Jack & Marci Williams Endowment For

Restricted Access
Private Foundation
WESTON, MassachusettsSmallEIN: 043500449
Foster Care and Child Welfare AgenciesDisability Support ServicesHuman Services

This organization is a private foundation dedicated to supporting special needs children and their families. Its mission focuses on providing assistance to residential homes and related services, as well as facilitating the adoption of special needs and other children into permanent homes. The foundation primarily funds nonprofit organizations that offer these services, reflecting a strong commitment to child welfare and disability support. It serves a variety of organizations, particularly those involved in foster care and child welfare, primarily in the New England region.

Source: Zeffy Agent · Mar 2026

Ideal Applicant

A Massachusetts-based nonprofit working in child welfare or residential services for special-needs children, with an established track record and local relationships to current grantees or board members.

Good Fit

  • Provides residential or related services for special-needs children and families.
  • Based in Massachusetts or serves communities in the same state.
  • Has an existing relationship, referral, or partnership with a current grantee or foundation contact.
  • Experience managing grants in the roughly $8,000–$60,000 range.
  • Demonstrable local impact and steady operating history.

Geography

Moderate

Giving is heavily concentrated in Massachusetts—about 84% of dollars—while small out-of-state gifts appear occasionally across three states, indicating a primarily state-level footprint with limited regional exceptions.

Recipient Variety

Moderate

The latest year shows 10 distinct independent recipients and a consistent cohort across three years (nine recurring grantees), which points to a moderate spread of independent nonprofits focused on a narrow mission area rather than an extremely small or highly affiliated recipient circle.

New Applicants

Restrictive

The foundation declares it funds only preselected organizations and observed history shows only one new grantee per year across multiple years, so unfamiliar applicants appear unlikely to enter the portfolio without referral or invitation.

Source: Zeffy Agent · Mar 2026