|4th Quarter/Year-End Results Conference Call|
|Date: Friday, March 16, 2012|
|Time: 1:30 pm EDT; 12:30 pm CDT; 11:30 pm MDT and 10:30 pm PDT|
ATP Oil & Gas Corporation (NASDAQ: ATPG) will host a live conference call on Friday, March 16 th at 12:30 pm CDT to discuss the company’s year-end results followed by a Q&A session. ATP expects to issue a press release announcing 2011 results on Thursday, March 15 th.
ATP invites interested persons to listen to the live webcast on the company’s website at www.atpog.com. Phone participants may dial 888-554-1422. A digital replay of the conference call will be available at 888-203-1112, ID# 4364330, for a period of 24 hours beginning at 5:00 pm CDT. About ATP Oil & Gas Corporation ATP Oil & Gas is an international offshore oil and gas development and production company with operations in the Gulf of Mexico, Mediterranean Sea and North Sea. The company trades publicly as ATPG on the NASDAQ Global Select Market. For more information about ATP Oil & Gas Corporation, visit www.atpog.com.