SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
BCP IV GP L.L.C.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
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)
3. Date of Earliest Transaction (Month/Day/Year)
02/21/2013
4. If Amendment, Date of 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
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)
Code V Amount (A) or (D) Price
Common Shares 02/21/2013 S 11,555,266 D $10.5875 (1) 106,761,445 I See Footnotes (2) (7) (8)
Common Shares 02/21/2013 S 188,444 D $10.5875 (1) 1,741,071 I See Footnotes (3) (7) (8)
Common Shares 02/21/2013 S 304,796 D $10.5875 (1) 2,816,074 I See Footnotes (4) (7) (8)
Common Shares 02/21/2013 S 253,071 D $10.5875 (1) 2,338,172 I See Footnotes (5) (7) (8)
Common Shares 02/21/2013 S 34,362 D $10.5875 (1) 317,477 I See Footnotes (6) (7) (8)
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 Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
BCP IV GP L.L.C.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
BLACKSTONE CAPITAL PARTNERS CAYMAN IV LP

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
BLACKSTONE CAPITAL PARTNERS CAYMAN IV- A LP

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
BLACKSTONE FAMILY INVESTMENT PARTNERSHIP IV-A LP

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Family Investment Partnership (Cayman) IV-A SMD L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Blackstone Participation Partnership (Cayman) IV L.P.

(Last) (First) (Middle)
C/O THE BLACKSTONE GROUP L.P.
345 PARK AVENUE

(Street)
NEW YORK NY 10154

(City) (State) (Zip)
Explanation of Responses:
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.
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.
/s/ John G. Finley, Chief Legal Officer of BCP IV GP L.L.C. 02/25/2013
/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. 02/25/2013
/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. 02/25/2013
/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. 02/25/2013
/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. 02/25/2013
/s/ John G. Finley, Chief Legal Officer, BCP IV GP L.L.C., general partner of Blackstone Participation Partnership (Cayman) IV L.P. 02/25/2013
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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