ATP Marks Anniversaries with Ringing of NASDAQ Opening Bell

HOUSTON--()--ATP Oil & Gas Corporation (NASDAQ: ATPG) today announced that Chairman and CEO T. Paul Bulmahn together with President Leland E. Tate and Chief Financial Officer Albert L. Reese, Jr. will ring The NASDAQ Stock Market Opening Bell in New York City on Friday, February 4, 2011. The ceremony commemorates ATP’s 10-year listing as a publicly traded company on NASDAQ and 20-year corporate anniversary in 2011.

A live webcast of the bell ringing ceremony will be available from 9:15 a.m. to 9:30 a.m. EST at http://www.nasdaq.com/about/marketsitetowervideo.asx and at www.atpog.com.

About ATP Oil & Gas Corporation

ATP Oil & Gas is focused on development and production of oil and natural gas in the Gulf of Mexico and the 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.

Contacts

ATP Oil & Gas Corporation, Houston
Chairman and CEO
T. Paul Bulmahn, 713-622-3311
or
Chief Financial Officer
Albert L. Reese Jr., 713-622-3311
www.atpog.com

Release Summary

ATP marks two anniversaries with the ringing of the NASDAQ stock market opening bell

Contacts

ATP Oil & Gas Corporation, Houston
Chairman and CEO
T. Paul Bulmahn, 713-622-3311
or
Chief Financial Officer
Albert L. Reese Jr., 713-622-3311
www.atpog.com