Keane Group, Inc.(“Keane”) (NYSE:FRAC) today announced that one of its stockholders, Keane Investor Holdings LLC (the “Selling Stockholder”), commenced an underwritten secondary offering of 11,000,000 shares of Keane’s common stock. The Selling Stockholder also intends to grant the underwriters a 30-day option to purchase up to an additional 1,650,000 shares of Keane common stock.