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Private

Commonwealth Fusion Systems

Devens, MA Founded 2018

Company website Company source

Develops high-field superconducting magnets and compact fusion power systems.

fusion energyadvanced manufacturing and energyClimate & Energy
Domaincfs.energy
Indexed investors5
Named founders2
Evidence policySource-linked
Official channels Website LinkedIn X YouTube Company source
Products

What Commonwealth Fusion Systems builds

A concise product map for orientation. Product availability, names, and positioning can change; use the company website for current specifications.

01

SPARC

Compact high-field tokamak demonstration machine.

02

ARC

Planned commercial fusion power plant platform.

03

HTS magnets

High-temperature superconducting magnet technology.

Company intelligence

Principal founders & key executives

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Branded placeholder portrait for Bob Mumgaard; identity image not yet verifiedFounder & executive

Bob Mumgaard

Co-founder & CEO

Leads the company’s high-field magnet, SPARC and commercial fusion roadmap.

Branded placeholder portrait for Dennis Whyte; identity image not yet verifiedFounder

Dennis Whyte

Co-founder

Contributes foundational fusion-science and high-field tokamak expertise.

Branded placeholder portrait for Brandon Sorbom; identity image not yet verifiedFounder & executive

Brandon Sorbom

Co-founder & Chief Science Officer

Guides scientific execution across magnets, plasma systems and reactor development.

Public-source directory. This view prioritizes principal founders and decision-making executives; use the linked leadership source for the full current roster. Roles, affiliations, and social accounts can change. SMYC lists official company routes and publicly shared professional profiles—not private personal contact details. The branded silhouette marks an unavailable or ambiguous portrait; it is not an image of the person. Some public-profile portraits are resolved by Unavatar.

Founding team

The people who started it

Founder identities come from company-controlled or other cited primary pages. Current operating roles may differ from founding roles.

Capital relationships

Investors listing this company

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Commonwealth Fusion Systems.

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Relationship, not cap table

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