Marathon Fusion

Advances fusion plant technology.

Energy & ClimateSeed

San Francisco, CA

Founded

2023

Employees

1-20

Total Raised

$11.9M

Last Round

Seed

Last Round Date

Jul 2024

Marathon Fusion is a energy & climate company based in San Francisco, CA, founded 2023. The company is at the Seed stage, having raised $11.9M, with 1-20 employees.

Updated Mar 2026

Founders

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Adam Rutkowski

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Marathon Fusion

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