WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

ACADIAN ASSET MANAGEMENT LLC's Holding History (CIK: 0000916542)

Note: Option positions (PUT/CALL) are excluded.

Q1 2023

Shares 10,449 Value ($000) $0 Avg Close $47.96 Range $39.01 - $52.93

Q4 2022

Shares 30,501 Value ($000) $2 Avg Close $52.03 Range $45.87 - $56.69

Q3 2022

Shares 18,472 Value ($000) $965 Avg Close $50.12 Range $46.08 - $54.37

Q2 2022

Shares 11,478 Value ($000) $639 Avg Close $51.14 Range $48.47 - $53.70

Q1 2022

Shares 11,478 Value ($000) $693 Avg Close $51.69 Range $48.38 - $55.12

Q4 2021

Shares 10,888 Value ($000) $628 Avg Close $48.46 Range $45.96 - $50.44

Q3 2021

Shares 10,888 Value ($000) $612 Avg Close $48.00 Range $45.58 - $50.22

Q2 2021

Shares 30,851 Value ($000) $1,788 Avg Close $52.96 Range $48.87 - $55.24

Q1 2021

Shares 45,104 Value ($000) $2,833 Avg Close $51.31 Range $45.76 - $56.46

Q4 2020

Shares 39,451 Value ($000) $2,182 Avg Close $46.10 Range $42.70 - $50.73

Q3 2020

Shares 37,144 Value ($000) $2,019 Avg Close $48.57 Range $43.00 - $54.06

Q2 2020

Shares 47,772 Value ($000) $2,745 Avg Close $48.00 Range $42.78 - $54.53

Q1 2020

Shares 47,772 Value ($000) $2,809 Avg Close $50.93 Range $38.54 - $56.36

Q4 2019

Shares 31,298 Value ($000) $2,121 Avg Close $53.22 Range $48.47 - $56.23

Q3 2019

Shares 27,566 Value ($000) $1,714 Avg Close $50.16 Range $47.48 - $52.86

Q2 2019

Shares 26,534 Value ($000) $1,634 Avg Close $49.98 Range $47.55 - $52.33

Q1 2019

Shares 6,722 Value ($000) $415 Avg Close $49.51 Range $43.81 - $52.00

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	10,449	$0	$47.96	$39.01 - $52.93
Q4 2022	30,501	$2	$52.03	$45.87 - $56.69
Q3 2022	18,472	$965	$50.12	$46.08 - $54.37
Q2 2022	11,478	$639	$51.14	$48.47 - $53.70
Q1 2022	11,478	$693	$51.69	$48.38 - $55.12
Q4 2021	10,888	$628	$48.46	$45.96 - $50.44
Q3 2021	10,888	$612	$48.00	$45.58 - $50.22
Q2 2021	30,851	$1,788	$52.96	$48.87 - $55.24
Q1 2021	45,104	$2,833	$51.31	$45.76 - $56.46
Q4 2020	39,451	$2,182	$46.10	$42.70 - $50.73
Q3 2020	37,144	$2,019	$48.57	$43.00 - $54.06
Q2 2020	47,772	$2,745	$48.00	$42.78 - $54.53
Q1 2020	47,772	$2,809	$50.93	$38.54 - $56.36
Q4 2019	31,298	$2,121	$53.22	$48.47 - $56.23
Q3 2019	27,566	$1,714	$50.16	$47.48 - $52.86
Q2 2019	26,534	$1,634	$49.98	$47.55 - $52.33
Q1 2019	6,722	$415	$49.51	$43.81 - $52.00