PUMA BIOTECHNOLOGY INC

Ticker: PBYI CUSIP: 74587V107 Class: Common Stock

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2017

Shares 68,985 Value ($000) $6,819 Avg Close $111.90 Range $92.36 - $136.90

Q3 2017

Shares 36,185 Value ($000) $4,333 Avg Close $93.01 Range $71.14 - $120.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	68,985	$6,819	$111.90	$92.36 - $136.90
Q3 2017	36,185	$4,333	$93.01	$71.14 - $120.85