(a) Financial statements of businesses acquired.

The audited statements of revenues and direct operating expenses, including notes thereto, for the oil and natural gas properties acquired by Legacy from Concho Resources, Inc. for the year ended December 31, 2011 and for the nine months ended September 30, 2012, and the independent auditor's report related thereto, are attached hereto as Exhibit 99.1 and incorporated by reference.

(b) Pro forma financial information.

The unaudited pro forma combined balance sheet at September 30, 2012 which gives effect to the COG 2012 Acquisition Properties and the unaudited combined pro forma statements of operations for the year ended December 31, 2011 and for the nine months ended September 30, 2012 which give effect to the COG 2012 Acquisition Properties, are attached hereto as Exhibit 99.2 and incorporated herein by reference.

(d) Exhibits

 Exhibit Number                              Description
Exhibit 23.1 *     Consent of Independent Auditors - BDO USA, LLP
Exhibit 99.1 *     The audited statements of revenues and direct operating
                   expenses, including the notes thereto, for the COG 2012
                   Acquisition Properties for the year ended December 31, 2011 and
                   for the nine months ended September 30, 2012.
Exhibit 99.2 *     The unaudited pro forma combined balance sheet at September 30,
                   2012 which gives effect to the COG 2012 Acquisition Properties
                   and the unaudited combined pro forma statements of operations
                   for the year ended December 31, 2011 and for the nine months
                   ended September 30, 2012 which give effect to the COG 2012
                   Acquisition Properties.

* filed herewith