SEC FORM 4

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^*

MELENDREZ JESUS G

(Last)

(First)

(Middle)

ONE BRIARLAKE PLAZA, SUITE 2000

2000 WEST SAM HOUSTON PARKWAY SOUTH

(Street)

HOUSTON

77042

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
MARINER ENERGY INC [ ME ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Sr VP Chief Com Ofr Acting CFO

3. Date of Earliest Transaction (Month/Day/Year)
11/10/2010

4. 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 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 Stock	11/10/2010		F		58,941	D	⁽¹⁾	211,988	D
Common Stock	11/10/2010		D		211,988	D	⁽²⁾	0	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Employee Stock Option (right to buy)	$14	11/10/2010		D			40,000	03/11/2008	03/11/2015	Common Stock	40,000	⁽³⁾	0	D

Explanation of Responses:

1. On November 10, 2010, 161,731 shares of the issuer's common stock granted to the reporting person under the issuer's Stock Incentive Plan, as amended and restated from time to time (the "Plan"), vested. To satisfy withholding tax obligations in connection with the vesting, the issuer withheld the shares this Form reports were disposed. In accordance with the Plan, the number of shares withheld was determined by reference to the closing price per share of the issuer's common stock on the New York Stock Exchange on November 9, 2010 of $26.50.

2. Disposed of pursuant to an Agreement and Plan of Merger between Apache Corporation ("Apache"), Apache Deepwater LLC and Mariner Energy, Inc., dated 4/14/2010, as amended (the "Merger Agreement"), on 11/10/2010, the effective date of the merger (the "Effective Date"). Pursuant to the Merger Agreement, Mariner stockholders could elect to receive the following consideration: (i) all stock consideration of 0.24347 share of Apache common stock for each share of Mariner common stock, subject to possible proration, (ii) all cash consideration of $26.00 in cash for each share of Mariner common stock, subject to possible proration, and (iii) mixed consideration of $7.80 in cash and 0.17043 share of Apache common stock for each share of Mariner common stock (the "Mixed Consideration"). If no election was made, the stockholder will receive the Mixed Consideration for Mariner common stock. Apache announced it expects to announce final results of merger consideration elections on 11/12/2010.

3. Pursuant to the Merger Agreement, this fully vested option was converted on the Effective Date into a fully vested option to purchase 9,738 shares of Apache common stock for $57.51 per share.

Remarks:

	Jesus G. Melendrez by Scott D. Josey pursuant to Power of Attorney dated March 21, 2006 (previously filed as Exhibit 24 to Mr. Melendrez's Form 4 filed on May 31, 2006)	11/10/2010
	** Signature of Reporting Person	Date
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