X0304 4 2012-02-24 0001471261 Cobalt International Energy, Inc. CIE 0001347251 Drennon Michael D C/O TWO POST OAK CENTRAL 1980 POST OAK BOULEVARD, SUITE 1200 HOUSTON TX 77056 0 1 0 0 EVP & Gen'l Mgr. Cobalt Angola Common Stock 2012-02-24 4 A 0 11475 0 A 127232 D Common Stock 2012-02-24 4 A 0 5647 0 A 132879 D Stock Option 30.50 2012-02-24 4 A 0 20371 0 A 2014-12-31 2022-12-24 Common Stock 20371 20371 D 11,475 shares represent restricted shares granted under the Issuer's Long Term Incentive Plan (the "Plan") that will vest on December 31, 2014, subject to the terms of the award agreement under the Plan. 5,647 shares represent shares received in connection with the vesting of performance-based restricted stock units granted under the Plan on December 3, 2010. /s/ Jeffrey A. Starzec, Attorney-in-Fact 2012-02-28