Mark is an Associate Attorney at Liston & Tsantilis, P.C., concentrating on Property Tax Appeals. He is admitted to practice law in the State of Illinois and is a member of the American Bar Association, Illinois State Bar Association, and the Chicago Bar Association.

Mark received his J.D. from Chicago-Kent College of Law in 2017. While attending law school, Mark clerked for a law firm, primarily focusing on trial preparation. During law school, Mark was also a part of the Phi Alpha Delta legal fraternity and the Justinian Society. Prior to attending law school, Mark graduated with honors from the University of Missouri double majoring in History and Political Science.