X0304 4 2012-03-12 0 0001107694 RACKSPACE HOSTING, INC. RAX 0001521244 Pichler Karl 5 MILLINGTON ROAD, HYDE PARK HAYES MIDDLESEX X0 UB3 4AZ UNITED KINGDOM 0 1 0 0 CFO Common Stock 2012-03-12 4 S 0 155 53.1882 D 36952 D These shares were sold pursuant to provisions contained in the Company's Form of RSU Agreement and Amended and Restated 2007 Long Term Incentive Plan for the satisfaction of certain tax obligations. The prices for the sale of these shares ranged from $53.12 to $53.22 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 byPower of Attorney 2012-03-14