Justin Cohen Net Worth (Estimated)

Who is Justin Cohen?

Justin Cohen is a founder of Maritime Fusion, a startup showcased in Y Combinator's Winter 2025 batch.

Highlights:

• University of Pennsylvania
• Y Combinator

About Maritime Fusion

Maritime Fusion is building fusion reactors for ships and off grid energy markets. En route on this endeavor we’re commercializing High Temperature Superconducting (HTS) cable technology for power distribution while advancing the physics basis of our HTS tokamak to decarbonize global shipping.

Breakeven fusion is coming soon, but the first-of-a-kind (FOAK) reactors will be costly, high maintenance, and have low...

Model inputs

• Stage: seed
• Valuation tier: raise-10x
• Funding input: reported raise $4.5M
• Valuation note: Leftover $4.5M matches the Trucks seed. Do not invent a later A or a valuation.
• Research as-of: 2026-09-14
• Funding source: https://techcrunch.com/2025/11/24/this-startup-wants-to-build-a-fusion-reactor-on-a-boat/

FAQ: Justin Cohen net worth and Maritime Fusion valuation

What is Justin Cohen's net worth?

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. Entrepreneurial Check publishes an independent model-based estimate from public company and role data.

Justin Cohen net worth

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. This Justin Cohen net worth figure is estimated paper wealth, not a verified statement of assets.

How much is Justin Cohen worth?

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. How much Justin Cohen is worth here means estimated paper wealth from public company and role data — not financial advice.

How rich is Justin Cohen?

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. “How rich is Justin Cohen” here means estimated paper wealth from public company and role data — not verified net worth or financial advice.

Justin Cohen fortune

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. This Justin Cohen fortune figure is estimated paper wealth only, not a verified statement of assets.

Justin Cohen equity value

Justin Cohen's estimated net worth / paper wealth is $22.5M (range $15.7M–$33.8M) as of 2026. Justin Cohen equity value on this page is modeled paper wealth from estimated ownership — not a disclosed cap table or verified net worth.

What is Maritime Fusion valuation?

Maritime Fusion's estimated valuation on Entrepreneurial Check is $45.0M. Independent model output, not a verified appraisal or official mark.

What is Maritime Fusion post-money valuation?

Maritime Fusion's estimated valuation on Entrepreneurial Check is $45.0M. That figure is a modeled post-money mark when a public raise is available — not a verified appraisal or official mark.

What is Maritime Fusion funding?

Maritime Fusion funding, when a public raise is available, is a model input on this Entrepreneurial Check profile. How much Maritime Fusion raised is not a complete cap table — figures are estimates only.

How much did Maritime Fusion raise?

How much Maritime Fusion raised, when disclosed, informs the estimated Maritime Fusion valuation and founder paper-wealth figures on this page. Independent estimate only — not a complete cap table or financial advice.

How much money did Maritime Fusion raise?

How much money Maritime Fusion raised, when a public figure is available, is a model input for the estimated Maritime Fusion valuation on this profile. Estimates only — not a complete cap table.

What is Maritime Fusion series funding?

Maritime Fusion series funding, when a public raise is disclosed, informs the estimated Maritime Fusion valuation here. Not a complete financing history.

What company is Justin Cohen building?

Justin Cohen is Founder at Maritime Fusion, a Y Combinator-backed startup (batch W25).

What does Maritime Fusion do?

Maritime Fusion — Fusion reactors for ships

What YC batch is Justin Cohen from?

Justin Cohen is associated with Y Combinator batch W25.

Where did Justin Cohen go to school?

Public profiles associate Justin Cohen with Bachelor's degree from University of Pennsylvania.

Where is Justin Cohen based?

Public directory data lists Justin Cohen's region as United States of America.

What industry is Justin Cohen in?

Justin Cohen is listed under Industrials, Energy.

How big is Maritime Fusion?

Public data lists Maritime Fusion's team size as 6.

What else is notable about Justin Cohen?

University of Pennsylvania.

Is Entrepreneurial Check affiliated with Y Combinator?

No. Entrepreneurial Check is an independent informational site and is not affiliated with, endorsed by, or sponsored by Y Combinator or the profiled companies.