Athlon Energy Announces Secondary Public Offering of Common Stock

Athlon Energy Inc. (NYSE: ATHL) (“Athlon”) announced today the commencement of an underwritten public offering of 12,500,000 shares of common stock by certain selling stockholders that are funds affiliated with Apollo Global Management, LLC (NYSE: APO) pursuant to a registration statement on Form S-1 filed previously with the U.S. Securities and Exchange Commission (“SEC”). The selling stockholders have also granted the underwriters a 30-day option to purchase up to an additional 1,875,000 shares of common stock. Athlon will not sell any shares of common stock in the offering and will not receive any proceeds therefrom.

Citigroup Global Markets Inc. and Goldman, Sachs & Co. are acting as joint book-running managers for the offering. The offering of these securities will be made only by means of a prospectus. When available, a copy of the preliminary prospectus may be obtained from:

About Athlon

Athlon 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.

Important Information

A registration statement relating to these securities has been filed with the SEC but has not yet been declared effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. The registration statement may be obtained free of charge at the SEC’s website at www.sec.gov under the registrant’s name, “Athlon Energy Inc.” This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or jurisdiction.

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 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.

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 the prospectus filed with the SEC in connection with this offering. The risk factors and other factors noted in Athlon’s prospectus could cause our actual results to differ materially from those contained in any forward-looking statement.