Gregg Landes

Currently holds a position at Aspen Aerogels Inc

1.9

1.9

Position	Company	Period
Senior Vice President, Operations and Strategic Development	Aspen Aerogels Inc	Oct. 30, 2019 -
Vice President, Innovation & Strategic Development	Aspen Aerogels Inc	Jan. 1, 2017 - Oct. 30, 2019

• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings

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Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other

Notification date	Transaction date	Company	B/S Transaction type	Nb. shares Price Value	Number of shares	Price	Value
2024-05-08	2024-05-06	Aspen Aerogels Inc (ASPN)	S Sale	69,209 -19.2% 156.01 US$2,402,390	69,209 -19.2%	156.01	US$2,402,390
2024-05-08	2024-05-06	Aspen Aerogels Inc (ASPN)	S Sale	53,478 +16.5% 313.17 US$1,843,725	53,478 +16.5%	313.17	US$1,843,725
2023-11-20	2023-11-20	Aspen Aerogels Inc (ASPN)	S Sale	530 +47.1% 396.74 US$4,246,716	530 +47.1%	396.74	US$4,246,716
2020-11-20	2020-11-18	Aspen Aerogels Inc (ASPN)	S Sale	27,308 -28.8% 11.61 US$317,046	27,308 -28.8%	11.61	US$317,046