Dennis H. Reilley of Oklahoma City graduated from Oklahoma State University in 1975 with a bachelor’s degree in finance. He currently serves as the chairman of the board of directors at Marathon Oil Company. Reilley was inducted into the OSU Hall of Fame on February 14, 2014. While at OSU, Reilley was a member of Sigma Chi fraternity and met his wife, Cindy. He went on to graduate from Harvard Business School’s Program for Management Development. From 1975 to 1989, Reilley held several positions with Conoco including being named vice president in 1984. After several years of service, he moved to DuPont, he served in numerous roles including executive vice president and chief operating officer. Reilley concluded his career at Praxair, Inc. where he served as chairman, president and chief executive officer for almost eight years. Reilley is a member of the boards of the Marathon Oil Company, the Dow Chemical Company and Covidien Ltd. He was named best CEO in America in Basic Materials and Specialty Chemical Sector of the Fortune 500 companies from 2003-2007 by Institutional Investor Magazine. Forbes Magazine named Praxair one of the best managed companies in America and named Reilley one of the best performing bosses and one of the best CEO’s of the decade. In 2008, the Society of Chemical Industry awarded him the Chemical Industry Medal for lifelong distinguished service. He was also awarded Significant Sig by his fraternity, Sigma Chi. Reilley is a life member of the OSU Alumni Association.