X0306 4 2019-06-07 false 0000051143 INTERNATIONAL BUSINESS MACHINES CORP IBM 0001594465 Schroeter Martin J IBM CORPORATION ONE NEW ORCHARD ROAD ARMONK NY 10504 false true false false Senior Vice President Common Stock 2019-06-08 4 M false 3017.00 0.00 A 84825.8848 D Common Stock 2019-06-08 4 F false 1478.00 133.47 D 83347.8848 D Common Stock 2019-06-08 4 M false 2750.00 0.00 A 86097.8848 D Common Stock 2019-06-08 4 F false 1347.00 133.47 D 84750.8848 D Common Stock 2019-06-08 4 M false 3281.00 0.00 A 88031.8848 D Common Stock 2019-06-08 4 F false 1607.00 133.47 D 86424.8848 D Rst. Stock Unit 0.00 2019-06-07 4 A false 24125.00 0.00 A Common Stock 24125.00 24125.00 D Rst. Stock Unit 0.00 2019-06-08 4 M false 3017.00 0.00 D Common Stock 3017.00 3018.00 D Rst. Stock Unit 0.00 2019-06-08 4 M false 2750.00 0.00 D Common Stock 2750.00 5500.00 D Rst. Stock Unit 0.00 2019-06-08 4 M false 3281.00 0.00 D Common Stock 3281.00 9844.00 D Upon lapse of the restrictions, these units are payable in cash or the company's common stock. The restrictions lapse for 6,031 of these units on 06/07/2020, 6,031 of these units on 06/07/2021, 6,031 of these units on 06/07/2022, and 6,032 of these units on 06/07/2023. 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. M. Clemens on behalf of M. Schroeter 2019-06-11