COLUMBIA BANKING SYSTEM, INC. — S-4/A Filings
12 S-4/A filings on record
This page lists all S-4/A 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 12 S-4/A 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 |
|---|---|---|---|---|
| S-4/A | S-4/A | 0001193125-25-140728 | Jun 13, 2025 | — |
| S-4/A | S-4/A | 0001193125-21-346812 | Dec 2, 2021 | — |
| S-4/A | S-4/A | 0001193125-21-245789 | Aug 13, 2021 | — |
| S-4/A | S-4/A | 0001193125-17-130696 | Apr 20, 2017 | — |
| S-4/A | S-4/A | 0001193125-17-091065 | Mar 22, 2017 | — |
| S-4/A | FORM S-4/A | 0001193125-14-348720 | Sep 22, 2014 | — |
| S-4/A | AMENDMENT #3 TO FORM S-4 | 0001193125-13-028653 | Jan 30, 2013 | — |
| S-4/A | AMENDMENT #2 TO FORM S-4 | 0001193125-13-016131 | Jan 17, 2013 | — |
| S-4/A | AMENDMENT #1 TO FORM S-4 | 0001193125-12-517911 | Dec 28, 2012 | — |
| S-4/A | AMENDMENT NO. 1 TO FORM S-4 | 0001193125-04-130324 | Aug 3, 2004 | — |
| S-4/A | AMENDMENT #2 TO THE FORM S-4 | 0001012870-97-001981 | Oct 16, 1997 | — |
| S-4/A | AMENDMENT #1 TO THE FORM S-4 | 0001032210-97-000149 | Oct 8, 1997 | — |