    <SEC-DOCUMENT>0001174947-25-000337-index.html : 20250314
    <SEC-HEADER>0001174947-25-000337.hdr.sgml : 20250314
    <ACCEPTANCE-DATETIME>20250314093206
    ACCESSION NUMBER:		0001174947-25-000337
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250314
    DATE AS OF CHANGE:		20250314
    EFFECTIVENESS DATE:		20250314

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			WESTAMERICA BANCORPORATION
    		CENTRAL INDEX KEY:			0000311094
    		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
    		ORGANIZATION NAME:           	02 Finance
    		IRS NUMBER:				942156203
    		STATE OF INCORPORATION:			CA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-09383
    		FILM NUMBER:		25737938

    	BUSINESS ADDRESS:
    		STREET 1:		1108 FIFTH AVE
    		CITY:			SAN RAFAEL
    		STATE:			CA
    		ZIP:			94901
    		BUSINESS PHONE:		(707) 863-6000

    	MAIL ADDRESS:
    		STREET 1:		4550 MANGELS BLVD
    		STREET 2:		A-2Y
    		CITY:			FAIRFIELD
    		STATE:			CA
    		ZIP:			94534-4082

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	INDEPENDENT BANKSHARES CORP
    		DATE OF NAME CHANGE:	19830801
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>ars-72822_wabc.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: ars-72822_wabc.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>