Mark Williams is currently a full time adjunct marketing professor at Trinity University. He retired from KCI as Vice President of Sales after serving in that capacity for almost five years. Prior to that, he was with Roche Diagnostics, Inc. for fifteen years in various senior management positions in marketing, sales and general management. Mark's final position with Roche was Vice President and General Manager of the Point of Care Division. Prior to Roche, he was with the diagnostics division of Johnson & Johnson for fifteen years in various management positions.

Mark currently serves on a number of San Antonio non-profit boards: he is the Board Secretary and a member of the Executive Committee at the San Antonio Chapter of the American Red Cross, Chairman of the MLP Alumni Association Board and a member of the Children's Shelter board. He received his undergraduate degree in Economics from the University of Georgia and his MBA from Indiana Wesleyan University. Mark and his wife, Jane, have four children and two grandchildren.