PUMA BIOTECHNOLOGY INC

Ticker: PBYI CUSIP: 74587V107 Class: Common Stock

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q3 2015

Shares 221,356 Value ($000) $16,681 Avg Close $94.57 Range $70.39 - $119.36

Q2 2015

Shares 218,048 Value ($000) $25,457 Avg Close $181.09 Range $112.32 - $244.90

Q1 2015

Shares 121,624 Value ($000) $28,717 Avg Close $213.77 Range $183.50 - $252.92

Q2 2013

Shares 184,600 Value ($000) $8,191 Avg Close $35.25 Range $27.40 - $45.69

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	221,356	$16,681	$94.57	$70.39 - $119.36
Q2 2015	218,048	$25,457	$181.09	$112.32 - $244.90
Q1 2015	121,624	$28,717	$213.77	$183.50 - $252.92
Q2 2013	184,600	$8,191	$35.25	$27.40 - $45.69