| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 3,132,558 | 11.6% | EDGAR |
| SC 13G/A | 2020-02-11 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 836,627 | 3.1% | EDGAR |
| SC 13G/A | 2020-02-04 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,789,359 | 14.0% | EDGAR |
| SC 13G/A | 2019-07-10 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 2,752,752 | 10.2% | EDGAR |
| SC 13G/A | 2019-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 2,533,432 | 9.4% | EDGAR |
| SC 13G/A | 2019-02-14 | EATON VANCE MANAGEMENT | WESTAMERICA BANCORPORATION | 2,321,961 | 8.7% | EDGAR |
| SC 13G/A | 2019-02-11 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,582,402 | 5.9% | EDGAR |
| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 2,976,041 | 11.1% | EDGAR |
| SC 13G/A | 2019-01-31 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,905,617 | 14.6% | EDGAR |
| SC 13G/A | 2018-02-14 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 2,241,564 | 8.5% | EDGAR |
| SC 13G/A | 2018-02-14 | EATON VANCE MANAGEMENT | WESTAMERICA BANCORPORATION | 2,345,696 | 8.9% | EDGAR |
| SC 13G/A | 2018-02-09 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,669,222 | 6.3% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 2,749,499 | 10.4% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 3,396,214 | 12.9% | EDGAR |
| SC 13G/A | 2017-08-10 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 2,651,411 | 10.1% | EDGAR |
| SC 13G/A | 2017-02-15 | EATON VANCE MANAGEMENT | WESTAMERICA BANCORPORATION | 2,413,519 | 9.4% | EDGAR |
| SC 13G/A | 2017-02-10 | AMERICAN CENTURY INVESTMENT MANAGEMENT INC | WESTAMERICA BANCORPORATION | 1,529,597 | 6.0% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | WESTAMERICA BANCORPORATION | 2,197,036 | 8.6% | EDGAR |
| SC 13G/A | 2017-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | WESTAMERICA BANCORPORATION | 2,193,328 | 8.5% | EDGAR |
| SC 13G/A | 2017-01-17 | BlackRock Inc. | WESTAMERICA BANCORPORATION | 2,930,402 | 11.4% | EDGAR |