WESTAMERICA BANCORPORATION

For the period ended Dec 31, 2025. Filed Feb 27, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 27, 2026

WABC$60.05+0.4%Stored close · as of Nov 9, 2026

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Signatures

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

WESTAMERICA BANCORPORATION

/s/ Anela Jonas

Anela Jonas

Senior Vice President

and Chief Financial Officer

(Principal Financial and Accounting Officer)

Date: February 27, 2026

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the date indicated.

Alisa Belew
Signature	Title	Date
/s/ David L. Payne	Chairman of the Board and Directors	February 27, 2026
David L. Payne	President and Chief Executive Officer (Principal Executive Officer)
/s/ Anela Jonas	Senior Vice President and Chief Financial Officer	February 27, 2026
Anela Jonas	(Principal Financial and Accounting Officer)
/s/ Alisa Belew	Director	February 27, 2026
/s/ Martin Camsey	Director	February 27, 2026
Martin Camsey
/s/ Melanie Martella Chiesa	Director	February 27, 2026
Melanie Martella Chiesa
/s/ Michele Hassid	Director	February 27, 2026
Michele Hassid
/s/ Edward B. Sylvester	Lead Independent Director	February 27, 2026
Edward B. Sylvester
/s/ Carter Welch	Director	February 27, 2026
Carter Welch
/s/ Inez Wondeh	Director	February 27, 2026
Inez Wondeh

-96-

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