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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: December 29, 2023

(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	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 7.01			Regulation FD Disclosure

On December 29, 2023, Columbia Banking System, Inc. announced that it will conduct a quarterly earnings conference call on Wednesday, January 24, 2024, at 2:00 p.m. PT (5:00 p.m. ET). During the call, the Company will provide an update on recent activities and discuss its fourth quarter 2023 financial results. The press release announcing the conference call information is attached as Exhibit 99.1 and incorporated herein by reference.


Item 9.01			Financial Statements and Exhibits

(d)			Exhibits.
			99.1 Press Release Announcing Quarterly Earnings Conference Call
			104 Cover Page Interactive Data File (embedded within the Inline XBRL document)

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: December 29, 2023			By:/s/ Kumi Yamamoto Baruffi Kumi Yamamoto Baruffi General Counsel

EX-99.1 2 colbex991q42023earningscal.htm PRESS RELEASE ANNOUNCING QUARTERLY EARNINGS CONFERENCE CALL Document

Columbia Banking System Announces Date of Fourth Quarter 2023 Earnings Release and Conference Call

TACOMA, Wash., December 29, 2023 – Columbia Banking System, Inc. (“Columbia” Nasdaq: COLB), parent company of Umpqua Bank, today announced it will release fourth quarter 2023 financial results on Wednesday, January 24, 2024, after market close. The Company will host a conference call for investors and analysts at 2:00 p.m. PT (5:00 p.m. ET) that same day. During the call, the Company will provide an update on recent activities and discuss its fourth quarter 2023 financial results. There will be a live question-and-answer session following the presentation, and participants may register for the call using the below link to receive dial-in details and their own unique PINs or join the audiocast. It is recommended you join 10 minutes prior to the start time.

Join the audiocast: https://edge.media-server.com/mmc/p/eo4z866c/

Access the replay through the Company’s investor relations page under the “News & Market Data-Event Calendar” section: https://www.columbiabankingsystem.com

About Columbia

Columbia (Nasdaq: COLB) is headquartered in Tacoma, Washington and is the parent company of Umpqua Bank, an award-winning western U.S. regional bank based in Lake Oswego, Oregon. In March of 2023, Columbia and Umpqua combined two of the Pacific Northwest's premier financial institutions under the Umpqua Bank brand to create one of the largest banks headquartered in the West and a top-30 U.S. bank. With over $50 billion of assets, Umpqua Bank combines the resources, sophistication and expertise of a national bank with a commitment to deliver personalized service at scale. The bank operates in Arizona, California, Colorado, Idaho, Nevada, Oregon, Utah, and Washington and supports consumers and businesses through a full suite of services, including retail and commercial banking; Small Business Administration lending; institutional and corporate banking; and equipment leasing. Umpqua Bank customers also have access to comprehensive investment and wealth management expertise as well as healthcare and private banking through Columbia Wealth Management and Columbia Trust Company, a subsidiary of Columbia.

Investor Relations Contact:

Jacquelynne “Jacque” Bohlen

ir@umpquabank.com

(503) 727-4100

Note Regarding Forward Looking Statements

This news release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which can be identified by words such as "may," "expected," "anticipate," "continue," or other comparable words. In addition, all statements other than statements of historical facts that address activities that Columbia expects or anticipates will or may occur in the future are forward-looking statements. Readers are encouraged to read the SEC reports of Columbia, particularly its form 10-K for the Fiscal Year ended December 31, 2022, for meaningful cautionary language discussing why actual results may vary materially from those anticipated by management.

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