Stewart and his wife, Donna, enjoy spending time with their daughter and three grandchildren. They are active supporters of various community organizations, including Oberlin College, where Stewart is a trustee. He was inducted into the Ohio Foundation of Independent Colleges Hall of Excellence in 2009. He is also a participant on Cleveland Clinic’s Wellness Institute Leadership Board. Stewart is an avid recreational cyclist and can be found pedaling his bike when he isn’t peddling Riverside.