W. R. Grace & Co Investor Presentation — March 2018

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New York Stock ExchangeInvestor Day 2018 |

28:30 a.m. Welcome and Opening Remarks

Senior Vice President, Chief Financial Officer

Chairman and Chief Executive Officer

Strategy and Grace Value Model

President and Chief Operating Officer

President, Specialty Catalysts

10:15 a.m. Break10:25 a.m. Materials Technologies

President, Materials Technologies

Refining Technologies

President, Refining Technologies

Senior Vice President, Chief Financial Officer

Chairman and Chief Executive Officer

12:30 p.m. Leadership LuncheonInvestor Day 2018 |

3Statement Regarding Safe Harbor For Forward -Looking Statements

This presentation 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, expected

financial positions; results of operations; cash flows; financing plans; business strategy; operating plans; capital and othe r expenditures; competitive positions; growth

opportunities; benefits from new technology and cost reduction initiatives; and markets for securities. 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. Like other busine sses, 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 statemen ts to prove incorrect. Factors that could cause actual