Aspen Aerogels Inc. (ASPN) Insider Trading

Last 12 months

Insiders sold $184k and bought nothing on the open market.

All of the selling was scheduled in advance under 10b5-1 plans. The last open-market buy by an executive or director was in May 2025.

Net open-market

−$184k

0 buys · 1 sale

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

0 / 1

executives and directors

Last open-market buy

May 2025

May 12, 2025

Get an email when ASPN's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 23	Wood River Capital, LLC Large holder	SoldNo plan	12,280,426	$4.73	$58.1M	100%	Form 4
Nov 13, 2025	Donald R Young President and CEO	Sold10b5-1 plan	56,845	$3.23	$184k	10%	Form 4
Aug 12, 2025 – Aug 13, 2025	Santhosh P Daniel Chief Accounting Officer	SoldNo plan 2 parts	6,410	$7.38 average	$47k	26%	Form 4
May 12, 2025	Donald R Young President and CEO	Bought	20,000	$5.35	$107k	3.8%	Form 4

Sep 23No plan
Wood River Capital, LLC
Large holder · sold 12,280,426 at $4.73
$58.1M
100% of stake
Nov 13, 202510b5-1 plan
Donald R Young
President and CEO · sold 56,845 at $3.23
$184k
10% of stake
Aug 12, 2025 – Aug 13, 2025No plan
Santhosh P Daniel
Chief Accounting Officer · sold 6,410 at avg $7.38
$47k
26% of stake
May 12, 2025
Donald R Young
President and CEO · bought 20,000 at $5.35
$107k
3.8% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ASPN, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in ASPN's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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