Clint Stein - 20 Jan 2026 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Role
Chair, President, CEO, Director
Signature
/s/ Andrea M. Newburn, Attorney-in-fact
Issuer symbol
COLB
Transactions as of
20 Jan 2026
Net transactions value
-$375,638
Form type
4
Filing time
22 Jan 2026, 18:06:04 UTC
Previous filing
04 Mar 2025
Next filing
04 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Stein Clint Chair, President, CEO, Director C/O COLUMBIA BANKING SYSTEM, INC., 1301 A STREET, TACOMA /s/ Andrea M. Newburn, Attorney-in-fact 22 Jan 2026 0001550429

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction COLB Common Stock Disposed to Issuer $0 -3,588 -2.5% $0.000000 139,373 20 Jan 2026 Direct F1
transaction COLB Common Stock Tax liability $215,885 -7,615 -5.5% $28.35 131,758 20 Jan 2026 Direct F2
transaction COLB Common Stock Disposed to Issuer $0 -2,727 -2.1% $0.000000 129,031 20 Jan 2026 Direct F3
transaction COLB Common Stock Tax liability $159,752 -5,635 -4.4% $28.35 123,396 20 Jan 2026 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Shares forfeited pursuant to the terms of the performance restricted stock units granted on February 21, 2023 and reported on the reporting person's Form 4 filed on February 21, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.
F2 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.
F3 Shares forfeited pursuant to the terms of the performance restricted stock units granted on March 14, 2023 and reported on the reporting person's Form 4 filed on March 15, 2023 (in accordance with Rule 16b-3(e)) due to the issuer's total shareholder return performance target not being met at target.