Athlon Energy Inc. (NYSE: ATHL) closed a public offering of common shares that had been upsized, the company said April 23.

A total of 14,806,250 common shares were sold at $40 each, Athlon Energy said, noting that the original amount of 11 million shares had been upsized to 12,875,000, and that the total of over 14 million was due to an exercised underwriters’ option.

Net proceeds of about $570.5 million will be used to fund pending acquisitions and to support general corporate purposes, Athlon Energy said. The proceeds will be used alongside the proceeds from a senior notes offering and possibly alongside credit agreement borrowings, the company added.

Citigroup Global Markets Inc. and Goldman, Sachs & Co. were joint book-running managers, the company said.

Credit Suisse Securities (USA) LLC, Wells Fargo Securities LLC, RBC Capital Markets LLC, Scotia Capital (USA) Inc., Barclays Capital Inc. and Tudor, Pickering, Holt & Co. Securities Inc. were also book-running managers, Athlon Energy added.

Apollo Global Securities LLC, Simmons & Co. International, Stephens Inc., UBS Securities LLC, CIBC World Markets Corp. and Mitsubishi UFJ Securities (USA) Inc. were co-managers, the company noted.

Fort Worth, Texas-based Athlon Energy Inc. acquires and develops Permian Basin oil and natural gas.