$COLB 8-K SEC Filings

Filed On	Filing
27 Oct 2026	8-K: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers This letter memorializes our understanding regarding your retirement with Columbia Bank (the “Bank”) and your service with Columbia Banking System, Inc. (“CBSI” and together with the Bank, the “Company”).
22 Oct 2026	8-K: Results of Operations and Financial Condition; Regulation FD Disclosure "Our third quarter performance demonstrates the benefits of consistent execution and active balance sheet management," said Clint Stein, Chairman, CEO & President. "By remaining focused on relationship-driven growth, prudent loan and dep...
30 Sep 2026	8-K: Regulation FD Disclosure TACOMA, Wash., Sept. 30, 2026 – Columbia Banking System, Inc. (“Columbia” Nasdaq: COLB), parent company of Columbia Bank, today announced it will release third quarter 2026 financial results on Thursday, October 22, 2026, after market cl...
14 Aug 2026	8-K: Other Events
30 Jul 2026	8-K: Departure/Election of Directors or Officers; Compensation; Regulation FD Disclosure
23 Jul 2026	8-K: Results of Operations and Financial Condition; Regulation FD Disclosure
01 Jul 2026	8-K: Regulation FD Disclosure
15 May 2026	8-K: Other Events
15 May 2026	8-K: Submission of Matters to a Vote of Security Holders
23 Apr 2026	8-K: Results of Operations and Financial Condition; Regulation FD Disclosure
31 Mar 2026	8-K: Regulation FD Disclosure
13 Feb 2026	8-K: Other Events
22 Jan 2026	8-K: Results of Operations and Financial Condition; Regulation FD Disclosure
31 Dec 2025	8-K: Regulation FD Disclosure
21 Nov 2025	8-K: Departure/Election of Directors or Officers; Compensation
14 Nov 2025	8-K: Other Events
04 Nov 2025	8-K: Departure/Election of Directors or Officers; Compensation; Regulation FD Disclosure
30 Oct 2025	8-K: Results of Operations and Financial Condition; Regulation FD Disclosure
02 Sep 2025	8-K: Completion of Acquisition or Disposition of Assets; Departure/Election of Directors or Officers; Compensation +1 more
29 Aug 2025	8-K: Regulation FD Disclosure

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