Companies / Marathon Fusion
Marathon Fusion
San Francisco, United States
Marathon Fusion develops tritium fuel systems and works on nuclear fusion technology
Marathon Fusion, based in San Francisco, United States, has 7 investors on file, among them Collaborative Fund, Divergent Capital and Earthrise Ventures. Its site was last checked 13 Nov 2026: site answers.
Investors
7 investors on file| Investor | Evidence | Type |
|---|---|---|
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Micro VC | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital |
A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data
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$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/companies/marathonfusion.com/investors
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GET /v1/companies/marathonfusion.com
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