COLB risk chief awarded 8,002 restricted stock units

OGNALL ANDREW H reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

OGNALL ANDREW H reported acquisition or exercise transactions in this Form 4 filing.

Columbia Banking System EVP Chief Risk Officer Andrew H. Ognall received a grant of 8,002 restricted stock units on February 18, 2026. The award is scheduled to vest in roughly equal installments of 33.33% per year over three years, aligning part of his compensation with future company performance.

Insider Trade Summary

Grant/Award: 8,002 shares

Grant/Award 1 txn

Insider OGNALL ANDREW H

Role EVP Chief Risk Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	8,002	$31.24	$250K

Holdings After Transaction: Restricted Stock Unit — 55,407 contracts (Direct)

Footnotes (1)

1. F1. Restricted stock units granted 02/18/2026. The grant will vest 33.33% per year over three years.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did COLB disclose for Andrew H. Ognall?

Columbia Banking System disclosed that EVP Chief Risk Officer Andrew H. Ognall received 8,002 restricted stock units. The grant reflects equity-based compensation and is structured to vest in stages, tying part of his pay to the company’s long-term performance and share value.

How many restricted stock units were granted to COLB executive Andrew H. Ognall?

Andrew H. Ognall was granted 8,002 restricted stock units. These units represent a right to receive shares in the future, subject to vesting conditions, and are part of his overall compensation package as Executive Vice President and Chief Risk Officer at Columbia Banking System.

When do Andrew H. Ognall’s COLB restricted stock units vest?

The restricted stock units granted to Andrew H. Ognall vest over three years. The filing states that 33.33% of the award will vest each year, creating a multi-year incentive structure that encourages ongoing service and alignment with Columbia Banking System’s long-term goals.

What is the vesting structure of the COLB restricted stock unit grant?

The vesting structure is annual over three years at 33.33% per year. This means the 8,002 restricted stock units do not become fully deliverable immediately, but instead vest in approximately equal tranches, promoting retention and longer-term focus for the executive recipient.

How many Columbia Banking System units does Andrew H. Ognall own after this grant?

After the grant, Andrew H. Ognall beneficially owns 55,407 units of the reported derivative security. This total reflects his direct holdings following the new award and indicates his ongoing equity stake associated with his role at Columbia Banking System.

Was Andrew H. Ognall’s COLB transaction a market purchase or sale?

The transaction was an acquisition through a grant of restricted stock units, not an open-market trade. It is coded as a grant, award, or other acquisition, reflecting equity compensation rather than discretionary buying or selling of Columbia Banking System shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/20/2026 - 07:38 PM Learn about SEC filing dates

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

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

OGNALL ANDREW H

(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)
	EVP Chief Risk Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/18/2026

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

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
Restricted Stock Unit	(1)	02/18/2026		A		8,002		(1)	(1)	Common Stock	8,002	$31.24	55,407	D

Explanation of Responses:

1. Restricted stock units granted 02/18/2026. The grant will vest 33.33% per year over three years.

Remarks:

	/s/ Andrea M. Newburn, Attorney-in-fact	02/20/2026
	** 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.