Commonwealth Fusion Systems (CFS) is a leading private company in the fusion energy sector, dedicated to commercializing fusion power to revolutionize global energy generation. The company operates a critical magnet manufacturing facility and global headquarters in the Boston area, focusing on developing fusion energy technology to provide limitless carbon-free energy. Backed by prominent investors, CFS is at the forefront of advancing fusion technology to transform the energy landscape.
Estimated Valuation
Leadership & Board
Key Executives
Co-Founder and CEOBob Mumgaard
Co-Founder and Chief Science OfficerBrandon Sorbom
Chief Operating OfficerJoy Dunn
Chief Financial OfficerSteve Ghiselin
Vice President of Project ManagementKathy Ayers
FounderMartin Greenwald
Current Number of Employees1,117
Current LinkedIn Followers70,343
Latest Estimated Valuation
Estimated Valuation―
Estimated Valuation―
Total Amount Raised$3B
Total Amount Raised$3B
Total Funding Rounds3
Total Funding Rounds3
Latest Funding Amount$863M
Latest Funding Amount$863M
Latest Funding RoundInvestment
Latest Funding RoundInvestment
Post-Money Valuation―
Post-Money Valuation―
Company Momentum Positive
Articles Published on TipRanks4
Articles Published on TipRanks
4
LinkedIn Trend+0.49% followers
LinkedIn Trend
+0.49% followers
Workforce Trend0.5% employees
Workforce Trend
0.5% employees
Commonwealth Fusion Systems LinkedIn following is increasing, signaling rising market interest, while its workforce size remains relatively unchanged.
Company Momentum indicates whether the company is gaining or losing traction over time. This proprietary TipRanks metric analyzes changes in a company’s workforce and LinkedIn follower trends, balancing these signals together to generate an overall momentum sentiment.
Employee Trend
Commonwealth Fusion Systems had 1,117 employees as of September 28, 2026. The number of employees decreased by 5 (0.45%) week-over-week.
1,117Latest Employee Count
5(-0.45%)Week-Over-Week Change
Employee Trend serves as a data-driven indicator of company growth and expansion. The measurement reflects how a company’s workforce size changes over time.
Social Trend
Commonwealth Fusion Systems had 70,343 followers as of September 28, 2026. The number of followers increased by 346 (0.49%) week-over-week.
70,343Latest Followers Count
346(0.49%)Week-Over-Week Change
LinkedIn Follower Trend serves as a data-driven indicator of market interest and company visibility. The measurement reflects how a company’s LinkedIn follower count changes over time.
Funding Round
Jul 31, 2026
Investment
$863.00M
―
Jul 30, 2026
Investment
$1.00B
―
Sep 22, 2025
Series B
$863.00M
―
Investors
Series B
Investment
Investment
Investment
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