Aspen Aerogels Ownership & Insider Activity

Aspen Aerogels (ASPN) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 3.4% of shares outstanding. Institutional investors hold 39.2%. Over the past 90 days, insiders made 1 sale worth $58.1M.

Shares Outstanding

82.989M

Shares Float

70.183M

Insider Shares Owned

2.797M

Insider % Owned

3.4%

Institutional Shares Held

32.552M

Institutional % Held

39.2%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$58.1M total

Net Activity

Net Selling

Net Value (90d)

-$58.1M

Aspen Aerogels Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Sep 23, 2026	Wood River Capital LLC, Koch Inc	—	SELL	12.280M	$4.73	$58.1M