if necessary, against deferred tax assets when it is more likely than not that some portion or all of the deferred tax asset will not be realized.

Taxable income generally differs from net income for financial reporting purposes due to temporary and permanent differences in the recognition of income and expenses. Taxable income generally excludes net unrealized appreciation or depreciation, as investment gains or losses are not included in taxable income until they are realized.

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10. Net Realized Gains or Losses and Net Change in Unrealized Appreciation or Depreciation

Realized gains or losses are measured by the difference between the net proceeds from the sale or redemption of an investment or a financial instrument and the cost basis of the investment or financial instrument, without regard to unrealized appreciation or depreciation previously recognized, and includes investments written-off during the period net of recoveries and realized gains or losses from in-kind redemptions. Net change in unrealized appreciation or depreciation reflects the net change in the fair value of the Investment Portfolio and financial instruments and the reclassification of any prior period unrealized appreciation or depreciation on exited investments and financial instruments to realized gains or losses.

11. Fair Value of Financial Instruments

Fair value estimates are made at discrete points in time based on relevant information. These estimates may be subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Main Street believes that the carrying amounts of its financial instruments, consisting of cash and cash equivalents, receivables, payables and other liabilities approximate the fair values of such items due to the short term nature of these instruments. Marketable securities and idle funds investments may include investments in certificates of deposit, U.S. government agency securities, independently rated debt investments, diversified bond funds and publicly traded debt and equity investments, and the fair value determination for these investments under the provisions of ASC 820 generally consists of Level 1 and 2 observable inputs, similar in nature to those discussed further in Note C.

As part of Main Street's acquisition of the majority of the equity interests of MSC II in January 2010 (the "MSC II Acquisition"), Main Street elected the fair value option under ASC 825, Financial Instruments ("ASC 825") relating to accounting for debt obligations at their fair value, for the MSC II SBIC debentures acquired (the "Acquired Debentures") as part of the acquisition accounting related to the MSC II Acquisition and values those obligations as discussed further in Note C. In order to provide for a more consistent basis of presentation, Main Street has continued to elect the fair value option for SBIC debentures issued by MSC II subsequent to the MSC II Acquisition. When the fair value option is elected for a given SBIC debenture, the deferred loan costs associated with the debenture are fully expensed in the current period to "Net Change in Unrealized Appreciation (Depreciation)—SBIC debentures" as part of the fair value adjustment. Interest incurred in connection with SBIC debentures which are valued at fair value is included in interest expense.

12. Earnings per Share

Basic and diluted per share calculations are computed utilizing the weighted-average number of shares of common stock outstanding for the period. In accordance with ASC 260, Earnings Per Share , the unvested shares of restricted stock awarded pursuant to Main Street's equity compensation plans are participating securities and, therefore, are included in the basic earnings per share calculation. As a result, for all periods presented, there is no difference between diluted earnings per share and basic earnings per share amounts.

13. Recently Issued or Adopted Accounting Standards

In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606) . ASU 2014-9 supersedes the revenue recognition requirements under ASC Topic

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605, Revenue Recognition , and most industry-specific guidance throughout the Industry Topics of the ASC. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Under the new guidance, an entity is required to perform the following five steps: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. The new guidance will significantly enhance comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets. Additionally, the guidance requires improved disclosures as to the nature, amount, timing and uncertainty of revenue that is recognized. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606)—Narrow-Scope Improvements and Practical Expedients. This ASU clarified guidance on assessing collectability, presenting sales tax, measuring noncash consideration, and certain transition matters. The FASB tentatively decided to defer the effective date of the new revenue standard for public entities under U.S. GAAP for one year. If finalized, the new guidance will be effective for the annual reporting period beginning after December 15, 2017, including interim periods within that reporting period. Early adoption would be permitted for annual reporting periods beginning after December 15, 2016. Main Street is currently evaluating the impact the adoption of this new accounting standard will have on its financial statements.

In May 2015, the FASB issued ASU 2015-07, Fair Value Measurements—Disclosures for Certain Entities that Calculate Net Asset Value per Share . This amendment updates guidance intended to eliminate the diversity in practice surrounding how investments measured at net asset value under the practical expedient with future redemption dates have been categorized in the fair value hierarchy. Under the updated guidance, investments for which fair value is measured at net asset value per share using the practical expedient should no longer be categorized in the fair value hierarchy, while investments for which fair value is measured at net asset value per share but the practical expedient is not applied should continue to be categorized in the fair value hierarchy. The updated guidance requires retrospective adoption for all periods presented and is effective for interim and annual reporting periods beginning after December 15, 2015, with early adoption permitted. The Company adopted this standard during the three months ended March 31, 2016. There was no impact of the adoption of this new accounting standard on Main Street's consolidated financial statements as none of its investments are measured through the use of the practical expedient.

In February 2016, the FASB issued ASU 2016-02, Leases , which requires lessees to recognize on the balance sheet a right-of-use asset, representing its right to use the underlying asset for the lease term, and a lease liability for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The standard requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. The new guidance is effective for annual periods beginning after December 15, 2018, and interim periods therein. Early application is permitted. The impact of the adoption of this new accounting standard on Main Street's consolidated financial statements is currently being evaluated.

In March 2016, the FASB issued ASU 2016-09, which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The new

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guidance is effective for annual periods beginning after December 15, 2016, and interim periods therein. Early application is permitted. The Company elected to early adopt this standard during the three months ended March 31, 2016. See further discussion of the impact of the adoption of this standard in Note B.8.

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) , which is intended to reduce the existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for annual periods beginning after December 15, 2017, and interim periods therein. Early application is permitted. The impact of the adoption of this new accounting standard on Main Street's consolidated financial statements is not expected to be material.

From time to time, new accounting pronouncements are issued by the FASB or other standards setting bodies that are adopted by Main Street as of the specified effective date. Main Street believes that the impact of recently issued standards and any that are not yet effective will not have a material impact on its financial statements upon adoption.

NOTE C—FAIR VALUE HIERARCHY FOR INVESTMENTS AND DEBENTURES—PORTFOLIO COMPOSITION

ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value, and enhances disclosure requirements for fair value measurements. Main Street accounts for its investments at fair value.

Fair Value Hierarchy

In accordance with ASC 820, Main Street has categorized its investments based on the priority of the inputs to the valuation technique, into a three-level fair value hierarchy. The fair value hierarchy gives the highest priority to quoted prices in active markets for identical investments (Level 1) and the lowest priority to unobservable inputs (Level 3).

Investments recorded on Main Street's balance sheet are categorized based on the inputs to the valuation techniques as follows:

Level 1—Investments whose values are based on unadjusted quoted prices for identical assets in an active market that Main Street has the ability to access (examples include investments in active exchange-traded equity securities and investments in most U.S. government and agency securities).

Level 2—Investments whose values are based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly for substantially the full term of the investment. Level 2 inputs include the following:

•: Quoted prices for similar assets in active markets (for example, investments in restricted stock);
•: Quoted prices for identical or similar assets in non-active markets (for example, investments in thinly traded public companies);
•: Pricing models whose inputs are observable for substantially the full term of the investment (for example, market interest rate indices); and

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•: Pricing models whose inputs are derived principally from, or corroborated by, observable market data through correlation or other means for substantially the full term of the investment.

Level 3—Investments whose values are based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement (for example, investments in illiquid securities issued by private companies). These inputs reflect management's own assumptions about the assumptions a market participant would use in pricing the investment.

As required by ASC 820, when the inputs used to measure fair value fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level input that is significant to the fair value measurement in its entirety. For example, a Level 3 fair value measurement may include inputs that are observable (Levels 1 and 2) and unobservable (Level 3). Therefore, unrealized appreciation and depreciation related to such investments categorized within the Level 3 tables below may include changes in fair value that are attributable to both observable inputs (Levels 1 and 2) and unobservable inputs (Level 3). Main Street conducts reviews of fair value hierarchy classifications on a quarterly basis. During the classification process, Main Street may determine that it is appropriate to transfer investments between fair value hierarchy Levels. These transfers occur when Main Street has concluded that it is appropriate for the classification of an individual asset to be changed due to a change in the factors used to determine the selection of the Level. Any such changes are deemed to be effective during the quarter in which the transfer occurs.

As of September 30, 2016 and December 31, 2015, all of Main Street's LMM portfolio investments except for the debt and equity investments in one portfolio company consisted of illiquid securities issued by private companies. Those investments which were the exceptions were in a company with publicly traded equity. As a result, the fair value determination for the LMM portfolio investments primarily consisted of unobservable inputs. The fair value determination for the publicly traded equity security consisted of observable inputs in non-active markets for which sufficient observable inputs were available to determine the fair value. As a result, all of Main Street's LMM portfolio investments were categorized as Level 3 as of September 30, 2016 and December 31, 2015, except for the one publicly traded equity security which was categorized as Level 2.

As of September 30, 2016 and December 31, 2015, Main Street's Middle Market portfolio investments consisted primarily of investments in secured and unsecured debt investments and independently rated debt investments. The fair value determination for these investments consisted of a combination of observable inputs in non-active markets for which sufficient observable inputs were not available to determine the fair value of these investments and unobservable inputs. As a result, all of Main Street's Middle Market portfolio investments were categorized as Level 3 as of September 30, 2016 and December 31, 2015.

As of September 30, 2016 and December 31, 2015, Main Street's Private Loan portfolio investments primarily consisted of investments in interest-bearing secured debt investments. The fair value determination for these investments consisted of a combination of observable inputs in non-active markets for which sufficient observable inputs were not available to determine the fair value of these investments and unobservable inputs. As a result, all of Main Street's Private Loan portfolio investments were categorized as Level 3 as of September 30, 2016 and December 31, 2015.

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As of September 30, 2016 and December 31, 2015, Main Street's Other Portfolio investments consisted of illiquid securities issued by private companies. The fair value determination for these investments primarily consisted of unobservable inputs. As a result, all of Main Street's Other Portfolio investments were categorized as Level 3 as of September 30, 2016 and December 31, 2015.

As of December 31, 2015, Main Street's Marketable securities and idle funds investments consisted primarily of investments in publicly traded debt and equity investments. The fair value determination for these investments consisted of a combination of observable inputs in active markets for which sufficient observable inputs were available to determine the fair value of these investments. As a result, all of Main Street's Marketable securities and idle funds investments were categorized as Level 1 as of December 31, 2015.

The fair value determination of each portfolio investment categorized as Level 3 required one or more of the following unobservable inputs:

•: Financial information obtained from each portfolio company, including unaudited statements of operations and balance sheets for the most recent period available as compared to budgeted numbers;
•: Current and projected financial condition of the portfolio company;
•: Current and projected ability of the portfolio company to service its debt obligations;
•: Type and amount of collateral, if any, underlying the investment;
•: Current financial ratios (e.g., fixed charge coverage ratio, interest coverage ratio and net debt/EBITDA ratio) applicable to the investment;
•: Current liquidity of the investment and related financial ratios (e.g., current ratio and quick ratio);
•: Pending debt or capital restructuring of the portfolio company;
•: Projected operating results of the portfolio company;
•: Current information regarding any offers to purchase the investment;
•: Current ability of the portfolio company to raise any additional financing as needed;
•: Changes in the economic environment which may have a material impact on the operating results of the portfolio company;
•: Internal occurrences that may have an impact (both positive and negative) on the operating performance of the portfolio company;
•: Qualitative assessment of key management;
•: Contractual rights, obligations or restrictions associated with the investment; and
•: Other factors deemed relevant.

The significant unobservable inputs used in the fair value measurement of Main Street's LMM equity securities, which are generally valued through an average of the discounted cash flow technique and the market comparable/enterprise value technique (unless one of these approaches is determined to not be appropriate), are (i) EBITDA multiples and (ii) the weighted-average cost of capital

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("WACC"). Significant increases (decreases) in EBITDA multiple inputs in isolation would result in a significantly higher (lower) fair value measurement. On the contrary, significant increases (decreases) in WACC inputs in isolation would result in a significantly lower (higher) fair value measurement. The significant unobservable inputs used in the fair value measurement of Main Street's LMM, Middle Market, Private Loan and Other Portfolio debt securities are (i) risk adjusted discount rates used in the Yield-to-Maturity valuation technique (described in "Note B.1.—Valuation of the Investment Portfolio") and (ii) the percentage of expected principal recovery. Significant increases (decreases) in any of these discount rates in isolation would result in a significantly lower (higher) fair value measurement. Significant increases (decreases) in any of these expected principal recovery percentages in isolation would result in a significantly higher (lower) fair value measurement. However, due to the nature of certain investments, fair value measurements may be based on other criteria, such as third-party appraisals of collateral and fair values as determined by independent third parties, which are not presented in the tables below.

The following tables provide a summary of the significant unobservable inputs used to measure the fair value of Main Street's Level 3 portfolio investments as of September 30, 2016 and December 31, 2015:

Type of Investment	Fair Value as of September 30, 2016 (in thousands)		Valuation Technique	Significant Unobservable Inputs	Range(3)

Equity investments	$	531,672	Discounted cash flow	Weighted-average cost of capital	10.2% - 22.6%	12.9%	13.6%
			Market comparable / Enterprise Value	EBITDA multiple(1)	4.5x - 8.0x(2)	6.9x	5.9x
Debt investments	$	734,110	Discounted cash flow	Risk adjusted discount factor	7.7% - 15.4%(2)	12.0%	11.0%
				Expected principal recovery percentage	5.3% - 100.0%	100.0%	100.0%
Debt investments	$	652,325	Market approach	Third party quote	22.5 - 107.0

Total Level 3 investments	$	1,918,107

(1): EBITDA may include proforma adjustments and/or other addbacks based on specific circumstances related to each investment.
(2): Range excludes outliers that are greater than one standard deviation from the mean. Including these outliers, the range for EBITDA multiple is 4.5x - 17.5x and the range for risk adjusted discount factor is 5.0% - 33.8%.

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(3): Does not include investments for which the valuation technique does not include the use of the applicable fair value input.

Type of Investment	Fair Value as of December 31, 2015 (in thousands)		Valuation Technique	Significant Unobservable Inputs	Range(3)

Equity investments	$	530,612	Discounted cash flow	Weighted-average cost of capital	10.5% - 25.1%	13.4%	13.9%
			Market comparable / Enterprise Value	EBITDA multiple(1)	4.0x - 8.5x(2)	7.0x	5.5x
Debt investments	$	628,492	Discounted cash flow	Risk adjusted discount factor	8.1% - 15.3%(2)	11.9%	11.9%
				Expected principal recovery percentage	16.6% - 100.0%	99.7%	100.0%
Debt investments	$	637,052	Market approach	Third party quote	12.1 - 100.1

Total Level 3 investments	$	1,796,156

(1): EBITDA may include proforma adjustments and/or other addbacks based on specific circumstances related to each investment.
(2): Range excludes outliers that are greater than one standard deviation from the mean. Including these outliers, the range for EBITDA multiple is 4.0x - 18.8x and the range for risk adjusted discount factor is 6.7% - 29.6%.
(3): Does not include investments for which the valuation technique does not include the use of the applicable fair value input.

The following tables provide a summary of changes in fair value of Main Street's Level 3 portfolio investments for the nine month periods ended September 30, 2016 and 2015 (amounts in thousands). Net unrealized appreciation (depreciation) is included in the net change in unrealized appreciation (depreciation)—portfolio investments on the consolidated statements of operations.

Type of Investment

Debt	1,265,544	—	(289,261	)	385,476	34,567		(3,893	)	(5,998	)	1,386,435
Equity	519,966	—	(14,797	)	61,543	(59,681	)	3,821		5,998		516,850
Equity Warrant	10,646	—	(1,011	)	4,750	1,011		(574	)	—		14,822

	1,796,156	—	(305,069	)	451,769	(24,103	)	(646	)	—		1,918,107

(1): Includes the impact of non-cash conversions.

Type of Investment

Debt	1,147,281	—	(439,158	)	672,305	19,844		(32,804	)	(10,779	)	1,356,689
Equity	391,933	—	(16,475	)	58,728	(8,250	)	55,865		10,376		492,177
Equity Warrant	15,636	—	(1,723	)	2,153	(1,687	)	(271	)	—		14,108

	1,554,850	—	(457,356	)	733,186	9,907		22,790		(403	)	1,862,974

(1): Includes the impact of non-cash conversions.

As of September 30, 2016 and December 31, 2015, the fair value determination for the SBIC debentures recorded at fair value primarily consisted of unobservable inputs. As a result, the SBIC debentures which are recorded at fair value were categorized as Level 3. Main Street determines the

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fair value of these instruments primarily using a Yield-to-Maturity approach that analyzes the discounted cash flows of interest and principal for each SBIC debenture recorded at fair value based on estimated market interest rates for debt instruments of similar structure, terms, and maturity. Main Street's estimate of the expected repayment date of principal for each SBIC debenture recorded at fair value is the maturity date of the instrument. The significant unobservable inputs used in the fair value measurement of Main Street's SBIC debentures recorded at fair value are the estimated market interest rates used to fair value each debenture using the yield valuation technique described above. Significant increases (decreases) in the Yield-to-Maturity valuation inputs in isolation would result in a significantly lower (higher) fair value measurement.

The following tables provide a summary of the significant unobservable inputs used to fair value Main Street's Level 3 SBIC debentures as of September 30, 2016 and December 31, 2015 (amounts in thousands):

Type of Instrument		Fair Value as of September 30, 2016			Valuation Technique		Significant Unobservable Inputs		Range		Weighted Average

SBIC debentures		$	74,680		Discounted cash flow		Estimated market interest rates		3.8% - 5.3%			4.4	%

Type of Instrument		Fair Value as of December 31, 2015			Valuation Technique		Significant Unobservable Inputs		Range		Weighted Average

SBIC debentures		$	73,860		Discounted cash flow		Estimated market interest rates		4.1% - 5.8%			4.9	%

The following tables provide a summary of changes for the Level 3 SBIC debentures recorded at fair value for the nine month periods ended September 30, 2016 and 2015 (amounts in thousands):

Type of Instrument	Fair Value as of December 31, 2015		Repayments		New SBIC Debentures		Net Unrealized (Appreciation) Depreciation		Fair Value as of September 30, 2016

SBIC debentures at fair value	$	73,860	$	—	$	—	$	820	$	74,680

Type of Instrument	Fair Value as of December 31, 2014		Repayments		New SBIC Debentures		Net Unrealized (Appreciation) Depreciation		Fair Value as of September 30, 2015

SBIC debentures at fair value	$	72,981	$	—	$	—	$	823	$	73,804

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At September 30, 2016 and December 31, 2015, Main Street's investments and SBIC debentures at fair value were categorized as follows in the fair value hierarchy for ASC 820 purposes:

			Fair Value Measurements

			(in thousands)
At September 30, 2016	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
LMM portfolio investments	$	829,692	$	—	$	2,160	$	827,532
Middle Market portfolio investments		627,944		—		—		627,944
Private Loan portfolio investments		337,735		—		—		337,735
Other Portfolio investments		94,763		—		—		94,763
External Investment Manager		30,133		—		—		30,133

Total portfolio investments		1,920,267		—		2,160		1,918,107
Marketable securities and idle funds investments		—		—		—		—

Total investments	$	1,920,267	$	—	$	2,160	$	1,918,107



SBIC debentures at fair value	$	74,680	$	—	$	—	$	74,680

			Fair Value Measurements

			(in thousands)
At December 31, 2015	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
LMM portfolio investments	$	862,710	$	—	$	3,840	$	858,870
Middle Market portfolio investments		586,900		—		—		586,900
Private Loan portfolio investments		248,313		—		—		248,313
Other Portfolio investments		74,801		—		—		74,801
External Investment Manager		27,272		—		—		27,272

Total portfolio investments		1,799,996		—		3,840		1,796,156
Marketable securities and idle funds investments		3,693		3,693		—		—

Total investments	$	1,803,689	$	3,693	$	3,840	$	1,796,156



SBIC debentures at fair value	$	73,860	$	—	$	—	$	73,860

Investment Portfolio Composition

Main Street's LMM portfolio investments primarily consist of secured debt, equity warrants and direct equity investments in privately held, LMM companies based in the United States. Main Street's LMM portfolio companies generally have annual revenues between $10 million and $150 million, and its LMM investments generally range in size from $5 million to $50 million. The LMM debt investments are typically secured by either a first or second priority lien on the assets of the portfolio

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company, generally bear interest at fixed rates, and generally have a term of between five and seven years from the original investment date. In most LMM portfolio investments, Main Street receives nominally priced equity warrants and/or makes direct equity investments in connection with a debt investment.

Main Street's Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest-bearing debt securities in privately held companies based in the United States that are generally larger in size than the companies included in Main Street's LMM portfolio. Main Street's Middle Market portfolio companies generally have annual revenues between $150 million and $1.5 billion, and its Middle Market investments generally range in size from $3 million to $15 million. Main Street's Middle Market portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Main Street's private loan ("Private Loan") portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments Main Street holds in its LMM portfolio and Middle Market portfolio. Main Street's Private Loan portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Main Street's other portfolio ("Other Portfolio") investments primarily consist of investments which are not consistent with the typical profiles for LMM, Middle Market and Private Loan portfolio investments, including investments which may be managed by third parties. In the Other Portfolio, Main Street may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds. For Other Portfolio investments, Main Street generally receives distributions related to the assets held by the portfolio company. Those assets are typically expected to be liquidated over a five to ten year period.

Main Street's external asset management business is conducted through its External Investment Manager. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. Main Street entered into an agreement with the External Investment Manager to share employees in connection with its asset management business generally, and specifically for its relationship with HMS Income Fund, Inc. ("HMS Income"). Through this agreement, Main Street shares employees with the External Investment Manager, including their related infrastructure, business relationships, management expertise and capital raising capabilities. In the first quarter of 2014, Main Street began allocating cost to the External Investment Manager pursuant to the sharing agreement. Main Street's total expenses for the three months ended September 30, 2016 and 2015 are net of the costs allocated to the External Investment Manager of $1.2 million and $1.1 million, respectively. Main Street's total expenses for the nine months ended September 30, 2016 and 2015 are net of the costs allocated to the External Investment Manager of $3.7 million and $3.1 million, respectively.

Investment income, consisting of interest, dividends and fees, can fluctuate dramatically due to various factors, including the level of new investment activity, repayments of debt investments or sales of equity interests. Investment income in any given year could also be highly concentrated among several portfolio companies. For the three and nine months ended September 30, 2016 and 2015, Main

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Street did not record investment income from any single portfolio company in excess of 10% of total investment income.

The following tables provide a summary of Main Street's investments in the LMM, Middle Market and Private Loan portfolios as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager which are discussed further below):

	As of September 30, 2016

	LMM(a)		Middle Market		Private Loan
	(dollars in millions)
Number of portfolio companies		71		81		45
Fair value	$	829.7	$	627.9	$	337.7
Cost	$	703.6	$	658.0	$	353.8
% of portfolio at cost—debt		68.8%		97.5%		94.3%
% of portfolio at cost—equity		31.2%		2.5%		5.7%
% of debt investments at cost secured by first priority lien		91.5%		87.6%		87.6%
Weighted-average annual effective yield(b)		12.5%		8.4%		9.6%
Average EBITDA(c)	$	6.2	$	101.6	$	21.1

(a): At September 30, 2016, Main Street had equity ownership in approximately 99% of its LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 36%.
(b): The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of September 30, 2016, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of Main Street's common stock will realize on its investment because it does not reflect Main Street's expenses or any sales load paid by an investor.
(c): The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including five LMM portfolio companies, three Middle Market portfolio companies and three Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for Main Street's investments in these portfolio companies.

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	As of December 31, 2015

	LMM(a)		Middle Market		Private Loan
	(dollars in millions)
Number of portfolio companies		71		86		40
Fair value	$	862.7	$	586.9	$	248.3
Cost	$	685.6	$	637.2	$	268.6
% of total investments at cost—debt		70.4%		98.3%		94.3%
% of total investments at cost—equity		29.6%		1.7%		5.7%
% of debt investments at cost secured by first priority lien		91.8%		86.6%		87.3%
Weighted-average annual effective yield(b)		12.2%		8.0%		9.5%
Average EBITDA(c)	$	6.0	$	98.8	$	13.1

(a): At December 31, 2015, Main Street had equity ownership in approximately 96% of its LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 36%.
(b): The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of December 31, 2015, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of Main Street's common stock will realize on its investment because it does not reflect Main Street's expenses or any sales load paid by an investor.
(c): The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including five LMM portfolio companies, three Middle Market portfolio companies and six Private Loan portfolio companies as EBITDA is not a meaningful valuation metric for Main Street's investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.

As of September 30, 2016, Main Street had Other Portfolio investments in ten companies, collectively totaling approximately $94.8 million in fair value and approximately $101.3 million in cost basis and which comprised 4.9% of Main Street's Investment Portfolio at fair value. As of December 31, 2015, Main Street had Other Portfolio investments in ten companies, collectively totaling approximately $74.8 million in fair value and approximately $75.2 million in cost basis and which comprised approximately 4.2% of Main Street's Investment Portfolio at fair value.

As discussed further in Note A.1., Main Street holds an investment in the External Investment Manager, a wholly owned subsidiary that is treated as a portfolio investment. As of September 30, 2016, there was no cost basis in this investment and the investment had a fair value of $30.1 million, which comprised 1.6% of Main Street's Investment Portfolio at fair value. As of December 31, 2015, there was no cost basis in this investment and the investment had a fair value of $27.3 million, which comprised 1.5% of Main Street's Investment Portfolio at fair value.

The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at cost and

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fair value by type of investment as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments, as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost:

First lien debt	75.6%	75.8%
Equity	13.9%	13.5%
Second lien debt	8.5%	8.7%
Equity warrants	1.0%	0.9%
Other	1.0%	1.1%

	100.0%	100.0%

Fair Value:

First lien debt	68.3%	66.1%
Equity	22.0%	24.9%
Second lien debt	8.0%	7.7%
Equity warrants	0.8%	0.6%
Other	0.9%	0.7%

	100.0%	100.0%

The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments by geographic region of the United States and other countries at cost and fair value as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments, as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager). The geographic composition is determined by the location of the corporate headquarters of the portfolio company.

Cost:

Southwest	29.5%	33.4%
Midwest	21.5%	16.7%
Northeast	15.4%	18.3%
Southeast	15.6%	13.5%
West	14.7%	14.6%
Canada	1.7%	2.2%
Other Non-United States	1.6%	1.3%

	100.0%	100.0%

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Fair Value:

Southwest	30.4%	36.7%
Midwest	19.8%	15.1%
West	17.0%	16.1%
Southeast	15.2%	12.6%
Northeast	14.6%	16.3%
Canada	1.5%	2.0%
Other Non-United States	1.5%	1.2%

	100.0%	100.0%

Main Street's LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments are in companies conducting business in a variety of industries. The following tables summarize the composition of Main Street's total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments by industry at cost and fair value

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(Unaudited)

as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost:

Energy Equipment & Services	7.6%	7.3%
Hotels, Restaurants & Leisure	6.8%	7.9%
Media	5.8%	5.6%
Machinery	5.7%	5.7%
Construction & Engineering	4.7%	4.6%
Electronic Equipment, Instruments & Components	4.5%	4.3%
IT Services	4.2%	5.1%
Specialty Retail	4.1%	5.1%
Commercial Services & Supplies	4.0%	3.3%
Internet Software & Services	3.6%	3.1%
Diversified Telecommunication Services	3.4%	2.9%
Auto Components	3.4%	2.7%
Food Products	3.1%	2.4%
Diversified Consumer Services	2.9%	3.7%
Health Care Equipment & Supplies	2.9%	3.1%
Health Care Providers & Services	2.8%	4.1%
Diversified Financial Services	2.3%	2.3%
Software	2.2%	4.5%
Computers & Peripherals	1.9%	0.0%
Professional Services	1.9%	1.9%
Communications Equipment	1.9%	0.0%
Pharmaceuticals	1.7%	1.9%
Road & Rail	1.6%	1.6%
Building Products	1.6%	1.9%
Oil, Gas & Consumable Fuels	1.5%	2.1%
Consumer Finance	1.5%	0.8%
Distributors	1.2%	0.7%
Leisure Equipment & Products	1.1%	1.1%
Air Freight & Logistics	1.0%	1.1%
Aerospace & Defense	1.0%	1.0%
Other(1)	8.1%	8.2%

	100.0%	100.0%

(1): Includes various industries with each industry individually less than 1.0% of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at each date.

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(Unaudited)

Fair Value:

Hotels, Restaurants & Leisure	6.9%	7.8%
Machinery	6.8%	7.0%
Energy Equipment & Services	5.8%	6.0%
Diversified Consumer Services	5.5%	5.7%
Media	5.4%	5.1%
Construction & Engineering	5.2%	5.1%
Specialty Retail	4.3%	6.0%
IT Services	4.0%	4.6%
Commercial Services & Supplies	4.0%	3.1%
Electronic Equipment, Instruments & Components	3.9%	3.7%
Internet Software & Services	3.5%	2.9%
Auto Components	3.3%	2.8%
Health Care Equipment & Supplies	2.9%	2.9%
Food Products	2.9%	2.1%
Diversified Telecommunication Services	2.7%	2.7%
Health Care Providers & Services	2.7%	3.3%
Road & Rail	2.4%	2.6%
Diversified Financial Services	2.3%	2.2%
Software	2.2%	5.9%
Professional Services	1.9%	1.7%
Communications Equipment	1.9%	0.0%
Computers & Peripherals	1.8%	0.0%
Pharmaceuticals	1.5%	1.7%
Building Products	1.4%	1.6%
Consumer Finance	1.3%	0.6%
Oil, Gas & Consumable Fuels	1.2%	1.2%
Air Freight & Logistics	1.2%	1.3%
Leisure Equipment & Products	1.1%	1.1%
Distributors	1.1%	0.6%
Other(1)	8.9%	8.7%

	100.0%	100.0%

(1): Includes various industries with each industry individually less than 1.0% of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at each date.

At September 30, 2016 and December 31, 2015, Main Street had no portfolio investment that was greater than 10% of the Investment Portfolio at fair value.

Unconsolidated Significant Subsidiaries

In accordance with Rules 3-09 and 4-08(g) of Regulation S-X, Main Street must determine which of its unconsolidated controlled portfolio companies, if any, are considered "significant subsidiaries". In evaluating these unconsolidated controlled portfolio companies, there are three tests utilized to

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(Unaudited)

determine if any of Main Street's Control Investments (as defined in Note A, including those unconsolidated controlled portfolio companies in which Main Street does not own greater than 50% of the voting securities) are considered significant subsidiaries: the investment test, the asset test and the income test. Rule 3-09 of Regulation S-X, as interpreted by the SEC, requires Main Street to include separate audited financial statements of an unconsolidated majority-owned subsidiary (Control Investments in which Main Street owns greater than 50% of the voting securities) in an annual report if any of the three tests exceed 20% of Main Street's total investments at fair value, total assets or total income, respectively. Rule 4-08(g) of Regulation S-X requires summarized financial information of a Control Investment in an annual report if any of the three tests exceeds 10% of Main Street's annual total amounts and Rule 10-01(b)(1) of Regulation S-X requires summarized financial information in a quarterly report if any of the three tests exceeds 20% of Main Street's year-to-date total amounts.

As of September 30, 2016 and December 31, 2015, Main Street had no single Control Investment that represented greater than 20% of its total Investment Portfolio at fair value and no single investment whose total assets represented greater than 20% of its total assets. For each of the nine months ended September 30, 2016 and 2015, Main Street had no single Control Investment whose income represented greater than 20% of its total income, except for the External Investment Manager for the nine months ended September 30, 2015. The summarized financial information for the External Investment Manager is included in Note D.

NOTE D—EXTERNAL INVESTMENT MANAGER

As discussed further in Note A.1., the External Investment Manager provides investment management and other services to External Parties. The External Investment Manager is accounted for as a portfolio investment of MSCC since the External Investment Manager conducts all of its investment management activities for External Parties.

During May 2012, Main Street entered into an investment sub-advisory agreement with HMS Adviser, LP ("HMS Adviser"), which is the investment advisor to HMS Income, a non-publicly traded BDC, to provide certain investment advisory services to HMS Adviser. In December 2013, after obtaining required no-action relief from the SEC to allow it to own a registered investment adviser, Main Street assigned the sub-advisory agreement to the External Investment Manager since the fees received from such arrangement could otherwise have negative consequences on MSCC's ability to meet the source-of-income requirement necessary for it to maintain its RIC tax treatment. Under the investment sub-advisory agreement, the External Investment Manager is entitled to 50% of the base management fee and the incentive fees earned by HMS Adviser under its advisory agreement with HMS Income. Based upon several fee waiver agreements with HMS Income and HMS Adviser, the External Investment Manager did not begin accruing the base management fee and incentive fees, if any, until January 1, 2014. The External Investment Manager has conditionally agreed to waive a limited amount of the incentive fees otherwise earned. During the three months ended September 30, 2016 and 2015, the External Investment Manager earned $2.5 million and $2.1 million, respectively, of management fees (net of fees waived, if any) under the sub-advisory agreement with HMS Adviser. During the nine months ended September 30, 2016 and 2015, the External Investment Manager earned $7.1 million and $5.5 million, respectively, of management fees (net of fees waived, if any) under the sub-advisory agreement with HMS Adviser.

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(Unaudited)

The investment in the External Investment Manager is accounted for using fair value accounting, with the fair value determined by Main Street and approved, in good faith, by Main Street's Board of Directors. Main Street determines the fair value of the External Investment Manager using the Waterfall valuation method under the market approach (see further discussion in Note B.1.). Any change in fair value of the investment in the External Investment Manager is recognized on Main Street's consolidated statement of operations in "Net Change in Unrealized Appreciation (Depreciation)—Portfolio investments".

The External Investment Manager has elected, for tax purposes, to be treated as a taxable entity, is not consolidated with Main Street for income tax purposes and is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The External Investment Manager has elected to be treated as a taxable entity to enable it to receive fee income and to allow MSCC to continue to comply with the "source-income" requirements contained in the RIC tax provisions of the Code. The taxable income, or loss, of the External Investment Manager may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. The External Investment Manager provides for any income tax expense, or benefit, and any tax assets or liabilities in its separate financial statements.

Main Street shares employees with the External Investment Manager and allocates costs related to such shared employees to the External Investment Manager generally based on a combination of the direct time spent, new investment origination activity and assets under management, depending on the nature of the expense. For the three months ended September 30, 2016 and 2015, Main Street allocated $1.2 million and $1.1 million of total expenses, respectively, to the External Investment Manager. For the nine months ended September 30, 2016 and 2015, Main Street allocated $3.7 million and $3.1 million of total expenses, respectively, to the External Investment Manager. The total contribution of the External Investment Manager to Main Street's net investment income consists of the combination of the expenses allocated to the External Investment Manager and dividend income from the External Investment Manager. For the three months ended September 30, 2016 and 2015, the total contribution to net investment income was $2.0 million and $1.8 million, respectively. For the nine months ended September 30, 2016 and 2015, the total contribution to net investment income was $5.8 million and $4.7 million, respectively.

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(Unaudited)

Summarized financial information from the separate financial statements of the External Investment Manager as of September 30, 2016 and December 31, 2015 and for the three and nine months ended September 30, 2016 and 2015 is as follows:

	As of September 30,		As of December 31,

	2016		2015
	(dollars in thousands)
Cash	$	30	$	31
Accounts receivable—HMS Income		2,466		2,262

Total assets	$	2,496	$	2,293



Accounts payable to MSCC and its subsidiaries	$	1,424	$	1,333
Dividend payable to MSCC		793		677
Taxes payable		279		283
Equity		—		—

Total liabilities and equity	$	2,496	$	2,293

	Three Months Ended September 30						Nine Months Ended September 30,

	2016			2015			2016			2015
	(dollars in thousands)
Management fee income	$	2,471		$	2,105		$	7,058		$	5,500
Expenses allocated from MSCC or its subsidiaries:
Salaries, share-based compensation and other personnel costs		(833	)		(764	)		(2,522	)		(2,146	)
Other G&A expenses		(391	)		(381	)		(1,217	)		(987	)

Total allocated expenses		(1,224	)		(1,145	)		(3,739	)		(3,133	)
Pre-tax income		1,247			960			3,319			2,367
Tax expense		(454	)		(350	)		(1,210	)		(847	)

Net income	$	793		$	610		$	2,109		$	1,520

NOTE E—SBIC DEBENTURES

SBIC debentures payable were $231.0 million and $225.0 million at September 30, 2016 and December 31, 2015, respectively. SBIC debentures provide for interest to be paid semi-annually, with principal due at the applicable 10-year maturity date of each debenture. In August 2016, Main Street received a license from the SBA to operate a third SBIC, which at the time provided Main Street with up to $125.0 million of additional long-term, fixed interest rate debt capital through the issuance of SBA-guaranteed debentures. During September 2016, Main Street issued $6.0 million of SBIC debentures, leaving $119.0 million of additional capacity. The weighted-average annual interest rate on the SBIC debentures was 4.1% as of September 30, 2016 and 4.2% as of December 31, 2015. The first principal maturity due under the existing SBIC debentures is in 2017, and the weighted-average remaining duration as of September 30, 2016 was approximately 5.0 years. For the three months ended September 30, 2016 and 2015, Main Street recognized interest expense attributable to the SBIC debentures of $2.5 million in each period. For the nine months ended September 30, 2016 and 2015,

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(Unaudited)

Main Street recognized interest expense attributable to the SBIC debentures of $7.5 million and $7.4 million, respectively. Main Street has incurred upfront leverage and other miscellaneous fees of approximately 3.4% of the debenture principal amount. In accordance with SBA regulations, the Funds are precluded from incurring additional non-SBIC debt without the prior approval of the SBA. The Funds are subject to annual compliance examinations by the SBA. There have been no historical findings resulting from these examinations.

As of September 30, 2016, the recorded value of the SBIC debentures was $230.5 million which consisted of (i) $74.7 million recorded at fair value, or $0.5 million less than the $75.2 million par value of the SBIC debentures issued in MSC II (ii) $149.8 million recorded at par value and held in MSMF and (iii) $6.0 million recorded at par value and held in MSC III. As of September 30, 2016, if Main Street had adopted the fair value option under ASC 825 for all of its SBIC debentures, Main Street estimates the fair value of its SBIC debentures would be approximately $223.8 million, or $7.2 million less than the $231.0 million face value of the SBIC debentures.

NOTE F—CREDIT FACILITY

Main Street maintains the Credit Facility to provide additional liquidity to support its investment and operational activities. The Credit Facility includes total commitments of $555.0 million from a diversified group of fourteen lenders and matures in September 2020. The Credit Facility also contains an accordion feature which allows Main Street to increase the total commitments under the facility to up to $750.0 million from new and existing lenders on the same terms and conditions as the existing commitments.

Borrowings under the Credit Facility bear interest, subject to Main Street's election, on a per annum basis at a rate equal to the applicable LIBOR rate (0.53% as of September 30, 2016) plus (i) 1.875% (or the applicable base rate (Prime Rate of 3.50% as of September 30, 2016) plus 0.875%) as long as Main Street maintains an investment grade rating and meets certain agreed upon excess collateral and maximum leverage requirements, (ii) 2.0% (or the applicable base rate plus 1.0%) if Main Street maintains an investment grade rating but, does not meet certain excess collateral and maximum leverage requirements or (iii) 2.25% (or the applicable base rate plus 1.25%) if Main Street does not maintain an investment grade rating. Main Street pays unused commitment fees of 0.25% per annum on the unused lender commitments under the Credit Facility. The Credit Facility is secured by a first lien on the assets of MSCC and its subsidiaries, excluding the equity ownership or assets of the Funds and the External Investment Manager. The Credit Facility contains certain affirmative and negative covenants, including but not limited to: (i) maintaining a minimum availability of at least 10% of the borrowing base, (ii) maintaining an interest coverage ratio of at least 2.0 to 1.0, (iii) maintaining an asset coverage ratio of at least 1.5 to 1.0 and (iv) maintaining a minimum tangible net worth. The Credit Facility is provided on a revolving basis through its final maturity date in September 2020, and contains two, one-year extension options which could extend the final maturity by up to two years, subject to certain conditions, including lender approval.

At September 30, 2016, Main Street had $313.0 million in borrowings outstanding under the Credit Facility. As of September 30, 2016, if Main Street had adopted the fair value option under ASC 825 for its Credit Facility, Main Street estimates its fair value would approximate its recorded value. Main Street recognized interest expense related to the Credit Facility, including unused commitment fees and amortization of deferred loan costs, of $2.5 million and $2.2 million for the three months ended September 30, 2016 and 2015, respectively, and $6.7 million and $5.5 million for the nine month

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(Unaudited)

periods ended September 30, 2016 and 2015, respectively. As of September 30, 2016, the interest rate on the Credit Facility was 2.4%. The average interest rate was 2.4% and 2.3% for the three and nine months ended September 30, 2016, respectively. As of September 30, 2016, Main Street was in compliance with all financial covenants of the Credit Facility.

NOTE G—NOTES

6.125% Notes

In April 2013, Main Street issued $92.0 million, including the underwriters full exercise of their option to purchase additional principal amounts to cover over-allotments, in aggregate principal amount of 6.125% Notes due 2023 (the "6.125% Notes"). The 6.125% Notes are unsecured obligations and rank pari passu with Main Street's current and future unsecured indebtedness; senior to any of its future indebtedness that expressly provides it is subordinated to the 6.125% Notes; effectively subordinated to all of its existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under its Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of its subsidiaries, including without limitation, the indebtedness of the Funds. The 6.125% Notes mature on April 1, 2023, and may be redeemed in whole or in part at any time or from time to time at Main Street's option on or after April 1, 2018. The 6.125% Notes bear interest at a rate of 6.125% per year payable quarterly on January 1, April 1, July 1 and October 1 of each year. The total net proceeds to Main Street from the 6.125% Notes, after underwriting discounts and estimated offering expenses payable by Main Street, were approximately $89.0 million. Main Street has listed the 6.125% Notes on the New York Stock Exchange under the trading symbol "MSCA". Main Street may from time to time repurchase the 6.125% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of September 30, 2016, the outstanding balance of the 6.125% Notes was $90.7 million. As of September 30, 2016, if Main Street had adopted the fair value option under ASC 825 for the 6.125% Notes, Main Street estimates the fair value would be approximately $94.1 million. Main Street recognized interest expense related to the 6.125% Notes, including amortization of deferred loan costs, of $1.5 million for each of the three months ended September 30, 2016 and 2015, and $4.4 million for each of the nine months ended September 30, 2016 and 2015.

The indenture governing the 6.125% Notes (the "6.125% Notes Indenture") contains certain covenants, including covenants requiring Main Street's compliance with (regardless of whether Main Street is subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring Main Street to provide financial information to the holders of the 6.125% Notes and the Trustee if Main Street ceases to be subject to the reporting requirements of the Securities Exchange Act of 1934. These covenants are subject to limitations and exceptions that are described in the 6.125% Notes Indenture. As of September 30, 2016, Main Street was in compliance with these covenants.

4.50% Notes

In November 2014, Main Street issued $175.0 million in aggregate principal amount of 4.50% unsecured notes due 2019 (the "4.50% Notes") at an issue price of 99.53%. The 4.50% Notes are unsecured obligations and rank pari passu with Main Street's current and future unsecured indebtedness; senior to any of its future indebtedness that expressly provides it is subordinated to the 4.50% Notes; effectively subordinated to all of its existing and future secured indebtedness, to the

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(Unaudited)

extent of the value of the assets securing such indebtedness, including borrowings under its Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of its subsidiaries, including without limitation, the indebtedness of the Funds. The 4.50% Notes mature on December 1, 2019, and may be redeemed in whole or in part at any time at Main Street's option subject to certain make-whole provisions. The 4.50% Notes bear interest at a rate of 4.50% per year payable semi-annually on June 1 and December 1 of each year. The total net proceeds from the 4.50% Notes, resulting from the issue price and after underwriting discounts and estimated offering expenses payable by us, were approximately $171.2 million. Main Street may from time to time repurchase the 4.50% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of September 30, 2016, the outstanding balance of the 4.50% Notes was $175.0 million. As of September 30, 2016, if Main Street had adopted the fair value option under ASC 825 for the 4.50% Notes, Main Street estimates its fair value would be approximately $179.9 million. Main Street recognized interest expense related to the 4.50% Notes, including amortization of deferred loan costs, of $2.1 million for each of the three months ended September 30, 2016 and 2015, and $6.4 million for each of the nine months ended September 30, 2016 and 2015.

The indenture governing the 4.50% Notes (the "4.50% Notes Indenture") contains certain covenants, including covenants requiring Main Street's compliance with (regardless of whether Main Street is subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring Main Street to provide financial information to the holders of the 4.50% Notes and the Trustee if Main Street ceases to be subject to the reporting requirements of the Securities Exchange Act of 1934. These covenants are subject to limitations and exceptions that are described in the 4.50% Notes Indenture. As of September 30, 2016, Main Street was in compliance with these covenants.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE H—FINANCIAL HIGHLIGHTS

	Nine Months Ended September 30,

	2016			2015
Per Share Data:
NAV at the beginning of the period	$	21.24		$	20.85
Net investment income(1)		1.66			1.61
Net realized gain (loss)(1)(2)		0.65			(0.19	)
Net change in net unrealized appreciation (depreciation)(1)(2)		(0.56	)		0.42
Income tax benefit(1)(2)		0.01			0.15

Net increase in net assets resulting from operations(1)		1.76			1.99
Dividends paid from net investment income		(1.06	)		(1.79	)
Distributions from capital gains		(0.84	)		(0.05	)

Total dividends paid		(1.90	)		(1.84	)
Impact of the net change in monthly dividends declared prior to the end of the period and paid in the subsequent period		(0.01	)		(0.01	)
Accretive effect of stock offerings (issuing shares above NAV per share)		0.42			0.71
Accretive effect of DRIP issuance (issuing shares above NAV per share)		0.06			0.08
Other(3)		0.05			0.01

NAV at the end of the period	$	21.62		$	21.79



Market value at the end of the period	$	34.33		$	26.66
Shares outstanding at the end of the period		52,931,917			50,079,178

(1): Based on weighted average number of common shares outstanding for the period.
(2): Net realized gains or losses, net change in unrealized appreciation or depreciation, and income taxes can fluctuate significantly from period to period.
(3): Includes the impact of the different share amounts as a result of calculating certain per share data based on the weighted average basic shares outstanding during the period and certain per share data based on the shares outstanding as of a period end or transaction date and the impact of the early adoption of the accounting standard ASU 2016-09 in the three months ended March 31, 2016 relating to the accounting for share-based payment transactions (see further discussion in Note B.8.).

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(Unaudited)

	Nine Months Ended September 30,

	2016		2015
	(dollars in thousands)
NAV at end of period	$	1,144,350	$	1,090,981
Average NAV	$	1,097,839	$	1,051,418
Average outstanding debt	$	792,966	$	742,993
Ratio of total expenses, including income tax expense, to average NAV(1)(2)		4.11%		3.38%
Ratio of operating expenses to average NAV(2)(3)		4.20%		4.05%
Ratio of operating expenses, excluding interest expense, to average NAV(2)(3)		1.92%		1.79%
Ratio of net investment income to average NAV(2)		7.78%		7.47%
Portfolio turnover ratio(2)		18.11%		16.68%
Total investment return(2)(4)		25.35%		–6.74%
Total return based on change in NAV(2)(5)		8.49%		10.31%

(1): Total expenses are the sum of operating expenses and net income tax provision/benefit. Net income tax provision/benefit includes the accrual of net deferred tax provision/benefit relating to the net unrealized appreciation/depreciation on portfolio investments held in Taxable Subsidiaries and due to the change in the loss carryforwards, which are non-cash in nature and may vary significantly from period to period. Main Street is required to include net deferred tax provision/benefit in calculating its total expenses even though these net deferred taxes are not currently payable/receivable.
(2): Not annualized.
(3): Operating expenses include interest, compensation, general and administrative and share-based compensation expenses, net of expenses allocated to the External Investment Manager.
(4): Total investment return based on purchase of stock at the current market price on the first day and a sale at the current market price on the last day of each period reported on the table and assumes reinvestment of dividends at prices obtained by Main Street's dividend reinvestment plan during the period. The return does not reflect any sales load that may be paid by an investor.
(5): Total return based on change in net asset value was calculated using the sum of ending net asset value plus dividends to stockholders and other non-operating changes during the period, as divided by the beginning net asset value.

NOTE I—DIVIDENDS, DISTRIBUTIONS AND TAXABLE INCOME

Main Street paid regular monthly dividends of $0.180 per share for each month of January through September 2016, totaling approximately $28.3 million, or $0.540 per share, for the three months ended September 30, 2016, and $83.1 million, or $1.620 per share, for the nine months ended September 30,

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(Unaudited)

2016. The third quarter 2016 regular monthly dividends represent a 2.9% increase from the regular monthly dividends paid for the third quarter of 2015. Additionally, Main Street paid a $0.275 per share supplemental semi-annual dividend, totaling $14.2 million, in June 2016 compared to a $13.7 million, or $0.275 per share, paid in June 2015. The regular monthly dividends equaled a total of approximately $26.2 million, or $0.525 per share, for the three months ended September 30, 2015, and $75.4 million, or $1.560 per share, for the nine months ended September 30, 2015.

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate level U.S. federal income taxes on any net ordinary income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S Federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) filing of the U.S federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

The determination of the tax attributes for Main Street's distributions is made annually, based upon its taxable income for the full year and distributions paid for the full year. Therefore, a determination made on an interim basis may not be representative of the actual tax attributes of distributions for a full year. Ordinary dividend distributions from a RIC do not qualify for the 20% maximum tax rate (plus a 3.8% Medicare surtax, if applicable) on dividend income from domestic corporations and qualified foreign corporations, except to the extent that the RIC received the income in the form of qualifying dividends from domestic corporations and qualified foreign corporations. The tax attributes for distributions will generally include both ordinary income and capital gains, but may also include qualified dividends or return of capital.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Listed below is a reconciliation of "Net increase in net assets resulting from operations" to taxable income and to total distributions declared to common stockholders for the nine months ended September 30, 2016 and 2015.

	Nine Months Ended September 30,

	2016			2015
	(estimated, dollars in thousands)
Net increase in net assets resulting from operations	$	90,907		$	96,895
Book tax difference from share-based compensation expense		(708	)		(662	)
Net change in net unrealized (appreciation) depreciation		28,829			(20,372	)
Income tax benefit		(1,018	)		(7,004	)
Pre-tax book loss not consolidated for tax purposes		16,771			15,240
Book income and tax income differences, including debt origination, structuring fees, dividends, realized gains (losses) and changes in estimates		(4,141	)		992

Estimated taxable income(1)		130,640			85,089
Taxable income earned in prior year and carried forward for distribution in current year		29,683			38,638
Taxable income earned prior to period end and carried forward for distribution next period		(72,094	)		(42,279	)
Dividend payable as of period end and paid in the following period		9,783			9,014

Total distributions accrued or paid to common stockholders	$	98,012		$	90,462

(1): Main Street's taxable income for each period is an estimate and will not be finally determined until the company files its tax return for each year. Therefore, the final taxable income, and the taxable income earned in each period and carried forward for distribution in the following period, may be different than this estimate.

MSCC's wholly owned subsidiary MSCP is included in Main Street's consolidated financial statements for financial reporting purposes. For tax purposes, MSCP has elected to be treated as a

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

taxable entity, and therefore is not consolidated with MSCC for income tax purposes and is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The taxable income, or loss, of MSCP may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. This income tax expense, or benefit, if any, and the related tax assets and liabilities, are reflected in Main Street's consolidated financial statements.

The income tax expense, or benefit, and the related tax assets and liabilities, generated by the Taxable Subsidiaries and MSCP, if any, are reflected in Main Street's consolidated financial statements. For the three months ended September 30, 2016, Main Street recognized a net income tax benefit of $0.5 million, principally consisting of a deferred tax benefit of $1.4 million which is primarily the result of the net activity relating to the portfolio investments held in the Taxable Subsidiaries including changes in the loss carryforwards, changes in net unrealized appreciation or depreciation and other temporary book-tax differences, partially offset by a $0.9 million current tax expense which is primarily related to a $1.0 million accrual for excise tax on Main Street's estimated undistributed taxable income. For the nine months ended September 30, 2016, Main Street recognized a net income tax benefit of $1.0 million, principally consisting of a deferred tax benefit of $3.4 million which is primarily the result of the net activity relating to the portfolio investments held in the Taxable Subsidiaries including changes in the loss carryforwards, changes in net unrealized appreciation or depreciation and temporary book-tax differences, partially offset by $2.4 million in current tax expense which is composed of a (i) $2.1 million accrual for excise tax on its estimated undistributed taxable income and (ii) $0.3 million of accruals for current U.S. federal income and state taxes. For the three months ended September 30, 2015, Main Street recognized a net income tax benefit of $3.2 million, which principally consisted of a deferred tax benefit of $2.7 million which was primarily the result of the net activity relating to the portfolio investments held in the Taxable Subsidiaries including changes in the loss carryforwards, changes in net unrealized appreciation or depreciation and other temporary book tax differences and a $0.5 million benefit for other current taxes, which was primarily related to a $0.7 million benefit for current U.S. federal income and state taxes, partially offset by $0.2 million accrual for excise tax on its estimated undistributed taxable income. For the nine months ended September 30, 2015, Main Street recognized a net income tax benefit of $7.0 million, which principally consisted of a deferred tax benefit of $8.5 million primarily the result of the net activity relating to the portfolio investments held in the Taxable Subsidiaries including changes in the loss carryforwards, changes in net unrealized appreciation or depreciation and temporary book tax differences, partially offset by $1.5 million in other current taxes, which principally consisted of $0.8 million of accruals for current U.S. federal income and state taxes, and a $0.7 million accrual for excise tax on its estimated undistributed taxable income.

The net deferred tax asset at September 30, 2016 and December 31, 2015 was $9.2 million and $4.0 million, respectively, primarily related to loss carryforwards, timing differences in net unrealized appreciation or depreciation and other temporary book-tax differences relating to portfolio investments held by the Taxable Subsidiaries. In addition, during the three months ended March 31, 2016, Main Street recorded a one-time $1.8 million increase to deferred tax assets for previously unrecognized excess tax benefits associated with share-based compensation due to the early adoption of the new accounting standard ASU 2016-09 (See further discussion in Note B.8.). As of September 30, 2016, the Taxable Subsidiaries had a capital loss carryforward of $15.6 million. For federal income tax purposes, the capital loss carryforward will expire in taxable years 2020 and 2021. The timing and manner in which Main Street will utilize any net loss carryforwards in any year, or in total, may be limited in the future under the provisions of the Code.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE J—COMMON STOCK

During November 2015, Main Street commenced a program with selling agents through which it can sell shares of its common stock by means of at-the-market offerings from time to time (the "ATM Program"). During the nine months ended September 30, 2016, Main Street sold 1,996,793 shares of its common stock at a weighted-average price of $32.67 per share and raised $65.2 million of gross proceeds under the ATM Program. Net proceeds were $64.3 million after commissions to the selling agents on shares sold and offering costs. As of September 30, 2016, sales transactions representing 30,804 shares had not settled and are not included in shares issued and outstanding on the face of the consolidated balance sheet, but are included in the weighted average shares outstanding on the consolidated statement of operations and in the shares used to calculate net asset value per share. As of September 30, 2016, 362,639 shares were available for sale under the ATM Program.

During November and December 2015, Main Street sold 140,568 shares of its common stock at a weighted-average price of $31.98 per share and raised $4.5 million of gross proceeds under the ATM Program. Net proceeds were $4.3 million after commissions to the selling agents on shares sold and offering costs.

During March 2015, Main Street completed a follow-on public equity offering of 4,370,000 shares of common stock, including the underwriters' full exercise of their option to purchase 570,000 additional shares, resulting in total net proceeds, including exercise of the underwriters' option to purchase additional shares and after deducting underwriting discounts and estimated offering expenses payable by Main Street, of approximately $127.8 million.

NOTE K—DIVIDEND REINVESTMENT PLAN ("DRIP")

Main Street's DRIP provides for the reinvestment of dividends on behalf of its stockholders, unless a stockholder has elected to receive dividends in cash. As a result, if Main Street declares a cash dividend, the company's stockholders who have not "opted out" of the DRIP by the dividend record date will have their cash dividend automatically reinvested into additional shares of MSCC common stock. The share requirements of the DRIP may be satisfied through the issuance of shares of common stock or through open market purchases of common stock. Newly issued shares will be valued based upon the final closing price of MSCC's common stock on the valuation date determined for each dividend by Main Street's Board of Directors. Shares purchased in the open market to satisfy the DRIP requirements will be valued based upon the average price of the applicable shares purchased, before any associated brokerage or other costs. Main Street's DRIP is administered by its transfer agent on behalf of Main Street's record holders and participating brokerage firms. Brokerage firms and other financial intermediaries may decide not to participate in Main Street's DRIP but may provide a similar dividend reinvestment plan for their clients.

For the nine months ended September 30, 2016, $10.6 million of the total $97.3 million in dividends paid to stockholders represented DRIP participation. During this period, the DRIP participation requirements were satisfied with the issuance of 339,544 newly issued shares. For the nine months ended September 30, 2015, $13.7 million of the total $89.1 million in dividends paid to stockholders represented DRIP participation. During this period, the DRIP participation requirements were satisfied with the issuance of 444,957 newly issued shares and with the purchase of 3,131 shares of common stock in the open market. The shares disclosed above relate only to Main Street's DRIP and exclude any activity related to broker-managed dividend reinvestment plans.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE L—SHARE-BASED COMPENSATION

Main Street accounts for its share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—Stock Compensation . Accordingly, for restricted stock awards, Main Street measured the grant date fair value based upon the market price of its common stock on the date of the grant and amortizes the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

Main Street's Board of Directors approves the issuance of shares of restricted stock to Main Street employees pursuant to the Main Street Capital Corporation 2015 Equity and Incentive Plan (the "Equity and Incentive Plan"). These shares generally vest over a three-year period from the grant date. The fair value is expensed over the service period, starting on the grant date. The following table summarizes the restricted stock issuances approved by Main Street's Board of Directors under the Equity and Incentive Plan, net of shares forfeited, if any, and the remaining shares of restricted stock available for issuance as of September 30, 2016.


Restricted stock authorized under the plan	3,000,000
Less net restricted stock granted during:
Year ended December 31, 2015	(900	)
Nine months ended September 30, 2016	(260,514	)

Restricted stock available for issuance as of September 30, 2016	2,738,586

As of September 30, 2016, the following table summarizes the restricted stock issued to Main Street's non-employee directors and the remaining shares of restricted stock available for issuance pursuant to the Main Street Capital Corporation 2015 Non-Employee Director Restricted Stock Plan. These shares are granted upon appointment or election to the board and vest on the day immediately preceding the annual meeting of stockholders following the respective grant date and are expensed over such service period.


Restricted stock authorized under the plan	300,000
Less net restricted stock granted during:
Year ended December 31, 2015	(6,806	)
Nine months ended September 30, 2016	(6,748	)

Restricted stock available for issuance as of September 30, 2016	286,446

For the three months ended September 30, 2016 and 2015, Main Street recognized total share-based compensation expense of $2.1 million and $1.7 million, respectively, related to the restricted stock issued to Main Street employees and non-employee directors, and, for the nine months ended September 30, 2016 and 2015, Main Street recognized total share-based compensation expense of $6.0 million and $4.6 million, respectively, related to the restricted stock issued to Main Street employees and non-employee directors.

As of September 30, 2016, there was $14.4 million of total unrecognized compensation expense related to Main Street's non-vested restricted shares. This compensation expense is expected to be recognized over a remaining weighted-average period of approximately 2.0 years as of September 30, 2016.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE M—COMMITMENTS AND CONTINGENCIES

At September 30, 2016, Main Street had the following outstanding commitments (in thousands):

Category / Company	Amount

Investments with equity capital commitments that have not yet funded:
Encap Energy Fund Investments
EnCap Energy Capital Fund VIII, L.P.	$	686
EnCap Energy Capital Fund VIII Co-Investors, L.P.		96
EnCap Energy Capital Fund IX, L.P.		958
EnCap Energy Capital Fund X, L.P.		7,346
EnCap Flatrock Midstream Fund II, L.P.		5,589
EnCap Flatrock Midstream Fund III, L.P.		5,026

	$	19,701
Congruent Credit Opportunities Funds
Congruent Credit Opportunities Fund II, LP	$	8,488
Congruent Credit Opportunities Fund III, LP		14,246

	$	22,734
Freeport Fund Investments
Freeport First Lien Loan Fund III LP	$	8,936
Freeport Financial SBIC Fund LP		1,375

	$	10,311
I-45 SLF LLC	$	4,800
Dos Rios Partners
Dos Rios Partners, LP	$	2,353
Dos Rios Partners—A, LP		747

	$	3,100
Brightwood Capital Fund III, LP	$	3,750
EIG Fund Investments	$	2,334
LKCM Headwater Investments I, L.P.	$	2,500
Access Media Holdings, LLC	$	518

Total equity commitments	$	69,748
Investments with commitments to fund revolving loans that have not been fully drawn or term loans with additional commitments not yet funded:
UniRush, LLC	$	4,000
CapFusion, LLC		3,200
Barfly Ventures, LLC		2,756
Buca C, LLC		2,670
PT Network, LLC		2,621
Truck Bodies and Equipment International, Inc.		2,208

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

Category / Company	Amount

Hojeij Branded Foods, LLC		2,028
Applied Products, Inc.		2,000
Mid-Columbia Lumber Products, LLC		2,000
LaMi Products, LLC		1,765
Arcus Hunting LLC		1,396
Messenger, LLC		1,323
Gamber-Johnson Holdings, LLC		1,200
Grace Hill, LLC		1,025
NRI Clinical Research, LLC		1,000
Lamb's Venture, LLC		861
Apex Linen Service, Inc.		800
Minute Key, Inc.		800
Mystic Logistics, Inc.		800
Energy & Exploration Partners, LLC		663
Jackmont Hospitality, Inc.		593
Vision Interests, Inc.		525
Insurance Technologies, LLC		522
UniTek Global Services, Inc.		483
BBB Tank Services, LLC		464
HW Temps LLC		400
Subsea Global Solutions, LLC		285
AccuMED Corp.		250
Garreco, LLC		200
Jensen Jewelers of Idaho, LLC		200

Total loan commitments	$	39,038

Total commitments	$	108,786

Main Street will fund its unfunded commitments from the same sources it uses to fund its investment commitments that are funded at the time they are made (which are typically through existing cash and cash equivalents, the liquidation of Marketable securities and idle funds investments, and a combination of future debt and equity capital). Main Street follows a process to manage its liquidity and ensure that it has available capital to fund its unfunded commitments as necessary. The Company had total unrealized depreciation of $0.1 million on the outstanding unfunded commitments as of September 30, 2016.

Main Street may, from time to time, be involved in litigation arising out of its operations in the normal course of business or otherwise. Furthermore, third parties may try to impose liability on Main Street in connection with the activities of its portfolio companies. While the outcome of any current legal proceedings cannot at this time be predicted with certainty, Main Street does not expect any current matters will materially affect its financial condition or results of operations; however, there can be no assurance whether any pending legal proceedings will have a material adverse effect on Main Street's financial condition or results of operations in any future reporting period.

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Notes to Consolidated Financial Statements (Continued)

(Unaudited)

NOTE N—RELATED PARTY TRANSACTIONS

As discussed further in Note D, the External Investment Manager is treated as a wholly owned portfolio company of MSCC and is included as part of Main Street's Investment Portfolio. At September 30, 2016, Main Street had a receivable of approximately $2.2 million due from the External Investment Manager which included approximately $1.4 million related primarily to operating expenses incurred by MSCC or its subsidiaries required to support the External Investment Manager's business, along with dividends declared but not paid by the External Investment Manager of approximately $0.8 million.

In November 2015, Main Street's board of directors approved and adopted the Main Street Capital Corporation Deferred Compensation Plan (the "2015 Deferred Compensation Plan"). The 2015 Deferred Compensation Plan became effective on January 1, 2016 and replaced the Deferred Compensation Plan for Non-Employee Directors previously adopted by the board of directors in June 2013 (the "2013 Deferred Compensation Plan"). Under the 2015 Deferred Compensation Plan, non-employee directors and certain key employees may defer receipt of some or all of their cash compensation and directors' fees, subject to certain limitations. Individuals participating in the 2015 Deferred Compensation Plan receive distributions of their respective balances based on predetermined payout schedules or other events as defined by the plan and are also able to direct investments made on their behalf among investment alternatives permitted from time to time under the plan, including phantom Main Street stock units. As of September 30, 2016, $2.0 million of compensation and directors' fees had been deferred under the 2015 Deferred Compensation Plan (including amounts previously deferred under the 2013 Deferred Compensation Plan). Of this amount, $1.7 million was deferred into phantom Main Street stock units, representing 55,753 shares of Main Street's common stock. Including phantom stock units issued through dividend reinvestment, the phantom stock units outstanding as of September 30, 2016 represented 63,257 shares of Main Street's common stock. Any amounts deferred under the plan represented by phantom Main Street stock units will not be issued or included as outstanding on the consolidated statement of changes in net assets until such shares are actually distributed to the participant in accordance with the plan, but are included in operating expenses and weighted average shares outstanding on Main Street's consolidated statement of operations as earned.

NOTE O—SUBSEQUENT EVENTS

In October 2016, Main Street declared a semi-annual supplemental cash dividend of $0.275 per share payable in December 2016. This supplemental cash dividend is in addition to the previously announced regular monthly cash dividends that Main Street declared for the fourth quarter of 2016 of $0.185 per share for each of October, November and December 2016.

In November 2016, Main Street declared regular monthly dividends of $0.185 per share for each month of January, February and March of 2017. These regular monthly dividends equal a total of $0.555 per share for the first quarter of 2017 and represent a 2.8% increase from the regular monthly dividends declared for the first quarter of 2016. Including the semi-annual supplemental dividend declared for December 2016 and the regular monthly dividends declared for the first quarter of 2017, Main Street will have paid $19.160 per share in cumulative dividends since its October 2007 initial public offering.

In October 2016, Main Street amended its Credit Facility to extend the maturity by one year to September 2021. The Credit Facility includes total commitments of $555.0 million from a diversified group of fourteen lenders and also contains an accordion feature which allows Main Street to increase the total commitments under the facility to up to $750.0 million from new and existing lenders on the same terms and conditions as the existing commitments.

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Schedule 12-14

MAIN STREET CAPITAL CORPORATION

Consolidated Schedule of Investments In and Advances to Affiliates
Nine Months Ended September 30, 2016
(dollars in thousands)
(Unaudited)

Company	Investment(1)

Control Investments
*Majority-owned investments*
Café Brazil, LLC	Member Units	416		7,330	—	760	6,570

CMS Minerals LLC	Member Units	101		—	4,083	190	3,893
	Preferred Member Units	1,172		6,914	—	3,543	3,371

Gamber-Johnson Holdings, LLC	LIBOR Plus 11.00% (Floor 1.00%)	884		—	19,798	—	19,798
	Member Units	354		—	12,124	—	12,124

GRT Rubber Technologies LLC	LIBOR Plus 9.00% (Floor 1.00%)	1,118		15,988	134	2,638	13,484
	Member Units	335		15,580	2,450	—	18,030

Hydratec, Inc.	Common Stock	1,270		14,950	810	—	15,760

IDX Broker, LLC	12.5% Secured Debt	1,099		11,350	16	116	11,250
	Member Units	68		6,440	250	—	6,690

Jensen Jewelers of Idaho, LLC	Prime Plus 6.75% (Floor 2.00%)	359		4,055	522	372	4,205
	Member Units	159		4,750	—	100	4,650

Lamb's Venture, LLC	LIBOR Plus 5.75%	7		—	352	213	139
	11% Secured Debt	653		7,962	—	227	7,735
	Preferred Equity	—		328	72	—	400
	Member Units	50		4,690	1,190	—	5,880
	9.5% Secured Debt	65		919	—	37	882
	Member Units	45		1,240	380	—	1,620

Lighting Unlimited, LLC	8% Secured Debt	92		1,514	—	—	1,514
	Preferred Equity	—		430	—	—	430
	Warrants	—		40	—	30	10
	Member Units	(81	)	350	—	270	80

Mid-Columbia Lumber	10% Secured Debt	133		1,750	—	—	1,750
Products, LLC	12% Secured Debt	356		3,900	—	—	3,900
	Member Units	4		2,580	—	280	2,300
	9.5% Secured Debt	62		881	—	34	847
	Member Units	16		550	50	—	600

MSC Adviser I, LLC	Member Units	2,110		27,272	2,861	—	30,133

Mystic Logistics Holdings, LLC	12% Secured Debt	892		9,448	32	304	9,176
	Common Stock	—		5,970	—	820	5,150

NRP Jones, LLC	6% Current / 6% PIK Secured Debt	1,426		12,948	683	—	13,631
	Warrants	—		450	—	320	130
	Member Units	—		1,480	—	1,070	410

PPL RVs, Inc.	11.1% Secured Debt	820		9,710	—	—	9,710
	Common Stock	261		9,770	2,010	—	11,780

Principle Environmental, LLC	12% Secured Debt	392		4,060	21	21	4,060
	12% Current / 2% PIK Secured Debt	354		3,310	52	1	3,361
	Preferred Member Units	—		6,060	—	1,460	4,600
	Warrants	—		310	—	290	20

Quality Lease Service, LLC	8% PIK Secured Debt	392		6,538	391	—	6,929
	Member Units	—		2,638	250	—	2,888

Southern RV, LLC	13% Secured Debt	157		11,400	104	11,504	—
	Member Units	957		15,100	—	15,100	—
	13% Secured Debt	45		3,250	30	3,280	—
	Member Units	—		1,200	—	1,200	—

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Company	Investment(1)	Amount of Interest, Fees or Dividends Credited to Income(2)			Gross Additions(3)		Gross Reductions(4)		September 30, 2016 Fair Value

The MPI Group, LLC	9% Secured Debt		202	2,921		1		—		2,922
	Series A Preferred Units		—	690		—		330		360
	Warrants		—	—		—		—		—
	Member Units		95	2,230		70		—		2,300

Travis Acquisition LLC	12% Secured Debt		340	3,513		43		3,556		—
	Member Units		2,812	14,480		—		14,480		—

Uvalco Supply, LLC	9% Secured Debt		77	1,314		—		328		986
	Member Units		140	5,460		—		600		4,860

Vision Interests, Inc.	13% Secured Debt		312	3,052		15		182		2,885
	Series A Preferred Stock		—	3,550		—		180		3,370
	Common Stock		—	210		—		70		140

Ziegler's NYPD, LLC	6.5% Secured Debt		51	992		1		—		993
	12% Secured Debt		37	500		—		200		300
	14% Secured Debt		293	2,750		—		—		2,750
	Warrants		—	50		170		—		220
	Preferred Member Units		—	3,400		300		—		3,700

*Other controlled investments*
Access Media Holdings, LLC	5.00% Current / 5.00% PIK Secured Debt	$	1,689	20,380	$	826	$	1,486	$	19,720
	Preferred Member Units		—	2,000		1,732		3,482		250
	Member Units		—	—		—		—		—

AmeriTech College, LLC	10% Secured Debt		76	1,003		1		—		1,004
	10% Secured Debt		230	3,025		—		—		3,025
	Preferred Member Units		86	2,291		—		—		2,291

ASC Interests, LLC	11% Secured Debt		205	2,500		10		260		2,250
	Member Units		65	2,230		450		—		2,680

Bond-Coat, Inc.	12% Secured Debt		1,085	11,596		17		17		11,596
	Common Stock		—	9,140		—		4,050		5,090

CBT Nuggets, LLC	Member Units		6,225	42,120		10,680		—		52,800

Datacom, LLC	8% Secured Debt		33	—		900		—		900
	5.25% Current / 5.25% PIK Secured Debt		878	10,970		369		451		10,888
	Class A Preferred Member Units		—	1,181		137		—		1,318
	Class B Preferred Member Units		—	5,079		—		3,310		1,769

Garreco, LLC	14% Secured Debt		636	5,739		22		250		5,511
	Member Units		5	1,270		—		120		1,150

Gulf Manufacturing, LLC	9% PIK Secured Debt		53	777		—		—		777
	Member Units		—	13,770		—		5,000		8,770

Gulf Publishing Holdings, LLC	12.5% Secured Debt		645	—		9,907		—		9,907
	Member Units		62	—		3,124		—		3,124

Harrison Hydra-Gen, Ltd.	9% Secured Debt		9	5,010		—		5,010		—
	Preferred Stock		2	1,361		2		1,363		—
	Common Stock		137	2,600		740		—		3,340

Hawthorne Customs and	Member Units		—	460		—		180		280
Dispatch Services, LLC	Member Units		141	2,220		—		180		2,040

HW Temps LLC	LIBOR Plus 9.50% (Floor 1.00%)		814	9,884		412		—		10,296
	Preferred Member Units		354	3,942		418		—		4,360

Indianapolis Aviation	15% Secured Debt		417	3,100		5		5		3,100
Partners, LLC	Warrants		—	2,540		109		—		2,649

Marine Shelters Holdings, LLC	12% PIK Secured Debt		886	8,870		939		430		9,379
(LoneStar Marine Shelters)	Preferred Member Units		—	4,881		—		3,975		906

MH Corbin Holding LLC	10% Secured Debt		1,062	13,869		21		525		13,365
	Preferred Member Units		105	6,000		—		—		6,000

NAPCO Precast, LLC	Prime Plus 2.00% (Floor 7.00%)		219	4,005		—		1,292		2,713
	18% Secured Debt		609	4,924		—		972		3,952
	Member Units		645	8,590		2,080		—		10,670

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Company	Investment(1)	Amount of Interest, Fees or Dividends Credited to Income(2)		December 31, 2015 Fair Value		Gross Additions(3)		Gross Reductions(4)		September 30, 2016 Fair Value

NRI Clinical Research, LLC	14% Secured Debt		519		4,539		79		108		4,510
	Warrants		—		340		310		—		650
	Member Units		—		1,342		979		—		2,321

OMi Holdings, Inc.	Common Stock		—		13,640		750		—		14,390

Pegasus Research Group, LLC (Televerde)	Member Units		339		6,840		1,780		—		8,620

River Aggregates, LLC	Zero Coupon Secured Debt		52		556		53		—		609
	Member Units		345		3,830		770		—		4,600
	Member Units		—		2,360		150		—		2,510

SoftTouch Medical	LIBOR Plus 9.00% (Floor 1.00%)		606		8,010		65		850		7,225
Holdings LLC	Member Units		262		5,710		2,960		—		8,670

Other
Amounts related to investments transferred to or from other 1940 Act classification during the period			—		—		—		—		—

		$	40,398		555,011	$	90,062	$	97,422	$	547,651



Affiliate Investments
AFG Capital Group, LLC	11% Secured Debt	$	1,313	$	12,790	$	349	$	13,139	$	—
	Warrants		—		490		130		—		620
	Member Units		—		2,020		510		—		2,530

Barfly Ventures, LLC	12% Secured Debt		862		4,042		1,813		94		5,761
	Options		—		—		420		—		420
	Warrants		—		473		—		233		240

BBB Tank Services, LLC	LIBOR Plus 7.50% (Floor 1.00%)		6		—		332		—		332
	12% Current / 1% PIK Secured Debt		298		—		3,982		—		3,982
	Member Units		—		—		800		—		800

Boss Industries, LLC	Preferred Member Units		199		2,586		133		113		2,606

Bridge Capital Solutions	13% Secured Debt		984		6,890		5,660		7,000		5,550
Corporation	Warrants		—		1,300		2,012		—		3,312
	13% Secured Debt		40		—		990		—		990
	Preferred Member Units		19		—		1,000		—		1,000

Buca C, LLC	LIBOR Plus 7.25% (Floor 1.00%)		1,595		25,299		231		3,159		22,371
	Preferred Member Units		168		3,711		1,888		—		5,599

CAI Software LLC	12% Secured Debt		391		4,661		12		893		3,780
	Member Units		69		1,000		1,150		—		2,150

CapFusion, LLC	13% Secured Debt		1,003		—		11,566		—		11,566
	Warrants		—		—		1,200		—		1,200

Chandler Signs Holdings, LLC	12% Secured Debt		456		—		4,500		—		4,500
	Class A Units		82		—		2,950		—		2,950

Condit Exhibits, LLC	Member Units		130		1,010		770		—		1,780

Congruent Credit Opportunities	LP Interests (Fund II)		400		2,834		—		1,395		1,439
Funds	LP Interests (Fund III)		730		12,024		3,952		—		15,976

Daseke, Inc.	12% Current / 2.5% PIK Secured Debt		2,427		21,253		468		61		21,660
	Common Stock		—		22,660		—		1,020		21,640

Dos Rios Partners	LP Interests (Fund)		—		2,031		2,133		43		4,121
	LP Interests (Fund A)		—		648		677		134		1,191

Dos Rios Stone Products LLC	Class A Units		51		—		2,000		—		2,000

East Teak Fine Hardwoods, Inc.	Common Stock		37		860		—		—		860

East West Copolymer &	12% Secured Debt		949		9,463		71		—		9,534
Rubber, LLC	Warrants		—		50		—		—		50

EIG Fund Investments	LP Interests		225		718		2,070		—		2,788

EIG Traverse Co-Investment, L.P.	LP Interests		895		4,755		5,272		—		10,027

Freeport Financial Funds	LP Interests (Fund)		296		6,045		—		425		5,620
	LP Interests (Fund III)		357		2,077		1,487		—		3,564

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Company	Investment(1)

Gault Financial, LLC (RMB	10% Secured Debt	1,156		10,930		123	—	11,053
Capital, LLC)	Warrants	—		—		—	—	—

Glowpoint, Inc.	8% Secured Debt	17		397		1	398	—
	12% Secured Debt	843		8,929		17	2,307	6,639
	Common Stock	—		3,840		—	1,680	2,160

Guerdon Modular Holdings, Inc.	LIBOR Plus 8.50% (Floor 1.00%)	20		(15	)	975	960	—
	9% Current / 4% PIK Secured Debt	1,080		10,295		181	—	10,476
	Preferred Stock	—		—		1,140	—	1,140
	Common Stock	—		1,990		—	1,910	80

Houston Plating and Coatings, LLC	Member Units	(23	)	8,440		433	4,493	4,380

I-45 SLF LLC	Member units	1,196		7,200		5,386	—	12,586

Indianhead Pipeline	12% Secured Debt	609		5,853		95	675	5,273
Services, LLC	Preferred Member Units	31		2,302		368	—	2,670
	Warrants	—		—		—	—	—
	Member Units	—		—		—	—	—

KBK Industries, LLC	10% Secured Debt	23		—		1,000	300	700
	12.5% Secured Debt	572		5,900		11	25	5,886
	Member Units	(8	)	3,680		—	590	3,090

L.F. Manufacturing Holdings, LLC	Member Units	—		1,485		—	105	1,380

MPS Denver, LLC	Member Units	—		1,130		124	1,254	—

OnAsset Intelligence, Inc.	12% PIK Secured Debt	378		4,006		378	—	4,384
	Preferred Stock	—		1,380		—	1,380	—
	Warrants	—		—		—	—	—

OPI International Ltd.	10% Unsecured Debt	36		473		—	—	473
	Common Stock	—		3,200		—	—	3,200

PCI Holding Company, Inc.	12% Secured Debt	946		—		13,000	—	13,000
	Preferred Stock	450		4,887		450	297	5,040

Radial Drilling Services Inc.	12% Secured Debt	20		1,500		2,461	3,961	—
	Warrants	—		—		758	758	—

Rocaceia, LLC (Quality Lease	12% Secured Debt	—		250		—	—	250
and Rental Holdings, LLC)	Preferred Member Units	—		—		—	—	—

Samba Holdings, Inc.	12.5% Secured Debt	1,100		24,662		110	24,772	—
	Common Stock	—		30,220		—	30,220	—

Tin Roof Acquisition Company	12% Secured Debt	1,304		13,807		45	313	13,539
	Class C Preferred Stock	193		2,477		193	—	2,670

UniTek Global Services, Inc.	LIBOR Plus 7.50% (Floor 1.00%)	192		2,812		1	—	2,813
	LIBOR Plus 8.50% (Floor 1.00%)	86		1,255		7	447	815
	15% PIK Unsecured Debt	82		638		76	—	714
	Preferred Stock	495		5,540		660	—	6,200
	Common Stock	—		—		2,580	—	2,580

Universal Wellhead Services Holdings, LLC	Class A Preferred Units	—		3,000		—	1,840	1,160

Valley Healthcare Group, LLC	LIBOR Plus 12.50% (Floor 0.50%)	1,069		10,297		425	100	10,622
	Preferred Member Units	—		—		1,600	—	1,600

Volusion, LLC	10.5% Secured Debt	1,591		16,199		192	—	16,391
	Preferred Member Units	—		14,000		—	—	14,000
	Warrants	—		1,400		—	—	1,400

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Company	Amount of Interest, Fees or Dividends Credited to Income(2)			December 31, 2015 Fair Value			Gross Additions(3)		Gross Reductions(4)		September 30, 2016 Fair Value

Other
Amounts related to investments transferred to or from other 1940 Act classification during the period		(345	)		(15,530	)		—		—		—

	$	27,095		$	350,519		$	93,318	$	106,494	$	352,873

This schedule should be read in conjunction with Main Street's consolidated financial statements, including the consolidated schedule of investments and notes to the consolidated financial statements.

(1): The principal amount, the ownership detail for equity investments and if the investment is income producing is included in the consolidated schedule of investments.
(2): Represents the total amount of interest, fees and dividends credited to income for the portion of the period for which an investment was included in Control or Affiliate categories, respectively. For investments transferred between Control and Affiliate categories during the period, any income related to the time period it was in the category other than the one shown at period-end is included in "Amounts from investments transferred from other 1940 Act classifications during the period".
(3): Gross additions include increases in the cost basis of investments resulting from new portfolio investments, follow-on investments and accrued PIK interest, and the exchange of one or more existing securities for one or more new securities. Gross additions also include net increases in unrealized appreciation or net decreases in net unrealized depreciation as well as the movement of an existing portfolio company into this category and out of a different category.
(4): Gross reductions include decreases in the cost basis of investments resulting from principal repayments or sales and the exchange of one or more existing securities for one or more new securities. Gross reductions also include net increases in net unrealized depreciation or net decreases in unrealized appreciation as well as the movement of an existing portfolio company out of this category and into a different category.

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Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The information in this section contains forward-looking statements that involve risks and uncertainties. Please see "Risk Factors" and "Cautionary Statement Concerning Forward-Looking Statements" in our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission (the "SEC") on February 26, 2016, for a discussion of the uncertainties, risks and assumptions associated with these statements. You should read the following discussion in conjunction with the consolidated financial statements and related notes and other financial information included in the Annual Report on Form 10-K for the year ended December 31, 2015.

ORGANIZATION

MSC Adviser I, LLC (the "External Investment Manager") was formed in November 2013 as a wholly owned subsidiary of MSCC to provide investment management and other services to parties other than MSCC and its subsidiaries or their portfolio companies ("External Parties") and receive fee income for such services. MSCC has been granted no-action relief by the Securities and Exchange Commission ("SEC") to allow the External Investment Manager to register as a registered investment adviser ("RIA") under Investment Advisers Act of 1940, as amended (the "Advisers Act"). Since the External Investment Manager conducts all of its investment management activities for External Parties, it is accounted for as a portfolio investment of MSCC and is not included as a consolidated subsidiary of MSCC in MSCC's consolidated financial statements.

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be a taxable entity. The Taxable Subsidiaries and the External Investment Manager are each taxed at their normal corporate tax rates based on their taxable income.

OVERVIEW

Our principal investment objective is to maximize our portfolio's total return by generating current income from our debt investments and capital appreciation from our equity and equity related investments, including warrants, convertible securities and other rights to acquire equity securities in a portfolio company. Our LMM companies generally have annual revenues between $10 million and $150 million, and our LMM portfolio investments generally range in size from $5 million to $50 million. Our Middle Market investments are made in businesses that are generally larger in size than our LMM portfolio companies, with annual revenues typically between $150 million and $1.5 billion, and our Middle Market investments generally range in size from $3 million to $15 million. Our private loan ("Private Loan") portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis. Private Loan investments are typically similar in size, structure, terms and conditions to investments we hold in our LMM portfolio and Middle Market portfolio.

We seek to fill the financing gap for LMM businesses, which, historically, have had more limited access to financing from commercial banks and other traditional sources. The underserved nature of the LMM creates the opportunity for us to meet the financing needs of LMM companies while also negotiating favorable transaction terms and equity participations. Our ability to invest across a company's capital structure, from secured loans to equity securities, allows us to offer portfolio companies a comprehensive suite of financing options, or a "one stop" financing solution. Providing customized, "one stop" financing solutions is important to LMM portfolio companies. We generally seek to partner directly with entrepreneurs, management teams and business owners in making our investments. Our LMM portfolio debt investments are generally secured by a first lien on the assets of the portfolio company and typically have a term of between five and seven years from the original investment date.

Our Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest bearing debt securities in privately held companies that are generally larger in size than the companies included in our LMM portfolio. Our Middle Market portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have an expected duration of between three and seven years from the original investment date.

Our Private Loan portfolio investments are primarily debt securities in privately held companies which have been originated through strategic relationships with other investment funds on a collaborative basis, and are often referred to in the debt markets as "club deals." Private Loan investments are typically similar in size, structure, terms and conditions to investments we hold in our LMM portfolio and Middle Market portfolio. Our Private Loan portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

Our other portfolio ("Other Portfolio") investments primarily consist of investments which are not consistent with the typical profiles for our LMM, Middle Market or Private Loan portfolio investments, including investments which may be managed by third parties. In our Other Portfolio, we may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds.

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The following tables provide a summary of our investments in the LMM, Middle Market and Private Loan portfolios as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager which are discussed further below):

	As of September 30, 2016

	LMM(a)		Middle Market		Private Loan
	(dollars in millions)
Number of portfolio companies		71		81		45
Fair value	$	829.7	$	627.9	$	337.7
Cost	$	703.6	$	658.0	$	353.8
% of portfolio at cost—debt		68.8%		97.5%		94.3%
% of portfolio at cost—equity		31.2%		2.5%		5.7%
% of debt investments at cost secured by first priority lien		91.5%		87.6%		87.6%
Weighted-average annual effective yield(b)		12.5%		8.4%		9.6%
Average EBITDA(c)	$	6.2	$	101.6	$	21.1

(a): At September 30, 2016, we had equity ownership in approximately 99% of our LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 36%.
(b): The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of September 30, 2016, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of our common stock will realize on its investment because it does not reflect our expenses or any sales load paid by an investor.
(c): The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including five LMM portfolio companies, three Middle Market portfolio companies and three Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for our investments in these portfolio companies.

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	As of December 31, 2015

	LMM(a)		Middle Market		Private Loan
	(dollars in millions)
Number of portfolio companies		71		86		40
Fair value	$	862.7	$	586.9	$	248.3
Cost	$	685.6	$	637.2	$	268.6
% of total investments at cost—debt		70.4%		98.3%		94.3%
% of total investments at cost—equity		29.6%		1.7%		5.7%
% of debt investments at cost secured by first priority lien		91.8%		86.6%		87.3%
Weighted-average annual effective yield(b)		12.2%		8.0%		9.5%
Average EBITDA(c)	$	6.0	$	98.8	$	13.1

(a): At December 31, 2015, we had equity ownership in approximately 96% of our LMM portfolio companies, and the average fully diluted equity ownership in those portfolio companies was approximately 36%.
(b): The weighted-average annual effective yields were computed using the effective interest rates for all debt investments at cost as of December 31, 2015, including amortization of deferred debt origination fees and accretion of original issue discount but excluding fees payable upon repayment of the debt instruments and any debt investments on non-accrual status. Weighted-average annual effective yield is higher than what an investor in shares of our common stock will realize on its investment because it does not reflect our expenses or any sales load paid by an investor.
(c): The average EBITDA is calculated using a simple average for the LMM portfolio and a weighted average for the Middle Market and Private Loan portfolios. These calculations exclude certain portfolio companies, including five LMM portfolio companies, three Middle Market portfolio companies and six Private Loan portfolio companies, as EBITDA is not a meaningful valuation metric for our investments in these portfolio companies, and those portfolio companies whose primary purpose is to own real estate.

As of September 30, 2016, we had Other Portfolio investments in ten companies, collectively totaling approximately $94.8 million in fair value and approximately $101.3 million in cost basis and which comprised 4.9% of our Investment Portfolio (as defined in "—Critical Accounting Policies—Basis of Presentation" below) at fair value. As of December 31, 2015, we had Other Portfolio investments in ten companies, collectively totaling approximately $74.8 million in fair value and approximately $75.2 million in cost basis and which comprised approximately 4.2% of our Investment Portfolio at fair value.

As previously discussed, the External Investment Manager is a wholly owned subsidiary that is treated as a portfolio investment. As of September 30, 2016, there was no cost basis in this investment and the investment had a fair value of $30.1 million, which comprised 1.6% of our Investment Portfolio at fair value. As of December 31, 2015, there was no cost basis in this investment and the investment had a fair value of $27.3 million, which comprised 1.5% of our Investment Portfolio at fair value.

Our portfolio investments are generally made through MSCC and the Funds. MSCC and the Funds share the same investment strategies and criteria, although they are subject to different regulatory regimes. An investor's return in MSCC will depend, in part, on the Funds' investment returns as they are wholly owned subsidiaries of MSCC.

The level of new portfolio investment activity will fluctuate from period to period based upon our view of the current economic fundamentals, our ability to identify new investment opportunities that

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meet our investment criteria, and our ability to consummate the identified opportunities. The level of new investment activity, and associated interest and fee income, will directly impact future investment income. In addition, the level of dividends paid by portfolio companies and the portion of our portfolio debt investments on non-accrual status will directly impact future investment income. While we intend to grow our portfolio and our investment income over the long term, our growth and our operating results may be more limited during depressed economic periods. However, we intend to appropriately manage our cost structure and liquidity position based on applicable economic conditions and our investment outlook. The level of realized gains or losses and unrealized appreciation or depreciation on our investments will also fluctuate depending upon portfolio activity, economic conditions and the performance of our individual portfolio companies. The changes in realized gains and losses and unrealized appreciation or depreciation could have a material impact on our operating results.

Because we are internally managed, we do not pay any external investment advisory fees, but instead directly incur the operating costs associated with employing investment and portfolio management professionals. We believe that our internally managed structure provides us with a beneficial operating expense structure when compared to other publicly traded and privately held investment firms which are externally managed, and our internally managed structure allows us the opportunity to leverage our non-interest operating expenses as we grow our Investment Portfolio. For the three months ended September 30, 2016, the ratio of our total operating expenses, excluding interest expense, as a percentage of our quarterly average total assets was 1.5% on an annualized basis, compared to 1.3% on an annualized basis for the three months ended September 30, 2015. For the nine months ended September 30, 2016, the ratio of our total operating expenses, excluding interest expense, as a percentage of our quarterly average total assets was 1.4% on an annualized basis, which is consistent with the ratio on an annualized basis for the nine months ended September 30, 2015 and for the year ended December 31, 2015.

During May 2012, we entered into an investment sub-advisory agreement with HMS Adviser, LP ("HMS Adviser"), which is the investment advisor to HMS Income, a non-publicly traded BDC, to provide certain investment advisory services to HMS Adviser. In December 2013, after obtaining required no-action relief from the SEC to allow us to own a registered investment adviser, we assigned the sub-advisory agreement to the External Investment Manager since the fees received from such arrangement could otherwise have negative consequences on our ability to meet the source-of-income requirement necessary for us to maintain our RIC tax treatment. Under the investment sub-advisory agreement, the External Investment Manager is entitled to 50% of the base management fee and the incentive fees earned by HMS Adviser under its advisory agreement with HMS Income. Based upon several fee waiver agreements with HMS Income and HMS Adviser, the External Investment Manager did not begin accruing the base management fee and incentive fees, if any, until January 1, 2014. The External Investment Manager has conditionally agreed to waive a limited amount of the incentive fees otherwise earned. During the three months ended September 30, 2016 and 2015, the External Investment Manager earned $2.5 million and $2.1 million, respectively, of management fees (net of fees waived, if any) under the sub-advisory agreement with HMS Adviser. During the nine months ended September 30, 2016 and 2015, the External Investment Manager earned $7.1 million and $5.5 million, respectively, of management fees (net of fees waived, if any) under the sub-advisory agreement with HMS Adviser.

During April 2014, we received an exemptive order from the SEC permitting co-investments by us and HMS Income in certain negotiated transactions where co-investing would otherwise be prohibited under the 1940 Act. We have made, and in the future intend to continue to make, such co-investments with HMS Income in accordance with the conditions of the order. The order requires, among other things, that we and the External Investment Manager consider whether each such investment opportunity is appropriate for HMS Income and, if it is appropriate, to propose an allocation of the investment opportunity between us and HMS Income. Because the External Investment Manager may

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receive performance-based fee compensation from HMS Income, this may provide it an incentive to allocate opportunities to HMS Income instead of us. However, both we and the External Investment Manager have policies and procedures in place to manage this conflict.

CRITICAL ACCOUNTING POLICIES

Basis of Presentation

Our financial statements are prepared in accordance with generally accepted accounting principles in the United States of America ("U.S. GAAP"). For each of the periods presented herein, our consolidated financial statements include the accounts of MSCC and its consolidated subsidiaries. The Investment Portfolio, as used herein, refers to all of our investments in LMM portfolio companies, investments in Middle Market portfolio companies, Private Loan portfolio investments, Other Portfolio investments, and the investment in the External Investment Manager, but excludes all "Marketable securities and idle funds investments". "Marketable securities and idle funds investments" are classified as financial instruments and are reported separately on our consolidated balance sheets and consolidated schedules of investments due to the nature of such investments. Our results of operations for the three and nine months ended September 30, 2016 and 2015, cash flows for the nine months ended September 30, 2016 and 2015, and financial position as of September 30, 2016 and December 31, 2015, are presented on a consolidated basis. The effects of all intercompany transactions between us and our consolidated subsidiaries have been eliminated in consolidation.

Our accompanying unaudited consolidated financial statements are presented in conformity with U.S. GAAP for interim financial information and pursuant to the requirements for reporting on Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain disclosures accompanying annual financial statements prepared in accordance with U.S. GAAP are omitted. In the opinion of management, the unaudited consolidated financial results included herein contain all adjustments, consisting solely of normal recurring accruals, considered necessary for the fair presentation of financial statements for the interim periods included herein. The results of operations for the three and nine months ended September 30, 2016 and 2015 are not necessarily indicative of the operating results to be expected for the full year. Also, the unaudited financial statements and notes should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2015. Financial statements prepared on a U.S. GAAP basis require management to make estimates and assumptions that affect the amounts and disclosures reported in the financial statements and accompanying notes. Such estimates and assumptions could change in the future as more information becomes known, which could impact the amounts reported and disclosed herein.

Under regulations pursuant to Article 6 of Regulation S-X applicable to BDCs and Accounting Standards Codification ("Codification" or "ASC") 946, Financial Services—Investment Companies ("ASC 946"), we are precluded from consolidating other entities in which we have equity investments, including those in which we have a controlling interest, unless the other entity is another investment company. An exception to this general principle in ASC 946 occurs if we hold a controlling interest in an operating company that provides all or substantially all of its services directly to us or to any of our portfolio companies. Accordingly, as noted above, our consolidated financial statements include the financial position and operating results for the Funds and the Taxable Subsidiaries. Our consolidated financial statements also include the financial position and operating results for our wholly owned operating subsidiary, Main Street Capital Partners, LLC, ("MSCP"), as the wholly owned subsidiary provides all of its services directly or indirectly to Main Street or our portfolio companies. We have determined that all of our portfolio investments do not qualify for this exception, including the investment in the External Investment Manager. Therefore, our Investment Portfolio is carried on the consolidated balance sheet at fair value with any adjustments to fair value recognized as "Net Change in Unrealized Appreciation (Depreciation)" on the consolidated statements of operations until the

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investment is realized, usually upon exit, resulting in any gain or loss being recognized as a "Net Realized Gain (Loss)."

Investment Portfolio Valuation

The most significant determination inherent in the preparation of our consolidated financial statements is the valuation of our Investment Portfolio and the related amounts of unrealized appreciation and depreciation. As of both September 30, 2016 and December 31, 2015, our Investment Portfolio valued at fair value represented approximately 96% of our total assets. We are required to report our investments at fair value. We follow the provisions of FASB ASC 820, Fair Value Measurements and Disclosures ("ASC 820"). ASC 820 defines fair value, establishes a framework for measuring fair value, establishes a fair value hierarchy based on the quality of inputs used to measure fair value, and enhances disclosure requirements for fair value measurements. ASC 820 requires us to assume that the portfolio investment is to be sold in the principal market to independent market participants, which may be a hypothetical market. Market participants are defined as buyers and sellers in the principal market that are independent, knowledgeable and willing and able to transact. See "Note B.1.—Valuation of the Investment Portfolio" in the notes to consolidated financial statements for a detailed discussion of our investment portfolio valuation process and procedures.

Due to the inherent uncertainty in the valuation process, our determination of fair value for our Investment Portfolio may differ materially from the values that would have been determined had a ready market for the securities existed. In addition, changes in the market environment, portfolio company performance and other events that may occur over the lives of the investments may cause the gains or losses ultimately realized on these investments to be materially different than the valuations currently assigned. We determine the fair value of each individual investment and record changes in fair value as unrealized appreciation or depreciation.

Our Board of Directors has the final responsibility for overseeing, reviewing and approving, in good faith, our determination of the fair value for our Investment Portfolio and our valuation procedures, consistent with 1940 Act requirements. We believe our Investment Portfolio as of September 30, 2016 and December 31, 2015 approximates fair value as of those dates based on the markets in which we operate and other conditions in existence on those reporting dates.

Revenue Recognition

Interest and Dividend Income

We record interest and dividend income on the accrual basis to the extent amounts are expected to be collected. Dividend income is recorded as dividends are declared by the portfolio company or at the point an obligation exists for the portfolio company to make a distribution. In accordance with our valuation policies, we evaluate accrued interest and dividend income periodically for collectability. When a loan or debt security becomes 90 days or more past due, and if we otherwise do not expect the debtor to be able to service all of its debt or other obligations, we will generally place the loan or debt security on non-accrual status and cease recognizing interest income on that loan or debt security until the borrower has demonstrated the ability and intent to pay contractual amounts due. If a loan or debt security's status significantly improves regarding the debtor's ability to service the debt or other obligations, or if a loan or debt security is fully impaired, sold or written off, we remove it from non-accrual status.

Fee Income

We may periodically provide services, including structuring and advisory services, to our portfolio companies or other third parties. For services that are separately identifiable and evidence exists to substantiate fair value, fee income is recognized as earned, which is generally when the investment or

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other applicable transaction closes. Fees received in connection with debt financing transactions for services that do not meet these criteria are treated as debt origination fees and are deferred and accreted into interest income over the life of the financing.

Payment-in-Kind ("PIK") Interest and Cumulative Dividends

We hold certain debt and preferred equity instruments in our Investment Portfolio that contain PIK interest and cumulative dividend provisions. The PIK interest, computed at the contractual rate specified in each debt agreement, is periodically added to the principal balance of the debt and is recorded as interest income. Thus, the actual collection of this interest may be deferred until the time of debt principal repayment. Cumulative dividends are recorded as dividend income, and any dividends in arrears are added to the balance of the preferred equity investment. The actual collection of these dividends in arrears may be deferred until such time as the preferred equity is redeemed or sold. To maintain RIC tax treatment (as discussed below), these non-cash sources of income may need to be paid out to stockholders in the form of distributions, even though we may not have collected the PIK interest and cumulative dividends in cash. We stop accruing PIK interest and cumulative dividends and write off any accrued and uncollected interest and dividends in arrears when we determine that such PIK interest and dividends in arrears are no longer collectible. For the three months ended September 30, 2016 and 2015, (i) approximately 4.0% and 2.2%, respectively, of our total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 1.8% and 1.2%, respectively, of our total investment income was attributable to cumulative dividend income not paid currently in cash. For the nine months ended September 30, 2016 and 2015, (i) approximately 3.7% and 2.1%, respectively, of our total investment income was attributable to PIK interest income not paid currently in cash and (ii) approximately 1.1% and 1.0%, respectively, of our total investment income was attributable to cumulative dividend income not paid currently in cash.

Share-Based Compensation

We account for our share-based compensation plans using the fair value method, as prescribed by ASC 718, Compensation—Stock Compensation . Accordingly, for restricted stock awards, we measure the grant date fair value based upon the market price of our common stock on the date of the grant and amortize the fair value of the awards as share-based compensation expense over the requisite service period, which is generally the vesting term.

Income Taxes

MSCC has elected to be treated for U.S. federal income tax purposes as a RIC. MSCC's taxable income includes the taxable income generated by MSCC and certain of its subsidiaries, including the Funds, which are treated as disregarded entities for tax purposes. As a RIC, MSCC generally will not pay corporate-level U.S. federal income taxes on any net ordinary income or capital gains that MSCC distributes to its stockholders. MSCC must generally distribute at least 90% of its "investment company taxable income" (which is generally its net ordinary taxable income and realized net short-term capital gains in excess of realized net long-term capital losses) and 90% of its tax exempt income to maintain its RIC status (pass-through tax treatment for amounts distributed). As part of maintaining RIC status, undistributed taxable income (subject to a 4% non-deductible U.S Federal excise tax) pertaining to a given fiscal year may be distributed up to 12 months subsequent to the end of that fiscal year, provided such dividends are declared on or prior to the later of (i) filing of the U.S federal income tax return for the applicable fiscal year or (ii) the fifteenth day of the ninth month following the close of the year in which such taxable income was generated.

The Taxable Subsidiaries hold certain portfolio investments for us. The Taxable Subsidiaries permit us to hold equity investments in portfolio companies which are "pass-through" entities for tax purposes and to continue to comply with the "source-income" requirements contained in the RIC tax provisions

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of the Code. The Taxable Subsidiaries are consolidated with us for U.S. GAAP financial reporting purposes, and the portfolio investments held by the Taxable Subsidiaries are included in our consolidated financial statements as portfolio investments and recorded at fair value. The Taxable Subsidiaries are not consolidated with MSCC for income tax purposes and may generate income tax expense, or benefit, and tax assets and liabilities, as a result of their ownership of certain portfolio investments. The taxable income, or loss, of the Taxable Subsidiaries may differ from their book income, or loss, due to temporary book and tax timing differences and permanent differences. This income tax expense, or benefit, if any, and the related tax assets and liabilities, are reflected in our consolidated financial statements.

MSCP is included in our consolidated financial statements for financial reporting purposes. For tax purposes, MSCP has elected to be treated as a taxable entity, and therefore is not consolidated with MSCC for income tax purposes and is taxed at normal corporate tax rates based on its taxable income and, as a result of its activities, may generate income tax expense or benefit. The taxable income, or loss, of MSCP may differ from its book income, or loss, due to temporary book and tax timing differences and permanent differences. This income tax expense, or benefit, if any, and the related tax assets and liabilities, are reflected in our consolidated financial statements.

The Taxable Subsidiaries and MSCP use the liability method in accounting for income taxes. Deferred tax assets and liabilities are recorded for temporary differences between the tax basis of assets and liabilities and their reported amounts in the financial statements, using statutory tax rates in effect for the year in which the temporary differences are expected to reverse. A valuation allowance is provided against deferred tax assets when it is more likely than not that some portion or all of the deferred tax asset will not be realized.

INVESTMENT PORTFOLIO COMPOSITION

Our LMM portfolio investments primarily consist of secured debt, equity warrants and direct equity investments in privately held, LMM companies based in the United States. Our LMM portfolio companies generally have annual revenues between $10 million and $150 million, and our LMM investments generally range in size from $5 million to $50 million. The LMM debt investments are typically secured by either a first or second priority lien on the assets of the portfolio company, generally bear interest at fixed rates, and generally have a term of between five and seven years from the original investment date. In most LMM portfolio companies, we receive nominally priced equity warrants and/or make direct equity investments in connection with a debt investment.

Our Middle Market portfolio investments primarily consist of direct investments in or secondary purchases of interest-bearing debt securities in privately held companies based in the United States that are generally larger in size than the companies included in our LMM portfolio. Our Middle Market portfolio companies generally have annual revenues between $150 million and $1.5 billion, and our Middle Market investments generally range in size from $3 million to $15 million. Our Middle Market portfolio debt investments are generally secured by either a first or second priority lien on the assets of the portfolio company and typically have a term of between three and seven years from the original investment date.

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Our Other Portfolio investments primarily consist of investments which are not consistent with the typical profiles for LMM, Middle Market and Private Loan portfolio investments, including investments which may be managed by third parties. In the Other Portfolio, we may incur indirect fees and expenses in connection with investments managed by third parties, such as investments in other investment companies or private funds.

Our external asset management business is conducted through the External Investment Manager. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. We have entered into an agreement with the External Investment Manager to share employees in connection with its asset management business generally, and specifically for its relationship with HMS Income. Through this agreement, we share employees with the External Investment Manager, including their related infrastructure, business relationships, management expertise and capital raising capabilities. In the first quarter of 2014, we began allocating costs to the External Investment Manager pursuant to the sharing agreement. Our total expenses for the three months ended September 30, 2016 and 2015 are net of expenses allocated to the External Investment Manager of $1.2 million and $1.1 million, respectively. Our total expenses for the nine months ended September 30, 2016 and 2015 are net of expenses allocated to the External Investment Manager of $3.7 million and $3.1 million, respectively. The External Investment Manager earns management fees based on the assets of the funds under management and may earn incentive fees, or a carried interest, based on the performance of the funds managed. The total contribution of the External Investment Manager to our net investment income consists of the combination of the expenses allocated to the External Investment Manager and dividend income from the External Investment Manager. For the three months ended September 30, 2016 and 2015, the total contribution to our net investment income was $2.0 million and $1.8 million, respectively. For the nine months ended September 30, 2016 and 2015, the total contribution to our net investment income was $5.8 million and $4.7 million, respectively.

The following tables summarize the composition of our total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments at cost and fair value by type of investment as a percentage of the total combined LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments as of September 30, 2016 and December 31, 2015 (this information excludes the Other Portfolio investments and the External Investment Manager).

Cost:

First lien debt	75.6%	75.8%
Equity	13.9%	13.5%
Second lien debt	8.5%	8.7%
Equity warrants	1.0%	0.9%
Other	1.0%	1.1%

	100.0%	100.0%

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Fair Value:

First lien debt	68.3%	66.1%
Equity	22.0%	24.9%
Second lien debt	8.0%	7.7%
Equity warrants	0.8%	0.6%
Other	0.9%	0.7%

	100.0%	100.0%

Our LMM portfolio investments, Middle Market portfolio investments and Private Loan portfolio investments carry a number of risks including: (1) investing in companies which may have limited operating histories and financial resources; (2) holding investments that generally are not publicly traded and which may be subject to legal and other restrictions on resale; and (3) other risks common to investing in below investment grade debt and equity investments in our Investment Portfolio. Please see "Risk Factors—Risks Related to Our Investments" contained in our Form 10-K for the fiscal year ended December 31, 2015 and "Risk Factors" below for a more complete discussion of the risks involved with investing in our Investment Portfolio.

PORTFOLIO ASSET QUALITY

We utilize an internally developed investment rating system to rate the performance of each LMM portfolio company and to monitor our expected level of returns on each of our LMM investments in relation to our expectations for the portfolio company. The investment rating system takes into consideration various factors, including each investment's expected level of returns, the collectability of our debt investments and the ability to receive a return of the invested capital in our equity investments, comparisons to competitors and other industry participants, the portfolio company's future outlook and other factors that are deemed to be significant to the portfolio company.

•: Investment Rating 1 represents a LMM portfolio company that is performing in a manner which significantly exceeds expectations.
•: Investment Rating 2 represents a LMM portfolio company that, in general, is performing above expectations.
•: Investment Rating 3 represents a LMM portfolio company that is generally performing in accordance with expectations.
•: Investment Rating 4 represents a LMM portfolio company that is underperforming expectations. Investments with such a rating require increased monitoring and scrutiny by us.
•: Investment Rating 5 represents a LMM portfolio company that is significantly underperforming. Investments with such a rating require heightened levels of monitoring and scrutiny by us and involve the recognition of significant unrealized depreciation on such investment.

All new LMM portfolio investments receive an initial Investment Rating of 3.

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The following table shows the distribution of our LMM portfolio investments on the 1 to 5 investment rating scale at fair value as of September 30, 2016 and December 31, 2015:

	As of September 30, 2016				As of December 31, 2015

Investment Rating	Investments at Fair Value		Percentage of Total Portfolio		Investments at Fair Value		Percentage of Total Portfolio
			(dollars in thousands)
1	$	247,888		29.8%	$	332,606		38.6%
2		192,089		23.2%		143,268		16.6%
3		294,020		35.4%		277,160		32.1%
4		91,061		11.0%		107,926		12.5%
5		4,634		0.6%		1,750		0.2%

Total	$	829,692		100.0%	$	862,710		100.0%

Based upon our investment rating system, the weighted-average rating of our LMM portfolio was approximately 2.3 as of September 30, 2016 and 2.2 as of December 31, 2015.

As of September 30, 2016, our total Investment Portfolio had five investments on non-accrual status, which comprised approximately 0.4% of its fair value and 2.8% of its cost. As of December 31, 2015, our total Investment Portfolio had six investments on non-accrual status, which comprised approximately 0.4% of its fair value and 3.7% of its cost.

The operating results of our portfolio companies are impacted by changes in the broader fundamentals of the United States economy. In the event that the United States economy contracts, it is likely that the financial results of small-to mid-sized companies, like those in which we invest, could experience deterioration or limited growth from current levels, which could ultimately lead to difficulty in meeting their debt service requirements and to an increase in defaults on our debt investments and to difficulty in maintaining historical dividend payment rates on our equity investments. Consequently, we can provide no assurance that the performance of certain portfolio companies will not be negatively impacted by economic cycles or other conditions, which could also have a negative impact on our future results.

DISCUSSION AND ANALYSIS OF RESULTS OF OPERATIONS

Comparison of the three months ended September 30, 2016 and September 30, 2015

	Three Months Ended September 30,						Net Change

	2016			2015			Amount			%
	(dollars in thousands)
Total investment income	$	46,599		$	42,608		$	3,991			9%
Total expenses		(16,042	)		(14,747	)		(1,295	)		9%

Net investment income		30,557			27,861			2,696			10%
Net realized gain (loss) from investments		4,286			(1,343	)		5,629
Net change in net unrealized appreciation (depreciation) from:
Portfolio investments		8,376			(8,389	)		16,765
SBIC debentures and marketable securities and idle funds		(566	)		(698	)		132

Total net change in net unrealized appreciation (depreciation)		7,810			(9,087	)		16,897
Income tax benefit		528			3,237			(2,709	)

Net increase in net assets resulting from operations	$	43,181		$	20,668		$	22,513			109%

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	Three Months Ended September 30,				Net Change

	2016		2015		Amount		%
	(dollars in thousands, except per share amounts)
Net investment income	$	30,557	$	27,861	$	2,696		10%
Share-based compensation expense		2,137		1,651		486		29%

Distributable net investment income(a)	$	32,694	$	29,512	$	3,182		11%



Distributable net investment income per share—Basic and diluted(a)	$	0.62	$	0.59	$	0.03		5%

(a): Distributable net investment income is net investment income as determined in accordance with U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. We believe presenting distributable net investment income and related per share amounts is useful and appropriate supplemental disclosure of information for analyzing our financial performance since share-based compensation does not require settlement in cash. However, distributable net investment income is a non-U.S. GAAP measure and should not be considered as a replacement to net investment income and other earnings measures presented in accordance with U.S. GAAP. Instead, distributable net investment income should be reviewed only in connection with such U.S. GAAP measures in analyzing our financial performance. A reconciliation of net investment income in accordance with U.S. GAAP to distributable net investment income is presented in the table above.

Investment Income

For the three months ended September 30, 2016, total investment income was $46.6 million, a 9% increase over the $42.6 million of total investment income for the corresponding period of 2015. This comparable period increase was principally attributable to (i) a $1.4 million increase in interest income primarily related to higher average levels of portfolio debt investments and (ii) a $2.8 million increase in dividend income from Investment Portfolio equity investments. The $4.0 million increase in total investment income in the three months ended September 30, 2016 includes the impact of an increase of $0.3 million primarily related to higher accelerated prepayment and repricing activity for certain Investment Portfolio debt investments when compared to the same period in 2015 and an increase of $1.7 million related to dividend income activity from portfolio companies that is considered to be less consistent on a recurring basis or non-recurring during the period when compared to the same period in 2015.

Expenses

For the three months ended September 30, 2016, total expenses increased to $16.0 million from $14.7 million for the corresponding period of 2015. This comparable period increase in operating expenses was principally attributable to (i) a $0.6 million increase in compensation expense related to increases in the number of personnel, base compensation levels and incentive compensation accruals, (ii) a $0.5 million increase in share-based compensation expense and (iii) a $0.3 million increase in interest expense, primarily due to an increase in interest expense on the Credit Facility in the three months ended September 30, 2016, with these increases partially offset by a $0.1 million increase in the expenses allocated to the External Investment Manager (see further discussion in "Overview"), in each case when compared to the same period in the prior year. For the three months ended September 30, 2016, the ratio of our total operating expenses, excluding interest expense, as a percentage of our quarterly average total assets was 1.5% on an annualized basis, compared to 1.3% on an annualized basis for the three months ended September 30, 2015 and 1.4% for the year ended December 31, 2015.

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Net Investment Income

Net investment income for the three months ended September 30, 2016 was $30.6 million, or a 10% increase, compared to net investment income of $27.9 million for the corresponding period of 2015. The increase in net investment income was principally attributable to the increase in total investment income, partially offset by higher operating expenses as discussed above.

Distributable Net Investment Income

For the three months ended September 30, 2016, distributable net investment income increased 11% to $32.7 million, or $0.62 per share, compared with $29.5 million, or $0.59 per share, in the corresponding period of 2015. The increase in distributable net investment income was primarily due to the higher level of total investment income, partially offset by higher operating expenses as discussed above. Distributable net investment income on a per share basis for the three months ended September 30, 2016 reflects (i) an increase of approximately $0.01 per share from the comparable period in 2015 attributable to the net increase in the comparable levels of accelerated prepayment and repricing activity for certain Investment Portfolio debt investments, (ii) an increase of approximately $0.03 per share from the comparable period in 2015 attributable to the increase in dividend income that is considered to be less consistent on a recurring basis or non-recurring and (iii) a greater number of average shares outstanding compared to the corresponding period in 2015 primarily due to shares issued through the ATM Program (as defined in "—Liquidity and Capital Resources—Capital Resources" below) and shares issued pursuant to our restricted stock plan and dividend reinvestment plan.

Net Increase in Net Assets Resulting from Operations

The net increase in net assets resulting from operations during the three months ended September 30, 2016 was $43.2 million, or $0.82 per share, compared with $20.7 million, or $0.41 per share, during the three months ended September 30, 2015. This $22.5 million increase from the same period in the prior year period was primarily the result of (i) a $16.9 million increase in net change in unrealized appreciation (depreciation) from net unrealized depreciation of $9.1 million for the three months ended September 30, 2015 to net unrealized appreciation of $7.8 million for the three months ended September 30, 2016, (ii) a $5.6 million increase in the net realized gain (loss) from investments from a net realized loss of $1.3 million during the three months ended September 30, 2015 to a net realized gain of $4.3 million for the three months ended September 30, 2016 and (iii) a $2.7 million increase in net investment income as discussed above, partially offset by a $2.7 million decrease in the income tax benefit for the three months ended September 30, 2016. The net realized gain of $4.3 million for the three months ended September 30, 2016 was primarily the result of (i) the net realized gain on the exit of three LMM investments totaling $13.2 million and (ii) the net realized gain of $1.2 million due to activity in our Other Portfolio, partially offset by (i) the realized loss of $7.3 million on the exit of a Private Loan investment and (ii) the realized loss of $2.6 million related to the restructuring of a Middle Market investment.

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The following table provides a summary of the total net unrealized appreciation of $7.8 million for the three months ended September 30, 2016:

	Three Months Ended September 30, 2016

	LMM(a)			Middle Market		Private Loan		Other(b)			Total
	(dollars in millions)
Accounting reversals of net unrealized (appreciation) depreciation recognized in prior periods due to net realized (gains)/losses recognized during period	$	(10.2	)	$	2.6	$	7.3	$	(1.2	)	$	(1.5	)
Net unrealized appreciation (depreciation) relating to portfolio investments		(3.3	)		6.7		0.5		6.0			9.9

Total net change in unrealized appreciation (depreciation) relating to portfolio investments	$	(13.5	)	$	9.3	$	7.8	$	4.8		$	8.4



Net unrealized appreciation relating to marketable securities												0.2
Unrealized depreciation relating to SBIC debentures(c)												(0.8	)

Total net change in unrealized appreciation (depreciation)											$	7.8

(a): LMM includes unrealized appreciation on 20 LMM portfolio investments and unrealized depreciation on 18 LMM portfolio investments.
(b): Other includes $3.2 million of unrealized appreciation relating to the External Investment Manager and $2.8 million of net unrealized appreciation relating to the Other Portfolio.
(c): Relates to unrealized appreciation on the SBIC debentures issued by our wholly-owned subsidiary MSC II which are accounted for on a fair value basis.

The income tax benefit for the three months ended September 30, 2016 of $0.5 million consisted of a deferred tax benefit of $1.4 million, which is primarily the result of the net activity relating to our portfolio investments held in our Taxable Subsidiaries, including changes in loss carryforwards, changes in net unrealized appreciation/depreciation and other temporary book-tax differences, partially offset by $0.9 million of other current tax expense primarily related to an accrual for excise tax on our estimated undistributed taxable income.

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Comparison of the nine months ended September 30, 2016 and September 30, 2015

	Nine Months Ended September 30,						Net Change

	2016			2015			Amount			%
	(dollars in thousands)
Total investment income	$	131,508		$	121,096		$	10,412			9%
Total expenses		(46,137	)		(42,540	)		(3,597	)		8%

Net investment income		85,371			78,556			6,815			9%
Net realized gain (loss) from investments		33,347			(9,037	)		42,384
Net change in net unrealized appreciation (depreciation) from:
Portfolio investments		(29,738	)		21,716			(51,454	)
SBIC debentures and marketable securities and idle funds		909			(1,344	)		2,253

Total net change in net unrealized appreciation (depreciation)		(28,829	)		20,372			(49,201	)
Income tax benefit		1,018			7,004			(5,986	)

Net increase in net assets resulting from operations	$	90,907		$	96,895		$	(5,988	)		(6	)%

	Nine Months Ended September 30,				Net Change

	2016		2015		Amount		%
	(dollars in thousands, except per share amounts)
Net investment income	$	85,371	$	78,556	$	6,815		9%
Share-based compensation expense		5,977		4,592		1,385		30%

Distributable net investment income(a)	$	91,348	$	83,148	$	8,200		10%



Distributable net investment income per share—Basic and diluted(a)	$	1.77	$	1.71	$	0.06		4%

(a): Distributable net investment income is net investment income as determined in accordance with U.S. GAAP, excluding the impact of share-based compensation expense which is non-cash in nature. We believe presenting distributable net investment income and related per share amounts is useful and appropriate supplemental disclosure of information for analyzing our financial performance since share-based compensation does not require settlement in cash. However, distributable net investment income is a non-U.S. GAAP measure and should not be considered as a replacement to net investment income and other earnings measures presented in accordance with U.S. GAAP. Instead, distributable net investment income should be reviewed only in connection with such U.S. GAAP measures in analyzing our financial performance. A reconciliation of net investment income in accordance with U.S. GAAP to distributable net investment income is presented in the table above.

Investment Income

For the nine months ended September 30, 2016, total investment income was $131.5 million, a 9% increase over the $121.1 million of total investment income for the corresponding period of 2015. This comparable period increase was principally attributable to (i) a $4.2 million increase in interest income primarily related to higher average levels of portfolio debt investments and (ii) a $7.7 million increase in dividend income from Investment Portfolio equity investments, partially offset by (i) a $0.8 million decrease in fee income and (ii) a $0.7 million decrease in investment income from Marketable securities and idle funds investments. The $10.4 million increase in total investment income in the nine

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months ended September 30, 2016 includes an increase of $1.7 million related to dividend income activity from portfolio companies that is considered to be less consistent on a recurring basis or non-recurring during the period when compared to the same period in 2015 and the impact of a decrease of $0.9 million primarily related to lower accelerated prepayment and repricing activity for certain Investment Portfolio debt investments when compared to the same period in 2015.

Expenses

For the nine months ended September 30, 2016, total expenses increased to $46.1 million from $42.5 million for the corresponding period of 2015. This comparable period increase in operating expenses was principally attributable to (i) a $1.4 million increase in share-based compensation expense, (ii) a $1.3 million increase in interest expense, primarily due to an increase in interest expense on the Credit Facility generally due to the higher average balance outstanding in the nine months ended September 30, 2016, (iii) a $1.0 million increase in compensation expense related to increases in the number of personnel, base compensation levels and incentive compensation accruals and (iv) a $0.5 million increase in general and administrative expenses, with these increases partially offset by a $0.6 million increase in the expenses allocated to the External Investment Manager, in each case when compared to the same period in the prior year. For the nine months ended September 30, 2016, the ratio of our total operating expenses, excluding interest expense, as a percentage of our quarterly average total assets was 1.4% on an annualized basis, which is consistent with the ratio on an annualized basis for the nine months ended September 30, 2015 and for the year ended December 31, 2015.

Net Investment Income

Net investment income for the nine months ended September 30, 2016 was $85.4 million, or a 9% increase, compared to net investment income of $78.6 million for the corresponding period of 2015. The increase in net investment income was principally attributable to the increase in total investment income, partially offset by higher operating expenses as discussed above.

Distributable Net Investment Income

For the nine months ended September 30, 2016, distributable net investment income increased 10% to $91.3 million, or $1.77 per share, compared with $83.1 million, or $1.71 per share, in the corresponding period of 2015. The increase in distributable net investment income was primarily due to the higher level of total investment income, partially offset by higher operating expenses both as discussed above. Distributable net investment income on a per share basis for the nine months ended September 30, 2016 reflects (i) a decrease of approximately $0.02 per share from the comparable period in 2015 attributable to the net decrease in the comparable levels of accelerated prepayment and repricing activity for certain Investment Portfolio debt investments, (ii) an increase of approximately $0.03 per share from the comparable period in 2015 attributable to the increase in dividend income that is considered to be less consistent on a recurring basis or non-recurring and (iii) a greater number of average shares outstanding compared to the corresponding period in 2015 primarily due to the March 2015 equity offering, shares issued through the ATM Program and shares issued pursuant to our restricted stock plan and dividend reinvestment plan.

Net Increase in Net Assets Resulting from Operations

The net increase in net assets resulting from operations during the nine months ended September 30, 2016 was $90.9 million, or $1.76 per share, compared with $96.9 million, or $1.99 per share, during the nine months ended September 30, 2015. This $6.0 million decrease from the same period in the prior year period was primarily the result of (i) a $49.2 million decrease in net change in unrealized appreciation (depreciation) from net unrealized appreciation of $20.4 million for the nine

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months ended September 30, 2015 to net unrealized depreciation of $28.8 million for the nine months ended September 30, 2016 and (ii) a $6.0 million decrease in the income tax benefit from the same period in the prior year, partially offset by (i) a $6.8 million increase in net investment income as discussed above and (ii) a $42.4 million increase in the net realized gain (loss) from investments from a net realized loss of $9.0 million during the nine months ended September 30, 2015 to a net realized gain of $33.3 million for the nine months ended September 30, 2016. The net realized gain of $33.3 million for the nine months ended September 30, 2016 was primarily the result of (i) the net realized gain of $56.3 million on the exit five LMM investments and (ii) the net realized gain of $2.8 million due to activity in our Other Portfolio, partially offset by (i) the net realized loss of $9.6 million on the exit of three Private Loan investments, (ii) the net realized loss of $10.0 million related to the restructuring of three Middle Market investments, (iii) the net realized loss of $4.7 million on the exit of two Middle Market investments and (iv) the net realized loss of $1.6 million on the exit of a Marketable securities and idle funds investment.

The following table provides a summary of the total net unrealized depreciation of $28.8 million for the nine months ended September 30, 2016:

	Nine Months Ended September 30, 2016

	LMM(a)			Middle Market		Private Loan			Other(b)			Total
	(dollars in millions)
Accounting reversals of net unrealized (appreciation) depreciation recognized in prior periods due to net realized (gains)/losses recognized during period	$	(52.9	)	$	18.7	$	9.5		$	(2.7	)	$	(27.4	)
Net change in unrealized appreciation (depreciation) relating to portfolio investments		1.9			1.5		(5.3	)		(0.4	)		(2.3	)

Total net change in unrealized appreciation (depreciation) relating to portfolio investments	$	(51.0	)	$	20.2	$	4.2		$	(3.1	)	$	(29.7	)



Net change in unrealized appreciation relating to marketable securities													1.7
Unrealized depreciation relating to SBIC debentures(c)													(0.8	)

Total net change in unrealized appreciation (depreciation)												$	(28.8	)

(a): LMM includes unrealized appreciation on 29 LMM portfolio investments and unrealized depreciation on 26 LMM portfolio investments.
(b): Other includes $3.3 million of net unrealized depreciation relating to the Other Portfolio offset by $2.9 million of unrealized appreciation relating to the External Investment Manager.
(c): Relates to unrealized depreciation on the SBIC debentures held by MSC II which are accounted for on a fair value basis.

The income tax benefit for the nine months ended September 30, 2016 of $1.0 million principally consisted of a deferred tax benefit of $3.4 million, which is primarily the result of the net activity relating to our portfolio investments held in our Taxable Subsidiaries, including changes in loss carryforwards, changes in net unrealized appreciation/depreciation and other temporary book-tax differences, partially offset by other current tax expense related to (i) a $2.1 million accrual for excise

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tax on our estimated undistributed taxable income and (ii) other current tax expense of $0.3 million related to accruals for U.S. federal and state income taxes.

Liquidity and Capital Resources

Cash Flows

For the nine months ended September 30, 2016, we experienced a net increase in cash and cash equivalents in the amount of $11.5 million, which is the result of $9.4 million of cash provided by our operating activities and $2.0 million of cash provided by financing activities.

During the period, we generated $9.4 million of cash from our operating activities, which resulted primarily from (i) cash flows we generated from the operating profits earned through our operating activities totaling $79.7 million, which is our $91.3 million of distributable net investment income, excluding the non-cash effects of the accretion of unearned income of $7.1 million, payment-in-kind interest income of $4.9 million, cumulative dividends of $1.5 million and the amortization expense for deferred financing costs of $1.9 million, (ii) cash uses totaling $423.5 million which primarily resulted from (a) the funding of new portfolio company investments and settlement of accruals for portfolio investments existing as of December 31, 2015, which collectively total $420.0 million, (b) $3.0 million related to decreases in payables and accruals and (c) $0.5 million from the purchase of Marketable securities and idle funds investments and (iii) cash proceeds totaling $353.2 million from (a) $347.9 million in cash proceeds from the sales and repayments of debt investments and sales of and return on capital of equity investments and (b) $4.3 million of cash proceeds from the sale of Marketable securities and idle funds investments and (c) decreases in other assets of $1.0 million.

During the nine months ended September 30, 2016, $2.0 million in cash was provided by financing activities, which principally consisted of (i) $64.3 million in net cash proceeds from the ATM Program (described below), (ii) $22.0 million in net cash proceeds from the Credit Facility and (iii) $6.0 million in cash proceeds from issuance of SBIC debentures, partially offset by (i) $86.7 million in cash dividends paid to stockholders, (ii) $2.6 million for purchases of vested restricted stock from employees to satisfy their tax withholding requirements upon the vesting of such restricted stock and (iii) $1.0 million for payment of deferred loan costs, SBIC debenture fees and other costs.

Capital Resources

As of September 30, 2016, we had $31.8 million in cash and cash equivalents and $242.0 million of unused capacity under the Credit Facility, which we maintain to support our investment and operating activities. As of September 30, 2016, our net asset value totaled $1,144.4 million, or $21.62 per share.

The Credit Facility, which provides additional liquidity to support our investment and operational activities, includes total commitments of $555.0 million from a diversified group of fourteen lenders and matures in September 2020. The Credit Facility also contains an accordion feature which allows us to increase the total commitments under the facility to up to $750.0 million from new and existing lenders on the same terms and conditions as the existing commitments.

Borrowings under the Credit Facility bear interest, subject to our election, on a per annum basis at a rate equal to the applicable LIBOR rate (0.53% as of September 30, 2016) plus (i) 1.875% (or the applicable base rate (Prime Rate of 3.50% as of September 30, 2016) plus 0.875%) as long as we maintain an investment grade rating and meet certain agreed upon excess collateral and maximum leverage requirements, (ii) 2.0% (or the applicable base rate plus 1.0%) if we maintain an investment grade rating but, do not meet certain excess collateral and maximum leverage requirements or (iii) 2.25% (or the applicable base rate plus 1.25%) if we do not maintain an investment grade rating. We pay unused commitment fees of 0.25% per annum on the unused lender commitments under the Credit Facility. The Credit Facility is secured by a first lien on the assets of MSCC and its subsidiaries,

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excluding the equity ownership or assets of the Funds and the External Investment Manager. The Credit Facility contains certain affirmative and negative covenants, including but not limited to: (i) maintaining a minimum availability of at least 10% of the borrowing base, (ii) maintaining an interest coverage ratio of at least 2.0 to 1.0, (iii) maintaining an asset coverage ratio of at least 1.5 to 1.0 and (iv) maintaining a minimum tangible net worth. The Credit Facility is provided on a revolving basis through its final maturity date in September 2020, and contains two, one-year extension options which could extend the final maturity by up to two years, subject to certain conditions, including lender approval. As of September 30, 2016, we had $313.0 million in borrowings outstanding under the Credit Facility, the interest rate on the Credit Facility was 2.4% and we were in compliance with all financial covenants of the Credit Facility.

Due to each of the Funds' status as a licensed SBIC, we have the ability to issue, through the Funds, debentures guaranteed by the SBA at favorable interest rates and favorable terms and conditions. In addition, in December 2015, the 2016 omnibus spending bill approved by Congress and signed into law by the President increased the amount of SBA-guaranteed debentures that affiliated SBIC funds can have outstanding from $225.0 million to $350.0 million. This new legislation allows us to issue additional SBIC debentures, subject to SBA approval, above the $225.0 million that we had outstanding prior to the legislation. In August 2016, we received a license from the SBA to form and operate a third SBIC, which at the time provided us with up to an additional $125.0 million of additional long-term, fixed interest rate debt capital through the issuance of SBA-guaranteed debentures. During September 2016, we issued $6.0 million of SBIC debentures, leaving $119.0 million of remaining capacity. Debentures guaranteed by the SBA have fixed interest rates that equal prevailing 10-year Treasury Note rates plus a market spread and have a maturity of ten years with interest payable semi-annually. The principal amount of the debentures is not required to be paid before maturity, but may be pre-paid at any time with no prepayment penalty. On September 30, 2016, through our three wholly owned SBICs, we had $231.0 million of outstanding SBIC debentures guaranteed by the SBA, which bear a weighted-average annual fixed interest rate of approximately 4.1%, paid semi-annually, and mature ten years from issuance. The first maturity related to our SBIC debentures does not occur until 2017, and the weighted-average remaining duration is approximately 5.0 years as of September 30, 2016.

In April 2013, we issued $92.0 million, including the underwriters' full exercise of their over-allotment option, in aggregate principal amount of the 6.125% Notes. The 6.125% Notes are unsecured obligations and rank pari passu with our current and future unsecured indebtedness; senior to any of our future indebtedness that expressly provides it is subordinated to the 6.125% Notes; effectively subordinated to all of our existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under our Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of our subsidiaries, including without limitation, the indebtedness of the Funds. The 6.125% Notes mature on April 1, 2023, and may be redeemed in whole or in part at any time or from time to time at our option on or after April 1, 2018. We may from time to time repurchase 6.125% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of September 30, 2016, the outstanding balance of the 6.125% Notes was $90.7 million.

The indenture governing the 6.125% Notes (the "6.125% Notes Indenture") contains certain covenants, including covenants requiring our compliance with (regardless of whether we are subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring us to provide financial information to the holders of the 6.125% Notes and the Trustee if we cease to be subject to the reporting requirements of the Securities Exchange Act of 1934. These covenants are subject to limitations and exceptions that are described in the 6.125% Notes Indenture.

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In November 2014, we issued $175.0 million in aggregate principal amount of the 4.50% Notes at an issue price of 99.53%. The 4.50% Notes are unsecured obligations and rank pari passu with our current and future unsecured indebtedness; senior to any of our future indebtedness that expressly provides it is subordinated to the 4.50% Notes; effectively subordinated to all of our existing and future secured indebtedness, to the extent of the value of the assets securing such indebtedness, including borrowings under our Credit Facility; and structurally subordinated to all existing and future indebtedness and other obligations of any of our subsidiaries, including without limitation, the indebtedness of the Funds. The 4.50% Notes mature on December 1, 2019, and may be redeemed in whole or in part at any time at our option subject to certain make-whole provisions. The 4.50% Notes bear interest at a rate of 4.50% per year payable semi-annually on June 1 and December 1 of each year, beginning June 1, 2015. We may from time to time repurchase 4.50% Notes in accordance with the 1940 Act and the rules promulgated thereunder. As of September 30, 2016, the outstanding balance of the 4.50% Notes was $175.0 million.

The indenture governing the 4.50% Notes (the "4.50% Notes Indenture") contains certain covenants, including covenants requiring our compliance with (regardless of whether we are subject to) the asset coverage requirements set forth in Section 18(a)(1)(A) as modified by Section 61(a)(1) of the 1940 Act, as well as covenants requiring us to provide financial information to the holders of the 4.50% Notes and the Trustee if we cease to be subject to the reporting requirements of the Securities Exchange Act of 1934. These covenants are subject to limitations and exceptions that are described in the 4.50% Notes Indenture.

During March 2015, we completed a follow-on public equity offering of 4,370,000 shares of common stock, including the underwriters' full exercise of their option to purchase 570,000 additional shares, resulting in total net proceeds, including exercise of the underwriters' option to purchase additional shares and after deducting underwriting discounts and estimated offering expenses payable by us, of approximately $127.8 million.

During November 2015, we commenced a program with selling agents through which we can sell shares of our common stock by means of at-the-market offerings from time to time (the "ATM Program"). During the three months ended December 31, 2015, we sold 140,568 shares of our common stock at a weighted-average price of $31.98 per share and raised $4.5 million of gross proceeds under the ATM Program. Net proceeds were $4.3 million after commissions to the selling agents on shares sold and offering costs.

During the nine months ended September 30, 2016, we sold 1,996,793 shares of our common stock at a weighted-average price of $32.67 per share and raised $65.2 million of gross proceeds under the ATM Program. Net proceeds were $64.3 million after commissions to the selling agents on shares sold and offering costs. As of September 30, 2016, sales transactions representing 30,804 shares had not settled and are not included in shares issued and outstanding on the face of the consolidated balance sheet, but are included in the weighted average shares outstanding on the consolidated statement of operations and in the shares used to calculate our net asset value per share. As of September 30, 2016, 362,639 shares were available for sale under the ATM Program.

We anticipate that we will continue to fund our investment activities through existing cash and cash equivalents, the liquidation of Marketable securities and idle funds investments, and a combination of future issuances of debt and equity capital. Our primary uses of funds will be investments in portfolio companies, operating expenses and cash distributions to holders of our common stock.

We periodically invest excess cash balances into Marketable securities and idle funds investments. The primary investment objective of Marketable securities and idle funds investments is to generate incremental cash returns on excess cash balances prior to utilizing those funds for investment in our LMM, Middle Market and Private Loan portfolio investments. Marketable securities and idle funds investments generally consist of debt investments, independently rated debt investments, certificates of

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deposit with financial institutions, diversified bond funds and publicly traded debt and equity investments. The composition of Marketable securities and idle funds investments will vary in a given period based upon, among other things, changes in market conditions, the underlying fundamentals in our Marketable securities and idle funds investments, our outlook regarding future LMM, Middle Market and Private Loan portfolio investment needs, and any regulatory requirements applicable to us.

If our common stock trades below our net asset value per share, we will generally not be able to issue additional common stock at the market price unless our stockholders approve such a sale and our Board of Directors makes certain determinations. We did not seek stockholder authorization to sell shares of our common stock below the then current net asset value per share of our common stock at our 2016 annual meeting of stockholders because our common stock price per share had been trading significantly above the current net asset value per share of our common stock since 2011. We would therefore need future approval from our stockholders to issue shares below the then current net asset value per share.

In order to satisfy the Code requirements applicable to a RIC, we intend to distribute to our stockholders, after consideration and application of our ability under the Code to carry forward certain excess undistributed taxable income from one tax year into the next tax year, substantially all of our taxable income. In addition, as a BDC, we generally are required to meet a coverage ratio of total assets to total senior securities, which include borrowings and any preferred stock we may issue in the future, of at least 200%. This requirement limits the amount that we may borrow. In January 2008, we received an exemptive order from the SEC to exclude SBA guaranteed debt securities issued by MSMF and any other wholly owned subsidiaries of ours which operate as SBICs from the asset coverage requirements of the 1940 Act as applicable to us, which, in turn, enables us to fund more investments with debt capital.

Although we have been able to secure access to additional liquidity, including recent public equity and historical debt offerings, our $555.0 million Credit Facility, and the available leverage through the SBIC program, there is no assurance that debt or equity capital will be available to us in the future on favorable terms, or at all.

Recently Issued or Adopted Accounting Standards

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) . ASU 2014-9 supersedes the revenue recognition requirements under ASC Topic 605, Revenue Recognition , and most industry-specific guidance throughout the Industry Topics of the ASC. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which an entity expects to be entitled in exchange for those goods or services. Under the new guidance, an entity is required to perform the following five steps: (1) identify the contract(s) with a customer; (2) identify the performance obligations in the contract; (3) determine the transaction price; (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. The new guidance will significantly enhance comparability of revenue recognition practices across entities, industries, jurisdictions and capital markets. Additionally, the guidance requires improved disclosures as to the nature, amount, timing and uncertainty of revenue that is recognized. In May 2016, the FASB issued ASU No. 2016-12, Revenue from Contracts with Customers (Topic 606)—Narrow-Scope Improvements and Practical Expedients . This ASU clarified guidance on assessing collectability, presenting sales tax, measuring noncash consideration, and certain transition matters. The FASB tentatively decided to defer the effective date of the new revenue standard for public entities under U.S. GAAP for one year. If finalized, the new guidance will be effective for the annual reporting period beginning after December 15, 2017, including interim periods within that reporting period. Early adoption would be permitted for annual reporting periods beginning

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after December 15, 2016. We are currently evaluating the impact the adoption of this new accounting standard will have on our consolidated financial statements.

In May 2015, the FASB issued ASU 2015-07, Fair Value Measurements—Disclosures for Certain Entities that Calculate Net Asset Value per Share . This amendment updates guidance intended to eliminate the diversity in practice surrounding how investments measured at net asset value under the practical expedient with future redemption dates have been categorized in the fair value hierarchy. Under the updated guidance, investments for which fair value is measured at net asset value per share using the practical expedient should no longer be categorized in the fair value hierarchy, while investments for which fair value is measured at net asset value per share but the practical expedient is not applied should continue to be categorized in the fair value hierarchy. The updated guidance requires retrospective adoption for all periods presented and is effective for interim and annual reporting periods beginning after December 15, 2015, with early adoption permitted. The Company adopted this standard during the three months ended March 31, 2016. There was no impact of the adoption of this new accounting standard on our consolidated financial statements as none of our investments are measured through the use of the practical expedient.

In February 2016, the FASB issued ASU 2016-02, Leases , which requires lessees to recognize on the balance sheet a right-of-use asset, representing its right to use the underlying asset for the lease term, and a lease liability for all leases with terms greater than 12 months. The guidance also requires qualitative and quantitative disclosures designed to assess the amount, timing, and uncertainty of cash flows arising from leases. The standard requires the use of a modified retrospective transition approach, which includes a number of optional practical expedients that entities may elect to apply. The new guidance is effective for annual periods beginning after December 15, 2018, and interim periods therein. Early application is permitted. The impact of the adoption of this new accounting standard on our consolidated financial statements is currently being evaluated.

In March 2016, the FASB issued ASU 2016-09, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting , which is intended to simplify several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. The guidance is effective for annual periods beginning after December 15, 2016, and interim periods therein. Early application is permitted. The Company elected to early adopt this standard during the three months ended March 31, 2016. See further discussion of the impact of the adoption of this standard in "Note B.8.—Summary of Significant Accounting Policies—Share-based Compensation" in the notes to consolidated financial statements

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230) , which is intended to reduce the existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The guidance is effective for annual periods beginning after December 15, 2017, and interim periods therein. Early application is permitted. The impact of the adoption of this new accounting standard on our consolidated financial statements is not expected to be material.

From time to time, new accounting pronouncements are issued by the FASB or other standards setting bodies that are adopted by us as of the specified effective date. We believe that the impact of recently issued standards and any that are not yet effective will not have a material impact on our financial statements upon adoption.

Inflation

Inflation has not had a significant effect on our results of operations in any of the reporting periods presented herein. However, our portfolio companies have experienced, and may in the future

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experience, the impacts of inflation on their operating results, including periodic escalations in their costs for labor, raw materials and third party services and required energy consumption.

Off-Balance Sheet Arrangements

We may be a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financial needs of our portfolio companies. These instruments include commitments to extend credit and fund equity capital and involve, to varying degrees, elements of liquidity and credit risk in excess of the amount recognized in the balance sheet. At September 30, 2016, we had a total of $108.8 million in outstanding commitments comprised of (i) 30 investments with commitments to fund revolving loans that had not been fully drawn or term loans with additional commitments not yet funded and (ii) nine investments with equity capital commitments that had not been fully called.

Contractual Obligations

As of September 30, 2016, the future fixed commitments for cash payments in connection with our SBIC debentures, the 4.50% Notes and the 6.125% Notes for each of the next five years and thereafter are as follows:

	2016		2017		2018		2019		2020		2021 and thereafter		Total

SBIC debentures	$	—	$	15,000	$	10,200	$	20,000	$	55,000	$	130,800	$	231,000
Interest due on SBIC debentures(1)		—		9,569		8,293		7,970		6,772		11,155		43,759
Notes 6.125%		—		—		—		—		—		90,655		90,655
Interest due on 6.125% Notes		1,388		5,553		5,553		5,553		5,553		12,492		36,092
4.50% Notes		—		—		—		175,000		—		—		175,000
Interest due on 4.50% Notes		3,938		7,875		7,875		7,875		—		—		27,563

Total	$	5,326	$	37,997	$	31,921	$	216,398	$	67,325	$	245,102	$	604,069

(1): The interest due on the $6.0 million of SBIC debentures drawn in September 2016 does not have a final rate that has been fixed by the SBA as of September 30, 2016. In March 2017, the final rate for this tranche of SBIC debentures will be determined and, thereafter, the rate will be fixed for the ensuing 10 years. The table above assumes that the interim rate being charged as of September 30, 2016 will be used until the final maturity. This rate will be adjusted once the final rate is determined.

As of September 30, 2016, we had $313.0 million in borrowings outstanding under our Credit Facility, and the Credit Facility is currently scheduled to mature in September 2020. The Credit Facility contains two, one-year extension options which could extend the maturity to September 2022. See further discussion of the Credit Facility terms in "—Liquidity and Capital Resources—Capital Resources".

Related Party Transactions

As discussed further above, the External Investment Manager is treated as a wholly owned portfolio company of MSCC and is included as part of our Investment Portfolio. At September 30, 2016, we had a receivable of $2.2 million due from the External Investment Manager which included approximately $1.4 million primarily related to operating expenses incurred by us required to support the External Investment Manager's business, along with dividends declared but not paid by the External Investment Manager of approximately $0.8 million.

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In November 2015, our board of directors approved and adopted the Main Street Capital Corporation Deferred Compensation Plan (the "2015 Deferred Compensation Plan"). The 2015 Deferred Compensation Plan became effective on January 1, 2016 and replaced the Deferred Compensation Plan for Non-Employee Directors previously adopted by the board of directors in June 2013 (the "2013 Deferred Compensation Plan"). Under the 2015 Deferred Compensation Plan, non-employee directors and certain key employees may defer receipt of some or all of their cash compensation and directors' fees, subject to certain limitations. Individuals participating in the 2015 Deferred Compensation Plan receive distributions of their respective balances based on predetermined payout schedules or other events as defined by the plan and are also able to direct investments made on their behalf among investment alternatives permitted from time to time under the plan, including phantom Main Street stock units. As of September 30, 2016, $2.0 million of compensation and directors' fees had been deferred under the 2015 Deferred Compensation Plan (including amounts previously deferred under the 2013 Deferred Compensation Plan). Of this amount, $1.7 million was deferred into phantom Main Street stock units, representing 55,753 shares of our common stock. Including phantom stock units issued through dividend reinvestment, the phantom stock units outstanding as of September 30, 2016 represented 63,257 shares of our common stock. Any amounts deferred under the plan represented by phantom stock units will not be issued or included as outstanding on the consolidated statement of changes in net assets until such shares are actually distributed to the participant in accordance with the plan, but are included in operating expenses and weighted average shares outstanding on our consolidated statement of operations as earned.

Recent Developments

During October 2016, we declared a semi-annual supplemental cash dividend of $0.275 per share payable in December 2016. This supplemental cash dividend is in addition to the previously announced regular monthly cash dividends that we declared for the fourth quarter of 2016 of $0.185 per share for each of October, November and December 2016.

In November 2016, we declared regular monthly dividends of $0.185 per share for each month of January, February and March of 2017. These regular monthly dividends equal a total of $0.555 per share for the first quarter of 2017 and represent a 2.8% increase from the regular monthly dividends declared for the first quarter of 2016. Including the semi-annual supplemental dividend declared for December 2016 and the regular monthly dividends declared for the first quarter of 2017, we will have paid $19.160 per share in cumulative dividends since its October 2007 initial public offering.

In October 2016, we amended our Credit Facility to extend the maturity by one year to September 2021. The Credit Facility includes total commitments of $555.0 million from a diversified group of fourteen lenders and also contains an accordion feature which allows us to increase the total commitments under the facility to up to $750.0 million from new and existing lenders on the same terms and conditions as the existing commitments.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are subject to financial market risks, including changes in interest rates. Changes in interest rates may affect both our cost of funding and our interest income from portfolio investments and Marketable securities and idle funds investments. Our risk management systems and procedures are designed to identify and analyze our risk, to set appropriate policies and limits and to continually monitor these risks. Our investment income will be affected by changes in various interest rates, including LIBOR and prime rates, to the extent that any debt investments include floating interest rates. The majority of our debt investments are made with either fixed interest rates or floating rates that are subject to contractual minimum interest rates for the term of the investment. As of September 30, 2016, approximately 64% of our debt investment portfolio (at cost) bore interest at floating rates, 98% of which were subject to contractual minimum interest rates. Our interest expense

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will be affected by changes in the published LIBOR rate in connection with our Credit Facility; however, the interest rates on our outstanding SBIC debentures, 4.50% Notes and 6.125% Notes, which comprise the majority of our outstanding debt, are fixed for the life of such debt. As of September 30, 2016, we had not entered into any interest rate hedging arrangements. The following table shows the approximate annualized increase or decrease in the components of net investment income due to hypothetical base rate changes in interest rates, assuming no changes in our investments and borrowings as of September 30, 2016.

Basis Point Change	Increase in Interest Income		Increase in Interest Expense			Increase (Decrease) in Net Investment Income		Increase (Decrease) in Net Investment Income per Share

			(dollars in thousands)
50	$	2,905	$	(1,565	)	$	1,340	$	0.03
100		7,501		(3,130	)		4,371		0.08
150		12,214		(4,695	)		7,519		0.14
200		16,980		(6,260	)		10,720		0.20
300		26,512		(9,390	)		17,122		0.32
400		36,058		(12,520	)		23,538		0.44
500		45,617		(15,650	)		29,967		0.57

Basis Point Change

The hypothetical results would also be impacted by the changes in the amount of debt outstanding under our Credit Facility (with an increase (decrease) in the debt outstanding under the Credit Facility resulting in an (increase) decrease in the hypothetical interest expense).

Item 4. Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chairman and Chief Executive Officer, our President, our Chief Financial Officer, our Chief Compliance Officer and our Chief Accounting Officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15 of the Securities Exchange Act of 1934). Based on that evaluation, our Chairman and Chief Executive Officer, our President, our Chief Financial Officer, our Chief Compliance Officer and our Chief Accounting Officer, have concluded that our current disclosure controls and procedures are effective in timely alerting them of material information relating to us that is required to be disclosed in the reports we file or submit under the Securities Exchange Act of 1934. There have been no changes in our internal control over financial reporting that occurred during the quarter ended September 30, 2016 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II—OTHER INFORMATION

Item 1. Legal Proceedings

We may, from time to time, be involved in litigation arising out of our operations in the normal course of business or otherwise. Furthermore, third parties may try to seek to impose liability on us in connection with the activities of our portfolio companies. While the outcome of any current legal proceedings cannot at this time be predicted with certainty, we do not expect any current matters will materially affect our financial condition or results of operations; however, there can be no assurance whether any pending legal proceedings will have a material adverse effect on our financial condition or results of operations in any future reporting period.

Item 1A. Risk Factors

There have been no material changes to the risk factors as previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2015 that we filed with the SEC on February 26, 2016, and as updated in our Form N-2 filed on May 16, 2016.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

During the three months ended September 30, 2016, we issued 84,153 shares of our common stock under our dividend reinvestment plan. These issuances were not subject to the registration requirements of the Securities Act of 1933, as amended. The aggregate value of the shares of common stock issued during the three months ended September 30, 2016 under the dividend reinvestment plan was approximately $2.8 million.

Item 6. Exhibits

Listed below are the exhibits which are filed as part of this report (according to the number assigned to them in Item 601 of Regulation S-K):

Exhibit Number			Description of Exhibit

	10.1		Sixth Amendment to Second Amended and Restated Credit Agreement dated October 31, 2016 (previously filed as Exhibit 10.1 to Main Street Capital Corporation's Current Report on Form 8-K filed on November 1, 2016 (File No. 1-33723)).
	14.1		Code of Business Conduct and Ethics.
	31.1		Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
	31.2		Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
	32.1		Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).
	32.2		Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).

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SIGNATURES

Pursuant to the requirements 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.


		Main Street Capital Corporation
Date: November 4, 2016		/s/ VINCENT D. FOSTER Vincent D. Foster Chairman and Chief Executive Officer (principal executive officer)
Date: November 4, 2016		/s/ BRENT D. SMITH Brent D. Smith Chief Financial Officer and Treasurer (principal financial officer)
Date: November 4, 2016		/s/ SHANNON D. MARTIN Shannon D. Martin Vice President and Chief Accounting Officer (principal accounting officer)

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EXHIBIT INDEX

Exhibit Number			Description of Exhibit

	14.1		Code of Business Conduct and Ethics.
	31.1		Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
	31.2		Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934.
	32.1		Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).
	32.2		Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. 1350).

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TABLE OF CONTENTS

Part I Financial Information Part II Other Information Item 2. Management's Discussion and Analysis Of Financial Condition and Results Of Operations Item 3. Quantitative and Qualitative Disclosures About Market Risk Item 4. Controls and Procedures Item 1. Legal Proceedings Item 1A. Risk Factors Item 2. Unregistered Sales Of Equity Securities and Use Of Proceeds Item 6. Exhibits

MAIN 10-Q Quarter ended Sept. 30, 2016