Steven R. Gardner - 30 Jan 2026 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Role
Director
Signature
/s/ Andrea M. Newburn, Attorney-in-fact
Issuer symbol
COLB
Transactions as of
30 Jan 2026
Net transactions value
-$403,927
Form type
4
Filing time
03 Feb 2026, 17:13:20 UTC
Previous filing
03 Sep 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
GARDNER STEVEN R Director C/O COLUMBIA BANKING SYSTEM, INC., 1301 A STREET, TACOMA /s/ Andrea M. Newburn, Attorney-in-fact 03 Feb 2026 0001267342

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction COLB Common Stock Sale $403,927 -13,725 -100% $29.43 0 30 Jan 2026 by 401(k) F1
holding COLB Common Stock 570,370 30 Jan 2026 by family trust F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares sold to satisfy mandatory liquidation requirements of the reporting person's self-directed 401(k) plan in connection with a rollover.
F2 232,150 shares of the Issuer's common stock were previously inadvertently reported as directly owned by the reporting person and are indirectly beneficially owned by the reporting person via family trust.