United States · Funded startup

Who invested in Aspen Aerogels

6 rounds we have observed, with the 7 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Funding summaryUpdated 26 Oct 2026

$136Mraised across 6 rounds since 2008, from 6 sources

$37MSeries D$22MVenture$30MVenture$15MDebt$10MDebt$23MDebt
Latest round
Debt, $23MMay 2013
Biggest round
$37MSeries D · Jun 2008
Step-upi
2.3×
Investors
7
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20092010201120122013
$37MSeries D$22MVenture$30MVenture$15MDebt$10MDebt$23MDebt
First round
Series D, $37M
Jun 2008
Biggest round
$37M
Series D · Jun 2008
Usual gap between rounds
8 months
the median of 5

The rounds

  1. May 2013
    Debt$23M

    No investor was named in the report.

    Reported by pevc.dowjones.comSEC filing: $12M sold, first sale Mar 2013

  2. Jun 2012
    Debt$10M

    No investor was named in the report.

    Reported by masshightech.comSEC filing: $9.6M sold, first sale Jun 2012

  3. Dec 2011
    Debt$15M

    No investor was named in the report.

    Reported by masshightech.comSEC filing: $15M sold, first sale Dec 2011

  4. Jun 2011
    Venture$30M

    No investor was named in the report.

    Reported by masshightech.comSEC filing: $30M sold, first sale Jun 2011

  5. Oct 2010
  6. Jun 2008

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Everyone who backed them

RockPort CapitalVC firm2rounds
Arcapita VenturesVC firm2rounds
Reservoir Capital GroupInvestment firm2rounds
Tenaya CapitalVC firm1round
Lehman BrothersHedge fund1round
BASF Venture CapitalCorporate VC1round
Argonaut Private EquityPrivate equity1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about Aspen Aerogels

Who invested in Aspen Aerogels?

Aspen Aerogels's investors include RockPort Capital, Arcapita Ventures, Reservoir Capital Group, Tenaya Capital and Lehman Brothers, and 2 more on record.

How much has Aspen Aerogels raised?

Aspen Aerogels has raised $136M across 6 rounds since 2008.

When did Aspen Aerogels last raise?

Aspen Aerogels's most recent round was a Debt of $23M in May 2013.

What was Aspen Aerogels's biggest round?

Aspen Aerogels's largest round on record is $37M (Series D), in Jun 2008.

Who backed Aspen Aerogels first?

Aspen Aerogels's first round on record, in Jun 2008, was backed by RockPort Capital, Lehman Brothers and Arcapita Ventures and 1 others.

What stage is Aspen Aerogels at?

Aspen Aerogels's latest named round is a Debt, in May 2013.

Where is Aspen Aerogels based?

Aspen Aerogels is based in the United States.

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