InsiderTrades

Form 4 for COLB COLUMBIA BANKING SYSTEM, INC.

Accepted 2026-03-02 00:00:00 ET · period of report 2026-03-01 · accession 0001689701-26-000002 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
2026-03-02 2026-03-01 COLB Nixon Torran B Senior Executive VP F - Tax $28.45 -2,980 102.7K -3% -$84.8K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-03-01 F D 2,980 $28.45 102,710 D — —