COLUMBIA BANKING SYSTEM, INC. — 8-K Filings
283 8-K filings on record
This page lists all 8-K filings submitted to the SEC by COLUMBIA BANKING SYSTEM, INC. (COLB), sorted by most recent first. Each row links to the full filing on EdgarLookup. COLUMBIA BANKING SYSTEM, INC. has filed 283 8-K documents with the SEC since 2017. To view all SEC filings by COLUMBIA BANKING SYSTEM, INC., see the full filings list.
All
10-C
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
144
3
3/A
4
4/A
424B1
424B3
424B5
425
5
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFM14A
DFAN14A
EFFECT
POS AM
PRE 14A
S-2
S-2/A
S-2MEF
S-3
S-3ASR
S-3MEF
S-4
S-4/A
S-8
S-8 POS
SC 13G
SC 13G/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 8-K | 8-K | 0000887343-26-000039 | Feb 13, 2026 | — |
| 8-K | 8-K | 0000887343-26-000012 | Jan 22, 2026 | — |
| 8-K | 8-K | 0000887343-25-000280 | Dec 31, 2025 | — |
| 8-K | 8-K | 0001193125-25-290691 | Nov 21, 2025 | Nov 19, 2025 |
| 8-K | 8-K | 0000887343-25-000271 | Nov 14, 2025 | — |
| 8-K | 8-K | 0001193125-25-264630 | Nov 4, 2025 | Oct 29, 2025 |
| 8-K | 8-K | 0000887343-25-000262 | Oct 30, 2025 | — |
| 8-K | 8-K | 0001193125-25-193405 | Sep 2, 2025 | — |
| 8-K | 8-K | 0000887343-25-000238 | Aug 29, 2025 | — |
| 8-K | 8-K | 0000887343-25-000236 | Aug 15, 2025 | — |
| 8-K | 8-K | 0000887343-25-000229 | Aug 6, 2025 | — |
| 8-K | 8-K | 0000887343-25-000221 | Jul 24, 2025 | — |
| 8-K | 8-K | 0000887343-25-000212 | Jul 22, 2025 | Jul 21, 2025 |
| 8-K | 8-K | 0001193125-25-158231 | Jul 11, 2025 | — |
| 8-K | 8-K | 0000887343-25-000208 | Jun 30, 2025 | — |
| 8-K | 8-K | 0000887343-25-000172 | May 16, 2025 | — |
| 8-K | 8-K | 0000887343-25-000169 | May 15, 2025 | — |
| 8-K | FORM 8-K | 0000887343-25-000163 | May 5, 2025 | — |
| 8-K | 8-K | 0001193125-25-094676 | Apr 25, 2025 | Apr 23, 2025 |
| 8-K | 8-K | 0000887343-25-000159 | Apr 23, 2025 | — |
| 8-K | 8-K | 0001193125-25-091469 | Apr 23, 2025 | — |
| 8-K | 8-K | 0000887343-25-000143 | Apr 2, 2025 | Mar 30, 2025 |
| 8-K | 8-K | 0000887343-25-000133 | Mar 31, 2025 | — |
| 8-K | 8-K | 0000887343-25-000130 | Mar 27, 2025 | — |
| 8-K | 8-K | 0000887343-25-000022 | Feb 14, 2025 | — |
| 8-K | 8-K | 0000887343-25-000015 | Jan 23, 2025 | — |
| 8-K | 8-K | 0000887343-24-000275 | Dec 31, 2024 | — |
| 8-K | 8-K | 0000887343-24-000265 | Nov 15, 2024 | — |
| 8-K | 8-K | 0000887343-24-000256 | Oct 24, 2024 | — |
| 8-K | 8-K | 0000887343-24-000252 | Sep 30, 2024 | — |
| 8-K | 8-K | 0000887343-24-000247 | Aug 12, 2024 | — |
| 8-K | 8-K | 0000887343-24-000242 | Jul 25, 2024 | — |
| 8-K | 8-K | 0000887343-24-000235 | Jun 28, 2024 | — |
| 8-K | 8-K | 0000887343-24-000201 | May 13, 2024 | — |
| 8-K | 8-K | 0000887343-24-000187 | May 9, 2024 | May 8, 2024 |
| 8-K | 8-K | 0000887343-24-000178 | Apr 25, 2024 | — |
| 8-K | 8-K | 0000887343-24-000168 | Apr 1, 2024 | — |
| 8-K | 8-K | 0000887343-24-000112 | Mar 5, 2024 | Mar 4, 2024 |
| 8-K | 8-K | 0000887343-24-000111 | Mar 4, 2024 | — |
| 8-K | 8-K | 0000887343-24-000052 | Feb 9, 2024 | — |
| 8-K | 8-K | 0000887343-24-000024 | Jan 24, 2024 | — |
| 8-K | 8-K | 0000887343-23-000313 | Dec 29, 2023 | — |
| 8-K | 8-K | 0000887343-23-000310 | Nov 13, 2023 | — |
| 8-K | 8-K | 0000887343-23-000304 | Oct 18, 2023 | — |
| 8-K | 8-K | 0000887343-23-000301 | Sep 29, 2023 | — |
| 8-K | 8-K | 0000887343-23-000298 | Aug 14, 2023 | — |
| 8-K | 8-K | 0000887343-23-000291 | Jul 19, 2023 | — |
| 8-K | 8-K | 0000887343-23-000279 | Jun 30, 2023 | — |
| 8-K | 8-K | 0000887343-23-000274 | Jun 27, 2023 | — |
| 8-K | 8-K | 0000887343-23-000253 | May 23, 2023 | May 18, 2023 |