The participants in the proxy solicitation are anticipated to be Starboard Value and Opportunity Master Fund Ltd ("Starboard V&O Fund"), Starboard Value and Opportunity S LLC ("Starboard S LLC"), Starboard Value and Opportunity C LP ("Starboard C LP"), Starboard Value and Opportunity Master Fund L LP ("Starboard L Master"), Starboard Value L LP ("Starboard L GP"), Starboard Value R LP ("Starboard R LP"), Starboard Value R GP LLC ("Starboard R GP"), Starboard X Master Fund Ltd ("Starboard X Master"), Starboard Value LP, Starboard Value GP LLC ("Starboard Value GP"), Starboard Principal Co LP ("Principal Co"), Starboard Principal Co GP LLC ("Principal GP"), Jeffrey C. Smith, Peter A. Feld, Geoff Ribar and Anna Christine Simons.