OpenERISA

Mattson/Witt Corp.

Lake Barrington, IL, 60010

EIN 83-3996863
Plans
1
Total participants
101
Filing years
2024, 2023, 2022, 2021, 2020
NAICS
332700

Benefit plans on file

YearFormPlan #Plan nameParticipants
2024Form 5500-SF002Mattson Witt Precision Product 401(K) PS Plan21
2023Form 5500-SF002Mattson Witt Precision Product 401(K) PS Plan20
2022Form 5500-SF002Mattson Witt Precision Product 401(K) PS Plan22
2021Form 5500-SF002Mattson Witt Precision Product 401(K) PS Plan19
2020Form 5500-SF002Mattson Witt Precision Product 401(K) PS Plan19

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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