PQ Group Holdings Inc. Announces Launch of its Initial Public Offering of 29,000,000 Shares of Common Stock

PQ Group Holdings Inc. (“PQ” or the “Company”) today announced the launch of its initial public offering of 29,000,000 shares of its common stock. The initial public offering price is currently expected to be between $21.00 and $23.00 per share. PQ has applied to list shares of its common stock on the New York Stock Exchange under the symbol “PQG.”

PQ has granted the underwriters an option to purchase up to an additional 4,350,000 shares of its common stock. The offering is being made pursuant to a registration statement on Form S-1 filed with the U.S. Securities and Exchange Commission (“SEC”) today.

Morgan Stanley, Goldman Sachs & Co. LLC, Citigroup and Credit Suisse are acting as joint book-running managers of the proposed offering, and Morgan Stanley and Goldman Sachs & Co. LLC are acting as representatives of the underwriters; J.P. Morgan, Jefferies, Deutsche Bank Securities and KeyBanc Capital Markets are also acting as joint book-running managers; Evercore ISI and Nomura are acting as co-managers.

The offering will be made only by means of a prospectus. Copies of the preliminary prospectus related to the offering may be obtained, when available, from Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014; Goldman Sachs & Co. LLC, Prospectus Department, 200 West Street, New York, NY 10282, telephone: 1-866-471-2526, facsimile: 212-902-9316 or by emailing prospectus-ny@ny.email.gs.com; Citigroup, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone: 800-831-9146; or Credit Suisse Securities (USA) LLC, Attn: Prospectus Department, One Madison Avenue, New York, NY 10010, telephone: 1-800-221-1037 or by emailing newyork.prospectus@credit-suisse.com.

A registration statement on Form S-1 relating to the offering has been filed with the SEC but has not yet become effective. The shares to be registered may not be sold nor may offers to buy be accepted prior to the time when 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 shares 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 PQ Group Holdings, Inc.

PQ Group Holdings, Inc. is an integrated, global provider of catalysts, specialty materials and chemicals, and services. Our environmental catalysts and services business is a leading global innovator and producer of catalysts for the refinery, emissions control, and petrochemical industries and is also a leading provider of catalyst recycling services to the North American refining industry. Our performance materials and chemicals business is a silicates and specialty materials producer with leading supply positions in North America, Europe, South America, and Asia serving diverse and growing end uses such as personal and industrial cleaning products, fuel efficient tires, surface coatings, and food and beverage products.

Note on Forward-Looking Statements

This press release may contain “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995, including statements regarding the Company’s proposed initial public offering. Words such as “expect,” “estimate,” “project,” “budget,” “forecast,” “anticipate,” “intend,” “plan,” “may,” “will,” “could,” “should,” “believes,” “predicts,” “potential,” “continue,” and similar expressions are intended to identify such forward-looking statements. These forward-looking statements are subject to the inherent uncertainties in predicting future results and conditions and no assurance can be given that the initial public offering discussed above will be completed on the terms described. Completion of the proposed initial public offering and the terms thereof are subject to numerous factors, many of which are beyond the control of the Company, including, without limitation, failure of customary closing conditions and the risk factors and other matters set forth in the prospectus included in the registration statement, in the form last filed with the SEC. As a result of the foregoing considerations, you are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. The Company undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.