Columbia Banking System, Inc. SEC filings COLB
Columbia Banking System, Inc. has 1,001 filings in SEC EDGAR's recent list, going back to May 26, 2017. Its latest annual report, Form ARS, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-8 | Employee stock plan registration | Sep 2, 2025 | — |
| 424B3 | Prospectus | Jun 16, 2025 | — |
| S-4/A | Filing | Jun 13, 2025 | — |
| S-4 | Registration for a merger or exchange | May 28, 2025 | — |
| S-3ASR | Automatic shelf registration | Dec 20, 2024 | — |
| S-8 | Employee stock plan registration | May 9, 2024 | — |
| S-8 | Employee stock plan registration | May 9, 2024 | — |
| S-8 | Employee stock plan registration | May 9, 2024 | — |
| S-8 | Employee stock plan registration | Jul 25, 2023 | — |
| S-8 | Employee stock plan registration | Mar 1, 2023 | — |
| S-3ASR | Automatic shelf registration | Dec 29, 2021 | — |
| 424B3 | Prospectus | Dec 3, 2021 | — |
| S-4/A | Filing | Dec 2, 2021 | — |
| S-4 | Registration for a merger or exchange | Nov 22, 2021 | — |
| 424B3 | Prospectus | Aug 17, 2021 | — |
| S-4/A | Filing | Aug 13, 2021 | — |
| S-4 | Registration for a merger or exchange | Aug 6, 2021 | — |
| S-3ASR | Automatic shelf registration | Aug 3, 2018 | — |
| S-8 | Employee stock plan registration | Jun 28, 2018 | — |
Showing 19 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- State Commercial Banks (SIC 6022)
- Listed as
- COLB (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- WA
- Headquarters
- Tacoma, WA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 887343
- Former names
- COLUMBIA BANKING SYSTEM INC (until May 3, 2019)
Other State Commercial Banks companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.