Columbia Banking (NASDAQ: COLB) risk chief logs 931-share tax disposition

Rhea-AI Filing Summary

Columbia Banking System executive reports tax-related share disposition

EVP and Chief Risk Officer Andrew H. Ognall reported a tax-withholding disposition of 931 shares of Columbia Banking System common stock at $31.49 per share. After this transaction, he directly held 74,006 shares, plus 2,635 shares held indirectly through a 401(k) plan.

Insights

Equity compensation specialist

Small, tax-driven share disposition with limited signaling value.

Executive Andrew H. Ognall recorded a Form 4 transaction coded "F," indicating 931 shares of common stock were disposed of to satisfy tax obligations at a price of $31.49 per share. This reflects a withholding mechanism tied to equity compensation rather than an open-market sale.

Following the transaction, Ognall directly held 74,006 shares and indirectly held 2,635 shares via a 401(k) plan. Because the disposition is tax-related and relatively small compared with his remaining holdings, it generally carries limited informational value regarding his view of Columbia Banking System's prospects.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider OGNALL ANDREW H

Role EVP Chief Risk Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	931	$31.49	$29K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 74,006 shares (Direct); Common Stock — 2,635 shares (Indirect, by 401(k))

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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)
02/15/2026

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	02/15/2026		F		931	D	$31.49	74,006	D
Common Stock								2,635	I	by 401(k)

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:

Remarks:

	/s/ Andrea M. Newburn, Attorney-in-fact	02/18/2026
	** 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 transaction did COLB executive Andrew H. Ognall report?

Andrew H. Ognall reported a tax-withholding disposition of 931 shares of Columbia Banking System common stock. The shares were used to cover tax obligations related to equity compensation, rather than being sold in an open-market transaction.

At what price were the COLB shares used for Andrew H. Ognall’s tax withholding?

The 931 Columbia Banking System common shares were valued at $31.49 per share for the tax-withholding disposition. This price is used solely for reporting the value of shares withheld to satisfy tax liabilities tied to equity awards.

How many COLB shares does Andrew H. Ognall hold after the reported transaction?

After the tax-withholding disposition, Andrew H. Ognall directly owns 74,006 shares of Columbia Banking System common stock. He also has an additional 2,635 shares held indirectly through a 401(k) plan, reflecting retirement-related ownership.

Was Andrew H. Ognall’s COLB transaction an open-market sale or tax withholding?

The transaction was a tax-withholding disposition, reported with code "F". This means shares were withheld to cover taxes on equity compensation, not sold as a discretionary open-market trade by the executive.

What role does Andrew H. Ognall hold at Columbia Banking System (COLB)?

Andrew H. Ognall serves as EVP Chief Risk Officer at Columbia Banking System. His Form 4 filing reflects insider ownership and equity-compensation-related activity, which can help investors understand how senior management is compensated in stock.

How significant is the 931-share COLB disposition for Andrew H. Ognall’s holdings?

The 931-share tax-withholding disposition is small relative to Andrew H. Ognall’s 74,006 directly held shares. Because it is tax-driven and limited in size, it typically has modest signaling effect about management’s confidence.