A. Thorson - Jan 27, 2022 Form 4 Insider Report for WESTAMERICA BANCORPORATION (WABC)

Role: SVP/Treasurer
Signature: /s/Jesse Leavitt, attorney-in-fact for Mr. Thorson
Stock symbol: WABC
Transactions as of: Jan 27, 2022
Transactions value $: $1,205,306
Form type: 4
Date filed: 1/31/2022, 07:22 PM
Next filing: Mar 3, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WABC	Common Stock	Award	$0	+1.99K		$0.00	1.99K	Jan 27, 2022	Direct	F1
holding	WABC	Common Stock						903	Jan 27, 2022	Esop
holding	WABC	Common Stock						11.8K	Jan 27, 2022	By Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WABC	Non-qualified Stock Option (Right to Buy)	Award	$1.21M	+20.6K		$58.51	20.6K	Jan 27, 2022	Common Stock	20.6K	$58.51	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The Restricted Performance Shares granted in 2019 have vested upon meeting performance criteria
F2	Options vest ratably over three years beginning one year from date of grant