Grantee Acceptance. The Grantee shall signify acceptance of the terms and conditions of this Agreement and acknowledge receipt of a copy of the Plan by signing in the space provided below and returning the signed copy to the Company.

Acceptance by Grantee. The exercise of the Option or any portion thereof is conditioned upon acceptance by the Grantee of the terms and conditions of this Agreement, as evidenced by the Grantee's execution of [Schedule 1] and the delivery of an executed copy of [Schedule 1] to the Company.

Grantee Acknowledgment. Grantee represents that he or she has read this Agreement and is familiar with its terms and provisions. Grantee hereby agrees to accept as binding, conclusive, and final all decisions or interpretations of the Administrator of the Plan regarding any questions arising under this Agreement.

Acceptance. The Optionee hereby acknowledges receipt of a copy of the Plan and this Agreement. The Optionee has read and understands the terms and provisions thereof, and accepts the Option subject to all of the terms and conditions of the Plan and this Agreement. The Optionee acknowledges that there may be adverse tax consequences upon exercise of the Option or disposition of the underlying shares and that the Optionee should consult a tax advisor prior to such exercise or disposition.

Acceptance. If you decide to accept our offer, please sign the enclosed copy of this letter in the space indicated and return it to me. This offer will expire at ​ on ​. Before joining the Company you will be required to sign the Company’s Standard Agreement Regarding Inventions, Confidentiality and Non-competition. You will also be required to pass a standard background check. Your signature will acknowledge that you have read and understood and agreed to the terms and conditions of this offer letter and the attached documents, if any. Should you have anything else that you wish to discuss, please do not hesitate to call me.

Acceptance. This offer will remain open until August 27thh, 2015. If you decide to accept our offer, and I hope you will, please sign the enclosed copy of this letter in the space indicated and return it to me. Your signature will acknowledge that you have read and understood and agreed to the terms and conditions of this offer letter and the attached documents, if any. Should you have anything else that you wish to discuss, please do not hesitate to call me.

ACCEPTANCE. Receipt of this Warrant by the Holder shall constitute acceptance of and agreement to all of the terms and conditions contained herein.

Payment by Grantee. Each grantee shall, no later than the date as of which the value of an Award or of any Stock or other amounts received thereunder first becomes includable in the gross income of the grantee for Federal income tax purposes, pay to the Company, or make arrangements satisfactory to the Administrator regarding payment of, any Federal, state, or local taxes of any kind required by law to be withheld by the Company with respect to such income. The Company and its Subsidiaries shall, to the extent permitted by law, have the right to deduct any such taxes from any payment of any kind otherwise due to the grantee. The Company’s obligation to deliver evidence of book entry (or stock certificates) to any grantee is subject to and conditioned on tax withholding obligations being satisfied by the grantee.

Representations of Grantee. Grantee represents to Company as follows: # The Shares are being acquired for Grantee's own account, for investment purposes only and with no intent to distribute the Shares. (b) The Grantee is an "accredited investor" under Rule 501(a) of Regulation D under the Securities Act of 1933, as amended, and is sophisticated about the risks of an investment in the Shares and in the Company and oil and gas industry. (c) Grantee is the founder and senior operations executive of the Company. (d) Grantee is a U.S. Citizen and resident of the Commonwealth of Virginia. (e) Grantee has invested in securities prior to the Grant and understands the risks of equity investments, whether publicly traded or not. (f) Grantee has had full access to Company business and financial records and has received answers to any questions about the Company and its business and financial affairs from Company Chief Financial Officer and accountants. (g) The Grantee will cooperate in good faith and in a diligent manner with the Company in compliance with federal and state securities laws and regulations in respect to issuance of the Shares under this Agreement.

Rights of Grantee. Shares of Restricted Stock granted pursuant to an Award hereunder shall be issued in the name of the Grantee as soon as reasonably practicable after the Award is granted and the purchase price, if any, is paid by the Grantee; provided, that the Grantee has executed an Agreement evidencing the Award, an Escrow Agreement, appropriate blank stock powers and any other documents which the Committee, in its absolute discretion, may require as a condition to the issuance of such Shares. If a Grantee shall fail to execute the Agreement evidencing a Restricted Stock Award, an Escrow Agreement or appropriate blank stock powers or shall fail to pay the purchase price, if any, for the Restricted Stock, the Award shall be null and void. Shares issued in connection with a Restricted Stock Award, together with the stock powers, shall be deposited with the Escrow Agent. Except as restricted by the terms of the Agreement, upon the delivery of the Shares to the Escrow Agent, the Grantee shall have all of the rights of a shareholder with respect to such Shares, including the right to vote the shares and to receive, subject to [Section 8(d)], all dividends or other distributions paid or made with respect to the Shares.