Germany · Series B startup
3 rounds we have observed, with the 22 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.
Raised 4 months ago
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Funding summaryUpdated 5 Nov 2026
$636Mraised across 3 rounds since 2025, from 8 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
XTX VenturesLead
East X VenturesLead
Lightspeed Venture Partners
Balderton Capital
CDP Venture Capital
Cherry Ventures
Google
UVC Partners
Plural
Burda Principal Investments
KfW Capital
SPRINDReported by TechStartups and 1 other
Source recorded
From Proxima Fusion's own website: 5 founders, 4 on the team.
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Cherry VenturesLLightspeed Venture PartnersBalderton CapitalLCDP Venture CapitalUVC PartnersPluralXTX VenturesLEast X VenturesL
Bayern Kapital
ElaiaMissing a round, or an investor who was in one? Tell us.
These 5 firms list Proxima Fusion as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Proxima Fusion's investors include Cherry Ventures, Lightspeed Venture Partners, Balderton Capital, CDP Venture Capital and UVC Partners, and 17 more on record. XTX Ventures led its latest round.
Proxima Fusion has raised $636M across 3 rounds since 2025.
Proxima Fusion's most recent round was a Series B of $468M in Jul 2026, led by XTX Ventures.
Its most recent round, $468M in Jul 2026, is also its largest on record.
Proxima Fusion's first round on record, in Jun 2025, was backed by Balderton Capital, Cherry Ventures and Lightspeed Venture Partners and 10 others.
Proxima Fusion's latest named round is a Series B, in Jul 2026.
Proxima Fusion is based in Germany.
Balderton Capital led the Series A in 2025; XTX Ventures led the Series B in 2026.
In the same sector, and raised in the last eighteen months.
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Germany · 
