X0508 4 2025-02-18 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0001629898 KRISHNA ARVIND IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 true true false false Chairman and CEO false Rst. Stock Unit 0.00 2025-02-18 4 A false 22659.00 0.00 A Common Stock 22659.00 22659.00 D Emp. Stock Option (right to buy) 261.89 2025-02-18 4 A false 90634.00 0.00 A 2026-02-18 2035-02-17 Common Stock 90634.00 90634.00 D Upon lapse of the restrictions, these units are payable in cash or the company's common stock. The restrictions lapse for 5,664 of these units on February 18, 2026, 5,665 of these units on February 18, 2027, 5,665 of these units on February 18, 2028, and 5,665 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. Krishna 2025-02-19