SUMMARY

The following summary highlights some of the information contained in this joint proxy statement/prospectus. This summary may not contain all of the information that is important to you. For a more complete description of the merger agreement, the merger and the other transactions contemplated thereby, Halcón and GeoResources encourage you to read carefully this entire joint proxy statement/prospectus, including the attached Annexes. In addition, Halcón and GeoResources encourage you to read the information incorporated by reference into this joint proxy statement/prospectus, which includes important business and financial information about Halcón and GeoResources that has been filed with the SEC. You may obtain the information incorporated by reference into this joint proxy statement/prospectus without charge by following the instructions in the section entitled “Where You Can Find More Information.” We have defined certain oil and gas industry terms used in this document in the “Glossary of Oil and Gas Terms” beginning on page 155.

The Companies

(Pages 39 to 42)

Halcón Resources Corporation

1000 Louisiana St., Suite 6700

Houston, Texas 77002

(832) 538-0300

Halcón is an independent energy company engaged in the acquisition, exploration, development and production of onshore oil and natural gas properties in the United States. Halcón’s producing properties are principally located in Texas, Oklahoma and Louisiana. In February 2012, HALRES LLC, which we refer to as HALRES, a newly formed company led by Floyd C. Wilson, former Chairman and Chief Executive Officer of Petrohawk Energy Corporation, recapitalized Halcón with a $550 million investment, Mr. Wilson was appointed Chairman, President and Chief Executive Officer of Halcón and a new board of directors was appointed in connection with the recapitalization transaction. The objective of Halcón’s new management team is to increase stockholder value by growing Halcón’s oil and natural gas reserves, production and cash flow. Halcón intends to accomplish this objective by acquiring strategic acreage positions in liquids-rich regions, leveraging the latest available technologies and the expertise of Halcón’s management team to explore and develop core properties, actively managing Halcón’s portfolio of properties, and maintaining financial flexibility to fund potential acquisitions, exploration and development drilling and other corporate opportunities.

Leopard Sub I, Inc.

Leopard Sub II, LLC

1000 Louisiana St., Suite 6700

Houston, Texas 77002

(832) 538-0300

Leopard Sub I, Inc., which we refer to as Merger Sub, is a Colorado corporation and a direct wholly owned subsidiary of Halcón and was formed solely for the purpose of consummating the merger. Leopard Sub II, LLC, which we refer to as the Second Merger Sub, is a Delaware limited liability company and a direct wholly owned subsidiary of Halcón and was formed solely for the purpose of consummating the subsequent merger. Neither Leopard Sub I, Inc. nor Leopard Sub II, LLC has carried on any activities to date, except for activities incidental to formation and activities undertaken in connection with the merger.

GeoResources, Inc.

110 Cypress Station Drive, Suite 220

Houston, Texas 77090

(281) 537-9920

GeoResources, Inc. is an independent oil and gas company engaged in the acquisition and development of oil and natural gas reserves through an active and diversified program which includes the acquisition, drilling and development of undeveloped leases, purchases of reserves and exploration activities. GeoResources’ recent focus has been on expanding and developing its oil-weighted resource acreage in the Bakken trend of the Williston Basin and in the Austin Chalk and Eagle Ford trends in Texas.

The Merger

(Pages 51 to 97)

The Structure of the Merger

Halcón has agreed to acquire GeoResources under the terms and conditions set forth in the merger agreement, which we describe in this joint proxy statement/prospectus. Pursuant to the merger agreement, Merger Sub will merge with and into GeoResources, with GeoResources continuing as the surviving corporation and a wholly owned subsidiary of Halcón. We refer to this as the merger. Promptly following the completion of the merger, GeoResources as the surviving corporation from the merger will merge with and into the Second Merger Sub, with the Second Merger Sub surviving the second merger. We refer to this as the subsequent merger. The subsequent merger, pursuant to a binding commitment, will be effected shortly after the effective time of the merger, which we refer to as the effective time, without further approval, authorization or direction from or by any of the parties to the merger agreement. We have attached the merger agreement as Annex A to this joint proxy statement/prospectus. We encourage you to carefully read the merger agreement in its entirety. We currently expect that the merger and subsequent merger will be completed during the third quarter of 2012. However, we cannot predict the actual timing of the completion of the merger and subsequent merger.

Merger Consideration

The merger agreement provides that at the effective time of the merger each share of GeoResources common stock issued and outstanding immediately prior to the effective time will be converted into the right to receive cash of $20.00 per share and 1.932 shares of Halcón common stock. In the merger, Halcón anticipates that it will pay approximately $532 million in cash and issue approximately 51 million shares of common stock based on the outstanding shares of GeoResources common stock at the effective time of the merger. No assurance can be given that the current fair market value of Halcón common stock will be equivalent to the fair market value of Halcón common stock on the date that the merger consideration is received by a GeoResources stockholder or at any other time. The actual fair market value of the Halcón common stock received by GeoResources stockholders depends upon the fair market value of Halcón common stock upon receipt, which may be higher or lower than the market price of Halcón common stock on the date the merger was announced, on the date that this document is mailed to GeoResources’ stockholders, or on the date of the special meeting of GeoResources stockholders.

Treatment of GeoResources Stock Options, Warrants and Restricted Stock Units

Each option to purchase shares of GeoResources common stock granted under the GeoResources Amended and Restated 2004 Employees’ Stock Incentive Plan, which we refer to as the GeoResources Stock Plan, that is outstanding and unexercised immediately prior to the effective time of the merger will become fully vested immediately prior to the effective time of the merger. Each option has been conditionally exercised by the holder of the option in accordance with the GeoResources Stock Plan on a “net cashless” basis and will be converted into the right to receive the merger consideration.

Each restricted stock unit which was issued pursuant to the GeoResources Stock Plan and is outstanding immediately prior to the effective time, and that has not then vested and been settled, shall vest and be settled by GeoResources through the issuance to each holder thereof of one share of GeoResources common stock in respect of each such restricted stock unit (subject to any applicable withholding). Each share of GeoResources common stock issued with respect to such former restricted stock unit shall be converted into the right to receive the merger consideration.

Each warrant to purchase shares of GeoResources common stock that is outstanding and unexercised immediately prior to the effective time of the merger, whether vested or unvested, will, in connection with the merger, be assumed by Halcón and be converted into a warrant to acquire Halcón common stock and cash. For more information about the treatment of the GeoResources warrants, see “The Merger – Treatment of GeoResources Warrants.”

Ownership of Halcón After the Merger

Halcón will issue approximately 51 million shares of Halcón common stock to former GeoResources stockholders pursuant to the merger. Immediately following the completion of the merger, Halcón expects to have approximately 195 million shares of common stock outstanding. GeoResources stockholders are therefore expected to hold approximately 26% of the combined company’s common stock outstanding immediately after the merger. Additionally, if the probable acquisition of the East Texas Assets closes, Halcón will issue approximately 20.7 million shares of Halcón common stock to former owners of the East Texas Assets. Halcón expects to have approximately 216 million shares of Halcón common stock outstanding following the completion of the merger and assuming the acquisition of the East Texas Assets and GeoResources stockholders would therefore be expected to hold approximately 24% of the combined company’s outstanding common stock. Consequently, GeoResources stockholders, as a general matter, will have less influence over the management and policies of Halcón than they currently exercise over the management and policies of GeoResources.

Directors and Executive Officers of Halcón After the Merger

The directors and executive officers of Halcón prior to the merger will continue to serve as directors and executive officers of Halcón after the merger. Mr. Robert J. Anderson, GeoResources’ Chief Operating Officer (Northern Division), Executive Vice President — Engineering and Acquisitions and a director of GeoResources, is expected to be appointed as Halcón’s Executive Vice President and Chief Operating Officer after the effective time of the merger. Halcón has agreed to take all necessary action to cause, at the effective time of the merger, the number of directors on the Halcón board of directors to be increased from 10 to 11 and one individual, as mutually agreed by Halcón and GeoResources, to be elected to the Halcón board of directors as a Class A director in connection with the consummation of the merger. Subsequent to the signing of the merger agreement, Halcón and GeoResources agreed upon Michael A. Vlasic as the additional Class A director to be elected to the Halcón board of directors. In the event that the merger is not completed, the foregoing director election will not take effect.

Effective Time and Completion of the Merger

Halcón and GeoResources hope to complete the merger as soon as reasonably practicable and expect the closing of the merger and the subsequent merger to occur in the third quarter of 2012. However, the merger is subject to regulatory clearances and the satisfaction or waiver of other conditions, and it is possible that factors outside the control of Halcón and GeoResources could result in the merger being completed at an earlier time, a later time or not at all. If the merger has not been completed on or before December 31, 2012, either Halcón or GeoResources may terminate the merger agreement unless the failure to complete the merger by that date is due to the failure of the party seeking to terminate the merger agreement to fulfill any material obligations under the merger agreement or a material breach of the merger agreement by such party.

Completion of the Merger is Subject to Certain Conditions

A number of conditions must be satisfied or waived, where legally permissible, before the merger can be consummated. These include, among others:

Neither Halcón nor GeoResources can give any assurance as to when or if all of the conditions to the consummation of the merger will be satisfied or waived or that the merger will occur.

Termination of the Merger Agreement; Fees Payable

In general, the merger agreement may be terminated at any time prior to the effective time of the merger in the following ways, subject to certain exceptions discussed in “The Merger Agreement – Termination of the Merger Agreement”:

For more information regarding the rights of Halcón and GeoResources to terminate the merger agreement, see “The Merger Agreement – Termination of the Merger Agreement – General” beginning on page 110.

Except for the termination fee set forth in the merger agreement and as described below, all costs and expenses incurred in connection with the merger agreement and the transactions contemplated therein shall be paid by the party incurring such costs or expenses. Under the merger agreement, GeoResources may be required to pay to Halcón a termination fee of approximately $27.8 million if the merger agreement is terminated under certain circumstances.

In addition, in the event of a termination resulting from a breach of a party’s representations and warranties or covenants in the merger agreement, or if a party’s stockholders fail to approve the transactions contemplated by the merger agreement, such party must reimburse the other party for its fees and expenses incurred in connection with the merger agreement in an amount not to exceed $10 million.

For more information regarding termination fees, see “The Merger Agreement – Termination of the Merger Agreement – Termination Fees” beginning on page 111.

We May Amend the Terms of the Merger and Waive Rights Under the Merger Agreement

Subject to compliance with applicable law, Halcón and GeoResources may amend the merger agreement at any time before or after approval and adoption of the merger agreement by GeoResources stockholders. However, after such approval and adoption there may not be, without further approval of GeoResources stockholders, any amendment of the merger agreement that alters or changes, in a way that adversely affects the holders of any shares of GeoResources capital stock or alters or changes the merger consideration to be received by the GeoResources stockholders in the merger.

At any time prior to the effective time of the merger, Halcón and GeoResources may, to the extent legally allowed:

Any such waiver or extension is subject to the certain conditions. See “The Merger Agreement – Extension, Waiver and Amendment of the Merger Agreement.”

Regulatory Filings and Approvals Required to Complete the Merger

We are not aware of any material governmental or regulatory approvals required for the completion of the merger and compliance with the applicable corporate law of the States of Colorado and Delaware.

The Special Meetings and Voting

(Pages 43 to 50)

Halcón Special Meeting of Stockholders

The special meeting of the stockholders of Halcón will be for the following purposes:

The Halcón board of directors has fixed the close of business on June 18, 2012 as the record date for determining the holders of shares of Halcón common stock entitled to receive notice of and to vote at the Halcón special meeting and any adjournments or postponements thereof. Each holder of shares of Halcón common stock outstanding on the record date will be entitled to one vote for each share held of record upon each matter properly submitted at the Halcón special meeting and at any adjournment or postponement thereof. In order for Halcón to satisfy its quorum requirements, the holders of at least a majority of the total number of outstanding shares of Halcón common stock entitled to vote at the meeting must be present.

The issuance of shares of Halcón common stock in the merger requires the affirmative vote of a majority of the votes cast in person or by proxy and entitled to vote at the Halcón special meeting. The election of the Class A director requires the affirmative vote of a plurality of votes cast in person or by proxy and entitled to vote at the Halcón special meeting. Approval of the proposal to authorize Halcón’s board of directors to adjourn the special meeting requires the affirmative vote of a majority of the stock present in person or by proxy and entitled to vote at the Halcón special meeting.

GeoResources Special Meeting of Stockholders

The special meeting of the stockholders of GeoResources will be for the following purposes:

The GeoResources board of directors has fixed the close of business on June 18, 2012 as the record date for determining the holders of shares of GeoResources common stock entitled to receive notice of and to vote at the GeoResources special meeting and any adjournments or postponements thereof. Each holder of shares of GeoResources common stock outstanding on the record date will be entitled to one vote for each share held of record upon each matter properly submitted at the GeoResources special meeting and at any adjournment or postponement thereof. In order for GeoResources to satisfy its quorum requirements, the holders of at least a majority of the total number of outstanding shares of GeoResources common stock entitled to vote at the meeting must be present.

The approval of the merger agreement requires the affirmative vote of the holders of at least a majority of the shares of GeoResources common stock issued and outstanding and entitled to vote at the GeoResources special meeting. The affirmative vote of a majority of the votes cast by holders of GeoResources common stock at the GeoResources special meeting is required to approve (i) on a nonbinding, advisory basis, the compensation that may be paid or become payable to GeoResources’ named executive officers that is based on or otherwise relates to the merger and (ii) the proposal to adjourn the GeoResources special meeting, if necessary or appropriate, to solicit additional proxies if there are insufficient votes at the time of the GeoResources special meeting to approve and adopt the merger agreement.

Voting Agreements

GeoResources has entered into a voting agreement with HALRES, which owns approximately 51% of the outstanding shares of Halcón common stock as of the record date of the Halcón special meeting of stockholders. The HALRES voting agreement provides, among other things, that HALRES will vote in favor of the transactions contemplated by the merger agreement, including the issuance of shares of Halcón common stock in connection with the merger and the election of one additional Class A director to the Halcón board of directors. HALRES also agreed not to sell, transfer or otherwise dispose of its shares of Halcón common stock, subject to certain exceptions provided in the voting agreement.

Certain of GeoResources’ officers and directors (and certain of their affiliates) who own in the aggregate approximately 17% of the outstanding shares of GeoResources common stock as of the record date of the GeoResources special meeting of stockholders entered into a voting agreement with Halcón and Merger Sub, in which each stockholder agreed to vote in favor of the merger, against any acquisition proposal other than contemplated by the merger agreement, and against any proposal, action or transaction that would impede, frustrate, prevent or nullify the merger or the other transactions contemplated by the merger agreement. Each stockholder also agreed not to sell, transfer or otherwise dispose of that stockholder’s shares of GeoResources common stock, subject to certain exceptions provided in the voting agreement. Additionally, each stockholder agreed to similar non-solicitation provisions as those applicable to GeoResources under the merger agreement.

For more information regarding these voting arrangements, see “Voting Agreements” on page 115.

Matters to be Considered in Deciding How to Vote

(Pages 43 and 47)

Recommendation of the Halcón Board of Directors and Its Reasons for the Merger

After careful consideration, the Halcón board of directors approved the merger agreement on April 24, 2012. The Halcón board of directors recommends that Halcón stockholders vote “FOR” the proposal to approve the issuance of shares of Halcón common stock pursuant to the merger agreement, “FOR” the proposal to elect, conditioned upon closing of the merger, Michael A. Vlasic as an additional Class A director to the Halcón board of directors, and “FOR” the proposal to authorize Halcón’s board of directors to adjourn the special meeting.

For the factors considered by the Halcón board of directors in reaching its decision to approve the merger agreement as well as the Halcón board of directors’ reasons for, and certain risks related to, the merger, see “The Merger—Recommendation of Halcón’s Board of Directors and Reasons for the Merger” beginning on page 61.

Recommendation of the GeoResources Board of Directors and Its Reasons for the Merger

After careful consideration, on April 23, 2012, the GeoResources board of directors unanimously (i) determined that the merger is fair to and in the best interests of GeoResources and its stockholders, (ii) declared the merger agreement and the transactions contemplated thereby advisable, and (iii) approved the merger and the merger agreement (and the forms of exhibits thereto) and the transactions contemplated thereby. The GeoResources board of directors unanimously recommends that GeoResources stockholders vote “FOR” the proposal to approve and adopt the merger agreement and the transactions contemplated by the merger agreement, “FOR” the proposal to approve, on a non-binding, advisory basis, the compensation that may be paid or become payable to GeoResources’ named executive officers that is based on or otherwise relates to the merger, and “FOR” the adjournment proposal.

For the factors considered by the GeoResources board of directors in reaching its decision to approve the merger agreement and approve the consummation of the transactions contemplated by the merger agreement, including the merger, as well as the GeoResources board of directors’ reasons for, and certain risks related to, the merger, see “The Merger—Recommendation of GeoResources’ Board of Directors and Reasons for the Merger” beginning on page 63.

Fairness Opinion of Barclays to the Halcón Board of Directors

Barclays Capital Inc., or Barclays, rendered its opinion to Halcón’s board of directors that, as of April 24, 2012, based upon and subject to the qualifications, limitations and assumptions stated in its opinion, the merger consideration to be paid by Halcón in the merger was fair, from a financial point of view, to Halcón.

The full text of the written opinion of Barclays, dated April 24, 2012, which sets forth assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with the opinion, is attached as Annex D to this joint proxy statement/prospectus. Barclays provided its opinion for the information and assistance of Halcón’s board of directors in connection with its consideration of the merger. The Barclays opinion is not a recommendation as to how any holder of Halcón’s common stock should vote with respect to the issuance of Halcón common stock in the merger or any other matter.

Pursuant to a letter agreement dated February 7, 2012, Halcón engaged Barclays to act as its financial advisor in connection with the contemplated transaction. As compensation for its services in connection with the

merger, Halcón paid Barclays $1.0 million upon the delivery of Barclays’ fairness opinion. Additional compensation of $6.0 million will be payable on completion of the merger, against which the amount paid for the opinion will be credited. In addition, Halcón has agreed to reimburse Barclays for its expenses, including attorneys’ fees and disbursements, and to indemnify Barclays and related persons against various liabilities.

Fairness Opinion of Wells Fargo Securities to the GeoResources Board of Directors

On April 23, 2012, at a meeting of the GeoResources board of directors held to consider the merger agreement, Wells Fargo Securities, LLC, referred to as Wells Fargo Securities, delivered an opinion to the board of directors of GeoResources, which was confirmed by delivery of a written opinion, dated April 24, 2012, that, as of the date of the written opinion, and based on and subject to various assumptions made, procedures followed, matters considered and limitations on the review undertaken by Wells Fargo Securities in connection with the opinion, the experience of its investment bankers and other factors it deemed relevant, the merger consideration of (1) $20.00 cash, without interest, and (2) 1.932 shares of Halcón common stock per share to be received by the holders of GeoResources common stock pursuant to the merger agreement was fair, from a financial point of view, to such holders (other than Halcón and its affiliates). The full text of the written opinion of Wells Fargo Securities, dated April 24, 2012, which sets forth the assumptions made, procedures followed, matters considered and limitations on the review undertaken in connection with the opinion, is attached as Annex E to this joint proxy statement/prospectus. Wells Fargo Securities provided its opinion for the information and use of the board of directors of GeoResources in connection with its evaluation of the merger. The Wells Fargo Securities opinion does not constitute a recommendation as to how any holder of shares of GeoResources common stock should vote with respect to the merger or any other matter.

Pursuant to an engagement letter between GeoResources and Wells Fargo Securities, GeoResources engaged Wells Fargo Securities to act as its financial advisor and render a fairness opinion in connection with the merger and agreed to pay Wells Fargo Securities an aggregate fee for such services of approximately $5.5 million, $2.5 million of which was payable upon delivery of Wells Fargo Securities’ opinion and approximately $3.0 million of which will be payable upon consummation of the merger. In addition, GeoResources has agreed to reimburse Wells Fargo Securities for its expenses, including attorneys’ fees and disbursements, and to indemnify Wells Fargo Securities and related persons against various liabilities. We encourage you to read the opinion, which is attached to this joint proxy statement/prospectus as Annex E, in its entirety and the description thereof in the section titled “The Merger – Opinion of Wells Fargo Securities to the GeoResources Board of Directors” beginning on page 75.

The Merger Generally Will Be Tax-Free to U.S. Holders of GeoResources Common Stock to the Extent They Receive Halcón Common Stock

Based on the opinions of Jones & Keller, P.C., outside counsel to GeoResources, and Thompson & Knight LLP, outside counsel to Halcón, we expect that the material U.S. federal income tax consequences of the merger and the subsequent merger, on a combined basis, to GeoResources stockholders that are U.S. persons will be as follows:

Please refer to “Material U.S. Federal Income Tax Consequences” beginning on page 117 of this document for a more complete discussion of the U.S. federal income tax consequences of the merger. Determining the actual tax consequences of the merger to you may be complex and will depend on your specific situation. You should consult your tax advisor for a full understanding of the merger’s tax consequences for you.

Interests of GeoResources Directors and Executive Officers in the Merger

In considering the recommendation of GeoResources’ board of directors with respect to the merger, GeoResources stockholders should be aware that the executive officers and directors of GeoResources have certain interests in the merger that may be different from, or in addition to, the interests of GeoResources stockholders. GeoResources’ board of directors was aware of these interests and considered them, among other matters, when adopting a resolution to approve and adopt the merger agreement and recommending that GeoResources stockholders vote to approve and adopt the merger agreement. Upon consummation of the merger, and assuming each executive officer experiences a termination immediately thereafter that entitles him to the highest amount of additional merger-related compensation payable, GeoResources’ non-employee directors and named executive officers will receive accelerated equity awards and change-in-control payments with an aggregate estimated value of approximately $10.8 million. See “The Merger – Interests of GeoResources’ Directors and Executive Officers in the Merger” beginning on page 88.

Comparative Per Share Market Price and Dividend Information

The following table shows the closing sale prices of Halcón and GeoResources common stock as reported on the New York Stock Exchange, or NYSE, and the NASDAQ Global Select Market, respectively, on April 24, 2012, the last business day preceding the press release announcing the merger agreement, and on June 19, 2012, the last practicable day before the distribution of this joint proxy statement/prospectus. This table also shows the merger consideration equivalent proposed for each share of GeoResources common stock, which we calculated by multiplying the closing price of Halcón common stock on those dates by the exchange ratio of 1.932 and adding the cash consideration of $20.00.

Because the 1.932 exchange ratio is fixed and will not be adjusted as a result of changes in the market price of Halcón common stock, the merger consideration equivalent will fluctuate with the market price of Halcón common stock. The merger agreement does not include a price-based termination right or provisions that would limit the impact of increases or decreases in the market price of Halcón common stock. You should obtain current market quotations for the shares of both companies from a newspaper, the Internet or your broker prior to voting on the merger agreement.

Neither Halcón nor GeoResources paid dividends on its common stock during the past three years and neither company has any current intention of doing so in the foreseeable future.

Appraisal Rights

GeoResources stockholders have the right to dissent from the proposed merger and, subject to certain conditions provided for in Article 113 of the CBCA, are entitled to receive payment of the fair value of their GeoResources common stock. GeoResources stockholders will be bound by the terms of the merger unless they dissent by complying with all of the requirements of the Colorado dissenters’ rights statutes. See “The Merger – Appraisal Rights” beginning on page 94 for a summary of dissenters’ rights available to GeoResources

stockholders, which summary is not intended to be a complete statement of applicable Colorado law and is qualified in its entirety by reference to Article 113 of the CBCA, which is set forth in its entirety as Annex F to this joint proxy statement/prospectus.

Comparison of the Rights of Stockholders

As a result of the merger, the holders of GeoResources securities that receive shares of Halcón common stock will become stockholders of Halcón. Following the merger, these GeoResources stockholders will have different rights as stockholders of Halcón than as stockholders of GeoResources due to the different laws governing each company’s jurisdiction of incorporation as well as provisions of the governing documents of Halcón and GeoResources. These differences are described in more detail under “Comparison of Rights of Halcón Stockholders and GeoResources Stockholders” beginning on page 142.

Selected Consolidated Historical Financial Data of Halcón

Set forth below are selected data derived from Halcón’s unaudited consolidated financial statements as of and for the quarters ended March 31, 2012 and 2011, and Halcón’s audited consolidated financial statements for the years ended December 31, 2007 through 2011. This information should be read together with Halcón’s consolidated financial statements and related notes included in Halcón’s quarterly report on Form 10-Q for the quarter ended March 31, 2012 and Annual Report on Form 10-K for the year ended December 31, 2011, and the accompanying notes and management’s discussion and analysis of operations and financial condition of Halcón contained in such reports, which reports are incorporated by reference in this joint proxy statement/prospectus. The historical consolidated financial data as of December 31, 2009, 2008 and 2007 and for the two years ended December 31, 2008 are derived from Halcón’s audited financial statements that are not included or incorporated by reference herein.

Selected Consolidated Historical Financial Data of GeoResources

Set forth below are selected data derived from GeoResources’ unaudited consolidated financial statements as of and for the quarters ended March 31, 2012 and 2011, and GeoResources’ audited consolidated financial statements for the years ended December 31, 2007 through 2011. This information should be read together with GeoResources’ consolidated financial statements and related notes included in GeoResources’ quarterly report on Form 10-Q for the quarter ended March 31, 2012 and Annual Report on Form 10-K, as amended, for the year ended December 31, 2011, and the accompanying notes and management’s discussion and analysis of operations and financial condition of GeoResources contained in such reports, which reports are incorporated by reference in this joint proxy statement/prospectus. The historical consolidated financial data as of December 31, 2009, 2008 and 2007 and for the two years ended December 31, 2008 are derived from GeoResources’ audited financial statements that are not included or incorporated by reference herein.