Athlon Energy (NYSE: ATHL) (“Athlon” or the “Company”) has closed all of its previously announced acquisitions in the northern Midland Basin for an aggregate purchase price of $873 million in cash. The Company previously disclosed that it had closed on approximately $200 million of the acquisitions in early May.

As previously disclosed, the acquisitions include 23,500 net acres in Martin, Upton, Andrews, and Glasscock counties with estimated current net production of approximately 4,800 BOE/d, 100% operated, net proved reserves of 31 MMBOE (39% PD), and a total estimated net reserve potential of over 250 MMBOE. The final purchase prices are subject to further customary post-closing adjustments. The Company funded the acquisitions with proceeds from its recently completed offerings of common stock and senior unsecured notes.

About Athlon Energy

Athlon Energy is an independent exploration and production company focused on the acquisition, development, and exploitation of unconventional oil and liquids-rich natural gas reserves in the Permian Basin.

Cautionary Statement Concerning Forward-Looking Statements

Certain statements contained in this press release constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.These forward-looking statements, including, without limitation, the benefits of acquisitions, represent Athlon’s expectations or beliefs concerning future events, and it is possible that the results described in this press release will not be achieved.These forward-looking statements are subject to risks, uncertainties, and other factors, many of which are outside of Athlon’s control, which could cause actual results to differ materially from the results discussed in the forward-looking statements. Athlon’s estimates of proved reserves are based on internal analysis of production data provided by the sellers, as well as available geologic and other data, and the Company may revise its estimates following ownership of these properties.

Any forward-looking statement speaks only as of the date on which it is made, and, except as required by law, Athlon does not undertake any obligation to update or revise any forward-looking statement, whether as a result of new information, future events, or otherwise.New factors emerge from time to time, and it is not possible for Athlon to predict all such factors.When considering these forward-looking statements, you should keep in mind the risk factors and other cautionary statements in Athlon’s filings with the United States Securities and Exchange Commission.The risk factors and other factors noted in Athlon’s filings could cause Athlon’s actual results to differ materially from those contained in any forward-looking statement.