Stellaria key facts
as of Oct 2026- Operator of a reinventing sustainable neutron nuclear energy company intended for the design, construction, and commercialization molten salt reactor.
- Stellaria is valued at approximately $65.5M as of Oct 2026 (last reported valuation).
- It has raised $28.5M; the latest was Early Stage VC ($26.8M) in Aug 2025.
- Notable investors include At One Ventures, Supernova Invest, France 2030, CEA Investissement, Audacia — 9 tracked in total.
- Status: Privately Held (backing).
Stellaria's last reported valuation, Aug 2025. Nothing priced has surfaced since.
- ·Watch Stellaria: the Monday email on marks, rounds and moves
Stellaria funding rounds
No funding rounds for Stellaria are on record yet — either the company hasn't raised institutional capital, or the raise hasn't surfaced in our sources.
Stellaria valuation
Stellaria's last reported valuation was $65.5 million in Aug 2025. No priced round, secondary trade or fund mark has surfaced since.
Stellaria investors
9 investors are on record for Stellaria, including At One Ventures, Supernova Invest, France 2030 and CEA Investissement.
About Stellaria
Operator of a reinventing sustainable neutron nuclear energy company intended for the design, construction, and commercialization molten salt reactor. The company focuses on carbon dioxide-free electrification, making neutron technology affordable, enabling industries to access abundant heat and power that is essential for social peace, sovereignty, and prosperity.
- Sector
- Business Products and Services (B2B)
- HQ
- Grenoble, France
- Founded
- 2023
- Employees
- 20
- Website
- stellaria.fr/
- Ownership
- Privately Held (backing)
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