PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q2 2023

Shares 6,425 Value ($000) $439 Avg Close $64.50 Range $47.45 - $79.65

Q3 2020

Shares 27,965 Value ($000) $279 Avg Close $12.03 Range $9.67 - $13.78

Q4 2018

Shares 101 Value ($000) $1 Avg Close $11.89 Range $8.63 - $13.83

Q3 2018

Shares 7,200 Value ($000) $94 Avg Close $14.44 Range $12.23 - $15.91

Q2 2018

Shares 34,940 Value ($000) $509 Avg Close $19.75 Range $10.43 - $44.75

Q1 2018

Shares 81,233 Value ($000) $2,982 Avg Close $36.37 Range $27.19 - $46.14

Q4 2017

Shares 5,922 Value ($000) $222 Avg Close $50.91 Range $34.85 - $64.96

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	6,425	$439	$64.50	$47.45 - $79.65
Q3 2020	27,965	$279	$12.03	$9.67 - $13.78
Q4 2018	101	$1	$11.89	$8.63 - $13.83
Q3 2018	7,200	$94	$14.44	$12.23 - $15.91
Q2 2018	34,940	$509	$19.75	$10.43 - $44.75
Q1 2018	81,233	$2,982	$36.37	$27.19 - $46.14
Q4 2017	5,922	$222	$50.91	$34.85 - $64.96