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Commonwealth Fusion Systems
Commonwealth Fusion Systems LLC is developing a process that fuses hydrogen nuclei using powerful, high-temperature superconducting magnets.
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Commonwealth Fusion Systems at a glance
Commonwealth Fusion Systems is an energy company headquartered in United States. Its most recent funding round, Series B2, raised $1B in July 2026. Xcout tracks 3 named people at Commonwealth Fusion Systems, including Bob Mumgaard (CEO). Xcout recorded 142 job postings from Commonwealth Fusion Systems in the last 90 days, naming tools such as Jira, Confluence, SAP.
Commonwealth Fusion Systems leadership
- Bob MumgaardCEO
- Brandon SorbomChief Science Officer
- Bob MumgaardCEO and Co-founder
Commonwealth Fusion Systems funding rounds
The 5 most recent:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series B2 | $1B | 14 named | |
| Series B2 | $863M | 13 named | |
| SEC Form D filing | $1.8B | — | |
| Series B | $1.8B | — | |
| SEC Form D filing | $80.6M | — |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Hiring at Commonwealth Fusion Systems
Xcout recorded 142 job postings from Commonwealth Fusion Systems in the last 90 days, from a hiring record Xcout has kept since June 2026.
Tools named in Commonwealth Fusion Systems's job postings
The weekly hiring trend, the roles and locations behind it — see Commonwealth Fusion Systems's hiring signals →
Recent Commonwealth Fusion Systems news
Hiring vs the trend
Based on 53 job postings in the last 8 weeks (10 Aug – 4 Oct 2026), compared with 21 energy companies.
This describes a hiring pattern — how often Commonwealth Fusion Systems’s job postings ask for AI skills, and how that changed against the previous 8 weeks, ranked among its peers. It says nothing about the company’s products or performance.
Signed-in members see the AI-skill share and its change with peer percentiles, role mix, posting momentum and advertised US pay against the market.
Investors
Tech stack
Commonwealth Fusion Systems competitors
A few of Commonwealth Fusion Systems's closest competitors — see the full list of competitors and alternatives →
Tokamak Energy is a UK-based fusion-energy company developing spherical tokamak devices and high-temperature superconducting magnet technology to enable commercially viable fusion power. It serves the energy and fusion-technology sectors, including potential power-generation and industrial partners.
Acceleron Fusion, Inc. is a clean energy company founded in 2023 and based in Cambridge, Massachusetts, focused on developing commercially viable energy solutions.
ITER is an international nuclear fusion research and engineering megaproject aimed at building the world's largest tokamak to prove the feasibility of fusion energy.
Helion Energy, Inc. is an American fusion research company located in Everett, Washington. It is developing a magneto-inertial fusion technology to produce fusion power by combining deuterium with helium-3 via aneutronic fusion.
Kyoto Fusioneering Ltd. is a fusion technology company headquartered in Kyoto, Japan, that develops advanced technologies and infrastructure to de-risk fusion energy.
Deuterium Energetics develops and licenses nano confinement fusion technology to provide a renewable and sustainable power source. The company designs and scales customized energy production systems to serve various use cases, including electric vehicle charging stations, neighborhoods, factories, cities, and spacecraft.
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More on Commonwealth Fusion Systems in Xcout Intel
- 3 named people with titles, LinkedIn and board committees
- 8 funding rounds with the investors in each, and who they co-invest with
- Weekly hiring history and the mix of roles behind it
- 2 corporate events with sources — deals, leadership changes, layoffs
- The full competitor set, tracking, exports and API access