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Weill Family Foundation
Sanford I. Weill and Joan Weill created the foundation in 1967. Its giving has exceeded $1 billion across global nonprofits. Focus areas remain health,...
Weill Family Foundation
Sanford I. Weill and Joan Weill created the foundation in 1967. Its giving has exceeded $1 billion across global nonprofits. Focus areas remain health, education, and the arts. The foundation holds limited partner positions in Dragoneer Opportunities Fund IV, Canyon Laurel Investment Fund, and SCP Private Equity Fund I. It also maintains a board seat at Koç Holding. Geographic reach covers the United States and Turkey. Asset records list direct ownership of Shanel Estate in Sonoma County and prior holdings such as the 15 Central Park West penthouse. Michael Freedman serves as Chief Investment Officer. Arthur Mahon acts as Assistant Secretary and Director. January 2026 marked sponsorship of the UCSF-Stanford Summit on cancer research and AI in medicine. The foundation lists no additional offices. Governance stays within the Weill family. Marc Weill and Jessica Bibliowicz hold director and board roles. This structure separates philanthropic distributions from any operating-company or investment activities tied to the original Citigroup wealth.
General information
Firm type
Family Foundation
Year founded
1967
Location
Region
North America
Country
United States
City
Albany
Corporate office
PO Box 10879, Albany, NY, United States
Principals
Sanford I. Weill
Founder
Joan Weill
Co-founder
Marc Weill
Director
Jessica Bibliowicz
Family Member
Sector focus
Frequently asked questions
Who runs investment decisions at Weill Family Foundation?
Michael Freedman serves as Chief Investment Officer. Arthur Mahon holds the role of Assistant Secretary and Director. Decisions flow through the family board that includes Marc Weill.
Does Weill Family Foundation participate in fund commitments or only direct deals?
The foundation acts as limited partner in Dragoneer Opportunities Fund IV, Canyon Laurel Investment Fund, and SCP Private Equity Fund I. Records show no direct operating-company equity outside these vehicles.
Where does the underlying wealth come from?
Wealth traces to Sanford I. Weill's career as CEO and Chairman of Citigroup and prior roles at American Express and Travelers. Joan Weill is listed as co-founder of the foundation.
What investment stages does Weill Family Foundation typically target?
Strategy tags list venture capital, buyout, early stage, growth, and expansion. Holdings include both early-stage and later private equity funds.
How is Weill Family Foundation related to its family principals?
Sanford I. Weill and Joan Weill founded the entity. Marc Weill serves as director. Jessica Bibliowicz, their daughter, chairs the Board of Fellows at Weill Cornell Medicine.
Does Weill Family Foundation maintain philanthropic structures, and how are they separated?
The foundation itself functions as the primary giving vehicle. Notable donations include more than $650 million to Weill Cornell Medicine and $100 million to Carnegie Hall. No separate operating businesses are disclosed.
What is Weill Family Foundation's known posture on co-investments alongside external GPs?
Public records show only limited partner commitments to named funds. No co-investment mandates or direct GP partnerships appear in the data.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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