OpenERISA

Onyx Corporation

Acton, MA, 01720

EIN 04-2699421
Plans
2
Total participants
1,012
Filing years
2024, 2023, 2022, 2021, 2020
NAICS
237990

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500001Onyx Corporation 401(K) Plan125
2024Form 5500501Onyx Corporation Wrap Plan158
2023Form 5500001Onyx Corporation 401(K) Plan107
2023Form 5500501Onyx Corporation Wrap Plan148
2022Form 5500-SF001Onyx Corporation 401(K) Plan89
2022Form 5500501Onyx Corporation Wrap Plan119
2021Form 5500-SF001Onyx Corporation 401(K) Plan82
2021Form 5500501Onyx Corporation Wrap Plan102
2020Form 5500-SF001Onyx Corporation 401(K) Plan82

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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