With a B.A. from Emory University, Mark became a producer for Carruthers Insurance in 1977. After earning his J.D. from Memphis State University School of Law and admitted to law practice, he became a principal and 50% owner of Carruthers-Harris Agency. In 1992, he purchased Carruthers-Harris Agency. In 2001, he merged Carruthers-Harris Agency with Madden and Powell, Inc. to create Harris Madden & Powell, Inc. He has a particular expertise in heavy casualty risk, construction risk, and manufacturing risk.