X0508 4 2026-02-21 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0001875415 Fehring Nicolas A. IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 false true false false VP, Controller false Common Stock 2026-02-21 4 M false 396.00 0.00 A 16599.124 D Common Stock 2026-02-21 4 F false 201.00 256.42 D 16398.124 D Common Stock 2026-02-21 4 M false 540.00 0.00 A 16938.124 D Common Stock 2026-02-21 4 F false 274.00 256.42 D 16664.124 D Common Stock 2026-02-21 4 M false 632.00 0.00 A 17296.124 D Common Stock 2026-02-21 4 F false 320.00 256.42 D 16976.124 D Rst. Stock Unit 0.00 2026-02-21 4 M false 396.00 0.00 D Common Stock 396.00 0.00 D Rst. Stock Unit 0.00 2026-02-21 4 M false 540.00 0.00 D Common Stock 540.00 541.00 D Rst. Stock Unit 0.00 2026-02-21 4 M false 632.00 0.00 D Common Stock 632.00 1264.00 D On 2/21/22, the reporting person was granted 1,578 RSUs, 394 of which vested on 2/21/23, 394 of which vested on 2/21/24, 394 of which vested on 2/21/25 and 396 of which vested on 2/21/26. These units were payable in cash or the company's common stock upon the lapse of the restrictions on the transaction date shown. Release of restricted stock units. On 2/21/23, the reporting person was granted 2,162 RSUs, 540 of which vested on 2/21/24, 541 of which vested on 2/21/25, 540 of which vested on 2/21/26 and 541 of which will vest on 2/21/27. On 2/21/24, the reporting person was granted 2,527 RSUs, 631 of which vested on 2/21/25, 632 of which vested on 2/21/26, 632 of which will vest on 2/21/27, and 632 of which will vest on 2/21/28. L. Mallardi on behalf of N. A. Fehring 2026-02-23