Michael & Leah Weisberg Family
This organization is a private foundation dedicated to supporting various charitable causes, with a strong emphasis on arts and culture. Its mission is reflected in its funding of museums, historical preservation societies, and health charities, indicating a commitment to enriching community cultural resources and supporting health initiatives. The foundation primarily serves organizations in the arts sector, notably through significant grants to institutions such as the New York Historical Society and the Museum of Modern Art. Its activities are concentrated in New York, where it has established a pattern of funding local cultural and health-related organizations.
Source: Zeffy Agent · Mar 2026
Ideal Applicant
Established New York-based arts, culture, or museum institutions with existing institutional relationships or introductions to the foundation or its trustees.
Good Fit
- • Organization is a museum, historical society, or major cultural institution in New York.
- • Organization has an existing relationship with the foundation, its trustees, or current grantees.
- • Request aligns with general operating support or broad institutional priorities rather than small project grants.
- • Organizational scale and reputation match prior grantees (large institutional grants observed).
Geography
Observed giving is tightly concentrated in New York: the latest two years' grants were entirely to New York recipients and the foundation is recorded as New York‑based.
Recipient Variety
Across three years the foundation funded multiple independent nonprofits (7 in 2022, 5 in 2023, 4 in 2024) focused mainly on museums and cultural institutions, showing moderate variety even though a few large institutions receive the largest shares.
New Applicants
Filings state awards are limited to preselected recipients and the most recent year shows only returning grantees, so unsolicited new applicants appear unlikely to gain entry absent introductions.
Source: Zeffy Agent · Mar 2026
