IBM

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2025-12-31 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: INTERNATIONAL BUSINESS MACHINES CORP (IBM) CIK: 0000051143 --- Reporting Owner --- Name: MCNABB FREDERICK WILLIAM III CIK: 0001731814 Role: Director --- Derivative Transactions --- [Transaction #1] Security: Promised Fee Share Date: 2025-12-31 | Code: A (Grant or award) Shares: +309 | Price: $296.21 Shares Owned After: 15,613 | Ownership: D (Direct) Footnotes: [F1] Promised Fee Shares under the IBM Board of Directors Deferred Compensation and Equity Award Plan are paid out after retirement in the company's common stock or cash. [F2] Deferral of fees into Promised Fee Shares under the terms of the IBM Board of Directors Deferred Compensation and Equity Award Plan. [F3] Distribution of Promised Fee Shares under the IBM Board of Directors Deferred Compensation and Equity Award Plan is deferred until retirement. [F3] Distribution of Promised Fee Shares under the IBM Board of Directors Deferred Compensation and Equity Award Plan is deferred until retirement. --- Footnotes (Complete Index) --- F1: Promised Fee Shares under the IBM Board of Directors Deferred Compensation and Equity Award Plan are paid out after retirement in the company's common stock or cash. F2: Deferral of fees into Promised Fee Shares under the terms of the IBM Board of Directors Deferred Compensation and Equity Award Plan. F3: Distribution of Promised Fee Shares under the IBM Board of Directors Deferred Compensation and Equity Award Plan is deferred until retirement. --- Signature --- /s/ L. Mallardi on behalf of F. W. McNabb III (2026-01-02)