Keith L Schilling

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
1 Nov 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	18.05	349	6.30 k	28,443
13 May 24	ASPN Aspen Aerogels	Common Stock	Sell	Dispose S	No	No	27.42	500	13.71 k	28,792
13 May 24	ASPN Aspen Aerogels	Common Stock	Sell	Dispose S	No	No	26.83	19,500	523.18 k	29,292
13 May 24	ASPN Aspen Aerogels	Common Stock	Option exercise	Acquire M	No	No	6.81	20,000	136.20 k	48,792
13 May 24	ASPN Aspen Aerogels	Stock Options Common Stock	Option exercise	Dispose M	No	No	6.81	20,000	136.20 k	55,979
8 Mar 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	17.02	2,045	34.81 k	28,792
5 Mar 24	ASPN Aspen Aerogels	Common Stock	Grant	Acquire A	No	No	0	8,032	0.00	30,837
5 Mar 24	ASPN Aspen Aerogels	Stock Options Common Stock	Grant	Acquire A	No	No	16.34	35,249	575.97 k	35,249
5 Mar 24	ASPN Aspen Aerogels	Common Stock	Sale back to company	Dispose D	No	No	0	53,590	0.00	22,805

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.