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IBM International Business Machines Corporation

Insider figures are trailing 90 days, open-market Form 4 only. Institutional figures are the latest reported quarter. These windows are not simultaneous.

-$5.8M net selling - trailing 90 days

0 buyers - 1 unique sellers

Historical context: No open-market activity in Sep 2026 — insiders traded in 6 of the last 24 months

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

open-market Form 4 only - grants, exercises, tax withholding excluded. ~ derived from SEC-reported shares x price.

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$10.0M$5.0M$0-$5.0M-$10.0M2024-10 $02024-11 -$578K2024-12 $02025-01 $02025-02 $299K2025-03 -$6.7M2025-04 $02025-05 $02025-06 $02025-07 $02025-08 $02025-09 $02025-10 $02025-11 $02025-12 $02026-01 $304K2026-02 $113K2026-03 $02026-04 $02026-05 $02026-06 $02026-07 $02026-08 -$5.8M2026-09 $0Oct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Who is responsible

Insider Role Net activity Rows
Thomas Robert David Senior Vice President -~$5.8M 1

Transactions

Date Insider Role Type Shares Price Value
August 26, 2026 Thomas Robert David Senior Vice President S -25000 230.3235 ~$5.8M
February 25, 2026 Miebach Michael — P 434 233.3261 ~$0.1M
February 25, 2026 HOWARD MICHELLE J — P 50 237.8293 ~$12K
January 30, 2026 FARR DAVID N — P 1000 304 ~$0.3M
March 3, 2025 Thomas Robert David Senior Vice President S -26543 253.0098 ~$6.7M
February 28, 2025 FARR DAVID N — P 1200 249 ~$0.3M
November 13, 2024 ZOLLAR ALFRED W — P 936 210.6185 ~$0.2M
November 8, 2024 LAMOREAUX NICKLE JACLYN Senior Vice President S -3600 215.202 ~$0.8M