Keane Group, Inc. ("Keane" or the "Company") announced today the commencement of its initial public offering of 15,300,000 shares of its common stock, at an anticipated initial public offering price between $17.00 and $19.00 per share, pursuant to a registration statement on Form S-1 previously filed with the U.S. Securities and Exchange Commission (the "SEC"). The selling stockholder named in the registration statement is selling 1,400,000 shares of the Company's common stock in the offering. The selling stockholder also expects to grant the underwriters a 30-day over-allotment option to purchase an additional 2,505,000 shares of the Company's common stock. The Company has been approved to list its common stock on the New York Stock Exchange (NYSE) under the symbol "FRAC," subject to official notice of issuance.

The Company intends to use the net proceeds from the offering received by it to repay certain outstanding debt, to pay fees and expenses related to the offering and the remainder for general corporate purposes. The Company will not receive any proceeds from the offering of the common stock by the selling stockholder.

Citigroup, Morgan Stanley, BofA Merrill Lynch, and J.P. Morgan are acting as joint book-running managers for the proposed offering. Wells Fargo Securities, Piper Jaffray & Co. and Houlihan Lokey are acting as senior co-managers for the proposed offering. Guggenheim Securities, Scotia Howard Weil and Stephens Inc. are acting as co-managers for the proposed offering.

This offering will be made only by means of a written prospectus. A copy of the preliminary prospectus for the offering may be obtained, when available, from: Citigroup, attention: Citigroup Inc., c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (800) 831-9146; Morgan Stanley, attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014; BofA Merrill Lynch, attention: Prospectus Department, NC1-004-03-43, 200 North College Street 3rd floor, Charlotte, NC 28255-0001, or by email at dg.prospectus_requests@baml.com; or J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, or by email at prospectus-eq_fi@jpmchase.com.

A registration statement, including a prospectus, which is preliminary and subject to completion, relating to these securities has been filed with the SEC but has not yet become effective. These securities may not be sold nor may offers to buy be accepted prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, 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 any such state or jurisdiction.

About Keane Group, Inc.

Headquartered in Houston, Texas, Keane is one of the largest pure-play providers of integrated well completion services in the U.S., with a focus on complex, technically demanding completion solutions. Keane's primary service offerings include horizontal and vertical fracturing, wireline perforation and logging and engineered solutions, as well as other value-added service offerings. Keane prides itself on its outstanding employee culture, its efficiency and its ability to meet and exceed the expectations of its customers and communities in which it operates.

Forward-Looking Statements

The statements contained in this release that are not historical facts are forward-looking statements. These forward-looking statements are based on Keane’s current expectations and are subject to uncertainty and changes in circumstances. Actual results may differ materially from these expectations due to changes in global, regional or local economic, business, competitive, market, regulatory and other factors, many of which are beyond Keane control. Any forward-looking statement in this release speaks only as of the date of this release. Keane undertakes no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by any applicable securities laws.