WESTAMERICA BANCORPORATION — All Filings
1,000 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
All
10-K
10-K/A
10-Q
11-K
144
15-12G
15-12G/A
3
4
4/A
424B3
424B5
425
5
8-A12B
8-A12G/A
8-K
8-K/A
ARS
CORRESP
DEF 14A
DEFA14A
DEFR14A
NT 11-K
PRE 14A
S-3ASR
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13G
SC 13G/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SCHEDULE 13G/A | — | 0000102909-26-002674 | Mar 27, 2026 | — |
| ARS | ARS | 0001174947-26-000359 | Mar 13, 2026 | Dec 31, 2025 |
| DEFA14A | DEFA14A | 0001174947-26-000357 | Mar 13, 2026 | — |
| DEF 14A | DEF 14A | 0001174947-26-000355 | Mar 13, 2026 | — |
| 3 | PRIMARY DOCUMENT | 0000311094-26-000042 | Mar 6, 2026 | Feb 26, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000040 | Mar 3, 2026 | Mar 2, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000038 | Mar 2, 2026 | — |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000036 | Mar 2, 2026 | — |
| 10-K | FORM 10-K | 0001171843-26-001195 | Feb 27, 2026 | Dec 31, 2025 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000034 | Feb 25, 2026 | Feb 24, 2026 |
| 5 | PRIMARY DOCUMENT | 0000311094-26-000032 | Feb 4, 2026 | Dec 31, 2025 |
| 5 | PRIMARY DOCUMENT | 0000311094-26-000029 | Feb 4, 2026 | Dec 31, 2025 |
| 3 | PRIMARY DOCUMENT | 0000311094-26-000027 | Jan 30, 2026 | Jan 12, 2026 |
| 4/A | PRIMARY DOCUMENT | 0000311094-26-000023 | Jan 28, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000021 | Jan 26, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000018 | Jan 26, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000015 | Jan 26, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000012 | Jan 26, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000010 | Jan 26, 2026 | Jan 22, 2026 |
| 4 | PRIMARY DOCUMENT | 0000311094-26-000008 | Jan 26, 2026 | Jan 22, 2026 |
| 8-K | FORM 8-K | 0001171843-26-000400 | Jan 23, 2026 | Jan 22, 2026 |
| 8-K | FORM 8-K | 0001171843-26-000384 | Jan 22, 2026 | — |
| 8-K | FORM 8-K | 0001171843-26-000283 | Jan 15, 2026 | — |
| 8-K | FORM 8-K | 0001171843-25-008001 | Dec 18, 2025 | — |
| 10-Q | FORM 10-Q | 0001171843-25-007134 | Nov 7, 2025 | Sep 30, 2025 |
| 8-K | FORM 8-K | 0001171843-25-006626 | Oct 23, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-006484 | Oct 16, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-005325 | Aug 12, 2025 | — |
| S-8 | FORM S-8 | 0001171843-25-005105 | Aug 6, 2025 | — |
| 10-Q | FORM 10-Q | 0001171843-25-005101 | Aug 6, 2025 | Jun 30, 2025 |
| 3 | PRIMARY DOCUMENT | 0001127602-25-019745 | Jul 29, 2025 | Jun 26, 2025 |
| 8-K | FORM 8-K | 0001171843-25-004678 | Jul 24, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-004529 | Jul 17, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001127602-25-019090 | Jul 11, 2025 | Jul 9, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-019027 | Jul 8, 2025 | Jul 3, 2025 |
| 144 | — | 0001921094-25-000756 | Jul 3, 2025 | — |
| 11-K | FORM 11-K | 0001171843-25-004166 | Jun 27, 2025 | Dec 31, 2024 |
| 10-Q | FORM 10-Q | 0001171843-25-003020 | May 9, 2025 | Mar 31, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-012796 | Apr 30, 2025 | Apr 29, 2025 |
| 4 | PRIMARY DOCUMENT | 0001127602-25-012709 | Apr 29, 2025 | Apr 28, 2025 |
| 144 | — | 0001921094-25-000413 | Apr 28, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-002536 | Apr 28, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001127602-25-012614 | Apr 24, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001127602-25-012612 | Apr 24, 2025 | — |
| 4 | PRIMARY DOCUMENT | 0001127602-25-012608 | Apr 24, 2025 | Mar 3, 2025 |
| 144 | — | 0001921094-25-000410 | Apr 24, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-002475 | Apr 24, 2025 | — |
| 8-K | FORM 8-K | 0001171843-25-002298 | Apr 17, 2025 | — |
| ARS | ARS | 0001174947-25-000337 | Mar 14, 2025 | Dec 31, 2024 |
| DEFA14A | DEFA14A | 0001174947-25-000335 | Mar 14, 2025 | — |