Columbia Banking director granted 3,949 COLB shares

Terry Hilliard C. III reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Terry Hilliard C. III reported acquisition or exercise transactions in this Form 4 filing.

COLUMBIA BANKING SYSTEM, INC. director Terry C. Hilliard III received a grant of 3,949 shares of Common Stock on May 14, 2026. The award was recorded at a price of $0.00 per share, indicating a compensation-related stock grant rather than an open-market purchase. Following this grant, Hilliard directly holds 55,514 shares of Common Stock.

Insider Trade Summary

Grant/Award: 3,949 shares

Grant/Award 1 txn

Insider Terry Hilliard C. III

Role Director

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

Holdings After Transaction: Common Stock — 55,514 shares (Direct)

Key Figures

Shares granted: 3,949 shares Grant price: $0.00 per share Shares held after: 55,514 shares

3 metrics

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

Grant price $0.00 per share Recorded transaction price for stock award

Shares held after 55,514 shares Direct Common Stock holdings after grant

Key Terms

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

3 terms

Grant, award, or other acquisition financial

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

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.

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did COLB director Terry C. Hilliard III report?

Director Terry C. Hilliard III reported receiving a grant of 3,949 shares of Columbia Banking System Common Stock. The transaction is coded as a grant or award (Code A) and reflects compensation, not an open-market purchase or sale.

Was the COLB insider transaction a stock purchase or a grant?

The COLB insider transaction was a stock grant, not a purchase. It is coded A for “Grant, award, or other acquisition” with a price of $0.00 per share, indicating compensation rather than an open-market buy order.

How many Columbia Banking System shares does Terry C. Hilliard III hold after this grant?

After the 3,949-share grant, Terry C. Hilliard III directly holds 55,514 shares of Columbia Banking System Common Stock. This total reflects his position immediately following the reported Form 4 transaction on May 14, 2026.

What does transaction code A mean in the COLB Form 4 filing?

Transaction code A in the COLB Form 4 indicates a “Grant, award, or other acquisition.” This typically reflects stock-based compensation or similar awards rather than an open-market purchase, which would usually be reported with transaction code P.

Did the COLB director sell any shares in this Form 4 transaction?

No shares were sold in this Form 4 transaction. The filing shows only an acquisition via grant of 3,949 Common Stock shares, with zero reported sell transactions or dispositions for Terry C. Hilliard III in this specific report.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/18/2026 - 05:17 PM Learn about SEC filing dates

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^*

Terry Hilliard C. III

(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	55,514	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)