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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 Exchange Act of 1934
Date of Report (Date of earliest event reported):
September 17, 2020

COLUMBIA BANKING SYSTEM, INC.
(Exact name of registrant as specified in its charter)
Washington000-2028891-1422237
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)
1301 A Street
Tacoma, WA 98402-2156
(Address of principal executive offices and 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 classTrading symbolName of each exchange on which registered
Common Stock, No Par ValueCOLBThe 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
Today, Columbia Banking System, Inc. (the "Company") is updating its Earnings Presentation Second Quarter 2020 to include updated information regarding its loan deferrals. A copy of the updated presentation will be posted on the Company's website under "About - Investor Relations".




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.
Date:September 17, 2020/s/ Kumi Yamamoto Baruffi
Kumi Yamamoto Baruffi
Executive Vice President, General Counsel and
Corporate Secretary