Mark graduated from University College Dublin with a degree in Chemical Engineering and spent his early career in pharmaceutical manufacturing with U.S multinationals. Having graduated with an MBA from Erasmus University, Rotterdam he joined Centocor Inc., a leading biopharmaceutical company, becoming European Finance Director.
Since returning to Ireland in the mid-1990s, Mark has held a variety of business leadership roles including CEO of the Mater Private Hospital, Chairman of EBS and Chairman of Sisk Healthcare Group. He is a director of The Fitzwilliam Hotel Group and a former director of Uniphar plc.
Mark has served on several civic society Boards, including the Irish Blood Transfusion Service, The Galway University Foundation, Common Purpose Ireland, the Mater Foundation, and the Dublin Neurological Institute.