X0303 4 2008-08-13 0001107694 RACKSPACE HOSTING, INC. RAX 0001089744 HAQUE PROMOD 525 UNIVERSITY AVENUE SUITE 800 PALO ALTO CA 94301 0 0 1 0 Common Stock 2008-08-13 4 P 0 862500 12.50 A 17403070 I By limited partnership Includes (i) 4,412,968 shares held by Norwest Venture Partners VII-A, L.P.; (ii) 10,230,967 shares held by Norwest Venture Partners VIII, L.P.; (iii) 509,444 shares held by NVP Entrepreneurs Fund VIII, L.P.; (iv) 2,189,350 shares held by Norwest Venture Partners IX, L.P.; and (v) 60,341 shares held by NVP Entrepreneurs Fund IX, L.P. Mr. Haque is a managing partner of (i) Itasca VC Partners VII-A, LLC, the general partner of Norwest Venture Partners VII-A, L.P.; (ii) Itasca VC Partners VIII, LLP, the general partner of each of Norwest Venture Partners VIII, L.P. and NVP Entrepreneurs Fund VIII, L.P.; and (continued in next footnote) . . . (iii) Genesis VC Partners IX, LLC, the general partner of each of Norwest Venture Partners IX, L.P. and NVP Entrepreneurs Fund IX, L.P., and may be deemed to share voting or dispostive power over the shares held by the entities set forth in this explanation. Mr. Haque disclaims any beneficial ownership of shares held by the entities affiliated with Norwest Venture Partners, except to the extent of any pecuniary interest therein. Kurt L. Betcher, Attorney-In-Fact for Promod Haque 2008-08-14