PROTHENA CORP PLC

Ticker: PRTA CUSIP: G72800108 Class: Common Stock

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q1 2014

Shares 10,400 Value ($000) $398 Avg Close $32.24 Range $24.42 - $49.24

Q4 2013

Shares 10,400 Value ($000) $276 Avg Close $25.08 Range $18.93 - $30.55

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	10,400	$398	$32.24	$24.42 - $49.24
Q4 2013	10,400	$276	$25.08	$18.93 - $30.55