Columbia Banking System, Inc.
COLBNasdaqCIK 887343FinancialsFiscal year ends Dec 31
Reports and events: 331 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-10-2716:03 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001193125-26-434182 |
| 2026-10-2216:15 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000184 |
| 2026-09-3017:07 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000181 |
| 2026-08-1416:35 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-26-000173 |
| 2026-08-0417:29 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0000887343-26-000170 |
| 2026-07-3017:27 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000167 |
| 2026-07-2316:31 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000165 |
| 2026-07-0118:00 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000159 |
| 2026-05-1513:42 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-26-000143 |
| 2026-05-1513:39 ET | 8-K | 5.07 Shareholder vote results | 0000887343-26-000142 |
| 2026-05-0516:32 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0000887343-26-000135 |
| 2026-04-2316:13 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000132 |
| 2026-03-3117:21 ET | DEF 14A | Proxy statementPeriod 2026-05-14 | 0000887343-26-000126 |
| 2026-03-3113:33 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000116 |
| 2026-02-2616:31 ET | 10-K | Annual reportPeriod 2025-12-31 | 0000887343-26-000088 |
| 2026-02-1313:21 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-26-000039 |
| 2026-01-2217:24 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-26-000012 |
| 2025-12-3112:13 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000280 |
| 2025-11-2108:45 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001193125-25-290691 |
| 2025-11-1414:44 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-25-000271 |
| 2025-11-0617:35 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0000887343-25-000268 |
| 2025-11-0416:02 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-264630 |
| 2025-10-3016:51 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000262 |
| 2025-09-0308:16 ET | 8-K/A | 9.01 Financial statements and exhibits | 0000887343-25-000242 |
| 2025-09-0208:01 ET | 8-K | 2.01 Completion of an acquisition or disposition; 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001193125-25-193405 |
| 2025-08-2913:47 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000238 |
| 2025-08-1512:18 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-25-000236 |
| 2025-08-0617:15 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0000887343-25-000233 |
| 2025-08-0616:49 ET | 8-K | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-25-000229 |
| 2025-07-2416:30 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000221 |
| 2025-07-2217:59 ET | 8-K | 5.07 Shareholder vote results; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000212 |
| 2025-07-1116:45 ET | 8-K | 8.01 Other events | 0001193125-25-158231 |
| 2025-06-3016:51 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000208 |
| 2025-05-1616:34 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-25-000172 |
| 2025-05-1517:19 ET | 8-K | 5.07 Shareholder vote results | 0000887343-25-000169 |
| 2025-05-0616:32 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0000887343-25-000166 |
| 2025-05-0517:17 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000163 |
| 2025-04-2506:15 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001193125-25-094676 |
| 2025-04-2317:04 ET | 8-K | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001193125-25-091469 |
| 2025-04-2316:32 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000159 |
| 2025-04-0316:32 ET | DEF 14A | Proxy statementPeriod 2025-05-15 | 0000887343-25-000152 |
| 2025-04-0216:32 ET | 8-K | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000143 |
| 2025-03-3115:02 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000133 |
| 2025-03-2716:35 ET | 8-K | 7.01 Regulation FD disclosure | 0000887343-25-000130 |
| 2025-02-2516:32 ET | 10-K | Annual reportPeriod 2024-12-31 | 0000887343-25-000054 |
| 2025-02-1414:16 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-25-000022 |
| 2025-01-2316:31 ET | 8-K | 2.02 Results of operations; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-25-000015 |
| 2024-12-3113:09 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0000887343-24-000275 |
| 2024-11-1516:01 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0000887343-24-000265 |
| 2024-11-0516:36 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0000887343-24-000262 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 30, 2026, 18:49 ET. Listed shows no prices and gives no investment advice.