*UPDATED TIME* Grace Announces Release Date for Second Quarter 2017 Results

COLUMBIA, Md., July 19, 2017 -- W. R. Grace & Co. (NYSE:GRA) will release its second quarter 2017 financial results at 5:00 a.m. ET on Thursday, July 27, 2017. A company-hosted conference call and webcast will follow now at 8:00 a.m. ET that day (instead of 9:00 a.m. ET, as earlier announced), in order to avoid conflict with other company earnings calls in the sector.

During the call, Fred Festa, Chairman and Chief Executive Officer; Hudson La Force, President and Chief Operating Officer; and Tom Blaser, Senior Vice President and Chief Financial Officer, will discuss second quarter results. A question and answer session with analysts will follow the prepared remarks.

Access to the live webcast and the accompanying slides will be available through the Investor section of the company’s web site, http://investor.grace.com/. Those without access to the internet can participate by dialing +1 844.515.9173 (U.S.) or +1 574.990.9421 (International). The participant passcode is 48210148. Investors are advised to dial into the call at least 10 minutes early in order to register.

An audio replay will be available after 1:00 p.m. ET on July 27. The replay will be accessible by dialing +1 855.859.2056 (U.S.) or +1 404.537.3406 (International) and entering the participant passcode 48210148. The replay will be available for one week.

About Grace

Built on talent, technology, and trust, Grace is a leading global supplier of catalysts and engineered materials. The company’s two industry-leading business segments—Catalysts Technologies and Materials Technologies—provide innovative products, technologies, and services that enhance the products and processes of our customer partners around the world. With approximately 3,700 employees, Grace operates and/or sells to customers in over 60 countries. More information about Grace is available at grace.com.

This announcement contains forward-looking statements. Such statements generally include the words “will,” “plans,” “intends,” “targets,” “expects,” “outlook,” or similar expressions. Forward-looking statements include, without limitation, expected financial positions and results of operations. For these statements, Grace claims the protections of the safe harbor for forward-looking statements contained in Section 27A of the Securities Act and Section 21E of the Exchange Act. Grace is subject to risks and uncertainties that could cause its actual results to differ materially from its projections or forward-looking statements. Factors that could cause actual results to materially differ from those contained in the forward-looking statements include, without limitation: risks related to foreign operations, raw material and energy costs; research and development effectiveness; acquisition success; developments affecting indebtedness; pension obligations; Grace’s legal and environmental proceedings; environmental regulatory compliance costs; customer and supplier relationships; inability to retain key personnel; and those additional factors set forth in Grace's most recent Forms 10-K, 10-Q and 8-K, which have been filed with the Securities and Exchange Commission and are readily available on the internet at www.sec.gov. Reported results should not be considered as an indication of future performance. Readers are cautioned not to place undue reliance on Grace's projections and forward-looking statements, which speak only as of the date thereof. Grace undertakes no obligation to publicly release any revision to the projections and forward-looking statements.

Media Relations
Rich Badmington
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Investor Relations
Tania Almond
T +1 410.531.4590
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