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): June 2, 2015 (May 29, 2015)

MEMORIAL RESOURCE DEVELOPMENT CORP.

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code: (713) 588-8300

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:

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On May 29, 2015, the Board of Directors of Memorial Resource Development Corp. (the “Company”) approved the grant of restricted shares (the “Restricted Shares”) pursuant to the Company’s 2014 Long-Term Incentive Plan to certain executive officers of the Company as indicated in the following table:

On May 29, 2015, the Board of Directors of Memorial Production Partners GP LLC (“MEMP GP”), the general partner of Memorial Production Partners LP (the “Partnership”), approved a grant of restricted common units representing limited partner interests in the Partnership (the “Restricted Units”) pursuant to the Partnership’s Long-Term Incentive Plan to certain executive officers of the Partnership’s general partner and employees as indicated in the following table:

The grant of the Restricted Shares to certain executive officers of the Partnership’s general partner and employees were made pursuant to a Restricted Stock Agreement, a form of which was previously filed with the Company’s Registration Statement on Form S-8, filed with the Securities and Exchange Commission (the “Commission”) on June 18, 2014 (the “Form S-8”), and will vest pro-rata over a three year period. The terms of the Restricted Stock Agreement are substantially the same as the terms set forth in the form of such agreement previously filed as Exhibit 4.6 to the Form S-8. The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Form of Restricted Stock Agreement. A copy of the Form of Restricted Stock Agreement is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated in this Item 5.02 by reference.

The grant of the Restricted Units to the executive officers were made pursuant to a Restricted Unit Agreement, a form of which was previously filed with the Partnership’s Registration Statement on Form S-8, filed with the Commission on December 14, 2011 (the “Partnership Form S-8”), and will vest pro-rata over a three year period. The terms of the Restricted Unit Agreement are substantially the same as the terms set forth in the form of such agreement previously filed as Exhibit 4.6 to the Partnership Form S-8. The foregoing description is not complete and is qualified in its entirety by reference to the full text of the Form of Restricted Unit Agreement. A copy of the Form of Restricted Unit Agreement is filed as Exhibit 10.2 to this Current Report on Form 8-K and is incorporated in this Item 5.02 by reference.

(d) Exhibits.

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.

EXHIBIT INDEX