Item 15. Exhibits, Financial Statement Schedules:

	(a)	The following documents are filed as part of this report:

	1.	Financial statements from IBM’s 2020 Annual Report to Stockholders, which are incorporated herein by reference:

Report of Independent Registered Public Accounting Firm (page 66 and 67).

Consolidated Income Statement for the years ended December 31, 2020, 2019 and 2018 (page 68).

Consolidated Statement of Comprehensive Income for the years ended December 31, 2020, 2019 and 2018 (page 69).

Consolidated Balance Sheet at December 31, 2020 and 2019 (page 70).

Consolidated Statement of Cash Flows for the years ended December 31, 2020, 2019 and 2018 (page 71).

Consolidated Statement of Equity at December 31, 2020, 2019 and 2018 (pages 72 and 73).

Notes to Consolidated Financial Statements (pages 74 through 140).

	2.	Financial statement schedule required to be filed by Item 8 of this Form:


Page	Schedule Number
		Report of Independent Registered Public Accounting Firm on Financial Statement Schedule.
S-1	II	Valuation and Qualifying Accounts and Reserves for the years ended December 31, 2020, 2019 and 2018.

All other schedules are omitted as the required matter is not present, the amounts are not significant or the information is shown in the Consolidated Financial Statements or the notes thereto.

	3.	Exhibits:


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
(3)	Certificate of Incorporation and By-laws.
	The Certificate of Incorporation of IBM is Exhibit 3.2 to Form 8-K filed April 27, 2007, and is hereby incorporated by reference.
	The By-Laws of IBM, as amended through January 1, 2021, is Exhibit 3.2 to Form 8-K, filed December 18, 2020, and is hereby incorporated by reference.
	The By-Laws of IBM, as amended effective April 27, 2021.	3.2
(4)	Instruments defining the rights of security holders.
	The instruments defining the rights of the holders of the 7.00% Debentures due 2025 and the 7.00% Debentures due 2045 are Exhibits 2 and 3, respectively, to Form 8-K, filed on October 30, 1995, and are hereby incorporated by reference.
	The instrument defining the rights of the holders of the 7.125% Debentures due 2096 is Exhibit 4.2 to Form 8-K/A, filed on December 6, 1996, and is hereby incorporated by reference.


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	The instrument defining the rights of the holders of the 6.22% Debentures due 2027 is Exhibit 3 to Form 8-K, filed on August 1, 1997, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 6.50% Debentures due 2028 is Exhibit 2 to Form 8-K, filed on January 8, 1998, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 1.875% Notes due 2022 is Exhibit 2.1 to Form 8-K, filed July 27, 2012, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 3.375% Notes due 2023 is Exhibit 2 to Form 8-K, filed July 31, 2013, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 2.875% Notes due 2025 is Exhibit 3 to Form 8-K, filed November 6, 2013, and are hereby incorporated by reference.
	The instrument defining the rights of the holders of the 3.625% Notes due 2024 is Exhibit 5 to Form 8-K, filed February 11, 2014, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the Floating Rate Notes due 2021 is Exhibit 2 to Form 8-K, filed November 5, 2014, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 1.250% Notes due 2023 is Exhibit 2 to Form 8-K, filed November 25, 2014, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 2.625% Notes due 2022 is Exhibit 2 to Form 8-K, filed on August 4, 2015, and is hereby incorporated by reference.
	The instrument defining the rights of the holders of the 2.875% Notes due 2022 is Exhibit 2 to Form 8-K, filed on November 6, 2015, and is hereby incorporated by reference.
	The instruments defining the rights of the holders of the 3.450% Notes due 2026 and 4.700% Notes due 2046 are Exhibits 4.4 and 4.5 to Form 8-K filed February 18, 2016, and are hereby incorporated by reference.
	The instruments defining the rights of the holders of the 0.500% Notes due 2021, 1.125% Notes due 2024 and 1.750% Notes due 2028 are Exhibits 4.1, 4.2 and 4.3 to Form 8-K filed March 4, 2016, and are hereby incorporated by reference.
	The instrument defining the rights of the holders of the 0.300% Notes due 2026 is Exhibit 4 to Form 8-K filed November 1, 2016, and is hereby incorporated by reference.
	The instruments defining the rights of the holders of the 2.500% Notes due 2022 and 3.300% Notes due 2027 are Exhibits 4.3 and 4.4 to Form 8-K filed January 26, 2017, and are hereby incorporated by reference.
	The instruments defining the rights of the holders of the 0.950% Notes due 2025, and 1.500% Notes due 2029 are Exhibits 4.1 and 4.2 to Form 8-K filed May 22, 2017, and are hereby incorporated by reference.


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	The instruments defining the rights of the holders of the 0.375% Notes due 2023, the 0.875% Notes due 2025, the 1.250% Notes due 2027 and the 1.750% Notes due 2031 are Exhibits 4.1, 4.2, 4.3 and 4.4 to Form 8-K, filed January 30, 2019, and are hereby incorporated by reference.
	The instruments defining the rights of the holders of the Floating Rate Notes due 2021, the 2.850% Notes due 2022, the 3.000% Notes due 2024, the 3.300% Notes due 2026, the 3.500% Notes due 2029, the 4.150% Notes due 2039 and the 4.250% Notes due 2049 are Exhibits 4.1, 4.3, 4.4, 4.5, 4.6, 4.7 and 4.8 to Form 8-K, filed May 14, 2019, and are hereby incorporated by reference.
	The instruments defining the rights of the holders of the 0.300% Notes due 2028, the 0.650% Notes due 2032 and the 1.200% Notes due 2040 are Exhibits 4.1, 4.2 and 4.3 to Form 8-K, filed February 10, 2020, and are hereby incorporated by reference.
	The instruments defining the rights of the holders of the 1.700% Notes due 2027, the 1.950% Notes due 2030, the 2.850% Notes due 2040 and the 2.950% Notes due 2050 are Exhibits 4.1, 4.2, 4.3 and 4.4 to Form 8-K, filed May 6, 2020, and are hereby incorporated by reference.
	Indenture dated as of October 1, 1993 between IBM and The Bank of New York Mellon, (as successor to The Chase Manhattan Bank (National Association)) as Trustee, is Exhibit 4.1 to Form 10-Q for the quarter ended September 30, 2017, and is hereby incorporated by reference.
	First Supplemental Indenture to Indenture dated as of October 1, 1993 between IBM and The Bank of New York Mellon, (as successor to The Chase Manhattan Bank (National Association)) as Trustee, dated as of December 15, 1995, is Exhibit 4.2 to Form 10-Q for the quarter ended September 30, 2017, and is hereby incorporated by reference.
	Description of Securities Registered under Section 12 of the Exchange Act	4.1
(10)	Material contracts
	The IBM 2001 Long-Term Performance Plan, a compensatory plan, contained in Registration Statement No. 333-87708 on Form S-8, as such amended plan was filed as Exhibit 10.1 to Form 10-Q for the quarter ended September 30, 2007, is hereby incorporated by reference.*
	The IBM PWCC Acquisition Long-Term Performance Plan, a compensatory plan, contained in Registration Statement No. 333-102872 on Form S-8, as such amended plan was filed as Exhibit 10.2 to Form 10-Q for the quarter ended September 30, 2007, is hereby incorporated by reference.*
	The IBM Red Hat Acquisition Long-Term Performancce Plan, a compensatory plan, contained in Registration Statement No. 333-232585 of Form S-8, as such amended plan was filed as Exhibit 4.8 to Form S-8 POS filed on December 18, 2020, is hereby incorporated by reference.*
	The IBM 1999 Long-Term Performance Plan, a compensatory plan, contained in Registration Statement No. 333-30424 on Form S-8, as such amended plan was filed as Exhibit 10.3 to Form 10-Q for the quarter ended September 30, 2007, is hereby incorporated by reference.*


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	The IBM 1997 Long-Term Performance Plan, a compensatory plan, contained in Registration Statement No. 333-31305 on Form S-8, as such amended plan was filed as Exhibit 10.4 to Form 10-Q for the quarter ended September 30, 2007, is hereby incorporated by reference.*
	Forms of LTPP equity award agreements for (i) stock options, restricted stock, restricted stock units, cash-settled restricted stock units, SARS and (ii) retention restricted stock unit awards. Such equity award agreement forms and the related terms and conditions document, effective June 9, 2014, were filed under Exhibit 10.1 as Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2014, are hereby incorporated by reference.*
	Form of LTPP equity award agreement for performance share units was filed as Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2015, and is hereby incorporated by reference.*
	Terms and Conditions of LTPP equity award agreements was filed as Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 2016, and is hereby incorporated by reference.*
	Form of LTPP equity award agreement for performance share units and Terms and Conditions of LTPP Equity Awards, effective June 1, 2018, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2018, is hereby incorporated by reference.*
	Forms of LTPP equity award agreements for (i) stock options, restricted stock, restricted stock units, cash-settled restricted stock units, SARS, (ii) performance share units and (iii) retention restricted stock unit awards as well as the Terms and Conditions of LTPP Equity Awards, effective August 15, 2018, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 2018, are hereby incorporated by reference.*
	Forms of equity award agreements for (i) stock options, restricted stock, restricted stock units, cash-settled restricted stock units, SARS, (ii) performance share units and (iii) retention restricted stock unit awards as well as the Terms and Conditions of LTPP Equity Awards, effective October 1, 2018, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended September 30, 2018 are hereby incorporated by reference.*
	Terms and Conditions of LTPP equity award agreements was filed as Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2019, and is hereby incorporated by reference.*
	Forms of equity award agreements for stock options, restricted stock, restricted stock units, cash-settled restricted stock units and SARS, as well as the Terms and Conditions of LTPP Equity Awards, effective July 15, 2019, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 2019, are hereby incorporated by reference.*


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	Forms of LTPP equity award agreements for (i) stock options, restricted stock, restricted stock units, cash-settled restricted stock units, SARS, and (ii) performance share units, as well as the Terms and Conditions of LTPP Equity Awards, effective October 1, 2019, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended September 30, 2019, are hereby incorporated by reference.*
	Form of LTPP equity award agreement for performance share units and the terms and conditions of LTPP Equity Awards, effective December 17, 2019, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-K for the year ended December 31, 2019, are hereby incorporated by reference.*
	Form of LTPP equity award agreement for performance share units and the terms and conditions of LTPP Equity Awards, effective March 2, 2020, in connection with the foregoing award agreements, filed as Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2020, are hereby incorporated by reference.*
	Terms and Conditions of IBM LTPP Equity Awards, effective June 1, 2020, filed as Exhibit 10.1 to Form 10-Q for the quarter ended June 30, 2020, are hereby incorporated by reference.*
	Board of Directors compensatory plans, as described under the caption “General Information—2020 Director Compensation” in IBM’s definitive Proxy Statement to be filed with the Securities and Exchange Commission and delivered to stockholders in connection with the Annual Meeting of Stockholders to be held April 27, 2021, are hereby incorporated by reference.*
	The IBM Non-Employee Directors Stock Option Plan, contained in Registration Statement 33-60227 on Form S-8, is hereby incorporated by reference.*
	The IBM Board of Directors Amended and Restated Deferred Compensation and Equity Award Plan, a compensatory plan, as amended and restated effective January 1, 2014, which was filed as Exhibit 10.1 to Form 10-K for the year ended December 31, 2013, and is hereby incorporated by reference.*
	Amendment No. 1 to the Amended and Restated Deferred Compensation and Equity Award Plan, effective January 30, 2018, which was filed as Exhibit 10.1 to Form 10-K for the year ended December 31, 2017, is hereby incorporated by reference.
	The IBM Supplemental Executive Retention Plan, a compensatory plan, as amended and restated through December 31, 2008, which was filed as Exhibit 10.2 to Form 10-K for the year ended December 31, 2008, is hereby incorporated by reference.*
	Amendment No. 1 to the IBM Supplemental Executive Retention Plan, a compensatory plan, effective December 9, 2014, which was filed as Exhibit 10.1 to Form 10-K for the year ended December 31, 2014, and is hereby incorporated by reference.*
	The IBM Excess 401(k) Plus Plan, a compensatory plan (formerly the IBM Executive Deferred Compensation Plan), as amended and restated through January 1, 2021.*	10.1


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	The IBM 2003 Employees Stock Purchase Plan, contained in Registration Statement 333-104806 on Form S-8, as amended through April 1, 2005, which was filed as Exhibit 10.3 to Form 10-Q for the quarter ended March 31, 2005, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.2 to Form 10-Q for the quarter ended March 31, 2009, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2012, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.2 to Form 10-K for the year ended December 31, 2015, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.3 to Form 10-Q for the quarter ended June 30, 2016, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.1 to Form 10-K for the year ended December 31, 2016, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.3 to Form 10-K for the year ended December 31, 2017, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.2 to Form 10-Q for the quarter ended September 30, 2018, is hereby incorporated by reference.*
	Form of Noncompetition Agreement, filed as Exhibit 10.2 to Form 10-K for the year ended December 31, 2019, is hereby incorporated by reference.*
	Form of Noncompetition Agreement.*	10.2
	Letter Agreement, signed by James Whitehurst and IBM, dated October 28, 2018*	10.3
	Letter Agreement, signed by James Whitehurst and IBM, dated December 12, 2019*	10.4
	Letter Agreement, signed by Erich Clementi and IBM, effective as of April 30, 2019, filed as Exhibit 10.1 to Form 10-Q for the quarter ended March 31, 2019, is hereby incorporated by reference.
	Letter dated December 15, 2020, signed by Virginia M. Rometty and IBM was included as Exhibit 99.2 to the Form 8-K filed December 16, 2020, and is hereby incorporated by reference.*
	Letter dated December 15, 2020, signed by John E. Kelly III and IBM was included as Exhibit 99.1 to the Form 8-K filed December 18, 2020, and is hereby incorporated by reference.*
	$2,500,000,000 364-Day Credit Agreement dated as of July 2, 2020, among International Business Machines Corporation and IBM Credit LLC, as Borrowers, the several lenders and other financial institutions from time to time parties to such agreement, JP Morgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank N.A., Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.1 to Form 8-K dated July 2, 2020, is hereby incorporated by reference.


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
	Amended and Restated $2,500,000,000 Three-Year Credit Agreement dated as of July 19, 2018, among International Business Machines Corporation and IBM Credit LLC, as Borrowers, the Several Lenders from time to time parties to such Agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.2 to Form 8-K dated July 20, 2018, is hereby incorporated by reference.
	Amended and Restated $10,250,000,000 Five-Year Credit Agreement dated as of July 19, 2018, among International Business Machines Corporation, as the Borrower, the Several Lenders from time to time parties to such Agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., and Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.3 to Form 8-K dated July 20, 2018, is hereby incorporated by reference.
	Confirmation of Termination Date Extension to $2,500,000,000 Amended and Restated Three-Year Credit Agreement dated as of July 19, 2018, among International Business Machines Corporation and IBM Credit LLC, as Borrowers, the several lenders from time to time parties to such Agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.2 to Form 8-K dated July 19, 2019, is hereby incorporated by reference.
	Confirmation of Termination Date Extension to $10,250,000,000 Amended and Restated Five-Year Credit Agreement dated as of July 19, 2018, among International Business Machines Corporation, as the Borrower, the several lenders from time to time parties to such Agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., and Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.3 to Form 8-K dated July 19, 2019, is hereby incorporated by reference.
	First Amendment to the $2,500,000,000 Amended and Restated Three-Year Credit Agreement dated as of July 2, 2020, among International Business Machines Corporation and IBM Credit LLC, as Borrowers, the several lenders from time to time parties to such agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.2 to Form 8-K dated July 2, 2020, is hereby incorporated by reference.
	First Amendment to the $10,250,000,000 Amended and Restated Five-Year Credit Agreement dated as of July 2, 2020, among International Business Machines Corporation, as the Borrower, the several lenders from time to time parties to such Agreement, JPMorgan Chase Bank, N.A., as Administrative Agent, BNP Paribas, Citibank, N.A., and Royal Bank of Canada and Mizuho Bank, Ltd., as Syndication Agents, and the Documentation Agents named therein, filed as Exhibit 10.3 to Form 8-K dated July 2, 2020, is hereby incorporated by reference.
(13)	Annual Report to Security Holders**	13
(21)	Subsidiaries of the registrant	21


Reference Number per Item 601 of Regulation S-K	Description of Exhibits	Exhibit Number in this Form 10-K
(23)	Consent of Independent Registered Public Accounting Firm	23.1
(24)	Powers of attorney	24.1
	Resolution of the IBM Board of Directors authorizing execution of this Annual Report on Form 10-K by Powers of Attorney	24.2
(31)	Certification by CEO pursuant to Rule 13A-14(a) or 15D-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	31.1
	Certification by CFO pursuant to Rule 13A-14(a) or 15D-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	31.2
(32)	Certification by CEO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	32.1
	Certification by CFO pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	32.2
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101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document	101
104	Cover Page Interactive Data File - the cover page interactive data file does not appear in the Interactive Data file because its XBRL tags are embedded within the Inline XBRL document.	104

* Management contract or compensatory plan or arrangement.

** The Performance Graph, set forth on page 141 of IBM’s 2020 Annual Report to Stockholders, is deemed to be furnished but not filed.

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