Columbia Banking System (COLB) CFO granted 12,804 restricted stock units

Rhea-AI Filing Summary

Columbia Banking System reported an equity compensation grant to its EVP and Chief Financial Officer, Ivan A. Seda. He acquired 12,804 restricted stock units at a reference price of $31.24 per unit as a grant or award, increasing his direct holdings of this derivative security to 12,804 units.

According to the terms, the restricted stock units granted on February 18, 2026 will vest in three equal annual installments of 33.33% per year over three years, aligning a portion of the CFO’s compensation with the company’s future performance and share value over that period.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Seda Ivan A

Role EVP, Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	12,804	$31.24	$400K

Holdings After Transaction: Restricted Stock Unit — 12,804 shares (Direct)

Footnotes (1)

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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^*

Seda Ivan A

(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 Financial 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		12,804		(1)	(1)	Common Stock	12,804	$31.24	12,804	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.

FAQ

What insider transaction did Columbia Banking System (COLB) report for Ivan A. Seda?

Columbia Banking System reported that EVP and Chief Financial Officer Ivan A. Seda received a grant of 12,804 restricted stock units. The award was recorded as an acquisition of derivative securities, increasing his directly held restricted stock units to 12,804.

How many restricted stock units did COLB’s CFO receive in the latest grant?

COLB’s CFO received 12,804 restricted stock units in the reported grant. These units represent a form of equity compensation that can convert into shares over time, subject to the vesting schedule and any applicable company or employment conditions.

What is the vesting schedule for Ivan A. Seda’s 12,804 COLB restricted stock units?

The 12,804 restricted stock units granted to Ivan A. Seda vest 33.33% per year over three years. The grant date is February 18, 2026, so one-third of the units vest each year across this three-year period, assuming vesting conditions are met.

What was the reference price per unit for the COLB restricted stock unit grant?

The restricted stock unit grant to the COLB CFO used a reference price of $31.24 per unit. This price is reported for the derivative security in the filing and helps indicate the notional value of the 12,804-unit equity award at the time of grant.

Did the COLB CFO buy or sell shares in this Form 4, or was it a grant?

The Form 4 shows an acquisition via grant, not an open-market buy or sell. The transaction code is “A,” described as a grant, award, or other acquisition of 12,804 restricted stock units directly held by the COLB Chief Financial Officer.