T 10-K Annual Report Dec. 31, 2020

AT&T INC.

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TABLE OF CONTENTS

Part I Item 1. Business Item 1A. Risk Factors Item 2. Properties Item 3. Legal Proceedings Item 4. Mine Safety Disclosures Part II Item 5. Market For Registrant S Common Equity, Related Stockholder Matters and Issuer Purchases Of Equity Securities Item 6. Selected Financial Data Item 7. Management S Discussion and Analysis Of Financial Condition and Results Of Operations Item 7A. Quantitative and Qualitative Disclosures About Market Risk Item 8. Financial Statements and Supplementary Data Note 1. Summary Of Significant Accounting Policies Note 2. Earnings Per Share Note 3. Other Comprehensive Income Note 4. Segment Information Note 5. Revenue Recognition Note 6. Acquisitions, Dispositions and Other Adjustments Note 7. Property, Plant and Equipment Note 8. Leases Note 9. Goodwill and Other Intangible Assets Note 10. Equity Method Investments Note 11. Inventories and Theatrical Film and Television Production Costs Note 12. Debt Note 13. Fair Value Measurements and Disclosure Note 14. Income Taxes Note 15. Pension and Postretirement Benefits Note 16. Share-based Payments Note 17. Stockholders Equity Note 18. Sales Of Receivables Note 19. Tower Transaction Note 20. Firstnet Note 21. Contingent Liabilities Note 22. Additional Financial Information Note 23. Subsequent Events (unaudited)Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure Item 9A. Controls and Procedures Item 9B. Other Information Part III Item 10. Directors, Executive Officers and Corporate Governance Item 11. Executive Compensation Item 12. Security Ownership Of Certain Beneficial Owners and Management and Related Stockholder Matters Item 13. Certain Relationships and Related Transactions, and Director Independence Item 14. Principal Accountant Fees and Services Part IV Item 15. Exhibits and Financial Statement Schedules Item 16. Form 10-k Summary

Exhibits

10-u Form of Indemnity Agreement, effective July 1, 1986, between Southwestern Bell Corporation (now AT&T Inc.) and its directors and officers. (Exhibit 10-bb to Form 10-K for the period ending December 31, 2011)* 10-v AT&T Executive Physical Program (Exhibit 10-ff to Form 10-K for the period ending December 31, 2016)* 10-w Attorney Fee Payment Agreement for John Stankey (Exhibit 10.1 to Form 8-K filed on July 3, 2018)* 10-x Agreement between Jason Kilar and WarnerMedia LLC(Exhibit 10.2 to Form 10-Q for the period ending June 30, 2020)* 10-y $7,500,000,000 Amended and Restated Credit Agreement, dated as of November 17, 2020, among AT&T Inc., certain lenders named therein and Citibank, N.A., as agent. (Exhibit 10.1 to Form 8-K filed onNovember 18, 2020) 10-z $7,500,000,000 Five Year Credit Agreement, dated as of December 11, 2018, among AT&T Inc., certain lenders named therein and Citibank, N.A., as agent (Exhibit 10.2 to Form 8-K filed on December 13, 2018) 10-aa Amendment No. 1 to the $7,500,000,000 Five Year Credit Agreement, dated December 11, 2018, among AT&T, certain lenders named therein and Citibank, N.A., as agent. (Exhibit 10.2 to Form 8-K filed on November 18, 2020) 10-bb Amended and Restated Contribution Agreement (Exhibit 10-ee to Form 10-K for the period ending December 31, 2018) 10-cc Fifth Amended and Restated Limited Liability Company Agreement of Mobility II LLC (Exhibit 10-1to Form 10-Qfor the period endingSeptember 30, 2020) 10-dd First Amendment to the Fourth Amended and Restated Limited Liability Company Agreement of Mobility II LLC (Exhibit 10-gg to Form 10-K for the period ending December 31,2018) 10-ee Second Amendment to the Fourth Amended and Restated Limited Liability Company Agreement of Mobility II LLC(Exhibit 10-hh to Form 10-K for the period ending December 31, 2018) 10-ff Amended and Restated Registration Rights Agreement by and among AT&T Inc. and The SBC Master Pension Trust and Brock Fiduciary Services LLC (Exhibit 10-ii to Form 10-K for the period ending December 31, 2018) 10-gg First Amendment to Amended and Restated Registration Rights Agreement by and among AT&T Inc. and The SBC Master Pension Trust and Brock Fiduciary Services LLC (Exhibit 10.2 to Form 10-Q for the period ending September 30, 2020) 10-hh Second Amended and Restated Limited Liability Company Agreement of NCWPCS MPL Holdings, LLC (Exhibit 10.1 to Form 8-K filed on December 12, 2019) 10-ii AT&T Inc. Change in Control Severance Plan (Exhibit 10.1 to Form 8-K filed on June 30, 2014)* 10-jj Agreement of Contribution and Subscription, dated February 25, 2021(Exhibit 10.1 to Form 8-K filed on February 25,2021) 21 Subsidiaries of AT&T Inc. 23 Consent of Ernst & Young LLP 24 Powers of Attorney 31.1 Certification of Principal Executive Officer 31.2 Certification of Principal Financial Officer 32 Section 1350 Certification

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QUALCOMM Incorporated	QCOM
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Broadcom Inc.	AVGO
3M Company	MMM
Apple Inc.	AAPL
Microsoft Corporation	MSFT
Alphabet Inc.	GOOGL
Adobe Inc.	ADBE
Cisco Systems, Inc.	CSCO
Intel Corporation	INTC
QUALCOMM Incorporated	QCOM
Danaher Corporation	DHR

T 10-K Fiscal year ended Dec. 31, 2020

Exhibits