ASPEN AEROGELS INC

Ticker: ASPN CUSIP: 04523Y105 Class: Common Stock

ACK Asset Management LLC's Holding History (CIK: 0001510940)

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

Q3 2014

Shares 204,100 Value ($000) $2,057 Avg Close $10.13 Range $8.04 - $11.56

Q2 2014

Shares 200,000 Value ($000) $2,210 Avg Close $10.85 Range $10.25 - $11.74

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2014	204,100	$2,057	$10.13	$8.04 - $11.56
Q2 2014	200,000	$2,210	$10.85	$10.25 - $11.74