Form 4 Tracker
COLUMBIA BANKING SYSTEM, INC.
COLB

24 insider filings · Latest: May 14, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Mar 13, 2026Mar 17 8:31 PMBrock LakelyEVP, Chief Accounting Officer
Sale
211$26.23$5.5K11,104(D)

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Mar 13, 2026Mar 17 8:26 PMKumi Yamamoto BaruffiEVP General Counsel, Corp Sec
Sale
937$26.23$24.6K53,715(D)

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Mar 16, 2026Mar 17 8:50 PMMACHUCA LUISDirector
Grant/Award
65948,403(I)

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Mar 13, 2026Mar 17 8:48 PMClint SteinDirector, Chair, CEO, President
Option Exercise
18,171166,984(D)

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Mar 13, 2026Mar 17 8:45 PMAndrew H OgnallEVP Chief Risk Officer
Option Exercise
2,38153,026(D)

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Mar 13, 2026Mar 17 8:43 PMTorran B NixonSenior Executive VP
Option Exercise
5,01349,052(D)

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Mar 13, 2026Mar 17 8:39 PMFrank NamdarEVP Chief Credit Officer
Option Exercise
2,82013,640(D)

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Mar 13, 2026Mar 17 8:35 PMDevine David MooreEVP Chief Marketing Officer
Option Exercise
9404,679(D)

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Mar 13, 2026Mar 17 8:33 PMChristopher MerrywellSenior Executive VP
Option Exercise
5,01351,291(D)

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Mar 13, 2026Mar 17 8:31 PMBrock LakelyEVP, Chief Accounting Officer
Option Exercise
8469,810(D)

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Mar 13, 2026Mar 17 8:27 PMAaron James DeerEVP Chief Strategy/Innov Offcr
Option Exercise
1,5677,133(D)

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Mar 13, 2026Mar 17 8:26 PMKumi Yamamoto BaruffiEVP General Counsel, Corp Sec
Option Exercise
2,38113,083(D)

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Mar 13, 2026Mar 17 8:24 PMDrew K AndersonEVP Chief Admin Officer
Option Exercise
2,50650,607(D)

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