PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

MARTINGALE ASSET MANAGEMENT L P's Holding History (CIK: 0000936944)

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

Q4 2025

Shares 63,453 Value ($000) $606 Avg Close $10.18 Range $9.07 - $11.69

Q3 2023

Shares 12,415 Value ($000) $599 Avg Close $59.41 Range $45.22 - $73.14

Q2 2023

Shares 11,318 Value ($000) $773 Avg Close $64.50 Range $47.45 - $79.65

Q3 2020

Shares 44,635 Value ($000) $446 Avg Close $12.03 Range $9.67 - $13.78

Q2 2020

Shares 105,335 Value ($000) $1,102 Avg Close $11.11 Range $9.25 - $12.98

Q1 2015

Shares 7,301 Value ($000) $279 Avg Close $25.65 Range $18.76 - $45.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	63,453	$606	$10.18	$9.07 - $11.69
Q3 2023	12,415	$599	$59.41	$45.22 - $73.14
Q2 2023	11,318	$773	$64.50	$47.45 - $79.65
Q3 2020	44,635	$446	$12.03	$9.67 - $13.78
Q2 2020	105,335	$1,102	$11.11	$9.25 - $12.98
Q1 2015	7,301	$279	$25.65	$18.76 - $45.00