Will is a director of Brown Advisory Incorporated and Brown Investment Advisory & Trust Company. He is president and CEO of the Chesapeake Bay Foundation. He is a trustee of Johns Hopkins Medicine, the Open Society Institute – Baltimore and the Clayton Baker Trust. He also serves as an emeritus board member of the Baltimore Community Foundation, a director of the Central Maryland Transportation Alliance, a member of the UMBC Board of Visitors and an honorary board member of the Garden Club of America. He is a founding director of the Greater Washington Board of Trade’s Green Committee and the Living Classrooms Foundation.