Gregg Landes

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
5 Mar 25	ASPN Aspen Aerogels	Common Stock	Grant	Acquire A	No	No	0	24,713	0.00	53,131
5 Mar 25	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	7.84	936	7.34 k	28,418
5 Mar 25	ASPN Aspen Aerogels	Performance Share Units Common Stock	Grant	Acquire A	No	No	0	49,426	0.00	49,426
5 Mar 25	ASPN Aspen Aerogels	Stock Options Common Stock	Grant	Acquire A	No	No	7.84	34,837	273.12 k	34,837
21 Feb 25	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	8.04	499	4.01 k	29,354
6 May 24	ASPN Aspen Aerogels	Common Stock	Sell	Dispose S	No	No	25.65	25,463	653.13 k	29,853
6 May 24	ASPN Aspen Aerogels	Common Stock	Sell	Dispose S	No	No	25.11	22,923	575.60 k	55,316
8 Mar 24	ASPN Aspen Aerogels	Common Stock	Payment of exercise	Dispose F	No	No	17.02	1,771	30.14 k	78,239
5 Mar 24	ASPN Aspen Aerogels	Common Stock	Sale back to company	Dispose D	No	No	0	53,590	0.00	71,978

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