ArcSight Inc.

Stewart Grierson has served as our Chief Financial Officer since October 2004 and also served as our Vice President of Finance from March 2003 to April 2007. In addition, from January 2003 to January 2006, he served as our Secretary. From 1999 to July 2002, Mr. Grierson served in several positions for ONI Systems Corp., a provider of optical communications equipment, including most recently as Vice President and Corporate Controller. From 1992 to 1999, he served in various roles in the audit practice at KPMG LLP. He holds a B.A. in economics from McGill University and is a chartered accountant.

Hugh S. Njemanze co-founded ArcSight in May 2000 and has served as our Executive Vice President of Research Development and Chief Technology Officer since March 2002. From 1993 to 2000, Mr. Njemanze served in various positions at Verity, Inc., a provider of knowledge retrieval software products, most recently as its Chief Technology Officer. He holds a B.S. in computer science from Purdue University.

Lionel joined ArcSight from Siebel where he was responsible for worldwide customer support of 12 Siebel products which included mature products as well as emerging technology. Prior to that Lionel managed Technical Support at Business Objects. Lionel has a Masters in Administration and Management from the Business School in Marseilles and Masters in Economics in International Context from the University of Paris La Sorbonne.

E. Stanton McKee, Jr. has served as a director since February 2005. From 1989 until his retirement in November 2002, Mr. McKee served in various positions at Electronic Arts Inc., a developer and publisher of interactive entertainment, most recently as Executive Vice President and Chief Financial and Administrative Officer. He also serves as a director of LeapFrog Enterprises, Inc., a provider of technology-based educational products, and of a private company. Mr. McKee holds a B.A. in political science from Stanford University and an M.B.A. from Stanford University Graduate School of Business.

Ernie is a Director of Arcsight, Good Technology, Levanta, BDNA, Optaros, and several other private technology companies. He was co-founder of the Research Board where he directed the professional staff into examinations of evolving business models, advanced technology, business applications and IT best practices. He holds a B.A. from Brown University and an M.B.A. from New York University. His articles have appeared in the Harvard Business Review, Computerworld and Fortune.