Westamerica Bancorporation is a bank holding company. Through its wholly owned subsidiary, Westamerica Bank, the company operates more than 85 branches and several trust offices throughout more than 20 California counties. The company s personal banking products include certificates of deposit, checking and savings accounts, loans and lines of credit and trust services. Its business banking products and services include a wide variety of deposit accounts, merchant card services, automated clearing house origination, loans and lines of credit, investment services and trust services. Westamerica Bancorporation is a publicly traded company. Its shares are listed on the NASDAQ Stock Market under the ticker symbol WABC. The company is headquartered in San Rafael, Calif.