Westamerica Bancorporation is a California-based bank holding company providing full-range banking services to individuals and commercial customers, with a strategic focus on small business lending, through its subsidiary Westamerica Bank operating across Northern and Central California. The company generates revenue from traditional banking operations including deposits, loans, and related financial services, serving a market that extends from the northern counties of California southward to Kern County. As a bank holding company regulated by the Federal Reserve and subject to state and federal supervision, Westamerica competes with regional and national banks, credit unions, and fintech providers while maintaining capital ratios above regulatory minimums and FDIC-insured deposits.