Donald M. Sullivan

Donald M.
Sullivan has been a director of Entegris since December 2003.
Mr. Sullivan served as 69 2005 Chief Executive Officer of MTS Systems Corporation from 1988 to 1998 and as Chairman from 1994 to 1999.
Prior positions at MTS starting in 1976 included President and Chief Operating Officer.
Mr. Sullivan has previously served on the Board of Directors of public and private companies, and non-profit organizations.