Reg FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM  8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report: March 31, 2022 (Date of earliest event reported) INTERNATIONAL BUSINESS MACHINES CORPORATION (Exact name of registrant as specified in its charter) ​ ​ ​ ​ ​ New York ​ 1-2360 ​ 13-0871985 (State of Incorporation) ​ (Commission File Number) ​ (IRS employer Identification No.) ​ ​ ​ ​ ​ One New Orchard Road Armonk , New York ​ ​ 10504 (Address of principal executive offices) ​ (Zip Code) ​ 914 - 499-1900 (Registrant’s telephone number) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ​ ​ ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​ ​ ​ ​ ​ Title of each class ​ Trading symbol(s) ​ Name of each exchange on which registered Capital stock, par value $.20 per share ​ IBM ​ New York Stock Exchange ​ ​ ​ ​ NYSE Chicago 2.625% Notes due 2022 ​ IBM 22A ​ New York Stock Exchange 1.250% Notes due 2023 ​ IBM 23A ​ New York Stock Exchange 0.375% Notes due 2023 ​ IBM 23B ​ New York Stock Exchange 1.125% Notes due 2024 ​ IBM 24A ​ New York Stock Exchange 2.875% Notes due 2025 ​ IBM 25A ​ New York Stock Exchange 0.950% Notes due 2025 ​ IBM 25B ​ New York Stock Exchange 0.875% Notes due 2025 ​ IBM 25C ​ New York Stock Exchange 0.300% Notes due 2026 ​ IBM 26B ​ New York Stock Exchange 1.250% Notes due 2027 ​ IBM 27B ​ New York Stock Exchange 0.300% Notes due 2028 ​ IBM 28B ​ New York Stock Exchange 1.750% Notes due 2028 ​ IBM 28A ​ New York Stock Exchange 1.500% Notes due 2029 ​ IBM 29 ​ New York Stock Exchange 0.875% Notes due 2030 ​ IBM 30 ​ New York Stock Exchange 1.750% Notes due 2031 ​ IBM 31 ​ New York Stock Exchange 0.650% Notes due 2032 ​ IBM 32A ​ New York Stock Exchange 1.250% Notes due 2034 ​ IBM 34 ​ New York Stock Exchange 1.200% Notes due 2040 ​ IBM 40 ​ New York Stock Exchange 7.00% Debentures due 2025 ​ IBM 25 ​ New York Stock Exchange 6.22% Debentures due 2027 ​ IBM 27 ​ New York Stock Exchange 6.50% Debentures due 2028 ​ IBM 28 ​ New York Stock Exchange 7.00% Debentures due 2045 ​ IBM 45 ​ New York Stock Exchange 7.125% Debentures due 2096 ​ IBM 96 ​ New York Stock Exchange ​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). 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.  ☐ ​ ​ ​ ​ ​ ​ ​ Item 7.01. Regulation FD Disclosure. On March 31, 2022, IBM announced that it is updating its Software segment to reflect the planned divestiture of its healthcare data and analytics assets, with no change to IBM consolidated results. Exhibit 99.1 to this Form 8-K contains recast historical financial information for the Software segment that the company has posted on its Investor Relations website (www.ibm.com/investor/). ​ The information in this Item 7.01, including Exhibit 99.1, is being furnished with the Commission and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934. ​ Item 9.01. Financial Statements and Exhibits. (d) Exhibits The following exhibit is being furnished as part of this report: ​ ​ ​ Exhibit No. ​ Description of Exhibit 99.1 ​ Investor Relations Article, dated March 31, 2022 ​ The following exhibit is being filed as part of this report: ​ ​ ​ Exhibit No. ​ Description of Exhibit 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 ​ IBM’s web site (www.ibm.com) contains a significant amount of information about IBM, including financial and other information for investors (www.ibm.com/investor/). IBM encourages investors to visit its various web sites from time to time, as information is updated and new information is posted. ​ 2 SIGNATURE 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, hereunto duly authorized. ​ ​ ​ Date: March 31, 2022 ​ ​ ​ ​ ​ ​ ​ By: /s/ Robert F. Del Bene ​ ​ Robert F. Del Bene ​ ​ Vice President and Controller ​ ​ ​ ​ ​ ​ ​ ​ ​ 3