Anna-Maria and Stephen Kellen Foundation

Anna-Maria and Stephen Kellen Foundation

The Anna-Maria and Stephen Kellen Foundation was established in 1984 by Stephen M. Kellen and Anna-Maria Kellen. Stephen Kellen previously led Arnhold and S. Bleichroeder, the investment bank whose successor entity is First Eagle Investment Management. The foundation functions as the central philanthropic entity for the Kellen family and maintains separate personal foundations run by children Michael M. Kellen and Marina Kellen French. Grant activity centers on arts, education, and healthcare. Confirmed distributions include $35 million to the Hospital for Special Surgery, $32 million to the Mayo Clinic, and $5 million to the Animal Medical Center. The foundation also funds free admission programs at MoMA PS1 and maintains a founding grant relationship with the American Academy in Berlin, which occupies the former Hans Arnhold Villa. Geographic reach covers the United States and Germany. Holdings reported in Form 990-PF filings include limited-partner interests in private equity and alternative vehicles, with named positions in Arsanis, Vir Biotechnology, and Inflection Point Acquisition Corp. The foundation lists no disclosed headcount or additional offices beyond its New York headquarters. Northern Right Capital Management, LP and First Eagle Investment Management serve as investment advisors. A 2023 sponsorship of the Quadrille Ball in New York supported German-American cultural exchange. Related family foundations and the Council on Foreign Relations membership of Stephen Kellen provide additional network nodes. The structure keeps investment and grant decisions within a single family-controlled board while routing legacy banking relationships through external advisors. This produces a hybrid posture that combines direct real-asset ownership, such as the Berlin villa, with outsourced management of the private-equity book.