X0303 4 2010-03-15 0 0001107694 RACKSPACE HOSTING, INC. RAX 0001119355 WESTON GRAHAM M C/O RACKSPACE HOSTING, INC. 5000 WALZEM ROAD SAN ANTONIO TX 78218 1 1 1 0 Chairman Common Stock 2010-03-15 4 S 0 50000 18.7314 D 992302 I Shares held by Wittington America, Ltd. Common Stock 2010-03-16 4 S 0 50000 18.5674 D 942302 I Shares held by Wittington America, Ltd. Common Stock 25000 D Common Stock 19478564 I Shares held by Trout, Ltd. Common Stock 85227 I Shares held by the Weston Remainderman Fund. Common Stock 91266 I Shares held by or for the benefit of family members. Mr. Weston is the sole owner of Knightsbridge, LC which is the general partner of Trout, Ltd. Mr. Weston's children are the beneficiaries of the Weston Remainderman Fund trust. Mr. Weston disclaims any beneficial ownership of the shares held by the trust. Mr. Weston is the sole owner of Knightsbridge, LC which is the general partner of Wittington America, Ltd. Mr. Weston disclaims any beneficial ownership of Wittington America, Ltd. except to the extent of any pecuniary interest therein. These shares were sold pursuant to Wittington America, Ltd. Rule 10b5-1 trading plan adopted by the general partner of Wittington America, Ltd. on December 14, 2009. The prices for these sales of shares ranged from $18.52 to $19.16 per share. The prices for these sales of shares ranged from $18.47 to $18.73 per share. The registrant undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares purchased or sold at each separate price. /s/ William Alberts by Power of Attorney 2010-03-16