PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Susquehanna Portfolio Strategies, LLC's Holding History (CIK: 0001996449)

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

Q4 2025

Shares 58,853 Value ($000) $562 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 28,975 Value ($000) $283 Avg Close $7.69 Range $5.96 - $9.85

Q2 2025

Shares 71,668 Value ($000) $435 Avg Close $7.50 Range $4.32 - $12.45

Q4 2023

Shares 20,158 Value ($000) $733 Avg Close $38.49 Range $28.51 - $55.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	58,853	$562	$10.18	$9.07 - $11.69
Q3 2025	28,975	$283	$7.69	$5.96 - $9.85
Q2 2025	71,668	$435	$7.50	$4.32 - $12.45
Q4 2023	20,158	$733	$38.49	$28.51 - $55.89