| 1964 | Florida State University, BS – Business Administration, Major – Finance |
| 1977 | Woodrow Wilson College of Law, JD Degree |
| 1964–1966 | Salesman, Best Foods Division, CPC International |
| 1966–1969 | Captain, U. S. Marine Corps |
| 1969–2002 | First Vice President, Real Estate Finance – SunTrust Bank, Atlanta, GA |
| 2002 | Retired, SunTrust Bank and U. S. Marine Corps Reserve |
| 1980 | Married Nancy ("Nan") Casper Hillis, FSU Class of 1976 |
| 1988 | Established Nancy Casper Hillis & Mark Hillis Endowed Fund for Finance in the FSU College of Business |
| 1989–Present | FSU College of Business Board of Governors Member, Chairman 1996 – 1998 |
| 1992–1997 | Chairman, Georgia FSU Capital Campaign Committee |
| 1993–2002 | Treasurer and Member of FSU Alumni Association Board of Directors |
| 1995–2008 | Member of FSU Foundation Board of Trustees
Former Secretary, Chairman of the Real Estate, Finance, Development and Capital Campaign Executive Committees |
| 1996 | Recipient of the FSU Alumni Association Circle of Gold Award |
| 2003–Present | Member, FSU College of Business Real Estate Executive Advisory Board |
| 2004–2006 | Treasurer and Member of The Council on Culture & Arts for Tallahassee/Leon County, and Chairman of the Ways and Means Committee |
| 2004 | Established Mark Hillis and Nancy Casper Hillis Endowed Fund for Real Estate in the FSU College of Business |
| 2004–2008 | Member FSU Alumni Association Development Committee |
| 2006–2009 | Southern Scholarship Foundation Board Member and Chairman of The Investment Committee and Member of the Executive Committee |
| 2007–Present | Member and Secretary, Community Action Board of The Hospice of the Comforter for Orange, Seminole and Osceola Counties |
| 2009 | Member of the FSU Alumni Association Centennial Steering Committee |
| Member, FSU Francis Eppes, James D. Westcott and Custodes Lampadis Societies |
| Lifetime Member – FSU Alumni Association |
| FSU Seminole Booster |
| Theta Chi Fraternity |
| Member of Orlando Seminole Club and Former Board Member of Atlanta Seminole Club |
| Leadership Georgia – Class of 2000 |
| Member – First United Methodist Church of Winter Park |
| Lifetime Member – Metropolitan Atlanta Chamber of Commerce |
| Lifetime Member – Marine Corps Reserve Officer's Association and the Military Officer's Association of America |
