Westamerica Bancorporation is a bank holding company headquartered in San Rafael, California, that operates through its wholly owned subsidiary, Westamerica Bank. The company provides a full spectrum of commercial and consumer banking services designed to support individuals, small businesses and professional practices throughout Northern and Central California. With a focus on relationship-driven banking, Westamerica offers personalized solutions across deposit accounts, lending services and cash management products.
The company’s lending portfolio includes commercial real estate and construction financing, term loans, lines of credit and equipment financing for businesses, as well as residential mortgage loans and home equity lines for consumers. Westamerica also extends treasury and cash management services, enabling clients to optimize liquidity, streamline collections and disburse funds efficiently via ACH origination, remote deposit capture and online account tools.
In addition to traditional banking, Westamerica Bancorporation provides trust and wealth management services through its trust department. Clients benefit from comprehensive estate planning, fiduciary administration, investment management and retirement planning. The company’s trust professionals work closely with individuals, families and institutions to develop strategies that preserve and transfer wealth over multiple generations.
Founded in the early 1980s through the consolidation of several community banks, Westamerica has steadily grown its branch network across the North Coast and Central Valley, including key markets such as Marin, Sonoma, Napa and Santa Barbara counties. Under the leadership of President and Chief Executive Officer Donald C. Dickson, the bank emphasizes disciplined credit management, strong customer relationships and local decision-making authority. This community-focused approach has helped Westamerica maintain consistent profitability and resilience through various economic cycles.
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