PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

East Coast Asset Management, LLC.'s Holding History (CIK: 0001579254)

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

Q2 2013

Shares 3 Value ($000) $0 Avg Close $9.30 Range $6.49 - $14.00

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2013	3	$0	$9.30	$6.49 - $14.00