Exhibit 99.1

Grace News

GRACE REPORTS SECOND QUARTER RESULTS, RAISES 2011 OUTLOOK

Adjusted EPS $1.11; Adjusted EBIT increased 46%

COLUMBIA, Maryland, July 26, 2011 — W. R. Grace & Co. (NYSE: GRA) today announced its financial results for the second quarter ended June 30, 2011.  Following are Grace’s key financial performance measures for the second quarter:

·                  Sales increased 20.6% to $826.4 million from $685.0 million in the prior year quarter.

·                  Adjusted EBIT increased 45.8% to $132.8 million from $91.1 million in the prior year quarter.  Adjusted EPS was $1.11 compared with $0.76 in the prior year quarter.

·                  Grace net income increased 48.6% to $75.8 million from $51.0 million in the prior year quarter.  Grace’s diluted EPS was $1.00 compared with $0.69 in the prior year quarter.

·                  Adjusted Operating Cash Flow was $109.4 million in the second quarter compared with $101.3 million in the prior year quarter.

·                  Adjusted EBIT Return on Invested Capital was 31.3% on a trailing four quarter basis compared with 25.2% in the prior year quarter.

“I am pleased with how well the Grace team is executing in today’s dynamic operating environment,” said Fred Festa, Grace’s Chairman, President and Chief Executive Officer.  “The investments we have made are making a significant difference to our results, giving us the confidence to increase our outlook for 2011.”

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Second Quarter Results

Sales increased 20.6% overall and 16.1% in the emerging regions compared with the prior year quarter.  The sales increase was due to improved pricing (11.6%), favorable currency translation (5.6%), and higher sales volumes (3.4%).

Gross profit percentage was 36.8% compared with 35.7% in the prior year quarter and 36.2% in the 2011 first quarter.  The increase in gross profit percentage was primarily due to improved pricing partially offset by higher raw materials costs.  Grace currently expects raw material cost inflation for 2011 to be approximately $75 million, excluding rare earth cost inflation.

Adjusted EBIT (see note A) was $132.8 million, an increase of 45.8% compared with $91.1 million in the prior year quarter.  Adjusted EBIT margin was 16.1% compared with 13.3% in the prior year quarter.  The increase in Adjusted EBIT was primarily due to the increase in sales and improved gross profit percentage compared with the prior year quarter.

Grace net income for the second quarter was $75.8 million, or $1.00 per diluted share, compared with $51.0 million, or $0.69 per diluted share, in the prior year quarter.

Six Months Results

Sales increased 17.1% overall and 16.0% in the emerging regions for the six months ended June 30, 2011 compared with the prior year period.  The sales increase was due to improved pricing (9.2%), higher sales volumes (4.9%), and favorable currency translation (3.0%).  Sales were $1,522.1 million compared with $1,299.9 million in the prior year period.

Grace net income for the six months ended June 30, 2011 was $130.0 million, or $1.72 per diluted share, compared with $107.2 million, or $1.44 per diluted share, in the prior year period.

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Grace Davison

Sales up 25%; Segment operating income up 37%

Second quarter sales for the Grace Davison operating segment, which includes specialty catalysts and materials used in a wide range of industrial applications, were $568.6 million, an increase of 25.3% compared with the prior year quarter. The sales increase was due to improved pricing (16.3%), favorable currency translation (5.9%), and higher sales volumes (3.1%).

Sales of this operating segment are reported by product group as follows:

·                  Refining Technologies — sales of catalysts and chemical additives used by petroleum refineries were $267.8 million in the second quarter, an increase of 49.5% compared with the prior year quarter.  Sales in this product group were favorably affected by price increases, implemented to reflect the higher value of new FCC catalyst technologies and to offset the rising cost of raw materials (primarily rare earths), higher volumes, and favorable currency translation.  In the first quarter, Grace introduced eight new catalyst products with improved performance and reduced rare earth content designed to help customers mitigate the significantly higher cost of rare earth.  Almost 50% of Grace’s FCC catalyst customers have adopted at least one of our new low or no rare earth products.

·                  Materials Technologies — sales of engineered materials, coatings and sealants used in industrial and packaging applications were $190.8 million in the second quarter, an increase of 9.6% compared with the prior year quarter.  Sales in this product group were favorably affected by price increases, implemented to offset rising raw materials costs, and favorable currency translation, partially offset by lower sales volumes.

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·                  Specialty Technologies — sales of highly specialized catalysts, materials and equipment used in unique or proprietary applications and markets were $110.0 million in the second quarter, an increase of 9.2% compared with the prior year quarter.  Sales in this product group were favorably affected by higher sales volumes, favorable currency translation, and improved pricing.

Gross profit percentage was 38.1% compared with 36.2% in the prior year quarter and 37.4% in the 2011 first quarter.  The increase in gross profit percentage compared with the prior year quarter was primarily due to improved pricing partially offset by higher raw materials costs.

Segment operating income for the second quarter was $145.7 million compared with $106.5 million in the prior year quarter, a 36.8% increase primarily due to improved pricing and higher sales volumes.  Segment operating margin was 25.6% compared with 23.5% in the prior year quarter.

Sales of the Grace Davison operating segment for the six months ended June 30, 2011 increased 21.2% compared with the prior year period.  Gross profit percentage was 37.8% compared with 35.6% in the prior year period.  Segment operating income of Grace Davison was $264.0 million, an increase of 35.9% compared with the prior year period.  Segment operating margin was 25.0% compared with 22.3% in the prior year period.

Grace Construction Products

Sales up 12%; Emerging region sales up 28%

Second quarter sales for the Grace Construction Products operating segment, which includes Specialty Construction Chemicals (SCC) products and Specialty Building Materials (SBM) products used in commercial, infrastructure and residential construction, were $257.8 million, up 11.6% compared with the prior year quarter.  The sales increase was due to favorable currency translation (5.0%), higher sales volumes (4.2%), and

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improved pricing (2.4%).  Sales in the emerging regions increased 27.8% compared with the prior year quarter.

Sales of this operating segment are reported by geographic region as follows:

·                  Americas - sales to customers in the Americas were $129.9 million in the second quarter, an increase of 11.9% compared with the prior year quarter.   Sales in North America increased 5.9% from the prior year quarter primarily due to improved pricing and higher sales volumes.  Sales in Latin America grew 43.1% compared with the prior year quarter primarily due to higher sales volumes.

·                  Europe — sales to customers in Europe, the Middle East, Africa and India were $78.5 million in the second quarter, an increase of 4.7% compared with the prior year quarter. Sales were favorably impacted by currency translation and improved pricing, partially offset by lower sales volumes.

·                  Asia — sales to customers in Asia (excluding India), Australia and New Zealand were $49.4 million in the second quarter, an increase of 23.5% compared with the prior year quarter.  Sales increased primarily due to higher sales volumes and favorable currency translation.

Gross profit percentage was 34.1% in the second quarter compared with 35.0% in the prior year quarter and 33.7% in the 2011 first quarter.  The decrease in gross profit percentage compared with the prior year quarter was primarily due to higher raw material costs and the additional operating costs of new plants in the emerging regions, partially offset by improved pricing.  The increase in gross profit percentage compared with the 2011 first quarter was primarily due to improved operating leverage.

Segment operating income for the second quarter was $29.6 million compared with $25.7 million for the prior year quarter, a 15.2% increase primarily due to higher sales volumes and favorable currency translation, partially offset by lower gross profit percentage.  Segment operating margin was 11.5% compared with 11.1% in the prior year quarter.

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Sales of the Grace Construction Products operating segment for the six months ended June 30, 2011 increased 8.8% compared with the prior year period.  Gross profit percentage was 33.9% compared with 34.9% in the prior year period.  Segment operating income was $45.9 million, an increase of 11.1% compared with the prior year period.  Segment operating margin was 9.9% compared with 9.7% in the prior year period.

Corporate Costs

Corporate costs increased $4.7 million in the second quarter compared with the prior year quarter primarily due to higher performance based incentive compensation.

Pension Expense

Defined benefit pension expense for the second quarter was $15.1 million compared with $18.4 million for the prior year quarter, a 17.9% decrease.  The decrease in expense was primarily due to benefits from an accelerated plan contribution of approximately $180 million made in March 2011 and good plan asset performance in the U.S. in 2010.

Interest

Interest expense was $11.0 million for the second quarter compared with $11.0 million for the prior year quarter.  The annualized weighted average interest rate on pre-petition obligations for the second quarter was 3.5%.

Income Taxes

Income taxes are recorded at a global effective tax rate of approximately 32% before considering the effects of certain non-deductible Chapter 11 expenses, changes in uncertain tax positions and other discrete adjustments.

Grace has not had to pay U.S. Federal income taxes in cash in recent years since available tax deductions and credits have fully offset U.S. taxable income.  Income taxes in foreign jurisdictions are generally paid in cash.  Grace expects to generate significant U.S. Federal net operating losses upon emergence from bankruptcy.  Income taxes paid in

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cash, excluding tax settlements, were $19.4 million for the six months ended June 30, 2011, or approximately 10.1% of income before income taxes.

Cash Flow Performance Measure

Adjusted Operating Cash Flow (see note A) was $130.3 million for the six months ended June 30, 2011 compared with $128.5 million in the prior year period.  Capital expenditures were $57.7 million compared with $42.2 million for the prior year period.  Net working capital days were 56 days for the second quarter, compared with 49 days in the prior year quarter and 61 days in the 2011 first quarter.  Higher rare earth costs added $47.8 million to accounts receivable and inventories during the six months ended June 30, 2011.

Chapter 11 Proceedings

On April 2, 2001, Grace and 61 of its United States subsidiaries and affiliates, including its primary U.S. operating subsidiary W. R. Grace & Co.—Conn., filed voluntary petitions for reorganization under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) in order to resolve Grace’s asbestos-related liabilities.

On January 31, 2011, the Bankruptcy Court issued an order confirming Grace’s Joint Plan of Reorganization (the “Plan”).  The confirmation order must next be affirmed by the United States District Court.  On June 28-29, 2011, the District Court heard oral arguments on affirmation and appeals to the confirmation order.  The timing of Grace’s emergence from Chapter 11 will depend on affirmation of the Plan by the District Court and the satisfaction or waiver of the other conditions set forth in the Plan, including the resolution of any further appeals.  Grace is preparing to consummate the Plan as quickly as practicable.  The Plan sets forth how all pre-petition claims and demands against Grace will be resolved.  See Grace’s most recent periodic reports filed with the SEC for a detailed description of the Plan.

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2011 Outlook Update

Higher sales; Higher Adjusted EBIT

As of July 26th, Grace expects 2011 sales to be $3.25 to $3.30 billion, compared with $2.85 to $2.95 billion in its February 10, 2011 outlook.

Grace expects 2011 Adjusted EBIT to be $465 to $480 million, compared with $365 to $385 million in its February outlook.  Grace expects 2011 Adjusted EBITDA to be $585 to $600 million, compared with $485 to $505 million in its February outlook.

For 2011, Grace expects to maintain its gross profit percentage within its 35-37% target range.  Gross profit percentage in the second half of 2011 is expected to be lower than in the first half of 2011 primarily due to the mathematical effect of higher rare earth surcharges and costs on calculated gross profit percentages.

Grace is unable to make a reasonable estimate of the income effects of the consummation of the Plan because the value of certain consideration payable to the asbestos trusts under the Plan (primarily the deferred payments and the warrants) will not ultimately be determined until the effective date of the Plan, the timing of which is uncertain.  When the Plan is consummated, Grace expects to reduce its liabilities subject to compromise, including asbestos-related contingencies, recognize the value of the deferred payments and the warrants and recognize expense for the costs of consummating the Plan and the income tax effects of these items.

Investor Call

Grace will discuss these results during an investor conference call and webcast today starting at 11:00 a.m. ET.  To access the call and webcast, interested participants should go to the Investor Information — Investor Presentations portion of the company’s web site, www.grace.com, and click on the webcast link.

Those without access to the Internet can listen to the investor call by dialing +1.800.659.2032 (international callers dial +1.617.614.2712) and entering conference ID

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#55991140.  Investors are advised to access the call at least ten minutes early in order to register.  An audio replay will be available from 2:00 p.m. ET on July 26 until 11:59 p.m. ET on August 2.  The replay will be accessible by dialing +1.888.286.8010 (international callers dial +1.617.801.6888) and entering conference call ID #55112870.

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Grace is a leading global supplier of catalysts and other products to petroleum refiners; catalysts for the manufacture of plastics; silica-based engineered and specialty materials for a wide range of industrial applications; sealants and coatings for food and beverage packaging, and specialty chemicals, additives and building materials for commercial and residential construction. Founded in 1854, Grace has operations in over 40 countries. For more information, visit Grace’s web site at www.grace.com.

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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, 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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Chart 1

W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Operations (unaudited)

The Notes to the Financial Information are included as part of the Earnings Release.

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Chart 2

W. R. Grace & Co. and Subsidiaries

Analysis of  Operations (unaudited)

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Chart 2 (cont.)

W. R. Grace & Co. and Subsidiaries

Analysis of Operations (unaudited)

Amounts may not add due to rounding.

The Notes to the Financial Information are included as part of the Earnings Release.

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Chart 3

W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Cash Flows (unaudited)