PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Campbell & CO Investment Adviser LLC's Holding History (CIK: 0001353570)

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

Q4 2025

Shares 94,155 Value ($000) $899 Avg Close $10.18 Range $9.07 - $11.69

Q4 2022

Shares 8,527 Value ($000) $514 Avg Close $58.56 Range $50.89 - $66.47

Q3 2022

Shares 8,423 Value ($000) $511 Avg Close $31.61 Range $25.02 - $64.00

Q3 2021

Shares 8,400 Value ($000) $598 Avg Close $62.11 Range $45.09 - $79.75

Q2 2020

Shares 37,046 Value ($000) $388 Avg Close $11.11 Range $9.25 - $12.98

Q3 2019

Shares 47,901 Value ($000) $376 Avg Close $8.88 Range $6.71 - $10.70

Q2 2019

Shares 20,300 Value ($000) $215 Avg Close $10.27 Range $8.67 - $12.54

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	94,155	$899	$10.18	$9.07 - $11.69
Q4 2022	8,527	$514	$58.56	$50.89 - $66.47
Q3 2022	8,423	$511	$31.61	$25.02 - $64.00
Q3 2021	8,400	$598	$62.11	$45.09 - $79.75
Q2 2020	37,046	$388	$11.11	$9.25 - $12.98
Q3 2019	47,901	$376	$8.88	$6.71 - $10.70
Q2 2019	20,300	$215	$10.27	$8.67 - $12.54