Proxima Fusion
PrivateLast Round
Early Funding
Jul 7, 2026
Est. Valuation
$2.7B
Total Funding Raised
$355.44M
Momentum
Top 1%
of companies Caplight tracks
Company Overview
Proxima Fusion is a clean energy company that develops fusion power plants utilizing quasi-isodynamic (QI) stellarators to generate emissions-free electricity.
Sector
Energy & Sustainability
Verticals
Renewable Energy, Advanced Materials, Smart Grid, ML Platforms
Business Model
B2B
Customer Profile
Government Contracts
AI Layer
Infrastructure
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Proxima Fusion Comparables
Compare Proxima Fusion with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Gauss Fusion | 88% | |
| Type One Energy Group | 83% | |
| Renaissance Fusion | 82% |
Proxima Fusion Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Early Funding | Jul 7, 2026 | ||||
| Series A Extension | Sep 9, 2025 | ||||
| Series A | Jun 11, 2025 | ||||
| Series A | Jun 11, 2025 | ||||
| Grant | Jul 15, 2024 | ||||
Seed | Apr 10, 2024 |
Key People
Founding team and executive leadership
Proxima Fusion Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| SKion GmbH | Early Funding |
| East X Ventures | Early Funding |
| Positron Ventures | Seed |
| European Innovation Council Fund | Grant, Early Funding, Series A Extension |
| DST Global | Early Funding |
| Elaia Partners | Early Funding, Series A |
| DeepTech & Climate Fonds | Seed, Early Funding, Series A |
Market signals
Structured signals derived from secondary market and firmographic data.
- Sep 22, 2026
Grew 17% QoQ, from 163 to 191 employees.
- Sep 13, 2026
Monthly visitors grew 31% MoM, reaching 63K.
Recent news
Latest coverage and updates
- expands_offices_inOct 9, 2026
Proxima Fusion GmbH expands its base in Culham, potentially quadrupling its workforce by 2028
- invests_into_assetsSep 12, 2026
Proxima Fusion GmbH invested into assets: plant in the amount of $162M in Munich, Germany, Western Europe, Europe on Sep 12th '26.
- expands_facilitiesSep 10, 2026
Proxima Fusion GmbH expanded facilities to Germany, Western Europe, Europe on Sep 11th '26.
- invests_into_assetsSep 10, 2026
Proxima Fusion GmbH invested into assets: factory in the amount of $163M in Germany, Western Europe, Europe on Sep 9th '26.
- is_developingSep 10, 2026
Proxima Fusion GmbH is developing fusion-grade high-temperature superconducting tape on Sep 10th '26.
Proxima Fusion Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
Filing documents are not displayed on this public page. Request access to learn about available coverage.
Request accessFrequently Asked Questions
Common questions about Proxima Fusion's valuation, stock price, and market status.
Is Proxima Fusion a public or private company?
Proxima Fusion is a private company.
What is the current stock price of Proxima Fusion?
Proxima Fusion is a private company, so its shares have no public market price. Caplight tracks Proxima Fusion's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is Proxima Fusion worth (valuation)?
Proxima Fusion's valuation is estimated at $2.7B based on funding round data.
Can I buy Proxima Fusion stock?
Proxima Fusion shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was Proxima Fusion's last funding round?
Proxima Fusion's most recent funding round was Early Funding on July 7, 2026.
Who are the main investors in Proxima Fusion?
Key investors in Proxima Fusion include East X Ventures, State of Bavaria, Robert Bosch Venture Capital, Plural, UVC Partners.
Will Proxima Fusion IPO soon?
No public IPO plans have been announced for Proxima Fusion.
How can I track Proxima Fusion secondary market activity?
Caplight tracks bids, offers, and trades in Proxima Fusion's shares on secondary markets.