Common use of Arbitration of Market Rent Clause in Contracts

Arbitration of Market Rent. If Tenant notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experience. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, then the final determination of the Market Rent shall be equal to the average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators shall have ten (10) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work in good faith to conclude the arbitration process.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to the Extension Term, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) business days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two (2) Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its his or her appointment by selecting one or the other of the amounts determined by the other two (2) Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure All Arbitrators appointed hereunder shall be MAI appraisers, so-called, knowledgeable in the field of commercial real estate and experienced in the Arbitratorsmarket in which the Building is located. The foregoing determination shall be conclusive, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; final and binding on the parties shall thereafter continue to work and enforceable in good faith to conclude any court having jurisdiction over the arbitration processparties.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to the Extension Term, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) business days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two (2) Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its his or her appointment by selecting one or the other of the amounts determined by the other two (2) Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure All Arbitrators appointed hereunder shall be licensed real estate brokers with at least ten (10) years’ experience in the leasing of office/laboratory space in buildings similar in character and location to the ArbitratorsPremises. The foregoing determination shall be conclusive, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; final and binding on the parties shall thereafter continue to work and enforceable in good faith to conclude any court having jurisdiction over the arbitration processparties.

Arbitration of Market Rent. If In the event Landlord and Tenant notifies Landlord of Tenant’s objection shall be unable to Landlord’s determination of agree on the then Market Rent and sends a Decision Notice requesting arbitration under for the preceding subsectionpurposes of determining the Base Rent for the Option Term, such Decision Notice shall also then Market Rent (subject to the floor set forth in Section 22.02, clause (y), above) shall be established in the following manner of arbitration: (a) Each of Tenant and Landlord shall choose an arbitrator knowledgeable in the field of establishing fair rental values in the Waltham Class A office market; (b) The arbitrators selected in accordance with “(a)” above shall select a request for arbitration and Tenant’s appointment of an MAI third arbitrator who is a qualified real estate appraiser having with at least ten (10) years’ experience in the appraisal of first class office buildings in the Waltham Class A office and laboratory leasing market in market; (c) The selections shall be completed no later than twenty-one (21) days after Tenant’s notice requiring the Seaport District or arbitration of Market Rent. If any selection is not made within the Longwood Medical Area 21‑day time period, either party may petition the Boston office of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during AAA to make the prior five selection; (5d) years Within thirty (an “Arbitrator”). Within five (530) days thereafterafter their appointment, Landlord the arbitrators shall by notice to Tenant appoint a second Arbitrator having such experience. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term Premises for the Option Term, and shall notify Tenant and Landlord of such determination within thirty seven (307) days after days, which determination shall be final and binding upon Tenant and Landlord’s appointment . If the arbitrators are unable to agree upon the Market Rent, the Market Rent will be deemed to be the average of the Market Rents proposed by the arbitrators, except that (i) if the lowest proposed Market Rent is less than 90% of the second Arbitrator. On or before the expiration of such thirty-(30)-day periodto lowest proposed fair market rent, the two Arbitrators shall confer lowest proposed Market Rent will automatically be deemed to compare their respective determinations be 90% of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal second to ten percent (10%) of the lower of said amounts, then the final determination of the lowest proposed Market Rent shall be equal to and (ii) if the average of said amounts. If such difference between said amounts highest proposed Market Rent is greater than ten percent 110% of the second to highest proposed Market Rent, the highest proposed Market Rent will automatically be deemed to be 110% of the second to highest proposed Market Rent. (10%), then the two Arbitrators shall have ten (10e) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who The foregoing arbitration shall be instructed to determine conducted in accordance with the commercial arbitration rules of the AAA or its successors; (f) Landlord and Tenant shall each pay all costs of the arbitrator it selected and one‑half (½) of all other costs of the arbitration proceedings. For the purpose of determining Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work use as a guideline the average rental rates for similar available office space (and shall value the subject space as 100% office space without regard for any research or laboratory use by Tenant) in good faith to conclude similar office buildings in the arbitration processWaltham market.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to any Extension Term, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ years experience in the Class A office and laboratory commercial leasing market in the Seaport District or municipality where the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years Premises are located (an “Arbitrator”). Within five (5) days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty-(30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its his or her appointment by selecting one or the other of the amounts determined by the other two Arbitrators. The Market Rent so determined shall be the Market Rent for the Extension Term unless otherwise determined pursuant to the last sentence of Section 3.03(b). Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work in good faith to conclude the arbitration process.

Arbitration of Market Rent. If In the event Landlord and Tenant notifies Landlord of Tenant’s objection shall be unable to Landlord’s determination of agree on the Market Rent for the Option Term, the Market Rent shall be established in the following manner of arbitration: (a) Each of Tenant and sends Landlord shall choose an arbitrator knowledgeable in the field of establishing fair rental values in this area; (b) The arbitrators selected in accordance with “ (a) above shall select a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice shall also set forth third arbitrator who is a request for arbitration and Tenant’s appointment of an MAI qualified real estate appraiser having with at least ten (10) years’ experience in the Class A appraisal of first class office and laboratory leasing market buildings in the Seaport District or the Longwood Medical Area suburban Boston area; (c) The selections shall be completed no later than twenty-one (21) days after Tenant’s notice disputing Landlord’s estimate of the City of BostonMarket Rent. If any selection is not made within the 21-day time period, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during may petition the prior five Boston office of the American Arbitration Association to make the selection; (5d) years Within thirty (an “Arbitrator”). Within five (530) days thereafterafter their appointment, Landlord the arbitrators shall by notice to Tenant appoint a second Arbitrator having such experience. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term Demised Premises for the Option Term, and shall notify Tenant and Landlord of such determination within thirty seven (307) days after days, which determination shall be final and binding upon Tenant and Landlord’s appointment . If the arbitrators are unable to agree upon the fair market rent, the Market Rent will be deemed to be the average of the Market Rents proposed by the arbitrators, except that (i) if the lowest proposed Market Rent is less than 90% of the second Arbitrator. On or before the expiration of such thirty-(30)-day periodto lowest proposed Market Rent, the two Arbitrators shall confer lowest proposed Market Rent will automatically be deemed to compare their respective determinations be 90% of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal second to ten percent (10%) of the lower of said amounts, then the final determination of the lowest proposed Market Rent shall be equal to and (ii) if the average of said amounts. If such difference between said amounts highest proposed Market Rent is greater than ten percent 110% of the second to highest proposed Market Rent, the highest proposed Market Rent will automatically be deemed to be 110% of the second to highest proposed Market Rent. (10%), then the two Arbitrators shall have ten (10e) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who The foregoing arbitration shall be instructed to determine conducted in accordance with the rules of the American Arbitration Association or its successors; (f) Landlord and Tenant shall each pay all costs of the arbitrator it selected and one-half (1/2) of all other costs of the arbitration proceedings. For the purpose of determining Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work use as a guideline the average rental rates for similar available space in good faith to conclude similar buildings owned by Landlord or its affiliates in the arbitration processRoute 128 West submarket. It is intended that this instrument will take effect as a sealed instrument.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to the Extension Term, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) business days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two (2) Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to shall, after consultation with the other two (2) Arbitrators, determine the Market Rent for the applicable Extension Term within ten thirty (1030) days after its his or her appointment by selecting one which of the amounts determined by the other two Arbitratorsproposed determinations most closely approximates his or her determination of Market Rent. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure All Arbitrators appointed hereunder shall be MAI appraisers, so-called, knowledgeable in the field of commercial real estate and experienced in the Arbitratorsmarket in which the Building is located. The foregoing determination shall be conclusive, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; final and binding on the parties shall thereafter continue to work and enforceable in good faith to conclude any court having jurisdiction over the arbitration processparties.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to the exercised Extension Term, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) business days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term being exercised within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two (2) Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) business days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to shall, after consultation(s) with the other two (2) Arbitrators, determine the Market Rent for the applicable Extension Term within ten thirty (1030) business days after its his or her appointment by selecting one or the other of the amounts determined by the other two (2) Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure All Arbitrators appointed hereunder shall be MAI appraisers, so-called, knowledgeable in the field of commercial real estate with at least five (5) years’ experience in the Arbitrators, singly or collectively, to complete this process market in which the Building is located and shall not have had any significant business relationship with the party appointing such appraiser within the time frame set forth past eighteen (i18) months. The foregoing determination shall not terminate the Tenant’s exercise of the applicable Extension Termbe conclusive, or (ii) cause the arbitration process to end; final and binding on the parties shall thereafter continue to work and enforceable in good faith to conclude any court having jurisdiction over the arbitration processparties.

Arbitration of Market Rent. If Tenant notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI appraiser having at least ten (10) years’ experience in the Class A office and laboratory commercial leasing market in the Seaport District or the Longwood Medical Area of the City of BostonCambridge, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years Massachusetts (an “Arbitrator”). Within five (5) days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have ten (10) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work in good faith to conclude the arbitration process.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s 's objection to Landlord’s 's determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s 's appointment of an MAI a commercial real estate appraiser or broker having at least ten (10) years’ years experience in the Class A office and laboratory commercial leasing market in the Seaport District or municipality where the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years Premises are located (an “Arbitrator”"ARBITRATOR"). Within five (5) days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s 's appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”"THIRD ARBITRATOR"), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its his or her appointment by selecting one or the other of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure "MARKET RENT" shall be the fair market rent that willing parties would pay and receive as the Base Rent to lease the Premises during the Extension Term under the terms and conditions of this Lease in the condition existing at the commencement of the ArbitratorsExtension Term (or in such better condition as the same are required to be maintained hereunder). In making such determination, singly all relevant factors may be considered, but the Base Rent historically paid under this Lease shall be disregarded. Market Rent may include annual or collectively, to complete this process within periodic increases in the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work in good faith to conclude the arbitration processBase Rent rate if consistent with then prevailing market conditions.

Arbitration of Market Rent. If Tenant notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice notice shall also set forth a request for arbitration and Tenant’s appointment of an MAI appraiser having at least ten (10) years’ experience in the Class A office and laboratory commercial leasing market in the Seaport District or the Longwood Medical Area of the City of BostonCambridge, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years Massachusetts (an “Arbitrator”). Within five (5) days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after Landlord’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have ten (10) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work in good faith to conclude the arbitration process.

Arbitration of Market Rent. If In the event Landlord and Tenant notifies Landlord of Tenant’s objection shall be unable to Landlord’s determination of agree on the then Market Rent for the purposes of determining the Base Rent for the applicable Option Term, then Market Rent shall be established in the following manner of arbitration: (a) Each of Tenant and sends Landlord shall choose an arbitrator knowledgeable in the field of establishing fair rental values in the Waltham Class A office market; (b) The arbitrators selected in accordance with “(a)” above shall select a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice shall also set forth third arbitrator who is a request for arbitration and Tenant’s appointment of an MAI qualified real estate appraiser having with at least ten (10) years’ experience in the appraisal of first class office buildings in the Waltham Class A office and laboratory leasing market in market; (c) The selections shall be completed no later than twenty-one (21) days after Tenant’s notice requiring the Seaport District or arbitration of Market Rent. If any selection is not made within the Longwood Medical Area 21-day time period, either party may petition the Boston office of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during AAA to make the prior five selection; (5d) years Within thirty (an “Arbitrator”). Within five (530) days thereafterafter their appointment, Landlord the arbitrators shall by notice to Tenant appoint a second Arbitrator having such experience. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term Premises for the Option Term, and shall notify Tenant and Landlord of such determination within thirty seven (307) days after days, which determination shall be final and binding upon Tenant and Landlord’s appointment . If the arbitrators are unable to agree upon the Market Rent, the Market Rent will be deemed to be the average of the Market Rents proposed by the arbitrators, except that (i) if the lowest proposed Market Rent is less than 90% of the second Arbitrator. On or before the expiration of such thirty-(30)-day periodto lowest proposed fair market rent, the two Arbitrators shall confer lowest proposed Market Rent will automatically be deemed to compare their respective determinations be 90% of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal second to ten percent (10%) of the lower of said amounts, then the final determination of the lowest proposed Market Rent shall be equal to and (ii) if the average of said amounts. If such difference between said amounts highest proposed Market Rent is greater than ten percent 110% of the second to highest proposed Market Rent, the highest proposed Market Rent will automatically be deemed to be 110% of the second to highest proposed Market Rent. (10%), then the two Arbitrators shall have ten (10e) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who The foregoing arbitration shall be instructed to determine conducted in accordance with the commercial arbitration rules of the AAA or its successors; (f) Landlord and Tenant shall each pay all costs of the arbitrator it selected and one-half (1/2) of all other costs of the arbitration proceedings. For the purpose of determining Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work use as a guideline the average rental rates for similar available office space (and shall value the subject space as 100% office space without regard for any research or laboratory use by Tenant) in good faith to conclude similar office buildings in the arbitration processWaltham market.

Arbitration of Market Rent. If Tenant timely notifies Landlord of Tenant’s objection to Landlord’s determination of Market Rent and sends a Decision Notice requesting arbitration under the preceding subsectionsubsection with respect to the Extension Term, such Decision Notice notice shall also set forth a request for arbitration and TenantXxxxxx’s appointment of an MAI a commercial real estate appraiser having at least ten (10) years’ experience in the Class A office and laboratory leasing market in the Seaport District or the Longwood Medical Area of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during the prior five (5) years (an “Arbitrator”). Within five (5) business days thereafter, Landlord shall by notice to Tenant appoint a second Arbitrator having such experienceArbitrator. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term within thirty (30) days after LandlordXxxxxxxx’s appointment of the second Arbitrator. On or before the expiration of such thirty-(30)-day thirty (30) day period, the two Arbitrators shall confer to compare their respective determinations of the Market Rent. If the difference between the amounts so determined by the two (2) Arbitrators is less than or equal to ten percent (10%) of the lower of said amounts, amounts then the final determination of the Market Rent shall be equal to the arithmetical average of said amounts. If such difference between said amounts is greater than ten percent (10%), then the two Arbitrators arbitrators shall have within ten (10) days thereafter to appoint a similarly qualified third Arbitrator (the “Third Arbitrator”), who shall be instructed to determine the Market Rent for the applicable Extension Term within ten (10) days after its his or her appointment by selecting one or the other of the amounts determined by the other two (2) Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and TenantXxxxxx. Failure All Arbitrators appointed hereunder shall be MAI appraisers, so-called, knowledgeable in the field of commercial real estate and experienced in the Arbitratorsmarket in which the Building is located. The foregoing determination shall be conclusive, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; final and binding on the parties shall thereafter continue to work and enforceable in good faith to conclude any court having jurisdiction over the arbitration processparties.

Arbitration of Market Rent. If In the event Landlord and Tenant notifies Landlord of Tenant’s objection shall be unable to Landlord’s determination of agree on the then Market Rent for the purposes of determining the Base Rent for the applicable Option Term, then Market Rent shall be established in the following manner of arbitration: (a) Each of Tenant and sends Landlord shall choose an arbitrator knowledgeable in the field of establishing fair rental values in the Waltham Class A office market; (b) The arbitrators selected in accordance with “(a)” above shall select a Decision Notice requesting arbitration under the preceding subsection, such Decision Notice shall also set forth third arbitrator who is a request for arbitration and Tenant’s appointment of an MAI qualified real estate appraiser having with at least ten (10) years’ experience in the appraisal of first class office buildings in the Waltham Class A office and laboratory leasing market in market; (c) The selections shall be completed no later than twenty-one (21) days after Xxxxxx’s notice requiring the Seaport District or arbitration of Market Rent. If any selection is not made within the Longwood Medical Area 21-day time period, either party may petition the Boston office of the City of Boston, Massachusetts, and who shall not be affiliated with either Landlord or Tenant and has not worked for either party or its affiliates at any time during AAA to make the prior five selection; (5d) years Within thirty (an “Arbitrator”). Within five (530) days thereafterafter their appointment, Landlord the arbitrators shall by notice to Tenant appoint a second Arbitrator having such experience. Each Arbitrator shall be advised to determine the Market Rent for the applicable Extension Term Premises for the Option Term, and shall notify Tenant and Landlord of such determination within thirty seven (307) days after days, which determination shall be final and binding upon Tenant and Landlord’s appointment . If the arbitrators are unable to agree upon the Market Rent, the Market Rent will be deemed to be the average of the Market Rents proposed by the arbitrators, except that (i) if the lowest proposed Market Rent is less than 90% of the second Arbitrator. On or before the expiration of such thirty-(30)-day periodto lowest proposed fair market rent, the two Arbitrators shall confer lowest proposed Market Rent will automatically be deemed to compare their respective determinations be 90% of the Market Rent. If the difference between the amounts so determined by the two Arbitrators is less than or equal second to ten percent (10%) of the lower of said amounts, then the final determination of the lowest proposed Market Rent shall be equal to and (ii) if the average of said amounts. If such difference between said amounts highest proposed Market Rent is greater than ten percent 110% of the second to highest proposed Market Rent, the highest proposed Market Rent will automatically be deemed to be 110% of the second to highest proposed Market Rent. (10%), then the two Arbitrators shall have ten (10e) days thereafter to appoint a third Arbitrator (the “Third Arbitrator”), who The foregoing arbitration shall be instructed to determine conducted in accordance with the commercial arbitration rules of the AAA or its successors; (f) Landlord and Tenant shall each pay all costs of the arbitrator it selected and one-half (1/2) of all other costs of the arbitration proceedings. For the purpose of determining Market Rent for the applicable Extension Term within ten (10) days after its appointment by selecting one of the amounts determined by the other two Arbitrators. Each party shall bear the cost of the Arbitrator selected by such party. The cost for the Third Arbitrator, if any, shall be shared equally by Landlord and Tenant. Failure of the Arbitrators, singly or collectively, to complete this process within the time frame set forth (i) shall not terminate the Tenant’s exercise of the applicable Extension Term, or (ii) cause the arbitration process to end; the parties shall thereafter continue to work use as a guideline the average rental rates for similar available office space (and shall value the subject space as 100% office space without regard for any research or laboratory use by Tenant) in good faith to conclude similar office buildings in the arbitration processWaltham market.