COLUMBIA BANKING SYSTEM, INC. — 425 Filings
56 425 filings on record
This page lists all 425 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 56 425 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 |
|---|---|---|---|---|
| 425 | 425 | 0001193125-25-158233 | Jul 11, 2025 | — |
| 425 | 425 | 0001193125-25-112969 | May 6, 2025 | — |
| 425 | 425 | 0001193125-25-094682 | Apr 25, 2025 | — |
| 425 | 425 | 0001193125-25-094211 | Apr 25, 2025 | — |
| 425 | 425 | 0001193125-25-091907 | Apr 24, 2025 | — |
| 425 | 425 | 0001193125-25-091904 | Apr 24, 2025 | — |
| 425 | 425 | 0001193125-25-091900 | Apr 24, 2025 | — |
| 425 | 425 | 0001193125-25-091895 | Apr 24, 2025 | — |
| 425 | 425 | 0001193125-25-091891 | Apr 24, 2025 | — |
| 425 | 425 | 0001193125-25-091472 | Apr 23, 2025 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS, BUSINESS COMBINATIONS | 0000887343-22-000008 | Jan 21, 2022 | — |
| 425 | 425 | 0001193125-22-012770 | Jan 20, 2022 | — |
| 425 | 425 | 0001193125-21-354087 | Dec 10, 2021 | — |
| 425 | 425 | 0001193125-21-354085 | Dec 10, 2021 | — |
| 425 | 425 | 0001193125-21-352819 | Dec 9, 2021 | — |
| 425 | 425 | 0001193125-21-352788 | Dec 9, 2021 | — |
| 425 | 425 | 0001193125-21-351468 | Dec 8, 2021 | — |
| 425 | 425 | 0001193125-21-350952 | Dec 8, 2021 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS, BUSINESS COMBINATIONS | 0000887343-21-000163 | Oct 29, 2021 | — |
| 425 | 425 | 0001193125-21-300187 | Oct 15, 2021 | — |
| 425 | 425 | 0001193125-21-300183 | Oct 15, 2021 | — |
| 425 | 425 | 0001193125-21-298101 | Oct 14, 2021 | — |
| 425 | 425 | 0001193125-21-298099 | Oct 14, 2021 | — |
| 425 | 425 | 0001193125-21-298098 | Oct 14, 2021 | — |
| 425 | 425 | 0001193125-21-297033 | Oct 12, 2021 | — |
| 425 | 425 | 0001193125-21-296329 | Oct 12, 2021 | — |
| 425 | PROSPECTUSES AND COMMUNICATIONS, BUSINESS COMBINATIONS | 0000887343-21-000152 | Jul 29, 2021 | — |
| 425 | 425 | 0001193125-21-198113 | Jun 24, 2021 | — |
| 425 | FORM 8-K | 0001193125-17-327401 | Oct 31, 2017 | — |
| 425 | 8-K | 0000887343-17-000156 | Oct 27, 2017 | — |
| 425 | 8-K | 0000887343-17-000142 | Jul 27, 2017 | — |
| 425 | 8-K | 0001193125-17-198635 | Jun 8, 2017 | — |
| 425 | 8-K | 0000887343-17-000093 | Apr 28, 2017 | — |
| 425 | 8-K | 0001193125-17-141021 | Apr 27, 2017 | — |
| 425 | 8-K | 0000887343-17-000022 | Jan 27, 2017 | — |
| 425 | 8-K | 0001193125-17-018888 | Jan 26, 2017 | — |
| 425 | 425 | 0001193125-17-008211 | Jan 12, 2017 | — |
| 425 | 8-K | 0001193125-17-006256 | Jan 10, 2017 | — |
| 425 | FORM 8-K | 0001193125-14-376349 | Oct 20, 2014 | — |
| 425 | FORM 8-K | 0001193125-14-375178 | Oct 17, 2014 | — |
| 425 | 425 | 0001193125-14-282389 | Jul 28, 2014 | — |
| 425 | FORM 8-K | 0001193125-14-277810 | Jul 24, 2014 | — |
| 425 | FORM 8-K | 0001193125-13-113443 | Mar 19, 2013 | — |
| 425 | FORM 425 | 0001193125-12-436433 | Oct 26, 2012 | — |
| 425 | FORM 8-K | 0001193125-12-409389 | Oct 1, 2012 | — |
| 425 | 425 | 0001193125-12-405572 | Sep 27, 2012 | — |
| 425 | FORM 8-K | 0001193125-12-404165 | Sep 26, 2012 | — |
| 425 | FORM 425 | 0001193125-07-110320 | May 10, 2007 | — |
| 425 | FORM 425 | 0001193125-07-110074 | May 10, 2007 | — |
| 425 | FORM 8-K | 0001193125-07-075549 | Apr 5, 2007 | — |