William K. O'Brien
Mr. O’Brien served as Executive Chairman at Enterasys Networks from 2003 until his retirement in 2006. He served as Chief Executive Officer of Enterasys from 2002 to 2004. Prior to working at Enterasys, he worked for PricewaterhouseCoopers where he held several different senior management positions. Mr. O’Brien had over 33 years of experience in auditing and professional services while at PricewaterhouseCoopers.