PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Summit Trail Advisors, LLC's Holding History (CIK: 0001698478)

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

Q3 2021

Shares 3,000 Value ($000) $214 Avg Close $62.11 Range $45.09 - $79.75

Q2 2018

Shares 605 Value ($000) $9 Avg Close $19.75 Range $10.43 - $44.75

Q4 2017

Shares 744 Value ($000) $31 Avg Close $50.91 Range $34.85 - $64.96

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2021	3,000	$214	$62.11	$45.09 - $79.75
Q2 2018	605	$9	$19.75	$10.43 - $44.75
Q4 2017	744	$31	$50.91	$34.85 - $64.96