Who invested in Graviton

3 rounds we have observed, with the 11 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.

Biotech

Funding summaryUpdated 26 Oct 2026

$75Mraised across 3 rounds since 2000, from 3 sources

$35MSeries D$40MVenture

Latest round: Venture, $40MFeb 2024
Investors: 11

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.

2000200420082012201620202024

?Round$35MSeries D$40MVenture

First round: Round
Biggest round: $40M
Usual gap between rounds: 22.5 years

The rounds

Feb 2024
Venture$40M1 new
- Sanofi
Source recorded
Aug 2001
Series D$35M9 new
From a historical funding record
Mar 2000
RoundAmount undisclosed1 new
- Earlybird Venture Capital
From a historical funding record

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.

Round2000Series D2001Venture2024

Earlybird Venture CapitalSiemens

Sanofi

Motorola

Mitsui Global Investment

Merrill LynchQualcomm IncorporatedSun Microsystems

Omron VenturesRoyal Dutch Shell

Everyone who backed them

Earlybird Venture CapitalVC firm1round

SiemensCorporate VC1round

SanofiInvestment firm1round

MotorolaCorporate VC1round

Mitsui Global InvestmentCorporate VC1round

Merrill LynchInvestment firm1round

Qualcomm IncorporatedInvestment firm1round

Sun MicrosystemsGrowth equity1round

Omron VenturesCorporate VC1round

Royal Dutch ShellGrowth equity1round

Global CrossingVC firm1round

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

Also claim to have backed them

This firm lists Graviton as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.