Kosmos Energy Ltd. — Director's Dealing 2012

May 18, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Kosmos Energy Ltd. (KOS)
CIK: 0001509991
Period of Report: 2012-05-16

Reporting Person: Dailly Paul A (SVP, Exploration)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-05-16	Common Shares	J	132006	$10.52	Disposed	6227181	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Shares	1514666	Indirect

Footnotes

F1: These shares were withheld by the Issuer to satisfy the tax withholding requirement arising from the vesting of restricted shares granted to the reporting person under the Issuer's Long Term Incentive Plan.

F2: These shares are directly owned by Dailly-Simmie Ventures, Ltd., an entity controlled by the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.