Corby C Whitaker

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
6 May 24	ASPN Aspen Aerogels	Common Stock	Sell	Dispose S	No	No	25.01	55,159	1.38 mm	131,533
6 May 24	ASPN Aspen Aerogels	Common Stock	Option exercise	Acquire M	No	No	3.63	55,159	200.23 k	186,692
6 May 24	ASPN Aspen Aerogels	Stock Options Common Stock	Option exercise	Dispose M	No	No	3.63	55,159	200.23 k	0
8 Mar 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	17.02	1,768	30.09 k	131,533
5 Mar 24	ASPN Aspen Aerogels	Common Stock	Grant	Acquire A	No	No	0	8,032	0.00	133,301
5 Mar 24	ASPN Aspen Aerogels	Stock Options Common Stock	Grant	Dispose 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	125,269
24 Feb 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	16.96	330	5.60 k	162,290
23 Feb 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	16.96	495	8.40 k	162,620

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