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Diamondback Energy, Inc. (FANG) (“Diamondback” or the “Company”) announced today the launch of an underwritten public offering of 2,000,000 shares of its common stock, subject to market and other conditions. The underwriter will have an option to purchase up to an additional 300,000 shares of common stock from Diamondback. All of the shares to be sold in this offering will be sold by Diamondback. The underwriter intends to offer the shares from time to time for sale in one or more transactions on the NASDAQ Global Select Market, in the over-the-counter market, through negotiated transactions or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or at negotiated prices.

Diamondback intends to use the net proceeds from this offering to repay a portion of the outstanding borrowings under its revolving credit facility.

Credit Suisse Securities (USA) LLC is acting as sole book-running manager for the offering. When available, copies of the written prospectus for the offering may be obtained from Credit Suisse Securities (USA) LLC, Prospectus Department (1-800-221-1037), at One Madison Avenue, New York, New York 10010.

The common stock will be issued and sold pursuant to an effective automatic shelf registration statement on Form S-3 previously filed with the Securities and Exchange Commission.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. This offering may only be made by means of a prospectus supplement and related base prospectus.

About Diamondback Energy, Inc.

Diamondback is an independent oil and natural gas company headquartered in Midland, Texas focused on the acquisition, development, exploration and exploitation of unconventional, onshore oil and natural gas reserves in the Permian Basin in West Texas. Diamondback’s activities are primarily focused on the horizontal exploitation of multiple intervals within the Wolfcamp, Spraberry, Clearfork and Cline formations.