X0203 3 2011-05-11 0 0001509991 Kosmos Energy Ltd. KOS 0001517321 Dailly Paul A C/O KOSMOS ENERGY, LLC 8176 PARK LANE, SUITE 500 DALLAS TX 75231 0 1 0 0 Senior VP, Exploration Common Stock 0 D The reporting person does not hold securities of the Issuer. The reporting person currently holds units in Kosmos Energy Holdings, the Issuer's predecessor. In connection with a corporate reorganization, which will involve Kosmos Energy Holdings becoming wholly-owned by the Issuer and will be completed on or prior to the closing of the Issuer's initial public offering described in the prospectus dated May 11, 2011, the reporting person will receive common shares and restricted shares of the Issuer in exchange for his vested and unvested units in Kosmos Energy Holdings, respectively. /s/ Phillip Feiner, as Attorney-in-Fact 2011-05-11