Columbia Banking (COLB) EVP CHRO granted 8,322 restricted stock units as equity pay

Rhea-AI Filing Summary

Giem Judi reported acquisition or exercise transactions in this Form 4 filing.

Columbia Banking System, Inc. executive Judi Giem, EVP and Chief Human Resources Officer, reported an equity compensation grant in the form of 8,322 restricted stock units on February 18, 2026. The grant was recorded at a reference price of $31.24 per unit and represents a non-cash award rather than an open-market purchase.

After this grant, Giem directly holds a total of 15,501 restricted stock units. According to the disclosure, the award will vest in installments of 33.33% per year over three years, meaning the units become deliverable as shares over time if service-based conditions are met.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Giem Judi

Role EVP CHRO

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	8,322	$31.24	$260K

Holdings After Transaction: Restricted Stock Unit — 15,501 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^*

Giem Judi

(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 CHRO

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		8,322		(1)	(1)	Common Stock	8,322	$31.24	15,501	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 did COLB executive Judi Giem report in this Form 4 filing?

Judi Giem reported receiving a grant of 8,322 restricted stock units as equity compensation. These units are a form of stock-based award that can convert into Columbia Banking System, Inc. shares over time as vesting conditions tied to continued service are met.

How many restricted stock units did COLB grant to Judi Giem and at what price?

The filing shows a grant of 8,322 restricted stock units at a reference price of $31.24 per unit. This price is used for reporting purposes and reflects the value assigned to the award on the grant date in the insider transaction disclosure.

How does this Form 4 affect Judi Giem’s total COLB restricted stock holdings?

After the reported grant, Judi Giem beneficially owns 15,501 restricted stock units directly. This total includes the newly awarded 8,322 units and represents the aggregate number of RSUs reported as held following the February 18, 2026 equity compensation transaction.

What is the vesting schedule for Judi Giem’s new COLB restricted stock units?

The restricted stock units granted on February 18, 2026 vest 33.33% per year over three years. This means the award becomes deliverable in roughly equal annual installments, contingent on satisfying the continued service conditions described in the compensation arrangement.

Is the COLB Form 4 for Judi Giem a stock purchase or an equity award?

The Form 4 reflects an equity award, not an open-market stock purchase. The transaction code is “A,” described as a grant, award, or other acquisition, indicating these restricted stock units were granted as compensation rather than bought in the public market.

What role does Judi Giem hold at Columbia Banking System, Inc. (COLB)?

Judi Giem is identified as an officer of Columbia Banking System, Inc. with the title EVP CHRO, meaning Executive Vice President and Chief Human Resources Officer. The reported restricted stock unit grant is part of her disclosed executive equity compensation package.