X0303 4 2011-05-26 0 0001123647 ATP OIL & GAS CORP ATPG 0001244742 WENDLANDT WALTER 4600 POST OAK PLACE SUITE 200 HOUSTON TX 77070 1 0 0 0 Common Stock (Restricted) 2011-05-26 4 A 0 5322 18.79 A 44282 D Restricted stock vests as follows: 2,660 shares on May 26, 2012 or on the date of the 2012 annual meeting, whichever is earlier; 1,331 shares on May 26, 2013 or on the date of the 2013 annual meeting, whichever is earlier; and 1,331 shares on May 26, 2014 or on the date of the 2014 annual meeting, whichever is earlier. 11,319 shares are unvested Restricted Common Stock. Walter Wendlandt 2011-05-26