OpenERISA

Day One Biopharmaceuticals, INC.

Brisbane, CA, 94005

EIN 83-2415215
Plans
2
Total participants
891
Filing years
2024, 2023, 2022
NAICS
541700
Plan sponsors in CaliforniaProfessional, Scientific & Technical Services

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001Day One Biopharmaceuticals 401(K) Plan181
2024Form 5500501Day One Biopharmaceuticals Employee Health And Welfare Benefits Plan171
2023Form 5500001Day One Biopharmaceuticals 401(K) Plan153
2023Form 5500501Day One Biopharmaceuticals Employee Health And Welfare Benefits Plan132
2022Form 5500001Day One Biopharmaceuticals 401(K) Plan122
2022Form 5500501Day One Biopharmaceuticals Employee Health And Welfare Benefits Plan132

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.

Other plan sponsors in California

All California plan sponsors →