Andrew H. Ognall - 31 Dec 2025 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Role
EVP Chief Risk Officer
Signature
/s/ Andrea M. Newburn, Attorney-in-fact
Issuer symbol
COLB
Transactions as of
31 Dec 2025
Net transactions value
+$600,003
Form type
4
Filing time
31 Dec 2025, 18:13:58 UTC
Previous filing
04 Mar 2025
Next filing
22 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
OGNALL ANDREW H EVP Chief Risk Officer C/O COLUMBIA BANKING SYSTEM, INC., 1301 A STREET, TACOMA /s/ Andrea M. Newburn, Attorney-in-fact 31 Dec 2025 0001606248

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 $600,003 +21,467 +83% $27.95 47,405 31 Dec 2025 Common Stock 21,467 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units granted 12/31/2025. The grant will vest 100% on or about December 31, 2028.