January 30, 2026 · Form 4 insider transaction
GARDNER STEVEN R sold 13,725 shares of Columbia Banking System, Inc. at $29.43 per share, a transaction worth $403.9K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 4 days after the transaction.
Shares sold to satisfy mandatory liquidation requirements of the reporting person's self-directed 401(k) plan in connection with a rollover.