Common use of Determination of the Option Rent Clause in Contracts

Determination of the Option Rent. A. The Base Rent payable for each month during each Extended Term shall be set at ninety-five percent (95%) of the then-prevailing fair market rental rate (the “Prevailing Rental Rate”) for renewals of space of equivalent quality, type, size and location in comparable R&D buildings in Menlo Park, with the length of the applicable Extended Term, the then credit standing of Tenant, tenant improvement allowances then being granted in the marketplace and other market rent concessions then being offered in the marketplace to be taken into account. The Prevailing Rental Rate shall include the periodic rental increases, if any, that would be included for space leased for the period the Premises will be covered by the Lease. As used herein, “then-prevailing” shall mean the time period which is six (6) months prior to the commencement of the applicable Extended Term and not the commencement date of the applicable Extended Term. Within thirty (30) days after receipt of Tenant’s notice to renew, Landlord shall deliver to Tenant written notice of Landlord’s determination of the Prevailing Rental Rate and shall advise Tenant of the required adjustment to Base Rent, if any, and the other terms and conditions offered. Tenant shall, within ten (10) days after receipt of Landlord’s notice, time being of the essence with respect thereto, notify Landlord in writing whether Tenant accepts or rejects Landlord’s determination of the Prevailing Rental Rate.

Determination of the Option Rent. A. The Base Rent payable for each month during each Option Extended Term shall be set at ninety-five percent (95%) of the then-prevailing fair market rental rate (the “Prevailing Rental Rate”) for renewals of space of equivalent quality, type, size and location in comparable R&D buildings in Menlo Park, with the length of the applicable Option Extended Term, the then credit standing of Tenant, tenant improvement allowances then being granted in the marketplace and other market rent concessions then being offered in the marketplace to be taken into account. The Prevailing Rental Rate shall include the periodic rental increases, if any, that would be included for space leased for the period the Premises will be covered by the Lease. As used herein, “then-prevailing” shall mean the time period which is six (6) months prior to the commencement of the applicable Option Extended Term and not the commencement date of the applicable Option Extended Term. Within thirty (30) days after receipt of Tenant’s notice to renew, Landlord shall deliver to Tenant written notice of Landlord’s determination of the Prevailing Rental Rate and shall advise Tenant of the required adjustment to Base Rent, if any, and the other terms and conditions offered. Tenant shall, within ten (10) days after receipt of Landlord’s notice, time being of the essence with respect thereto, notify Landlord in writing whether Tenant accepts or rejects Landlord’s determination of the Prevailing Rental Rate.