PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Quadrature Capital Ltd's Holding History (CIK: 0001651424)

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

Q4 2025

Shares 31,090 Value ($000) $297 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 27,215 Value ($000) $265 Avg Close $7.69 Range $5.96 - $9.85

Q2 2025

Shares 23,752 Value ($000) $144 Avg Close $7.50 Range $4.32 - $12.45

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	31,090	$297	$10.18	$9.07 - $11.69
Q3 2025	27,215	$265	$7.69	$5.96 - $9.85
Q2 2025	23,752	$144	$7.50	$4.32 - $12.45