The Phelan-McDermid Syndrome Foundation (PMSF) is committed to transparency and responsible stewardship. Our 2025 IRS Form 990 provides a comprehensive overview of the Foundation’s financial activities, governance, and program impact.

The filing highlights how resources are allocated to advance research, improve care, support families, and strengthen our organization in service of the PMS community.

We invite you to review this document to learn more about our work and impact in 2025.