Richard King Mellon Foundation

Richard King Mellon Foundation

The Richard King Mellon Foundation was established in 1947 by Richard King Mellon. His grandson Richard A. Mellon now serves as chairman and chief executive. The foundation maintains a related vehicle, the R.K. Mellon Family Foundation, formed in 1979 for additional family grantmaking. Capital deployment spans public equities, private equity, venture capital, and real estate. The foundation reports a 27 percent allocation to private equity. Confirmed holdings include positions in Untapped Solutions, Earflo, Rasa Legal, Sixup, and Wisdom.io through its social-impact program. It also holds limited-partner interests in Hyde Park Venture Partners and High Alpha. Geographic reach centers on Pennsylvania and extends to other U.S. states through conservation and early-stage investments. The foundation employs 16 professionals and maintains its headquarters in Pittsburgh. It owns the LEED-certified Auction House building and participates in the Hazelwood Green redevelopment through Almono LP, a joint venture with the Heinz Endowments and the Claude Worthington Benedum Foundation. October 2025 marked its sponsorship of a social-impact investment pitch competition in Pittsburgh. Adjacent structures include membership in the Council on Foundations and board service by Sam Reiman at the Allegheny Conference on Community Development. The foundation combines grantmaking authority with direct investment capacity through its program-related investments portfolio valued at $54 million. This hybrid mandate allows it to take limited-partner roles in venture funds and to co-invest alongside external managers in real-asset projects without creating a separate family office entity.