Grace Announces Conference Call To Review Chapter 11-Related Financial Matters

W. R. Grace & Co. (NYSE: GRA) today filed its Quarterly Report on Form 10-Q for the period ended September 30, 2012. The report updates disclosure on certain Chapter 11-related accounting matters. Grace will host a conference call and webcast on Friday, November 9, at 10:00 a.m. ET to further discuss these matters, including the accounting, exit financing and tax implications of the recently announced warrant cash settlement agreement. A question and answer session will follow the prepared remarks.

Access to the live webcast and the accompanying slides will be available through the Investor Relations section of the company’s web site, http://investor.grace.com. Those without access to the Internet can participate by dialing +1 800.591.6942 (U.S.) or +1 617.614.4909 (International). The participant passcode is 34831875. Investors are advised to dial into the call at least ten minutes early in order to register.

An audio replay will be available at 12:00 p.m. ET on November 9. The replay will be accessible by dialing +1 888.286.8010 (U.S.) or +1 617.801.6888 (International) and entering the participant passcode 29368191. The replay will be available for one week.

About Grace

Grace is a leading global supplier of catalysts; engineered and packaging materials; and, specialty construction chemicals and building materials. The company’s three industry-leading business segments—Grace Catalysts Technologies, Grace Materials Technologies and Grace Construction Products—provide innovative products, technologies and services that enhance the quality of life. Grace employs approximately 6,000 people in over 40 countries and had 2011 net sales of $3.2 billion. More information about Grace is available at www.grace.com.

This announcement contains forward-looking statements, that is, information related to future, not past, events. Such statements generally include the words “believes,” “plans,” “intends,” “targets,” “will,” “expects,” “suggests,” “anticipates,” “outlook,” “continues” or similar expressions. Forward-looking statements include, without limitation, all statements regarding Grace’s Chapter 11 case; expected financial positions; results of operations; cash flows; financing plans; business strategy; budgets; capital and other expenditures; competitive positions; growth opportunities for existing products; benefits from new technology and cost reduction initiatives, plans and objectives; and markets for securities. For these statements, Grace claims the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. Like other businesses, Grace is subject to risks and uncertainties that could cause its actual results to differ materially from its projections or that could cause other forward-looking statements to prove incorrect. Factors that could cause actual results to materially differ from those contained in the forward-looking statements include, without limitation: developments affecting Grace’s bankruptcy, proposed plan of reorganization and settlements with certain creditors, the cost and availability of raw materials (including rare earth) and energy, developments affecting Grace’s underfunded and unfunded pension obligations, risks related to foreign operations, especially in emerging regions, acquisitions and divestitures of assets and gains and losses from dispositions or impairments, the effectiveness of its research and development and growth investments, its legal and environmental proceedings, costs of compliance with environmental regulation and those factors set forth in Grace’s most recent Annual Report on Form 10-K, quarterly report on Form 10-Q and current reports on Form 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 contained in this announcement, or to update them to reflect events or circumstances occurring after the date of this announcement.

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