SEC FORM 3

SEC Form 3

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
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

MURCHISON JOHN HARDY

(Last)

(First)

(Middle)

C/O FIRST RESERVE CORPORATION

ONE LAFAYETTE PLACE, THIRD FLOOR

(Street)

GREENWICH

06830

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
12/16/2009

3. Issuer Name and Ticker or Trading Symbol
Cobalt International Energy, Inc. [ CIE ]

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

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

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

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	0⁽¹⁾	I	See Footnote⁽¹⁾

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: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:

1. The Reporting Person does not beneficially own any derivative or non-derivative securities of Cobalt International Energy, Inc. (the "Issuer"). The Reporting Person is an officer of First Reserve GP XI, Inc. ("GP XI Inc."). GP XI Inc. is the general partner of First Reserve GP XI, L.P. ("GP XI"). GP XI is the general partner of First Reserve Fund XI, L.P. ("Fund XI") and FR XI Onshore AIV, L.P. ("Onshore AIV" and collectively with Fund XI, GP XI and GP XI Inc., the "Fund Entities"). Fund XI and Onshore AIV are each holders of equity securities of the Issuer. The Reporting Person disclaims beneficial ownership of any securities of the Issuer beneficially owned by any of the Fund Entities for purposes of Section 16 or any other purpose.

	/s/ J. Hardy Murchison by Anne E. Gold, Attorney-in-Fact. See attached Power of Attorney.	12/16/2009
	** 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 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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