X0202 4 2008-03-24 0 0001022345 MARINER ENERGY INC ME 0001030191 KARNES JOHN H JR ONE BRIARLAKE PLAZA, SUITE 2000 2000 WEST SAM HOUSTON PARKWAY SOUTH HOUSTON TX 77042 0 1 0 0 Sr. VP, CFO & Treasurer Common Stock 2008-03-24 4 A 0 24137 A 59895 D Shares of restricted stock granted on March 24, 2008 under the issuer's Stock Incentive Plan, as amended or restated from time to time. The shares vest 25% on each of the first four anniversaries of the date of grant. The number of shares granted was determined by reference to the closing price per share of the issuer's common stock on the New York Stock Exchange on March 24, 2008 of $26.93. John H. Karnes by Teresa G. Bushman pursuant to Power of Attorney dated October 17, 2006 (previously filed as Exhibit 24 to Mr. Karnes' Form 3 filed on October 20, 2006) 2008-03-25