Premises Expansion. Landlord hereby leases to Tenant and Tenant hereby leases from Landlord the Expansion Premises, as hereinafter defined, on the terms and conditions set forth in the Lease, as amended by this Amendment, effective as of the earlier of # seven (7) months following the date the Expansion Premises is delivered to Tenant (the Expansion Premises shall be delivered to Tenant upon execution of this Amendment) or # the date upon which Tenant commences business operations in the Expansion Premises (the “Expansion Effective Date”). Commencing on the Expansion Effective Date, # the Premises shall consist of the Existing Premises plus an additional 12,085 rentable square feet located on the tenth (10th) floor of the Building, known as Suite 1000 (the “Expansion Premises”), as shown on the plan attached hereto as Exhibit A and made a part hereof, for a total of 31,121 rentable square feet, and # any reference to the term “Premises” in the Lease, as hereby amended, shall mean the Existing Premises together with the Expansion Premises.

Premises Expansion. Landlord hereby leases to Tenant and Tenant hereby leases from Landlord the Expansion Premises, as hereinafter defined, on the terms and conditions set forth in the Lease, as amended by this Amendment, effective as of the earlier of # seven (7) months following the date the Expansion Premises is delivered to Tenant (the Expansion Premises shall be delivered to Tenant upon execution of this Amendment) or # the date upon which Tenant commences business operations in the Expansion Premises (the “Expansion Effective Date”). Commencing on the Expansion Effective Date, # the Premises shall consist of the Existing Premises plus an additional 12,085 rentable square feet located on the tenth (10th) floor of the Building, known as Suite 1000 (the “Expansion Premises”), as shown on the plan attached hereto as Exhibit A and made a part hereof, for a total of 31,121 rentable square feet, and # any reference to the term “Premises” in the Lease, as hereby amended, shall mean the Existing Premises together with the Expansion Premises.

Expansion Premises. Landlord hereby agrees to conditionally waive the Base Rent and the Operating Expenses attributable to the Expansion Premises for ​ after the Expansion Premises Commencement Date (the “Expansion Premises Abatement Period”). Tenant shall be obligated to pay all Base Rent and Operating Expenses attributable to the Original Premises during the Expansion Premises Abatement Period. Except as provided herein and in # above, no amounts due to Landlord under the Lease other than the Base Rent and Operating Expenses referred to above shall be conditionally waived. In the event Tenant commits a material default as defined in the Lease and such default continues beyond any notice and cure period, Base Rent and Operating Expenses coming due thereafter shall not be waived, and all Base Rent and Operating Expenses that Landlord conditionally waived under this provision shall be immediately due and payable by Tenant to Landlord without notice or demand from Landlord. If the Lease expires in accordance with its terms, and does not terminate as a result of a default by Tenant, Landlord agrees to permanently waive the Base Rent and Operating Expenses it has conditionally waived.

Expansion Premises. Effective, April 1, 2021 (“Expansion Commencement Date”), the Existing Premises shall be expanded by approximately 57,760 rentable square feet as depicted on [Exhibit A] attached hereto (the “Expansion Premises”). Accordingly, as of the Expansion Commencement Date, all references in the Lease to the term “Premises” shall hereinafter mean and include the Existing Premises and Expansion Premises (i.e., the entire Building) which will then consist of approximately 64,643 rentable square feet. Landlord and Tenant each acknowledge and agree that the aforesaid description of the size and square footage of the Premises and the Building are an approximation, which the parties agree is reasonable and payments made thereupon are not subject to dispute..

Expansion Premises. Effective as of Expansion Commencement Date, the Existing Lease shall be amended to provide that the Base Rent for the Expansion Premises is as follows:

Expansion Premises. The term of Tenant’s lease of the Expansion Premises is set forth in Section 1.7. Tenant’s lease of the Expansion Premises shall commence on the later to occur of the following dates (the “Expansion Premises Commencement Date”): # date Landlord provides Tenant with written notice that the Expansion Premises is available for Tenant’s occupancy or # January 1, 2021. When the actual Expansion Premises Commencement Date is established by Landlord, Landlord shall accurately complete the letter attached hereto as Exhibit B and Tenant shall, within ten (10) days after Landlord's request, execute the letter and deliver it to Landlord. Tenant's failure to execute the letter within said ten (10) day period shall be a default hereunder and shall constitute Tenant's acknowledgment of the truth of the facts contained in the letter delivered by Landlord to Tenant.

Expansion Premises. Effective as of the Expansion Commencement Date (as defined below), the Premises shall include the entire rentable area located on the 4th floor of the Building, comprising approximately 28,957 rentable square feet (the "Expansion Premises"). From and after the Expansion Commencement Date, all references in the Existing Lease to "Premises" shall mean the Existing Premises and the Expansion Premises. For the avoidance of doubt, all rights of Lessee applicable to the Premises shall apply equally to the Expansion Premises, including, without limitation, 58 (Access), 60 (Non-Disturbance) and 61 (No Relocation); provided, however, the annual original 600 HVAC after-hours usage threshold pursuant to [Section 11.3] shall now apply to the entire Premises. (For clarification purposes, an additional after-hours usage of 600 hours will not be granted.)

Expansion Premises. Tenant shall inform Landlord of the improvements Tenant would like Landlord to make to the Expansion Premises (the “Expansion Premises Improvements”) pursuant to this Addendum Section. Subject to the terms and conditions of this Addendum Section and Section 13 of the Lease, Tenant may commence the construction of the Expansion Premises Improvements at any time after the Expansion Premises Commencement Date.

Expansion Premises. Landlord hereby grants to Tenant an "Expansion Premises Improvement Allowance" of ​, which Expansion Premises Improvement Allowance shall be used only to reimburse Tenant for the actual out-of-pocket costs paid by Tenant to independent third parties for the construction of the Expansion Premises Improvements or payment of the Landlord Fee and the Third Party Fees. After the completion of the construction of the Expansion Premises Improvements, Landlord shall make one (1) disbursement of the Expansion Premises Improvement Allowance. Prior to Landlord making the disbursement, Tenant shall deliver to Landlord: # a request for payment, approved by Tenant, in a form which is reasonably acceptable to Landlord; # invoices from all contractors whose work is being paid with respect to such payment request; # copies of executed mechanic's lien releases from all of the contractors which shall comply with the provisions of California Civil Code Section 8138; # proof that Tenant has previously paid to the contractors the monies described in the payment request; # “as built” plans for the Expansion Premises Improvements and # all other information reasonably requested by Landlord. Within thirty (30) days after Landlord has received all of this information, Landlord shall deliver a check to Tenant in an amount equal to the lesser of # the actual monies paid by Tenant to Tenant's contractors with respect to such payment request plus the Landlord Fee and the Third Party Fees if previously paid by Tenant or # the Expansion Premises Improvement Allowance.

Expansion Premises. Tenant shall continue to pay Base Rent with respect to the Expansion Premises as provided under the Lease through February 28, 2022. Commencing on March 1, 2022, and thereafter on each subsequent March 1st during through the Fifth Amendment Expiration Date (each, an “Expansion Premises Adjustment Date”), Base Rent payable with respect to the Expansion Premises shall be increased by 3% my multiplying the Base Rent payable with respect to the Expansion Premises immediately before such Expansion Premises Adjustment Date by 3% and adding the resulting amount to the Base Rent payable with respect to the Expansion Premises immediately before such Expansion Premises Adjustment Date. For the avoidance of doubt, the parties agree that Base Rent with respect to the Expansion Premises for the period commencing on the Expansion Premises Rent Commencement Date (March 7, 2019) through June 30, 2023 shall be paid in the following amounts: