Aspen Aerogels Inc.

Last updated September 27, 2026

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Organization details

Legal name: Aspen Aerogels Inc.
Ownership: Public
Status: Active
Sector (GICS): Industrials
SIC code: 5030 — Wholesale-Lumber & Other Construction Materials
Jurisdiction of incorporation: Delaware
Headquarters city: Northborough
Headquarters state / province: Massachusetts
Headquarters country: United States
Fiscal year end: December
Ticker symbol: ASPN
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0001145986
EIN: 04-3559972

Board of directors

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Cari Robinson · Director
Since 2024
Donald R. Young · Director · President and CEO
Since 2023
James E. Sweetnam · Director
Since 2023
Kathleen Kool · Director
Since 2023
Mark L. Noetzel · Director
Since 2023
Rebecca Blalock · Director
Since 2023
Stacy Durbin Nieuwoudt · Director
Since 2026
Steven R. Mitchell · Director
Since 2023
William P. Noglows · Director
Since 2023

Chief executives

Donald R. Young · President and CEO

Dates unknown

Director election results

Annual meeting of May 12, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Steven R. Mitchell

89.3%
Donald R. Young

90.4%

Board connections

4 of this board's directors also sit on 6 other boards. 2 are in the same sector.

Shared director Other board Same sector

Alkami Technology Inc.
via Steven R. Mitchell
Littelfuse Inc. Same sector
via William P. Noglows
ProFrac Holding Corp.
via Stacy Durbin Nieuwoudt
Republic Airways Holdings Inc. Same sector
via James E. Sweetnam
StepStone Group Inc.
via Steven R. Mitchell
enCore Energy Corp.
via Stacy Durbin Nieuwoudt

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $58,270,024; 2 sales by 2 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 4, 2026	Stacy Durbin Nieuwoudt Director	Grant or award	+6,073	—	—
Sep 30, 2026	DEEGAN GLENN E. Officer (CAO, GC & Corp Secretary)	Shares withheld for tax	−1,143	$5.48	$6,264
Sep 23, 2026	Wood River Capital, LLC Former 10% Owner	Open-market sale	−12,280,426	$4.73	$58,086,415
Jun 23, 2026	William P. Noglows Director	Option exercise	+14,799	$4.75	$70,295
May 13, 2026	Steven R. Mitchell Director	Grant or award	+10,370	—	—
May 13, 2026	James E. Sweetnam Director	Grant or award	+10,370	—	—
May 13, 2026	William P. Noglows Director	Grant or award	+10,370	—	—
May 13, 2026	Kathleen Kool Director	Grant or award	+10,370	—	—
May 13, 2026	Cari Robinson Director	Grant or award	+10,370	—	—
Mar 8, 2026	Donald R. Young Director, Officer (President and CEO)	Shares withheld for tax	−4,275	$3.22	$13,766
Mar 8, 2026	Whitaker Corby C Officer (Chief Commercial Officer)	Shares withheld for tax	−1,924	$3.22	$6,195
Mar 8, 2026	Thoele Grant Douglas Officer (CFO & Treasurer)	Shares withheld for tax	−590	$3.22	$1,900
Mar 8, 2026	Landes Gregg Officer (Chief Operating Officer)	Shares withheld for tax	−1,924	$3.22	$6,195
Mar 5, 2026	Daniel Santhosh P Officer (Chief Accounting Officer)	Shares withheld for tax	−986	$3.27	$3,224
Mar 5, 2026	Donald R. Young Director, Officer (President and CEO)	Shares withheld for tax	−8,618	$3.27	$28,181

Peers

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Questions about Aspen Aerogels Inc.

Who is the CEO of Aspen Aerogels Inc.?

Donald R. Young is Aspen Aerogels Inc.'s President and CEO.

How many directors are on Aspen Aerogels Inc.'s board?

Aspen Aerogels Inc.'s board has 9 directors: Cari Robinson, Donald R. Young, James E. Sweetnam, Kathleen Kool, Mark L. Noetzel, Rebecca Blalock, Stacy Durbin Nieuwoudt, Steven R. Mitchell and William P. Noglows.

Are Aspen Aerogels Inc. insiders buying or selling shares?

Over the last 12 months, Aspen Aerogels Inc. insiders made no open-market purchases and sold $58.3 million of shares in 2 sales on the open market, as reported to the SEC on Forms 4 and 5.

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