FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   Haas Eric 2. Date of Event Requiring Statement (Month/Day/Year) 01/15/2013 3. Issuer Name and Ticker or Trading Symbol Kosmos Energy Ltd. [KOS] (Last) (First) (Middle) C/O KOSMOS ENERGY, LLC, 8176 PARK LANE, SUITE 500 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP, Production & Tech. Srvcs 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) DALLAS, TX 75231 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 89,313 (1) D   Common Stock 306,038 (2) I See footnote (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Haas Eric C/O KOSMOS ENERGY, LLC 8176 PARK LANE, SUITE 500 DALLAS, TX 75231	Â	Â	  SVP, Production & Tech. Srvcs	Â

Signatures

/s/ Phillip Feiner, as Attorney-in-Fact		01/23/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	This number includes: (a) 58,824 restricted shares that were granted under the Issuer's Long-Term Incentive Plan (the "Plan") and are scheduled to vest on May 16, 2015, subject to the satisfaction of service and performance conditions specified in the Plan and the applicable award agreement issued under the plan, which terms provide for accelerated vesting under specified circumstances; (b) 30,289 restricted share units that were granted under the Plan and are scheduled to vest 25% on June 1 of each 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; and (3) 100 shares held jointly by the reporting person and his minor daughter.
(2)	These shares are directly owned by Alaminos, LP, 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. This number includes: (a) 196,921 restricted shares that were granted under the Plan and are scheduled to vest 50% on April 27 of each of 2013 and 2015, subject to the terms of the Plan and the applicable award agreement issued thereunder, which terms provide for accelerated vesting under specified circumstances; and (b) 44,118 restricted shares that were granted under the Plan and are scheduled to vest one-third on May 16 of each of 2013, 2014 and 2015, subject to the terms of the Plan and the applicable award agreement issued thereunder, which terms provide for accelerated vesting under specified circumstances.

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