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Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 New York ( State of Incorporation ) One New Orchard Road INTERNATIONAL BUSINESS MACHINES CORPORATION ( Exact name of registrant as specified in its charter ) Armonk , New York ( Address of principal executive offices ) Title of each class Capital stock , par value $ .20 per share FORM 10 - K ANNUAL REPORT pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 FOR THE YEAR ENDED DECEMBER 31 , 2020 0.500 % Notes due 2021 2.625 % Notes due 2022 1.250 % Notes due 2023 0.375 % Notes due 2023 1.125 % Notes due 2024 2.875 % Notes due 2025 0.950 % Notes due 2025 0.875 % Notes due 2025 0.300 % Notes due 2026 1.250 % Notes due 2027 0.300 % Notes due 2028 1.750 % Notes due 2028 1.500 % Notes due 2029 1.750 % Notes due 2031 0.650 % Notes due 2032 1.200 % Notes due 2040 7.00 % Debentures due 2025 6.22 % Debentures due 2027 6.50 % Debentures due 2028 7.00 % Debentures due 2045 7.125 % Debentures due 2096 1-2360 ( Commission file number ) Large accelerated filer > Non - accelerated filer 914-499-1900 ( Registrant's telephone number ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol IBM IBM 21B IBM 22A IBM 23A IBM 23B IBM 24A IBM 25A IBM 25B IBM 25C IBM 26B IBM 27B IBM 28B IBM 28A IBM 29 IBM 31 IBM 32A IBM 40 IBM 25 13-0871985 ( IRS Employer Identification Number ) IBM 27 IBM 28 IBM 45 IBM 96 10504 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange NYSE Chicago New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange Securities registered pursuant to Section 12 ( g ) of the Act : None . Indicate by check mark if the registrant is a well - known seasoned issuer as defined in Rule 405 of the Securities Act . Yes Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No No 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 No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files ) . Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , a smaller reporting company , or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Exchange Act Rule 12b - 2 ) . Yes No The aggregate market value of the voting stock held by non - affiliates of the registrant as of the last business day of the registrant's most recently completed second fiscal quarter was $ 107.5 billion . The registrant had 893,594,090 shares of common stock outstanding at February 10 , 2021 . Documents incorporated by reference : Portions of IBM's Annual Report to Stockholders for the year ended December 31 , 2020 are incorporated by reference into Parts I , II and IV of this Form 10 - K . Portions of 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 incorporated by reference into Part III of this Form 10 - K .