PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

ADAR1 Capital Management, LLC's Holding History (CIK: 0001940272)

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

Q4 2025

Shares 1,457,764 Value ($000) $13,922 Avg Close $10.18 Range $9.07 - $11.69

Q3 2025

Shares 1,469,098 Value ($000) $14,338 Avg Close $7.69 Range $5.96 - $9.85

Q2 2025

Shares 3,375,009 Value ($000) $20,486 Avg Close $7.50 Range $4.32 - $12.45

Q2 2024

Shares 5,988 Value ($000) $124 Avg Close $21.64 Range $18.69 - $26.36

Q1 2024

Shares 5,988 Value ($000) $148 Avg Close $29.75 Range $24.25 - $41.55

Q4 2023

Shares 6,102 Value ($000) $222 Avg Close $38.49 Range $28.51 - $55.89

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,457,764	$13,922	$10.18	$9.07 - $11.69
Q3 2025	1,469,098	$14,338	$7.69	$5.96 - $9.85
Q2 2025	3,375,009	$20,486	$7.50	$4.32 - $12.45
Q2 2024	5,988	$124	$21.64	$18.69 - $26.36
Q1 2024	5,988	$148	$29.75	$24.25 - $41.55
Q4 2023	6,102	$222	$38.49	$28.51 - $55.89