X0303 4 2009-05-23 0 0001022345 MARINER ENERGY INC ME 0001362313 MOLOHON RICHARD A ONE BRIARLAKE PLAZA, SUITE 2000 2000 WEST SAM HOUSTON PARKWAY SOUTH HOUSTON TX 77042 0 1 0 0 VP-Reservoir Engineering Common Stock 2009-05-23 4 F 0 1321 D 98929 D Employee Stock Option (right to buy) 14 2006-03-02 2015-03-11 Common Stock 8000 8000 D On May 23 2009, 3,625 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 May 22, 2009 of $11.90. Richard A. Molohon by Teresa G. Bushman pursuant to Power of Attorney dated May 9, 2006 (previously filed as Exhibit 24 to Mr. Molohon's Form 3/A filed on May 23, 2006) 2009-05-26