ATP Welcomes New CEO

ATP Oil & Gas Corporation announced that Mr. Matt McCarroll replaced Mr. T. Paul Bulmahn as Chief Executive Officer of the company. Mr. Bulmahn continues to serve as Chairman and also in the newly created position of Executive Chairman of ATP. However, as of Thursday, June 7, 2012, the company announced that it was unable to reach a mutually agreeable employment agreement with Mr. McCarroll and effective Thursday he has submitted his resignation. In conjunction with his resignation, the previously announced purchase of shares from the company by Mr. McCarroll mentioned in the June 1, 2012 press release was rescinded.