BARUFFI KUMI YAMAMOTO sold COLB

March 1, 2026 · Form 4 insider transaction

BARUFFI KUMI YAMAMOTO sold 1,799 shares of Columbia Banking System, Inc. at $28.45 per share, a transaction worth $51.2K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 1 day after the transaction.