Key facts
- It has raised $5.0M across 1 recorded rounds; the latest was Early Stage VC ($5.0M) in Dec 2022.
- Notable investors include Impact Assets, Climate Capital, U.S. Department of Energy, Arpa-E, 1517 Fund — 17 tracked in total.
- Marathon Fusion has filed 1 Form D with the SEC, most recently Feb 2024 ($5.0M sold to 25 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 1 rounds
- ·The complete investor list — 17 names
- ·Watchlist + deal alerts for Marathon Fusion
Funding rounds
1 roundsAbout Marathon Fusion
Developer of renewable energy technology designed for the deployment of fusion power plants. The company's technology supports the evaluation of metal foil pumps in nuclear fusion systems that propel the novel technology into pilot plants, enabling businesses to generate energy that is both clean and abundant.
- Sector
- Energy
- HQ
- San Francisco, CA, United States
- Founded
- 2023
- Employees
- 34
- Website
- marathonfusion.com/
- Ownership
- Privately Held (backing)
Marathon Fusion doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Marathon Fusion shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Marathon Fusion in its N-PORT filings yet. We sweep new filings monthly.