| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 3,492,884 | 13.1% | EDGAR |
| SC 13G | 2024-02-12 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,455,759 | 5.5% | EDGAR |
| SC 13G/A | 2024-01-23 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,902,878 | 14.6% | EDGAR |
| SC 13G/A | 2023-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 785,265 | 2.9% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 3,397,651 | 12.6% | EDGAR |
| SC 13G/A | 2023-02-08 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,022,892 | 3.8% | EDGAR |
| SC 13G | 2023-01-24 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,803,079 | 14.1% | EDGAR |
| SC 13G/A | 2022-10-11 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 2,108,682 | 7.8% | EDGAR |
| SC 13G/A | 2022-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 3,643,235 | 13.5% | EDGAR |
| SC 13G/A | 2022-02-10 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 3,109,991 | 11.6% | EDGAR |
| SC 13G/A | 2022-02-04 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,555,253 | 5.8% | EDGAR |
| SC 13G/A | 2022-01-27 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,931,787 | 14.6% | EDGAR |
| SC 13G | 2022-01-25 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,931,787 | 14.6% | EDGAR |
| SC 13G/A | 2021-02-16 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 3,436,470 | 12.7% | EDGAR |
| SC 13G/A | 2021-02-12 | EATON VANCE MANAGEMENT | WESTAMERICA BANCORPORATION | 516,357 | 1.9% | EDGAR |
| SC 13G | 2021-02-11 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,795,433 | 6.7% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 2,968,371 | 11.0% | EDGAR |
| SC 13G/A | 2021-01-26 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,922,806 | 14.6% | EDGAR |
| SC 13G/A | 2020-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 3,058,373 | 11.3% | EDGAR |
| SC 13G/A | 2020-02-12 | EATON VANCE MANAGEMENT | WESTAMERICA BANCORPORATION | 2,203,813 | 8.5% | EDGAR |