OpenERISA

Commonwealth Fusion Systems LLC

Devens, MA, 01434

EIN 82-3262257
Plans
1
Total participants
2,155
Filing years
2024, 2023, 2022, 2021
NAICS
541700
Plan sponsors in MassachusettsProfessional, Scientific & Technical Services

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001Cfs 401(K) Plan1,067
2023Form 5500001Cfs 401(K) Plan589
2022Form 5500001Cfs 401(K) Plan348
2021Form 5500001Cfs 401(K) Plan151

Data shown as filed with the U.S. Department of Labor (EBSA), filing years 2020–2025; not validated by OpenERISA. View official filings for this EIN on the DOL EFAST2 search.

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