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Proxima Fusion

PF
Nuclear & FusionUSFounded 2023Website
#310 by valuation

Proxima Fusion is a fusion energy company focused on stellarator reactors. It designs quasi-isodynamic magnetic confinement systems and high-temperature superconducting magnet technology. The company uses modeling and engineering to develop components and prototypes intended for continuous operation and grid-connected power plants.

Founded by Francesco Sciortino (Co-founder, CEO), Lucio Milanese (Co-founder, COO / Chief External Affairs Officer), Jorrit Lion (Co-founder, Chief Scientist), Jonathan Schilling (Co-founder, Head of Labs), Martin Kubie (Co-founder, Chief Engineer)

Blended valuation$2.7B
Valuation history
Weekly blended valuation with priced funding rounds marked on the timeline.
$2.8B
blended valuationfunding round
Jul 6, 2026$2.7BOct 5, 2026
All rounds
2 funding rounds, newest first.
RoundAnnouncedRaisedPost-money
Series AJul 7, 2026$469.8M$2.7B
Series ASep 9, 2025$17.6M—
Investors
21 investors across all rounds.
  • BC
    Balderton Capital
  • BK
    Bayern Kapital
  • CV
    Cherry Ventures
  • DG
    DST Global
  • GO
    Google
  • LV
    Lightspeed Venture Partners
  • BH
    Brevan Howard
  • BP
    Burda Principal Investments
  • CV
    CDP Venture Capital
  • D&
    DeepTech & Climate Fonds
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Data as of Oct 14, 2026. Valuations are estimates blended from primary and secondary-market signals — not investment advice.