PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q2 2015

Shares 9,321 Value ($000) $491 Avg Close $39.47 Range $30.14 - $55.97

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2015	9,321	$491	$39.47	$30.14 - $55.97