WABC - CIK 0000311094
WESTAMERICA BANCORPORATION has filed 1,262 documents with the SEC between 1994 and 2026. The most frequent type is insider trade (544 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Quarterly report | 10-Q | 1997-11-13 | 1997-09-30 |
| Quarterly report | 10-Q | 1997-08-14 | 1997-06-30 |
| NT 11-K | - | 1997-07-01 | 1996-12-31 |
| Employee stock plan | S-8 | 1997-05-27 | - |
| Quarterly report | 10-Q | 1997-05-16 | 1997-03-31 |
| Major company event | 8-K | 1997-04-25 | 1997-04-12 |
| Annual report | 10-K | 1997-03-31 | 1996-12-31 |
| Activist ownership stake | SC 13D | 1997-03-28 | - |
| Proxy statement | DEF 14A | 1997-03-18 | 1997-04-22 |
| 424B3 | - | 1997-01-13 | - |
| S-4/A | - | 1997-01-06 | - |
| S-4 | - | 1996-12-05 | - |
| Activist ownership stake | SC 13D | 1996-11-21 | - |
| Quarterly report | 10-Q | 1996-11-14 | 1996-09-30 |
| Major company event | 8-K | 1996-11-13 | 1996-11-11 |
| Quarterly report | 10-Q | 1996-08-07 | 1996-06-30 |
| Major company event | 8-K | 1996-08-01 | 1996-07-31 |
| Employee plan annual report | 11-K | 1996-06-28 | 1995-12-31 |
| Quarterly report | 10-Q | 1996-05-13 | 1996-03-31 |
| Annual report (amended) | 10-K/A | 1996-05-01 | 1995-12-31 |
| Annual report | 10-K | 1996-03-29 | 1995-12-31 |
| Proxy statement | DEF 14A | 1996-03-20 | 1995-12-31 |
| Major company event | 8-K | 1996-02-23 | 1996-02-21 |
| Quarterly report | 10-Q | 1995-11-13 | 1995-09-30 |
| Annual report (amended) | 10-K/A | 1995-09-13 | 1994-12-31 |
| Quarterly report | 10-Q | 1995-08-14 | 1995-06-30 |
| 15-12G/A | - | 1995-08-02 | - |
| Employee stock plan | S-8 | 1995-08-02 | - |
| Employee plan annual report | 11-K | 1995-06-30 | 1994-12-31 |
| Major company event | 8-K | 1995-06-08 | 1995-06-08 |
| Employee stock plan | S-8 | 1995-06-06 | - |
| Quarterly report | 10-Q | 1995-05-15 | 1995-03-31 |
| 8-A12G/A | - | 1995-03-31 | - |
| Annual report | 10-K | 1995-03-31 | 1994-12-31 |
| Proxy statement | DEF 14A | 1995-03-16 | 1994-12-31 |
| PRE 14A | - | 1995-03-02 | 1994-12-31 |
| 15-12G/A | - | 1995-03-01 | - |
| 424B3 | - | 1995-02-15 | - |
| Passive ownership stake (update) | SC 13G/A | 1995-02-15 | - |
| Major company event | 8-K | 1995-02-13 | 1995-02-13 |
| 424B3 | - | 1995-02-08 | - |
| S-4/A | - | 1995-02-07 | - |
| Major company event | 8-K | 1995-02-06 | 1995-02-03 |
| Employee stock plan | S-8 | 1995-02-02 | - |
| S-4/A | - | 1995-02-01 | - |
| S-4/A | - | 1995-01-30 | - |
| S-4 | - | 1995-01-24 | - |
| S-4 | - | 1994-12-22 | - |
| Major company event | 8-K | 1994-12-22 | 1994-12-16 |
| Major company event | 8-K | 1994-12-20 | 1994-12-19 |