X0306 4 2023-02-09 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 Phantom Stock Unit 0.00 2023-02-09 4 A false 219.00 0.00 A Common Stock 219.00 17969.00 D Phantom stock units convert to the cash value of the company's common stock on a one-for-one basis. Acquisition of phantom stock units under the IBM Excess 401(k) Plus Plan. Distribution of phantom stock units under the IBM Excess 401(k) Plus Plan is deferred until separation from the company. The reporting person may transfer these phantom stock units into an alternative investment account under such plan. D. Glowienka on behalf of A. Krishna 2023-02-13