United States · Venture startup
Funding summaryUpdated 26 Oct 2026
$135Mraised across 5 rounds since 2007, from 5 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
No investor was named in the report.
Reported by sec.govSEC filing: $3.0M sold, first sale Jul 2011
New Enterprise Associates
Foundation Capital
Rustic Canyon Partners
EnerTech Capital
Mesirow Financial
Navitas CapitalReported by greentechmedia.com
From a historical funding record
Reported by seriousmaterials.com
From the SEC filings it signed: 2 on the team.
On the board, as filediAlan H ThielemannForest BaskettJohn BabcockMarc E PoratPaul E HollandReed H HundtThomas E GaluhnWilliam E McDonough
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
New Enterprise AssociatesFoundation CapitalRustic Canyon PartnersEnerTech CapitalMesirow FinancialNavitas Capital
VantagePoint Capital Partners
Saints Capital
Staenberg VenturesCheyenne CapitalMissing a round, or an investor who was in one? Tell us.
Serious Energy's investors include New Enterprise Associates, Foundation Capital, Rustic Canyon Partners, EnerTech Capital and Mesirow Financial, and 5 more on record.
Serious Energy has raised $135M across 5 rounds since 2007.
Serious Energy's most recent round was a Venture of $3.0M in Nov 2011.
Serious Energy's largest round on record is $60M (Series C), in Sept 2009.
Serious Energy's first round on record, in Nov 2007, was backed by New Enterprise Associates, Foundation Capital and Rustic Canyon Partners.
Serious Energy's latest named round is a Venture, in Nov 2011.
Serious Energy is based in the United States.
In the same sector, and raised in the last eighteen months.
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