Columbia Banking (NASDAQ: COLB) director awarded 3,949 Common shares

Rhea-AI Filing Summary

Varnado Anddria reported acquisition or exercise transactions in this Form 4 filing.

COLUMBIA BANKING SYSTEM, INC. director Anddria Varnado received a grant of 3,949 shares of Common Stock on May 14, 2026. The shares were awarded at a reported price of $0.00 per share, indicating a compensation-related equity award rather than an open-market purchase. Following this grant, Varnado directly holds 30,894 shares of the company’s common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Varnado Anddria

Role null

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	3,949	$0.00	--

Holdings After Transaction: Common Stock — 30,894 shares (Direct, null)

Footnotes (1)

Key Figures

Shares granted: 3,949 shares Transaction price: $0.00 per share Shares held after: 30,894 shares

3 metrics

Shares granted 3,949 shares Common Stock award on May 14, 2026

Transaction price $0.00 per share Equity grant, not open-market purchase

Shares held after 30,894 shares Direct Common Stock holdings after grant

Key Terms

Common Stock, Grant, award, or other acquisition, Form 4

3 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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^*

Varnado Anddria

(Last) (First) (Middle)

C/O COLUMBIA BANKING SYSTEM, INC.

1301 A STREET

(Street)

TACOMA WASHINGTON 98402

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
COLUMBIA BANKING SYSTEM, INC. [ COLB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/14/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	05/14/2026		A		3,949	A	$0	30,894	D

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	05/18/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did COLB director Anddria Varnado report?

Director Anddria Varnado reported receiving a grant of 3,949 shares of Columbia Banking System Common Stock. The award was recorded at $0.00 per share, indicating it was compensation-related rather than an open-market purchase.

How many Columbia Banking System (COLB) shares does Anddria Varnado now hold?

After the reported equity grant, Anddria Varnado directly holds 30,894 shares of Columbia Banking System Common Stock. This figure reflects her position immediately following the 3,949-share award disclosed in the Form 4 filing.

Was Anddria Varnado’s COLB transaction a stock purchase or a grant?

The transaction was a grant or award acquisition of 3,949 COLB Common Stock shares, not an open-market purchase. It is coded as a grant, award, or other acquisition with a reported transaction price of $0.00 per share.

What does a $0.00 transaction price mean in the COLB Form 4 filing?

A $0.00 transaction price typically indicates the shares were granted as compensation, not bought in the market. In this case, 3,949 COLB Common Stock shares were awarded to director Anddria Varnado at no cash cost to her.

Does the COLB Form 4 show any stock sales by Anddria Varnado?

The Form 4 shows no stock sales by Anddria Varnado. It reports only one transaction: a grant or award acquisition of 3,949 COLB Common Stock shares, increasing her direct holdings to 30,894 shares.