WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

T. Rowe Price Investment Management, Inc.'s Holding History (CIK: 0001897612)

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

Q4 2025

Shares 215,771 Value ($000) $10 Avg Close $47.37 Range $44.09 - $50.85

Q3 2025

Shares 246,529 Value ($000) $12 Avg Close $48.41 Range $45.39 - $50.63

Q2 2025

Shares 249,806 Value ($000) $12 Avg Close $46.41 Range $40.44 - $50.21

Q1 2025

Shares 373,072 Value ($000) $19 Avg Close $48.88 Range $46.41 - $51.42

Q4 2024

Shares 391,932 Value ($000) $21 Avg Close $50.92 Range $44.42 - $57.25

Q3 2024

Shares 480,824 Value ($000) $24 Avg Close $47.96 Range $44.53 - $54.88

Q2 2024

Shares 459,873 Value ($000) $22 Avg Close $44.71 Range $41.94 - $47.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	215,771	$10	$47.37	$44.09 - $50.85
Q3 2025	246,529	$12	$48.41	$45.39 - $50.63
Q2 2025	249,806	$12	$46.41	$40.44 - $50.21
Q1 2025	373,072	$19	$48.88	$46.41 - $51.42
Q4 2024	391,932	$21	$50.92	$44.42 - $57.25
Q3 2024	480,824	$24	$47.96	$44.53 - $54.88
Q2 2024	459,873	$22	$44.71	$41.94 - $47.91