X0508 4 2025-02-18 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0002026599 Robinson Anne IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 false true false false Senior Vice President false Rst. Stock Unit 0.00 2025-02-18 4 A false 6889.00 0.00 A Common Stock 6889.00 6889.00 D Emp. Stock Option (right to buy) 261.89 2025-02-18 4 A false 27553.00 0.00 A 2026-02-18 2035-02-17 Common Stock 27553.00 27553.00 D Upon lapse of the restrictions, these units are payable in cash or the company's common stock. The restrictions lapse for 1,722 of these units on February 18, 2026, 1,722 of these units on February 18, 2027, 1,722 of these units on February 18, 2028, and 1,723 of these units on February 18, 2029. These derivative securities vest in four equal annual installments, the first vesting being on the date exercisable shown. All expire on the expiration date shown above. L. Mallardi on behalf of A. Robinson 2025-02-19