COLUMBIA BANKING SYSTEM, INC. — DEF 14A Filings
29 DEF 14A filings on record
This page lists all DEF 14A 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 29 DEF 14A 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 |
|---|---|---|---|---|
| DEF 14A | DEF 14A | 0000887343-25-000152 | Apr 3, 2025 | May 15, 2025 |
| DEF 14A | DEF 14A | 0001193125-24-078782 | Mar 27, 2024 | May 8, 2024 |
| DEF 14A | DEF 14A | 0001140361-23-017022 | Apr 6, 2023 | — |
| DEF 14A | DEF 14A | 0001140361-22-010103 | Mar 18, 2022 | Apr 27, 2022 |
| DEF 14A | DEF 14A | 0001140361-21-012371 | Apr 12, 2021 | May 26, 2021 |
| DEF 14A | DEF 14A | 0000887343-20-000130 | Apr 17, 2020 | Dec 31, 2019 |
| DEF 14A | DEF 14A | 0001140361-19-006947 | Apr 12, 2019 | May 22, 2019 |
| DEF 14A | DEF 14A | 0001140361-18-018485 | Apr 13, 2018 | May 23, 2018 |
| DEF 14A | DEF 14A | 0001193125-17-121997 | Apr 13, 2017 | May 24, 2017 |
| DEF 14A | DEF 14A | 0001193125-16-506158 | Mar 16, 2016 | Apr 27, 2016 |
| DEF 14A | DEF 14A | 0001193125-15-098683 | Mar 19, 2015 | Apr 22, 2015 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-14-110566 | Mar 21, 2014 | Apr 23, 2014 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-13-136973 | Apr 1, 2013 | Apr 24, 2013 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-12-125956 | Mar 22, 2012 | Apr 25, 2012 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-11-072579 | Mar 21, 2011 | Apr 27, 2011 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-10-063234 | Mar 22, 2010 | Apr 28, 2010 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-09-061049 | Mar 23, 2009 | Apr 22, 2009 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-08-058614 | Mar 17, 2008 | Apr 23, 2008 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-07-058103 | Mar 19, 2007 | Apr 25, 2007 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001193125-06-057899 | Mar 17, 2006 | Apr 26, 2006 |
| DEF 14A | DEFINITIVE PROXY STATEMENT FOR COLUMBIA BANKING SYSTEM, INC. | 0001193125-05-060908 | Mar 25, 2005 | Apr 27, 2005 |
| DEF 14A | DEFINITIVE 14A | 0001193125-04-040519 | Mar 12, 2004 | Apr 28, 2004 |
| DEF 14A | PROXY STATEMENT | 0001032210-03-000322 | Mar 14, 2003 | Apr 23, 2003 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001032210-02-000332 | Mar 4, 2002 | Apr 2, 2002 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001032210-01-500207 | Apr 4, 2001 | May 15, 2001 |
| DEF 14A | DEFINITIVE 14A | 0001032210-00-000553 | Mar 22, 2000 | Apr 25, 2000 |
| DEF 14A | DEFINITIVE 14A NOTICE & PROXY STATEMENT | 0001032210-99-000377 | Mar 25, 1999 | Apr 28, 1999 |
| DEF 14A | DEFINITIVE PROXY STATEMENT | 0001032210-98-000222 | Mar 16, 1998 | Apr 22, 1998 |
| DEF 14A | NOTICE OF ANNUAL MEETING OF SHAREHOLDERS | 0000891020-97-000376 | Mar 20, 1997 | Apr 23, 1997 |