Cort L. O'haver - Feb 25, 2025 Form 4/A - Amendment Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Signature
/s/ Lisa M. White, Attorney-in-fact
Stock symbol
COLB
Transactions as of
Feb 25, 2025
Transactions value $
$2,499,948
Form type
4/A - Amendment
Date filed
3/14/2025, 09:46 PM
Date Of Original Report
Feb 26, 2025
Previous filing
Feb 18, 2025
Next filing
Mar 4, 2025

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction COLB Restricted Stock Unit Award $1M +37.6K $26.60 37.6K Feb 25, 2025 Common Stock 37.6K Direct F1, F2
transaction COLB Performance Restricted Stock Unit Award $750K +28.2K +33.59% $26.60 112K Feb 25, 2025 Common Stock 28.2K Direct F2, F3
transaction COLB Performance Restricted Stock Unit Award $750K +28.2K +25.14% $26.60 140K Feb 25, 2025 Common Stock 28.2K Direct F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units granted 02/25/2025. The grant will vest 33.33% per year over three years.
F2 The Form 4 filed February 26, 2025, inadvertently included incorrect amounts for the number of restricted stock units and performance stock units. This amendment reports the correct amounts.
F3 Performance restricted stock units granted 02/25/2025. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.
F4 Performance restricted stock units granted 02/25/2025. The grant will vest approximately three years following the grant date based on the issuer's relative return on tangible common equity for fiscal years 2025-2027 compared to a Compensation Committee approved group of peers.