ASPEN AEROGELS INC

Ticker: ASPN CUSIP: 04523Y105 Class: Common Stock

TORTOISE CAPITAL ADVISORS, L.L.C.'s Holding History (CIK: 0001280965)

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

Q4 2016
Shares 57 Value ($000) $0 Avg Close $4.87 Range $3.61 - $6.71
Q3 2016
Shares 57 Value ($000) $0 Avg Close $5.04 Range $4.42 - $6.29
Q2 2016
Shares 57 Value ($000) $0 Avg Close $4.38 Range $3.91 - $5.39
Q1 2016
Shares 57 Value ($000) $0 Avg Close $4.54 Range $3.38 - $6.58
Q4 2015
Shares 57 Value ($000) $0 Avg Close $6.92 Range $5.24 - $8.87
Q3 2015
Shares 57 Value ($000) $0 Avg Close $7.28 Range $6.27 - $9.03
Q2 2015
Shares 21 Value ($000) $0 Avg Close $6.84 Range $6.21 - $7.94
Q1 2015
Shares 69 Value ($000) $1 Avg Close $7.57 Range $6.50 - $8.58