Nancy Marks graduated from New York University with a BA degree and holds a master's degree from Columbia Graduate School. She is currently chairman of the fashion house, Sies Marjan, in New York City.
Nancy has had a life-long interest in preventative medicine, serves on the board of New York Presbyterian Hospital, and on the external advisory committee of its integrative health center. She is a trustee of the Lynne Cohen Foundation for ovarian cancer research, the Melanoma Research Alliance, the Foundation for Art Preservation in Embassies (FAPE), and is a founding board member of the Paul Newman Painted Turtle camp. In London, Nancy serves as a trustee of the Royal Drawing School and is a governor of the Royal Ballet School.
Nancy is the author of a children's book, "Just As You Are: The Story of Leon and Sam," which received the independent publishing prize for graphic design. Her hobby is portrait painting.