ATP Continues Investor Contacts

ATP Oil & Gas Corporation (NASDAQ:ATPG) embarks October 22 — 26 on a multi-city investor tour of the South and West in which Vice President of Finance Brian C. Nelson will meet one-on-one with institutional investors in San Antonio, Austin, Seattle, Denver and San Diego. On Wednesday, October 24th, institutional investors have another opportunity to meet in the South with ATP management when, beginning at 9:30 am EDT, Chief Financial Officer Albert L. Reese, Jr. presents at Canaccord Adams Global Energy Conference in Miami. To listen to the live webcast of Mr. Reese’s presentation and to access the identical PowerPoint slides to be used during the investor tour and conference, log on to ATP’s website at www.atpog.com. Forward requests for one-on-one meetings to sthornton@atpog.com.

About ATP Oil & Gas

ATP Oil & Gas is an international offshore oil and gas development and production company with operations 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, visit www.atpog.com.