UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): July 16, 2012

HALCÓN RESOURCES CORPORATION

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (832) 538-0300

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On July 16, 2012, Halcón Resources Corporation (the “Company”) issued and sold to certain initial purchasers (the “Initial Purchasers”) $750 million aggregate principal amount of its 9.75% senior notes due 2020 (the “Notes”) at a purchase price of 98.646% of the principal amount of the Notes.

In connection with the sale of the Notes, the Company entered into a Registration Rights Agreement, dated July 16, 2012, between the Company and Barclays Capital Inc., on behalf of the Initial Purchasers (the “Registration Rights Agreement”). Pursuant to the Registration Rights Agreement, the Company has agreed to conduct a registered exchange offer for the Notes or cause to become effective a shelf registration statement providing for the resale of the Notes. In connection with the exchange offer, the Company is required to (a) file an exchange offer registration statement (the “Registration Statement”) and use reasonable best efforts to cause such Registration Statement to become effective, (b) promptly following the effectiveness of the Registration Statement, offer to exchange each Note for a new note of the Company having terms substantially identical in all material respects to such Note, and (c) keep the registered exchange offer open for not less than 20 business days after the date notice of the exchange offer is mailed to the holders of the Notes. If the exchange offer is not consummated within 365 days after July 16, 2012, or upon the occurrence of certain other contingencies, the Company has agreed to file a shelf registration statement to cover resales of the Notes by holders who satisfy certain conditions relating to the provision of information in connection with the shelf registration statement. If the Company fails to comply with certain obligations under the Registration Rights Agreement, it will be required to pay liquidated damages in the form of additional cash interest to the holders of the Notes. A copy of the Registration Rights Agreement is attached as Exhibit 4.2 hereto and is incorporated herein by reference.

Also in connection with the sale of the Notes, the Company entered into an Indenture (the “Indenture”) on July 16, 2012 with the guarantors named therein and U.S. Bank National Association, as trustee (the “Trustee”), which is described in Item 2.03 below. The information in Item 2.03 of this report is incorporated herein by reference.

The net proceeds from the sale of the Notes were placed into escrow pursuant to an Escrow Agreement, dated July 16, 2012, among the Company, the Trustee, and U.S. Bank National Association, as Escrow and Paying Agent (the “Escrow Agreement”). Pursuant to the Escrow Agreement, the funds will either be (a) released from escrow upon satisfaction of the conditions to closing of the Company’s previously reported pending acquisition of GeoResources, Inc. (the “GeoResources Merger”) pursuant to the Agreement and Plan of Merger, dated April 24, 2012, among the Company, GeoResources, Inc., Leopard Sub I, Inc. and Leopard Sub II, LLC, as amended (the “GeoResources Merger Agreement”), or (b) redeemed by the Company, at a redemption price equal to 100% of the issue price plus accrued and unpaid interest on the outstanding principal amount, if the GeoResources Merger is not completed prior to December 31, 2012 or the GeoResources Merger Agreement is terminated earlier. A copy of the Escrow Agreement is attached as Exhibit 10.1 hereto and is incorporated herein by reference.

The Notes were issued pursuant to, and are governed by, the Indenture, which contains affirmative and negative covenants that, among other things, limit the ability of the Company and its subsidiaries that guarantee the Notes to incur indebtedness; pay dividends or make other distributions on stock; purchase or redeem stock or subordinated indebtedness; make investments; create liens; enter

into transactions with affiliates; sell assets; refinance certain indebtedness; and merge with or into other companies or transfer substantially all of their assets. The Indenture also contains customary events of default. Upon the occurrence of certain events of default, the Trustee or the holders of the Notes may declare all outstanding Notes to be due and payable immediately.

The Company will pay interest on the Notes on January 15 and July 15 of each year, beginning on January 15, 2013. The Notes will mature on July 15, 2020.

At any time prior to July 15, 2016, the Company may redeem the Notes, in whole or in part, at a redemption price equal to 100% of their principal amount plus a make-whole premium, together with accrued and unpaid interest, if any, to the redemption date. The Notes will be redeemable, in whole or in part, on or after July 15, 2016 at redemption prices equal to the principal amount multiplied by the percentage set forth below, plus accrued and unpaid interest:

Additionally, the Company may redeem up to 35% of the Notes on or prior to July 15, 2015 for a redemption price of 109.75% of the principal amount thereof, plus accrued and unpaid interest, utilizing net cash proceeds from certain equity offerings. In addition, upon a change of control of the Company, holders of the Notes will have the right to require the Company to repurchase all or any part of their Notes for cash at a price equal to 101% of the aggregate principal amount of the Notes repurchased, plus any accrued and unpaid interest.

The Notes are guaranteed on a senior unsecured basis by all of the Company’s existing wholly-owned subsidiaries and by any of the Company’s future restricted subsidiaries that guarantee its indebtedness under a credit facility. The Notes will be the Company’s general unsecured senior obligations and will rank equally in right of payment with the Company’s other unsecured senior indebtedness. The Notes will be effectively subordinate to all of the Company’s secured debt to the extent of the assets securing such debt.

A copy of the Indenture governing the Notes is attached hereto as Exhibit 4.1 and is incorporated herein by reference.

The offering of the Notes was conducted in accordance with the exemptions from the registration requirements of the Securities Act of 1933, as amended, afforded by Rule 144(A) and Regulation S under the Securities Act.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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