Atlas Resource Partners, L.P. (“Atlas”) (NYSE: ARP) announces today that Atlas Resource Partners will be presenting at the NAPTP MLP Investor Conference on Wednesday, May 23rd in Greenwich, CT. Matthew A. Jones, President & Chief Operating Officer, and Sean P. McGrath, Chief Financial Officer, will be presenting for Atlas Resource Partners at 4:00pm ET. Investors and the general public are invited to listen to the live webcast of the presentation at www.atlasresourcepartners.com under the Event Calendar page of the Investor Relations section of the site. Atlas Resource Partners, L.P. (NYSE: ARP) is an exploration & production master limited partnership which owns an interest in over 8,600 producing natural gas and oil wells, representing approximately 450 Bcfe of net proved reserves, primarily in Appalachia and the Barnett Shale in Texas. ARP is also the largest sponsor of natural gas and oil investment partnerships in the U.S. For more information, please visit our website at www.atlasresourcepartners.com, or contact Investor Relations at InvestorRelations@atlasenergy.com. Atlas Energy, L.P. (NYSE: ATLS) is a master limited partnership which owns all of the general partner interest, all the incentive distribution rights and approximately 64% of the limited partner interests in its upstream oil & gas subsidiary, Atlas Resource Partners, L.P. Additionally, Atlas Energy owns and operates the general partner of its midstream oil & gas subsidiary, Atlas Pipeline Partners, L.P., through all of the general partner interest, all the incentive distribution rights and an approximate 11% limited partner interest. For more information, please visit our website at www.atlasenergy.com, or contact Investor Relations at InvestorRelations@atlasenergy.com.