PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND's Holding History (CIK: 0001535845)

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

Q3 2023

Shares 30,500 Value ($000) $1,472 Avg Close $59.41 Range $45.22 - $73.14

Q1 2022

Shares 16,800 Value ($000) $614 Avg Close $36.05 Range $29.53 - $49.77

Q4 2021

Shares 52,800 Value ($000) $2,608 Avg Close $55.45 Range $40.50 - $74.32

Q3 2020

Shares 18,700 Value ($000) $187 Avg Close $12.03 Range $9.67 - $13.78

Q2 2020

Shares 74,500 Value ($000) $779 Avg Close $11.11 Range $9.25 - $12.98

Q1 2020

Shares 74,500 Value ($000) $797 Avg Close $12.11 Range $7.10 - $16.05

Q4 2019

Shares 110,800 Value ($000) $1,754 Avg Close $10.72 Range $7.40 - $17.63

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	30,500	$1,472	$59.41	$45.22 - $73.14
Q1 2022	16,800	$614	$36.05	$29.53 - $49.77
Q4 2021	52,800	$2,608	$55.45	$40.50 - $74.32
Q3 2020	18,700	$187	$12.03	$9.67 - $13.78
Q2 2020	74,500	$779	$11.11	$9.25 - $12.98
Q1 2020	74,500	$797	$12.11	$7.10 - $16.05
Q4 2019	110,800	$1,754	$10.72	$7.40 - $17.63