FOURTH AMENDMENT TO PURCHASE AND SALE AGREEMENT

Exhibit 2.6

FOURTH AMENDMENT TO PURCHASE AND SALE AGREEMENT

This Fourth Amendment to Purchase and Sale Agreement (this “Fourth Amendment”), is dated as of June 21, 2012, by and between Energy & Exploration Partners, LLC, a Delaware limited liability company (“Seller”), and Halcón Energy Properties, Inc., a Delaware corporation (and f/k/a RWG Energy, Inc.) (“Buyer”). Seller and Buyer are sometimes referred to herein, individually, as a “Party” and, collectively, as the “Parties.”

RECITALS

WHEREAS, Buyer and Seller entered into that certain Purchase and Sale Agreement (Non-Producing Properties) dated as of March 5, 2012, as amended by First Amendment to Purchase and Sale Agreement dated as of April 19, 2012, Second Amendment to Purchase and Sale Agreement dated as of May 10, 2012, and Third Amendment to Purchase and Sale Agreement dated as of May 24, 2012, (as so amended, the “Purchase Agreement”); and

WHEREAS, Buyer and Seller desire additionally to amend the Purchase Agreement in several respects, as provided herein. Capitalized terms used but not otherwise defined herein shall have the meanings attributed to them in the Purchase Agreement.

NOW, THEREFORE, in consideration of the mutual covenants and conditions set forth herein and in the Purchase Agreement, Buyer and Seller hereby agree as follows:

AGREEMENT AND AMENDMENT

1. Exhibit A. Exhibit A attached to the Purchase Agreement is amended to add thereto the descriptions of, and other information required under Section 2(a) of the Purchase Agreement relating to, those Supplemental Leases identified on Exhibit A to this Fourth Amendment. At the Second Interim Closing, Seller shall sell to Buyer, subject to and in accordance with the terms of the Purchase Agreement, an undivided interest identical to that set forth in Section 1(a) of the Purchase Agreement in and to the Supplemental Leases described on Exhibit A to this Fourth Amendment, together with the interests related thereto identical to those described in clauses (b), (c), (d), and (e) of Section 1 of the Purchase Agreement, which interests in such Supplemental Leases shall constitute Interim Supplemental Properties for all purposes of the Purchase Agreement.

2. Interim Purchase Price. The Interim Purchase Price payable by Buyer to Seller at the Second Interim Closing under Section 3(c) of the Purchase Agreement shall be as set forth on Exhibit B to this Fourth Amendment.

3. Exhibit C. Exhibit C attached to the Purchase Agreement, which described the AMI, is deleted in its entirety and is replaced by the plat attached to this Fourth Amendment as Exhibit C. Buyer and Seller hereby designate, as the AMI created under the terms of the Purchase Agreement, the outlined area in Madison, Grimes, and Walker Counties, Texas, shown on Exhibit C to this Fourth Amendment, effective as of March 5, 2012.

4. References. All references to the Purchase Agreement in any document, instrument, agreement, or writing delivered pursuant to the Purchase Agreement (as amended hereby) shall hereafter be deemed to refer to the Purchase Agreement as amended hereby.

5. Counterparts. This Fourth Amendment may be executed in any number of counterparts, and each such counterpart hereof shall be deemed to be an original instrument, but all of such counterparts shall constitute for all purposes one agreement. Any signature hereto delivered by a Party by facsimile transmission shall be deemed an original signature hereto.

6. Ratification. The Purchase Agreement, as amended hereby, is hereby adopted, ratified, and confirmed by Buyer and Seller.

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IN WITNESS WHEREOF, the Parties have executed this Fourth Amendment as of the date first written above.

EXHIBITS:

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