X0508 4 2024-06-08 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 Common Stock 2024-06-08 4 M false 10091.00 0.00 A 296891.7006 D Common Stock 2024-06-08 4 F false 5023.00 169.71 D 291868.7006 D Common Stock 2024-06-08 4 M false 8604.00 0.00 A 300472.7006 D Common Stock 2024-06-08 4 F false 4293.00 169.71 D 296179.7006 D Rst. Stock Unit 0.00 2024-06-08 4 M false 10091.00 0.00 D Common Stock 10091.00 0.00 D Rst. Stock Unit 0.00 2024-06-08 4 M false 8604.00 0.00 D Common Stock 8604.00 8606.00 D On 06/08/20, the reporting person was granted 39,068 RSUs, 9,767 of which vested on 06/08/21, 9,767 of which vested on 06/08/22, 9,767 of which vested on 06/08/23, and 9,767 of which vested on 06/08/24. 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. On 06/08/21, the reporting person was granted 33,313 RSUs, 8,328 of which vested on 06/08/22, 8,328 of which vested on 06/08/23, 8,328 of which vested on 06/08/24, and 8,329 of which will vest on 06/08/25. 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. L. Mallardi on behalf of A. Krishna 2024-06-11