Torran B. Nixon - 20 Jan 2026 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Role
Senior Executive VP
Signature
/s/ Andrea M. Newburn, Attorney-in-fact
Issuer symbol
COLB
Transactions as of
20 Jan 2026
Net transactions value
-$109,800
Form type
4
Filing time
22 Jan 2026, 18:08:39 UTC
Previous filing
05 Mar 2025
Next filing
04 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nixon Torran B Senior Executive VP C/O COLUMBIA BANKING SYSTEM, INC., 1301 A STREET, TACOMA /s/ Andrea M. Newburn, Attorney-in-fact 22 Jan 2026 0001689701

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction COLB Common Stock Disposed to Issuer $0 -1,717 -1.6% $0.000000 103,152 20 Jan 2026 Direct F1
transaction COLB Common Stock Tax liability $109,800 -3,873 -3.8% $28.35 99,279 20 Jan 2026 Direct F2
holding COLB Common Stock 3,650 20 Jan 2026 by Nixon Family Trust
holding COLB Common Stock 1,855 20 Jan 2026 by 401(k)
* 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.