Stellaria

Grenoble, France · Founded 2023 · Privately Held (backing)

Operator of a reinventing sustainable neutron nuclear energy company intended for the design, construction, and commercialization molten salt reactor. Stellaria is based in Grenoble, France and was founded in 2023. Its last reported valuation was $65.5 million in Aug 2025. It has raised $28.5 million.

Last reported valuation
$65.5M
Oct 2026
Priced at
—
Total raised
$28.5M
Last round
—

Who backs Stellaria?

9 investors
InvestorType
At One VenturesVenture capital
Supernova InvestVenture capital
France 2030Other
CEA InvestissementOther
Audacia—
Exergon—
Iventure (Grenoble)—
Schneider Electric (Electrical Equipment)—
Technip Energies—
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Stellaria investors

9 investors are on record for Stellaria, including At One Ventures, Supernova Invest, France 2030 and CEA Investissement.

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