EX-99.1

Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 P.M. eastern time, on [ ], 2016. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form.

Use any touch-tone telephone to transmit your voting instructions up until 11:59 P.M. eastern time, on [ ], 2016. Have your proxy card in hand when you call and then follow the instructions.

Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

The Board of Directors recommends you

vote FOR proposals 1 and 2.

For

Against

Abstain

1 To approve the issuance of shares of Range Resources Corporation common stock, par value $0.01 per share, to Memorial Resource Development Corp. stockholders in connection with the merger contemplated by the Agreement and Plan of Merger, dated as of May 15, 2016, by and among Range Resources Corporation, Memorial Resource Development Corp. and Medina Merger Sub, Inc (the “Range Stock Issuance Proposal”).

2 To approve the adjournment of the Range Resources Corporation special meeting to a later date or dates, if necessary or appropriate, to solicit additional proxies in the event there are not sufficient votes at the time of the special meeting to approve the Range Stock Issuance Proposal.

For address change/comments, mark here.

(see reverse for instructions)

Yes

Please indicate if you plan to attend this meeting

Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name, by authorized officer.

Signature [PLEASE SIGN WITHIN BOX]

Date

Signature (Joint Owners)

Date

YOUR VOTE AND PARTICIPATION IN RANGE RESOURCES CORPORATION’S AFFAIRS ARE IMPORTANT. TO ENSURE THAT YOUR SHARES ARE REPRESENTED AT THE SPECIAL MEETING, PLEASE VOTE IN ONE OF THESE WAYS:

Important Notice Regarding the Availability of Proxy Materials for the Special Meeting: The Notice of Special Meeting and Joint Proxy Statement/Prospectus is/are available at www.proxyvote.com.

RANGE RESOURCES CORPORATION

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

SPECIAL MEETING OF STOCKHOLDERS

[ ], 2016

The undersigned hereby appoint(s) Jeffrey L. Ventura, David P. Poole and Roger S. Manny, and each of them, as proxies, each with the power to appoint his substitute, and hereby authorizes them to represent and vote, as designated on the reverse side of this proxy, all of the shares of Common Stock of Range Resources Corporation that the undersigned is entitled to vote at the special meeting of stockholders to be held at [ ] a.m., Central Daylight Time, on [ ], 2016, at The Worthington Hotel, [ ] Room, 200 Main Street, Fort Worth, Texas 76102, and any adjournment or postponement thereof.

THIS PROXY, WHEN PROPERLY EXECUTED, WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY THE UNDERSIGNED STOCKHOLDER. IF NO SPECIFIC DIRECTION IS GIVEN, THE PROXY WILL BE VOTED “FOR” EACH OF THE PROPOSALS SET FORTH ON THE REVERSE SIDE.

The proxies are authorized to vote in their discretion upon such other matters as may properly be brought before the special meeting of stockholders or any adjournment or postponement of it.

Address change/comments:

(If you noted any Address Changes and/or Comments above, please mark corresponding box on the reverse side.)

Continued and to be signed on reverse side