STOCK OPTION AGREEMENT THIS STOCK OPTION AGREEMENT (this 'Agreement') is entered into as of February 11, 2000, by and among CORNERSTONE PROPERTIES INC., a Nevada corporation ('Cornerstone'), EQUITY OFFICE PROPERTIES TRUST, a Maryland real estate investment trust ('EOP'), DEUTSCHE BANK AG der Deutschen Bank, a stock corporation organized under German law ('Deutsche Bank'), and DEUTSCHER HEROLD LEBENSVERSICHERUNGS-AG, a stock corporation organized under German law and an indirect subsidiary of Deutsche Bank ('Deutscher Herold'). In consideration of the mutual covenants and agreements contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound hereby, the parties hereto hereby agree as follows: ARTICLE I THE STOCK OPTION 1.1 GRANT OF STOCK OPTION. Each of Deutsche Bank and Deutscher Herold hereby grant to each of Cornerstone and EOP (each, a 'Purchaser') an irrevocable option (the 'Stock Option') to purchase, subject to the terms hereof, the number of fully paid and non-assessable shares of 7.0% Cumulative Convertible Preferred Stock, with no par value, of Cornerstone ('Cornerstone Preferred Stock') set forth on SCHEDULE A attached hereto opposite its name, subject to adjustment pursuant to Section 5 hereof (such shares of Cornerstone Preferred Stock held by Deutsche Bank and Deutscher Herold are referred to collectively as the 'Option Shares'), at a purchase price of $18.00 in cash per share of Cornerstone Preferred Stock or, if the Merger Agreement (as defined herein) is amended to increase the price per share of a share of Cornerstone common stock, no par value, in excess of $18.00 per share, then at a purchase price in cash equal to such greater price per share of Cornerstone common stock, no par value, as is so specified in the Merger Agreement, as so amended, in each case together with the dividends accrued and unpaid to the date of the Option Closing (the 'Purchase Price'), and in the manner set forth in Sections 1.2, 1.3 and 1.4 hereof. 1.2 EXERCISE OF THE STOCK OPTION. (a) The Stock Option may be exercised by Cornerstone or EOP, in whole but not in part, at any time or from time to time prior to termination of the Stock Option in accordance with this Section 1.2 and Section 9.8 hereof. (b) If at any time Cornerstone desires to exercise the Stock Option, Cornerstone shall (1) deliver to each of Deutsche Bank and Deutscher Herold a written notice (a 'Cornerstone Exercise Notice,' with the date of the Cornerstone Exercise Notice being hereinafter called the 'Cornerstone Notice Date') notifying each of Deutsche Bank and Deutscher Herold of its exercise of the Stock Option and (2) on the Cornerstone Notice Date, deliver to EOP a copy of the Cornerstone Exercise Notice. The closing of such exercise by Cornerstone of the Stock Option (the 'Cornerstone Option Closing') shall occur on the third business day immediately following the Cornerstone Notice Date at a time and at a place in New York, New York designated by Cornerstone in the Cornerstone Exercise Notice. 'Business Day' means a business day in Frankfurt, Bonn and New York. (c) Subject to Section 1.2(d) hereof, if at any time EOP desires to exercise the Stock Option, EOP shall (1) deliver to each of Deutsche Bank and Deutscher Herold a written notice (an 'EOP Exercise Notice,' with the date of the EOP Exercise Notice being hereinafter called the 'EOP Notice Date') notifying each of Deutsche Bank and Deutscher Herold of its exercise of the Stock Option and (2) on the EOP Notice Date, deliver to Cornerstone a copy of the EOP Exercise Notice; PROVIDED, HOWEVER, that EOP shall not be entitled to exercise the Stock Option or to deliver an EOP Exercise Notice if Cornerstone has delivered a Cornerstone Exercise Notice in accordance with the terms of this Agreement and the date for the Cornerstone Option Closing corresponding to such Cornerstone Option Closing, as set forth in Section 1.2(b) hereof, has not passed. Subject to Section 1.2(d) hereof, the closing of such exercise by EOP of the Stock Option (the 'EOP Option Closing') shall occur on the ninth business day immediately following the EOP Notice Date at a time and at a place in New York, New York designated by EOP in the EOP Exercise Notice. (d) Upon receipt of an EOP Exercise Notice, Cornerstone shall have the right, exercisable at any time prior to 5:00 p.m., New York time, on the second business day after the EOP Notice Date, to (1) deliver to each of Deutsche Bank and Deutscher Herold a Cornerstone Exercise Notice notifying each of Deutsche Bank and Deutscher Herold of its exercise of the Stock Option and (2) on the Cornerstone Notice Date, deliver to EOP a copy of the Cornerstone Exercise Notice. If Cornerstone so exercises the Stock Option, the Cornerstone Option Closing shall occur on the third business day immediately following the Cornerstone Notice Date at a time and at a place in New York, New York designated by Cornerstone in the Cornerstone Exercise Notice. Upon Cornerstone's purchase of the Option Shares pursuant thereto, the EOP Exercise Notice delivered pursuant to Section 1.2(d) shall be deemed of no force or effect. (e) Upon receipt of a Cornerstone Exercise Notice, each of Deutsche Bank and Deutscher Herold shall be obligated, provided that the conditions specified in Section 1.3 hereto shall be satisfied, to deliver to Cornerstone a certificate or certificates evidencing the Option Shares held by it, in accordance with the terms of this Agreement, on the third business day immediately following the Cornerstone Notice Date. -2- (f) On the date set for closing of any purchase of Option Shares hereunder, each of Deutsche Bank and Deutscher Herold shall, subject to satisfaction of the conditions specified in Section 1.3 hereof and receipt of the Purchase Price therefor, deliver to Purchaser (i) a certificate or certificates representing the Option Shares held by it, properly endorsed or otherwise in proper form for transfer, and (ii) an irrevocable proxy in form reasonably acceptable to Purchaser authorizing Purchaser or its designee to vote such Option Shares on all matters submitted to a vote of the holders of Cornerstone Preferred Stock. 1.3 CONDITIONS TO DELIVERY OF THE OPTION SHARES. The right of each of Cornerstone or EOP to exercise the Stock Option and the obligation of each of Deutsche Bank and Deutscher Herold to deliver the Option Shares held by it upon the exercise of the Stock Option are subject to the following conditions: (a) Such delivery would not violate in any material respect, or otherwise cause a material violation of, any material Law (as defined herein), including, without limitation, under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ('Hart-Scott-Rodino'), applicable to such exercise of Stock Option and the delivery of the Option Shares; and (b) There shall be no preliminary or permanent injunction or other order by any court of competent jurisdiction preventing or prohibiting such exercise of the Stock Option or the delivery of Option Shares in respect of such exercise. 1.4 CLOSING. At the Option Closing, Cornerstone or EOP, as applicable, shall pay to each of Deutsche Bank and Deutscher Herold, upon receipt of the certificate or certificates and proxy pursuant to Section 1.2(f), the aggregate Purchase Price for Option Shares to be purchased by Cornerstone or EOP, as applicable (net of any taxes required to be held pursuant to Section 1445 of the Internal Revenue Code of 1986, as amended), by wire transfer of immediately available funds to an account(s) designated by each of Deutsche Bank and Deutscher Herold at least two business days prior to the Option Closing. 1.5 ADJUSTMENTS UPON SHARE ISSUANCES, CHANGES IN CAPITALIZATION, ETC. In the event of any change in the Cornerstone Preferred Stock or in the number of outstanding shares of Cornerstone Preferred Stock by reason of a stock dividend, split-up, recapitalization, combination, exchange of shares or similar transaction or any other change in the corporate or capital structure of Cornerstone (including, without limitation, the declaration or payment of an extraordinary dividend in the form of cash, securities or other property), the type and number of shares or securities to be delivered by Deutsche Bank and Deutscher Herold upon exercise of the Stock Option shall be adjusted appropriately. -3- ARTICLE II REPRESENTATIONS AND WARRANTIES OF DEUTSCHE BANK AND DEUTSCHER HEROLD Each of Deutsche Bank and Deutscher Herold hereby represents and warrants to each of Cornerstone and EOP as follows: 2.1 AUTHORITY RELATIVE TO THIS AGREEMENT. It has all requisite corporate power and authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby to be consummated by it. The execution and delivery of this Agreement by it and the consummation by it of the transactions contemplated hereby have been duly authorized by all necessary corporate action, and no other corporate proceedings on the part of it are necessary to authorize the execution and delivery of this Agreement or to consummate the transactions contemplated hereby. This Agreement has been duly executed and delivered by it and constitutes the legal, valid and binding obligations of it, enforceable against it in accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar Laws relating to creditors' rights and general principles of equity. 2.2 NO LIENS. The Option Shares shall be delivered free and clear of all security interests, liens, claims, pledges, options, rights of first refusal, agreements, limitations on voting rights, charges and other encumbrances of any nature whatsoever (other than this Agreement). 2.3 NO VIOLATION. The execution and delivery of this Agreement by it do not, the performance of its obligations hereunder by it will not, the consummation by it of the transactions contemplated to be performed by it hereunder will not and the exercise by Cornerstone or EOP of the Stock Option hereunder will not, (i) violate or conflict with any provision of any judgment, order, decree, statute, law, ordinance, rule or regulation (collectively, 'Laws') in effect on the date of this Agreement and applicable to it (it being understood that neither Deutsche Bank nor Deutscher Herold makes any representation or warranty with respect to Hart-Scott-Rodino); (ii) require it to obtain any consent, waiver, approval, license or authorization or permit of, or make any filing with, or notification to, any governmental entities, based on laws, rules, regulations and other requirements of governmental entities in effect as of the date of this Agreement (it being understood that neither Deutsche Bank nor Deutscher Herold makes any representation or warranty with respect to Hart-Scott-Rodino); (iii) require the consent, waiver, approval, license or authorization of any person (other than a governmental entity and other than the property trustee (Deckungsstocktreuhander) of Deutscher Herold); (iv) violate, conflict with or result in a breach of any obligation under, or constitute a default (or an event which with notice or the lapse of time or both would become a default) under, or give to others any rights of, or result in any, termination, amendment, acceleration or cancellation of, or loss of any benefit or -4- creation of a right of first refusal, or require any payment under, any provision of any indenture, mortgage, note, bond, lien, lease, license, agreement, contract, order, judgment, ordinance, permit or other instrument or obligation to which it is a party or by which it is bound or subject to; or (v) conflict with or violate the articles or certificate of incorporation or bylaws, or the equivalent organizational documents, in each case as amended or restated, of it. ARTICLE III REPRESENTATIONS AND WARRANTIES OF CORNERSTONE Cornerstone hereby represents and warrants to each of Deutsche Bank and Deutscher Herold that it has all requisite corporate power and authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby to be consummated by Cornerstone. The execution and delivery of this Agreement by Cornerstone have been duly authorized by the Board of Directors of Cornerstone. This Agreement has been duly executed and delivered by Cornerstone and constitutes the legal, valid and binding obligations of it, enforceable against it in accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar laws relating to creditors' rights and general principles of equity. ARTICLE IV COVENANTS OF CORNERSTONE Cornerstone hereby covenants and agrees that it shall acquire Option Shares and/or other securities acquired upon its exercise of the Stock Option for investment purposes only and not with a view to any distribution thereof in violation of the Securities Act of 1933, as amended (the 'Securities Act'), and immediately shall cancel the Option Shares upon their purchase by Cornerstone hereunder. ARTICLE V REPRESENTATIONS AND WARRANTIES OF EOP EOP hereby represents and warrants to each of Deutsche Bank and Deutscher Herold that it has all requisite trust power and authority to execute and deliver this Agreement, to perform its obligations hereunder and to consummate the transactions contemplated hereby to be consummated by EOP. The execution and delivery of this Agreement by EOP have been duly authorized by the Board of Trustees of EOP. This Agreement has been duly executed and delivered by EOP and constitutes the legal, valid and binding obligations of it, enforceable against it in accordance with its terms, subject to applicable bankruptcy, insolvency, -5- moratorium or other similar laws relating to creditors' rights and general principles of equity. ARTICLE VI COVENANTS OF EOP EOP hereby covenants and agrees that it shall acquire Option Shares and/or other securities acquired upon its exercise of the Stock Option for investment purposes only and not with a view to any distribution thereof in violation of the Securities Act, and shall not sell any such securities purchased pursuant to this Agreement except in compliance with the Securities Act. ARTICLE VII COVENANTS OF DEUTSCHE BANK AND DEUTSCHER HEROLD Each of Deutsche Bank and Deutscher Herold shall not, directly or indirectly, and shall cause each of its affiliates not to, directly or indirectly, (a) sell, transfer, pledge, encumber, assign or otherwise dispose of, or enter into any contract, option or other agreement or understanding with respect to the sale, transfer, pledge, encumbrance, assignment or other disposition of, Option Shares, (b) grant any proxies for any Option Shares, (c) deposit any Option Shares into a voting trust or enter into a voting agreement with respect to any Option Shares, or tender any Option Shares in a transaction, or (d) take any action which is intended to have the effect of preventing or disabling Deutsche Bank or Deutscher Herold from performing its obligations under this Agreement; PROVIDED, HOWEVER, that nothing herein shall prevent the sale, transfer, pledge or assignment of any of such Option Shares, provided that the purchaser, transferee, pledgee or assignee thereof agrees in writing to be bound by the terms of this Agreement. To enable either of the Purchasers to enforce the transfer restrictions contained in this Article VII, each of Deutsche Bank and Deutscher Herold hereby consents to the placing of stop-transfer orders with the transfer agent of the Cornerstone Preferred Stock. -6- ARTICLE VIII WAIVER OF DISSENTERS' RIGHTS Each of Deutsche Bank and Deutscher Herold hereby irrevocably and forever waives any and all rights it may have under Chapter 92A of the General Corporation Law of Nevada with respect to any of the transactions contemplated by that certain Merger Agreement, dated as of February 11, 2000, by and among EOP, EOP Partnership, Cornerstone and Cornerstone Partnership (the 'Merger Agreement'). Notwithstanding the foregoing, the foregoing waiver shall be of no force or effect after December 31, 2000. ARTICLE IX MISCELLANEOUS 9.1 EXPENSES. Except as expressly provided herein to the contrary, each party hereto shall pay all of its expenses in connection with the transactions contemplated by this Agreement, including, without limitation, the fees and expenses of its counsel and other advisors. 9.2 NOTICES. All notices and other communications given or made pursuant hereto shall be in writing and shall be given (and shall be deemed to have been duly given upon receipt) by delivery in person, by telecopy or facsimile, by registered or certified mail (postage prepaid, return receipt requested), or by a nationally recognized courier service to the parties at the following addresses (or at such other address for a party as shall be specified by like changes of address) or, if sent by telecopy or facsimile, to the parties at the telecopier numbers specified below: If to Cornerstone: Cornerstone Properties Inc. 126 East 56th Street New York, NY 10022 Attention: Lee Van Boven, Esq. Telecopier: 650-345-8264 With a copy King & Spalding (which shall not 191 Peachtree Street constitute notice) to: Atlanta, GA 30303-1763 Attention: William B. Fryer, Esq. Telecopier: 404-572-5100 -7- If to EOP: Equity Office Properties Trust Two North Riverside Plaza Chicago, IL 60606 Attention: Stanley M. Stevens, Esq. Telecopier: 312-559-5021 With copies Hogan & Hartson L.L.P. (which shall not 555 13th Street, N.W. constitute notice) to: Washington, D.C. 20004 Attention: J. Warren Gorrell, Jr., Esq. George P. Barsness, Esq. Telecopier: 202-637-5910 If to Deutsche Bank: Deutsche Bank AG Group Investments Taunusanlage 12 60325 Frankfurt am Main GERMANY Attention: Lutz Robra Telecopier: 49 69 910-43583 With a copy White & Case LLP (which shall not 1155 Avenue of the Americas constitute notice) to: New York, NY 10036 Attention: Duane D. Wall, Esq. Telecopier: (212) 819-8200 If to Deutscher Herold: Deutscher Herold Lebensversicherungs-AG der Deutschen Bank Poppelsdorfer Allee 25-33 53115 Bonn GERMANY Attention: Mr. J. Klahn Telecopier: 49 228 268 3838 With copies White & Case LLP (which shall not 1155 Avenue of the Americas constitute notice) to: New York, NY 10036 Attention: Duane D. Wall, Esq. Telecopier: (212) 819-8200 -8- 9.3 ENTIRE AGREEMENT. This Agreement constitutes the entire agreement between the parties and supersedes all prior agreements and understandings, both written and oral, between the parties, or any of them, with respect to the subject matter hereof. 9.4 ASSIGNMENT. Neither this Agreement nor any rights or obligations hereunder shall be assigned by operation of law or otherwise, without the prior written consent of the other party hereto; PROVIDED, HOWEVER, that EOP may assign this Agreement or any of its rights or obligations hereunder to EOP Operating Limited Partnership, a Delaware limited partnership ('EOP Partnership'), without the consent of any other party hereto; PROVIDED, FURTHER, HOWEVER, that Cornerstone may assign this Agreement or any of its rights or obligations hereunder to Cornerstone Properties Limited Partnership, a Delaware limited partnership ('Cornerstone Partnership'), without the consent of any other party hereto (PROVIDED, HOWEVER, that Cornerstone Partnership agrees to cause Cornerstone to cancel the Option Shares immediately upon any purchase by Cornerstone Partnership hereunder). 9.5 GOVERNING LAW. This Agreement, and all matters relating hereto, shall be governed by, and construed in accordance with the laws of the State of Maryland, regardless of the laws that might govern under applicable principles of conflict of law theory. 9.6 CONSENT TO JURISDICTION; WAIVER OF JURY TRIAL. Each of Deutsche Bank and Deutscher Herold hereby submits and consents to non-exclusive personal jurisdiction in any action, suit or proceeding arising out of this Agreement or the transactions contemplated hereby (and for no other purposes) in a federal court located in the State of Maryland or in a Maryland state court. Any process, summons, notice or document delivered by mail to the address set forth in Section 9.2 shall be effective service of process for any action, suit or proceeding in any Maryland state court or any federal court located in the State of Maryland with respect to any matters to which Deutsche Bank or Deutscher Herold has submitted to jurisdiction in this Section 9.6. Each of Deutsche Bank and Deutscher Herold irrevocably and unconditionally waives any objection to the laying of venue of any action, suit or proceeding arising out of this Agreement or the transactions contemplated hereby in any Maryland state court or any federal court located in the State of Maryland, and hereby irrevocably and unconditionally waives and agrees not to plead or claim in any such court that any such action, suit or proceeding brought in any such court has been brought in an inconvenient forum. EACH OF DEUTSCHE BANK AND DEUTSCHER HEROLD IRREVOCABLY WAIVES TRIAL BY JURY IN ANY ACTION, SUIT OR PROCEEDING WITH RESPECT TO THIS AGREEMENT. 9.7 INJUNCTIVE RELIEF. The parties agree that in the event of a breach of any provision of this Agreement irreparable damage would occur, the aggrieved -9- party would be without an adequate remedy at law and damages would be difficult to determine. The parties therefore agree that in the event of a breach of any provision of this Agreement, the aggrieved party may elect to institute and prosecute proceedings in any court of competent jurisdiction to enforce specific performance or to enjoin the continuing breach of such provision. By seeking or obtaining such relief, the aggrieved party shall not be precluded from seeking or obtaining any other relief to which it may be entitled at law or in equity. 9.8 TERMINATION. The Stock Option shall terminate upon the earlier of: (i) the consummation of the Cornerstone Option Closing or the EOP Option Closing hereunder; (ii) the date which is the tenth day after the termination of the Merger Agreement; or (iii) December 31, 2000. 9.9 COUNTERPARTS. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original and all of which together shall constitute one and the same document. 9.10 SEVERABILITY. Any term or provision of this Agreement which is invalid or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such invalidity or unenforceability without rendering invalid or unenforceable the remaining terms and provisions of this Agreement or affecting the validity or enforceability of any of the terms or provisions of this Agreement in any other jurisdiction. If any provision of this Agreement is so broad as to be unenforceable, such provision shall be interpreted to be only so broad as to make it enforceable. 9.11 FURTHER ASSURANCES. Each party hereto shall execute and deliver all such further documents and take all such further action as may be necessary in order to consummate the transactions contemplated by this Agreement. 9.12 THIRD PARTY BENEFICIARIES. Nothing in this Agreement, expressed or implied, shall be construed to give any person other than the parties hereto and their successors and permitted assigns any legal or equitable right, remedy or claim under or by reason of this Agreement or any provision contained herein. 9.13 AMENDMENT AND MODIFICATION. This Agreement may be amended, modified and supplemented only by a written document executed by Cornerstone, EOP, Deutsche Bank and Deutscher Herold. 9.14 TREATMENT OF CORNERSTONE PREFERRED STOCK IN THE MERGER. Each share of Cornerstone Preferred Stock shall be converted in the Merger into the right to receive $18.00, together with accrued and unpaid dividends to the Effective Time of the Merger, in cash, as described in Section 1.10(b)(iii) of the Merger Agreement. 9.15 PUT RIGHT. In the event that the Stock Option is not exercised within two business days after the Effective Time of the Merger, each of Deutsche -10- Bank and Deutscher Herold shall have the right to require EOP to purchase the Option Shares in the same manner and with the same effect as if EOP shall have given an EOP Exercise Notice, whereupon EOP shall be required to purchase such Option Shares in accordance with this Agreement. -11- IN WITNESS WHEREOF, the parties have caused this Agreement to be executed as of the date first written above by their respective officers thereunto duly authorized. CORNERSTONE PROPERTIES INC. By: /s/ John S. Moody --------------------------- Name: John S. Moody Title: President and Chief Executive Officer EQUITY OFFICE PROPERTIES TRUST By: /s/ Stanley M. Stevens ---------------------------- Name: Stanley M. Stevens Title: Executive Vice President and Chief Legal Counsel DEUTSCHE BANK AG By: /s/ Lutz Robra /s/ Gerald F. Bender --------------------------- ---------------------- Name: Lutz Robra Gerald F. Bender Title: Director Senior Associate Director DEUTSCHER HEROLD LEBENSVERSICHERUNGS-AG By: /s/ K.R. Vias /s/ J. Klahn --------------------------- --------------------- Name: K.R. Vias J. Klahn Title: Director Director -12- SCHEDULE A Cornerstone Properties Inc. 7% Cumulative Convertible Preferred Stock Deutsche Bank AG 2,249,053 shares Deutscher Herold Lebensversicherungs-AG 781,250 shares TYPE: EX-10.2 SEQUENCE: 4 DESCRIPTION: EXHIBIT 10.2 Exhibit 10.2 VOTING AGREEMENT (PGGM) THIS VOTING AGREEMENT (this 'AGREEMENT') is entered into as of February 11, 2000 by and among Equity Office Properties Trust, a Maryland real estate investment trust ('EOP'), EOP Operating Limited Partnership, a Delaware limited partnership ('EOP PARTNERSHIP'), WCP Services, Inc., a Delaware corporation ('WCP'), and Stichting Pensioenfonds voor de Gezondheid, Geestelijke en Maatschappelijke Belangen, a stichting formed according to the laws of the Kingdom of The Netherlands ('PGGM'). WHEREAS, EOP, EOP Partnership, Cornerstone Properties, Inc., a Nevada corporation ('Cornerstone'), Cornerstone Properties Limited Partnership, a Delaware limited partnership ('CORNERSTONE PARTNERSHIP'), will enter into an Agreement and Plan of Merger dated as of the date hereof (the 'MERGER Agreement'), pursuant to which (i) Cornerstone Partnership will be merged with and into EOP Partnership (the 'PARTNERSHIP MERGER'), with EOP Partnership as the survivor of the Partnership Merger, and (ii) Cornerstone will be merged with and into EOP (the 'MERGER'), with EOP as the survivor of the Merger (all capitalized terms used but not defined herein shall have the meanings set forth in the Merger Agreement); WHEREAS, PGGM is the beneficial and record owner of 45,779,703 issued and outstanding shares of common stock, with no par value per share, of Cornerstone (such shares, together with any shares acquired hereafter, the 'CORNERSTONE COMMON SHARES') as more particularly described on SCHEDULE 1; WHEREAS, in accordance with the Recitals in the Merger Agreement, PGGM desires to execute and deliver this Agreement solely in its capacity as a holder of Cornerstone Common Shares; and WHEREAS, to induce PGGM to enter into this Agreement, EOP, EOP Partnership and WCP desire to make certain undertakings and agreements as set forth herein. NOW, THEREFORE, in consideration of the foregoing and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: SECTION 1. DISPOSITION OF CORNERSTONE COMMON SHARES During the period from the date hereof through the earlier of (i) the date on which the Merger is consummated or (ii) 30 days after the date on which the Merger Agreement is terminated according to its terms (such period hereinafter referred to as the 'TERM'), PGGM shall not, directly or indirectly, (a) sell, transfer, pledge, encumber, assign or otherwise dispose of, or enter into any contract, option or other agreement or understanding with respect to the sale, transfer, pledge, encumbrance, assignment or other disposition of, any Cornerstone Common Shares, (b) grant any proxies for any Cornerstone Common Shares with respect to any matters described in Section 2(a) hereof (other than a proxy directing the holder thereof to vote the Cornerstone Common Shares in a manner required by Section 2(a) hereof), (c) deposit any Cornerstone Common Shares into a voting trust or enter into a voting agreement with respect to any Cornerstone Common Shares with respect to any matters described in Section 2(a) hereof, or tender any Cornerstone Common Shares in a transaction other than a transaction contemplated by the Merger Agreement, or (d) take any action which is intended to have the effect of preventing or disabling PGGM from performing its obligations under this Agreement; PROVIDED, HOWEVER, that nothing herein shall prevent the sale, transfer, pledge, encumbrance, assignment or other disposition of any of such Cornerstone Common Shares, provided that the purchaser, transferee, pledgee or assignee thereof agrees in writing to be bound by the terms of this Agreement. SECTION 2. VOTING (a) During the Term, PGGM shall cast or cause to be cast all votes attributable to the Cornerstone Common Shares, at any annual or special meeting of shareholders of Cornerstone, including any adjournments or postponements thereof, or in connection with any written consent or other vote of Cornerstone shareholders, (i) in favor of adoption of the Merger Agreement and approval of the Merger and the other transactions contemplated by the Merger Agreement (including any amendments or modifications of the terms of the Merger Agreement approved by the board of directors of Cornerstone that would not materially adversely affect PGGM in its capacity as beneficial owner of Cornerstone Common Stock), and (ii) against approval or adoption of any action or agreement (other than the Merger Agreement or the transactions contemplated thereby) made or taken in opposition to or in competition with the Merger or the Partnership Merger. (b) PGGM will retain the right to vote its Cornerstone Common Shares, in its sole discretion, on all matters other than those described in paragraph (a) of this Section 2, and PGGM may grant proxies and enter into voting agreements or voting trusts for its Cornerstone Common Shares in respect of such other matters. SECTION 3. NON-SOLICITATION During the Term, PGGM (a) shall not, and shall not permit any of its officers, directors, employees, Affiliates, agents, investment bankers, financial advisors, attorneys, accountants, brokers, finders or other representatives retained -2- by it to, (i) invite, initiate, solicit or encourage, directly or indirectly, any inquiries, proposals, discussions or negotiations or the making or implementation of any Acquisition Proposal, or (ii) engage in any discussions or negotiations with or provide any confidential or non-public information or data to, any person relating to an Acquisition Proposal, or otherwise facilitate any effort or attempt to make or implement an Acquisition Proposal; and (b) shall notify EOP immediately if it receives any such inquiries or proposals, or any requests for such information, or if any such negotiations or discussions are sought to be initiated or continued with PGGM. SECTION 4. TAX MATTERS (a) So long as there is no change in Section 1445 of the Internal Revenue Code of 1986, as amended (the 'Code'), the Treasury Regulations promulgated thereunder, or the published interpretations of the Internal Revenue Service with respect thereto occurring after the date hereof (a 'Change in Law'), EOP shall not withhold, and shall not cause to be withheld, any tax pursuant to Section 1445 of the Code in respect of the Merger Consideration to be paid to PGGM pursuant to the Merger. In the event that EOP believes that a Change in Law has occurred, it shall deliver written notice thereof to PGGM. In the event that PGGM shall deliver to EOP an opinion of nationally recognized tax counsel reasonably satisfactory to EOP to the effect that, taking into account the Change in Law, EOP is not required to withhold any amount of federal tax with respect to any portion of the Merger Consideration payable to PGGM under the Merger Agreement, then the obligation of EOP set forth in the first sentence of this subparagraph (a) shall continue in effect. (b) (i) EOP shall designate distributions paid by EOP to its shareholders that have a record date during 2000 prior to the Closing Date as 'capital gain dividends' (as defined in Section 857(b)((3)(C)) of the Code) in an amount equal to the lesser of (A) the distributions paid by EOP to its shareholders that have a record date during 2000 prior to the Closing Date (reduced by any amount designated by EOP pursuant to Section 858(a) of the Code and the Treasury Regulations thereunder as being paid during 1999), or (B) the amount of gain that is recognized by EOP during the period commencing on January 1, 2000 and ending on the date prior to the Closing Date with respect to the disposition of 'United States real property interests' (as defined for purposes of Section 897 of the Code) and that is otherwise eligible for designation as a 'capital gain dividend' under Section 857(b)(3)(C) of the Code, and (ii) it shall cause the Form 1099s to be delivered to PGGM and the other EOP shareholders with respect to the year 2000 to be prepared in a manner consistent with the foregoing designation; PROVIDED, HOWEVER, that EOP makes no representation or warranty to PGGM that the aforesaid designation will be respected for federal income tax purposes and that EOP in no event shall have any liability to PGGM by reason of a recharacterization by the Internal Revenue Service of distributions paid by EOP to PGGM during or -3- with respect to 2000 as 'capital gain dividends' or as otherwise including income attributable to the disposition of 'United States real property interests.' EOP also agrees not to withhold from amounts otherwise distributable to PGGM any tax pursuant to Section 1445 attributable to 'capital gains dividends' (within the meaning of Section 857(b)(3)(C) of the Code) distributed by EOP to its shareholders in 1999. (c) Upon request from PGGM made from time to time (but not more frequently than once each calendar quarter), EOP shall endeavor to deliver to PGGM within fifteen (15) business days after the request therefor a statement (based upon reasonable inquiry) to the effect that, to the knowledge of EOP, EOP qualifies as a 'domestically controlled REIT' (within the meaning of Section 897(h)(4)(B) of the Code) if such statement in fact would be true when made. For purposes of such statement, reasonable inquiry shall include review of all Schedule 13D and 13G filings made under the Exchange Act with the SEC with respect to EOP during the lesser of the five calendar years preceding the date of the statement or the period commencing July 1, 1997, all IRS Form 1042 filings made by or on behalf of EOP with respect to each of the five taxable years preceding the date of the statement (or if shorter, the period commencing July 1, 1997), the list of EOP's registered shareholders as of a date within 60 days of such statement (and to the extent reasonably available, as of a date within 60 days of the end of each of the preceding five calendar years (or if shorter, each of the calendar years commencing with 1997)), a report obtained by EOP from a shareholders tracking service within 60 days of such statement (and any similar reports in the possession of EOP or otherwise reasonably available to EOP providing information as of a date within 60 days of the end of each of the five preceding calendar years (or if shorter, each of the calendar years commencing with 1997)), and a list of 'non-objecting beneficial owners' of shares of EOP obtained as of a date within 60 days of such statement (and to the extent reasonably available, as of a date within 60 days of the end of each of the preceding five calendar years (or if shorter, each of the calendar years commencing with 1997)). Such statement shall be accompanied by copies of the information that has been obtained or relied upon by EOP for purposes of such statement, PROVIDED THAT PGGM shall have executed an agreement with EOP to treat such information as confidential and to use such information solely for the purposes of evaluating the accuracy of such statement. In the event that EOP should determine in good faith that it cannot provide to PGGM the requested statement for any reason, EOP shall notify PGGM of such conclusion and the facts that cause it to be unable to render such statement. In addition to, and without limiting, the foregoing, in the event that the General Counsel of EOP shall have actual knowledge that more than 40 percent, by fair market value, of the outstanding equity interests of EOP are owned directly or indirectly by 'foreign persons' (as that term is used for purposes of Section 897(h)(4)(B) of the Code), EOP shall provide written notice thereof (together with a summary of the relevant facts) to PGGM, PROVIDED THAT the only duty of inquiry of EOP shall be as set forth in the first sentence of this subparagraph (c). -4- (d) In the event that EOP shall make any distributions to PGGM that it concludes in good faith would be subject to withholding of tax pursuant to the last sentence of Section 1445(e)(3) of the Code and any Treasury Regulations promulgated with respect thereto, EOP shall provide such reasonable cooperation as PGGM may request in applying to the Internal Revenue Service for a 'withholding certificate' that would reduce or eliminate the requirement for such withholding; PROVIDED, HOWEVER, that PGGM shall be responsible for the preparation and submission of the application for such withholding certificate and that EOP shall not be precluded from withholding such tax unless and until a 'withholding certificate' is obtained (in which event EOP would not withhold tax that, under the express terms of the 'withholding certificate,' is not required to be withheld). In addition, in the event that PGGM shall provide to EOP an opinion of nationally recognized tax counsel reasonably satisfactory to EOP to the effect that EOP is not required pursuant to Section 1445(e)(3) of the Code and any Treasury Regulations promulgated with respect thereto to withhold any amount of federal tax with respect to any portion a distribution to PGGM, EOP shall not withhold any such tax unless it shall conclude in good faith that a Change in Law has occurred after the date of such opinion, in which event EOP shall provide written notice thereof to PGGM. Thereafter, the preceding sentence would not apply unless PGGM delivers an opinion of nationally recognized tax counsel reasonably satisfactory to EOP reconfirming the original opinion, after taking into account the Change in Law. (e) The obligations of EOP set forth in subparagraphs (c) and (d) shall terminate at such time as PGGM owns less than the lesser of (i) one percent (1%) of the issued and outstanding EOP Common Shares or (ii) the number of EOP Common Shares issued to PGGM in the Merger. (f) PGGM agrees that, effective as of the Effective Time of the Merger, all agreements and undertakings previously entered into by Cornerstone or any Cornerstone Subsidiary with respect to tax matters, including, without limitation, agreements restricting the sale or other disposition of one or more assets owned by Cornerstone, Cornerstone Partnership, or any Subsidiary of either Cornerstone or Cornerstone Partnership shall terminate for events or transactions occurring after the Effective Time of the Merger, and that neither EOP, EOP Partnership nor any Subsidiaries of either EOP or EOP Partnership shall have any obligation or liability thereunder for events or transactions occurring following the Effective Time of the Merger. Without limiting the foregoing, such termination shall include the agreements of Cornerstone and Cornerstone Partnership set forth in the letter dated June 22, 1998 from Cornerstone and Cornerstone Partnership to PGGM, the undertakings with respect to tax matters set forth in the Amended and Restated Registration Rights and Voting Agreement dated as of December 16, 1998 by and among Cornerstone, PGGM, and Dutch Institutional Holding Company, Inc. (THE 'REGISTRATION RIGHTS AGREEMENT'), and the policy of Cornerstone with -5- respect to One Norwest Center, Denver, Colorado (and any properties acquired in exchange therefor) adopted by its Board of Directors at a meeting on August 13, 1997. SECTION 5. CONSENT TO TRANSFER To the extent required by any mortgage, pledge, security agreement, deed of trust or other agreement or instrument entered into by Cornerstone or any of its Affiliates with or for the benefit of PGGM, including, without limitation, the agreements listed in item 5 on EXHIBIT A attached hereto (collectively, the 'INSTRUMENTS'), PGGM agrees and acknowledges that, subject to and effective as of the Effective Time of the Merger, without any further action by Cornerstone, EOP, PGGM or any other party thereto or beneficiary thereof, PGGM hereby consents to the transfer to EOP and its Affiliates as a result of the Mergers and other transactions contemplated by the Merger Agreement of the beneficial ownership interest of any of the Affiliates of Cornerstone who are a party to the Instruments and to each other matter thereunder with respect to which PGGM's consent is required in connection with the Mergers and other transactions contemplated by the Merger Agreement. SECTION 6. REGISTRATION RIGHTS AGREEMENT PGGM and EOP hereby agree and acknowledge that, subject to and effective as of the Effective Time of the Merger, without any further action by Cornerstone, EOP or PGGM, EOP and PGGM shall be bound by the Registration Rights Agreement as the same is amended as follows: (a) From and after the Effective Time of the Merger, (i) all references in the Registration Rights Agreement to the 'Company' shall be deemed to be references to EOP; (ii) all references therein to DIHC shall be deleted; (iii) the references to 'that together own 25% or more of the issued and outstanding Common Stock' in Sections 1.2(iii) and 1.2(iv) shall be deleted; (iv) all references therein to 'Common Stock' shall refer to the EOP Common Shares, (v) the 'Initial Percentage' shall mean 12% of the issued and outstanding Common Stock; (vi) the 'Standstill Period' shall mean, with respect to any Holder, a period of time commencing on the Effective Time of the Merger and terminating ninety (90) days after the first date following the election of PGGM's designees to EOP's Board of Trustees that no Trustee designated by PGGM pursuant to Section 7 of this Voting Agreement remains a Trustee of EOP; and (vii) all references therein to 'Units' shall refer to EOP OP Units. (b) Section 2 shall be deleted in its entirety and all references to Section 2 in the Registration Rights Agreement shall be deleted. -6- (c) Section 3.1(a) shall be amended to delete the reference to the specified Cornerstone Registration Statement and to cause the first line to read as follows: 'Within 20 days after the request of PGGM following the Effective Time of the Merger.' (d) Section 7 shall be deleted in its entirety and all references to Section 7 in the Registration Rights Agreement shall be deleted. (e) Section 8 shall be amended as follows: (i) the reference to 'that together with its Affiliates owns 25% or more of the issued and outstanding shares of Common Stock' in Section 8 shall be deleted, and (ii) the reference to 'Section 78.140 of the Nevada General Corporation Law' shall refer to Section 2-419 of the Maryland General Corporation Law. (f) Section 9 shall be amended as follows: (i) deleting 'and' after the end of clause (I), (ii) adding 'and' after the end of clause (II), and (iii) adding a new clause (III) as follows: '(III) by the Company in connection with a Business Combination to which the Company is a party.' (g) Section 11 shall be amended to refer to the address of EOP set forth in the Merger Agreement. (h) Sections 12 and 13 shall be deleted. SECTION 7. TRUSTEES The trustees of EOP following the Merger shall consist of the trustees of EOP immediately prior to the Effective Time of the Merger, who shall continue to serve for the balance of their unexpired terms or their earlier death, resignation or removal, together with John S. Moody, William Wilson III and Jan van der Vlist, each of whom shall, no later than the third business day after the Effective Time of the Merger, become a trustee with terms expiring in 2002, 2003 and 2003, respectively. Upon the expiration of the terms of Mr. van der Vlist in 2003 and 2006, so long as PGGM and its Affiliates continue to own in the aggregate 21,000,000 (as adjusted for stock splits, reverse stock splits, -7- stock dividends and similar actions) or more of the issued and outstanding EOP Common Shares at all times up to the meeting of shareholders at which trustees are being elected in such years, EOP shall take all action necessary to nominate Mr. van der Vlist for re-election as a trustee of EOP for an additional three-year term at any special or annual meeting of shareholders at which trustees are being elected (or in connection with a written consent in lieu of a meeting pursuant to which trustees are proposed to be elected). In the event that Mr. Van der Vlist shall fail to stand for re-election as aforesaid for any reason in either 2003 or 2006 or in the event of his earlier death or resignation, and so long as PGGM and its Affiliates continue to own in the aggregate 21,000,000 (as adjusted for stock splits, reverse stock splits, stock dividends and similar actions) or more of the issued and outstanding EOP Common Shares at such time, EOP shall take all action necessary to nominate a replacement designated by PGGM, which replacement shall be subject to the approval of EOP if such replacement is not an officer, director or employee of PGGM, for election or re-election as a trustee of EOP for an additional three-year term at any special or annual meeting of shareholders at which trustees are being elected (or in connection with a written consent in lieu of a meeting pursuant to which trustees are proposed to be elected) or, in the case of a vacancy, at a meeting of the Board of Trustees called for such purpose. Except as expressly provided above in this Section 7, following their election as trustees, such persons shall serve for their designated terms, subject to their earlier death, resignation or removal. SECTION 8. CERTAIN AGREEMENTS PGGM represents and warrants to EOP, EOP Partnership and WCP that (a) the only pending claims asserted against PGGM or Robert T. Sorrentino, Craig W. Johnston or Barrington H. Branch (the 'Individuals') under the Indemnity Agreement, dated as of October 27, 1997, as thereafter amended, among DIHC Holding Company, Inc., PGGM and Cornerstone (the 'Indemnity Agreement') or any of the agreements listed in items 1, 2, 3 and 4 on EXHIBIT A attached hereto (collectively, the 'Purchase Agreements') are (i) the Western Litigation (as defined in the Indemnity Agreement) and (ii) the Massachusetts state tax claim previously disclosed to EOP in writing (the 'Massachusetts Tax Claim'), and (b) to its knowledge after reasonable inquiry, there is no basis for any further claim, obligation, or liability of PGGM or any of the Individuals under the Indemnity Agreement or any of the Purchase Agreements. EOP, EOP Partnership and WCP hereby agree and acknowledge that, subject to and effective as of the Effective Time of the Merger, without any further action by EOP, EOP Partnership, WCP or PGGM, PGGM and the Individuals shall be released and discharged from any and all claims, obligations or liabilities under the Indemnity Agreement and the Purchase Agreements, including, without limitation, with respect to or in connection with the Massachusetts Tax Claim (collectively, the 'Released Claims'), EXCEPT for (x) any claims, obligations or liabilities with respect to or in connection with the Western Litigation and (y) any claims, obligations or liabilities a basis for which PGGM has or would have had knowledge after reasonable inquiry as of the Effective Time (collectively (x) and (y) being referred to as the 'Excluded Claims'). From and after the Effective Time, EOP and EOP Partnership shall indemnify, defend and hold harmless PGGM from and against any and all cost, claim, liability, damage or expense (including, without limitation, reasonable attorneys' fees) with respect to or in connection with the Released Claims and PGGM and the Individuals shall be obligated under the Indemnity Agreement and the Purchase Agreements to EOP and EOP Partnership with respect to or in connection with the Excluded Claims. -8- SECTION 9. REPRESENTATIONS AND WARRANTIES OF PGGM PGGM represents and warrants to EOP and EOP Partnership as follows: (a) PGGM has the legal capacity, power, authority and right (contractual or otherwise) to execute and deliver this Agreement and to perform its obligations hereunder. PGGM has obtained all consents of third parties necessary to enter into this Agreement and to perform its obligations hereunder, including, without limitation, the amendments to the Registration Rights Agreement. (b) This Agreement has been duly executed and delivered by PGGM and constitutes a valid and binding obligation of PGGM enforceable against PGGM in accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar laws relating to creditors rights and general principles of equity. (c) The execution and delivery of this Agreement and the consummation of the transactions herein contemplated will not conflict with or violate any court order, judgment or decree applicable to PGGM, or conflict with or result in any breach of or constitute a default (or an event which with notice or lapse of time or both would become a default) under any contract or agreement to which PGGM is a party or by which PGGM is bound or affected, which conflict, violation, breach or default would materially and adversely affect PGGM's ability to perform any of its obligations under this Agreement. (d) Subject to any required filings under the Securities Exchange Act of 1934 (the ' '34 Act'), PGGM is not required to give any notice or make any report or other filing with any governmental authority in connection with the execution or delivery of this Agreement or the performance of PGGM's obligations hereunder and no waiver, consent, approval or authorization of any governmental or regulatory authority or any other person or entity is required to be obtained by PGGM for the performance of PGGM's obligations hereunder, other than where the failure to make such filings, give such notices or obtain such waivers, consents, approvals or authorizations would not materially and adversely affect PGGM's ability to perform this Agreement. (e) Cornerstone Common Shares set forth opposite PGGM on SCHEDULE 1 hereto are the only Cornerstone Common Shares or other Cornerstone or Cornerstone Partnership securities owned beneficially or of record by PGGM or over which it exercises voting control. -9- SECTION 10. REPRESENTATIONS AND WARRANTIES OF EOP AND EOP PARTNERSHIP EOP and EOP Partnership represent and warrant to PGGM as follows: (a) Each of EOP and EOP Partnership has the legal capacity, power, authority and right (contractual or otherwise) to execute and deliver this Agreement and to perform its obligations hereunder. Each of EOP and EOP Partnership has obtained all consents of third parties necessary to enter into this Agreement and to perform its obligations hereunder. (b) This Agreement has been duly executed and delivered by EOP and EOP Partnership and constitutes a valid and binding obligation of EOP and EOP Partnership enforceable against them in accordance with its terms, subject to applicable bankruptcy, insolvency, moratorium or other similar laws relating to creditors rights and general principles of equity. (c) The execution and delivery of this Agreement and the consummation of the transactions herein contemplated will not conflict with or violate any court order, judgment or decree applicable to EOP or EOP Partnership, or conflict with or result in any breach of or constitute a default (or an event which with notice or lapse of time or both would become a default) under any contract or agreement to which EOP or EOP Partnership is a party or by which EOP or EOP Partnership is bound or affected, which conflict, violation, breach or default would materially and adversely affect EOP or EOP Partnership's ability to perform any of its obligations under this Agreement. (d) Subject to any required filings under the Securities Exchange Act of 1934 (the ' '34 Act'), neither EOP nor EOP Partnership is required to give any notice or make any report or other filing with any governmental authority in connection with the execution or delivery of this Agreement or the performance of its obligations hereunder and no waiver, consent, approval or authorization of any governmental or regulatory authority or any other person or entity is required to be obtained by EOP or EOP Partnership for the performance of its obligations hereunder, other than where the failure to make such filings, give such notices or obtain such waivers, consents, approvals or authorizations would not materially and adversely affect its ability to perform this Agreement. SECTION 11. FURTHER ASSURANCES PGGM shall make such filings as may be required from time to time under the '34 Act. The parties hereto shall, upon request by the other, do, execute, acknowledge, deliver, record, re-record, file, re-file, register and re-register any and all such further acts, deeds, conveyances, security agreements, pledge agreements, mortgages, deeds of trust, trust deeds, assignments, estoppel certificates, financing -10- statements and continuation thereof, termination statements, notices of assignment, transfers, certificates, assurances and other instruments as the requesting party reasonably may request from time to time in order to effectuate the purposes of this Agreement, including, without limitation, to perfect and maintain the validity, effectiveness and priority of any of the Instruments and the liens and security interests intended to be created thereby and better to assure, convey, grant, assign, transfer, preserve, protect and confirm unto PGGM the rights granted now or hereafter intended to be granted under the Instruments. SECTION 12. DESCRIPTIVE HEADINGS The descriptive headings herein are inserted for convenience only and are not intended to be part of or to affect the meaning or interpretation of this Agreement. SECTION 13. COUNTERPARTS This Agreement may be executed in counterparts, each of which when so executed and delivered shall be an original, but all of such counterparts shall together constitute one and the same instrument. SECTION 14. ENTIRE AGREEMENT; ASSIGNMENT This Agreement (i) constitutes the entire agreement and supersedes all prior agreements and understandings, both written and oral, among the parties hereto with respect to the subject matter hereof and (ii) shall not be assigned by operation of law or otherwise; PROVIDED, HOWEVER, following the Effective Time, this Agreement may be assigned by EOP in the same circumstances as under the Registration Rights Agreement. SECTION 15. NOTICES. All notices, requests, claims, demands and other communications under this Agreement shall be in writing and shall be delivered personally, sent by overnight courier (providing proof of delivery) to the parties or sent by telecopy (providing confirmation of transmission) at the following addresses or telecopy numbers (or at such other address or telecopy number for a party as shall be specified by like notice): -11- (a) if to EOP or EOP Partnership, to: Equity Office Properties Trust EOP Operating Limited Partnership Two N. Riverside Plaza Chicago, IL 60606 Attention: President Chief Counsel Fax No.: (312) 559-5021 with a copy to: Hogan & Hartson L.L.P. 555 Thirteenth Street, N.W. Washington, D.C. 20004-1109 Attention: J. Warren Gorrell, Jr., Esq. George P. Barsness, Esq. Fax No.: (202) 637-5910 (b) if to Cornerstone or Cornerstone Partnership, to: Tower 56 125 East 56th Street, 6th Floor New York, NY 10022 Attention: President Fax No.: (212) 605-7100 with a copy to: King & Spalding 191 Peachtree Street Atlanta, GA 30303-1763 Attention: William B. Fryer, Esq. Fax No.: (404) 572-5100 (c) if to PGGM, to: Stichting Pensioenfonds voor de Gezondheid, Geestelijke en Maatschappelijke Belangen Utrechtseweg 44 3714 HD Zeist The Netherlands Attention: Anneke C. van de Puttelaar Fax No.: 011 3130 696 3388 -12- with a copy to: Richards & O'Neil, LLP 885 Third Avenue New York, NY 10022 Attention: Ann F. Chamberlain, Esq. Fax No.: (212) 750-9022 All notices shall be deemed given only when actually received. SECTION 16. GOVERNING LAW; CONSENT TO JURISDICTION; WAIVER OF JURY TRIAL (a) This Agreement shall be governed by and construed in accordance with the laws of the State of Maryland without regard to the principles of conflicts of laws thereof. (b) PGGM hereby submits and consents to non-exclusive personal jurisdiction in any action, suit or proceeding arising out of this Agreement or the transactions contemplated hereby in a federal court located in the State of Maryland or in a Maryland state court. Any process, summons, notice or document delivered by mail to the address set forth in Section 15 hereof shall be effective service of process for any action, suit or proceeding in any Maryland state court or any federal court located in the State of Maryland with respect to any matters to which PGGM has submitted to jurisdiction in this Section 16. PGGM irrevocably and unconditionally waives any objection to the laying of venue of any action, suit or proceeding arising out of this Agreement or the transactions contemplated hereby in any Maryland state court or any federal court located in the State of Maryland, and hereby irrevocably and unconditionally waives and agrees not to plead or claim in any such court that any such action, suit or proceeding brought in any such court has been brought in an inconvenient forum. PGGM IRREVOCABLY WAIVES TRIAL BY JURY IN ANY ACTION, SUIT OR PROCEEDING WITH RESPECT TO THIS AGREEMENT. SECTION 17. SPECIFIC PERFORMANCE The parties hereto agree that if any of the provisions of this Agreement were not performed in accordance with their specific terms or were otherwise breached, irreparable damage would occur, no adequate remedy at law would exist and damages would be difficult to determine, and that the parties shall be entitled to specific performance of the terms hereof, in addition to any other remedy at law or equity. Nothing contained herein shall release any party from any liability -13- arising from any breach of any of its representations, warranties, covenants or agreements in this Agreement. SECTION 18. CAPACITY OF PGGM AND ITS OFFICERS, DIRECTORS AND EMPLOYEES. PGGM has executed this Agreement solely in its capacity as a stockholder of Cornerstone. Without limiting the foregoing, nothing in this Agreement shall limit or affect any actions taken by any officer, director or employee of PGGM in his capacity as an officer, director, employee or manager of Cornerstone in connection with the exercise of Cornerstone's rights under the Merger Agreement. [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK.] -14- IN WITNESS WHEREOF, the parties hereto have duly executed and delivered this Voting Agreement, or have caused this Voting Agreement to be duly executed and delivered in their names and on their behalf, as of the date first written above. EQUITY OFFICE PROPERTIES TRUST By: /s/ Stanley M. Stevens ---------------------------- Name: Stanley M. Stevens Title: Executive Vice President and Chief Legal Counsel EOP OPERATING LIMITED PARTNERSHIP By: Equity Office Properties Trust, its general partner By: /s/ Stanley M. Stevens ---------------------------- Name: Stanley M. Stevens Title: Executive Vice President and Chief Legal Counsel WCP SERVICES, INC. By: /s/ John S. Moody ---------------------------- Name: John S. Moody Title: President PENSIOENFONDS VOOR DE GEZONDHEID, GEESTELIJKE EN MAATSCHAPPELIJKE BELANGEN By: /s/ Jan H.W.R. van der Vlist ---------------------------------------- Name: Jan H.W.R. van der Vlist Title: Attorney-in-Fact -15- SCHEDULE 1 # OF SHARES NAME OF OF RECORD AND CORNERSTONE BENEFICIAL COMMON TERMS OF OWNER STOCK PLEDGEE PLEDGE PGGM 45,779,703 Not Applicable Not Applicable -16-
Stock Option Agreement - Cornerstone Properties Inc., Equity Office Properties Trust and Deutsche Bank AG
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