Diamondback Energy Inc. (NASDAQ: FANG) opened a public offering of 2.5 million shares by selling stockholders, the company said Sept. 17.

The underwriter was given the option to purchase up to 375,000 additional shares from the selling stockholders, entities controlled by Wexford Capital LP and Gulfport Energy Corp. (NASDAQ: GPOR), Diamondback added. Both companies' entities offered about 1.3 million shares, the company noted.

The selling stockholders will receive all proceeds, Diamondback said.

Credit Suisse Securities (USA) LLC is the sole book-running manager, the company said.

Midland, Texas-based Diamondback Energy Inc. operates in the West Texas Permian Basin.