Mark C. Rohr
Mark Rohr, 62, joined Ashland's board of directors in 2008 and serves on the Audit and Environmental, Health, Safety and Quality committees.
Mr. Rohr is chairman of the board and chief executive officer of Celanese Corp., a position he has held since April 2012. Prior to that, he served as executive chairman of Albemarle Corp. Previously, he held several executive positions with Albemarle, including chief executive officer, president and chief operating officer. Before joining Albemarle, he served with Occidental Chemical Corp. as senior vice president – specialty chemicals. Mr. Rohr also serves on the executive committee of the American Chemistry Council and the advisory board of Mississippi State University College of Arts and Sciences.