Frank Namdar - 01 Mar 2024 Form 4 Insider Report for COLUMBIA BANKING SYSTEM, INC. (COLB)

Role: Chief Credit Officer
Signature: /s/ Lisa M. White, Attorney-in-fact
Issuer symbol: COLB
Transactions as of: 01 Mar 2024
Net transactions value: +$399,948
Form type: 4
Filing time: 04 Mar 2024, 19:59:51 UTC
Previous filing: 01 Mar 2024
Next filing: 12 Mar 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	COLB	Common Stock	Award	$199,983	+11,191	+41%	$17.87	38,754	01 Mar 2024	Direct	F1
holding	COLB	Common Stock						3,153	01 Mar 2024	by 401(k)

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	Performance Restricted Stock Unit	Award	$99,983	+5,595		$17.87	5,595	01 Mar 2024	Common Stock	5,595		Direct	F2
transaction	COLB	Performance Restricted Stock Unit	Award	$99,983	+5,595	+100%	$17.87	11,190	01 Mar 2024	Common Stock	5,595		Direct	F3
holding	COLB	Deferred Compensation Phantom Stock						2,868	01 Mar 2024	Common	2,868		Deferred Compensation	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 03/01/2024. Beginning on the first anniversary of the grant date, the grant will vest 33.33% per year for three years.
F2	Performance restricted stock units granted 03/01/2024. The grant will vest approximately three years following the grant date based on the issuer's relative total shareholder return performance for fiscal years 2024-2026 compared to a Compensation Committee approved group of peers.
F3	Performance restricted stock units granted 03/01/2024. 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 2024-2026 compared to a Compensation Committee approved group of peers.
F4	The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be paid in cash in accordance with the terms of the deferred compensation plan following end of the reporting person's employment with the Registrant.