InsiderTrades

Form 4 for COLB COLUMBIA BANKING SYSTEM, INC.

Accepted 2026-02-03 00:00:00 ET · period of report 2026-01-30 · accession 0000887343-26-000024 · 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
I 2026-02-03 2026-01-30 COLB GARDNER STEVEN R Dir S - Sale $29.43 -13.7K 0 -100% -$403.9K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-01-30 S D 13,725 $29.43 0 I by 401(k) — — (F1) Shares sold to satisfy mandatory liquidation requirements of the reporting person's self-directed 401(k) plan in connection with a rollover.