Atlas Resource Partners, L.P. Files 2013 Annual Report

Atlas Resource Partners, L.P. (NYSE: ARP) (“ARP” or “the Company”) announced today the filing of its 10-K for the year ending December 31, 2013 with the Securities and Exchange Commission (SEC). An electronic copy of the report is available on the ‘SEC Filings’ page in the Investor Relations section of the Company’s website, www.atlasresourcepartners.com.

Atlas Resource Partners unitholders and other interested investors may also request a printed copy of the annual report free of charge by calling (888) 400-7789 or by completing a request form in the Investor Relations section of the Company’s website on the ‘Annual Report Request’ page. Requests for printed copies of the annual report will be delivered in early April.

Atlas Resource Partners, L.P. (NYSE: ARP) is an exploration & production master limited partnership which owns an interest in over 13,000 producing natural gas and oil wells, located primarily in Appalachia, the Barnett Shale (TX), the Raton Basin (NM) and Black Warrior Basin (AL). 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 Class A units and incentive distribution rights and an approximate 37% limited partner interest 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 6% limited partner interest. For more information, please visit our website at www.atlasenergy.com, or contact Investor Relations at InvestorRelations@atlasenergy.com.