Partners & Sponsors

Our program is profoundly grateful to our past and present supporters:

- The Barr Foundation

- The Herman and Frieda L. Miller Foundation

- Access Strategies Fund

- The Boston Foundation

- The Ansara Family Foundation

- The Cabot Charitable Trust, and

- The Foley Hoag Foundation

Partnership with Third Sector New England

The Seminar is proud of our partnership with Third Sector New England (TSNE), which serves as our fiscal sponsor, and provides both administrative services and strategic guidance to MassCS.


Third Sector New England is a nonprofit organization that provides management support and resources to strengthen individual organizations and build the nonprofit sector’s capacity to advance social justice.


Their programs and services include executive transition support, management consulting, and grantmaking to foster diversity and capacity building. They also provide fiscal sponsorship regionally, and have developed the multi-tenant NonProfit Center for Boston’s progressive social change organizations. TSNE shares the sector’s best practices, with an emphasis on helping to create supportive nonprofit networks.