Westamerica Bancorporation's GAAP net income for 6 months of 2021 was $42.726 million, up 17% from $36.524 million in the prior year. 2021 was $42.726 million, up 17% from $36.524 million in the prior year. Net interest income increased 6.2% to $85.633 million from $80.653 million a year earlier.