X0508 4 2024-06-08 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0001628938 BROWDY MICHELLE H IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 false true false false Senior Vice President false Common Stock 2024-06-08 4 M false 3231.00 0.00 A 124759.322 D Common Stock 2024-06-08 4 F false 1651.00 169.71 D 123108.322 D Common Stock 2024-06-08 4 M false 2972.00 0.00 A 126080.322 D Common Stock 2024-06-08 4 F false 1518.00 169.71 D 124562.322 D Rst. Stock Unit 0.00 2024-06-08 4 M false 3231.00 0.00 D Common Stock 3231.00 0.00 D Rst. Stock Unit 0.00 2024-06-08 4 M false 2972.00 0.00 D Common Stock 2972.00 2973.00 D On 06/08/20, the reporting person was granted 12,502 RSUs, 3,125 of which vested on 06/08/21, 3,125 of which vested on 06/08/22, 3,125 of which vested on 06/08/23, and 3,127 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 11,508 RSUs, 2,877 of which vested on 06/08/22, 2,877 of which vested on 06/08/23, 2,877 of which vested on 06/08/24, and 2,877 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 M. Browdy 2024-06-11