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美国

证券交易委员会

华盛顿特区 20549

_________________

表格 8-K

_________________

当前报告

根据《1934年证券交易法》第13或15(d)条

报告日期（最早事件报告日期）： 2026年10月15日

_______________________________

WESTAMERICA BANCORPORATION

(注册人章程中指定的准确名称)

_______________________________

加利福尼亚州	001-09383	94-2156203
(成立的州或其他司法管辖区)	(委员会文件编号)	(I.R.S. 雇主识别编号)

1108 Fifth Avenue

San Rafael, California 94901

(主要执行办公室地址) (邮政编码)

(707) 863-6000

(注册人的电话号码，包括地区代码)

不适用

(如果自上次报告以来名称或地址有所更改，请填写原名称或原地址)

_______________________________

如果本8-K表格的提交旨在同时满足注册人根据以下任何规定下的提交义务，请在下面的适当方框中打勾：

☐	根据《证券法》第425条的书面沟通（17 CFR 230.425）
☐	根据《交易法》第14a-12条的征求材料（17 CFR 240.14a-12）
☐	根据《交易法》第14d-2(b)条的开始前沟通（17 CFR 240.14d-2(b))
☐	根据《交易法》第13e-4(c)条的开始前沟通（17 CFR 240.13e-4(c))

根据《法案》第12(b)条注册的证券：

每类证券的名称	交易符号	每种证券的注册交易所名称
无面值普通股	WABC	纳斯达克股票市场有限责任公司

通过勾选方框表明注册人是否是根据《1933年证券法》第405条（§230.405本章）或《1934年证券交易法》第12b-2条（§240.12b-2本章）定义的新兴成长公司。

新兴成长公司 ☐

如果为新兴成长公司，请通过勾选方框表明注册人是否已选择不使用根据《交易法》第13(a)条提供的任何新修订的财务会计标准的延长过渡期。 ☐

2.02项：经营成果和财务状况。

2026年10月15日，注册人发布了一则新闻稿，其副本作为附件99.1附于此，并在此引用作为参考。

9.01项：财务报表和附件。

附件99.1		2026年10月15日的新闻稿
附件104		封面页交互式数据文件（嵌入在内联XBRL文档中）

签名

根据《1934年证券交易法》的要求，注册人已 duly 促使本报告由在此 duly 授权的代表签署。

	WESTAMERICA BANCORPORATION


日期：2026年10月15日	由：	/s/ Anela Jonas
		Anela Jonas
		高级副总裁兼首席财务官

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