EXHIBIT 10.1

      

      

      

      VOTING AGREEMENT

    

    

    This Voting Agreement (this “Agreement”) is made and entered into as of April 26, 2021 (the “Agreement Date”), by and
      between W. R. Grace & Co., a Delaware corporation (the “Company”), and the stockholder of the Company listed on Schedule A and the signature pages hereto (the “Stockholder”). 
      Each of the Company and the Stockholder is sometimes referred to as a “Party.”

    

    

    RECITALS

    

    

    A.          Concurrently with the execution and delivery of this Agreement, Gibraltar Acquisition Holdings LLC, a Delaware limited liability company (“Parent”),
      Gibraltar Merger Sub Inc., a Delaware corporation and wholly owned subsidiary of Parent (“Merger Sub”), and the Company are entering into an Agreement and Plan of Merger (as amended, supplemented or modified
      from time to time, the “Merger Agreement”) that, among other things and subject to the terms and conditions set forth therein, provides for the merger of Merger Sub with and into the Company, with the Company
      being the surviving entity in such merger (the “Merger”).

    

    

    B.          As of the Agreement Date, the Stockholder is the record or “beneficial owner” (within the meaning of Rule 13d-3 under the Exchange Act) of the number of shares of common stock, par value
      $0.01 per share, of the Company (the “Company Common Stock”) set forth next to such Stockholder’s name on Schedule A hereto, being all of the shares of Company
      Common Stock owned of record or beneficially by such Stockholder as of the Agreement Date (the “Owned Shares”, and the Owned Shares together with any additional shares of Company Common Stock that such
      Stockholder may acquire record or beneficial ownership of after the Agreement Date, such Stockholder’s “Covered Shares”).

    

    

    C.          As an inducement and condition to the Company’s willingness to enter into the Merger Agreement, the Stockholder has agreed to enter into this Agreement with respect to the Stockholder’s
      Covered Shares.

    

    

    NOW, THEREFORE, in consideration of the foregoing and the respective representations, warranties, covenants and agreements set forth below and for other good and valuable consideration, the receipt
      and sufficiency of which are hereby acknowledged, the Parties, intending to be legally bound, do hereby agree as follows:

    

    

    1.          Definitions. Capitalized terms used but not otherwise defined herein shall have the respective meanings ascribed to such terms in the Merger Agreement. When used in this Agreement,
      the following terms shall have the meanings assigned to them in this Section 1.

    

    

    1.1.          “Expiration Time” shall mean with respect to the Stockholder’s obligations hereunder in respect of the Merger Agreement and the Merger, the
      earlier to occur of (i) such date and time as the Merger Agreement shall be validly terminated pursuant to Article VIII thereof and (ii) the receipt of the Company Stockholder Approval.

    

    

    1.2.          “Transfer” shall mean (a) any direct or indirect offer, sale, assignment, encumbrance, pledge, hypothecation, tender, hedge, disposition, or
      other transfer (by operation of law or otherwise), either voluntary or involuntary, or entry into any option or other Contract, arrangement or understanding with respect to any offer, sale, assignment, encumbrance, pledge, hypothecation, tender,
      hedge, disposition or other transfer (by operation of law or otherwise), of any Covered Shares or any interest in any Covered Shares (in each case other than this Agreement), (b) creating or permitting to exist any Liens, other than Liens arising
      under or imposed by applicable securities Law or pursuant to this Agreement or the Merger Agreement (the “Permitted Liens”), (c) the deposit of such Covered Shares into a voting trust, the entry into a voting
      agreement or arrangement (other than this Agreement) with respect to such Covered Shares or the grant of any proxy, power of attorney or other authorization (other than this Agreement or pursuant to Section 3.3 of this Agreement) with respect
      to such Covered Shares, or (d) any Contract or commitment (whether or not in writing) to take any of the actions referred to in the foregoing clauses (a), (b) or (c) above.

    
      
        


    

    
    2.          Agreement to Not Transfer the Covered Shares.  Until the Expiration Time, the Stockholder agrees not to Transfer or cause or permit the Transfer of any of such Stockholder’s
      Covered Shares; provided, however, that the foregoing shall not prohibit Transfers (i) between such Stockholder and any controlled Affiliate of such Stockholder or (ii) to a trust for the benefit of, and controlled by, such
      Stockholder, in each case so long as, (a) prior to and as a condition to the effectiveness of any such Transfer, such Affiliate or transferee executes and delivers to the Company a joinder to this Agreement in the form attached hereto as Annex A
      and (b) such Transfers do not reduce the aggregate beneficial ownership (as defined pursuant to Section 13(d) of the Exchange Act) of the Stockholder.  Any Transfer or attempted Transfer of any Covered Shares in violation of this Section 2
      shall be null and void and of no effect whatsoever.

    

    

    3.          Agreement to Vote the Covered Shares.

    

    

    3.1.          Voting Agreement. Until the Expiration Time, at every meeting of the Company’s stockholders at which any of the following matters are to be voted on (and at every adjournment
      or postponement thereof), and on any action or approval of the Company’s stockholders by written consent with respect to any of the following matters, the Stockholder unconditionally and irrevocably agrees to vote (including via proxy) all of such
      Stockholder’s Covered Shares (or cause the holder of record on any applicable record date to vote (including via proxy) all of such Stockholder’s Covered Shares) unless the Merger Agreement has been validly terminated pursuant to Article VIII thereof
      in favor of (X) the adoption of the Merger Agreement and the approval of the transactions contemplated thereby, including the Merger, (Y) the adjournment of the Company Stockholders Meeting if necessary (i) to solicit proxies in favor of the adoption
      of the Merger Agreement and the consummation of the transactions contemplated thereby or (ii) to ensure that any necessary supplement or amendment to the Proxy Statement is provided to the holders of Company Common Stock sufficiently in advance of a
      vote on the Merger Agreement, and (Z) any other matter or action necessary to the consummation of the Merger.

    

    

    3.2.          Quorum. Until the Expiration Time, at every meeting of the Company’s stockholders (and at every adjournment or postponement thereof), the Stockholder shall be represented in
      attendance or by proxy at such meeting (or cause the holders of record on any applicable record date to be represented in attendance or by proxy at such meeting) in order for the Covered Shares to be counted as present for purposes of establishing a
      quorum.

    

    

    3.3.          Return of Proxy. The Stockholder shall execute and deliver (or cause the holders of record to execute and deliver), within five (5) Business Days of receipt, any proxy card or
      voting instructions it receives that is sent to stockholders of the Company soliciting proxies with respect to any matter described in Section 3.1, which shall be voted in the manner described in Section 3.1 (with the Company to be
      promptly notified of such execution and delivery of such proxy card or voting instructions).

    
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    4.          Waiver of Appraisal Rights. The Stockholder hereby irrevocably waives all appraisal rights under Section 262 of the DGCL with respect to all of such Stockholder’s Covered Shares
      owned (beneficially or of record) by such Stockholder, a copy of which is attached hereto as Exhibit A, with respect to the Merger and the transactions contemplated by the Merger Agreement.

    

    

    5.          New Shares.  The Stockholder agrees that any Covered Shares that such Stockholder purchases or with respect to which such Stockholder otherwise acquires record or beneficial
      ownership (including pursuant to a stock split, reverse stock split, stock dividend or distribution or any change in Company Common Stock by reason of any recapitalization, reorganization, combination, reclassification, exchange of shares or similar
      transaction) after the Agreement Date and prior to the Expiration Time shall be subject to the terms and conditions of this Agreement to the same extent as if they comprised the Owned Shares.

    

    

    6.          Representations and Warranties of the Stockholder. The Stockholder hereby represents and warrants to the Company that:

    

    

    6.1.          Due Authority. The Stockholder has all requisite power and capacity to make, enter into and carry out the terms of this Agreement. The Stockholder is duly organized, validly
      existing and in good standing in accordance with the laws of its jurisdiction of formation.  The Stockholder’s execution and delivery of this Agreement, the Stockholder’s performance of its obligations hereunder, and the consummation of the
      transactions contemplated hereby have been validly authorized by the Stockholder, and no other action on the part of the Stockholder is necessary to authorize the execution and delivery of this Agreement by the Stockholder, the performance of the
      Stockholder’s obligations hereunder or the consummation of the transactions contemplated hereby. This Agreement has been duly and validly executed and delivered by the Stockholder and constitutes a valid and binding obligation of the Stockholder
      enforceable against it in accordance with its terms, subject to the Bankruptcy and Equity Exceptions.

    

    

    6.2.          Ownership of the Covered Shares. Except as disclosed in the Schedule 13D prior to the date of this Agreement (a) the Stockholder is, as of the Agreement Date, the beneficial or
      record owner of such Stockholder’s Covered Shares, free and clear of any and all Liens, other than Permitted Liens, and (b) the Stockholder has sole voting power over all of the Covered Shares beneficially owned by the Stockholder. The Stockholder
      has not entered into, and the Covered Shares are not subject to, any agreement to Transfer any Covered Shares, except where such Transfer is not prohibited by this Agreement. As of the Agreement Date, the Stockholder does not own, beneficially or of
      record, any shares of Company Common Stock or other voting shares of the Company (or any securities convertible, exercisable or exchangeable for, or rights to purchase or acquire, any shares of Company Common Stock or other voting shares of the
      Company) other than the Owned Shares.

    

    

    6.3.          No Conflict; Consents.

    

    

    a.          The execution and delivery of this Agreement by the Stockholder does not, and the performance by the Stockholder of its obligations under this Agreement and the compliance by the
      Stockholder with the provisions hereof do not and will not: (a) conflict with or violate any Laws applicable to the Stockholder, or (b) conflict with, result in any breach of or constitute a default (or an event that with notice or lapse of time or
      both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation of, or result in the creation of a Lien on any of the Covered Shares beneficially owned by the Stockholder pursuant to any
      Contract, organizational document or obligation to which the Stockholder is a party or by which the Stockholder is subject.

    
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    b.          No consent, approval, order or authorization of, or registration, declaration or, (except as required by the rules and regulations promulgated under the Exchange Act, the Securities Act,
      or state securities, takeover and “blue sky” laws) filing with, any Governmental Entity or any other Person, is required by or with respect to the Stockholder in connection with the execution and delivery of this Agreement or the consummation by the
      Stockholder of the transactions contemplated hereby, except as would not, individually or in the aggregate, reasonably be expected to prevent, materially delay or materially impair the ability of the Stockholder to perform the Stockholder’s
      obligations under this Agreement or to consummate the transactions contemplated by this Agreement.

    

    

    6.4.          Absence of Litigation. As of the Agreement Date, there is no legal action pending against, or, to the knowledge of the Stockholder, threatened in writing against or affecting the
      Stockholder that would reasonably be expected, individually or in the aggregate, to prevent or materially delay or materially impair the ability of the Stockholder to perform its obligations hereunder or to consummate the transactions contemplated
      hereby on a timely basis.

    

    

    6.5.          No Other Representations or Warranties. Except for the representations and warranties made by the Stockholder in this Section 6, and, if applicable, in the Merger
      Agreement, the Equity Commitment Letter and the Guaranty, the Stockholder does not make any express or implied representation or warranty to the Company in connection with this Agreement and the transactions contemplated by this Agreement and the
      Stockholder expressly disclaims any such other representations or warranties.  For the avoidance of doubt, this Section 6.5 shall not limit any of the representations and warranties made in the Merger Agreement, the Equity Commitment Letter
      or the Guaranty.

    

    

    7.          Representations and Warranties of the Company. The Company hereby represents and warrants to the Stockholder that:

    

    

    7.1.          Due Authority. The Company has all requisite power and capacity to make, enter into and carry out the terms of this Agreement. The Company is duly organized, validly existing and
      in good standing in accordance with the laws of its jurisdiction of formation. The Company’s execution and delivery of this Agreement, the Company’s performance of its obligations hereunder, and the consummation of the transactions contemplated
      hereby have been validly authorized by the Company, and no other action on the part of the Company is necessary to authorize the execution and delivery of this Agreement by the Company, the performance of the Company’s obligations hereunder, or the
      consummation of the transactions contemplated hereby. This Agreement has been duly and validly executed and delivered by the Company and constitutes a valid and binding obligation of the Company enforceable against it in accordance with its terms,
      subject to the Bankruptcy and Equity Exceptions.

    

    

    7.2.          No Conflict; Consents.

    
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    a.          The execution and delivery of this Agreement by the Company does not, and the performance by the Company of its obligations under this Agreement and the compliance by the Company with
      the provisions hereof do not and will not: (a) conflict with or violate any Laws applicable to the Company, or (b) conflict with, result in any breach of or constitute a default (or an event that with notice or lapse of time or both would become a
      default) under, or give to others any rights of termination, amendment, acceleration or cancellation, pursuant to any Contract, organizational document or obligation to which the Company is a party or by which the Company is subject.

    

    

    b.          No consent, approval, order or authorization of, or registration, declaration or, (except as required by the rules and regulations promulgated under the Exchange Act, the Securities Act,
      or state securities, takeover and “blue sky” laws) filing with, any Governmental Entity or any other Person, is required by or with respect to the Company in connection with the execution and delivery of this Agreement or the consummation by the
      Company of the transactions contemplated hereby, except as would not, individually or in the aggregate, reasonably be expected to prevent, materially delay or materially impair the ability of the Company to perform the Company’s obligations under
      this Agreement or to consummate the transactions contemplated by this Agreement.

    

    

    7.3.          Absence of Litigation. As of the Agreement Date, there is no legal action pending against, or, to the knowledge of the Company, threatened in writing against or affecting the
      Company that would reasonably be expected, individually or in the aggregate, to prevent or materially delay or materially impair the ability of the Company to perform its obligations hereunder or to consummate the transactions contemplated hereby on
      a timely basis.

    

    

    7.4.          No Other Representations or Warranties. Except for the representations and warranties made by the Company in this Section 7 and the Merger Agreement, the Company does not
      make any express or implied representation or warranty to the Stockholder in connection with this Agreement and the transactions contemplated by this Agreement and the Company expressly disclaims any such other representations or warranties.  For the
      avoidance of doubt, this Section 7.4 shall not limit any of the representations and warranties made in the Merger Agreement.

    

    

    8.          Miscellaneous.

    

    

    8.1.          Other Agreements. The Company and the Stockholder agree not to take any action that would restrict, limit or interfere with the performance of its obligations hereunder.  The
      Company and the Stockholder agree not to (i) challenge the validity of or seek to enjoin the operation of any provision of this Agreement or (ii) allege that the execution and delivery of this Agreement by the Company or such Stockholder, either
      alone or together with any other Company voting agreements and proxies to be delivered in connection with the execution of the Merger Agreement, or the approval of the Merger Agreement by the Company Board, breaches any fiduciary duty of the Company
      Board or any member thereof.

    

    

    8.2.          No Ownership Interest. Nothing contained in this Agreement shall be deemed to vest in the Company any direct or indirect ownership or incidence of ownership of or with respect to
      the Covered Shares. All rights, ownership and economic benefits of and relating to the Covered Shares shall remain vested in and belong to the Stockholder, and the Company shall have no authority to direct the Stockholder in the voting or disposition
      of any of the Covered Shares, except as otherwise provided herein.

    

    

    8.3.          Certain Adjustments. In the event of a stock split, stock dividend or distribution, or any change in the Company Common Stock by reason of any split-up, reverse stock split,
      recapitalization, combination, reclassification, exchange of shares or the like, the terms “Company Common Stock” and “Covered Shares” shall be deemed to refer to and include such shares as well as all such stock dividends and distributions and any
      securities into which or for which any or all of such shares may be changed or exchanged or which are received in such transaction.

    
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    8.4.          Amendments and Modifications. This Agreement may not be modified, amended, altered or supplemented except upon the execution and delivery of a written agreement executed by all
      of the Parties.

    

    

    8.5.          Expenses. All costs and expenses incurred by any Party in connection with this Agreement shall be paid by the Party incurring such cost or expense.

    

    

    8.6.          Notices. All notices and other communications under this Agreement shall be in writing and shall be deemed given (a) when delivered personally by hand (with written confirmation
      of receipt by other than automatic means, whether electronic or otherwise), (b) when sent by facsimile or email (with written confirmation of transmission) or (c) one (1) Business Day following the day sent by an internationally recognized overnight
      courier (with written confirmation of receipt), in each case, at the following addresses, facsimile numbers and email addresses (or to such other address, facsimile number or email address as a Party may have specified by notice given to the other
      Party pursuant to this provision):

    

    

    to the Stockholder, to the address for notice set forth on Schedule A hereto, with a copy to:

    

    

    
      	
               

            	
              Sullivan & Cromwell LLP

            
	
               

            	
              
                125 Broad Street

              

            
	
               

            	
              New York, NY 10004

            
	
               

            	Attention:  

            	
              Matthew G. Hurd

            
	
               

            	
               

            	
              
                Scott B. Crofton

              

            
	
               

            	Email:	
              hurdm@sullcrom.com

            
	
               

            	
               

            	
              
                croftons@sullcrom.com

              

            
	
               

            	
              
                
                  
                    to the Company, to:

                  

                

              

            	
               

            	
               

            
	 	 	 
	
               

            	
              W. R. Grace & Co.

            
	
               

            	
              7500 Grace Drive

            
	
               

            	
              Columbia, MD 21044

            
	
               

            	Attention:	
              Cherée Johnson, Senior Vice President, General Counsel, and Secretary

            
	
               

            	Email:	Cheree.Johnson@grace.com
	
               

            	
               

            	
               

            
	 	
              with a copy (which shall not constitute notice) to:

            
	 	 	 
	 	
              Wachtell, Lipton, Rosen & Katz

            
	 	
              51 West 52nd Street

            
	 	
              New York, NY  10019

            
	 	Attention:	
              Andrew R. Brownstein, Esq.

            
	 	 	
              Gregory E. Ostling, Esq.

            
	 	 	
              Mark A. Stagliano, Esq.

            
	 	Email:	
              ARBrownstein@wlrk.com

            
	 	 	
              GEOstling@wlrk.com

            
	 	 	
              MAStagliano@wlrk.com

            


    

    
      

      

    

    
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    8.7.          Jurisdiction; Venue.

    

    

    a.          All Claims arising from, under or in connection with this Agreement or any of the transactions contemplated by this Agreement shall be raised to and exclusively determined by the
      Delaware Court of Chancery and any state appellate court therefrom within the State of Delaware (or, if the Delaware Court of Chancery declines to accept jurisdiction over a particular matter, any state or federal court within the State of Delaware),
      to whose jurisdiction and venue the Parties irrevocably and unconditionally consent and submit.  Each Party hereby irrevocably and unconditionally waives any objection to the laying of venue of Claim arising out of this Agreement or any of the
      transactions contemplated by this Agreement in such court and hereby further irrevocably and unconditionally waives and agrees not to plead or claim in any such court that any such Claim brought in any such court has been brought in an inconvenient
      forum.  Each Party further agrees that service of any process, summons, notice or document by U.S. registered mail to the respective addresses set forth in Section 8.6 or on Schedule A shall be effective service of process for any
      Claim brought against such Party in any such court.

    

    

    b.          Each of the Parties (a) irrevocably consents to submit itself, and hereby irrevocably submits itself, to the personal jurisdiction of the Court of Chancery of the State of Delaware and
      any federal court located in the State of Delaware, or, if neither of such courts has subject matter jurisdiction, any state court of the State of Delaware having subject matter jurisdiction, in the event any dispute arises out of this Agreement or
      any of the transactions contemplated by this Agreement, (b) irrevocably agrees that it will not attempt to deny or defeat such personal jurisdiction by motion or other request for leave from any such court, and agrees not to plead or claim any
      objection to the laying of venue in any such court or that any judicial proceeding in any such court has been brought in an inconvenient forum, (c) irrevocably agrees that it will not bring any action relating to this Agreement or any of the
      transactions contemplated by this Agreement in any court other than the Court of Chancery of the State of Delaware and any federal court located in the State of Delaware, or, if neither of such courts has subject matter jurisdiction, any state court
      of the State of Delaware having subject matter jurisdiction, and (d) irrevocably consents to service of process being made through the notice procedures set forth in Section 8.6.

    

    

    8.8.          WAIVER OF JURY TRIAL.  EACH PARTY HEREBY WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY SUIT, ACTION OR
      OTHER PROCEEDING ARISING OUT OF THIS AGREEMENT.  EACH PARTY CERTIFIES AND ACKNOWLEDGES (A) THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH PARTY WOULD NOT, IN THE EVENT OF ANY ACTION,
      SUIT OR PROCEEDING, SEEK TO ENFORCE THE FOREGOING WAIVER, (B) IT UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF SUCH WAIVERS AND (C) THAT IT AND THE OTHER PARTIES HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL
      WAIVER AND CERTIFICATIONS IN THIS SECTION 8.8.

    
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    8.9.          Documentation and Information. The Company and the Stockholder consent to and authorize the publication and disclosure by Parent, the Stockholder and the Company of such
      Stockholder’s holding of the Covered Shares, and the terms of this Agreement (including, for the avoidance of doubt, the disclosure of this Agreement), in any press release, the Proxy Statement and any other disclosure document required in connection
      with the Merger Agreement, the Merger and the other transactions contemplated by the Merger Agreement.

    

    

    8.10.          Further Assurances.  From time to time and without additional consideration, the Stockholder shall execute and deliver, or cause to be executed and delivered, such additional
      instruments, and shall use reasonable best efforts to take, or cause to be taken, all such further actions, as the Company may reasonably request for the purpose of carrying out this Agreement.

    

    

    8.11.          Stop Transfer Instructions. At all times commencing with the execution and delivery of this Agreement and continuing until the Expiration Time, in furtherance of this Agreement,
      the Stockholder hereby authorizes the Company or its counsel to notify the Company’s transfer agent that there is a stop transfer order with respect to all of the Covered Shares (and that this Agreement places limits on the voting and transfer of the
      Covered Shares), subject to the provisions hereof and provided that any such stop transfer order and notice will be withdrawn and terminated by the Company immediately following the Expiration Time.

    

    

    8.12.          Enforcement. The Parties acknowledge and agree that irreparable damage for which monetary damages, even if available, would not be an adequate remedy, would occur in the event
      that any Party does not perform any of the provisions of this Agreement in accordance with their specific terms or otherwise breach or threaten to breach any such provisions.  It is accordingly agreed that the Parties shall be entitled to an
      injunction, specific performance and other equitable relief to prevent breaches or threatened breaches of this Agreement and to enforce specifically the performance of terms and provisions of this Agreement, without proof of actual damages (and each
      Party hereby waives any requirement for the securing or posting of any bond in connection with such remedy), this being in addition to any other remedy to which they are entitled at law or in equity.  The Parties further agree not to assert that a
      remedy of specific enforcement is unenforceable, invalid, contrary to Law or inequitable or not appropriate for any reason, nor to assert that a remedy of monetary damages would provide an adequate remedy for any such breach.

    

    

    8.13.          Entire Agreement. This Agreement, taken together with the Merger Agreement, the Company Disclosure Schedule, the Equity Commitment Letter, the Guaranty and the Confidentiality
      Agreement, constitutes the entire agreement, and supersedes all prior agreements and understandings, both written and oral, between or among the Parties with respect to the subject matter hereof.  For the avoidance of doubt, nothing in this Agreement
      shall be deemed to amend, alter or modify, in any respect, any of the provisions of the Merger Agreement, the Company Disclosure Schedule, the Equity Commitment Letter, the Guaranty or the Confidentiality Agreement.

    

    

    8.14.          Interpretation. When a reference is made in this Agreement to a Section, such reference shall be to a Section of this Agreement unless otherwise indicated. Headings contained in
      this Agreement are for reference purposes only and shall not affect in any way the meaning or interpretation of this Agreement. Whenever the words “include,” “includes” or “including” are used herein, they shall be deemed to be followed by the words
      “without limitation.”  When used in this Agreement, the term “or” shall be construed in the inclusive sense of “and/or”. The words “hereof,” “hereto,” “hereby,” “herein” and “hereunder” and words of similar import when
        used herein shall refer to this Agreement as a whole and not to any particular provision of this Agreement.  Any agreement, instrument or statute defined or referred to herein or in any agreement or instrument that is referred to herein
      means such agreement, instrument or statute as from time to time amended, modified or supplemented, including (in the case of agreements or instruments) by waiver or consent and (in the case of statutes) by succession of comparable successor statutes
      and references to all attachments thereto and instruments incorporated therein. References to a Person are also to its permitted successors and assigns. The Parties hereto agree that they have been represented by counsel during the negotiation,
      drafting, preparation and execution of this Agreement and, therefore, waive the application of any Law or rule of construction providing that ambiguities in an agreement or other document will be construed against the party drafting such agreement or
      document.

    
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    8.15.          Assignment. Neither this Agreement nor any of the rights, interests or obligations under this Agreement shall be assigned, in whole or in part, by operation of Law or otherwise,
      by any of the Parties without the prior written consent of the other Parties.  Any purported assignment without such consent shall be void.  This Agreement will be binding upon, inure to the benefit of, and be enforceable by, the Parties and their
      respective successors and permitted assigns.

    

    

    8.16.          Severability.  If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any rule or Law, or public policy, all other conditions and
      provisions of this Agreement shall nevertheless remain in full force and effect so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to any Party or such Party waives its
      rights under this Section 8.16 with respect thereto.  Upon any determination that any term or other provision is invalid, illegal or incapable of being enforced, the Parties shall negotiate in good faith to modify this Agreement so as to
      effect the original intent of the Parties as closely as possible in an acceptable manner to the end that transactions contemplated by this Agreement are fulfilled to the extent possible.

    

    

    8.17.          Counterparts. This Agreement may be executed in one or more counterparts (including by means of facsimile or email in .pdf format), all of which shall be considered one and the
      same agreement, and shall become effective when one or more counterparts have been signed by each of the Parties and delivered to the other Parties.

    

    

    8.18.          Governing Law. This Agreement and all Claims or causes of action of the Parties (whether in contract or in tort or otherwise, or whether at law (including at common law or by
      statute) or in equity) that may be based on, arise out of or relate to this Agreement or the negotiation, execution, due diligence, performance or subject matter thereof, shall be governed by and construed in accordance with the Laws of the State of
      Delaware, without regard to principles of conflict of laws thereof or of any other jurisdiction.

    

    

    8.19.          Non-survival of Representations and Warranties. None of the representations and warranties in this Agreement or in any schedule, certificate, instrument or other document
      delivered pursuant to this Agreement shall survive the Effective Time or the termination of this Agreement. This Section 8.19 shall not limit any covenant or agreement contained in this Agreement that by its terms is to be performed in whole
      or in part after the Effective Time or the termination of this Agreement.

    
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    8.20.          No Third Party Beneficiaries.  Each Party hereby agrees that its respective representations, warranties and covenants set forth in this Agreement are solely for the benefit of
      the other Parties on the terms and subject to the conditions set forth in this Agreement, and this Agreement is not intended to, and does not, confer upon any Person other than the Parties and their respective successors, legal representatives and
      permitted assigns any rights or remedies, express or implied, hereunder, including the right to rely upon the representations and warranties set forth in this Agreement.

    

    

    8.21.          Termination. This Agreement shall automatically terminate without further action by any of the parties hereto and shall have no further force or effect as of the Expiration
      Time; provided that the provisions of this Section 8 shall survive any such termination. Notwithstanding the foregoing, termination of this Agreement shall not prevent any Party from seeking any remedies (at law or in equity) against
      any other Party for that Party’s breach of any of the terms of this Agreement prior to the date of termination.

    

    

    [Signature page follows]

    
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    IN WITNESS WHEREOF, the Parties have caused this Agreement to be duly executed and delivered on the date and year first above written.

    

    

    
      	 	
              W. R. GRACE & CO.

            
	 	 	 
	
               

            	By:

            	
              /s/ Hudson La Force

            
	
               

            	 	Name:

            	Hudson La Force
	
               

            	 	Title:

            	 President and Chief Executive Officer


       

      

      
        [Signature page follows]

      

    

    
      
        


    

    
      

      

      
        	 	
                
                  40 NORTH LATITUDE MASTER FUND LTD.

                

              
	 	 	 
	
                 

              	By:

              	
                /s/ David J. Millstone

              
	
                 

              	 	Name:

              	David J. Millstone
	
                 

              	 	Title:

              	 Director


      

    

    
      

      

      
        	 	
                

                

              
	 	 	 
	
                 

              	By:

              	
                /s/ David S. Winter

              
	
                 

              	 	Name:

              	 David S. Winter
	
                 

              	 	Title:

              	Director


      

    

    

    

    
      [Signature page follows]

    

    
      
        


    

    Schedule A

    	 	 	 
	
            Name

          	
            Address

             

            

          	
            Owned Shares*

          
	
            40 North Latitude Master Fund Ltd.

          	
            9 West 57th Street,

             47th Floor

             New York, NY 10019

          	
            9,865,008

          


    

    

    *If any additional shares of Company Common Stock are owned by the Stockholder as of the Agreement Date, such shares shall be automatically deemed to be “Owned Shares” notwithstanding the contents of this Schedule A.

    
      
        


    

    ANNEX A

    

    

    ANNEX A

    

    

    FORM OF JOINDER

    

    

    This Joinder Agreement (this “Joinder Agreement”) is made as of the date written below by the undersigned (the “Joining Party”) in accordance with the Voting Agreement dated as of April 26, 2021 (the “Voting Agreement”) by and among Company and the stockholders of the Company that are party thereto as the same may be amended, supplemented or otherwise modified from time to time.  Capitalized terms used herein and not
      otherwise defined shall have the meaning ascribed to them in the Voting Agreement.

    

    

    The Joining Party hereby acknowledges, agrees and confirms that, by its execution of this Joinder Agreement, the Joining Party shall be deemed to be a party to, and a “Stockholder” under, the Voting Agreement as of the
      date hereof and shall have all of the rights and obligations, and confirms each representation and warranty, of a “Stockholder” with the same force and effect as if it had executed the Voting Agreement (except that each reference to the Agreement
      Date in Section 6 (Representations and Warranties of the Stockholder) of the Voting Agreement shall be deemed a reference to the date hereof).  The Joining Party hereby ratifies, as of the date hereof,
      and agrees to be bound by, all of the terms, provisions and conditions contained in the Voting Agreement.

    

    

    The Voting Agreement shall continue and remain in full force and effect as in effect prior to the date hereof.  The provisions of Section 8 (Miscellaneous) of the Voting Agreement
      shall apply to this Joinder Agreement, mutatis mutandis.

    

    

    IN WITNESS WHEREOF, the undersigned has duly executed this Joinder Agreement as of the date written below.

    

    

    Date: [•] [•], 2021

    	 	
            By:

          	 
	 	 	
            Name:

          
	 	 	
            Title:

          
	 	 	 
	 	
            Address for Notices:

          
	 	 
	 	 
	 	
            With copies to:

          


     

    

    
      
        


    

    ACCEPTED AND AGREED

    

    

    W. R. GRACE & CO.

    

    

    
      	By:

            	
               

            	
               

            
	
               

            	
              Name: 

              

            	
               

            
	
               

            	Title:

            	
               

            


    

    
      
        


    

    Exhibit A

    

    

    General Corporation Law of the State of Delaware, Section 262

    

    

    
      § 262. Appraisal rights.

      

      

    

    
      (a) Any stockholder of a corporation of this State who holds shares of stock on the date of the making of a demand pursuant to subsection (d) of this section with respect to such shares, who
        continuously holds such shares through the effective date of the merger or consolidation, who has otherwise complied with subsection (d) of this section and who has neither voted in favor of the merger or consolidation nor consented thereto in
        writing pursuant to § 228 of this title shall be entitled to an appraisal by the Court of Chancery of the fair value of the stockholder’s shares of stock under the circumstances described in subsections (b) and (c) of this section. As used in this
        section, the word “stockholder” means a holder of record of stock in a corporation; the words “stock” and “share” mean and include what is ordinarily meant by those words; and the words “depository receipt” mean a receipt or other instrument issued
        by a depository representing an interest in 1 or more shares, or fractions thereof, solely of stock of a corporation, which stock is deposited with the depository.

      

      

      (b) Appraisal rights shall be available for the shares of any class or series of stock of a constituent corporation in a merger or consolidation to be effected pursuant to § 251 (other than a merger
        effected pursuant to § 251(g) of this title), § 252, § 254, § 255, § 256, § 257, § 258, § 263 or § 264 of this title:

      

      

    

    
      (1) Provided, however, that no appraisal rights under this section shall be available for the shares of any class or series of stock, which stock, or depository receipts in respect thereof, at the
        record date fixed to determine the stockholders entitled to receive notice of the meeting of stockholders to act upon the agreement of merger or consolidation (or, in the case of a merger pursuant to § 251(h), as of immediately prior to the
        execution of the agreement of merger), were either: (i) listed on a national securities exchange or (ii) held of record by more than 2,000 holders; and further provided that no appraisal rights shall be available for any shares of stock of the
        constituent corporation surviving a merger if the merger did not require for its approval the vote of the stockholders of the surviving corporation as provided in § 251(f) of this title.

      

      

      (2) Notwithstanding paragraph (b)(1) of this section, appraisal rights under this section shall be available for the shares of any class or series of stock of a constituent corporation if the holders
        thereof are required by the terms of an agreement of merger or consolidation pursuant to §§ 251, 252, 254, 255, 256, 257, 258, 263 and 264 of this title to accept for such stock anything except:

      

      

    

    
      a. Shares of stock of the corporation surviving or resulting from such merger or consolidation, or depository receipts in respect thereof;

      

      

      b. Shares of stock of any other corporation, or depository receipts in respect thereof, which shares of stock (or depository receipts in respect thereof) or depository receipts at the effective date of
        the merger or consolidation will be either listed on a national securities exchange or held of record by more than 2,000 holders;

      

      

      c. Cash in lieu of fractional shares or fractional depository receipts described in the foregoing paragraphs (b)(2)a. and b. of this section; or

      

      

      d. Any combination of the shares of stock, depository receipts and cash in lieu of fractional shares or fractional depository receipts described in the foregoing paragraphs (b)(2)a., b. and c. of this
        section.

      
        
          


      

    

    
      (3) In the event all of the stock of a subsidiary Delaware corporation party to a merger effected under § 253 or § 267 of this title is not owned by the parent immediately prior to the merger, appraisal
        rights shall be available for the shares of the subsidiary Delaware corporation.

      

      

      (4) [Repealed.]

      

      

    

    
      (c) Any corporation may provide in its certificate of incorporation that appraisal rights under this section shall be available for the shares of any class or series of its stock as a result of an
        amendment to its certificate of incorporation, any merger or consolidation in which the corporation is a constituent corporation or the sale of all or substantially all of the assets of the corporation. If the certificate of incorporation contains
        such a provision, the provisions of this section, including those set forth in subsections (d),(e), and (g) of this section, shall apply as nearly as is practicable.

      

      

      (d) Appraisal rights shall be perfected as follows:

      

      

    

    
      (1) If a proposed merger or consolidation for which appraisal rights are provided under this section is to be submitted for approval at a meeting of stockholders, the corporation, not less than 20 days
        prior to the meeting, shall notify each of its stockholders who was such on the record date for notice of such meeting (or such members who received notice in accordance with § 255(c) of this title) with respect to shares for which appraisal rights
        are available pursuant to subsection (b) or (c) of this section that appraisal rights are available for any or all of the shares of the constituent corporations, and shall include in such notice a copy of this section and, if 1 of the constituent
        corporations is a nonstock corporation, a copy of § 114 of this title. Each stockholder electing to demand the appraisal of such stockholder’s shares shall deliver to the corporation, before the taking of the vote on the merger or consolidation, a
        written demand for appraisal of such stockholder’s shares; provided that a demand may be delivered to the corporation by electronic transmission if directed to an information processing system (if any) expressly designated for that purpose in such
        notice. Such demand will be sufficient if it reasonably informs the corporation of the identity of the stockholder and that the stockholder intends thereby to demand the appraisal of such stockholder’s shares. A proxy or vote against the merger or
        consolidation shall not constitute such a demand. A stockholder electing to take such action must do so by a separate written demand as herein provided. Within 10 days after the effective date of such merger or consolidation, the surviving or
        resulting corporation shall notify each stockholder of each constituent corporation who has complied with this subsection and has not voted in favor of or consented to the merger or consolidation of the date that the merger or consolidation has
        become effective; or

      

      

      (2) If the merger or consolidation was approved pursuant to § 228, § 251(h), § 253, or § 267 of this title, then either a constituent corporation before the effective date of the merger or consolidation
        or the surviving or resulting corporation within 10 days thereafter shall notify each of the holders of any class or series of stock of such constituent corporation who are entitled to appraisal rights of the approval of the merger or consolidation
        and that appraisal rights are available for any or all shares of such class or series of stock of such constituent corporation, and shall include in such notice a copy of this section and, if 1 of the constituent corporations is a nonstock
        corporation, a copy of § 114 of this title. Such notice may, and, if given on or after the effective date of the merger or consolidation, shall, also notify such stockholders of the effective date of the merger or consolidation. Any stockholder
        entitled to appraisal rights may, within 20 days after the date of giving such notice or, in the case of a merger approved pursuant to § 251(h) of this title, within the later of the consummation of the offer contemplated by § 251(h) of this title
        and 20 days after the date of giving such notice, demand in writing from the surviving or resulting corporation the appraisal of such holder’s shares; provided that a demand may be delivered to the corporation by electronic transmission if directed
        to an information processing system (if any) expressly designated for that purpose in such notice. Such demand will be sufficient if it reasonably informs the corporation of the identity of the stockholder and that the stockholder intends thereby
        to demand the appraisal of such holder’s shares. If such notice did not notify stockholders of the effective date of the merger or consolidation, either (i) each such constituent corporation shall send a second notice before the effective date of
        the merger or consolidation notifying each of the holders of any class or series of stock of such constituent corporation that are entitled to appraisal rights of the effective date of the merger or consolidation or (ii) the surviving or resulting
        corporation shall send such a second notice to all such holders on or within 10 days after such effective date; provided, however, that if such second notice is sent more than 20 days following the sending of the first notice or, in the case of a
        merger approved pursuant to § 251(h) of this title, later than the later of the consummation of the offer contemplated by § 251(h) of this title and 20 days following the sending of the first notice, such second notice need only be sent to each
        stockholder who is entitled to appraisal rights and who has demanded appraisal of such holder’s shares in accordance with this subsection. An affidavit of the secretary or assistant secretary or of the transfer agent of the corporation that is
        required to give either notice that such notice has been given shall, in the absence of fraud, be prima facie evidence of the facts stated therein. For purposes of determining the stockholders entitled to receive either notice, each constituent
        corporation may fix, in advance, a record date that shall be not more than 10 days prior to the date the notice is given, provided, that if the notice is given on or after the effective date of the merger or consolidation, the record date shall be
        such effective date. If no record date is fixed and the notice is given prior to the effective date, the record date shall be the close of business on the day next preceding the day on which the notice is given.

      
        
          


      

    

    
      (e) Within 120 days after the effective date of the merger or consolidation, the surviving or resulting corporation or any stockholder who has complied with subsections (a) and (d) of this section
        hereof and who is otherwise entitled to appraisal rights, may commence an appraisal proceeding by filing a petition in the Court of Chancery demanding a determination of the value of the stock of all such stockholders. Notwithstanding the
        foregoing, at any time within 60 days after the effective date of the merger or consolidation, any stockholder who has not commenced an appraisal proceeding or joined that proceeding as a named party shall have the right to withdraw such
        stockholder’s demand for appraisal and to accept the terms offered upon the merger or consolidation. Within 120 days after the effective date of the merger or consolidation, any stockholder who has complied with the requirements of subsections (a)
        and (d) of this section hereof, upon request given in writing (or by electronic transmission directed to an information processing system (if any) expressly designated for that purpose in the notice of appraisal), shall be entitled to receive from
        the corporation surviving the merger or resulting from the consolidation a statement setting forth the aggregate number of shares not voted in favor of the merger or consolidation (or, in the case of a merger approved pursuant to § 251(h) of this
        title, the aggregate number of shares (other than any excluded stock (as defined in § 251(h)(6)d. of this title)) that were the subject of, and were not tendered into, and accepted for purchase or exchange in, the offer referred to in § 251(h)(2)),
        and, in either case, with respect to which demands for appraisal have been received and the aggregate number of holders of such shares. Such statement shall be given to the stockholder within 10 days after such stockholder’s request for such a
        statement is received by the surviving or resulting corporation or within 10 days after expiration of the period for delivery of demands for appraisal under subsection (d) of this section hereof, whichever is later. Notwithstanding subsection (a)
        of this section, a person who is the beneficial owner of shares of such stock held either in a voting trust or by a nominee on behalf of such person may, in such person’s own name, file a petition or request from the corporation the statement
        described in this subsection.

      

      

      (f) Upon the filing of any such petition by a stockholder, service of a copy thereof shall be made upon the surviving or resulting corporation, which shall within 20 days after such service file in the
        office of the Register in Chancery in which the petition was filed a duly verified list containing the names and addresses of all stockholders who have demanded payment for their shares and with whom agreements as to the value of their shares have
        not been reached by the surviving or resulting corporation. If the petition shall be filed by the surviving or resulting corporation, the petition shall be accompanied by such a duly verified list. The Register in Chancery, if so ordered by the
        Court, shall give notice of the time and place fixed for the hearing of such petition by registered or certified mail to the surviving or resulting corporation and to the stockholders shown on the list at the addresses therein stated. Such notice
        shall also be given by 1 or more publications at least 1 week before the day of the hearing, in a newspaper of general circulation published in the City of Wilmington, Delaware or such publication as the Court deems advisable. The forms of the
        notices by mail and by publication shall be approved by the Court, and the costs thereof shall be borne by the surviving or resulting corporation.

      
        
          


      

      (g) At the hearing on such petition, the Court shall determine the stockholders who have complied with this section and who have become entitled to appraisal rights. The Court may require the
        stockholders who have demanded an appraisal for their shares and who hold stock represented by certificates to submit their certificates of stock to the Register in Chancery for notation thereon of the pendency of the appraisal proceedings; and if
        any stockholder fails to comply with such direction, the Court may dismiss the proceedings as to such stockholder. If immediately before the merger or consolidation the shares of the class or series of stock of the constituent corporation as to
        which appraisal rights are available were listed on a national securities exchange, the Court shall dismiss the proceedings as to all holders of such shares who are otherwise entitled to appraisal rights unless (1) the total number of shares
        entitled to appraisal exceeds 1% of the outstanding shares of the class or series eligible for appraisal, (2) the value of the consideration provided in the merger or consolidation for such total number of shares exceeds $1 million, or (3) the
        merger was approved pursuant to § 253 or § 267 of this title.

      

      

      (h) After the Court determines the stockholders entitled to an appraisal, the appraisal proceeding shall be conducted in accordance with the rules of the Court of Chancery, including any rules
        specifically governing appraisal proceedings. Through such proceeding the Court shall determine the fair value of the shares exclusive of any element of value arising from the accomplishment or expectation of the merger or consolidation, together
        with interest, if any, to be paid upon the amount determined to be the fair value. In determining such fair value, the Court shall take into account all relevant factors. Unless the Court in its discretion determines otherwise for good cause shown,
        and except as provided in this subsection, interest from the effective date of the merger through the date of payment of the judgment shall be compounded quarterly and shall accrue at 5% over the Federal Reserve discount rate (including any
        surcharge) as established from time to time during the period between the effective date of the merger and the date of payment of the judgment. At any time before the entry of judgment in the proceedings, the surviving corporation may pay to each
        stockholder entitled to appraisal an amount in cash, in which case interest shall accrue thereafter as provided herein only upon the sum of (1) the difference, if any, between the amount so paid and the fair value of the shares as determined by the
        Court, and (2) interest theretofore accrued, unless paid at that time. Upon application by the surviving or resulting corporation or by any stockholder entitled to participate in the appraisal proceeding, the Court may, in its discretion, proceed
        to trial upon the appraisal prior to the final determination of the stockholders entitled to an appraisal. Any stockholder whose name appears on the list filed by the surviving or resulting corporation pursuant to subsection (f) of this section and
        who has submitted such stockholder’s certificates of stock to the Register in Chancery, if such is required, may participate fully in all proceedings until it is finally determined that such stockholder is not entitled to appraisal rights under
        this section.

      

      

      (i) The Court shall direct the payment of the fair value of the shares, together with interest, if any, by the surviving or resulting corporation to the stockholders entitled thereto. Payment shall be
        so made to each such stockholder, in the case of holders of uncertificated stock forthwith, and the case of holders of shares represented by certificates upon the surrender to the corporation of the certificates representing such stock. The Court’s
        decree may be enforced as other decrees in the Court of Chancery may be enforced, whether such surviving or resulting corporation be a corporation of this State or of any state.

      
        
          


      

      (j) The costs of the proceeding may be determined by the Court and taxed upon the parties as the Court deems equitable in the circumstances. Upon application of a stockholder, the Court may order all or
        a portion of the expenses incurred by any stockholder in connection with the appraisal proceeding, including, without limitation, reasonable attorney’s fees and the fees and expenses of experts, to be charged pro rata against the value of all the
        shares entitled to an appraisal.

      

      

      (k) From and after the effective date of the merger or consolidation, no stockholder who has demanded appraisal rights as provided in subsection (d) of this section shall be entitled to vote such stock
        for any purpose or to receive payment of dividends or other distributions on the stock (except dividends or other distributions payable to stockholders of record at a date which is prior to the effective date of the merger or consolidation);
        provided, however, that if no petition for an appraisal shall be filed within the time provided in subsection (e) of this section, or if such stockholder shall deliver to the surviving or resulting corporation a written withdrawal of such
        stockholder’s demand for an appraisal and an acceptance of the merger or consolidation, either within 60 days after the effective date of the merger or consolidation as provided in subsection (e) of this section or thereafter with the written
        approval of the corporation, then the right of such stockholder to an appraisal shall cease. Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery shall be dismissed as to any stockholder without the approval of the Court,
        and such approval may be conditioned upon such terms as the Court deems just; provided, however that this provision shall not affect the right of any stockholder who has not commenced an appraisal proceeding or joined that proceeding as a named
        party to withdraw such stockholder’s demand for appraisal and to accept the terms offered upon the merger or consolidation within 60 days after the effective date of the merger or consolidation, as set forth in subsection (e) of this section.

      

      

      (l) The shares of the surviving or resulting corporation to which the shares of such objecting stockholders would have been converted had they assented to the merger or consolidation shall have the
        status of authorized and unissued shares of the surviving or resulting corporation.