Mason Structure, Inc.'s EIN is 61-1109848.
Download the official 2024 Form 5500 (PDF) for Mason Structure, Inc. from the U.S. Department of Labor's EFAST2 system.
Download the official 2024 Form 5500 (PDF)Mason Structure, Inc.'s plan includes profit-sharing, ERISA 404(c) participant direction, a 401(k) feature, a default investment (QDIA).