X0508 4 2024-02-11 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0002005007 Thomas Robert David IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 false true false false Senior Vice President false Common Stock 2024-02-11 4 M false 22068.00 0.00 A 66980.301 D Common Stock 2024-02-11 4 F false 10346.00 185.515 D 56634.301 D Rst. Stock Unit 0.00 2024-02-11 4 M false 22068.00 0.00 D Common Stock 22068.00 14714.00 D On 02/11/2020, the reporting person was granted 35,601 RSUs, 21,360 of which vested 02/11/24, and 14,241 of which will vest on 02/11/25. In connection with the spin-off of Kyndryl Holdings, Inc. on November 3, 2021, unvested Issuer restricted stock units were adjusted to reflect additional restricted stock units, which additional restricted stock units are included in the figures above. 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. L. Mallardi on behalf of Robert Thomas 2024-02-13