OpenERISA

Biogen INC.

Cambridge, MA, 02142

EIN 33-0112644
Plans
3
Total participants
73,911
Filing years
2024, 2023, 2022, 2021, 2020
NAICS
325410
Plan sponsors in MassachusettsManufacturing

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001Biogen 401(K) Savings Plan4,289
2024Form 5500501Biogen Health And Welfare Benefit Plan4,266
2024Form 5500520U.S. Change In Control Severance Plan4,160
2023Form 5500001Biogen 401(K) Savings Plan4,292
2023Form 5500501Biogen Health And Welfare Benefit Plan4,161
2023Form 5500520U.S. Change In Control Severance Plan4,062
2022Form 5500001Biogen 401(K) Savings Plan5,003
2022Form 5500501Biogen Health And Welfare Benefit Plan5,011
2022Form 5500520U.S. Change In Control Severance Plan4,869
2021Form 5500001Biogen 401(K) Savings Plan5,611
2021Form 5500501Biogen Health And Welfare Benefit Plan5,655
2021Form 5500520U.S. Change In Control Severance Plan5,544
2020Form 5500001Biogen 401(K) Savings Plan5,702
2020Form 5500501Biogen Health And Welfare Benefit Plan5,698
2020Form 5500520U.S. Change In Control Severance Plan5,588

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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