IBM

Item 9.01. Financial Statements and Exhibits. (d) Exhibits Exhibit No. Description of Exhibit 1.1 Underwriting Agreement dated August 10, 2026 among International Business Machines Corporation and CIBC World Markets Inc., RBC Dominion Securities Inc., Scotia Capital Inc. and TD Securities Inc., as the Representatives of the Underwriters 4.1 Form of 4.100% Note due 2030 4.2 Form of 4.750% Note due 2034 5.1 Opinion of Jane P. Edwards, Vice President, Assistant General Counsel and Secretary regarding the Notes 23.1 Consent of Jane P. Edwards, Vice President, Assistant General Counsel and Secretary (included in Exhibit 5.1) 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. 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: August 14, 2026 By: /s/ Brien Wierzchowski Brien Wierzchowski Vice President and Treasurer