Columbia Banking System (COLB) approves $0.36 per share quarterly dividend

Rhea-AI Filing Summary

Columbia Banking System, Inc. reported that its Board of Directors approved a regular quarterly cash dividend of $0.36 per common share. The dividend will be paid on September 15, 2025 to shareholders who are on record as owning Columbia common stock as of August 29, 2025. The company issued a press release with these details, which is included as an exhibit to the filing.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities and Exchange Act of 1934

Date of Report: August 15, 2025

(Date of earliest event reported)

Columbia Banking System, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Washington			000-20288			91-1422237
(State or Other Jurisdiction of Incorporation or Organization)			(Commission File Number)			(I.R.S. Employer Identification Number)

1301 A Street

Tacoma, Washington 98402-4200

(address of Principal Executive Offices) (Zip Code)

(253) 305-1900

(Registrant's Telephone Number, Including Area Code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[ ☐ ]    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ☐ ]    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ☐ ]    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ☐ ]    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

TITLE OF EACH CLASS			TRADING SYMBOL			NAME OF EXCHANGE
Common Stock, No Par Value			COLB			The NASDAQ Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company [ ☐ ]

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. [ ]

Item 8.01 Other Events.

On August 15, 2025, Columbia Banking System, Inc., parent company of Columbia Bank,1 announced its Board of Directors has approved a quarterly cash dividend in the amount of $0.36 per common share. The dividend is payable September 15, 2025, to shareholders of record as of August 29, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference in its entirety.

Item 9.01			Financial Statements and Exhibits
(d)			Exhibits.
			99.1 Press Release Announcing Quarterly Cash Dividend
			104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

1 Note: Columbia renamed Umpqua Bank to "Columbia Bank" effective July 1, 2025, and it will begin doing business under the Columbia Bank name and brand beginning on September 1, 2025.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			COLUMBIA BANKING SYSTEM, INC. (Registrant)
Dated: August 15, 2025			By: /s/ Ronald L. Farnsworth        Ronald L. Farnsworth       Executive Vice President/Chief Financial Officer

FAQ

What dividend did Columbia Banking System (COLB) declare in this 8-K?

Columbia Banking System's Board approved a quarterly cash dividend of $0.36 per common share.

When is the Columbia Banking System (COLB) dividend payable?

The dividend is payable on September 15, 2025 to eligible shareholders.

What is the record date for Columbia Banking System's $0.36 dividend?

Shareholders must be on record as of August 29, 2025 to receive the $0.36 per share dividend.

What type of event does this Columbia Banking System 8-K report?

This 8-K reports an Item 8.01 Other Events disclosure related to the approval of a quarterly cash dividend.

Which Columbia Banking System security is affected by this dividend?

The dividend applies to Columbia Banking System, Inc. common stock (trading symbol COLB).

Did Columbia Banking System include any exhibits with this dividend announcement?

Yes, the company attached a press release announcing the quarterly cash dividend as Exhibit 99.1.