N. Robert Hammer has served as our Chairman, President and Chief Executive Officer since March 1998. Mr. Hammer was also a venture partner of the Sprout Group, an internal division of Credit Suisse First Boston Private Equity, Inc., from 1997 until December 2003. Prior to joining the Sprout Group, Mr. Hammer served as the chairman, president and chief executive officer of Norand Corporation, a portable computer systems manufacturer, from 1988 until its acquisition by Western Atlas, Inc. in 1997. Mr. Hammer led Norand following its leveraged buy-out from Pioneer Hi-Bred International, Inc. and through its initial public offering in 1993. Prior to joining Norand, Mr. Hammer also served as chairman, president and chief executive officer of publicly-held Telequest Corporation from 1987 until 1988 and of privately-held Material Progress Corporation from 1982 until 1987. Prior to joining Material Progress Corporation, Mr. Hammer spent 15 years in various sales, marketing and management positions with Celanese Corporation, rising to the level of vice president and general manager of the structural composites materials business. Mr. Hammer obtained his bachelor's degree and master's degree in business administration from Columbia University.