Mario R. Porro signed The Winston School's 2025 Form 5500 as plan administrator.
Signer names are public record from the Form 5500 e-signature.
The Winston School's EIN is 75-1450819.
Download the official 2025 Form 5500 (PDF) for The Winston School from the U.S. Department of Labor's EFAST2 system.
Download the official 2025 Form 5500 (PDF)The Winston School's plan includes a 403(b) annuity, a self-directed brokerage window, a default investment (QDIA).
