X0306 4 2012-07-23 0001509991 Kosmos Energy Ltd. KOS 0001191413 TONG CHRIS C/O KOSMOS ENERGY, LLC 8176 PARK LANE, SUITE 500 DALLAS TX 75231 1 0 0 0 Common Shares 2012-07-23 4 A 0 11650 0 A 50003 D These restricted share units were granted under the Issuer's Long Term Incentive Plan (the "Plan") and are scheduled to vest 25% on each July 23 of 2013, 2014, 2015 and 2016, subject to the terms of the Plan and the applicable award agreement issued thereunder, which terms provide for accelerated vesting under specified circumstances. /s/ Phillip Feiner, as Attorney-in-Fact 2012-07-24