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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 10-Q

W. R. GRACE & CO.

7500 Grace Drive
Columbia, Maryland 21044
(410) 531-4000
(Address and phone number of principal executive offices)

        Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

        Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ý    No o

        Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act.

        Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o    No ý

        Indicate the number of shares outstanding of each of the issuer's classes of common stock, as of the latest practicable date.

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W. R. GRACE & CO. AND SUBSIDIARIES

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        Unless the context otherwise indicates, in this Report the terms "Grace," "we," "us," "our" or "the company" mean W. R. Grace & Co. and/or its consolidated subsidiaries and affiliates. Unless otherwise indicated, the contents of websites mentioned in this report are not incorporated by reference or otherwise made a part of this Report. Grace®, the Grace® logo and, except as otherwise indicated, the other product names used in the text of this report are trademarks, service marks, and/or trade names of operating units of W. R. Grace & Co. or its affiliates and/or subsidiaries.

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PART I. FINANCIAL INFORMATION

Item 1.    Financial Statements

Review by Independent Registered Public Accounting Firm

        With respect to the interim consolidated financial statements included in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2010, PricewaterhouseCoopers LLP, the company's independent registered public accounting firm, has applied limited procedures in accordance with professional standards for a review of such information. Their report on the interim consolidated financial statements, which follows, states that they did not audit and they do not express an opinion on the unaudited interim financial statements. Accordingly, the degree of reliance on their report on the unaudited interim financial statements should be restricted in light of the limited nature of the review procedures applied. This report is not considered a "report" within the meaning of Sections 7 and 11 of the Securities Act of 1933, and, therefore, the independent accountants' liability under Section 11 does not extend to it.

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Report of Independent Registered Public Accounting Firm

To the Shareholders and Board of Directors of W. R. Grace & Co.:

        We have reviewed the accompanying consolidated balance sheet of W. R. Grace & Co. and its subsidiaries as of September 30, 2010, and the related consolidated statements of operations and comprehensive income (loss) for the three-month and nine-month periods ended September 30, 2010 and 2009, and the consolidated statements of equity (deficit) and of cash flows for the nine-month periods ended September 30, 2010 and 2009. These interim financial statements are the responsibility of the Company's management.

        We conducted our review in accordance with the standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

        Based on our review, we are not aware of any material modifications that should be made to the accompanying consolidated interim financial statements for them to be in conformity with accounting principles generally accepted in the United States of America.

        The accompanying interim consolidated financial statements have been prepared assuming that the company will continue as a going concern. As discussed in Notes 1 and 2 to the consolidated interim financial statements, on April 2, 2001, the Company and substantially all of its domestic subsidiaries voluntarily filed for protection under Chapter 11 of the United States Bankruptcy Code, which raises substantial doubt about the Company's ability to continue as a going concern in its present form. Management's intentions with respect to this matter are also described in Notes 1 and 2. The accompanying consolidated interim financial statements do not include any adjustments that might result from the outcome of this uncertainty.

        We previously audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet as of December 31, 2009, and the related consolidated statements of operations, equity (deficit), comprehensive income (loss), and of cash flows for the year then ended (not presented herein), and in our report dated February 25, 2010, we expressed an unqualified opinion on those consolidated financial statements with an explanatory paragraph relating to the Company's ability to continue as a going concern.

PricewaterhouseCoopers LLP
McLean, Virginia
November 5, 2010

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W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Operations (unaudited)

(In millions, except per share amounts)

The Notes to Consolidated Financial Statements are an integral part of these statements.

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W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Cash Flows (unaudited)

(In millions)

The Notes to Consolidated Financial Statements are an integral part of these statements.

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W. R. Grace & Co. and Subsidiaries

Consolidated Balance Sheets (unaudited)

(In millions, except par value and shares)

The Notes to Consolidated Financial Statements are an integral part of these statements.

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W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Equity (Deficit) (unaudited)

(In millions)

The Notes to Consolidated Financial Statements are an integral part of these statements.

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W. R. Grace & Co. and Subsidiaries

Consolidated Statements of Comprehensive Income (unaudited)

(In millions)

The Notes to Consolidated Financial Statements are an integral part of these statements.

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Notes to Consolidated Financial Statements

1. Basis of Presentation and Summary of Significant Accounting and Financial Reporting Policies

        W. R. Grace & Co., through its subsidiaries, is engaged in specialty chemicals and specialty materials businesses on a global basis through two operating segments: Grace Davison, which includes specialty catalysts and specialty materials used in a wide range of energy, refining, consumer, industrial, packaging and life sciences applications; and Grace Construction Products, which includes specialty construction chemicals and specialty building materials used in commercial, infrastructure and residential construction.

        W. R. Grace & Co. conducts substantially all of its business through a direct, wholly-owned subsidiary, W. R. Grace & Co.-Conn. ("Grace-Conn."). Grace-Conn. owns substantially all of the assets, properties and rights of W. R. Grace & Co. on a consolidated basis, either directly or through subsidiaries.

        As used in these notes, the term "Company" refers to W. R. Grace & Co. The term "Grace" refers to the Company and/or one or more of its subsidiaries and, in certain cases, their respective predecessors.

        Voluntary Bankruptcy Filing    During 2000 and the first quarter of 2001, Grace experienced several adverse developments in its asbestos-related litigation, including: a significant increase in personal injury claims, higher than expected costs to resolve personal injury and certain property damage claims, and class action lawsuits alleging damages from Zonolite® Attic Insulation ("ZAI"), a former Grace attic insulation product.

        After a thorough review of these developments, Grace's Board of Directors concluded that a federal court-supervised bankruptcy process provided the best forum available to achieve fairness in resolving these claims and on April 2, 2001 (the "Filing Date"), Grace and 61 of its United States subsidiaries and affiliates, (collectively, the "Debtors"), filed voluntary petitions for reorganization (the "Filing") under Chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the District of Delaware (the "Bankruptcy Court"). The cases were consolidated and are being jointly administered under case number 01-01139 (the "Chapter 11 Cases"). Grace's non-U.S. subsidiaries and certain of its U.S. subsidiaries were not included in the Filing.

        Under Chapter 11, the Debtors have continued to operate their businesses as debtors-in-possession under court protection from creditors and claimants, while using the Chapter 11 process to develop and implement a plan for addressing the asbestos-related claims. Since the Filing, all motions necessary to conduct normal business activities have been approved by the Bankruptcy Court. (See Note 2 for Chapter 11 Information)

        Basis of Presentation    The interim Consolidated Financial Statements presented herein are unaudited and should be read in conjunction with the Consolidated Financial Statements presented in the Company's 2009 Annual Report on Form 10-K. Such interim Consolidated Financial Statements reflect all adjustments that, in the opinion of management, are necessary for a fair statement of the results of the interim periods presented; all such adjustments are of a normal recurring nature except for the impacts of adopting new accounting standards as discussed below. Potential accounting adjustments discovered during normal reporting and accounting processes are evaluated on the basis of materiality, both individually and in the aggregate, and are recorded in the accounting period discovered, unless a restatement of a prior period is necessary. All significant intercompany accounts and transactions have been eliminated.

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Notes to Consolidated Financial Statements (Continued)

1. Basis of Presentation and Summary of Significant Accounting and Financial Reporting Policies (Continued)

        The results of operations for the nine-month interim period ended September 30, 2010 are not necessarily indicative of the results of operations for the year ending December 31, 2010.

        Reclassifications    Certain amounts in prior years' Consolidated Financial Statements have been reclassified to conform to the 2010 presentation. Such reclassifications have not materially affected previously reported amounts in the Consolidated Financial Statements.

        Use of Estimates    The preparation of financial statements in conformity with U.S. generally accepted accounting principles (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements, and the reported amounts of revenues and expenses for the periods presented. Actual amounts could differ from those estimates, and the differences could be material. Changes in estimates are recorded in the period identified. Grace's accounting measurements that are most affected by management's estimates of future events are:

•

Contingent liabilities, which depend on an assessment of the probability of loss and an estimate of ultimate resolution cost, such as asbestos-related matters (see Notes 2 and 3), income taxes (see Note 7), environmental remediation (see Note 10), and litigation (see Note 10);



•

Pension and postretirement liabilities that depend on assumptions regarding participant life spans, future inflation, discount rates and total returns on invested funds (see Note 8); and



•

Realization values of net deferred tax assets and insurance receivables, which depend on projections of future income and cash flows and assessments of insurance coverage and insurer solvency.

        The accuracy of management's estimates may be materially affected by the uncertainties arising under Grace's Chapter 11 proceeding.

        Effect of New Accounting Standards—In June 2009, the Financial Accounting Standards Board ("FASB") issued Statement of Financial Accounting Standards ("SFAS") No. 167, "Amendments to FASB Interpretation No. 46(R)", which was subsequently codified as Accounting Standard Codification ("ASC") 810. The objective of this Statement is to improve financial reporting by enterprises involved with variable interest entities. Grace adopted this standard in 2010 and it did not have a material effect on its Consolidated Financial Statements.

        In January 2010, the FASB issued Accounting Standard Update ("ASU") 2010-06 "Improving Disclosures about Fair Value Measurements". This update provides additional guidance and expands the disclosure requirements related to transfers of assets in and out of Levels 1 and 2 as well as the activity for Level 3 fair value measurements. The new disclosures and clarifications of existing disclosures are effective for interim and annual reporting periods beginning after December 15, 2009, except for the disclosures about purchases, sales, issuances, and settlements in the roll forward of activity in Level 3 fair value measurements. Those disclosures are effective for fiscal years beginning after December 15, 2010, and for interim periods within those fiscal years. Grace adopted the new disclosures requirements which were effective December 15, 2009 and they did not have a material effect on its Consolidated Financial Statements. See Note 6 for further discussion of ASC 820.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information

        Official Parties to Grace's Chapter 11 Cases    Three creditors' committees, two representing asbestos claimants, the Official Committee of Asbestos Personal Injury Claimants (the "PI Committee") and the Official Committee of Asbestos Property Damage Claimants (the "PD Committee"), and the third representing other unsecured creditors, and the Official Committee of Equity Security Holders (the "Equity Committee"), have been appointed in the Chapter 11 Cases. These committees, a legal representative of future asbestos personal injury claimants (the "PI FCR") and a legal representative of future asbestos property damage claimants (the "PD FCR"), have the right to be heard on all matters that come before the Bankruptcy Court and have important roles in the Chapter 11 Cases. The Debtors are required to bear certain costs and expenses of the committees and the representatives of future asbestos claimants, including those of their counsel and financial advisors.

        As discussed below, the Debtors, the Equity Committee, the PI Committee and the PI FCR have filed a joint plan of reorganization, subsequently amended, with the Bankruptcy Court that is designed to address all pending and future asbestos-related claims and all other pre-petition claims as outlined therein. The committee representing general unsecured creditors, the PD Committee and the PD FCR are not co-proponents of this joint plan.

        Plans of Reorganization    On November 13, 2004, Grace filed a proposed plan of reorganization, as well as several associated documents, including a disclosure statement, trust distribution procedures, exhibits and other supporting documents, with the Bankruptcy Court. On January 13, 2005, Grace filed an amended plan of reorganization (the "Prior Plan") and related documents to address certain objections of creditors and other interested parties. At the time it was filed, the Prior Plan was supported by the committee representing general unsecured creditors and the Equity Committee, but was not supported by the PI Committee, the PD Committee or the PI FCR. At the time of filing of the Prior Plan, the PD FCR had not been appointed.

        On July 26, 2007, the Bankruptcy Court terminated Grace's exclusive rights to propose a plan of reorganization and solicit votes thereon. As a result of the termination of these rights, any party-in-interest may propose a competing plan of reorganization. On November 5, 2007, the PI Committee and the PI FCR filed a proposed plan of reorganization (the "PI Plan") with the Bankruptcy Court.

        On April 6, 2008, the Debtors reached an agreement in principle with the PI Committee, the PI FCR, and the Equity Committee designed to resolve all present and future asbestos-related personal injury claims (the "PI Settlement").

        Prior to the PI Settlement, the Bankruptcy Court entered a case management order for estimating liability for pending and future asbestos personal injury claims. A trial for estimating liability for such claims began in January 2008 but was suspended in April 2008 as a result of the PI Settlement.

        As contemplated by the PI Settlement, on September 19, 2008, the Debtors, supported by the Equity Committee, the PI Committee and the PI FCR, as co-proponents, filed a joint plan of reorganization with the Bankruptcy Court to reflect the terms of the PI Settlement.

        On November 21, 2008, the Debtors reached an agreement in principle (the "ZAI PD Term Sheet") with the Putative Class Counsel to the U.S. ZAI claimants, the PD FCR, and the Equity

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

Committee designed to resolve all present and future U.S. ZAI property damage claims and demands as described below.

        On December 13, 2009, the Ontario Superior Court of Justice, in the Grace Canada, Inc. proceeding pending under the Companies' Creditors Arrangement Act, approved the Amended and Restated Canadian ZAI Minutes of Settlement (the "Amended Settlement"), entered into by the Company, Grace Canada, Inc. and legal representatives of Canadian ZAI property damage claimants on November 16, 2009, that would settle all Canadian ZAI property damage claims and demands. Under the Amended Settlement, all Canadian ZAI property damage claims and demands would be paid through a separate Canadian ZAI property damage claims fund of CDN$8.6 million. The effectiveness of the Amended Settlement is subject to the approval of the Bankruptcy Court. The Amended Settlement is also subject to the confirmation and effectiveness of the Joint Plan (as defined below) and will be considered null and void if the Bankruptcy Court's confirmation order is not issued on or before December 31, 2010. The Crown has filed objections to the terms of the Joint Plan based on the provisions of, and their treatment under, the Amended Settlement. The Bankruptcy Court is considering those confirmation objections.

        As contemplated by the PI Settlement and the ZAI PD Term Sheet, the Debtors, supported by the Equity Committee, the PI Committee and the PI FCR, as co-proponents, amended the joint plan of reorganization and several associated documents, including a disclosure statement, trust distribution procedures, exhibits and other supporting documents on December 18, 2008, February 3, 2009 and February 27, 2009 through filings with the Bankruptcy Court. The Debtors and co-proponents filed technical modifications to the joint plan and certain exhibits on September 4, 2009, October 12, 2009, December 16, 2009 and March 19, 2010. The joint plan of reorganization (as amended and modified, the "Joint Plan") is designed to address all pending and future asbestos-related claims and all other pre-petition claims as outlined therein. The Joint Plan supersedes the Prior Plan and the PI Plan.

        Under the Joint Plan, two asbestos trusts would be established under Section 524(g) of the Bankruptcy Code. All asbestos-related personal injury claims would be channeled for resolution to one asbestos trust (the "PI Trust") and all asbestos-related property damage claims, including U.S and Canadian ZAI property damage claims, would be channeled to a separate asbestos trust (the "PD Trust").

        The Joint Plan assumes that Cryovac, Inc. ("Cryovac"), a wholly-owned subsidiary of Sealed Air Corporation ("Sealed Air"), will fund the PI Trust and the PD Trust with an aggregate of: (i) $512.5 million in cash (plus interest at 5.5% compounded annually from December 21, 2002); and (ii) 18 million shares (reflecting a two-for-one stock split) of common stock of Sealed Air, pursuant to the terms of a settlement agreement resolving asbestos-related, successor liability and fraudulent transfer claims against Sealed Air and Cryovac, as further described below (the "Sealed Air Settlement"). The value of the Sealed Air Settlement changes daily with the accrual of interest and the trading value of Sealed Air common stock. The Joint Plan also assumes that Fresenius AG ("Fresenius") will fund the PI Trust and the PD Trust with an aggregate of $115.0 million pursuant to the terms of a settlement agreement resolving asbestos-related, successor liability and fraudulent transfer claims against Fresenius, as further described below (the "Fresenius Settlement"). The Sealed Air Settlement and the Fresenius Settlement have been approved by the Bankruptcy Court but remain subject to the fulfillment of specified conditions.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

        Any plan of reorganization, including the Joint Plan and any plan of reorganization that may be filed in the future by a party-in-interest, will become effective only after a vote of eligible creditors and with the approval of the Bankruptcy Court and the U.S. District Court for the District of Delaware (the "District Court"). On March 9, 2009, the Bankruptcy Court approved the disclosure statement associated with the Joint Plan. On March 31, 2009, Grace distributed the Joint Plan, exhibits and disclosure statement along with voting materials to all creditors entitled to vote on the Joint Plan. The Bankruptcy Court required all creditors eligible to vote on the Joint Plan to submit their votes, and all parties-in-interest who object to the Joint Plan to submit their objections, by May 20, 2009. All classes of creditors entitled to vote accepted the Joint Plan. The class of general unsecured creditors, who voted on a provisional basis pending a determination by the Bankruptcy Court as to whether the class is impaired and therefore entitled to a vote, voted to reject the Joint Plan. The objections filed generally relate to demands for interest at rates higher than provided for in the Joint Plan, assertions that the Joint Plan may impair insurers' contractual rights, assertions that the Joint Plan discriminates against Libby, Montana personal injury claimants and the classification and treatment of claims under the Joint Plan.

        Hearings to determine whether the Bankruptcy Court will approve the Joint Plan were held in June, September and October of 2009 and closing arguments on confirmation were held in January 2010.

        Grace believes that the Joint Plan complies with the requirements for confirmation under the Bankruptcy Code and Grace intends to vigorously defend the Joint Plan against these and all other objections. If certain objections were resolved adversely to Grace and the other Joint Plan proponents, or if rulings by the Bankruptcy Court resolving certain objections favorably to the Joint Plan proponents were appealed, certain conditions to the Joint Plan, including for example, payments pursuant to the Sealed Air Settlement and the Fresenius Settlement, might not be satisfied and potential lenders might not be willing to provide the new financing that Grace requires to fund the Joint Plan. The resolution of these objections and any related appeals could have a material effect on the terms and timing of Grace's emergence from Chapter 11.

        The Joint Plan is designed to address all pending and future asbestos-related claims and demands and all other pre-petition claims as outlined respectively therein. However, it is possible that the Joint Plan will not be confirmed by the Bankruptcy Court, or become effective if it is confirmed. If the Joint Plan is not confirmed by the Bankruptcy Court or the District Court or does not become effective, the Debtors would expect to resume the estimation trial, which was suspended in April 2008 due to the PI Settlement, to determine the amount of its asbestos-related liabilities. Under those circumstances, a different plan of reorganization may ultimately be confirmed and become effective. Under a different plan of reorganization, the interests of holders of Company common stock could be substantially diluted or cancelled. The value of Company common stock following the effective date of any plan of reorganization and the extent of any recovery by non-asbestos-related creditors would depend principally on the amount of Debtors' asbestos-related liability under such effective plan of reorganization.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

        Joint Plan of Reorganization    Under the terms of the Joint Plan, claims under the Chapter 11 Cases would be satisfied as follows:

Asbestos-Related Personal Injury Claims

        All pending and future asbestos-related personal injury claims and demands ("PI Claims") would be channeled to the PI Trust for resolution. The PI Trust would use specified trust distribution procedures to satisfy allowed PI Claims.

        The PI Trust would be funded with:

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$250 million in cash plus interest thereon from January 1, 2009 to the effective date of the Joint Plan to be paid by Grace;



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Cash in the amount of the PD Initial Payment (as described below) and the ZAI Initial Payment (as described below) to be paid by Grace;



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A warrant to acquire 10 million shares of Company common stock at an exercise price of $17.00 per share, expiring one year from the effective date of the Joint Plan;



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Rights to all proceeds under all of the Debtors' insurance policies that are available for payment of PI Claims;



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Cash in the amount of $512.5 million plus interest thereon from December 21, 2002 to the effective date of the Joint Plan at a rate of 5.5% per annum to be paid by Cryovac reduced by the amount of Cryovac's contribution to the PD Initial Payment and the ZAI Initial Payment (as described below) and 18 million shares of Sealed Air common stock to be paid by Cryovac pursuant to the Sealed Air Settlement;



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Cash in the amount of $115 million to be paid by Fresenius pursuant to the Fresenius Settlement reduced by the amount of Fresenius' contribution to the PD Initial Payment and ZAI Initial Payment (as described below); and



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Deferred payments by Grace of $110 million per year for five years beginning in 2019, and $100 million per year for 10 years beginning in 2024, that would be subordinate to any bank debt or bonds outstanding, guaranteed by the Company and secured by the Company's obligation to issue 50.1% of its outstanding common stock (measured as of the effective date of the Joint Plan) to the PI Trust in the event of default.

Asbestos-Related Property Damage Claims

        All pending and future asbestos-related property damage claims and demands ("PD Claims") would be channeled to the PD Trust for resolution. The PD Trust would contribute CDN$8.6 million to a separate Canadian ZAI PD Claims fund through which Canadian ZAI PD Claims would be resolved. The PD Trust would generally resolve U.S. ZAI PD Claims that qualify for payment by paying 55% of the claimed amount, but in no event would the PD Trust pay more per claim than 55% of $7,500 (as adjusted for inflation each year after the fifth anniversary of the effective date of the Joint Plan). The PD Trust would satisfy other allowed PD Claims pursuant to specified trust distribution procedures with cash payments in the allowed settlement amount. Unresolved PD Claims and future PD claims would be litigated pursuant to procedures to be approved by the Bankruptcy

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

Court and, to the extent such claims were determined to be allowed claims, would be paid in cash by the PD Trust in the amount determined by the Bankruptcy Court.

        The PD Trust would contain two accounts, the PD account and the ZAI PD account. U.S. ZAI PD Claims would be paid from the ZAI PD account and other PD Claims would be paid from the PD account. The separate Canadian ZAI PD Claims would be paid by a separate fund established in Canada. Each account would have a separate trustee and the assets of the accounts would not be commingled. The two accounts would be funded as follows:

        The PD account would be funded with:

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Approximately $147 million in cash plus cash in the amount of the estimated first six months of PD Trust expenses, to be paid by Cryovac and Fresenius (the "PD Initial Payment"), and CDN$8.6 million in cash to be paid by Grace pursuant to the Amended Settlement.



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A Grace obligation (the "PD Obligation") providing for a payment to the PD Trust every six months in the amount of the non-ZAI PD Claims allowed during the preceding six months plus interest and, except for the first six months, the amount of PD Trust expenses for the preceding six months. The aggregate amount to be paid under the PD Obligation would not be capped.

        The ZAI PD account would be funded as follows (the "ZAI Assets"):

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$30 million in cash plus interest from April 1, 2009 to the effective date, to be paid by Cryovac and Fresenius (the "ZAI Initial Payment").



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$30 million in cash on the third anniversary of the effective date of the Joint Plan, to be paid by Grace.



•

A Grace obligation providing for the payment of up to 10 contingent deferred payments of $8 million per year during the 20-year period beginning on the fifth anniversary of the effective date of the Joint Plan, with each such payment due only if the ZAI Assets fall below $10 million during the preceding year.

        All payments to the PD Trust that were not to be paid on the effective date of the Joint Plan would be secured by the Company's obligation to issue 50.1% of its outstanding common stock (measured as of the effective date of the Joint Plan) to the PD Trust in the event of default. Grace would have the right to conduct annual audits of the books, records and claim processing procedures of the PD Trust.

Other Claims

        All allowed administrative claims would be paid in cash and all allowed priority claims would be paid in cash with interest. Secured claims would be paid in cash with interest or by reinstatement. Allowed general unsecured claims would be paid in cash, including any post-petition interest as follows: (i) for holders of pre-petition bank credit facilities, post-petition interest at the rate of 6.09% from the Filing Date through December 31, 2005 and thereafter at floating prime, in each case compounded quarterly; and (ii) for all other unsecured claims that are not subject to a settlement agreement providing otherwise, interest at 4.19% from the Filing Date, compounded annually, or if pursuant to an existing contract, interest at the non-default contract rate. The general unsecured creditors that hold pre-petition bank debt have asserted that they are entitled to post-petition interest

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

at the default rate specified under the terms of the underlying credit agreements which, if paid, would be approximately an additional $110 million. Grace has asserted that such creditors are not entitled to interest at the default rate and has requested the Bankruptcy Court to determine the appropriate rate at which interest would be payable. Unsecured employee-related claims such as pension, retirement medical obligations and workers compensation claims, would be reinstated.

Effect on Company Common Stock

        The Joint Plan assumes that Company common stock will remain outstanding at the effective date of the Joint Plan, but that the interests of existing shareholders would be subject to dilution by additional shares of Company common stock issued under the warrant or in the event of default in respect of the deferred payment obligations to the PI Trust or the PD Trust under the Company's security obligation.

        In order to preserve significant tax benefits which are subject to elimination or limitation in the event of a change in control (as defined by the Internal Revenue Code) of Grace, the Joint Plan provides that under certain circumstances, the Board of Directors would have the authority to impose restrictions on the transfer of Grace stock with respect to certain 5% shareholders. These restrictions will generally not limit the ability of a person that holds less than 5% of Grace stock after emergence to either buy or sell stock on the open market. In addition, the Bankruptcy Court has approved trading restrictions on Grace common stock until the effective date of a plan of reorganization. These restrictions prohibit (without the consent of Grace) a person from acquiring more than 4.75% of the outstanding Grace common stock or, for any person already holding more than 4.75%, from increasing such person's holdings. This summary of the stock transfer restrictions does not purport to be complete and is qualified in its entirety by reference to the order of the Bankruptcy Court, which has been filed with the SEC.

        Claims Filings    The Bankruptcy Court established a bar date of March 31, 2003 for claims of general unsecured creditors, PD Claims (other than ZAI PD Claims) and medical monitoring claims related to asbestos. The bar date did not apply to PI Claims or claims related to ZAI PD Claims.

        Approximately 14,900 proofs of claim were filed by the March 31, 2003 bar date. Of these claims, approximately 9,500 were non-asbestos related, approximately 4,400 were PD Claims, and approximately 1,000 were for medical monitoring. The medical monitoring claims were made by individuals who allege exposure to asbestos through Grace's products or operations. Under the Joint Plan, these claims would be channeled to the PI Trust for resolution. In addition, approximately 800 proofs of claim were filed after the bar date.

        Approximately 6,685 non-asbestos related claims were filed by employees or former employees (the "Employee Claims") for benefits arising from Grace's existing plans, programs, and policies regarding employee bonuses and other compensation, indemnity agreements or various medical, insurance, severance, retiree and other benefits (collectively, the "Grace Benefit Programs"). On July 3, 2010, the Bankruptcy Court entered an order disallowing the Employee Claims because: (i) Grace has continued to pay its Grace Benefit Programs obligations during the Chapter 11 Cases and intends to do so for the remainder of the Chapter 11 Cases and thereafter; and (ii) pursuant to the Joint Plan, Grace is assuming its obligations under the Grace Benefit Programs and will continue to pay all such obligations pursuant to the terms and conditions of the applicable Grace Benefit Programs. The omnibus objection to Employee Claims does not address an additional approximately 255 claims filed by employees and former employees. These remaining employee-related claims will

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

be addressed through the claim objection process and the dispute resolution procedures approved by the Bankruptcy Court.

        The remaining non-asbestos, non-employee related claims include claims for payment of goods and services, taxes, product warranties, principal and interest under pre-petition credit facilities, amounts due under leases and other contracts, leases and other executory contracts rejected in the Chapter 11 Cases, environmental remediation, pending non-asbestos-related litigation, and non-asbestos-related personal injury. The Debtors analyzed the claims filed pursuant to the March 31, 2003 bar date and found that many are duplicates, represent the same claim filed against more than one of the Debtors, lack any supporting documentation, or provide insufficient supporting documentation. As of September 30, 2010, of the approximately 4,335 non-ZAI PD Claims filed, approximately 395 claims have been resolved, approximately 3,905 claims have been expunged, reclassified by the Debtors or withdrawn by claimants, leaving approximately 35 claims to be addressed through the property damage case management order approved by the Bankruptcy Court and/or the Joint Plan or another plan of reorganization. The claims remaining to be addressed include 16 asbestos property damage claims that had been expunged by a bankruptcy court order that was reversed by an order of the District Court on September 29, 2009. As of September 30, 2010, of the approximately 3,295 non-asbestos claims filed, approximately 1,910 have been expunged or withdrawn by claimants, approximately 1,180 have been resolved, and an additional approximately 205 claims are to be addressed through the claim objection process and the dispute resolution procedures approved by the Bankruptcy Court.

        Additionally, by order dated June 17, 2008, the Bankruptcy Court established October 31, 2008 as the bar date for ZAI PD Claims related to property located in the U.S. As of September 30, 2010, approximately 19,270 US ZAI PD Claims have been filed. In addition, on October 21, 2008, the Bankruptcy Court entered an order establishing August 31, 2009 as the bar date for ZAI PD Claims related to property located in Canada. Under the Amended Settlement, notwithstanding the Canadian ZAI PD Claims Bar Date of August 31, 2009, all Canadian ZAI PD Claimants who have filed a proof of claim by December 31, 2009, shall be entitled to seek compensation from the Canadian ZAI PD Claims Fund to be established pursuant to the Amended Settlement. As of September 30, 2010, approximately 14,100 Canadian ZAI PD Claims have been filed. The Joint Plan provides for the channeling of US ZAI PD Claims and Canadian ZAI PD Claims to the Asbestos PD Trust created under the Joint Plan, and the subsequent transfer of Canadian ZAI PD Claims to a Canadian fund. No bar date has been set for personal injury claims related to ZAI. The Joint Plan provides that ZAI PI Claims would be channeled to the Asbestos PI Trust created under the Joint Plan.

        Grace is continuing to analyze and review unresolved claims in relation to the Joint Plan. Grace believes that its recorded liabilities for claims subject to the March 31, 2003 bar date represent a reasonable estimate of the ultimate allowable amount for claims that are not in dispute or have been submitted with sufficient information to both evaluate the merit and estimate the value of the claim. The PD Claims are considered as part of Grace's overall asbestos liability and are being accounted for in accordance with the conditions precedent under the Prior Plan, as described in Note 3.

        Debt Capital    All of the Debtors' pre-petition debt is in default due to the Filing. The accompanying Consolidated Balance Sheets reflect the classification of the Debtors' pre-petition debt within "liabilities subject to compromise."

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

        On March 2, 2010, Grace terminated its debtor-in-possession (DIP) facility and replaced it with a $100 million cash-collateralized letter of credit facility with a commercial bank to support existing and new financial assurances.

        Accounting Impact    The accompanying Consolidated Financial Statements have been prepared in accordance with FASB ASC 852, "Financial Reporting by Entities in Reorganization Under the Bankruptcy Code". ASC 852 requires that financial statements of debtors-in-possession be prepared on a going concern basis, which contemplates continuity of operations and realization of assets and liquidation of liabilities in the ordinary course of business. However, as a result of the Filing, the realization of certain of the Debtors' assets and the liquidation of certain of the Debtors' liabilities are subject to significant uncertainty. While operating as debtors-in-possession, the Debtors may sell or otherwise dispose of assets and liquidate or settle liabilities for amounts other than those reflected in the Consolidated Financial Statements. Further, the ultimate plan of reorganization could materially change the amounts and classifications reported in the Consolidated Financial Statements.

        Pursuant to ASC 852, Grace's pre-petition and future liabilities that are subject to compromise are required to be reported separately on the balance sheet at an estimate of the amount that will ultimately be allowed by the Bankruptcy Court. As of September 30, 2010, such pre-petition liabilities include fixed obligations (such as debt and contractual commitments), as well as estimates of costs related to contingent liabilities (such as asbestos-related litigation, environmental remediation and other claims). Obligations of Grace subsidiaries not covered by the Filing continue to be classified on the Consolidated Balance Sheets based upon maturity dates or the expected dates of payment. ASC 852 also requires separate reporting of certain expenses, realized gains and losses, and provisions for losses related to the Filing as reorganization items. Grace presents reorganization items as "Chapter 11 expenses, net of interest income," a separate caption in its Consolidated Statements of Operations.

        As discussed in Note 3, Grace has not adjusted its accounting for asbestos-related assets or liabilities to reflect the Joint Plan.

        Grace has not recorded the benefit of any assets that may be available to fund asbestos-related and other liabilities under the Fresenius Settlement and the Sealed Air Settlement, as under the Joint Plan, these assets will be transferred to the PI Trust and the PD Trust. The estimated fair value available under the Fresenius Settlement and the Sealed Air Settlement as measured at September 30, 2010, was $1,297.0 million comprised of $115.0 million in cash from Fresenius and $1,182.0 million in cash and stock from Cryovac under the Joint Plan. Payments under the Sealed Air Settlement will be made directly to the PI Trust and the PD Trust by Cryovac.

        Grace's Consolidated Balance Sheets separately identify the liabilities that are "subject to compromise" as a result of the Chapter 11 proceedings. In Grace's case, "liabilities subject to compromise" represent both pre-petition and future liabilities as determined under U.S. GAAP. Changes to pre-petition liabilities subsequent to the Filing Date reflect: (1) cash payments under approved court orders; (2) the terms of the Prior Plan, as discussed above and in Note 3, including the accrual of interest on pre-petition debt and other fixed obligations; (3) accruals for employee-related programs; and (4) changes in estimates related to other pre-petition contingent liabilities. The accounting for the asbestos-related liability component of "liabilities subject to compromise" is described in Note 3.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

Components of liabilities subject to compromise are as follows:

        Note that the unfunded special pension arrangements reflected above exclude non-U.S. pension plans and qualified U.S. pension plans that became underfunded subsequent to the Filing. Contributions to qualified U.S. pension plans are subject to Bankruptcy Court approval.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

Change in Liabilities Subject to Compromise

        The following table is a reconciliation of the changes in pre-filing date liability balances for the period from the Filing Date through September 30, 2010.

        Additional liabilities subject to compromise may arise due to the rejection of executory contracts or unexpired leases, or as a result of the Bankruptcy Court's allowance of contingent or disputed claims.

        For the holders of pre-petition bank credit facilities, beginning January 1, 2006, Grace agreed to pay interest on pre-petition bank debt at the prime rate, adjusted for periodic changes, and compounded quarterly. The effective rate for the nine month periods ended September 30, 2010 and 2009 was 3.25%. From the Filing Date through December 31, 2005, Grace accrued interest on pre-petition bank debt at a negotiated fixed annual rate of 6.09%, compounded quarterly. The general unsecured creditors that hold pre-petition bank credit facilities have asserted that they are entitled to post-petition interest at the default rate specified under the terms of the underlying credit agreements which, if paid, would be approximately $110 million greater than the interest currently accrued. Grace has asserted that such creditors are not entitled to interest at the default rate and has requested the Bankruptcy Court to determine the appropriate rate at which interest would be payable.

        For the holders of claims who, but for the Filing, would be entitled under a contract or otherwise to accrue or be paid interest on such claim in a non-default (or non-overdue payment) situation under applicable non-bankruptcy law, Grace accrues interest at the rate provided in the contract between the Grace entity and the claimant or such rate as may otherwise apply under applicable non-bankruptcy law.

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)

        For all other holders of allowed general unsecured claims, Grace accrues interest at a rate of 4.19% per annum, compounded annually, unless otherwise negotiated during the claim settlement process.

Chapter 11 Expenses

        Pursuant to ASC 852, interest income earned on the Debtors' cash balances must be offset against Chapter 11 expenses.

Condensed Financial Information of the Debtors

W. R. Grace & Co.—Chapter 11 Filing Entities
Debtor-in-Possession Statements of Operations

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Notes to Consolidated Financial Statements (Continued)

2. Chapter 11 Information (Continued)