X0304 4 2012-03-12 0 0001107694 RACKSPACE HOSTING, INC. RAX 0001441432 Schoenbaum Alan C/O RACKSPACE HOSTING, INC. 5000 WALZEM ROAD SAN ANTONIO TX 78218 0 1 0 0 Sr. V.P., GC, and Secretary Common Stock 2012-03-12 4 M 0 3751 0 A 110895 D Common Stock 2012-03-12 4 S 0 5833 53.0218 D 105062 D Employee Stock (Option Right to Buy) 19.51 2012-03-12 4 M 0 3751 0 D 2020-03-10 Common Stock 3751 7502 D These shares were sold pursuant to Mr. Schoenbaum's Rule 10b5-1 trading plan. Mr. Schoenbaum sold 2,082 shares 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 these shares range from $52.66 to $53.93 per share. The registrant undertakes to provide upon request of 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. 1/4 of the options vest annually and become exercisable on each anniversary of the grant date of 3/10/2010. /s/ William Alberts by Power of Attorney 2012-03-14