Anderson Drew K 4

What Happened

• Drew K. Anderson, EVP & Chief Administrative Officer of Columbia Banking System, Inc. (COLB), had two equity-related dispositions reported on Jan 20, 2026: 390 performance restricted stock units were forfeited to the issuer (reported at $0.00), and 1,114 shares were withheld to satisfy tax obligations at a withholding price of $28.35 per share, totaling $31,582. These were not open-market sales.

Key Details

• Transaction dates: January 20, 2026; Form 4 filed January 22, 2026 (appears timely).
• Disposition to issuer (code D): 390 shares at $0.00 — forfeiture of performance restricted stock units (per F1).
• Tax withholding (code F): 1,114 shares withheld at $28.35 per share = $31,582 to satisfy tax withholding on vested restricted stock units (per F2).
• Shares owned after transaction: not specified in the filing.
• Footnotes: F1 states the 390 shares were forfeited because the issuer’s total shareholder return target was not met for PRSUs granted Feb 21, 2023; F2 confirms share withholding to cover tax liabilities on vested RSUs.

Context

• These transactions reflect administrative adjustments (forfeiture and tax withholding) tied to equity awards and vesting, not discretionary open-market selling. Such transactions are routine and generally do not signal the same intent as an officer purchasing or selling stock in the market.