Columbia Banking System COLB SEC Filings

NASDAQ COLB
$30.48 +0.06 (+0.18%)
At close: Nov 6, 2026 · 4:00 PM EST
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Columbia Banking System, Inc. (COLB) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
110-QQuarterly & Annual Report0000887343-26-000188Nov 5, 2026 4:34 PM
24Insider Transaction0000887343-26-000185Oct 30, 2026 10:48 PM
3144Insider Transaction0001959173-26-007540Oct 29, 2026 5:16 PM
48-KCurrent Report0001193125-26-434182Oct 27, 2026 8:03 PM
58-KCurrent Report0000887343-26-000184Oct 22, 2026 12:15 AM
68-KCurrent Report0000887343-26-000181Sep 30, 2026 9:07 PM
74Insider Transaction0000887343-26-000178Sep 15, 2026 8:55 PM
84Insider Transaction0001267342-26-000003Sep 8, 2026 9:24 PM
94Insider Transaction0001084960-26-000007Sep 4, 2026 8:41 PM
103Insider Transaction0000887343-26-000176Sep 2, 2026 8:37 PM
114Insider Transaction0000887343-26-000174Aug 18, 2026 8:50 PM
128-KCurrent Report0000887343-26-000173Aug 14, 2026 8:35 PM
13SCHEDULE 13GBeneficial Ownership Report0000902219-26-000265Aug 13, 2026 8:08 PM
1410-QQuarterly & Annual Report0000887343-26-000170Aug 4, 2026 9:29 PM
158-KCurrent Report0000887343-26-000167Jul 30, 2026 9:27 PM
168-KCurrent Report0000887343-26-000165Jul 23, 2026 8:31 PM
174Insider Transaction0000887343-26-000161Jul 2, 2026 9:17 PM
188-KCurrent Report0000887343-26-000159Jul 1, 2026 10:00 PM
1911-KOthers0000887343-26-000156Jun 25, 2026 8:37 PM
204Insider Transaction0001133099-26-000010Jun 16, 2026 8:46 PM
2111-KOthers0000887343-26-000150Jun 16, 2026 8:34 PM
224Insider Transaction0001798077-26-000005Jun 10, 2026 8:52 PM
23144Insider Transaction0001959173-26-004456Jun 8, 2026 9:08 PM
244Insider Transaction0000887343-26-000147May 18, 2026 9:18 PM
254Insider Transaction0001481735-26-000003May 18, 2026 9:17 PM
264Insider Transaction0001222385-26-000002May 18, 2026 9:16 PM
274Insider Transaction0001610217-26-000002May 18, 2026 9:14 PM
284Insider Transaction0000887343-26-000146May 18, 2026 9:13 PM
294Insider Transaction0001284574-26-000003May 18, 2026 9:10 PM
304Insider Transaction0001133099-26-000007May 18, 2026 9:10 PM
314Insider Transaction0001713258-26-000002May 18, 2026 9:09 PM
324Insider Transaction0001610387-26-000002May 18, 2026 8:31 PM
334Insider Transaction0001537873-26-000002May 18, 2026 8:30 PM
348-KCurrent Report0000887343-26-000143May 15, 2026 5:42 PM
358-KCurrent Report0000887343-26-000142May 15, 2026 5:39 PM
3610-QQuarterly & Annual Report0000887343-26-000135May 5, 2026 8:32 PM
37SCHEDULE 13GBeneficial Ownership Report0002100119-26-000319Apr 29, 2026 9:43 PM
388-KCurrent Report0000887343-26-000132Apr 23, 2026 8:13 PM
394Insider Transaction0001740374-26-000004Apr 16, 2026 9:31 PM
40ARSOthers0000887343-26-000128Mar 31, 2026 9:22 PM
41DEF 14AOthers0000887343-26-000126Mar 31, 2026 9:21 PM
42DEFA14AOthers0000887343-26-000127Mar 31, 2026 9:21 PM
4311-KOthers0000887343-26-000119Mar 31, 2026 8:32 PM
448-KCurrent Report0000887343-26-000116Mar 31, 2026 5:33 PM
45SCHEDULE 13GBeneficial Ownership Report0000102909-26-001080Mar 26, 2026 9:42 PM
464Insider Transaction0000887343-26-000107Mar 20, 2026 11:26 PM
474Insider Transaction0000887343-26-000106Mar 20, 2026 11:25 PM
484Insider Transaction0001133099-26-000005Mar 17, 2026 12:50 AM
494Insider Transaction0001550429-26-000002Mar 17, 2026 12:48 AM
504Insider Transaction0001606248-26-000002Mar 17, 2026 12:45 AM
...

Columbia Banking System, Inc. SEC Filings API

Pull Columbia Banking System, Inc.'s SEC filing index, with links to every filing and exhibit, into your own tools with the Business Quant SEC Filings API. Swap YOUR_API_KEY for your own key.

https://data.businessquant.com/secfilings?ticker=COLB&formtype=10-K,10-Q&api_key=YOUR_API_KEY