Edgar Filing: BLACKSTONE CAPITAL PARTNERS CAYMAN IV LP

Ownership Submission

FORM 4

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN 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 ^*

BCP IV GP L.L.C.

2. Issuer Name and Ticker or Trading Symbol
Kosmos Energy Ltd. [KOS]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

_____ Director	__X__ 10% Owner
_____ Officer (give title below)	_____ Other (specify below)

(Last)

(First)

(Middle)

C/O THE BLACKSTONE GROUP L.P., 345 PARK AVENUE

3. Date of Earliest Transaction (Month/Day/Year)
03/15/2013

(Street)

NEW YORK, NY 10154

4. If Amendment, Date Original Filed(Month/Day/Year)

6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ Form filed by More than One Reporting Person

(City)

(State)

(Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1.Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Shares	03/15/2013		S		1,755,619	D	$ 10.5875 ⁽¹⁾	105,005,826	I	See Footnotes ⁽²⁾ ⁽⁷⁾ ⁽⁸⁾
Common Shares	03/15/2013		S		28,631	D	$ 10.5875 ⁽¹⁾	1,712,440	I	See Footnotes ⁽³⁾ ⁽⁷⁾ ⁽⁸⁾
Common Shares	03/15/2013		S		46,308	D	$ 10.5875 ⁽¹⁾	2,769,766	I	See Footnotes ⁽⁴⁾ ⁽⁷⁾ ⁽⁸⁾
Common Shares	03/15/2013		S		38,450	D	$ 10.5875 ⁽¹⁾	2,299,722	I	See Footnotes ⁽⁵⁾ ⁽⁷⁾ ⁽⁸⁾
Common Shares	03/15/2013		S		5,221	D	$ 10.5875 ⁽¹⁾	312,256	I	See Footnotes ⁽⁶⁾ ⁽⁷⁾ ⁽⁸⁾

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.		SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security
(Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code
(Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date
(Month/Day/Year)

7. Title and Amount of Underlying Securities
(Instr. 3 and 4)

8. Price of Derivative Security
(Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)

11. Nature of Indirect Beneficial Ownership
(Instr. 4)

Code

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
BCP IV GP L.L.C. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X
BLACKSTONE CAPITAL PARTNERS CAYMAN IV LP C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X
BLACKSTONE CAPITAL PARTNERS CAYMAN IV- A LP C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X
BLACKSTONE FAMILY INVESTMENT PARTNERSHIP IV-A LP C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X
Blackstone Participation Partnership (Cayman) IV L.P. C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK, NY 10154		X

Signatures

/s/ John G. Finley, Chief Legal Officer of BCP IV GP L.L.C.		03/19/2013
^**Signature of Reporting Person		Date
/s/ John G. Finley, Chief Legal Officer, BCP IV GP L.L.C., general partner of Blackstone Management Associates (Cayman) IV L.P., general partner of Blackstone Capital Partners (Cayman) IV L.P.		03/19/2013
^**Signature of Reporting Person		Date
/s/ John G. Finley, Chief Legal Officer, BCP IV GP L.L.C., general partner of Blackstone Management Associates (Cayman) IV L.P., general partner of Blackstone Capital Partners (Cayman) IV-A L.P.		03/19/2013
^**Signature of Reporting Person		Date
/s/ John G. Finley, Chief Legal Officer, BCP IV GP L.L.C. general partner of Blackstone Family Investment Partnership (Cayman) IV-A L.P.		03/19/2013
^**Signature of Reporting Person		Date
/s/ John G. Finley, Chief Legal Officer, Blackstone Family GP L.L.C. general partner of Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P.		03/19/2013
^**Signature of Reporting Person		Date
/s/ John G. Finley, Chief Legal Officer, BCP IV GP L.L.C., general partner of Blackstone Participation Partnership (Cayman) IV L.P.		03/19/2013
^**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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 amount represents the $11.00 secondary public offering price per common share, par value $0.01 (the "Common Shares") of Kosmos Energy Ltd. (the "Issuer") less the underwriting discount of $0.4125 per share in connection with the exercise by the underwriters of their over-allotment option.
(2)	These Common Shares are held by Blackstone Capital Partners (Cayman) IV L.P. ("BCP Cayman IV").
(3)	These Common Shares are held by Blackstone Capital Partners (Cayman) IV-A L.P. ("BCP Cayman IV-A").
(4)	These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A L.P. ("BFIP").
(5)	These Common Shares are held by Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P. ("BFIP SMD").
(6)	These Common Shares are held by Blackstone Participation Partnership (Cayman) IV L.P. ("BPP").
(7)	The general partner of BFIP SMD is Blackstone Family GP L.L.C. which is controlled by Mr. Stephen A. Schwarzman, its founder. The general partner of BCP Cayman IV and BCP Cayman IV-A is Blackstone Management Associates (Cayman) IV L.P. ("BMA"). A general partner of BMA, BFIP, and BPP is BCP IV GP L.L.C ("BCP IV"). Blackstone Holdings III L.P. is the sole member of BCP IV. The general partner of Blackstone Holdings III L.P. is Blackstone Holdings III GP L.P. The general partner of Blackstone Holdings III GP L.P. is Blackstone Holdings III GP Management L.L.C. The sole member of Blackstone Holdings III GP Management L.L.C. is The Blackstone Group L.P. The general partner of The Blackstone Group L.P. is Blackstone Group Management L.L.C. Blackstone Group Management L.L.C. is controlled by Mr. Stephen A. Schwarzman, its founder.
(8)	Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein, except to the extent of such Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Persons are the beneficial owners of any securities reported herein.
Remarks: Because no more than 10 reporting persons can file any one Form 4 through the Securities and Exchange Commission's EDGAR system, Blackstone Management Associates (Cayman) IV L.P., Blackstone Family GP L.L.C., Blackstone Holdings III L.P., Blackstone Holdings III GP L.P., Blackstone Holdings III GP Management L.L.C., The Blackstone Group L.P., Blackstone Group Management L.L.C. and Stephen A. Schwarzman have filed a separate Form 4.

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