WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025

Shares 295,388 Value ($000) $14,128 Avg Close $47.37 Range $44.09 - $50.85

Q3 2025

Shares 302,136 Value ($000) $15,104 Avg Close $48.41 Range $45.39 - $50.63

Q2 2025

Shares 309,953 Value ($000) $15,014 Avg Close $46.41 Range $40.44 - $50.21

Q1 2025

Shares 165,548 Value ($000) $8,382 Avg Close $48.88 Range $46.41 - $51.42

Q4 2024

Shares 158,384 Value ($000) $8,309 Avg Close $50.92 Range $44.42 - $57.25

Q3 2024

Shares 172,479 Value ($000) $8,524 Avg Close $47.96 Range $44.53 - $54.88

Q2 2024

Shares 176,867 Value ($000) $9 Avg Close $44.71 Range $41.94 - $47.91

Q1 2024

Shares 186,342 Value ($000) $9 Avg Close $44.93 Range $40.74 - $52.58

Q4 2023

Shares 128,424 Value ($000) $7 Avg Close $45.49 Range $38.59 - $53.38

Q3 2023

Shares 58,183 Value ($000) $3 Avg Close $40.65 Range $34.46 - $45.59

Q2 2023

Shares 34,730 Value ($000) $1 Avg Close $36.02 Range $31.77 - $39.59

Q4 2019

Shares 32,238 Value ($000) $2,185 Avg Close $53.22 Range $48.47 - $56.23

Q3 2019

Shares 20,738 Value ($000) $1,289 Avg Close $50.16 Range $47.48 - $52.86

Q2 2019

Shares 26,518 Value ($000) $1,634 Avg Close $49.98 Range $47.55 - $52.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	295,388	$14,128	$47.37	$44.09 - $50.85
Q3 2025	302,136	$15,104	$48.41	$45.39 - $50.63
Q2 2025	309,953	$15,014	$46.41	$40.44 - $50.21
Q1 2025	165,548	$8,382	$48.88	$46.41 - $51.42
Q4 2024	158,384	$8,309	$50.92	$44.42 - $57.25
Q3 2024	172,479	$8,524	$47.96	$44.53 - $54.88
Q2 2024	176,867	$9	$44.71	$41.94 - $47.91
Q1 2024	186,342	$9	$44.93	$40.74 - $52.58
Q4 2023	128,424	$7	$45.49	$38.59 - $53.38
Q3 2023	58,183	$3	$40.65	$34.46 - $45.59
Q2 2023	34,730	$1	$36.02	$31.77 - $39.59
Q4 2019	32,238	$2,185	$53.22	$48.47 - $56.23
Q3 2019	20,738	$1,289	$50.16	$47.48 - $52.86
Q2 2019	26,518	$1,634	$49.98	$47.55 - $52.33