UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

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

Date of Report (Date of earliest event reported): February 12, 2018

WildHorse Resource Development Corporation

(Exact name of registrant as specified in its charter)

9805 Katy Freeway, Suite 400

Houston, TX 77024

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (713) 568-4910

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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

On February 12 , 2018, WildHorse Resource Development Corporation (the “Company”), through its wholly owned subsidiary, WildHorse Resources II, LLC, a Delaware limited liability company (“Seller”) entered into a Purchase and Sale Agreement (the “Purchase Agreement”) with Tanos Energy Holdings III, LLC ( “Buyer”). The Purchase Agreement provides for the sale by Seller of certain producing and non-producing oil and natural gas properties in Harrison, Milam, Panola, Robertson, and San Augustine Counties, Texas and Bienville, Bossier, Cado, Claiborne, De Soto, Jackson, Lincoln, Ouachita, Red River, Sabine, and Webster Parishes, Louisiana (the “NLA Disposition”). The consideration payable to Seller for the NLA Disposition will be approximately $217 million, in cash, subject to customary purchase price adjustments, including adjustments for certain title and environmental defects asserted prior to the closing. Additionally, the Company could receive contingent payments of up to $35 million based on the number of wells spud by Buyer on the acquired oil and gas properties over the next four years.

In connection with signing the Purchase Agreement, the Buyer deposited $21.7 million (the “Escrow Amount”) to Seller as a deposit to be applied against the purchase price at closing. The NLA Disposition has an effective date of January 1, 2018. The Purchase Agreement contains representations and warranties, covenants and indemnification provisions that are typical for transactions of this nature and that were made or agreed to, among other things, to provide the parties thereto with specified rights and obligations and to allocate risk among such parties. Accordingly, the Purchase Agreement should not be relied upon as constituting a description of the state of affairs of any of the parties thereto or their affiliates at the time it was entered into or otherwise. The NLA Disposition is subject to customary closing conditions and is expected to close in the first quarter of 2018, although there can be no assurance that all closing conditions will be satisfied.

The foregoing is qualified in its entirety by reference to the full text of the Purchase Agreement, which is filed as Exhibit 2.1 to this Current Report on Form 8-K and is incorporated herein by reference.

On February 12, 2018, the Company issued a press release announcing among other things, the NLA Disposition and an acquisition update. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

The information in Item 7.01 of this Current Report on Form 8-K, including the attached Exhibit 99.1, is being “furnished” pursuant to General Instruction B.2 of Form 8-K and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, and is not incorporated by reference into any Company filing, whether made before or after the date hereof, regardless of any general incorporation language in such filing.

This Current Report on Form 8-K contains certain “forward-looking statements.” All statements, other than statements of historical facts, included in this Current Report on Form 8-K that address activities, events or developments that the Company expects, believes or anticipates will or may occur in the future are forward-looking statements. These statements are based on certain assumptions made by the Company based on its experience and perception of historical trends, current conditions, expected future developments and other factors it believes are appropriate in the circumstances. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Company, which may cause the Company’s actual results to differ materially from those implied or expressed by the forward-looking statements. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

(d) Exhibits.

1

2

SIGNATURES

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

Dated: February 15, 2018

3