Company Story
1993 - Westamerica Bancorporation was formed through the merger of First National Bank of San Rafael and First National Bank of Vallejo.
1994 - The company completed its initial public offering (IPO) and began trading on the NASDAQ stock exchange.
1995 - Westamerica acquired the Bank of Napa.
1997 - The company acquired the Bank of Yolo.
2000 - Westamerica acquired the Bank of Rio Vista.
2003 - The company acquired the Bank of Amador.
2006 - Westamerica acquired the Mother Lode Bank.
2012 - The company acquired the Premiere Pacific Bank.
2017 - Westamerica Bancorporation merged with the Mother Lode Bank, expanding its presence in the Sierra Nevada foothills.