PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

GREAT LAKES ADVISORS, LLC's Holding History (CIK: 0001078013)

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

Q4 2025

Shares 13,189 Value ($000) $126 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 13,284 Value ($000) $130 Avg Close $7.69 Range $5.96 - $9.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	13,189	$126	$10.18	$9.07 - $11.69
Q3 2025	13,284	$130	$7.69	$5.96 - $9.85