BARUFFI KUMI YAMAMOTO sold COLB
January 20, 2026 · Form 4 insider transaction
BARUFFI KUMI YAMAMOTO sold 1,508 shares of Columbia Banking System, Inc. at $28.35 per share, a transaction worth $42.8K. The trade was recorded as shares withheld for taxes and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
1,508
Price
$28.35
Total value
$42.8K
InsiderBARUFFI KUMI YAMAMOTO
Role—
SecurityCommon Stock
Transaction codeF: Shares withheld for taxes
Transaction dateJanuary 20, 2026
Filing dateJanuary 22, 2026
Shares owned after52,123
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the vesting of previously issued restricted stock units.