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Aspen Aerogels

Aspen Aerogels (NYSE: ASPN) insider transactions

In the twelve months to 10 November 2026, executives and directors of Aspen Aerogels reported 2 open-market sales of 12,337,271 shares ($58.3m) and 0 open-market purchases, by 2 people, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Aspen Aerogels shares reported on Form 4
DateInsiderRoleTransactionSharesPriceHeld afterFiling
4 November 2026Nieuwoudt Stacy DurbinDirectorGrant or award+6,073—6,073Form 4
30 September 2026Deegan Glenn E.CAO, GC & Corp SecretaryShares withheld for tax−1,143$5.4866,033Form 4
23 September 2026Wood River Capital, LLC—Open-market sale−12,280,426$4.730Form 4
23 June 2026Noglows William PDirectorOption exercise+14,799$4.75114,156Form 4
13 May 2026Robinson CariDirectorGrant or award+10,370—22,616Form 4
13 May 2026Kool KathleenDirectorGrant or award+10,370—34,323Form 4
13 May 2026Noglows William PDirectorGrant or award+10,370—99,357Form 4
13 May 2026Sweetnam James EDirectorGrant or award+10,370—36,321Form 4
13 May 2026Mitchell Steven RDirectorGrant or award+10,370—156,898Form 4
8 March 2026Landes GreggChief Operating OfficerShares withheld for tax−1,924$3.22102,931Form 4
8 March 2026Thoele Grant DouglasCFO & TreasurerShares withheld for tax−590$3.2277,732Form 4
8 March 2026Whitaker Corby CChief Commercial OfficerShares withheld for tax−1,924$3.22205,315Form 4
8 March 2026Young Donald RPresident and CEOShares withheld for tax−4,275$3.22637,834Form 4
5 March 2026Thoele Grant DouglasCFO & TreasurerShares withheld for tax−2,368$3.2778,322Form 4
5 March 2026Daniel Santhosh PChief Accounting OfficerShares withheld for tax−986$3.2715,330Form 4
5 March 2026Whitaker Corby CSVP, Sales and MarketingShares withheld for tax−3,907$3.27207,239Form 4
5 March 2026Landes GreggSVP, Operations and Strat DeveShares withheld for tax−3,814$3.27104,855Form 4
5 March 2026Young Donald RPresident and CEOShares withheld for tax−8,618$3.27642,109Form 4
4 March 2026Thoele Grant DouglasCFO & TreasurerGrant or award+55,298—80,690Form 4
4 March 2026Whitaker Corby CSVP, Sales and MarketingGrant or award+57,462—211,146Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Aspen Aerogels page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.