X0205 3 2012-04-19 0 0001223862 INFOBLOX INC BLOX 0001375294 Gerson Fred 4780 EASTGATE MALL SAN DIEGO CA 92121 1 0 0 0 Common Stock 10000 I By trust Stock option (right to buy) 9.78 2021-12-13 Common Stock 56666 D Shares held of record by the Fred M. Gerson 2000 Trust dated February 11, 2000, of which Mr. Gerson serves as trustee. The option vests and is exercisable as to 25% of the total grant amount on November 30, 2012 and the remaining shares underlying the option vest 2.0833% monthly thereafter. /s/ Robert Horton as attorney-in-fact for Fred M. Gerson 2012-04-19