Columbia Banking (COLB) EVP gains stock from performance vesting

Rhea-AI Filing Summary

Columbia Banking System Senior Executive VP Christopher Merrywell reported equity compensation activity in the company’s common stock. On February 2, 2026, he received 12,576 shares at $29.69 per share upon vesting of performance restricted stock units tied to relative return on tangible common equity for fiscal years 2023–2025.

On the same date, 4,949 shares at $29.69 per share were withheld to cover tax obligations related to this vesting. After these transactions, Merrywell directly owned 45,963 shares of Columbia Banking common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Merrywell Christopher

(Last) (First) (Middle)

C/O COLUMBIA BANKING SYSTEM, INC.

1301 A STREET

(Street)

TACOMA WA 98402

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
COLUMBIA BANKING SYSTEM, INC. [ COLB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Senior Executive VP

3. Date of Earliest Transaction (Month/Day/Year)
02/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/02/2026		A		12,576(1)	A	$29.69	50,912	D
Common Stock	02/02/2026		F		4,949(2)	D	$29.69	45,963	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Shares granted pursuant to the terms of the performance restricted stock units granted on February 21, 2023, which vested on February 2, 2026 based on to the issuer's relative return on tangible common equity for fiscal years 2023-2025 compared to a Compensation Committee approved group of peers.

2. Represents withholding of shares of common stock to satisfy the reporting person's tax withholding obligations in connection with the shares granted pursuant to the terms of the performance restricted stock units vesting.

Remarks:

	/s/ Andrea M. Newburn, Attorney-in-fact	02/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider activity did COLB executive Christopher Merrywell report?

Christopher Merrywell reported equity compensation activity involving Columbia Banking common stock. He received 12,576 shares upon vesting of performance restricted stock units and had 4,949 shares withheld for taxes, resulting in direct ownership of 45,963 shares after the reported transactions.

How many COLB shares did Christopher Merrywell acquire on February 2, 2026?

He acquired 12,576 shares of Columbia Banking common stock. These shares were granted when performance restricted stock units vested, based on the company’s relative return on tangible common equity over fiscal years 2023–2025 versus a Compensation Committee–approved peer group.

Why were 4,949 COLB shares withheld from Christopher Merrywell?

The 4,949 Columbia Banking shares were withheld to satisfy Merrywell’s tax withholding obligations. This withholding was directly related to the shares delivered upon vesting of his performance restricted stock units, rather than a discretionary sale of shares in the open market.

How many Columbia Banking (COLB) shares does Christopher Merrywell now hold?

Following the reported transactions, Merrywell directly owns 45,963 shares of Columbia Banking common stock. This figure reflects the shares received from vested performance restricted stock units, net of shares withheld to cover his related tax obligations on February 2, 2026.

What performance measure triggered Christopher Merrywell’s COLB stock vesting?

The vesting was based on Columbia Banking’s relative return on tangible common equity. Performance was measured over fiscal years 2023–2025 against a Compensation Committee–approved group of peers, determining the shares ultimately delivered under the performance restricted stock units.