Mr. Leo Berlinghieri has been the Chief Executive Officer of MKS Instruments, Inc., since July 1, 2005 and served as its President from April 2004 to February 2013. Mr. Berlinghieri served in a variety of roles at MKS Instruments including Chief Operating Officer from July 2003 to July 2005, Vice President from July 2003 to April 2004, and Vice President of Global Sales and Service from November 1995 to July 2003. From 1980 to November 1995, Mr. Berlinghieri served in various management positions of MKS, including Manufacturing Manager, Production and Inventory Control Manager, and Director of Customer Support Operations. Mr. Berlinghieri has over over 30 years of experience. He has been a Director at Rudolph Technologies Inc., since September 18, 2008 and MKS Instruments, Inc. since July 1, 2005. Mr. Berlinghieri serves as a Director at Large of the TQM-BASE Council Inc.