ASPEN AEROGELS INC

Ticker: ASPN CUSIP: 04523Y105 Class: Common Stock

Magnetar Financial LLC's Holding History (CIK: 0001352851)

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

Q2 2014

Shares 30,000 Value ($000) $332 Avg Close $10.85 Range $10.25 - $11.74

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	30,000	$332	$10.85	$10.25 - $11.74