Columbia Banking (NASDAQ: COLB) exec logs tax-withholding share disposition

Rhea-AI Filing Summary

COLUMBIA BANKING SYSTEM, INC. Senior Executive VP Torran B. Nixon reported a tax-withholding share disposition. On February 15, 2026, 1,905 shares of common stock were used to cover taxes at $31.49 per share, leaving 105,690 shares held directly. He also reports indirect holdings of 3,650 shares through a family trust and 1,869 shares in a 401(k).

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

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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^*

Nixon Torran B

(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)
02/15/2026

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		1,905	D	$31.49	105,690	D
Common Stock								3,650	I	by family trust
Common Stock								1,869	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 Torran B. Nixon report?

Torran B. Nixon reported a tax-withholding disposition of 1,905 shares of Columbia Banking System common stock. The shares were used to satisfy tax obligations at $31.49 per share, rather than representing an open-market sale of shares.

How many COLB shares does Torran B. Nixon hold after the reported transaction?

After the tax-withholding disposition, Torran B. Nixon directly holds 105,690 Columbia Banking System common shares. He also reports indirect ownership of 3,650 shares through a family trust and 1,869 shares in a 401(k), reflecting his ongoing equity exposure to the company.

Was the COLB insider transaction an open-market sale of shares?

No, the COLB insider transaction was a tax-withholding disposition, coded as transaction type F. Shares were delivered to cover tax obligations associated with equity compensation, rather than being sold in the open market for discretionary portfolio purposes.

What price was used for Torran B. Nixon’s COLB tax-withholding shares?

The 1,905 Columbia Banking System shares used to cover taxes were valued at $31.49 per share. This price is used to calculate the dollar value of shares applied toward the tax liability tied to the executive’s equity compensation event.

What indirect COLB shareholdings are reported for Torran B. Nixon?

In addition to direct holdings, Torran B. Nixon reports indirect ownership of 3,650 Columbia Banking System shares through a family trust and 1,869 shares via a 401(k) plan, indicating additional beneficial interests beyond his primary directly held stake.