Company facts
- Industry
- State Commercial Banks
- Headquarters
- Tacoma, Washington
- Most recent report
- 8-K, filed Aug 14, 2026
- Incorporated
- Washington
- Filings on record
- 1,000+ filings
- On EDGAR
- CIK 887343
- Fiscal year ends
- December
- Filer status
- Large accelerated filer
Financials 8 of 38
News 8 of 137
- 8-K Other events Aug 14, 2026
- 8-K Leadership change Jul 30, 2026
- 8-K Quarterly results Jul 23, 2026
- 8-K Current report on a material event Jul 1, 2026
- 8-K Other events May 15, 2026
- 8-K Shareholder vote results May 15, 2026
- 8-K Quarterly results Apr 23, 2026
- 8-K Current report on a material event Mar 31, 2026
Prospectuses and Registrations 8 of 20
- S-8 Registration statement for an employee plan Sep 2, 2025
- 424B3 Prospectus supplement for an offering Jun 16, 2025
- S-4/A Registration statement for a merger or exchange, amended Jun 13, 2025
- S-4 Registration statement for a merger or exchange May 28, 2025
- S-3ASR Automatic shelf registration Dec 20, 2024
- S-8 Registration statement for an employee plan May 9, 2024
- S-8 Registration statement for an employee plan May 9, 2024
- S-8 Registration statement for an employee plan May 9, 2024
Proxies 8 of 18
- DEF 14A Proxy statement for a shareholder vote Mar 31, 2026
- DEFA14A Extra proxy material Mar 31, 2026
- DEFA14A Extra proxy material Apr 3, 2025
- DEF 14A Proxy statement for a shareholder vote Apr 3, 2025
- DEFA14A Extra proxy material Apr 8, 2024
- DEFA14A Extra proxy material Mar 27, 2024
- DEF 14A Proxy statement for a shareholder vote Mar 27, 2024
- DEFA14A Extra proxy material Apr 6, 2023
Ownership 8 of 731
- 4 Insider reported a trade Aug 18, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Aug 13, 2026
- 4 Insider reported a trade Jul 2, 2026
- 4 Insider reported a trade Jun 16, 2026
- 4 Insider reported a trade Jun 10, 2026
- 144 Notice of a proposed sale of restricted stock Jun 8, 2026
- 4 Insider reported a trade May 18, 2026
- 4 Insider reported a trade May 18, 2026
Other 8 of 56
- 11-K Employee stock plan report Jun 25, 2026
- 11-K/A Employee stock plan report, amended Jun 16, 2026
- ARS Annual report sent to shareholders Mar 31, 2026
- 11-K Employee stock plan report Mar 31, 2026
- 425 Jul 11, 2025
- 11-K Employee stock plan report Jun 27, 2025
- EFFECT Notice that a registration became effective Jun 16, 2025
- CORRESP Reply to SEC staff Jun 13, 2025
Everything here comes from Columbia Banking System, Inc.'s own filings on SEC EDGAR. The filing list is rechecked every hour.