X0303 4 2011-05-26 0 0001123647 ATP OIL & GAS CORP ATPG 0001367368 Adams Burt A 4600 POST OAK PLACE, SUITE 200 HOUSTON TX 77027 1 0 0 0 Common Stock (Restricted) 2011-05-26 4 A 0 5322 18.79 A 55526 D Restricted shares will vest as follows: 2,660 on May 26, 2012 or the date of the 2012 annual meeting, whichever is earlier, 1,331 on May 26, 2013 or the date of the 2013 annual meeting, whichever is earlier, and 1,331 shares on May 26, 2014 or the date of the 2014 annual meeting, whichever is earlier. 11,319 shares are unvested Restricted Common Stock. Burt A. Adams 2011-05-26