PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

BRIGHTON JONES LLC's Holding History (CIK: 0001360798)

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

Q1 2023

Shares 5,012 Value ($000) $243 Avg Close $52.83 Range $45.06 - $60.82

Q4 2022

Shares 5,006 Value ($000) $302 Avg Close $58.56 Range $50.89 - $66.47

Q3 2022

Shares 5,001 Value ($000) $303 Avg Close $31.61 Range $25.02 - $64.00

Q3 2021

Shares 4,000 Value ($000) $285 Avg Close $62.11 Range $45.09 - $79.75

Q2 2021

Shares 4,000 Value ($000) $206 Avg Close $31.20 Range $21.30 - $59.74

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	5,012	$243	$52.83	$45.06 - $60.82
Q4 2022	5,006	$302	$58.56	$50.89 - $66.47
Q3 2022	5,001	$303	$31.61	$25.02 - $64.00
Q3 2021	4,000	$285	$62.11	$45.09 - $79.75
Q2 2021	4,000	$206	$31.20	$21.30 - $59.74