INFINITY PHARMACEUTICALS INC

Ticker: INFIQ CUSIP: 45665G303 Class: USD

MASON STREET ADVISORS, LLC's Holding History (CIK: 0001167711)

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

Q4 2013

Shares 110,180 Value ($000) $1,522 Avg Close $14.12 Range $11.57 - $18.35

Q3 2013

Shares 110,180 Value ($000) $1,923 Avg Close $19.15 Range $15.45 - $23.68

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2013	110,180	$1,522	$14.12	$11.57 - $18.35
Q3 2013	110,180	$1,923	$19.15	$15.45 - $23.68