X0305 4 2012-04-02 0 0001084817 RESPONSYS INC MKTG 0001517208 CASACUBERTA ANTONIO C/O RESPONSYS, INC. 900 CHERRY AVENUE, 5TH FLOOR SAN BRUNO CA 94066 0 1 0 0 Chief Product Officer Common Stock 2012-04-02 4 M 0 2000 1.96 A 2000 D Common Stock 2012-04-02 4 S 0 2000 11.8658 D 0 D Employee Stock Option (right to buy) 1.96 2012-04-02 4 M 0 2000 0 D 2017-09-19 Common Stock 2000 442000 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 10, 2011. Represents the aggregate of sales effected on the same day at different prices pursuant to the plan in footnote (1). Represents the weighted average sales price per share. The shares sold at prices ranging from $11.8002 to $11.99 per share. Full information regarding the number of shares sold at each price shall be provided upon request to the staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder of the Issuer. The stock option grant is 100% vested and immediately exercisable. /s/ Antonio Casacuberta by Julian K. Ong, Attorney-in-Fact 2012-04-04