EX-23.1 2 exh_231.htm EXHIBIT 23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-107329 on Form S-8 of Westamerica Bancorporation of our report dated June 26, 2025 appearing in this Annual Report on Form 11-K of Westamerica Bancorporation Tax Deferred Savings/Retirement Plan (ESOP) for the year ended December 31, 2024.

/s/ Crowe LLP

Oakbrook Terrace, Illinois

June 26, 2025