Athlon Holdings LP and Athlon Finance Corp., part of Athlon Energy Inc. (NYSE: ATHL), closed an upsized offer of $650 million, in total amount, of 6% senior unsecured notes, Athlon Energy said May 1.

Net proceeds will support pending acquisitions, the company said. The net proceeds from a concurrent equity offering, and perhaps credit borrowings, will also support the acquisitions, Athlon Energy added.

The notes were issued in a private placement and were scheduled to mature May 1, 2022, Athlon Energy said.

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