JoEllen Lyons Dillon

Dillon currently serves as chief legal officer and corporate secretary of The ExOne Company, a global provider of three-dimensional printing machines. Prior to that, Dillon was a partner at law firms Reed Smith LLP and Buchanan Ingersoll & Rooney PC, advising public companies and their boards on matters including mergers and acquisitions, securities law and corporate governance. She is the former Chair, and currently serves as the Audit Committee Chair, of the Allegheny District chapter of the National Multiple Sclerosis Society. Ms. Dillon has served as our Executive Vice President, Chief Legal Officer and Corporate Secretary since December 2014, and she previously served as our Chief Legal Officer and Corporate Secretary beginning in March 2013. From May 2012 through February 2013, she was a legal consultant on our initial public offering. She previously was a partner at two national law firms, Reed Smith LLP from 2002 until 2011 and Buchanan Ingersoll & Rooney PC from 1988 until 2002, where she became a partner after starting as an associate with the firm. Ms. Dillon has served on the Board of Directors of Mylan Inc., a global pharmaceutical company, since May 2014. She also serves on the Mylan Board’s Compliance Committee. Ms. Dillon was the former Chair, and currently serves as the Audit Committee Chair of, the Allegheny District chapter of the National Multiple Sclerosis Society. She also is a Vice President of the Wine & Spirits Advisory Council to the Pennsylvania Liquor Control Board.