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) December 5, 2016

Matador Resources Company

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (972) 371-5200

Not Applicable

(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:

Equity Underwriting Agreement

On December 5, 2016, Matador Resources Company (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Merrill Lynch, Pierce, Fenner & Smith Incorporated (“Merrill Lynch”), as representative of the several underwriters named therein (collectively, the “Underwriters”), providing for the issuance and sale in an underwritten public offering by the Company of 6,000,000 shares of its common stock at $24.36 per share (the “Equity Offering”). The Equity Offering closed on December 9, 2016.

The offer and sale of the shares of common stock were registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant to a shelf registration statement on Form S-3 (File No. 333-196178) (the “Registration Statement”), which became effective upon filing with the Securities and Exchange Commission (the “SEC”) on May 22, 2014.

In the Underwriting Agreement, the Company agreed to indemnify the Underwriters against certain liabilities, including liabilities under the Securities Act, and to contribute to payments the Underwriters may be required to make because of any of those liabilities.

Purchase Agreement

On April 14, 2015, the Company issued $400 million in aggregate principal amount of the Company’s 6.875% Senior Notes due 2023 (the “Initial Notes”). On December 6, 2016, the Company and certain of its subsidiaries (the “Guarantors”) entered into a purchase agreement (the “Purchase Agreement”) with Merrill Lynch, as representative of the several initial purchasers named therein (collectively, the “Initial Purchasers”), pursuant to which the Company agreed to issue and sell $175,000,000 in aggregate principal amount of the Company’s 6.875% Senior Notes due 2023 (the “Additional Notes” and, together with the Initial Notes, the “Notes”). The Initial Notes and the Additional Notes will be treated as a single class of debt securities. The Additional Notes offering closed on December 9, 2016.

The Purchase Agreement contains customary representations and warranties of the parties and indemnification and contribution provisions under which the Company and the Guarantors, on the one hand, and the Initial Purchasers, on the other, have agreed to indemnify each other against certain liabilities, including liabilities under the Securities Act. The Company also agreed not to offer or sell certain debt securities for a period of 60 days after December 6, 2016, without the prior consent of Merrill Lynch.

The Additional Notes were offered and sold in a transaction exempt from the registration requirements under the Securities Act. The initial purchasers intend to resell the Additional Notes to qualified institutional buyers in reliance on Rule 144A under the Securities Act and to non-U.S. persons in reliance on Regulation S. The Additional Notes have not been registered under the Securities Act or applicable state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements of the Securities Act and applicable state laws.

The Company intends to use the net proceeds from the Equity Offering and Additional Notes offering to fund the aggregate purchase price for approximately 4,600 net leasehold acres and estimated current net production of approximately 1,150 barrels of oil equivalent per day from wells producing on this acreage in Eddy and Lea Counties, New Mexico as well as approximately 475 net mineral acres in Eddy and Lea Counties, New Mexico, to fund the capital expenditures for a number of midstream initiatives in the Delaware Basin that are either in progress or that the Company expects to begin by the end of the first quarter of 2017, to repay outstanding borrowings under its revolving credit facility and for general corporate purposes, including capital expenditures associated with the addition of a fourth drilling rig.

Indenture

On April 14, 2015, the Company entered into an Indenture (the “Indenture”) among the Company, the Guarantors and Wells Fargo Bank, National Association, as trustee, governing the terms of the Notes.

Interest and Maturity

The Notes will mature on April 15, 2023, and interest is payable on the Notes semiannually in arrears on each April 15 and October 15, and the first interest payment date for the Additional Notes will be April 15, 2017. The Notes are guaranteed on a senior unsecured basis by the Guarantors.

Optional Redemption

At any time prior to April 15, 2018, the Company may redeem up to 35% in aggregate principal amount of Notes at a redemption price of 106.875% of the principal amount thereof, plus accrued and unpaid interest to the redemption date, in an amount not greater than the net proceeds of certain equity offerings so long as the redemption occurs within 180 days of completing such equity offering and at least 65% of the aggregate principal amount of the Notes remains outstanding after such redemption.

In addition, at any time prior to April 15, 2018, the Company may redeem all or part of the Notes for cash at a redemption price equal to 100% of their principal amount plus an applicable make-whole premium and accrued and unpaid interest, plus accrued and unpaid interest to the redemption date. On and after April 15, 2018, the Company may redeem all or a part of the Notes at redemption prices (expressed as percentages of principal amount) equal to (i) 105.156% for the twelve-month period beginning on April 15, 2018; (ii) 103.438% for the twelve-month period beginning on April 15, 2019; (iii) 101.719% for the twelve-month period beginning on April 15, 2020; and (iv) 100.000% on April 15, 2021 and at any time thereafter, plus accrued and unpaid interest to the applicable redemption date.

Change of Control

Upon the occurrence of a Change of Control (as defined in the Indenture), unless the Company has exercised its optional redemption right in respect of the Notes, the holders of the Notes will have the right to require the Company to repurchase all or a portion of the Notes at a price equal to 101% of the aggregate principal amount of the Notes, plus any accrued and unpaid interest to the date of purchase.

Certain Covenants

The Indenture restricts the Company’s ability and the ability of certain of its subsidiaries to: (i) incur or guarantee additional debt or issue certain types of preferred stock; (ii) pay dividends on capital stock or redeem, repurchase or retire its capital stock or subordinated indebtedness; (iii) transfer or sell assets; (iv) make certain investments; (v) create certain liens; (vi) enter into agreements that restrict dividends or other payments from its restricted subsidiaries to the Company; (vii) consolidate, merge or transfer all or substantially all of its assets; (viii) enter into transactions with affiliates; and (ix) create unrestricted subsidiaries. These covenants are subject to a number of important exceptions and qualifications. At any time when the Notes are rated investment grade by both Moody’s Investors Service, Inc. and Standard & Poor’s Ratings Services, many of these covenants will terminate.

Events of Default

The Indenture provides that each of the following is an Event of Default:

Registration Rights Agreement

On December 9, 2016, in connection with the issuance and sale of the Additional Notes, the Company, the Guarantors and Merrill Lynch entered into a registration rights agreement (the “Registration Rights Agreement”). Under the Registration Rights Agreement, the Company and the Guarantors have agreed to file a registration statement with the SEC with respect to an offer to exchange the Additional Notes for substantially identical notes that are registered under the Securities Act. Under some circumstances, in lieu of, or in addition to, a registered exchange offer, the Company and the Guarantors have agreed to file a shelf registration statement with respect to the Additional Notes. The Company and the Guarantors are required to pay additional interest on the Additional Notes if they fail to comply with their obligations to consummate the offer to exchange within 365 days of December 9, 2016.

Credit Agreement Amendment

On September 28, 2012, the Company, as a guarantor, and MRC Energy Company, its wholly-owned subsidiary, as borrower, entered into an amended and restated senior secured revolving credit agreement (the “Revolving Credit Agreement”). For a summary of key terms of the Revolving Credit Agreement, see the Company’s Annual Report on Form 10-K for the year ended December 31, 2015 filed with the SEC on February 29, 2016, which description is incorporated herein by reference. On December 9, 2016, MRC Energy Company, as borrower, entered into an amendment (the “Credit Agreement Amendment”) to the Revolving Credit Agreement (as amended, the “Credit Agreement”) and the Company reaffirmed its guaranty of MRC Energy Company’s obligations under the Credit Agreement. The Credit Agreement Amendment amends the Credit Agreement to allow for the issuance of the Additional Notes.

The foregoing descriptions are qualified in their entirety by reference to the full text of the Underwriting Agreement, Purchase Agreement, Indenture, Registration Rights Agreement and Credit Agreement Amendment, which are filed as Exhibits 1.1, 10.1, 4.1, 4.2 and 10.2, respectively, to this Current Report on Form 8-K (this “Current Report”) and incorporated herein by reference.

The information included, or incorporated by reference, in Item 1.01 of this Current Report is incorporated by reference into this Item 2.03 of this Current Report.

On December 6, 2016, the Company issued a press release announcing the pricing of the Additional Notes. On December 9, 2016, the Company issued a press release announcing the closing of the offering of the Additional Notes. In addition, on December 9, 2016, the Company issued a press release announcing the closing of the Equity Offering. A copy of such press releases are furnished as Exhibits 99.1, 99.2 and 99.3, respectively, to this Current Report.

The information furnished pursuant to this Item 7.01, including Exhibits 99.1, 99.2 and 99.3, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and will not be incorporated by reference into any filing under the Securities Act, unless specifically identified therein as being incorporated therein by reference.

In connection with the Equity Offering, the Company is filing the opinion of Baker Botts L.L.P. as part of this Current Report that is to be incorporated by reference into the Registration Statement. The opinion of Baker Botts L.L.P. is filed as Exhibit 5.1 to this Current Report and incorporated herein by reference.

(d) Exhibits

SIGNATURE

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.

Exhibit Index