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Commonwealth Fusion Systems
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
Current Number of Employees1,074
Current LinkedIn Followers63,225
Latest Estimated Valuation
Estimated Valuation―
Estimated Valuation―
Total Amount Raised$2B
Total Amount Raised$2B
Total Funding Rounds2
Total Funding Rounds2
Latest Funding Amount$863M
Latest Funding Amount$863M
Latest Funding RoundInvestment
Latest Funding RoundInvestment
Post-Money Valuation―
Post-Money Valuation―
Employee Trend
Commonwealth Fusion Systems had 1,074 employees as of March 23, 2026. The number of employees decreased by 1 (0.09%) week-over-week.
1,074Latest Employee Count
1(-0.09%)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 63,225 followers as of March 23, 2026. The number of followers increased by 221 (0.35%) week-over-week.
63,225Latest Followers Count
221(0.35%)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
Sep 24, 2025
Investment
$863.00M
―
Sep 22, 2025
Series B
$863.00M
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