EX-10.12



 Exhibit 10.12 

LEASE AGREEMENT 
 By and Between

 WESTPORT OFFICE PARK, LLC, 

a California limited liability company 

(“Landlord”) 
 and 

ALLAKOS INC., 
 a
Delaware corporation 
 (“Tenant”) 

January 4, 2018 







 TABLE OF CONTENTS 
  

							
	 	  	 	  	Page	 
	ARTICLE 1. 	  	PREMISES; COMMON AREAS	  	 	4	
	ARTICLE 2.	  	TERM AND CONDITION OF PREMISES	  	 	5	
	ARTICLE 3.	  	USE, NUISANCE, OR HAZARD	  	 	6	
	ARTICLE 4.	  	RENT	  	 	7	
	ARTICLE 5.	  	RENT ADJUSTMENT	  	 	9	
	ARTICLE 6.	  	SERVICES TO BE PROVIDED BY LANDLORD	  	 	19	
	ARTICLE 7.	  	REPAIRS AND MAINTENANCE BY LANDLORD	  	 	20	
	ARTICLE 8.	  	REPAIRS AND CARE OF PREMISES BY TENANT	  	 	21	
	ARTICLE 9.	  	TENANT’S EQUIPMENT AND INSTALLATIONS	  	 	22	
	ARTICLE 10.	  	FORCE MAJEURE	  	 	23	
	ARTICLE 11.	  	CONSTRUCTION, MECHANICS’ AND MATERIALMAN’S LIENS	  	 	23	
	ARTICLE 12.	  	ARBITRATION	  	 	24	
	ARTICLE 13.	  	INSURANCE	  	 	24	
	ARTICLE 14.	  	QUIET ENJOYMENT	  	 	26	
	ARTICLE 15.	  	ALTERATIONS	  	 	26	
	ARTICLE 16.	  	FURNITURE, FIXTURES, AND PERSONAL PROPERTY	  	 	29	
	ARTICLE 17.	  	PERSONAL PROPERTY AND OTHER TAXES	  	 	30	
	ARTICLE 18.	  	ASSIGNMENT AND SUBLETTING	  	 	30	
	ARTICLE 19.	  	DAMAGE OR DESTRUCTION	  	 	35	
	ARTICLE 20.	  	CONDEMNATION	  	 	37	
	ARTICLE 21.	  	HOLD HARMLESS	  	 	38	
	ARTICLE 22.	  	DEFAULT BY TENANT	  	 	39	
	ARTICLE 23.	  	INTENTIONALLY OMITTED	  	 	43	
	ARTICLE 24.	  	INTENTIONALLY OMITTED	  	 	43	
	ARTICLE 25.	  	ATTORNEYS’ FEES	  	 	43	
	ARTICLE 26.	  	NON-WAIVER	  	 	44	
	ARTICLE 27.	  	RULES AND REGULATIONS	  	 	44	
	ARTICLE 28.	  	ASSIGNMENT BY LANDLORD; RIGHT TO LEASE	  	 	44	
	ARTICLE 29.	  	LIABILITY OF LANDLORD	  	 	45	
	ARTICLE 30.	  	SUBORDINATION AND ATTORNMENT	  	 	45	


  
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	ARTICLE 31.	  	HOLDING OVER	  	 	47	
	ARTICLE 32.	  	SIGNS	  	 	47	
	ARTICLE 33.	  	HAZARDOUS SUBSTANCES	  	 	48	
	ARTICLE 34.	  	COMPLIANCE WITH LAWS AND OTHER REGULATIONS	  	 	54	
	ARTICLE 35.	  	SEVERABILITY	  	 	56	
	ARTICLE 36.	  	NOTICES	  	 	56	
	ARTICLE 37.	  	OBLIGATIONS OF, SUCCESSORS, PLURALITY, GENDER	  	 	56	
	ARTICLE 38.	  	ENTIRE AGREEMENT	  	 	57	
	ARTICLE 39.	  	CAPTIONS	  	 	57	
	ARTICLE 40.	  	CHANGES	  	 	57	
	ARTICLE 41.	  	AUTHORITY	  	 	57	
	ARTICLE 42.	  	BROKERAGE	  	 	58	
	ARTICLE 43.	  	EXHIBITS	  	 	58	
	ARTICLE 44.	  	APPURTENANCES	  	 	58	
	ARTICLE 45.	  	PREJUDGMENT REMEDY, REDEMPTION, COUNTERCLAIM, AND JURY	  	 	58	
	ARTICLE 46.	  	RECORDING	  	 	59	
	ARTICLE 47.	  	MORTGAGEE PROTECTION	  	 	59	
	ARTICLE 48.	  	OTHER LANDLORD CONSTRUCTION	  	 	59	
	ARTICLE 49.	  	PARKING	  	 	60	
	ARTICLE 50.	  	ELECTRICAL CAPACITY	  	 	61	
	ARTICLE 51.	  	OPTION TO EXTEND LEASE	  	 	61	
	ARTICLE 52.	  	TELECOMMUNICATIONS LINES AND EQUIPMENT	  	 	64	
	ARTICLE 53.	  	ERISA	  	 	65	
	ARTICLE 54.	  	TENANT’S RIGHT OF FIRST OFFER	  	 	65	
	ARTICLE 55.	  	TENANT’S ROOFTOP RIGHTS	  	 	68	
	ARTICLE 56.	  	GENERATOR	  	 	70	
	ARTICLE 57.	  	LETTER OF CREDIT	  	 	71	
	ARTICLE 58.	  	REASONABLE APPROVALS	  	 	75	


  
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 LEASE AGREEMENT 

THIS LEASE AGREEMENT, (this “Lease”) is made and entered into as of January 4, 2018 by and between WESTPORT OFFICE PARK, LLC, a
California limited liability company (“Landlord”), and Tenant identified in the Basic Lease Information below. 
 BASIC LEASE
INFORMATION 
 Tenant: ALLAKOS INC., a Delaware corporation 

Premises: The second floor of the Building, containing approximately 25,194 square feet of rentable area, outlined in
Exhibit B to this Lease. 
 Building: The Building commonly known as 975 Island Drive, Redwood City, California
94065. The rentable area of the Building is 50,444 square feet. 
 Base Rent: 

 

					
	 Period
(In Months)
	  	Annual
Base Rent	  	Monthly
Base Rent
	01 – 09	  	Abated*	  	Abated*
	10 – 12	  	N/A	  	$99,516.30
	13 – 24	  	$1,230,021.48	  	$102,501.79
	25 – 36	  	$1,266,922.08	  	$105,576.84
	37 – 48	  	$1,304,929.80	  	$108,744.15
	49 – 60	  	$1,344,077.64	  	$112,006.47
	61 – 72	  	$1,384,400.04	  	$115,366.67
	73 – 84	  	$1,425,932.04	  	$118,827.67
	85 – 96	  	$1,468,710.00	  	$122,392.50
	97 – 108	  	$1,512,771.24	  	$126,064.27
	109 – 120	  	$1,558,154.40	  	$129,846.20
	121 – 129	  	N/A	  	$133,741.59

  

	 	*	As an inducement to Tenant entering into this Lease, so long as no Monetary Default or other material Event of Default shall have occurred and be continuing under this Lease, Base Rent in the amount of $99,516.30 per
month shall be abated for the first nine (9) months commencing as of the Commencement Date, or if the Commencement Date is other than the first day of a calendar month, commencing as of the first day of the first full calendar month of the
Term. The amount of Base Rent set forth in the foregoing table for that period reflects that rent abatement. During such abatement period, Tenant shall still be responsible for the payment of all of its other monetary obligations under the Lease.


 Security Deposit Amount: $802,449.54. In the event Tenant delivers to Landlord the Letter of Credit meeting the
requirements of Article 57 of this Lease upon Tenant’s execution and delivery of this Lease, Tenant shall be deemed to have irrevocably elected to provide that 

  
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Letter of Credit as required by Article 57 and the Security Deposit Amount shall be reduced to $0.00. If Tenant does not deliver the Letter of Credit in accordance with Article 57
with its execution and delivery of this Lease, Tenant shall instead provide a cash Security Deposit in the Security Deposit Amount upon its execution and delivery of this Lease and Article 57 shall be of no further force or effect. 

Rent Payable Upon Execution: $129,749.10 

Tenant’s Building Percentage: 49.94% 

Tenant’s Common Area Building Percentage: 2.53% 

Commencement Date: The earlier of (i) the date Tenant commences business operations in the Premises, or (ii) the later of
(a) the date of Substantial Completion (as defined in the Tenant Work Letter attached hereto as Exhibit C) of the Premises and tender of delivery of possession of the Premises to Tenant, or (b) February 1,
2018. 
 Expiration Date: The date that is the day prior to the day that is one hundred twenty-nine (129) months after the Commencement
Date. If the Expiration Date falls on a day other than the last day of the calendar month, then, the Expiration Date shall be extended to the last day of the calendar month in which the day that the Term of this Lease would otherwise end but for
this proviso occurs, and the Term of this Lease shall be extended accordingly. 
 Landlord’s Address: 

c/o PGIM Real Estate 
 4
Embarcadero Center, 27th Floor 
 San Francisco, CA 94111 

Attn: PRISA II Asset Management 

With a copy by the same method to: 

c/o PGIM Real Estate 
 7 Giralda
Farms 
 Madison, New Jersey 07940 

Attention: James Marinello, Esquire 

With a copy by the same method to: 

Harvest Properties, Inc. 
 6425
Christie Avenue, Suite 220 
 Emeryville, California 94608 

Attention: Joss Hanna 
 Address
for rental payment: 
 Payments via FedEx/UPS/Courier: 

JP Morgan Chase 

  
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 2710 Media Center Dr. 

Building #6, Suite #120 
 Los
Angeles, CA 90065 
 Attn: PREI’s Westport Office Park/100170 

Payments via regular mail (lockbox address): 

Remit to: PREI’s Westport Office Park #171201 

P. O. Box 100170 
 Pasadena, CA
91189-0170 
 Payments via either FED wire or ACH wire: 

Bank Account Name: 
 Harvest
Properties, Inc. LLC, 
 as agent for PREI’s Westport Office Park 

Bank Account Number 
 Bank Name:
JP Morgan Chase Bank, N.A. 
 Bank City & State Location: Baton Rouge, LA 

ABA Routing Number: 

Tenant’s Address: 
 75
Shoreway Road, Suite A 
 San Carlos, CA 94070 

Attention: Chief Financial Officer 

(If on or after the Commencement Date to the Premises) 

Attention: Chief Financial Officer 

Landlord’s Broker: Cushman & Wakefield. 

Tenant’s Broker: T3 Advisors. 

Maximum Parking Allocation: Eighty-three (83), which is based on a parking ratio of 3.3 non-exclusive
parking spaces per one thousand (1,000) square feet of rentable space in the Premises. 
 Tenant Improvement Allowance: $1,385,670.00 

The Basic Lease Information is incorporated into and made part of this Lease. Each reference in this Lease to any Basic Lease Information
shall mean the applicable information set forth in the Basic Lease Information, except that in the event of any conflict between an item in the Basic Lease Information and this Lease, this Lease shall control. Additional defined terms used in the
Basic Lease Information shall have the meanings given those terms in this Lease. 

  
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 ARTICLE 1. 

PREMISES; COMMON AREAS 
 1.1
Subject to all of the terms and conditions hereinafter set forth, Landlord hereby leases to Tenant and Tenant hereby leases from Landlord the Premises. The property shown on Exhibit A to this Lease and all improvements
thereon and appurtenances on that land thereto, including, but not limited to, the Building, other office buildings, access roadways, and all other related areas, shall be collectively hereinafter referred to as the “Project.” Tenant
acknowledges and agrees that Landlord may elect to sell one or more of the buildings within the Project and that upon any such sale Tenant’s pro-rata share of those Operating Expenses and Taxes (each as
defined below) allocated to the areas of the Project other than buildings may be adjusted accordingly by Landlord. The parties hereto hereby acknowledge that the purpose of Exhibit A and Exhibit B
are to show the approximate location of the Premises in the Building and the general layout of the Project and such Exhibits are not meant to constitute an agreement, representation or warranty as to the construction of the Premises, the Building or
the Project, the precise area of the Premises, the Building or the Project or the specific location of the Building, “Common Areas,” as that term is defined in Section 1.3, below, or the elements thereof or of the
accessways to the Premises, or the Project, or the identity or existence of any other tenant or occupant of the Project. 
 1.2 For purposes
of this Lease, (1) “rentable area” and “usable area” shall be calculated pursuant to the Standard Method for Measuring Floor Area in Office Buildings (ANSI/BOMA Z65.1, 1996); (2) “rentable square feet” and
“rentable footage” shall have the same meaning as the term “rentable area;” and (3) “usable square feet” and “usable square footage” shall have the same meaning as the term “usable area.”
Notwithstanding anything to the contrary in this Lease, although the recital of the rentable area herein above set forth is for descriptive purposes only, it shall be deemed binding upon both parties. Tenant shall have no right to terminate this
Lease or receive any adjustment or rebate of any Base Rent or Additional Rent (as hereinafter defined) payable hereunder if said recital is incorrect. Tenant has inspected the Premises and is fully familiar with the scope and size thereof and agrees
to pay the full Base Rent and Additional Rent set forth herein in consideration for the use and occupancy of said space, regardless of the actual number of square feet contained therein. 

1.3 Tenant shall have the non-exclusive right to use in common with other tenants in the Project, and
subject to the rules and regulations referred to in Article 27 of this Lease, those portions of the Project which are provided, from time to time, for use in common by Landlord, Tenant and any other tenants of the Project
(such areas are collectively referred to herein as the “Common Areas”). The Common Areas shall consist of the “Project Common Areas” and the “Building Common Areas.” The term “Project Common Areas,” as used in
this Lease, shall mean the portion of the Project reasonably designated as such by Landlord. The term “Building Common Areas,” as used in this Lease, shall mean the portions of the Common Areas located within the Building reasonably
designated as such by Landlord. The manner in which the Common Areas are maintained and operated shall be at the reasonable discretion of Landlord and the use thereof shall be subject to such reasonable and
non-discriminatory rules, regulations and restrictions as Landlord may make from time to time. Landlord reserves the right to close temporarily, make alterations or additions to, or change the location of
elements of the Project and the Common Areas; provided that in exercising its rights under this sentence, 

  
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Landlord shall make commercially reasonable efforts to minimize the disruption to Tenant’s business operations during standard business hours. Subject to “Applicable Laws,” as that
term is defined in Section 5.1(a) of this Lease, except when and where Tenant’s right of access is specifically excluded in this Lease, and except in the event of an emergency, Tenant shall have the right of access to
the Premises, the Building, and the parking facilities servicing the Building twenty-four (24) hours per day, seven (7) days per week during the “Term,” as that term is defined in Section 2.1, below.

 ARTICLE 2. 
 TERM AND
CONDITION OF PREMISES 
 2.1 The term of this Lease (the “Term”) shall commence on the Commencement Date and end on the Expiration
Date, unless sooner terminated (the “Termination Date”) as hereinafter provided. The Commencement Date of this Lease and the obligation of Tenant to pay Base Rent, Additional Rent and all other charges hereunder shall not be delayed or
postponed by reason of any delay by Tenant in performing changes or alterations in the Premises not required to be performed by Landlord. In the event the Term shall commence on a day other than the first day of a month, then the Base Rent shall be
paid when due for such partial month prorated in accordance with Section 4.4 below. In the event Landlord shall deliver to Tenant a Commencement Date Memorandum in the form attached hereto as
Exhibit F, setting forth the Commencement Date and the Expiration Date, then Tenant shall execute and return such Commencement Date Memorandum to Landlord within ten (10) days after Tenant’s receipt thereof.
Tenant’s failure to execute such Commencement Date Memorandum shall not affect Tenant’s liability hereunder. 
 2.2 Except as
expressly set forth in this Lease and in the Tenant Work Letter attached hereto as Exhibit C (the “Tenant Work Letter”), Landlord shall not be obligated to provide or pay for any improvement, remodeling or
refurbishment work or services related to the improvement, remodeling or refurbishment of the Premises, and Tenant shall accept the Premises in its “As Is” condition on the Commencement Date. 

2.3 The taking of possession of the Premises by Tenant shall be conclusive evidence that the Premises and the portion of the Building in which
the Premises is located were in good and satisfactory condition at such time. Neither Landlord nor Landlord’s agents have made any representations or promises with respect to the condition of the Building, the Premises, the land upon which the
Building is constructed, or any other matter or thing affecting or related to the Building or the Premises, except as herein expressly set forth, and no rights, easements or licenses are acquired by Tenant by implication or otherwise except as
expressly set forth in this Lease. 
 2.4 Notwithstanding Section 2.3 above, Landlord warrants that the roof,
structural components of the Building, HVAC system, electrical and plumbing systems, elevator, parking lot or site lighting (the “Covered Items”), other than those constructed by Tenant, shall be in good operating condition on the date
possession of the Premises is delivered to Tenant. If a non-compliance with such warranty exists as of the delivery of possession, or if one of such Covered Items should malfunction or fail within sixty
(60) days after the delivery of possession to Tenant, Landlord shall, as Landlord’s sole obligation with respect to such matter, promptly 

  
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after receipt of written notice from Tenant setting forth in reasonable detail the nature and extent of such non-compliance, malfunction or failure,
rectify the same at Landlord’s expense. If Tenant does not give Landlord the required notice within sixty (60) days after the delivery of possession to Tenant, Landlord shall have no obligation with respect to that warranty other than
obligations regarding the Covered Items set forth elsewhere in this Lease. 
 ARTICLE 3. 

USE, NUISANCE, OR HAZARD 
 3.1 The
Premises shall be used and occupied by Tenant solely for general office purposes, Biological Safety Laboratory (BSL), biology labs, chemistry labs, dry lab, and light storage consistent with Comparable Buildings and for no other purposes without the
prior written consent of Landlord. 
 3.2 Tenant shall not use, occupy, or permit the use or occupancy of the Premises for any purpose which
Landlord, in its reasonable discretion, deems to be illegal or dangerous; permit any public or private nuisance; do or permit any act or thing which may disturb the quiet enjoyment of any other tenant of the Project; keep any substance or carry on
or permit any operation which might introduce offensive odors or conditions into other portions of the Project, use any apparatus which might make undue noise or set up vibrations in or about the Project; permit anything to be done which would
increase the premiums paid by Landlord for special causes of loss form property insurance on the Project or its contents or cause a cancellation of any insurance policy covering the Project or any part thereof or any of its contents; or permit
anything to be done which is prohibited by or which shall in any way conflict with any law, statute, ordinance, or governmental rule, regulation or covenants, conditions and restrictions affecting the Project, including without limitation the
CC&R’s (as defined below) now or hereinafter in force. Should Tenant do any of the foregoing without the prior written consent of Landlord, and the same is not cured within five (5) business days after notice from Landlord (which five
(5) business day period shall be subject to extension if the nature of the breach is such that it is not possible to cure the same within such five (5) business day period so long as the Tenant commences the cure of such breach within such
five (5) day period and diligently prosecutes the same to completion) it shall constitute an Event of Default (as hereinafter defined) and shall enable Landlord to resort to any of its remedies hereunder. 

3.3 The ownership, operation, maintenance and use of the Project may in the future be subject to certain conditions and restrictions contained
in an instrument (“CC&R’s”) to be recorded against title to the Project. Tenant agrees that regardless of when those CC&R’s are so recorded, this Lease and all provisions hereof shall be subject and subordinate thereto
and Tenant shall comply therewith; provided, however, that except as required by Applicable Laws (as defined below), Tenant’s obligation to comply with CC&R’s recorded after the date of this Lease shall be subject to Tenant’s
prior consent, which will not be withheld unless the same would materially adversely affect Tenant’s rights under this Lease. Accordingly, as a consequence of that subordination, during any period in which the entire Project is not owned by
Landlord, (a) the portion of Operating Expenses and Taxes (each as defined below) for the Common Areas shall be allocated among the owners of the Project as provided in the CC&R’s, and (b) the CC&R’s shall govern the
maintenance and insuring of the portions of the Project not owned by Landlord. Tenant shall, promptly upon request of Landlord, sign all reasonable documents reasonably required to carry out the foregoing into effect. 

  
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 ARTICLE 4. 

RENT 
 4.1 Tenant hereby agrees to
pay Landlord the Base Rent. For purposes of Rent adjustment under the Lease, (a) if the Commencement Date falls on a date that is prior to the 15th day of the calendar month, the number of months is measured from the first day of the calendar
month in which the Commencement Date falls, or (b) if the Commencement Date falls on a date that is the 15th or a later day of the calendar month, the number of months is measured from the first day of the calendar month after the calendar
month in which the Commencement Date falls. Each monthly installment (the “Monthly Rent”) shall be payable by check or by money order on or before the first day of each calendar month. In addition to the Base Rent, Tenant also agrees to
pay Tenant’s Share of Operating Expenses and Taxes (each as hereinafter defined), and any and all other sums of money as shall become due and payable by Tenant as set forth in this Lease, all of which shall constitute additional rent under this
Lease (the “Additional Rent”). Landlord expressly reserves the right to apply any payment received to Base Rent or any other items of Rent that are not paid by Tenant. The Base Rent, the Monthly Rent and the Additional Rent are sometimes
hereinafter collectively called “Rent” and shall be paid when due in lawful money of the United States without demand, deduction, abatement, or offset to the addresses for the rental payment set forth in the Basic Lease Information, or as
Landlord may designate from time to time. 
 4.2 In the event any Monthly or Additional Rent or other amount payable by Tenant hereunder is
not paid within five (5) days after its due date, Tenant shall pay to Landlord a late charge (the “Late Charge”), as Additional Rent, in an amount of five percent (5%) of the amount of such late payment. Failure to pay any Late Charge
shall be deemed a Monetary Default (as hereinafter defined). Provision for the Late Charge shall be in addition to all other rights and remedies available to Landlord hereunder, at law or in equity, and shall not be construed as liquidated damages
or limiting Landlord’s remedies in any manner. Failure to charge or collect such Late Charge in connection with any one (1) or more such late payments shall not constitute a waiver of Landlord’s right to charge and collect such Late
Charges in connection with any other similar or like late payments. Notwithstanding the foregoing provisions of this Section 4.2, the Late Charge shall not be imposed with respect to the first late payment in any calendar
year during the Term unless the applicable payment due from Tenant is not received by Landlord within five (5) days following written notice from Landlord that such payment was not received when due. Following the first such written notice from
Landlord in any calendar year during the Term (but regardless of whether such payment has been received within such five (5) day period), the Late Charge will be imposed without notice for any subsequent payment due from Tenant during such
calendar year which is not received within five (5) days after its due date. 
 4.3 Simultaneously with the execution hereof, Tenant
shall deliver to Landlord (i) the Rent Payable Upon Execution as payment of the first full installment of Monthly Rent and Tenant’s Share of Operating Expenses and Taxes due hereunder and (ii) an amount equal to the Security Deposit
Amount to be held by Landlord as security for Tenant’s faithful 

  
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performance of all of the terms, covenants, conditions, and obligations required to be performed by Tenant hereunder (the “Security Deposit”). The Security Deposit shall be held by
Landlord as security for the performance by Tenant of all of the covenants of this Lease to be performed by Tenant and Tenant shall not be entitled to interest thereon. The Security Deposit is not an advance rent deposit, an advance payment of any
other kind, or a measure of Landlord’s damages in any case of Tenant’s default. If Tenant fails to perform any of the covenants of this Lease to be performed by Tenant within applicable notice and cure periods, including without limitation
the provisions relating to payment of Rent, the removal of property at the end of the Term, the repair of damage to the Premises caused by Tenant, and the cleaning of the Premises upon termination of the tenancy created hereby, then Landlord shall
have the right, but no obligation, to apply the Security Deposit, or so much thereof as may be necessary, for the payment of any Rent or any other sum in default and/or to cure any other such failure by Tenant. If Landlord applies the Security
Deposit or any part thereof for payment of such amounts or to cure any such other failure by Tenant, then Tenant shall immediately pay to Landlord the sum necessary to restore the Security Deposit to the full amount then required by this
Section 4.3. Landlord’s obligations with respect to the Security Deposit are those of a debtor and not a trustee. Landlord shall not be required to maintain the Security Deposit separate and apart from Landlord’s
general or other funds and Landlord may commingle the Security Deposit with any of Landlord’s general or other funds. Upon termination of the original Landlord’s or any successor owner’s interest in the Premises or the Building, the
original Landlord or such successor owner shall be released from further liability with respect to the Security Deposit upon the original Landlord’s or such successor owner’s complying with California Civil Code Section 1950.7.
Subject to the foregoing, Tenant hereby waives the provisions of Section 1950.7 of the California Civil Code, and all other provisions of law, now or hereafter in force, to the extent such provisions (a) establish a time frame within which
a landlord must refund a security deposit under a lease, and/or (b) provide that Landlord may claim from a security deposit only those sums reasonably necessary to remedy defaults in the payment of Rent, to repair damage caused by Tenant or to
clean the Premises, it being agreed that Landlord may, in addition, claim those sums reasonably necessary to compensate Landlord for any other loss or damage caused by the default of Tenant under this Lease, including without limitation all damages
or Rent due upon termination of this Lease pursuant to Section 1951.2 of the California Civil Code. So long as no Event of Default then remains uncured and no amounts due Landlord from Tenant under this Lease remain unpaid, the unused portion
of the Security Deposit shall be returned to Tenant or the last assignee of Tenant’s interest under this Lease within thirty (30) days following expiration or termination of the Term of this Lease. Subject to the remaining terms of this
Section 4.3, and provided the Reduction Conditions (as defined below) have been satisfied at the reduction effective date, Tenant shall have the right to reduce the amount of the Security Deposit so that the new Security
Deposit amount shall be $401,224.77 effective as of the first day of the later of the forty-sixth (46th) month of the Term or the month following the date Tenant meets the Reduction Conditions. If
Tenant is entitled to a reduction in the Security Deposit, Tenant shall provide Landlord with written notice requesting that the Security Deposit be reduced as provided above (the “Reduction Notice”). If Tenant provides Landlord with a
Reduction Notice, and Tenant is entitled to reduce the Security Deposit as provided herein, Landlord shall refund the applicable portion of the Security Deposit to Tenant within thirty (30) days after the later to occur of
(a) Landlord’s receipt of the Reduction Notice, or (b) the date upon which Tenant is entitled to a 

  
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reduction in the Security Deposit as provided above. The term “Reduction Conditions” means the following conditions have been satisfied: 

(a) Either of the following shall have occurred: (i) an initial public offering of equity securities of Tenant under the
Securities Act of 1933, as amended, which results in Tenant’s stock being traded on a national securities exchange, including, but not limited to, the NYSE, the NASDAQ Stock Market or the NASDAQ Small Cap Market System or any sale thereafter of
such equity securities on such national securities exchanges, or (ii) an infusion of not less than $70,000,000.00 of additional equity capital in Tenant as evidenced by Tenant’s most current audited financial statement (the “Financial
Condition”); and 
 (b) No Event of Default shall have occurred and be continuing under this Lease. 

For the avoidance of doubt, the Financial Condition shall be deemed satisfied as of the first day of the forty-sixth (46th) month of the Term
if such Financial Condition is satisfied prior to the execution and delivery of this Lease. 
 4.4 If the Term commences on a date other
than the first day of a calendar month or expires or terminates on a date other than the last day of a calendar month, the Rent for any such partial month shall be prorated to the actual number of days in such partial month. 

4.5 All Rents and any other amount payable by Tenant to Landlord hereunder, if not paid when due, shall bear interest from the date due until
paid at a rate equal to the prime commercial rate established from time to time by Bank of America, plus four percent (4%) per annum; but not in excess of the maximum legal rate permitted by law. Failure to charge or collect such interest in
connection with any one (1) or more delinquent payments shall not constitute a waiver of Landlord’s right to charge and collect such interest in connection with any other or similar or like delinquent payments. 

ARTICLE 5. 
 RENT ADJUSTMENT 

5.1 Definitions. 

(a) “Operating Expenses”, as said term is used herein, shall mean all expenses, costs, and disbursements of every
kind and nature which Landlord shall pay or become obligated to pay because of or in connection with the ownership, operation, management, security, repair, restoration, replacement, or maintenance of the Project, or any portion thereof. Operating
Expenses shall be computed in accordance with generally accepted real estate practices, consistently applied, and shall include, but not be limited to, the items as listed below: 

(i) Wages, salaries, other compensation and any and all taxes, insurance and benefits of, the Project manager and of all other
persons engaged in the operation, maintenance and security of the Project; 

  
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 (ii) Payments under any equipment rental agreements or management agreements,
including without limitation the cost of any actual or charged management fee and all expenses for the Project management office including rent, office supplies, and materials therefor; 

(iii) Costs of all supplies, equipment, materials, and tools and amortization (including interest on the unamortized cost) of
the cost of acquiring or the rental expense of personal property used in the maintenance, operation and repair of the Project, or any portion thereof; 

(iv) All costs incurred in connection with the operation, maintenance, and repair of the Project including without limitation,
the following: (A) the cost of operation, repair, maintenance and replacement of all systems, including without limitation laboratory ventilation systems and emissions control systems, and equipment and components thereof of the Project;
(B) the cost of janitorial, alarm, security and other services, replacement of wall and floor coverings, ceiling tiles and fixtures in common areas, maintenance and replacement of curbs and walkways, repair to roofs and re-roofing; (C) the cost of licenses, certificates, permits and inspections and the cost of contesting any governmental enactments which are-reasonably anticipated by
Landlord to increase Operating Expenses, and the cost incurred in connection with a transportation system management program or similar program; and (D) the cost of landscaping, decorative lighting, and relamping, the cost of maintaining
fountains, sculptures, bridges; and (E) costs, fees, charges or assessments imposed by, or resulting from any mandate imposed on Landlord by, any federal, state or local government for fire, public health and police protection, trash and
regulated waste disposal and removal, community services, or other services which do not constitute “Taxes” as that term is defined below. 

(v) The cost of supplying all utilities, the cost of operating, maintaining, repairing, replacing, renovating and managing the
utility systems, mechanical systems, ventilation systems, sanitary, storm drainage systems, communication systems and escalator and elevator systems, and the cost of supplies, tools, and equipment and maintenance and service contracts in connection
therewith. 
 (vi) Costs and expenses of complying with, or participating in, conservation, recycling, sustainability,
energy efficiency, waste reduction or other programs or practices reasonably implemented or enacted from time to time at the Building, including, without limitation, in connection with any LEED (Leadership in Energy and Environmental Design) rating
or compliance system or program, including that currently coordinated through the U.S. Green Building council or Energy Star rating and/or compliance system or program (collectively, “Conservation Costs”); 

  
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 (vii) The cost of all insurance carried by Landlord in connection with the
Project as reasonably determined by Landlord, including without limitation commercial general liability insurance, physical damage insurance covering damage or other loss caused by fire, earthquake, flood or other water damage, explosion, vandalism
and malicious mischief, theft or other casualty, rental interruption insurance, environmental insurance and such insurance as may be required by any lessor under any present or future ground or underlying lease of the Building or Project or any
holder of a mortgage, deed of trust or other encumbrance now or hereafter in force against the Building or Project or any portion thereof, and any deductibles payable thereunder; including, without limitation, Landlord’s cost of any self
insurance deductible or retention provided that Landlord’s cost of any self-insurance shall not exceed the cost that would have been payable for a policy covering the same risks as to which Landlord is self-insuring; 

(viii) Capital improvements made to or capital assets acquired for the Project, or any portion thereof, after the Commencement
Date that (1) are intended to reduce Operating Expenses, or (2) are necessary for the health, safety, environmental protection and/or security of the Project, its occupants and visitors and are deemed advisable in the reasonable judgment
of Landlord, or (3) are Conservation Costs, or (4) are required under any and all applicable laws, statutes, codes, ordinances, orders, rules, regulations, conditions of approval and requirements of all federal, state, county, municipal
and governmental authorities and all administrative or judicial orders or decrees and all permits, licenses, approvals and other entitlements issued by governmental entities, and rules of common law, relating to or affecting the Project, the
Premises or the Building or the use or operation thereof, whether now existing or hereafter enacted, including, without limitation, the Americans with Disabilities Act of 1990, 42 USC 12111 et seq. (the “ADA”) as the same may be amended
from time to time, all Environmental Requirements (as hereinafter defined), and any CC&R’s, or any corporation, committee or association formed in connection therewith, or any supplement thereto recorded in any official or public records
with respect to the Project or any portion thereof (collectively, “Applicable Laws”), which capital costs, or an allocable portion thereof, shall be amortized over the useful life of the capital item as reasonably determined by Landlord,
together with interest on the unamortized balance at a rate reasonably determined by Landlord; 
 (ix) fees, charges and
other costs, including management fees (or amounts in lieu thereof), consulting fees, legal fees and accounting fees, of all contractors, engineers, consultants and other persons engaged by Landlord or otherwise incurred by or charged by Landlord in
connection with the management, operation, maintenance, incident response and repair of the Buildings and the Project; and 

(x) payments, fees or charges under the CC&R’s and any easement, license, operating agreement, declaration,
restricted covenant, or instrument pertaining to the sharing of costs by the Project, or any portion thereof. 

  
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 Expressly excluded from Operating Expenses are the following items: 

(xi) Repairs and restoration paid for by the proceeds of any insurance policies or amounts otherwise reimbursed to Landlord or
paid by any other source (other than by tenants paying their share of Operating Expenses); 
 (xii) Principal, interest, and
other costs directly related to financing the Project or ground lease rental or depreciation; 
 (xiii) The cost of special
services to tenants (including Tenant) for which a special charge is made; 
 (xiv) The costs of repair of casualty damage
or for restoration following condemnation to the extent covered by insurance proceeds or condemnation awards; 
 (xv) The
costs of any capital expenditures except as expressly permitted to be included in Operating Expenses as provided under clauses (vii), and (viii) above; 

(xvi) Advertising and leasing commissions; costs, including permit, license and inspection costs and supervision fees,
incurred with respect to the installation of tenant improvements within the Project or incurred in renovating or otherwise improving, decorating, painting or redecorating vacant space within the Project or promotional or other costs in order to
market space to potential tenants; 
 (xvii) The legal fees and related expenses and legal costs incurred by Landlord
(together with any damages awarded against Landlord) due to the violation by Landlord or any tenant of the terms and conditions of any lease of space in the Project; 

(xviii) Costs incurred: (x) to comply with Applicable Laws with respect to or otherwise due to the presence of any
Hazardous Materials (as defined below) which were in existence in, on, under or about the Project (or any portion thereof) prior to the Commencement Date; and/or (y) with respect to Hazardous Materials which are disposed of or otherwise
introduced into, on, under or about the Project after the date hereof; provided, however, Operating Expenses shall include costs incurred in connection with the clean-up, remediation, monitoring, management
and administration of (and defense of claims related to) the presence of (1) Hazardous Materials used by Landlord (provided such use is not negligent and is in compliance with Applicable Laws) in connection with the operation, repair and
maintenance of the Project to perform Landlord’s obligations under this Lease (such as, without lithitation, fuel oil for generators, cleaning solvents, and lubricants) and which are customarily found or used in Comparable Buildings and
(2) Hazardous Materials created, released or placed in the Premises, Building or the Project by Tenant (or Tenant’s affiliates or their tenants, contractors, employees or agents) prior to or after the Commencement Date; 

  
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 (xix) The attorneys’ fees in connection with the negotiation and preparation
of letters, deal memos, letters of intent, leases, subleases and/or assignments, space planning costs, and other costs and expenses incurred in connection with lease, sublease and/or assignment negotiations and transactions with present or
prospective tenants or other occupants of the Project; 
 (xx) The expenses in connection with services or other benefits
which are not available or are separately charged to Tenant; 
 (xxi) The overhead and profit paid to Landlord or to
subsidiaries or affiliates of Landlord for goods and/or services in the Project to the extent the same exceeds the costs of such goods and/or services rendered by qualified, unaffiliated third parties on a competitive basis; 

(xxii) The costs arising from Landlord’s charitable or political contributions; 

(xxiii) The costs (other than ordinary maintenance and insurance) for sculpture, paintings and other objects of art; 

(xxiv) The interest and penalties resulting from Landlord’s failure to pay any items of Operating Expense when due; 

(xxv) The Landlord’s general corporate overhead and general and administrative expenses, costs of entertainment, dining,
automobiles or travel for Landlord’s employees, and costs associated with the operation of the business of the partnership or entity which constitutes Landlord as the same are distinguished from the costs of the operation of the Project,
including partnership accounting and legal matters, costs of defending any lawsuits with any mortgagee, costs of selling, syndicating, financing, mortgaging or hypothecating any of Landlord’s interest in the Project, costs of any disputes
between Landlord and its employees (if any) not engaged in the operation of the Project, disputes of Landlord with management, or outside fees paid in connection with disputes with other Project tenants or occupants (except to the extent such
dispute is based on Landlord’s good faith efforts to benefit Tenant or meet Landlord’s obligations under this Lease); 

(xxvi) The costs arising from the gross negligence or willful misconduct of Landlord; 

(xxvii) The management office rental to the extent such rental exceeds the fair market rental for such space; 

(xxviii) The costs of correction of defects in the Project to the extent covered by warranties; 

  
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 (xxix) The costs of Landlord’s membership in professional organizations
(such as, by way of example and without limitation, BOMA) in excess of $2,500.00 per year; 
 (xxx) During the initial Term
only, insurance deductibles or self-insurance retention or uninsured casualty damage which in any Lease Year exceed $50,000 with respect to the Building; provided, however, if the amount of the deductible exceeds that annual limitation, Landlord may
carry over the unrecovered portion of any deductible into the subsequent lease years and recover them from Tenant subject to the annual limitation provided for in this Section 5.1(a)(xxx); 

(xxxi) Management fees retained by Landlord or its affiliates in excess of an amount equal to five percent (5%) of all gross
receipts for the Project; 
 (xxxii) Costs to remedy a condition existing prior to the Commencement Date which an applicable
governmental authority, if it had knowledge of such condition prior to the Commencement Date and if such condition was not subject to a variance or a grandfathered code waiver exception, would have then required to be remedied pursuant to the then
current Applicable Laws in their form existing as of the Commencement Date; 
 (xxxiii) Reserves for future expenses;
provided, however, the foregoing shall not prohibit Landlord from passing through to Tenant (as an Operating Expense) items includable in Operating Expenses pursuant to the Lease once such items have been purchased from an existing reserve or once
the expenses covered by such reserve have been incurred; and 
 (xxxiv) Costs to repair, maintain or replace any of the
structural components of the Building or the Project, including but not limited to the Building foundation, structural floor slab, structural components of the roof, structural components of the external walls and structural components of the
internal structural walls. 
 (b) “Taxes” shall mean all real property taxes, ad valorem taxes, personal
property taxes, and all other taxes, assessments, use and occupancy taxes, transit taxes, water, sewer and pure water charges not included in Section 5.1.(a)(v) above, excises, levies, license fees or taxes, and all other
similar charges, levies, penalties, or taxes, if any, which are levied, assessed, or imposed, by any Federal, State, county, or municipal authority, whether by taxing districts or authorities presently in existence or by others subsequently created,
upon, or due and payable in connection with, or a lien upon, all or any portion of the Project, or facilities used in connection therewith, and rentals or receipts therefrom and all taxes of whatsoever nature that are imposed in substitution for or
in lieu of any of the taxes, assessments, or other charges included in its definition of Taxes, and any costs and expenses of contesting the validity of same. Taxes shall include, without limitation: (i) Any tax on the rent, right to rent or
other income from the 

  
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Project, or any portion thereof, or as against the business of leasing the Project, or any portion thereof; (ii) Any assessment, tax, fee, levy or charge in addition to, or in substitution,
partially or totally, of any assessment, tax, fee, levy or charge previously included within the definition of real property tax, it being acknowledged by Tenant and Landlord that Proposition 13 was adopted by the voters of the State of
California in the June 1978 election (“Proposition 13”) and that assessments, taxes, fees, levies and charges may be imposed by governmental agencies for such services as fire protection, street, sidewalk and road maintenance, refuse
removal and for other governmental services formerly provided without charge to property owners or occupants, and, in further recognition of the decrease in the level and quality of governmental services and amenities as a result of
Proposition 13, Taxes shall also include any governmental or private assessments or the Project’s contribution towards a governmental or private cost-sharing agreement for the purpose of augmenting or improving the quality of services and
amenities normally provided by governmental agencies; (iii) Any assessment, tax, fee, levy, or charge allocable to or measured by the area of the Premises, the tenant improvements in the Premises, or the Rent payable hereunder, including,
without limitation, any business or gross income tax or excise tax with respect to the receipt of such rent, or upon or with respect to the possession, leasing, operating, management, maintenance, alteration, repair, use or occupancy by Tenant of
the Premises, or any portion thereof; (iv) Any assessment, tax, fee, levy or charge, upon this transaction or any document to which Tenant is a party, creating or transferring an interest or an estate in the Premises; (v) All of the real
estate taxes and assessments imposed upon or with respect to the Buildings and all of the real estate taxes and assessments imposed on the land and improvements comprising the Project, and (vi) assessments attributable to the Project by any
governmental or quasi-governmental agency that Landlord is required to pay. For purposes of this Lease, Taxes shall be calculated as if the tenant improvements in the Buildings were fully constructed and the Project, the Buildings, and all tenant
improvements in the Buildings were fully assessed for real estate tax purposes, and accordingly, Taxes shall be deemed to be increased appropriately. Notwithstanding anything to the contrary contained in this
Section 5.1(b), there shall be excluded from Taxes (1) all excess profits taxes, franchise taxes, gift taxes, documentary, transfer taxes, capital stock taxes, inheritance and succession taxes, estate taxes, federal
and state net income taxes, and other taxes to the extent applicable to Landlord’s net income (as opposed to rents, receipts or income attributable to operations at the Project), (ii) any items included as Operating Expenses, and (iii) any
items paid by Tenant under Section 17.1 of this Lease, and (iv) any tax or assessment expense or any increase therein (a) in excess of the amount (including interest) which would be payable if such tax or
assessment expense were paid in installments over the longest permitted term (except to the extent inconsistent with the general practice of Comparable Buildings); or (b) imposed on land and improvements other than the Project. 

(c) “Lease Year” shall mean the twelve (12) month period commencing January 1st and ending
December 31st. 
 (d) “Tenant’s Building Percentage” shall mean Tenant’s percentage of the
entire Building as determined by dividing the Rentable Area of the Premises by the total Rentable Area of the Building. If there is a change in the total Building Rentable 

  
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Area as a result of an addition to the Building, partial destruction, modification or similar cause, which event causes a reduction or increase on a permanent basis, Landlord shall cause
adjustments in the computations as shall be necessary to provide for any such changes. Landlord shall segregate Operating Expenses into two (2) separate categories, one (1) such category, to be applicable only to Operating Expenses
incurred for the Building and the other category applicable to Operating Expenses incurred for the Common Areas and/or the Project as a whole, which shall not include any Operating Expenses allocable solely to other buildings in the Project;
provided that Landlord may enter into contracts and/or provide services with respect to multiple buildings and allocate the cost of such contracts and/or services among such buildings. Two (2) Tenant’s Building Percentages shall apply, one
(1) such Tenant’s Building Percentage shall be calculated by dividing the Rentable Area of the Premises by the total Rentable Area in the Building (“Tenant’s Building Only Percentage”), and the other Tenant’s Building
Percentage to be calculated by dividing the Rentable Area of the Premises by the total Rentable Area of all buildings in the Project (“Tenant’s Common Area Building Percentage”). Consequently, any reference in this Lease to
“Tenant’s Building Percentage” shall mean and refer to both Tenant’s Building Only Percentage and Tenant’s Common Area Building Percentage of Operating Expenses. 

(e) “Tenant’s Tax Percentage” shall mean the percentage determined by dividing the Rentable Area of the
Premises by the total Rentable Area of all buildings in the Project. 
 (f) “Market Area” shall mean the
Redwood Shores submarket of Redwood City, California (the “City”). 
 (g) “Comparable Buildings”
shall mean comparable Class “A” office/R&D/ use buildings in the Market Area. 
 5.2 Tenant shall pay to Landlord, as
Additional Rent, Tenant’s Share (as hereinafter defined) of the Operating Expenses. “Tenant’s Share” shall be determined by multiplying Operating Expenses for any Lease Year or pro rata portion thereof, by Tenant’s Building
Percentage. Landlord shall, in advance of each Lease Year, estimate what Tenant’s Share will be for such Lease Year based, in part, on Landlord’s operating budget for such Lease Year, and Tenant shall pay Tenant’s Share as so
estimated each month (the “Monthly Escalation Payments”). The Monthly Escalation Payments shall be due and payable at the same time and in the same manner as the Monthly Rent. 

5.3 Landlord shall, within one hundred fifty (150) days after the end of each Lease Year, or as soon thereafter as reasonably possible,
provide Tenant with a written statement of the actual Operating Expenses incurred during such Lease Year for the Project and such statement shall set forth Tenant’s Share of such Operating Expenses. Tenant shall pay Landlord, as Additional
Rent, the difference between Tenant’s Share of Operating Expenses and the amount of Monthly Escalation Payments made by Tenant attributable to said Lease Year, such payment to be made within thirty (30) days of the date of Tenant’s
receipt of said statement (except as provided in Section 5.4 below); similarly, Tenant shall receive a credit (or a cash payment if future Monthly Escalation Payments are insufficient for a credit) if Tenant’s Share is


  
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less than the amount of Monthly Escalation Payments collected by Landlord during said Lease Year, such credit to be applied to future Monthly Escalation Payments to become due hereunder. If
utilities, janitorial services or any other components of Operating Expenses increase during any Lease Year, Landlord may revise Monthly Escalation Payments due during such Lease Year by giving Tenant written notice to that effect; and thereafter,
Tenant shall pay, in each of the remaining months of such Lease Year, a sum equal to the amount of the revised difference in Operating Expenses multiplied by Tenant’s Building Percentage divided by the number of months remaining in such Lease
Year. 
 5.4 Within sixty (60) days following Tenant’s receipt of the Operating Expense statement or Taxes statement, Tenant may
give Landlord notice (the “Review Notice”) stating that Tenant elects to review Landlord’s calculation of the amount of Operating Expenses or Taxes payable by Tenant for the Lease Year to which such statement applies and identifying
with reasonable specificity the records of Landlord reasonably relating to such matters that Tenant desires to review. Tenant may not deliver more than one (1) Review Notice with respect to any Lease Year. If Tenant fails to give Landlord such
a Review Notice within that sixty (60) day period, Tenant shall be deemed to have approved the applicable statement. If Tenant timely gives the Review Notice, Tenant shall be entitled to conduct or require an audit to be conducted, provided
that (a) not more than one (1) such audit may be conducted during any Lease Year of the Term, (b) the records for each Lease Year may be audited only once, (c) such audit is commenced within ninety (90) days following
Tenant’s receipt of the applicable statement, and (d) such audit is completed and a copy thereof is delivered to Landlord within one hundred eighty (180) days following Tenant’s receipt of the applicable statement. Tenant’s
auditor must be a member of a nationally or regionally recognized accounting firm and must not charge a fee based on the amount that the accountant is able to save Tenant by the inspection. As a condition precedent to any inspection by Tenant’s
accountant, Tenant shall deliver to Landlord such accountant’s written agreement that (i) such accountant will not in any manner solicit any other tenant of the Project with respect to an audit or other review of Landlord’s accounting
records at the Project, and (ii) such accountant shall maintain in strict confidence on commercially reasonable terms any and all information obtained in connection with the review and shall not disclose such information to any person or entity
other than to the management personnel of Tenant. An overcharge of Operating Expenses or Taxes by Landlord shall not entitle Tenant to terminate this Lease. No subtenant shall have the right to audit. Any assignee’s audit right will be limited
to the period after the effective date of the assignment. No audit shall be permitted if an Event of Default by Tenant has occurred and is continuing under this Lease, including without limitation any failure by Tenant to pay any amount due under
this Article 5 within applicable notice and cure periods. If Landlord responds to any such audit with an explanation of any issues raised in the audit, such issues shall be deemed resolved unless Tenant responds to Landlord with
further written objections within thirty (30) days after receipt of Landlord’s response to the audit. In no event shall payment of Rent ever be contingent upon the performance of such audit. For purposes of any audit, Tenant or
Tenant’s duly authorized representative, at Tenant’s sole cost and expense, shall have the right, upon fifteen (15) days’ written notice to Landlord, to inspect Landlord’s books and records pertaining to Operating Expenses
and Taxes at the offices of Landlord or Landlord’s managing agent during ordinary business hours, provided that such audit must be conducted so as not to interfere with Landlord’s business operations and must be reasonable as to scope and
time. If actual Operating Expenses or Taxes are finally determined (by agreement of the parties, arbitration or a court of competent 

  
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jurisdiction) to have been overstated or understated by Landlord for any calendar year, then the parties shall within thirty (30) days thereafter make such adjustment payment or refund as is
applicable, and if actual Operating Expenses and Taxes are finally determined (by agreement of the parties, arbitration or a court of competent jurisdiction) to have been overstated by Landlord for any calendar year by in excess of seven
percent (7%), then Landlord shall pay the reasonable cost of Tenant’s audit, not to exceed $5,000.00. 
 5.5 If the occupancy of
the Building during any part of any Lease Year is less than one hundred percent (100%), Landlord shall make an appropriate adjustment of the variable components of Operating Expenses for that Lease Year, as reasonably determined by Landlord using
sound accounting and management principles, to determine the amount of Operating Expenses that would have been incurred had the Building been one hundred percent (100%) occupied. This amount shall be considered to have been the amount of Operating
Expenses for that Lease Year. For purposes of this Section 5.5, “variable components” include only those component expenses that are affected by variations in occupancy levels. 

5.6 Tenant shall pay to Landlord, as Additional Rent, “Tenant’s Tax Share” (as hereinafter defined) of the Taxes.
“Tenant’s Tax Share” shall be determined by multiplying Taxes for any Lease Year or pro rata portion thereof, by Tenant’s Tax Percentage. Landlord shall, in advance of each Lease Year, estimate what Tenant’s Tax Share will
be for such Lease Year and Tenant shall pay Tenant’s Tax Share as so estimated each month (the “Monthly Tax Payments”). The Monthly Tax Payments shall be due and payable at the same time and in the same manner as the Monthly Rent.

 5.7 Landlord shall, within one hundred fifty (150) days after the end of each Lease Year, or as soon thereafter as reasonably
possible, provide Tenant with a written statement of the actual Taxes incurred during such Lease Year for the Project and such statement shall set forth Tenant’s Tax Share of such Taxes. Tenant shall pay Landlord, as Additional Rent, the
difference between Tenant’s Tax Share of Taxes and the amount of Monthly Tax Payments made by Tenant attributable to said Lease Year, such payment to be made within thirty (30) days of the date of Tenant’s receipt of said statement;
similarly, Tenant shall receive a credit (or a cash payment if future Monthly Tax Payments are insufficient for such a credit) if Tenant’s Tax Share is less than the amount of Monthly Tax Payments collected by Landlord during said Lease Year,
such credit to be applied to future Monthly Tax Payments to become due hereunder. If Taxes increase during any Lease Year, Landlord may revise Monthly Tax Payments due during such Lease Year by giving Tenant written notice to that effect; and,
thereafter, Tenant shall pay, in each of the remaining months of such Lease Year, a sum equal to the amount of revised difference in Taxes multiplied by Tenant’s Tax Percentage divided by the number of months remaining in such Lease Year.
Despite any other provision of this Article 5, Landlord may adjust Operating Expenses and/or Taxes and submit a corrected statement to account for Taxes or other government public-sector charges (including utility charges) that are for that
given year but that were first billed to Landlord after the date that is ten (10) business days before the date on which the statement was furnished. 

5.8 If the Taxes for any Lease Year are changed as a result of protest, appeal or other action taken by a taxing authority, the Taxes as so
changed shall be deemed the Taxes for such Lease Year. Any expenses incurred by Landlord in attempting to protest, reduce or minimize Taxes shall be included in Taxes in the Lease Year in which those expenses are paid. Landlord shall have the
exclusive right to conduct such contests, protests and appeals of the Taxes as Landlord shall determine is appropriate in Landlord’s sole discretion. 

  
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 5.9 Tenant’s obligation with respect to Additional Rent and the payment of Tenant’s
Share of Operating Expenses and Tenant’s Tax Share of Taxes shall survive the Expiration Date or Termination Date of this Lease. 

ARTICLE 6. 
 SERVICES TO BE
PROVIDED BY LANDLORD 
 6.1 Subject to Articles 5 and 10 herein, Landlord agrees to furnish or cause to be
furnished to the Premises the utilities and services described in the Standards for Utilities and Services, attached hereto as Exhibit G, subject to the conditions and in accordance with the standards set forth herein. 

6.2 Subject to clause (e) of Exhibit G, Landlord shall not be liable for any loss or damage arising or alleged to arise in
connection with the failure, stoppage, or interruption of any such services; nor shall the same be construed as an eviction of Tenant, work an abatement of Rent, entitle Tenant to any reduction in Rent, or relieve Tenant from the operation of any
covenant or condition herein contained; it being further agreed that Landlord reserves the right to discontinue temporarily such services or any of them at such times as may be necessary by reason of repair or capital improvements performed within
the Project, accident, unavailability of employees, repairs, alterations or improvements, or whenever by reason of strikes, lockouts, riots, acts of God, or any other happening or occurrence beyond the reasonable control of Landlord. In the event of
any such failure, stoppage or interruption of services, Landlord shall use reasonable diligence to have the same restored. Neither diminution nor shutting off of light or air or both, nor any other effect on the Project by any structure erected or
condition now or hereafter existing on lands adjacent to the Project, shall affect this Lease, abate Rent, or otherwise impose any liability on Landlord. Furthermore, Landlord shall not be liable under any circumstances for a loss of, or injury to,
property or for injury to, or interference with, Tenant’s business, including, without limitation, loss of profits, however occurring, through or in connection with or incidental to a failure to furnish any of the services or utilities as set
forth in this Article 6. 
 6.3 Landlord shall have the right to reduce heating, cooling, or lighting within the
Premises and in the public area in the Building as required by any mandatory fuel or energy-saving program. 
 6.4 Unless otherwise provided
by Landlord, Tenant shall separately arrange with the applicable local public authorities or utilities, as the case may be, for the furnishing of and payment of all telephone and facsimile services as may be required by Tenant in the use of the
Premises. Tenant shall directly pay for such telephone and facsimile services as may be required by Tenant in the use of the Premises, including the establishment and connection thereof, at the rates charged for such services by said authority or
utility; and the failure of Tenant to obtain or to continue to receive such services for any reason whatsoever shall not relieve Tenant of any of its obligations under this Lease. 

  
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 6.5 Landlord shall have the exclusive right, but not the obligation, to provide any locksmithing
services, and Landlord shall also have the non-exclusive right, but not the obligation, upon Tenant’s request only, to provide any additional services which may be required by Tenant, including without
limitation additional repairs and maintenance, provided that Tenant shall pay to Landlord upon billing, the sum of all costs to Landlord of such additional services plus an administration fee agreed upon in advance by the parties. If Tenant requests
the Landlord provide locksmithing services and Landlord declines, then Tenant shall not be obligated to use Landlord’s locksmithing services. Charges for any utilities or service for which Tenant is required to pay from time to time hereunder,
shall be deemed Additional Rent hereunder and shall be billed on a monthly basis. 
 6.6 At all times during the Term Landlord shall have
the right to reasonably select the utility company or companies that shall provide electric, telecommunication and/or other utility services to the Premises and, subject to all Applicable Laws, Landlord shall have the right at any time and from time
to time during the Term to either (a) contract for services from electric, telecommunication and/or other utility service provider(s) other than the provider with which Landlord has a contract as of the date of this Lease (the “Current
Provider”), or (b) continue to contract for services from the Current Provider. The cost of such utility services and any energy management and procurements services in connection therewith shall be Operating Expenses. 

6.7 If Tenant is billed directly by a public utility with respect to Tenant’s electrical usage at the Premises, upon request from time to
time, Tenant shall provide monthly electrical utility usage for the Premises to Landlord for the period of time requested by Landlord (in electronic or paper format) or, at Landlord’s option, provide any written authorization or other
documentation required for Landlord to request information regarding Tenant’s electricity usage with respect to the Premises directly from the applicable utility company. 

ARTICLE 7. 
 REPAIRS AND
MAINTENANCE BY LANDLORD 
 7.1 Landlord shall provide for the cleaning and maintenance of the public portions of the Project and Common
Areas in keeping with the ordinary standard for Comparable Buildings as part of Operating Expenses. Unless otherwise expressly stipulated herein, Landlord shall not be required to make any improvements or repairs of any kind or character to the
Premises during the Term, except such repairs as may be required to the exterior walls, corridors, windows, roof, Building systems, including, electrical, plumbing, HVAC, utility and mechanical systems and other Base Building (as defined below)
elements and other structural elements and equipment of the Project, and subject to Section 13.4, below, such additional maintenance as may be necessary because of the damage caused by persons other than Tenant, its agents,
employees, licensees, or invitees. As used in this Lease, the “Base Building” shall include the structural portions of the Building, and the public restrooms, elevators, exit stairwells and the systems and equipment located in the internal
core of the Building on the floor or floors on which the Premises are located. 

  
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 7.2 Landlord or Landlord’s officers, agents, and representatives (subject to any security
regulations imposed by any governmental authority) shall have the right to enter all parts of the Premises at all reasonable hours upon one (1) business day prior notice to Tenant (other than in an emergency) to inspect, clean, make repairs,
alterations, and additions to the Project or the Premises which it may deem necessary or desirable, to make repairs to adjoining spaces, to cure any defaults of Tenant hereunder that Landlord elects to cure pursuant to
Section 22.5, below, to post notices of nonresponsibility, to show the Premises to prospective tenants (during the final nine (9) months of the Term or at any time after the occurrence of an Event of Default that
remains uncured), mortgagees or purchasers of the Building, or to provide any service which it is obligated or elects to furnish to Tenant; and Tenant shall not be entitled to any abatement or reduction of Rent by reason thereof. Landlord shall have
the right to enter the Premises at any time and by any means in the case of an emergency. 
 7.3 Except as otherwise expressly provided in
this Lease, Landlord shall not be liable for any failure to make any repairs or to perform any maintenance and there shall be no abatement of rent and no liability of Landlord by reason of any injury to or interference with Tenant’s business
arising from the making of any repairs, alterations or improvements in or to any portion of the Project, Building or the Premises or in or to fixtures, and equipment therein. Tenant hereby waives all rights it would otherwise have under California
Civil Code Sections 1932(1) and 1942(a), or any similar law, statute or ordinance now or hereafter in effect, to make repairs at Landlord’s expense, to deduct repair costs from Rent and/or terminate this Lease as the result of any failure
by Landlord to maintain or repair. 
 ARTICLE 8. 

REPAIRS AND CARE OF PREMISES BY TENANT 

8.1 If the Building, the Project, or any portion thereof, including but not limited to, the elevators, boilers, engines, pipes, and other
apparatus, or members of elements of the Building (or any of them) used for the purpose of climate control or ventilation of the Building or operating of the elevators, or of the water pipes, sewerage or drainage pipes, electric lighting, or other
equipment of the Building or the roof or outside walls of the Building and also the Premises improvements, including but not limited to, the carpet, wall coverings, doors, and woodwork, become damaged or are destroyed through the negligence,
carelessness, or misuse of Tenant, its servants, agents, employees, or anyone permitted by Tenant to be in the Building, or through it or them, then the reasonable cost of the necessary repairs, replacements, or alterations shall be borne by Tenant
who shall pay the same to Landlord as Additional Rent within ten (10) days after demand, subject to Section 13.4 below. Landlord shall have the exclusive right, but not the obligation, to make any repairs necessitated
by such damage. 
 8.2 Subject to Section 13.4 below, Tenant agrees, at its sole cost and expense, to repair or
replace any damage or injury done to the Project, or any part thereof, caused by Tenant, Tenant’s agents, employees, licensees, or invitees which Landlord elects not to repair. Tenant shall not injure the Project or the Premises and, subject to
Article 7 above, at Tenant’s sole cost and expense, shall maintain the Premises, including without limitation all improvements, fixtures and furnishings therein, in good order, repair and condition at all times during the Term. If Tenant
fails to keep such elements of the Premises in such good order, condition, and repair as required hereunder to the satisfaction of Landlord, Landlord may restore the Premises to such good order and condition and make such repairs without liability
to Tenant for any loss or damage that may accrue to Tenant’s property or business by reason thereof, and 

  
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within ten (10) days after completion thereof, Tenant shall pay to Landlord, as Additional Rent, upon demand, the cost of restoring the Premises to such good order and condition and of the
making of such repairs, plus an additional charge of ten percent (10%) thereof. Upon the Expiration Date or the Termination Date, Tenant shall surrender and deliver up the Premises to Landlord in the same condition in which it existed at the
Commencement Date, excepting only ordinary wear and tear, casualty, condemnation, alterations Tenant is permitted to surrender and damage arising from any cause not required to be repaired by Tenant. Upon the Expiration Date or the Termination Date,
Landlord shall have the right to re-enter and take possession of the Premises. Notwithstanding anything to the contrary in this Lease, Tenant shall have no obligation to restore the Tenant Improvements set
forth on Exhibit C or any improvements existing in the Premises prior to the Commencement Date. 
 8.3 Tenant shall provide its own
janitorial and cleaning services to the Premises at Tenant’s sole cost and expense. Landlord is not obligated to provide any janitorial or cleaning services to the Premises. 

ARTICLE 9. 
 TENANT’S
EQUIPMENT AND INSTALLATIONS 
 9.1 If heat-generating machines or equipment, including telephone equipment, cause the temperature in the
Premises, or any part thereof, to exceed the temperatures the Building’s air conditioning system would be able to maintain in such Premises were it not for such heat-generating equipment, then Landlord reserves the right to install
supplementary air conditioning units in the Premises, and the cost thereof, including the cost of installation and the cost of operation and maintenance thereof, including water, shall be paid by Tenant to Landlord within ten (10) days after
demand by Landlord. 
 9.2 Except for desk or table-mounted typewriters, adding machines, office calculators, dictation equipment, personal
computers, computer servers, telecommunication equipment, fume hoods, emission control systems biosafety or chemical storage cabinets, autoclaves, and other similar office and lab equipment consistent with the Permitted Use (the “Permitted
Equipment”), Tenant shall not install within the Premises any fixtures, equipment, facilities, or other improvements without the specific written consent of Landlord, subject to Article 15, below. Tenant shall not,
without the specific written consent of Landlord (which consent shall not be unreasonably withheld, conditioned, or delayed), install or maintain any apparatus or device within the Premises which shall increase the usage of electrical power or water
for the Premises to an amount greater than would be normally required for general office and lab use for space of comparable size in the Market Area; and if any such apparatus or device is so installed, Tenant agrees to furnish Landlord a written
agreement to pay for any additional costs of utilities as the result of said installation. Tenant shall install at Tenant’s sole cost and expense an emon demon or comparable meter to measure electrical usage of the laboratory in the Premises
and Tenant shall pay for the cost of all such electrical service for that lab area so separately metered within thirty (30) days after invoice. Tenant shall keep that meter and installation equipment in good working order and repair at
Tenant’s own cost and expense. Landlord shall equitably adjust Tenant’s Building Percentage of Operating Expenses with respect to the cost of electrical service to reflect that Tenant is paying the cost of electrical service to the lab
area outside of Operating Expenses. 

  
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 ARTICLE 10. 

FORCE MAJEURE 
 10.1 It is
understood and agreed that with respect to any service or other obligation to be furnished or obligations to be performed by either party, in no event shall either party be liable for failure to furnish or perform the same when prevented from doing
so by strike, lockout, breakdown, accident, supply, or inability by the exercise of reasonable diligence to obtain supplies, parts, or employees necessary to furnish such service or meet such obligation; or because of war or other emergency; or for
any cause beyond the reasonable control with the party obligated for such performance; or for any cause due to any act or omission of the other party or its agents, employees, licensees, invitees, or any persons claiming by, through, or under the
other party; or because of the failure of any public utility to furnish services; or because of order or regulation of any federal, state, county or municipal authority (collectively, “Force Majeure Events”). Nothing in this
Section 10.1 shall limit or otherwise modify or waive Tenant’s obligation to pay Base Rent and Additional Rent as and when due pursuant to the terms of this Lease. 

ARTICLE 11. 
 CONSTRUCTION,
MECHANICS’ AND MATERIALMAN’S LIENS 
 11.1 Tenant shall not suffer or permit any construction, mechanics’ or
materialman’s lien to be filed against the Premises or any portion of the Project by reason of work, labor services, or materials supplied or claimed to have been supplied to Tenant. Nothing herein contained shall be deemed or construed in any
way as constituting the consent or request of Landlord, expressed or implied, by inference or otherwise, for any contractor, subcontractor, laborer, or materialman to perform any labor or to furnish any materials or to make any specific improvement,
alteration, or repair of or to the Premises or any portion of the Project; nor of giving Tenant any right, power, or authority to contract for, or permit the rendering of, any services or the furnishing of any materials that could give rise to the
filing of any construction, mechanics’ or materialman’s lien against the Premises or any portion of the Project. 
 11.2 If any
such construction, mechanics’ or materialman’s lien shall at any time be filed against the Premises or any portion of the Project as the result of any act or omission of Tenant, Tenant covenants that it shall, within twenty (20) days
after Tenant has actual notice of the claim for lien, procure the discharge thereof by payment or by giving security or in such other manner as is or may be required or permitted by law or which shall otherwise satisfy Landlord. If Tenant fails to
take such action, Landlord, in addition to any other right or remedy it may have, may take such action as may be reasonably necessary to protect its interests. Any amounts paid by Landlord in connection with such action, all other expenses of
Landlord incurred in connection therewith, including reasonable attorneys’ fees, court costs, and other necessary disbursements shall be repaid by Tenant to Landlord within ten (10) days after demand. 

  
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 ARTICLE 12. 

ARBITRATION 
 12.1 In the event
that a dispute arises under Section 5.3 above, and the parties fail to resolve such dispute using good faith efforts within twenty (20) days, the same shall be submitted to expedited arbitration in accordance with
the provisions of applicable state law, if any, as from time to time amended. Arbitration proceedings, including the selection of an arbitrator, shall be conducted pursuant to the rules, regulations, and procedures for expedited arbitration from
time to time in effect as promulgated by the American Arbitration Association (the “Association”). Prior written notice of application by either party for arbitration shall be given to the other at least ten (10) days before
submission of the application to the said Association’s office in the city wherein the Building is situated (or the nearest other city having an Association office). The arbitrator shall hear the parties and their evidence. The decision of the
arbitrator may be entered in the appropriate court of law; and the parties consent to the jurisdiction of such court and further agree that any process or notice of motion or other application to the court or a judge thereof may be served outside
the state wherein the Building is situated by registered mail or by personal service, provided a reasonable time for appearance is allowed. The costs and expenses of each arbitration hereunder and their apportionment between the parties shall be
determined by the arbitrator in his or her award or decision, subject to the penultimate sentence of this section. No arbitrable dispute shall be deemed to have arisen under this Lease (a) prior to the expiration of the period of twenty
(20) days after the date of the giving of written notice by the party asserting the existence of the dispute, together with a description thereof sufficient for an understanding thereof, and (b) where Tenant disputes the amount of a Tenant
payment required hereunder (e.g., Operating Expense excess under Section 5.3 hereof), prior to Tenant paying in full the amount billed by Landlord, including the disputed amount. The prevailing party in such arbitration
shall be reimbursed for its expenses, including reasonable attorneys’ fees. Notwithstanding the foregoing, in no event shall this Article 12 affect or delay Landlord’s unlawful detainer rights under California
law. 
 ARTICLE 13. 
 INSURANCE

 13.1 Landlord shall maintain, as a part of Operating Expenses, special causes of loss form property insurance on the Project (excluding,
at Landlord’s option, the property required to be insured by Tenant pursuant to Section 13.2(e), below) in an amount equal to the full replacement cost of the Project, subject to such deductibles as Landlord may
determine. Landlord shall not be obligated to insure, and shall not assume any liability of risk of loss for, any of Tenant’s furniture, equipment, machinery, goods, supplies, improvements or alterations upon the Premises. Such insurance shall
be maintained with an insurance company selected, and in amounts desired, by Landlord or Landlord’s mortgagee, and payment for losses thereunder shall be made solely to Landlord subject to the rights of the holder of any mortgage or deed of
trust which may now or hereafter encumber the Project. Additionally Landlord may maintain such additional insurance, including, without limitation, earthquake insurance, flood insurance, liability insurance and/or rent insurance, as Landlord may in
its sole discretion elect. To the extent permitted pursuant to Article 5 above, the cost of all such additional insurance shall also be part of the Operating Expenses. Any or all of Landlord’s insurance may be provided by blanket
coverage maintained by Landlord or any affiliate of Landlord under its insurance 

  
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program for its portfolio of properties or by Landlord or any affiliate of Landlord’s program of self-insurance, and in such event Operating Expenses shall include the portion of the
reasonable cost of blanket insurance or self-insurance payments in lieu of premiums made by Landlord that is allocated to the Project. 

13.2 Tenant, at its own expense, shall maintain with insurers authorized to do business in the State of California and which are rated A- or better and have a financial size category of at least VII in the most recent Best’s Key Rating Guide, or any successor thereto (or if there is none, an organization having a national reputation),
(a) commercial general liability insurance, including Broad Form Property Damage and Contractual Liability with the following minimum limits: General Aggregate $3,000,000.00; Products/Completed Operations Aggregate $2,000,000.00; Each
Occurrence $2,000,000.00; Personal and Advertising Injury $1,000,000.00; Medical Payments $5,000.00 per person, (b) Umbrella/Excess Liability on a following form basis with the following minimum limits: General Aggregate $5,000,000.00; Each
Occurrence $5,000,000.00; (c) Workers’ Compensation with statutory limits; (d) Employer’s Liability insurance with the following limits: Bodily injury by disease per person $1,000,000.00; Bodily injury by accident policy limit
$1,000,000.00; Bodily injury by disease policy limit $1,000,000.00; (e) property insurance on special causes of loss insurance form covering (i) all office furniture, business and trade fixtures, office equipment, free-standing cabinet
work, movable partitions, merchandise and all other items of Tenant’s property on the Premises installed by, for, or at the expense of Tenant, (ii) ) the “Tenant Improvements,” as that term is defined in Section 2.1 of the
Tenant Work Letter, and any other improvements which exist in the Premises as of the Commencement Date (excluding the Base Building) (the “Original Improvements”), and (iii) all other improvements, alterations and additions to the
Premises (such insurance shall be for the full replacement cost value (subject to reasonable deductible amounts) new without deduction for depreciation of the covered items and in amounts that meet any
co-insurance clauses of the policies of insurance and shall include coverage for damage or other loss caused by fire or other peril including, but not limited to, vandalism and malicious mischief, theft, water
damage of any type, including sprinkler leakage, bursting or stoppage of pipes, and explosion); and (f) business auto liability insurance having a combined single limit of not less than One Million Dollars ($1,000,000.00) per occurrence and
insuring Tenant against liability for claims arising out of ownership, maintenance or use of any owned, hired or non-owned automobiles. At all times during the Term, such insurance shall be maintained, and
Tenant shall cause a current and valid certificate of such policies to be deposited with Landlord. If Tenant fails to have a current and valid certificate of such policies on deposit with Landlord at all times during the Term and such failure is not
cured within three (3) business days following Tenant’s receipt of notice thereof from Landlord, Landlord shall have the right, but not the obligation, to obtain such an insurance policy, and Tenant shall be obligated to pay Landlord the
amount of the premiums applicable to such insurance within ten (10) days after Tenant’s receipt of Landlord’s request for payment thereof. Said policy of liability insurance shall name Landlord, Landlord’s affiliates and
subsidiaries designated by Landlord, and Landlord’s managing agent as additional insureds and Tenant as the insured and shall be noncancellable with respect to Landlord except after thirty (30) days’ written notice from Tenant to
Landlord. 
 13.3 Tenant shall adjust annually the amount of coverage established in Section 13.2 hereof to such
amount as in Landlord’s reasonable opinion, adequately protects Landlord’s interest; provided the same is consistent with the amount of coverage customarily required of comparable tenants in Comparable Buildings. 

  
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 13.4 Notwithstanding anything in this Lease to the contrary, Landlord and Tenant each hereby
waives and releases any and all rights of recovery, claim, action, or cause of action against the other, its agents, employees, licensees, or invitees for any loss or damage to or at the Premises or the Project or any personal property of such party
therein or thereon by reason of fire, the elements, or any other cause which would be insured against under the terms of special causes of loss form property insurance, regardless of cause or origin, including omission of the other party hereto, its
agents, employees, licensees, or invitees. Landlord and Tenant covenant that no insurer shall hold any right of subrogation against either of such parties with respect thereto. This waiver shall be ineffective against any insurer of Landlord or
Tenant to the extent that such waiver is prohibited by the laws and insurance regulations of the State of California The parties hereto agree that any and all such insurance policies required to be carried by either shall be endorsed with a
subrogation clause, substantially as follows: “This insurance shall not be invalidated should the insured waive, in writing prior to a loss, any and all right of recovery against any party for loss occurring to the property described therein,
“ and shall provide that such party’s insurer waives any right of recovery against the other party in connection with any such loss or damage. All of Landlord’s and Tenant’s repair and indemnity obligations under this Lease shall
be subject to the waiver contained in this paragraph. 
 13.5 In the event Tenant’s occupancy or conduct of business in or on the
Premises, other than for the Permitted Use, results in any increase in premiums for the insurance carried from time to time by Landlord with respect to the Building, Tenant shall pay any such increase in premiums as Rent within ten (10) days
after bills for such additional premiums shall be rendered by Landlord. In determining whether increased premiums are a result of Tenant’s use or occupancy of the Premises, a schedule issued by the organization computing the insurance rate on
the Building showing the various components of such rate, shall be conclusive evidence of the several items and charges which make up such rate. Tenant shall promptly comply with all reasonable requirements of the insurance authority or of any
insurer now or hereafter in effect relating to the Premises. 
 ARTICLE 14. 

QUIET ENJOYMENT 
 14.1 Provided
Tenant is not in default under this Lease after the expiration of any period for cure in the performance of all its obligations under this Lease, including, but not limited to, the payment of Rent and all other sums due hereunder, Tenant shall
peaceably and quietly hold and enjoy the Premises for the Term, without hindrance by Landlord, subject to the provisions and conditions set forth in this Lease. 

ARTICLE 15. 
 ALTERATIONS 

15.1 Tenant agrees that it shall not make or allow to be made any alterations, physical additions, or improvements in or to the Premises
without first obtaining the written consent of Landlord in each instance. As used herein, the term “Minor Alteration” refers to an 

  
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alteration that (a) does not affect the outside appearance of the Building and is not visible from the Common Areas, (b) is non-structural and
does not impair the strength or structural integrity of the Building, and (c) does not materially or adversely affect the mechanical, electrical, HVAC or other systems of the Building. Landlord agrees not to unreasonably withhold its consent to
any Minor Alteration. Landlord’s consent to any other alteration may be conditioned, given, or withheld in Landlord’s reasonable discretion. Notwithstanding the foregoing, Landlord consents to any repainting, recarpeting, or other purely
cosmetic changes or upgrades to the Premises, so long as (i) the aggregate cost of such work is less than $25,000.00 in any twelve-month period, (ii) such work constitutes a Minor Alteration (iii) no building permit is required in
connection therewith, and (iv) such work conforms to the then existing Building standards. At the time of said request, Tenant shall submit to Landlord plans and specifications of the proposed alterations, additions, or improvements; and
Landlord shall have a period of not less than fifteen (15) days therefrom in which to review and approve or disapprove said plans; provided that if Landlord determines in good faith that Landlord requires a third party to assist in reviewing
such plans and specifications, Landlord shall instead have a period of not less than thirty (30) days in which to review and approve or disapprove said plans. Tenant shall pay to Landlord upon demand the cost and expense of Landlord in
(A) reviewing said plans and specifications, and (B) inspecting the alterations, additions, or improvements to determine whether the same are being performed in accordance with the approved plans and specifications and all laws and
requirements of public authorities, including, without limitation, the fees of any architect or engineer employed by Landlord for such purpose. In any instance where Landlord grants such consent, and permits Tenant to use its own contractors,
laborers, materialmen, and others furnishing labor or materials for Tenant’s construction (collectively, “Tenant’s Contractors”), Landlord’s consent shall be deemed conditioned upon each of Tenant’s Contractors
(1) working in harmony and not interfering with any laborer utilized by Landlord, Landlord’s contractors, laborers, or materialmen; and (2) furnishing Landlord with evidence of acceptable liability insurance, worker’s
compensation coverage, and if at any time such entry by one or more persons furnishing labor or materials for Tenant’s work shall cause such disharmony or interference, the consent granted by Landlord to Tenant may be withdrawn immediately upon
written notice from Landlord to Tenant. If Tenant is using Tenant’s Contractors for Tenant’s construction, the contract with such Tenant’s Contractor(s) shall provide for a guaranteed maximum price or a stipulated sum as the contract
amount and shall be fully executed and delivered by Tenant and Tenant’s Contractor(s) prior to the commencement of construction. Tenant, at its expense, shall obtain all necessary governmental permits and certificates for the commencement and
prosecution of alterations, additions, or improvements and for final approval thereof upon completion, and shall cause any alterations, additions, or improvements to be performed in compliance therewith and with all Applicable Laws (including
without limitation, California Energy Code, Title 24) and all requirements of public authorities and with all applicable requirements of insurance bodies. All alterations, additions, or improvements shall be diligently performed in a good and
workmanlike manner, using new materials and equipment at least equal in quality and class to be better than (a) the original installations of the Building, or (b) the then standards for the Comparable Building. Upon the completion of work
and upon request by Landlord, Tenant shall provide Landlord copies of all waivers or releases of lien from each of Tenant’s Contractors. No alterations, modifications, or additions to the Project or the Premises shall be removed by Tenant
either during the Term or upon the Expiration Date or the Termination Date without the express written approval of Landlord. Tenant shall not be entitled to any reimbursement or compensation resulting from its payment of the cost of constructing all
or any portion of said improvements or modifications thereto unless otherwise expressly agreed by Landlord in writing. 

  
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 15.2 Landlord’s approval of Tenant’s plans for work shall create no responsibility or
liability on the part of Landlord for their completeness, design sufficiency, or compliance with all laws, rules, and regulations of governmental agencies or authorities, including, but not limited to, the Americans with Disabilities Act. Landlord
may, at its option, at Tenant’s expense, require that Landlord’s contractors be engaged for any work upon the integrated Building mechanical or electrical systems or other Building or leasehold improvements. 

15.3 At least five (5) days prior to the commencement of any work permitted to be done by persons requested by Tenant on the Premises,
Tenant shall notify Landlord of the proposed work and the names and addresses of Tenant’s Contractors. During any such work on the Premises, Landlord, or its representatives, shall have the right to go upon and inspect the Premises at all
reasonable times, and shall have the right to post and keep posted thereon building permits and notices of non-responsibility or to take any further action which Landlord may deem to be proper for the
protection of Landlord’s interest in the Premises. 
 15.4 During such times as Tenant is performing work or having work or services
performed in or to the Premises, Tenant shall require its contractors, and their subcontractors of all tiers, to obtain and maintain commercial general liability, automobile, workers compensation, employer’s liability, builder’s risk, and
equipment/property insurance in such amounts and on such terms as are customarily required of such contractors and subcontractors on similar projects. The amounts and terms of all such insurance are subject to Landlord’s written approval, which
approval shall not be unreasonably withheld. The commercial general liability and auto insurance carried by Tenant’s contractors and their subcontractors of all tiers pursuant to this section shall name Landlord, Landlord’s managing agent,
and such other persons as Landlord may reasonably request from time to time as additional insureds with respect to liability arising out of or related to their work or services (collectively, “Additional Insureds”). Such insurance shall
provide primary coverage without contribution from any other insurance carried by or for the benefit of Landlord, Landlord’s managing agent, or other Additional Insureds. Such insurance shall also waive any right of subrogation against each
Additional Insured. Tenant shall obtain and submit to Landlord, prior to the earlier of (i) the entry onto the Premises by such contractors or subcontractors or (ii) commencement of the work or services, certificates of insurance
evidencing compliance with the requirements of this section. All of such alterations shall be insured by Tenant pursuant to Article 13 of this Lease immediately upon completion thereof. 

15.5 Tenant’s initial improvement of the Premises shall be governed by Exhibit C and not the provisions of this
Article 15 (other than Section 15.4). 

  
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 ARTICLE 16. 

FURNITURE, FIXTURES, AND PERSONAL PROPERTY 

16.1 Tenant, at its sole cost and expense, may remove its trade fixtures, office supplies and moveable office furniture and equipment not
attached to the Project or Premises and all Permitted Equipment provided: 
 (a) Such removal is made prior to the Expiration Date or the
Termination Date; and 
 (b) Tenant promptly repairs all damage caused by such removal. 

16.2 If Tenant does not remove its trade fixtures, office supplies, and moveable furniture and equipment as herein above provided prior to the
Expiration Date or the Termination Date (unless prior arrangements have been made with Landlord and Landlord has agreed in writing to permit Tenant to leave such items in the Premises for an agreed period), then, in addition to its other remedies,
at law or in equity, Landlord shall have the right to have such items removed and stored at Tenant’s sole cost and expense and all damage to the Project or the Premises resulting from said removal shall be repaired at the cost of Tenant;
Landlord may elect that such items automatically become the property of Landlord upon the Expiration Date or the Termination Date, and Tenant shall not have any further rights with respect thereto or reimbursement therefor subject to the provisions
of Applicable Law. All other property in the Premises, any alterations, or additions to the Premises (including wall-to-wall carpeting, paneling, wall covering,
specially constructed or built-in cabinetry or bookcases), and any other article attached or affixed to the floor, wall, or ceiling of the Premises shall become the property of Landlord and shall remain upon
and be surrendered with the Premises as a part thereof at the Expiration or Termination Date regardless of who paid therefor; and Tenant hereby waives all rights to any payment or compensation therefor. Subject to the last sentence of this
Section 16.2, if, however, Landlord so requests, in writing, Tenant shall remove, prior to the Expiration Date or the Termination Date, any and all alterations, additions, fixtures, equipment, and property placed or installed in the Premises by
Tenant and shall repair any damage caused by such removal. In addition, if any alterations performed by Tenant do not use materials that conform to the building standards used by Landlord at the time of the particular alteration, then upon
Landlord’s request at the time it consents to such alteration, Tenant shall at Tenant’s sole cost and expense, no later than the expiration of the Term (or no later than fifteen (15) days after the earlier termination of the Term)
cause the improvements in the Premises to be restored at Tenant’s sole cost and expense. Prior to commencing any alteration, Tenant may request that Landlord notify Tenant whether or not the proposed alteration will be required by Landlord to
be removed at the end of the Term. 
 16.3 All the furnishings, fixtures, equipment, effects, and property of every kind, nature, and
description of Tenant and of all persons claiming by, through, or under Tenant which, during the continuance of this Lease or any occupancy of the Premises by Tenant or anyone claiming under Tenant, may be on the Premises or elsewhere in the Project
shall be at the sole risk and hazard of Tenant, and if the whole or any part thereof shall be destroyed or damaged by fire, water, or otherwise, or by the leakage or bursting of water pipes, steam pipes, or other pipes, by theft, or from any other
cause, no part of said loss or damage is to be charged to or be borne by Landlord unless due to the gross negligence or willful misconduct of Landlord or its employees, agents or contractors. 

  
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 ARTICLE 17. 

PERSONAL PROPERTY AND OTHER TAXES 

17.1 During the Term hereof, Tenant shall pay, prior to delinquency, all business and other taxes, charges, notes, duties, and assessments
levied, and rates or fees imposed, charged, or assessed against or in respect of Tenant’s occupancy of the Premises or in respect of the personal property, trade fixtures, furnishings, equipment, and all other personal and other property of
Tenant contained in the Project (including without limitation taxes and assessments attributable to the cost or value of any leasehold improvements made in or to the Premises by or for Tenant (to the extent that the assessed value of those leasehold
improvements exceeds the assessed value of standard office improvements in other space in the Project regardless of whether title to those improvements is vested in Tenant or Landlord)), and shall hold Landlord harmless from and against all payment
of such taxes, charges, notes, duties, assessments, rates, and fees, and against all loss, costs, charges, notes, duties, assessments, rates, and fees, and any and all such taxes. Tenant shall cause said fixtures, furnishings, equipment, and other
personal property to be assessed and billed separately from the real and personal property of Landlord. In the event any or all of Tenant’s fixtures, furnishings, equipment, and other personal property shall be assessed and taxed with
Landlord’s real property, Tenant shall pay to Landlord Tenant’s share of such taxes within ten (10) days after delivery to Tenant by Landlord of a statement in writing setting forth the amount of such taxes applicable to Tenant’s
property. In addition, Tenant shall be liable for and shall pay before delinquency any (i) rent tax, gross receipts tax, or sales tax, service tax, transfer tax or value added tax, or any other applicable tax on the rent or services herein or
otherwise respecting this Lease; or (ii) taxes assessed upon or with respect to the possession, leasing, operation, management, maintenance, alteration, repair, use or occupancy by Tenant of the Premises or any portion of the Project. If any of
such taxes are billed to Landlord or included in bills to Landlord for taxes, then Tenant shall pay to Landlord all such amounts within fifteen (15) days after receipt of Landlord’s invoice therefor. If applicable law prohibits Tenant from
reimbursing Landlord for any such taxes, but Landlord may lawfully increase the Base Rent to account for Landlord’s payment of such taxes, the Base Rent payable to Landlord shall be increased to net to Landlord the same return without
reimbursement of such Imposition as would have been received by Landlord with reimbursement of such taxes. 
 ARTICLE 18. 

ASSIGNMENT AND SUBLETTING 
 18.1
Tenant shall not, without the prior written consent of Landlord, which consent shall not be unreasonably withheld (except that Landlord shall in no event be obligated to consent to an encumbrance of this Lease): (a) assign, convey, mortgage or
otherwise transfer this Lease or any interest hereunder, or sublease the Premises, or any part thereof, whether voluntarily or by operation of law; or (b) permit the use of the Premises or any part thereof by any person other than Tenant and
its employees. Any such transfer, sublease or use described in the preceding sentence (a “Transfer”) occurring without the prior written consent of Landlord shall, at Landlord’s option, be void and of no effect. Landlord’s
consent to any Transfer shall not 

  
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constitute a waiver of Landlord’s right to withhold its consent to any future Transfer. Landlord may require as a condition to its consent to any assignment of this Lease that the assignee
execute an instrument in which such assignee assumes the remaining obligations of Tenant hereunder; provided that the acceptance of any assignment of this Lease by the applicable assignee shall automatically constitute the assumption by such
assignee of all of the remaining obligations of Tenant that accrue following such assignment. The voluntary or other surrender of this Lease by Tenant or a mutual cancellation hereof shall not work a merger and shall, at the option of Landlord,
terminate all or any existing sublease or may, at the option of Landlord, operate as an assignment to Landlord of Tenant’s interest in any or all such subleases. 

18.2 For purposes of this Lease, the term “Transfer” shall also include (i) if a Tenant is a partnership or limited liability
company, the withdrawal or change, voluntary, involuntary or by operation of law, of fifty percent (50%) or more of the partners, members or managers thereof, or transfer of twenty-five percent (25%) or more of partnership or membership interests
therein within a twelve (12) month period, or the dissolution of the partnership or the limited liability company without immediate reconstitution thereof, and (ii) if Tenant is a corporation whose stock is not publicly held and not traded
through an exchange or over the counter or any other form of entity, the dissolution, merger, consolidation or other reorganization of Tenant, the sale or other transfer of more than an aggregate of fifty percent (50%) of the voting shares or other
interests of or in Tenant (other than to immediate family members by reason of gift or death or as part of a public offering or equity financing), within a twelve (12) month period. 

18.3 If Tenant desires the consent of Landlord to a Transfer, Tenant shall submit to Landlord, at least thirty (30) days prior to the
proposed effective date of the Transfer, a written notice (the “Transfer Notice”) which includes (a) the name of the proposed sublessee or assignee, (b) the nature of the proposed sublessee’s or assignee’s business,
(c) the terms and provisions of the proposed sublease or assignment, and (d) current financial statements and information on the proposed sublessee or assignee. Upon receipt of the Transfer Notice, Landlord may reasonably request
additional information concerning the Transfer or the proposed sublessee or assignee (the “Additional Information”). Subject to Landlord’s rights under Section 18.6, Landlord shall not unreasonably withhold its consent to any
assignment or sublease (excluding an encumbrance), which consent or lack thereof shall be provided within thirty (30) days of receipt of Tenant’s Transfer Notice; provided, however, Tenant hereby agrees that it shall be a reasonable basis
for Landlord to withhold its consent if Landlord has not received the Additional Information requested by Landlord. Without limiting any other reasonable basis for Landlord to withhold its consent to the proposed Transfer, Landlord and Tenant agree
that for purposes of this Lease and any Applicable Law, Landlord shall not be deemed to have unreasonably withheld its consent if, in the judgment of Landlord: (i) the transferee is of a character or engaged in a business which is not in
keeping with the standards or criteria used by Landlord in leasing the Project, or the general character or quality of the Project; (ii) the financial condition of the transferee is such that it may not be able to perform its obligations in
connection with this Lease or the sublease, as applicable (or otherwise does not satisfy Landlord’s standards for financial standing with respect to tenants under direct leases of comparable economic scope); (iii) the transferee is
negotiating for space in the Project or has negotiated with Landlord within the preceding sixty (60) days (or is currently negotiating with Landlord) to lease space in the Project, provided, that this subpart (iii) shall only apply if
Landlord has adequate space in the 

  
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Project to accommodate such transferee’s needs, (iv) the transferee has the power of eminent domain, is a governmental agency or an agency or subdivision of a foreign government;
(v) an Event of Default by Tenant has occurred and is uncured at the time Tenant delivers the Transfer Notice to Landlord; (vi) in the judgment of Landlord, such a Transfer would violate any term, condition, covenant, or agreement of
Landlord involving the Project or any other tenant’s lease within it or would give an occupant of the Project a right to cancel or modify its lease; (vii) [intentionally omitted]; (viii) in Landlord’s judgment, the use of the
Premises by the proposed transferee would not be comparable to the types of use by other tenants in the Project would result in more than a reasonable density of occupants per square foot of the Premises, would increase the burden on elevators or
other Building systems or equipment over the burden thereon prior to the proposed Transfer, would require increased services by Landlord or would require any alterations to the Project to comply with applicable laws; (ix) thetransferee intends
to use the space for purposes which are not permitted under this Lease; (x) the terms of the proposed Transfer would allow the transferee to exercise a right of renewal, right of expansion, right of first offer, or other similar right held by
Tenant (or will allow the transferee to occupy space leased by Tenant pursuant to any such right); (xi) the proposed Transfer would result in more than three subleases per each full floor of the Premises being in effect at any one time during the
Term; or (xii) any ground lessor or mortgagee whose consent to such Transfer is required fails to consent thereto. Tenant hereby waives any right to terminate the Lease as remedies for Landlord wrongfully withholding its consent to any Transfer
and agrees that Tenant’s sole and exclusive remedy therefor shall be to seek specific performance of Landlord’s obligation to consent to such Transfer or damages. 

18.4 Landlord and Tenant agree that, in the event of any approved assignment or subletting, the rights of any such assignee or sublessee of
Tenant herein shall be subject to all of the terms, conditions, and provisions of this Lease, including, without limitation, restriction on use, assignment, and subletting and the covenant to pay Rent. Following any Event of Default by Tenant,
Landlord may collect the rent owing by the assignee or sublessee directly from such assignee or sublessee and apply the amount so collected to the Rent herein reserved. No such consent to or recognition of any such assignment or subletting shall
constitute a release of Tenant or any guarantor of Tenant’s performance hereunder from further performance by Tenant or such guarantor of covenants undertaken to be performed by Tenant herein. Tenant and any such guarantor shall remain liable
and responsible for all Rent and other obligations herein imposed upon Tenant, and Landlord may condition its consent to any Transfer upon the receipt of a written reaffirmation from each such guarantor in a form acceptable to Landlord (which shall
not be construed to imply that the occurrence of a Transfer without such a reaffirmation would operate to release any guarantor). Consent by Landlord to a particular assignment, sublease, or other transaction shall not be deemed a consent to any
other or subsequent transaction. In any case where Tenant desires to assign, sublease or enter into any related or similar transaction, whether or not Landlord consents to such assignment, sublease, or other transaction, Tenant shall pay any
reasonable attorneys’ fees incurred by Landlord in connection with such assignment, sublease or other transaction, including, without limitation, fees incurred in reviewing documents relating to, or evidencing, said assignment, sublease, or
other transaction; provided that those costs shall not exceed $2,500.00 with respect to any single Transfer so long as Tenant and the proposed transferee execute Landlord’s standard form of consent document without material negotiation. All
documents utilized by Tenant to evidence any subletting or assignment for which Landlord’s consent has been requested and is required hereunder, shall be subject to prior approval (not to be unreasonably withheld, conditioned or delayed) by
Landlord or its attorney. 

  
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 18.5 Tenant shall be bound and obligated to pay Landlord a portion of any sums or economic
consideration payable to Tenant by any sublessee, assignee, licensee, or other transferee, within ten (10) days following receipt thereof by Tenant from such sublessee, assignee, licensee, or other transferee, as the case might be, as follows:

 (a) In the case of an assignment, fifty percent (50%) of any sums or other economic consideration received by Tenant as a
result of such assignment shall be paid to Landlord after first deducting the unamortized cost of reasonable leasehold improvements paid for by Tenant in connection with such assignment and reasonable cost of any real estate commissions and any
attorneys’ fees incurred by Tenant in connection with such assignment. 
 (b) In the case of a subletting, fifty percent
(50%) of any sums or economic consideration received by Tenant as a result of such subletting shall be paid to Landlord after first deducting (i) the Rent due hereunder prorated to reflect only Rent allocable to the sublet portion of the
Premises, (ii) the reasonable cost of tenant improvements made to the sublet portion of the Premises by Tenant at Tenant’s expense (without reimbursement out of any allowance provided by Landlord) for the specific benefit of the sublessee,
which shall be amortized over the term of the sublease, and (iii) the reasonable cost of any real estate commissions and attorneys’ fees incurred by Tenant in connection with such subletting, which shall be amortized over the term of the
sublease. 
 (c) Tenant shall provide Landlord with a detailed statement setting forth any sums or economic consideration
Tenant either has or will derive from such Transfer, the deductions permitted under (a) and (b) of this Section 18.5, and the calculation of the amounts due Landlord under this Section 18.5.
In addition, Landlord or its representative shall have the right at all reasonable times to audit the books and records of Tenant with respect to the calculation of the Transfer profits. If such inspection reveals that the amount paid to Landlord
was incorrect, then within ten (10) days of Tenant’s receipt of the results of such audit, Tenant shall pay Landlord the deficiency and the cost of Landlord’s audit. 

18.6 If this Lease is assigned to any person or entity pursuant to the provisions of the Bankruptcy Code, 11 U.S.C. Section 101
et seq. or any successor or substitute therefor (the “Bankruptcy Code”), any and all monies or other consideration payable or otherwise to be delivered in connection with such assignment shall be paid or delivered to Landlord, shall
be and remain the exclusive property of Landlord, and shall not constitute property of Tenant or of the estate of Tenant within the meaning of the Bankruptcy Code. Any such monies or other consideration not paid or delivered to Landlord shall be
held in trust for the benefit of Landlord and shall be promptly paid or delivered to Landlord. Any person or entity to whom this Lease is so assigned shall be deemed, without further act or deed, to have assumed all of the remaining obligations
arising under this Lease as of the date of such assignment. Any such assignee shall, upon demand therefor, execute and deliver to Landlord an instrument confirming such assumption. 

  
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 18.7 [Intentionally Omitted] 

18.8 Notwithstanding the foregoing, Tenant may undergo a deemed Transfer due to a transfer of its stock as described in Section 18.2(ii)
(in which case, Tenant shall be deemed the “Transferee” as described below) or Transfer all or part of its interest in this Lease or all or part of the Premises (a “Permitted Transfer”) to the following types of entities (a
“Permitted Transferee”) without the written consent of Landlord and without payment of any sums under Section 18.5: (a) any parent, subsidiary or affiliate corporation which Controls (as defined below), is
Controlled by or is under common Control with Tenant (collectively, an “Affiliate”); (b) any corporation, limited partnership, limited liability partnership, limited liability company or other business entity in which or with which
Tenant, an Affiliate of Tenant, or their respective corporate successors or assigns, is merged or consolidated, in accordance with applicable statutory provisions governing merger and consolidation of business entities, so long as in both cases
(a) and (b), (i) Tenant’s obligations hereunder are assumed by the Permitted Transferee; and (ii) the Permitted Transferee satisfies the Net Worth Threshold as of the effective date of the Permitted Transfer; or (c) any
corporation, limited partnership, limited liability partnership, limited liability company or other business entity which acquires all or substantially all of Tenant’s assets and/or ownership interests, if the Transferee satisfies the Net Worth
Threshold as of the effective date of the Transfer. Tenant shall notify Landlord in writing of any such Permitted Transfer. Tenant shall remain liable for the performance of all of the obligations of Tenant hereunder, or if Tenant no longer exists
because of a merger, consolidation, or acquisition, the surviving or acquiring entity shall expressly assume in writing, the obligations of Tenant hereunder. Additionally, the Permitted Transferee shall comply with all of the terms and conditions of
this Lease, whether accruing prior to and/or from and after the consummation of the Transfer. No later than ten (10) days prior to the effective date of any Permitted Transfer, Tenant agrees to furnish Landlord with (1) copies of the
instrument effecting any of the foregoing Transfers, (2) documentation establishing Tenant’s satisfaction of the requirements set forth above applicable to any such Transfer, and (3) evidence of insurance as required under this Lease
with respect to the Permitted Transferee. The occurrence of a Permitted Transfer shall not waive Landlord’s rights as to any subsequent Transfers. As used herein, the term “Net Worth Threshold” shall mean the proposed Permitted
Transferee has a tangible net worth equal to or greater than that of Tenant immediately prior to such transaction (determined in accordance with generally accepted accounting principles consistently applied and excluding from the determination of
total assets all assets which would be classified as intangible assets under generally accepted accounting principles, including, without limitation, goodwill, licenses, trademarks, trade names, copyrights and franchises), and as evidenced by
financial statements audited by a certified public accounting firm reasonably acceptable to Landlord. The term “Control” shall mean the possession of the power to direct or cause the direction of the management and policy of such
corporation, partnership, limited liability company or other entity, whether through the ownership of voting securities, by statute or by contract, and whether directly or indirectly through Affiliates. 

  
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 ARTICLE 19. 

DAMAGE OR DESTRUCTION 
 19.1 If
the Premises or Building should be damaged or destroyed by fire or other casualty, Tenant shall give immediate written notice to Landlord. If the Premises or any common areas of the Building or Project serving or providing access to the Premises
shall be damaged by fire or other casualty, Landlord shall promptly and diligently, subject to reasonable delays for insurance adjustment or other matters beyond Landlord’s reasonable control, and subject to all other terms of this
Article 19, restore the base, shell, and core of the Premises and such common areas. Such restoration shall be to substantially the same condition of the base, shell, and core of the Premises and common areas prior to the
casualty, except for modifications required by zoning and building codes and other laws or by the holder of a mortgage on the Project, or the lessor of a ground or underlying lease with respect to the Project and/or the Building, or any other
modifications to the common areas deemed desirable by Landlord, provided access to the Premises and any common restrooms serving the Premises shall not be materially impaired. Landlord shall not be liable for any inconvenience or annoyance to Tenant
or its visitors, or injury to Tenant’s business resulting in any way from such damage or the repair thereof; provided however, that if such fire or other casualty shall have damaged the Premises or common areas necessary to Tenant’s
occupancy, Landlord shall allow Tenant a proportionate abatement of Base Rent and Tenant’s Share of Operating Expenses and Tenant’s Tax Share of Taxes, during the time and to the extent the Premises are unfit for occupancy for the purposes
permitted under this Lease, and not occupied by Tenant as a result thereof; provided, however, if the damage or destruction was caused by the negligence or willful misconduct of Tenant or Tenant’s employees, contractors, licensees, subtenants
or invitees, such abatement shall occur only to the extent rental abatement insurance proceeds are received by Landlord (or would have been received by Landlord if Landlord had carried rental abatement insurance with a coverage period of twelve
months). 
 19.2 Within sixty (60) days following the date of discovery of the damage, Landlord shall deliver to Tenant a written
estimate from Landlord’s contractor of the time needed to rebuild and/or restore the Premises and/or the Building (the “Restoration Notice”). Notwithstanding the terms of Section 19.1 of this Lease, Landlord
may elect not to rebuild and/or restore the Premises, the Building and/or any other portion of the Project and instead terminate this Lease by notifying Tenant in writing of such termination within sixty (60) days after the date of
Landlord’s discovery of such damage (the “Damage Discovery Date”), such notice to include a termination date giving Tenant ninety (90) days to vacate the Premises, but Landlord may so elect only if the Building shall be damaged
by fire or other casualty or cause, whether or not the Premises are affected, and one or more of the following conditions is present: (i) repairs cannot reasonably be completed within one hundred eighty (180) days of the Damage Discovery
Date (when such repairs are made without the payment of overtime or other premiums); (ii) the holder of any mortgage on the Project or ground or underlying lessor with respect to the Project and/or the Building shall require that the insurance
proceeds or any portion thereof be used to retire the mortgage debt, or shall terminate the ground or underlying lease, as the case may be; or (iii) the damage is not fully covered (except for deductible amounts in the case of a casualty other
than earthquake or flood) by Landlord’s insurance policies; provided, however, that Landlord shall not have the right to terminate this Lease if the damage to the Building is relatively minor (e.g., repair or restoration would cost less than
five percent (5%) of 

  
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the replacement cost of the Building) or Landlord actually intends to restore the damage in the following one hundred eighty (180) day period. In addition, if the Premises or the Building is
destroyed or damaged to any substantial extent during the last twelve (12) months of the Term, then notwithstanding anything contained in this Article 19, Landlord shall have the option to terminate this Lease by
giving written notice to Tenant of the exercise of such option within thirty (30) days after the Damage Discovery Date, in which event this Lease shall cease and terminate as of the date of such notice. Upon any such termination of this Lease
pursuant to this Section 19.2, Tenant shall pay the Base Rent and Additional Rent, properly apportioned up to such date of termination, and both parties hereto shall thereafter be freed and discharged of all further
obligations hereunder, except as provided for in provisions of this Lease which by their terms survive the expiration or earlier termination of the Term. 

19.3 If there is an occurrence of any damage to the Premises that does not result in the termination of this Lease pursuant to this
Article 19, then upon notice (the “Landlord Repair Notice”) to Tenant from Landlord, Tenant shall assign to Landlord (or to any party designated by Landlord) all insurance proceeds payable to Tenant under
Tenant’s insurance required under Sections 13.2(e)(ii) and (iii) above with respect to any improvements in the Premises required to be insured by Tenant hereunder (excluding proceeds for Tenant’s
Property), and Landlord shall repair any injury or damage to the Tenant Improvements, alterations and the Original Improvements installed in the Premises and shall return such Tenant Improvements, alterations and Original Improvements to their
original condition; provided that if the cost of such repair by Landlord exceeds the sum of (A) amount of insurance proceeds received by Landlord from Tenant’s insurance carrier, as assigned by Tenant, plus (B) any insurance proceeds
received by Landlord with respect to such Tenant Improvements, alterations and Original Improvements (it being acknowledged and agreed that Tenant’s insurance as to the Tenant Improvements, Alterations and Original Improvements is primary in
nature and Landlord’s insurance, if any, with respect to same is secondary in nature), the cost of such repairs shall be paid by Tenant to Landlord prior to Landlord’s commencement of repair of the damage. Tenant may elect to make
reasonable value-engineering modifications to the plans for the restoration work to the extent necessary to minimize or eliminate any costs in excess of the insurance proceeds available for such restoration, except to the extent such shortfall of
insurance proceeds is due to Tenant’s failure to carry the insurance Tenant is obligated to carry under this Lease or to any deductible under such insurance policy Tenant carries or is obligated to carry under this Lease. In the event that
Landlord does not deliver the Landlord Repair Notice within forty-five (45) days following the Damage Discovery Date, Tenant shall, at its sole cost and expense, repair any injury or damage to the Tenant Improvements, alterations, and the
Original Improvements installed in the Premises and shall return such Tenant Improvements, alterations, and Original Improvements to their original condition. Whether or not Landlord delivers a Landlord Repair Notice, prior to the commencement of
construction, Tenant shall submit to Landlord, for Landlord’s review and approval, all plans, specifications and working drawings relating thereto, and Landlord shall select the contractors to perform such improvement work. 

19.4 If (i) Landlord does not elect to terminate this Lease pursuant to Landlord’s termination right as provided hereinabove,
(ii) the damage constitutes a Tenant Damage Event (as defined below, and either (a) the repairs cannot, in the reasonable opinion of Landlord’s contractor, be completed within two hundred ten (210) days after the date of the
casualty, or (b) the damage occurs during the last twelve (12) months of the Term and will 

  
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reasonably require in excess of ninety (90) days to repair, Tenant may elect, no earlier than sixty (60) days after the date of the damage and not later than ninety (90) days after
the date of such damage (or within thirty (30) days after receipt of the Restoration Notice, if later), to terminate this Lease by written notice to Landlord effective as of the date specified in the notice, which date shall not be less than
thirty (30) days nor more than sixty (60) days after the date such notice is given by Tenant (prior to which Tenant shall be entitled to an abatement of Rent as provided in Section 19.1). In the event of a Tenant Damage Event, and if
the Lease does not terminate pursuant to the other provisions of this Article 19, then if Landlord fails to substantially complete the repair of such damage comprising a Tenant Damage Event on or before the date (the “Outside Restoration
Completion Date”) which is one (1) month after the date estimated for completion of such repair by landlord’s contractor in the Restoration Notice, then Tenant shall have the option, exercisable by written notice to Landlord within
thirty (30) days after the Outside Restoration Completion Date, to terminate this Lease (“Tenant’s Second Termination Option”). The Outside Restoration Completion Date shall be extended by delays in the completion of the repair
of the damage comprising a Tenant Damage Event to the extent caused by Force Majeure Events (other than the casualty that caused the damage) for up to thirty (30) days or by Tenant, its agents, employees or contractors. If Tenant exercises
Tenant’s Second Termination Option, the Lease shall terminate as of a date specified in Tenant’s termination notice which is not less than thirty (30) days nor more than sixty (60) days after Tenant’s notice to Landlord of
the exercise of Tenant’s Second Termination Option. As used herein, a “Tenant Damage Event” shall mean damage to all or any part of the Premises or any Common Areas necessary to Tenant’s occupancy of the Premises by fire or other
casualty, which damage (A) is not the result of the willful misconduct of Tenant or any of Tenant’s agents, employees or contractors, and (B) substantially interferes with Tenant’s use of or access to the Premises. 

19.5 In the event this Lease is terminated in accordance with the terms of this Article 19, Tenant shall assign to
Landlord (or to any party designated by Landlord) all insurance proceeds payable to Tenant under Tenant’s insurance required under Sections 13.2(e)(ii) and (iii). 

19.6 The provisions of this Lease, including this Article 19, constitute an express agreement between Landlord and
Tenant with respect to damage to, or destruction of, all or any portion of the Premises or the Project, and any statute or regulation of the State of California, including without limitation Sections 1932(2) and 1933(4) of the California Civil
Code, with respect to any rights or obligations concerning damage or destruction in the absence of an express agreement between the parties (and any other statute or regulation now or hereafter in effect with respect to such rights or obligations),
shall have no application to this Lease or to any damage or destruction to all or any portion of the Premises or the Project. 
 ARTICLE 20.

 CONDEMNATION 
 20.1 If all of
the Premises is condemned by eminent domain, inversely condemned or sold under threat of condemnation for any public or quasi-public use or purpose (“Condemned”), this Lease shall terminate as of the earlier of the date the condemning
authority takes title to or possession of the Premises, and Rent shall be adjusted to the date of termination. 

  
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 20.2 If any portion of the Premises or Building is condemned and such partial condemnation
materially impairs Tenant’s ability to use the Premises for Tenant’s business as reasonably determined by Landlord, Landlord shall have the option in Landlord’s sole and absolute discretion of either (i) relocating Tenant at
Landlord’s cost to comparable space within the Project that is reasonably acceptable to Tenant or (ii) terminate this Lease as of the earlier of the date title vests in the condemning authority or as of the date an order of immediate
possession is issued and Rent shall be adjusted to the date of termination. If such partial condemnation does not materially impair Tenant’s ability to use the Premises for the business of Tenant, Landlord shall promptly restore the Premises to
the extent of any condemnation proceeds recovered by Landlord, excluding the portion thereof lost in such condemnation, and this Lease shall continue in full force and effect except that after the date of such title vesting or order of immediate
possession Rent shall be equitably adjusted as reasonably determined by Landlord. 
 20.3 If the Premises are wholly or partially condemned,
Landlord shall be entitled to the entire award paid for such condemnation, and Tenant waives any claim to any part of the award from Landlord or the condemning authority; provided, however, Tenant shall have the right to recover from the condemning
authority such compensation as may be separately awarded to Tenant in connection with costs in removing Tenant’s merchandise, furniture, fixtures, leasehold improvements and equipment to a new location and all Tenant’s relocation costs. No
condemnation of any kind shall be construed to constitute an actual or constructive eviction of Tenant or a breach of any express or implied covenant of quiet enjoyment. Tenant hereby waives the effect of Sections 1265.120 and 1265.130 of the
California Code of Civil Procedure. 
 20.4 In the event of a temporary condemnation lasting one hundred eighty (180) days or less not
extending beyond the Term, this Lease shall remain in effect, Tenant shall continue to pay Rent and Tenant shall receive any award made for such condemnation except damages to any of Landlord’s property. If a temporary condemnation is for more
than one hundred eighty (180) days or a period which extends beyond the Term, this Lease shall terminate as of the date of initial occupancy by the condemning authority and any such award shall be distributed in accordance with the preceding
section. 
 ARTICLE 21. 
 HOLD
HARMLESS 
 21.1 Tenant agrees to defend, with counsel approved by Landlord, all actions against Landlord, any member, partner, trustee,
stockholder, officer, director, employee, or beneficiary of Landlord (collectively, “Landlord Parties”), holders of mortgages secured by the Premises or the Project and any other party having an interest therein (collectively with Landlord
Parties, the “Indemnified Parties”) with respect to, and to pay, protect, indemnify, and save harmless, to the extent permitted by law, all Indemnified Parties from and against, any and all liabilities, losses, damages, costs, expenses
(including reasonable attorneys’ fees and expenses), causes of action, suits, claims, demands, or judgments of any nature to which any Indemnified Party is subject because of its estate or interest in the Premises or the Project arising from
(a) injury to or death of any person, or damage to or loss of property on the Premises, the Project, on adjoining sidewalks, streets or ways, that is in any of the foregoing cases, connected with the use, condition, or occupancy of the
Premises, except to the extent, if any, caused by the 

  
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negligence or willful misconduct of Landlord or its employees, contractors or agents or Landlord’s violation of this Lease, (b) any violation of this Lease by or attributable to Tenant,
or (c) subject to Section 13.4, any act, fault, omission, or other misconduct of Tenant or its agents, contractors, licensees, sublessees, or invitees. Tenant hereby releases the Indemnified Parties from any and all
such claims for any damage or injury to the fullest extent permitted by law. 
 21.2 Tenant agrees that Landlord shall not be responsible or
liable to Tenant, its agents, employees, or invitees for fatal or non-fatal bodily injury or property damage occasioned by the acts or omissions of any other tenant, or such other tenant’s agents,
employees, licensees, or invitees, of the Project. Landlord shall not be liable to Tenant for losses due to theft, burglary, or damages done by persons on the Project. 

ARTICLE 22. 
 DEFAULT BY TENANT

 22.1 The term “Event of Default” refers to the occurrence of any one (1) or more of the following: 

(a) Failure of Tenant to pay when due any sum required to be paid hereunder within five (5) days of receipt of written
notice from Landlord (the “Monetary Default”); provided, however, that after the first failure to pay any sum required to be paid hereunder in any twelve (12) month period, in the event that Tenant fails a second time to pay when due
any sum required to be paid hereunder during such twelve (12) month period, such failure shall be deemed to automatically constitute a Monetary Default without any obligation on Landlord to provide any additional written notice, and provided
further that Tenant acknowledges that any such written notice provided hereunder shall be in lieu of, and not in addition to, any notice to pay rent or quit pursuant to any applicable statutes; 

(b) Failure of Tenant, after thirty (30) days written notice thereof, to perform any of Tenant’s obligations,
covenants, or agreements except a Monetary Default, provided that if the cure of any such failure is not reasonably susceptible of performance within such thirty (30) day period, then an Event of Default of Tenant shall not be deemed to have
occurred so long as Tenant has promptly commenced and thereafter diligently prosecutes such cure to completion; 
 (c)
Tenant, or any guarantor of Tenant’s obligations under this Lease (the “Guarantor”), admits in writing that it cannot meet its obligations as they become due; or is declared insolvent according to any law; or assignment of
Tenant’s or Guarantor’s property is made for the benefit of creditors; or a receiver or trustee is appointed for Tenant or Guarantor or its property; or the interest of Tenant or Guarantor under this Lease is levied on under execution or
other legal process; or any petition is filed by or against Tenant or Guarantor to declare Tenant bankrupt or to delay, reduce, or modify Tenant’s debts or obligations; or any petition filed or other action taken to reorganize or modify
Tenant’s or Guarantor’s capital structure if Tenant is a corporation or other entity. Any such levy, execution, legal process, or petition filed against Tenant or Guarantor shall not constitute a breach of this Lease provided Tenant or
Guarantor shall vigorously contest the same by appropriate proceedings and shall remove or vacate the same within ninety (90) days from the date of its creation, service, or filing; 

  
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 (d) The abandonment of the Premises by Tenant; 

(e) The discovery by Landlord that any financial statement given by Tenant or any of its assignees, subtenants, successors-in-interest, or Guarantors was materially false; or 

(f) If Tenant or any Guarantor shall die, cease to exist as a corporation or partnership (subject to
Section 18.8), or be otherwise dissolved or liquidated, or shall make a transfer in fraud of creditors. 
 22.2 In
the event of any Event of Default by Tenant, Landlord, at its option, may pursue one or more of the following remedies without notice or demand in addition to all other rights and remedies provided for at law or in equity: 

(a) Landlord may continue this Lease in full force and effect, and this Lease shall continue in full force and effect as long
as Landlord does not terminate Tenant’s right to possession, and Landlord shall have the right to collect Rent when due. 

“The lessor has the remedy described in Civil Code Section 1951.4 (lessor may continue the lease in effect after lessee’s
breach and abandonment and recover rent as it becomes due, if lessee has the right to sublet or assign subject only to reasonable limitations).” 

(b) Landlord may terminate the Lease at any time by giving written notice to that effect. No act by Landlord other than giving
written notice to Tenant shall terminate this Lease, in which event Tenant shall immediately surrender the Premises to Landlord. Acts of maintenance, efforts to relet the Premises or the appointment of a receiver on Landlord’s initiative to
protect Landlord’s interest under this Lease shall not constitute a termination of Tenant’s right to possession. On termination, Landlord shall have the right to remove all personal property of Tenant and store it at Tenant’s cost and
to recover from Tenant as damages: (i) the worth at the time of award of unpaid Rent and other sums due and payable which had been earned at the time of termination; plus (ii) the worth at the time of award of the amount by which the
unpaid Rent and other sums due and payable which would have been payable after termination until the time of award exceeds the amount of the Rent loss that Tenant proves could have been reasonably avoided; plus (iii) the worth at the time of
award of the amount by which the unpaid Rent and other sums due and payable for the balance of the Term after the time of award exceeds the amount of the Rent loss that Tenant proves could be reasonably avoided; plus (iv) any other amount
necessary to compensate Landlord for all the detriment proximately caused by Tenant’s failure to perform Tenant’s obligations under this Lease, or which, in the ordinary course of things, would be likely to result therefrom, including,
without limitation, any costs or expenses incurred by Landlord, with respect to (B)-(D) to the extent reasonably proportionate to the remaining Lease Term: (A) in retaking possession of the Premises, including reasonable attorneys’ fees
and costs 

  
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therefor; (B) maintaining or preserving the Premises for reletting to a new tenant, including repairs or alterations to the Premises for the reletting; (C) leasing commissions;
(D) any other costs necessary or appropriate to relet the Premises; and (E) at Landlord’s election, such other amounts in addition to or in lieu of the foregoing as may be permitted from time to time by the laws of the State of
California. 
 The “worth at the time of award” of the amounts referred to in Sections 22.2(b)(i) and 22.2(b)(ii)
shall be calculated by allowing interest at the lesser of ten percent (10%) per annum or the maximum rate permitted by law, on the unpaid Rent and other sums due and payable from the termination date through the date of award. The “worth at the
time of award” of the amount referred to in Section 22.2(b)(iii) shall be calculated by discounting the amount at the discount rate of the Federal Reserve Bank of San Francisco at the time of award, plus one percent
(1%). Tenant waives redemption or relief from forfeiture under California Code of Civil Procedure Sections 1174 and 1179, or under any other present or future law, if Tenant is evicted or Landlord takes possession of the Premises by reason of
any Event of Default by Tenant. 
 22.3 If Landlord shall exercise any one or more remedies hereunder granted or otherwise available, it
shall not be deemed to be an acceptance or surrender of the Premises by Tenant whether by agreement or by operation of law; it is understood that such surrender can be effected only by the written agreement of Landlord and Tenant. 

22.4 Each right and remedy provided for in this Lease shall be cumulative and shall be in addition to every other right or remedy provided for
in this Lease or now or hereafter existing at law or in equity or by statute or otherwise, including, but not limited to, suits for injunctive relief and specific performance. The exercise or beginning of the exercise by Landlord of any one or more
of the rights or remedies provided for in this Lease or now or hereafter existing at law or in equity, or by statute or otherwise shall not preclude the simultaneous or later exercise by Landlord for any or all other rights or remedies provided for
in this Lease or now or hereafter existing at or in equity or by statute or otherwise. All such rights and remedies shall be considered cumulative and non-exclusive. All costs incurred by Landlord in
connection with collecting any Rent or other amounts and damages owing by Tenant pursuant to the provisions of this Lease, or to enforce any provision of this Lease, including reasonable attorneys’ fees from the date such matter is turned over
to an attorney, whether or not one or more actions are commenced by Landlord, shall also be recoverable by Landlord from Tenant, subject to Article 25. If any notice and grace period required under
subparagraphs 22.1(a) or (b) was not previously given, a notice to pay rent or quit, or to perform or quit, as the case may be, given to Tenant under any statute authorizing the forfeiture of leases for unlawful detainer
shall also constitute the applicable notice for grace period purposes required by subparagraphs 22.1(a) or (b). In such case, the applicable grace period under subparagraphs 22.1(a) or (b) and under the
unlawful detainer statute shall run concurrently after the one such statutory notice, and the failure of Tenant to cure the default within the greater of the two (2) such grace periods shall constitute both an unlawful detainer and an Event of
Default entitling Landlord to the remedies provided for in this Lease and/or by said statute. 

  
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 22.5 If Tenant should fail to make any payment or cure any default hereunder within the time
herein permitted and such failure constitutes an Event of Default (except in the case where if Landlord in good faith believes that action prior to the expiration of any cure period under Section 22.1 is necessary to
prevent damage to persons or property, in which case Landlord may act without waiting for such cure period to expire), Landlord, without being under any obligation to do so and without thereby waiving such default, may make such payment and/or
remedy such default for the account of Tenant (and enter the Premises for such purpose), and thereupon, Tenant shall be obligated and hereby agrees to pay Landlord, upon demand, all reasonable costs, expenses, and disbursements, plus ten percent
(10%) overhead cost incurred by Landlord in connection therewith. 
 22.6 Intentionally Omitted. 

22.7 Nothing contained in this Article 22 shall limit or prejudice the right of Landlord to prove and obtain as
damages in any bankruptcy, insolvency, receivership, reorganization, or dissolution proceeding, an amount equal to the maximum allowed by any statute or rule of law governing such a proceeding and in effect at the time when such damages are to be
proved, whether or not such amount be greater, equal, or less than the amounts recoverable, either as damages or Rent, referred to in any of the preceding provisions of this Article 22. Notwithstanding anything contained in
this Article to the contrary, any such proceeding or action involving bankruptcy, insolvency, reorganization, arrangement, assignment for the benefit of creditors, or appointment of a receiver or trustee, as set forth above, shall be considered to
be an Event of Default only when such proceeding, action, or remedy shall be taken or brought by or against the then holder of the leasehold estate under this Lease. 

22.8 Landlord is entitled to accept, receive, in check or money order, and deposit any payment made by Tenant for any reason or purpose or in
any amount whatsoever, and apply them at Landlord’s option to any obligation of Tenant, and such amounts shall not constitute payment of any amount owed, except that to which Landlord has applied them. No endorsement or statement on any check
or letter of Tenant shall be deemed an accord and satisfaction or recognized for any purpose whatsoever. The acceptance of any such check or payment shall be without prejudice to Landlord’s rights to recover any and all amounts owed by Tenant
hereunder and shall not be deemed to cure any other default nor prejudice Landlord’s rights to pursue any other available remedy, Landlord’s acceptance of partial payment of Rent does not constitute a waiver of any rights, including
without limitation any right Landlord may have to recover possession of the Premises. 
 22.9 In the event that Tenant’s right of
possession of the Premises is terminated prior to the end of the initial Term by reason of an Event of Default by Tenant, then immediately upon such termination, an amount shall be due and payable by Tenant to Landlord equal to the unamortized
portion as of that date (which amortization shall be based on an interest rate of eleven percent (11%) per annum and the number of months of unexpired Lease term) of the sum of (a) the cost of Landlord’s Work (if any), (b) the Allowance
(if any), (c) the value of any free Base Rent (i.e., the Base Rent stated in this Lease to be abated as an inducement to Tenant’s entering into this Lease) enjoyed as of that date by Tenant, and (d) the amount of all commissions paid by
Landlord in order to procure this Lease (collectively, the “Inducements”). Notwithstanding the foregoing, Landlord shall not be entitled to recover such unamortized portions of the Inducements as provided in this Section 22.9 if,
following an uncured default under this Lease by Tenant, Landlord elects to pursue its remedy against Tenant pursuant to California Civil Code Section 1951.4, or if Landlord recovers the discounted present value of all


  
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rent payable for the entire term of the Lease pursuant to California Civil Code Section 1951.2. To the extent Landlord recovers the discounted present value of some, but not all, of the rent
payable following the termination of this Lease resulting from Tenant’s default, the number of months of such rent so recovered by Landlord shall be subtracted from the “number of months of unexpired lease term” in the formula set
forth above. 
 22.10 Tenant waives the right to terminate this Lease on Landlord’s default under this Lease. Tenant’s sole remedy
on Landlord’s default is an action for damages or injunctive or declaratory relief. Landlord’s failure to perform any of its obligations under this Lease shall constitute a default by Landlord under this Lease if the failure continues for
thirty (30) days after written notice of the failure from Tenant to Landlord. If the required performance cannot be completed within thirty (30) days, Landlord’s failure to perform shall constitute a default under the Lease unless
Landlord undertakes to cure the failure within thirty (30) days and diligently and continuously attempts to complete this cure as soon as reasonably possible. All obligations of each party hereunder shall be construed as covenants, not
conditions. 
 ARTICLE 23. 

INTENTIONALLY OMITTED 
 ARTICLE 24.

 INTENTIONALLY OMITTED 
 ARTICLE
25. 
 ATTORNEYS’ FEES 

25.1 All costs and expenses, including reasonable attorneys’ fees (whether or not legal proceedings are instituted), involved in
collecting rents, enforcing the obligations of Tenant, or protecting the rights or interests of Landlord under this Lease, whether or not an action is filed, including without limitation the cost and expense of instituting and prosecuting legal
proceedings or recovering possession of the Premises after default by Tenant or upon expiration or sooner termination of this Lease, shall be due and payable by Tenant on demand, as Additional Rent, subject to the following sentence. In addition,
and notwithstanding the foregoing, if either party hereto shall file any action or bring any proceeding against the other party arising out of this Lease or for the declaration of any rights hereunder, the prevailing party in such action shall be
entitled to recover from the other party all costs and expenses, including reasonable attorneys’ fees incurred by the prevailing party, as determined by the trier of fact in such legal proceeding. For purposes of this provision, the terms
“attorneys’ fees” or “attorneys’ fees and costs,” or “costs and expenses” shall mean the fees and expenses of legal counsel (including external counsel but excluding
in-house counsel) of the parties hereto, which include printing, photocopying, duplicating, mail, overnight mail, messenger, court filing fees, costs of discovery, and fees billed for law clerks, paralegals,
investigators and other persons not admitted to the bar for performing services under the supervision and direction of an attorney. In addition, the prevailing party shall be entitled to recover reasonable attorneys’ fees and costs incurred in
enforcing any judgment arising from a suit or proceeding under this Lease, including without limitation post-judgment motions, contempt proceedings, garnishment, levy and debtor and third party examinations, discovery and bankruptcy litigation,
without regard to schedule or rule of 

  
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court purporting to restrict such award. This post-judgment award of attorneys’ fees and costs provision shall be severable from any other provision of this Lease and shall survive any
judgment/award on such suit or arbitration and is not to be deemed merged into the judgment/award or terminated with the Lease. 
 ARTICLE
26. 
 NON-WAIVER 

26.1 Neither acceptance of any payment by Landlord from Tenant nor, failure by Landlord to complain of any action, non-action, or default of Tenant shall constitute a waiver of any of Landlord’s rights hereunder. Time is of the essence with respect to the performance of every obligation of each party under this Lease in
which time of performance is a factor. Waiver by either party of any right or remedy arising in connection with any default of the other party shall not constitute a waiver of such right or remedy or any other right or remedy arising in connection
with either a subsequent default of the same obligation or any other default. No right or remedy of either party hereunder or covenant, duty, or obligation of any party hereunder shall be deemed waived by the other party unless such waiver is in
writing, signed by the other party or the other party’s duly authorized agent. 
 ARTICLE 27. 

RULES AND REGULATIONS 
 27.1 Such
reasonable rules and regulations applying to all lessees in the Project for the safety, care, and cleanliness of the Project and the preservation of good order thereon are hereby made a part hereof as Exhibit D, and Tenant
agrees to comply with all such rules and regulations. Landlord shall have the right at all times to change such rules and regulations or to amend them in any reasonable and non-discriminatory manner as may be
deemed advisable by Landlord, all of which changes and amendments shall be sent by Landlord to Tenant in writing and shall be thereafter carried out and observed by Tenant. Landlord shall not have any liability to Tenant for any failure of any other
lessees of the Project to comply with such rules and regulations. 
 ARTICLE 28. 

ASSIGNMENT BY LANDLORD; RIGHT TO LEASE 

28.1 Landlord shall have the right to transfer or assign, in whole or in part, all its rights and obligations hereunder and in the Premises
and the Project. In such event, no liability or obligation shall accrue or be charged to Landlord with respect to the period from and after such transfer or assignment and assumption of Landlord’s obligations by the transferee or assignee. 

28.2 Landlord reserves the absolute right to effect such other tenancies in the Project as Landlord in the exercise of its sole business
judgment shall determine to best promote the interests of the Buildings or Project. Tenant does not rely on the fact, nor does Landlord represent, that any specific tenant or type or number of tenants shall, during the Lease Term, occupy any space
in the Buildings or Project. 

  
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 ARTICLE 29. 

LIABILITY OF LANDLORD 
 29.1 It is
expressly understood and agreed that the obligations of Landlord under this Lease shall be binding upon Landlord and its successors and assigns and any future owner of the Project only with respect to events occurring during its and their respective
ownership of the Project. In addition, Tenant agrees to look solely to Landlord’s interest in the Project for recovery of any judgment against Landlord arising in connection with this Lease, it being agreed that neither Landlord nor any
successor or assign of Landlord nor any future owner of the Project, nor any partner, shareholder, member, or officer of any of the foregoing shall ever be personally liable for any such judgment. The limitations of liability contained in this
Section 29.1 shall inure to the benefit of Landlord’s and the Landlord Parties’ present and future partners, beneficiaries, officers, directors, trustees, shareholders, agents and employees, and their respective
partners, heirs, successors and assigns. Under no circumstances shall any present or future partner of Landlord (if Landlord is a partnership), or trustee or beneficiary (if Landlord or any partner of Landlord is a trust), have any liability for the
performance of Landlord’s obligations under this Lease. Notwithstanding any contrary provision herein, neither Landlord nor the Landlord Parties shall be liable under any circumstances for any indirect or consequential damages or any injury or
damage to, or interference with, Tenant’s business, including but not limited to, loss of profits, loss of rents or other revenues, loss of business opportunity, loss of goodwill or loss of use, in each case, however occurring. 

ARTICLE 30. 
 SUBORDINATION AND
ATTORNMENT 
 30.1 This Lease, at Landlord’s option, shall be subordinate to any present or future mortgage, ground lease or
declaration of covenants regarding maintenance and use of any areas contained in any portion of the Building, and to any and all advances made under any present or future mortgage and to all renewals, modifications, consolidations, replacements, and
extensions of any or all of same. Tenant agrees, with respect to any of the foregoing documents, that no documentation other than this Lease shall be required to evidence such subordination. If any holder of a mortgage shall elect for this Lease to
be superior to the lien of its mortgage and shall give written notice thereof to Tenant, then this Lease shall automatically be deemed prior to such mortgage whether this Lease is dated earlier or later than the date of said mortgage or the date of
recording thereof. Tenant agrees to execute such documents as may be further required to evidence such subordination or to make this Lease prior to the lien of any mortgage or deed of trust, as the case may be and Tenant’s failure to do so
within ten (10) days after written demand shall, if Landlord so elects, constitute an Event of Default if such failure continues more than three (3) days after Landlord’s delivery of written notice thereof. Tenant hereby attorns to
all successor owners of the Building, whether or not such ownership is acquired as a result of a sale through foreclosure or otherwise. Landlord agrees to deliver to Tenant from any future mortgagee or beneficiary a written subordination and non-disturbance agreement in recordable form on the mortgagee’s or beneficiary’s then standard form providing that so long as Tenant performs all of the terms of this Lease, Tenant’s possession under
this Lease shall not be disturbed, this Lease will continue and Tenant shall not be joined by the holder of any mortgage or deed of trust in any action or proceeding to foreclose thereunder, except where such is necessary for jurisdictional or
procedural reasons. Landlord agrees to use commercially 

  
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reasonable efforts to obtain a written subordination and non-disturbance agreement from such mortgagee or beneficiary in a form reasonably acceptable to
Tenant; provided that Tenant shall pay all costs incurred by Landlord in obtaining that subordination and non-disturbance agreement. “Commercially reasonable efforts” of Landlord shall not require
Landlord to incur any cost, expense or liability to obtain such agreement, it being agreed that Tenant shall be responsible for any fee or review costs charged by such mortgagee or beneficiary. Landlord’s failure to obtain a non-disturbance, subordination and attornment agreement for Tenant in a form reasonably acceptable to Tenant shall have no effect on the rights, obligations and liabilities of Landlord and Tenant or be considered to
be a default by Landlord hereunder. 
 30.2 Tenant shall, at such time or times as Landlord may request, upon not less than ten
(10) days’ prior written request by Landlord, sign and deliver to Landlord an estoppel certificate, which shall be substantially in the form of Exhibit E, attached hereto (or such other commercially reasonable
form as may be required by any prospective mortgagee or purchaser of the Project, or any portion thereof), indicating therein any exceptions thereto that may exist at that time, and shall also contain such other information and agreements as may be
reasonably requested, it being intended that any such statement delivered pursuant to this Article may be relied upon by Landlord and by any prospective purchaser of all or any portion of the Project, or a holder or prospective holder of any
mortgage encumbering the Project, or any portion thereof. Tenant’s failure to deliver such statement within five (5) days after Landlord’s second written request therefor shall constitute an Event of Default (as that term is defined
elsewhere in this Lease) and shall conclusively be deemed to be an admission by Tenant of the matters set forth in the request for an estoppel certificate. 

30.3 Tenant shall deliver to Landlord at any time upon Landlord’s request, Tenant’s current audited financial statements, including
a balance sheet and profit and loss statement for the most recent prior year (collectively, the “Statements”), which Statements shall accurately and completely reflect the financial condition of Tenant. Landlord shall have the right to
deliver the same to any proposed purchaser of the Building or the Project, and to any encumbrancer of all or any portion of the Building or the Project. Landlord further agrees to keep the Tenant’s financials delivered to Landlord pursuant to
Section 30.3 and identified by Tenant in writing as confidential (the “Confidential Information”) in confidence for its information only and not to disclose the Confidential Information to anyone else, except (a) to the
directors, officers, employees, affiliates and advisors (including attorneys, counsels, consultants and financial advisors) of Landlord; (b) as required by law; (c) to any regulators having jurisdiction over Landlord’s businesses;
(d) to any purchaser or prospective purchaser of Landlord’s property in which Tenant is a tenant or subtenant and any lender holding a lien secured by such property; (e) in connection with any litigation between Tenant on the one hand
and Landlord on the other; and (f) to any investor or pension fund for which Landlord holds title to the property; provided that Landlord requires in writing that the parties in subparts (a), (d) and (f) hold such information
confidentially. Landlord agrees not to use such information for any other purposes unless it shall have first entered into a further written agreement with Tenant relating to that other use of the Confidential Information proposed by the Landlord.
Notwithstanding the foregoing, Landlord shall be free to use any of the following information obtained lawfully from others: (i) information which is, at the time of disclosure, in the public domain; (ii) information which, after
disclosure, enters the public domain, except where such entry is the result of a breach of this Lease; (iii) information which, prior to the disclosure, was 

  
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already known to Landlord; and; (iv) information which is rightfully received by Landlord from a third party. The provisions of this Section 30.3 with respect to confidentiality
supersede any prior confidentiality or nondisclosure agreements executed for the benefit of Tenant or its affiliates by on or behalf of the Landlord or any of its members. 

30.4 The Statements are represented and warranted by Tenant to be correct and to accurately and fully reflect Tenant’s true financial
condition as of the date thereof. 
 30.5 Landlord represents that, as of the date of this Lease, there is no (a) deed of trust or
mortgage encumbering the Project or (b) ground lease affecting the Building. 
 ARTICLE 31. 

HOLDING OVER 
 31.1 In the event
Tenant, or any party claiming under Tenant, retains possession of the Premises after the Expiration Date or Termination Date, such possession shall be that of a tenant at sufferance and an unlawful detainer. No tenancy or interest shall result from
such possession, and such parties shall be subject to immediate eviction and removal. Tenant or any such party shall pay Landlord, as Base Rent for the period of such holdover, a monthly amount equal to one hundred fifty percent (150%) of
(a) the Base Rent for the last period prior to the date of such termination, plus (b) Additional Rent attributable to Operating Expenses and Taxes as provided in Article 5 of this Lease during the time of holdover, together with all
other Additional Rent and other amounts payable pursuant to the terms of this Lease. Such tenancy at sufferance shall be subject to every other applicable term, covenant and agreement contained herein. Tenant shall also be liable for any and all
damages sustained by Landlord as a result of such holdover. Tenant shall vacate the Premises and deliver same to Landlord immediately upon Tenant’s receipt of notice from Landlord to so vacate. The Rent during such holdover period shall be
payable to Landlord on demand. Landlord’s acceptance of Rent if and after Tenant holds over shall not convert Tenant’s tenancy at sufferance to any other form of tenancy or result in a renewal or extension of the Term of this Lease, unless
otherwise specified by notice from Landlord to Tenant. 
 ARTICLE 32. 

SIGNS 
 32.1 No sign, symbol, or
identifying marks shall be put upon the Project, Building, in the halls, elevators, staircases, entrances, parking areas, or upon the doors or walls, without the prior written approval of Landlord in its sole discretion. Should such approval ever be
granted, all signs or lettering shall conform in all respects to the sign and/or lettering criteria established by Landlord and comply with all Applicable Laws. Landlord, at Landlord’s sole cost and expense, reserves the right to change the
door plaques as Landlord deems reasonably desirable. 
 32.2 Landlord shall, at Tenant’s sole cost and expense, install standard
signage at the entrance to the Premises, and one line of signage (the “Monument Signage”) on the Building monument sign and at the top of the Building (the “Building-top Signage”)
identifying Tenant’s name. The graphics, materials, color, design, lettering, size and specifications of 

  
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Tenant’s Monument Signage and Building-top Signage shall be subject to the reasonable approval of Landlord and all applicable governmental authorities
and shall conform to Landlord’s approved sign plan for the Building. At the expiration or earlier termination of this Lease or termination of Tenant’s sign rights as provided below, Landlord shall, at Tenant’s sole cost and expense,
cause the Monument Signage and Building-top Signage to be removed and the area of the monument sign and top of the Building affected by the Monument Signage and
Building-top Signage, as applicable, to be restored to the condition existing prior to the installation of Tenant’s Monument Signage and Building-top Signage. The
right to Monument Signage and Building-top Signage is personal to the initially named Tenant in this Lease and any Permitted Transferee of the Original Tenant who is an assignee of that Original Tenant’s
entire interest in this Lease. To the extent Tenant desires to change the name and/or logo set forth on the Monument Signage and/or Building-top Signage, such name and/or logo shall not have a name which
relates to an entity which is of a character or reputation, or is associated with a political faction or orientation, which is inconsistent with the quality of the Project, or which would otherwise reasonably offend a landlord of the Comparable
Buildings. All of Tenant’s rights to install and maintain the Building-top Signage at the top of the Building in accordance with this Section 32.2 shall terminate upon notice
from Landlord during any period in which Tenant or a Permitted Transferee ceases to occupy at least one entire floor of the Building. 

32.3 Landlord, at Tenant’s sole cost and expense, shall provide Tenant with Building standard lobby and suite signage. 

ARTICLE 33. 
 HAZARDOUS SUBSTANCES

 33.1 Except for those materials listed on Exhibit I attached hereto and general office supplies typically used in an office area
in the ordinary course of business, such as copier toner, liquid paper, glue, ink, and cleaning solvents (collectively, “Permitted Hazardous Materials”), for use in the manner for which they were designed, in such amounts as may be normal
for the office business operations conducted by Tenant in the Premises, neither Tenant nor its agents, employees, contractors, licensees, sublessees, assignees, concessionaires or invitees shall use, handle, store or dispose of any Hazardous
Materials in, on, under or about the Premises or the Project. Except for Hazardous Materials customarily used in connection with general office uses and those listed on Exhibit I, Tenant shall not cause or permit any Hazardous Material to be
used, stored, generated or disposed of on or in the Project or the Premises by Tenant, Tenant’s agents, employees, contractors, or invitees. Exhibit I shall also list applicable Environmental Protection Agency and California Hazardous Materials
codes for each waste stream. If any Hazardous Materials are used, stored, generated, or disposed of on or in the Premises by any Tenant Parties (as defined below) including those customarily used in connection with general office uses, or if the
Premises become contaminated by any release or discharge of a Hazardous Material by any Tenant Parties and any person in the Premises other than Landlord parties. Tenant shall indemnify, defend and hold harmless Landlord from and against any and all
claims, damages, fines, judgments, penalties, costs, liabilities, or losses (including, without limitation, a decrease in value of the Premises, damages caused by loss or restriction of rentable or usable space, or any damages caused by adverse
impact on marketing of the space, and any and all sums paid for settlement of claims, attorneys’ fees, consultant, and expert fees) arising during or after the term of this Lease and arising as a result of such


  
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contamination, release or discharge. This indemnification includes, without limitation, any and all costs incurred because of any investigation of the site or any
clean-up, remediation, removal, or restoration mandated by federal, state or local agency or political subdivision. As used herein, “Tenant Parties” means Tenant and the agents, contractors,
employees, subtenants, licensees and invitees of Tenant. Without limitation of the foregoing, if Tenant causes or permits the presence of any Hazardous Material on the Premises (other than due to subsurface migration from sources outside the
Premises) and the same results in any contamination, release or discharge, Tenant shall promptly, at its sole expense, take any and all necessary actions to return the Premises to the conditions existing prior to the presence of any such Hazardous
Material on the Premises. Tenant shall first obtain Landlord’s approval for any such remedial action. Furthermore, Tenant shall immediately notify Landlord of any inquiry, test, investigation or enforcement proceeding by or against Tenant or
the Project concerning the presence of any Hazardous Material of which Tenant receives notice. Tenant acknowledges that Landlord, at Landlord’s election, shall have the sole right, at Tenant’s expense, to negotiate, defend, approve and
appeal any action taken or order issued by any governmental authority with regard to any Hazardous Material contamination for which Tenant is obligated hereunder. 

33.2 Any storage, use or handling by Tenant at the Premises of any Hazardous Materials other than the Permitted Hazardous Materials shall be
subject to the prior written consent of Landlord, which consent of Landlord shall not be unreasonably withheld, conditioned or delayed by Landlord; provided they are reasonable in quantity and ancillary to Tenant’s permitted use of the
Premises. . Tenant agrees that Landlord shall be deemed to have acted reasonably in withholding consent to an additional Hazardous Material if the same Hazardous Material is then located in the soil or groundwater of the Project. In the event that
at any time on or after the date of this Lease Tenant wishes to use, store and/or handle within the Premises any Hazardous Materials other than the Permitted Hazardous Materials, then Tenant shall give prompt notice therefore to Landlord, which
notice from Tenant to Landlord shall include a request for the written consent of Landlord. Such notice shall identify the Hazardous Materials in question, the maximum quantity intended to store at any time, the manner in which such Hazardous
Materials are contemplated to be used, stored or handled, the estimate times and time frames within which such Hazardous Materials are contemplated to be used, stored and/or handled at the Premises by Tenant, and true and complete copy of an
appropriate Safety Data Sheet (“SDS”) showing the applicable Risk Levels relating thereto. Landlord hereby consents to the use, storage and handling within the Premises by Tenant of the Permitted Hazardous Materials so long as Tenant shall
use, store and handle the same at all times: 
 (a) in accordance with terms and conditions of this Paragraph 33.2; 

(b) in accordance with all Environmental Requirements; 

(c) only after taking all reasonable precautions and utilizing such engineering controls, at its sole cost and expense, as are
necessary to adequately prevent the release and dispersion of the Hazardous Material, and to adequately ventilate Hazardous Materials, odors and fumes in the Premises in accordance with health and safety standards and to prevent any Hazardous
Materials releases, odors and fumes from emanating from the Premises, including the installation of such reasonable control devises and the establishment of reasonable control procedures to eliminate such releases and odors wherever such Hazardous
Substances are used, handled and/or stored in the Premises; 

  
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 (d) in accordance with Tenant’s hazardous materials storage management plans
and procedures, emergency response procedures, and hazardous materials disposal procedures reviewed and approved by the Landlord, which approval shall not be unreasonably withheld; 

(e) subject to obtaining, and in accordance with the conditions under, any and all required permits and Landlord and/or
governmental approvals; and 
 (f) in amounts not in excess of the maximum amounts for same, as applicable, described in
Exhibit I or in the written consent to the same given to Tenant by Landlord. The quantities listed on Exhibit I are the maximum amount that Tenant may have at the Premises at any one time, and any increase in the quantities listed
shall be subject to Landlord’s prior written consent pursuant to the acceptable to Landlord terms in this Paragraph 33.2. 
 33.3 As
used herein, “Hazardous Material” means asbestos, any petroleum fuel, Polychlorinated Biphenyls (“PCBs”), biological or radiological and any hazardous or toxic substance, material or waste which is or becomes regulated by any
local governmental authority, the State of California or the United States government, including, but not limited to, any material or substance defined as a “hazardous waste”, “extremely hazardous waste”, “restricted
hazardous waste”, “hazardous substance”, “hazardous material”, “biological agents”, “biohazardous materials” or “toxic pollutant” under the California Health and Safety Code, the Resource
Conservation and Recovery Act and/or under the Comprehensive Environmental Response, Compensation and Liability Act, 42, U.S.C. Section T9901, et. seq., viruses and bioengineered materials, pharmaceuticals, Medical Waste as defined in 42 U.S.C.
6992 (1998) or any comparable law, drugs or other medical or research items and substances and any and all materials used in biomedical research for which special reporting, handling (including special security measures to prevent theft or misuse)
and/or disposal is required. 
 33.4 As used herein, the term “Environmental Requirements” means all applicable present and future
statutes, regulations, ordinances, rules, codes, judgments, permits, authorizations, orders, policies or other similar requirements of any governmental authority, agency or court regulating or relating to health, safety, or environmental conditions
on, under, or about the Premises or the environment and all industry standards, including, without limitation, the following: the Comprehensive Environmental Response, Compensation and Liability Act; the Resource Conservation and Recovery Act; the
Clean Air Act; the Clean Water Act; the Toxic Substances Control Act, the Chemical Hazards Regulation, the Transportation of Dangerous Goods Control Act and Regulation, and the Occupational Health and Safety Act and all state and local counterparts
thereto; including but not limited to all applicable California requirements, and any policies or rules promulgated thereunder as well as any County or City ordinances (including County waste management or public health ordinances and regulations)
that may operate independent of, or in conjunction with, the State programs, as well as the standards, policies and procedures set forth in the CDC/NIH publication Biosafety in Microbiological and Biomedical Laboratories, and any
common or civil law obligations including, without limitation, nuisance or trespass, and any other requirements of Article 34 of this Lease. 

  
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 33.5 Attached hereto as Exhibit I is a schedule of all Hazardous Materials that Tenant
uses in its operations, together with an outline of all procedures for handling and storage in the Premises, and removal from the Premises at the expiration of the Lease Term, of such Hazardous Materials. So long as Tenant complies with all
Environmental Requirements, Landlord consents to Tenant’s use of those Hazardous Materials in the amounts and manner of use disclosed in Exhibit I. 

33.6 For purposes of Environmental Requirements, to the extent authorized by law, Tenant is and shall be deemed to be the responsible party,
including without limitation, the “owner” and “operator” of Tenant’s “facility” and the “owner” of all Hazardous Materials brought on the Premises by Tenant, its agents, employees, contractors or
invitees, and the “generator” of all wastes, by-products, or residues generated, resulting, or produced therefrom; provided that Tenant shall not be deemed to be the “owner” or
“operator” or “generator” with respect to any Hazardous Materials existing on, in or under the Premises on the date possession of the Premises is tendered to Tenant (the “Pre-Existing
the Hazardous Materials”), except to the extent any hazard posed by such Pre-Existing Hazardous Materials is exacerbated by, or the cost to clean up, remove or remediate such Pre-Existing Hazardous Materials is increased as a result of, the negligence or willful misconduct of Tenant or any of Tenant’s employees, agents, contractors, assignees, or sublessees. 

33.7 With respect to any and all Hazardous Materials brought into the Project by Tenant, its agents, employees, invitees, sublessees or
contractors, Tenant shall, without any limitation and in addition to any other requirements of this Lease or any Environmental Requirements, and shall cause its agents, employees, invitees, sublessees and contractors to perform the following in a
prompt, timely and complete manner: 
 (a) Comply with all Environmental Requirements, including both requirements for the
handling, use and disposal of Hazardous Materials (including security regulations designed to prevent theft or misuse of Hazardous Substances). Tenant shall request any Hazardous Materials disposal service to use
un-branded vehicles at the Premises, Building and Project and, to the extent not required by applicable law, Tenant shall not post any external “Hazardous Materials” signage, or the like, on the
Premises, Building or Project; 
 (b) Comply with all Environmental Requirements for reporting, obtaining, keeping, and
submitting manifests, permits, material data sheets, inspection reports, and storage, use and disposal documentation; 
 (c)
Maintain on the Premises true and correct copies of all documents responsive to Section 33.7(b) above that are required to be kept for inspection by applicable governmental authorities and/or are required to be available to
Tenant’s employees; 

  
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 (d) Deliver to Landlord, within one (1) business day after delivery to the
applicable governmental entity, a copy of any notice, report, correspondence or documentation related to any alleged or actual violation or potential violation of any Environmental Requirements, provided that Tenant shall give Landlord verbal notice
as soon as possible of any violation of Environmental Requirements involving an imminent threat of damage to persons or property; 

(e) Maintain, update in compliance with Environmental Requirements (as the same may be amended from time to time) and submit to
Landlord complete, true and correct copies of Tenant’s written handling procedures, handbooks, training guides and guidelines (provided that Tenant acknowledges that no action of Landlord shall make Landlord liable for the contents or
inadequacies thereof); 
 (f) Maintain, update in compliance with Environmental Requirements (as the same may be amended from
time to time) and submit to Landlord complete, true and correct copies of Tenant’s written emergency procedures relating to unauthorized release of Hazardous Materials (provided that Tenant acknowledges that no action of Landlord shall make
Landlord liable for the contents or inadequacies thereof); 
 (g) If Landlord has reasonable cause to believe that a
violation of this Article 33 or a hazardous situation involving Hazardous Substances may have occurred or is reasonably likely to occur, then within five (5) days of Landlord’s request (or less as required by Landlord if Landlord
believes that the situation involves potential imminent danger to persons or property), submit written reports to Landlord regarding (or at Landlord’s option meet to discuss) Tenant’s use, transportation, generation, treatment, storage
and/or disposal of Hazardous Materials and provide evidence satisfactory to Landlord of Tenant’s compliance with all Environmental Requirements and this Lease; 

(h) Conduct such periodic reviews of employee procedures and past practices as are customary in the industry to reasonably
ensure compliance with all Environmental Requirements; 
 (i) Allow Landlord and/or Landlord’s agents and
representatives to enter and inspect the Premises, subject to Section 7.2, to check Tenant’s compliance with all Environmental Requirements and/or inspect any documents or materials required to be maintained by Tenant
under this Article 33, and fully cooperate and assist with any such investigation or inspection by Landlord and/or Landlord’s agents and representatives; 

(j) On or before the first time Tenant uses Hazardous Materials in the Premises, Tenant shall deliver to Landlord copies of one
or more Certifications showing that it has established procedure, practices and systems such that it will be conducting its use within the Premises in compliance with all Environmental Requirements. Tenant shall provide new or re-reviewed Certifications as they are prepared in the normal course of business, but not less frequently than once every two (2) years. If no such Certification has been prepared within one (1) year prior
to the time one is due, Tenant shall cause one to be prepared. If Tenant has prepared or received multiple Certifications, then all shall be delivered. 

  
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 (k) If Landlord reasonably believes that Tenant is not in compliance with all
Environmental Requirements, Landlord may cause an independent review of Tenant’s procedures for handling and disposing of Hazardous Materials to be conducted at Landlord’s sole cost and expense (which shall not be included as part of
Operating Expenses) by an independent third party consultant reasonably acceptable to Landlord and Tenant. If the independent review finds that Tenant is in violation of applicable Environmental Requirements, Tenant shall reimburse Landlord for the
actual cost of the review within thirty (30) days of receipt of an invoice therefor from Landlord. 
 (l) As used in
this Lease, “Certification” means a review of the applicable facilities or procedures either (i) conducted by an Independent Third Party, or (ii) conducted by Tenant and reviewed and approved in writing by an Independent Third
Party. As used with respect to Certifications, “Independent Third Party” shall mean either a private company that is not an Affiliate of Tenant or a governmental agency. 

33.8 Prior to the expiration or earlier termination of the Lease Term, Tenant shall provide a decommissioning report prepared or reviewed by a
qualified Independent Third Party showing Tenant’s compliance with all decommissioning rules and regulations and demonstrating that the Premises have been left in a clean and uncontaminated state. 

33.9 Tenant represents and warrants to Landlord that: 

(a) Tenant is familiar and proficient with all Environmental Requirements involved in or Tenant’s use of the Premises;

 (b) Tenant’s business, research and other practices on the Premises shall comply with all Environmental Requirements;
and 
 (c) Tenant has prepared written guidelines, employee training, handbooks and procedures in compliance with all
Environmental Requirements, shall continually update and amend the same as required by any changes to or new Environmental Requirements, and shall train all personnel on the Premises to comply with all Environmental Requirements. 

33.10 Notwithstanding anything to the contrary in this Lease, the provisions of this Article 33 shall survive the expiration or
termination of the Lease with respect to any events occurring prior to such expiration or termination. 
 33.11 Landlord hereby informs
Tenant, and Tenant hereby acknowledges, that the Premises and adjacent properties overlie a former solid waste landfill site commonly known as the Westport Landfill (“Former Landfill”). Landlord further informs Tenant, and Tenant hereby
acknowledges, that (i) prior testing has detected the presence of low levels of certain volatile and semi-volatile organic compounds and other hazardous substances in the groundwater, in the leachate from the landfilled solid waste, and/or in
certain surface waters of the Project, as more fully described in the California Regional Water Quality Control Board, San Francisco Bay Region’s (“Regional Board”) Order No. R2-2003-0074
(Updated Waste Discharge Requirements and Rescission of Order No. 94-181) (“Order”), (ii) methane gas is or may be generated by the landfilled solid waste (item “i” immediately
preceding and this item “ii” are 

  
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hereafter collectively referred to as the “Landfill Condition”), and (iii) the Premises and the Former Landfill are subject to the Order. The Order is attached hereto as
Exhibit H. As evidenced by their initials on said Exhibit H, Tenant acknowledges that Landlord has provided Tenant with copies of the Order, and Tenant acknowledges that Tenant and Tenant’s
experts (if any) have had ample opportunity to review the Order and that Tenant has satisfied itself as to the environmental conditions of the Property and the suitability of such conditions for Tenant’s intended use of the Property. Additional
environmental reports are available for Tenant’s review at Landlord’s offices. In the event the Regional Board determines that the majority of the Premises cannot be occupied for a period in excess of thirty (30) days due to the any
Hazardous Materials conditions related to the Landfill Condition, then, provided Tenant has not caused and/or contributed to the incident responsible for said occupancy restriction, Tenant may terminate this Lease provided Tenant gives Landlord
written notice within five (5) days of Tenant’s receipt of notice that the Premises cannot be occupied for the purpose referenced in this Lease of its election to so terminate the Lease in the event Tenant cannot occupy the majority of the
Premises at the conclusion of the thirty (30) day period. In the event said notice is received by Landlord as required herein and the majority of the Premises cannot be occupied as referenced above, this Lease shall thereafter terminate on the
date of termination referenced in said Tenant notice (which date shall not be less than thirty (30) days from the date the Premises are deemed un-occupiable). Tenant agrees to cooperate and provide
Landlord and the Regional Board or their authorized representatives, upon presentation of credentials, subject to Section 7.2, during normal business hours, immediate entry upon the Premises to assess any and all aspects of
the environmental condition of the Project and its use, including, but not limited to, conducting any environmental assessment or audit, taking samples of soil, groundwater or other water, air or building materials, the inspection of treatment
equipment, monitoring equipment or monitoring methods, or sampling of any discharge governed by the Order. 
 ARTICLE 34. 

COMPLIANCE WITH LAWS AND OTHER REGULATIONS 

34.1 Tenant, at its sole cost and expense, shall promptly comply with all laws, statutes, ordinances, and governmental rules, regulations, or
requirements now in force or which may hereafter become in force, of federal, state, county, and municipal authorities, including without limitation the Americans with Disabilities Act and the California Energy Code, Title 24, with the requirements
of any board of fire underwriters or other similar body now or hereafter constituted, and with any occupancy certificate issued pursuant to any law by any public officer or officers, which impose, any duty upon Landlord or Tenant, insofar as any
thereof relate to or affect the condition, use, alteration, or occupancy of the Premises. Landlord’s approval of Tenant’s plans for any improvements shall create no responsibility or liability on the part of Landlord for their
completeness, design sufficiency, or compliance with all laws, rules, and regulations of governmental agencies or authorities, including, but not limited to, the Americans with Disabilities Act.Tenant shall not be obligated to make any capital
improvements to the Premises in order to comply with Applicable Laws, except to the extent the capital improvement is required due to a Trigger Event (as defined below). As used herein, the term “Trigger Event” means one or more of the
following events or circumstances: 
 (a) Tenant’s particular use of the Premises (other than normal office uses); 

  
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 (b) The manner of conduct of Tenant’s business or operation of its
installations, equipment or other property outside those of normal office use; 
 (c) The performance of any improvements or
alterations or the installation of any Tenant systems; or 
 (d) The breach of any of Tenant’s obligations under this
Lease. 
 34.2 As an inducement to Landlord to enter into this Lease, Tenant hereby represents and warrants that: (i) Tenant is not,
nor, to its knowledge, is it owned or controlled directly or indirectly by, any person, group, entity or nation named on any list issued by the Office of Foreign Assets Control of the United States Department of the Treasury pursuant to
Executive Order 13224 or any similar list or any law, order, rule or regulation or any Executive Order of the President of the United States as a terrorist, “Specially Designated National and Blocked Person” or other banned or
blocked person (any such person, group, entity or nation being hereinafter referred to as a “Prohibited Person”); (ii) Tenant is not (nor to its knowledge is it owned or controlled, directly or indirectly, by any person, group, entity
or nation which is) acting directly or indirectly for or on behalf of any Prohibited Person; and (iii) neither Tenant (nor to its knowledge any person, group, entity or nation which owns or controls Tenant, directly or indirectly) has conducted
or will conduct business or has engaged or will engage in any transaction or dealing with any Prohibited Person, including without limitation any assignment of this Lease or any subletting of all or any portion of the Premises or the making or
receiving of any contribution of funds, goods or services to or for the benefit of a Prohibited Person. Tenant covenants and agrees (a) to comply with all requirements of law relating to money laundering, anti-terrorism, trade embargos and
economic sanctions, now or hereafter in effect, (b) to immediately notify Landlord in writing if any of the representations, warranties or covenants set forth in this Section 34.2 are no longer true or have been
breached or if Tenant has a reasonable basis to believe that they may no longer be true or have been breached, (c) not to use funds from any Prohibited Person to make any payment due to Landlord under the Lease and (d) at the request of
Landlord, to provide such information as may be requested by Landlord to determine Tenant’s compliance with the terms hereof. Any breach by Tenant of the foregoing representations and warranties shall be deemed an Event of Default by Tenant
under this Lease and shall be covered by the indemnity provisions of Section 21.1 above. The warranties contained in this subsection shall be continuing in nature and shall survive the expiration or earlier termination of
this Lease. 
 34.3 Pursuant to California Civil Code Section 1938, Tenant is hereby notified that, as of the date hereof, the Project
has not undergone an inspection by a “Certified Access Specialist” and except to the extent expressly set forth in this Lease, Landlord shall have no liability or responsibility to make any repairs or modifications to the Premises or the
Project in order to comply with accessibility standards. The following disclosure is hereby made pursuant to applicable California law: “A Certified Access Specialist (CASp) can inspect the subject premises and determine whether the subject
premises comply with all of the applicable construction-related accessibility standards under state law. Although state law does not require a CASp inspection of the subject premises, the commercial property owner or lessor may not prohibit the
lessee or tenant from obtaining a CASp inspection of the subject premises for the occupancy or potential occupancy of the lessee or tenant, if requested by the lessee or tenant. The 

  
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parties shall mutually agree on the arrangements for the time and manner of the CASp inspection, the payment of the fee for the CASp inspection, and the cost of making any repairs necessary to
correct violations of construction-related accessibility standards within the premises.” Tenant acknowledges that Landlord has made no representation regarding compliance of the Premises or the Project with accessibility standards, except as
expressly set forth herein. Any CASp inspection shall be conducted in compliance with reasonable rules in effect at the Building with regard to such inspections and shall be subject to Landlord’s prior written consent. 

ARTICLE 35. 
 SEVERABILITY 

35.1 This Lease shall be construed in accordance with the laws of the State of California. If any clause or provision of this Lease is
illegal, invalid, or unenforceable under present or future laws effective during the Term, then it is the intention of the parties hereto that the remainder of this Lease shall not be affected thereby. It is also the intention of both parties that
in lieu of each clause or provision that is illegal, or unenforceable, there is added as a part of this Lease a clause or provision as similar in terms to such illegal, invalid, or unenforceable clause or provision as may be possible and still be
legal, valid, and enforceable. 
 ARTICLE 36. 

NOTICES 
 36.1 All notices,
demands, designations, approvals or other communications (collectively, “Notices”) given or required to be given by either party to the other hereunder or by law shall be in writing, shall be (i) sent by United States certified or
registered mail, postage prepaid, return receipt requested (“Mail”), (ii) delivered by a nationally recognized overnight courier, or (iii) delivered personally. Any Notice shall be sent, or delivered, as the case may be, to
Tenant at the appropriate address set forth in the Basic Lease Information, or to such other place as Tenant may from time to time designate in a Notice to Landlord, or to Landlord at the addresses set forth in the Basic Lease Information, or to
such other places as Landlord may from time to time designate in a Notice to Tenant. Any Notice will be deemed given (A) three (3) business days after the date it is posted if sent by Mail, (B) the date the overnight courier delivery
is made, or (C) the date personal delivery is made. Any Notice given by an attorney on behalf of Landlord or by Landlord’s managing agent shall be considered as given by Landlord and shall be fully effective. 

ARTICLE 37. 
 OBLIGATIONS OF,
SUCCESSORS, PLURALITY, GENDER 
 37.1 Landlord and Tenant agree that all the provisions hereof are to be construed as covenants and
agreements as though the words imparting such covenants were used in each paragraph hereof, and that, except as restricted by the provisions hereof, shall bind and inure to the benefit of the parties hereto, their respective successors, and assigns.
If the rights of Tenant hereunder are owned by two or more parties, or two or more parties are designated herein as Tenant, then all such parties shall be jointly and severally liable for the obligations of Tenant hereunder. Whenever the singular or
plural number, masculine or feminine or neuter gender is used herein, it shall equally include the other. 

  
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 ARTICLE 38. 

ENTIRE AGREEMENT 
 38.1 This Lease
and any attached addenda or exhibits constitute the entire agreement between Landlord and Tenant. No prior or contemporaneous written or oral leases or representations shall be binding. This Lease shall not be amended, changed, or extended except by
written instrument signed by Landlord and Tenant. 
 38.2 THE SUBMISSION OF THIS LEASE BY LANDLORD, ITS AGENT OR REPRESENTATIVE FOR
EXAMINATION OR EXECUTION BY TENANT DOES NOT CONSTITUTE AN OPTION OR OFFER TO LEASE THE PREMISES UPON THE TERMS AND CONDITIONS CONTAINED HEREIN OR A RESERVATION OF THE PREMISES IN FAVOR OF TENANT, IT BEING INTENDED HEREBY THAT THIS LEASE SHALL ONLY
BECOME EFFECTIVE UPON THE EXECUTION HEREOF BY LANDLORD AND DELIVERY OF A FULLY EXECUTED LEASE TO TENANT. 
 ARTICLE 39. 

CAPTIONS 
 39.1 Paragraph captions
are for Landlord’s and Tenant’s convenience only, and neither limit nor amplify the provisions of this Lease. 
 ARTICLE 40. 

CHANGES 
 40.1 Should any
mortgagee require a modification of this Lease, which modification will not bring about any increased cost or expense to Tenant or in any other way substantially and adversely change the rights and obligations of Tenant hereunder or materially
interfere with Tenant’s occupancy of the Premises, then and in such event Tenant agrees that this Lease may be so modified. 
 ARTICLE
41. 
 AUTHORITY 
 41.1 All
rights and remedies of Landlord under this Lease, or those which may be provided by law, may be exercised by Landlord in its own name individually, or in its name by its agent, and all legal proceedings for the enforcement of any such rights or
remedies, including distress for Rent, unlawful detainer, and any other legal or equitable proceedings may be commenced and prosecuted to final judgment and be executed by Landlord in its own name individually or in its name by its agent. Landlord
and Tenant each represent to the other that each has full power and authority to execute this Lease and to make and perform the agreements herein contained, and Tenant expressly stipulates that any rights or remedies available to Landlord, either by
the provisions of this Lease or otherwise, may be enforced by Landlord in its own name individually or in its name by its agent or principal. 

  
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 ARTICLE 42. 

BROKERAGE 
 42.1 Tenant represents
and warrants to Landlord that it has dealt only with Tenant’s Broker and Landlord’s Broker, in negotiation of this Lease. Landlord shall make payment of the brokerage fee due the Landlord’s Broker pursuant to and in accordance with a
separate agreement between Landlord and Landlord’s Broker. Landlord’s Broker shall pay a portion of its commission to Tenant’s Broker pursuant to a separate agreement between Landlord’s Broker and Tenant’s Broker. Except for
amounts owing to Landlord’s Broker and Tenant’s Broker, each party hereby agrees to indemnify and hold the other party harmless of and from any and all damages, losses, costs, or expenses (including, without limitation, all attorneys’
fees and disbursements) by reason of any claim of or liability to any other broker or other person claiming through the indemnifying party and arising out of or in connection with the negotiation, execution, and delivery of this Lease. Additionally,
except as may be otherwise expressly agreed upon by Landlord in writing, Tenant acknowledges and agrees that Landlord and/or Landlord’s agent shall have no obligation for payment of any brokerage fee or similar compensation to any person with
whom Tenant has dealt or may in the future deal with respect to leasing of any additional or expansion space in the Building or renewals or extensions of this Lease. 

ARTICLE 43. 
 EXHIBITS 

43.1 Exhibits A through J are attached hereto and incorporated herein for all purposes and are hereby
acknowledged by both parties to this Lease. 
 ARTICLE 44. 

APPURTENANCES 
 44.1 The Premises
include the right of ingress and egress thereto and therefrom; however, Landlord reserves the right to make changes and alterations to the Building, fixtures and equipment thereof, in the street entrances, doors, halls, corridors, lobbies, passages,
elevators, escalators, stairways, toilets and other parts thereof which Landlord may deem necessary or desirable; provided that Tenant at all times has a means of access to the Premises (subject to a temporary interruption due to Force Majeure
Events or necessary maintenance that cannot reasonably be performed without such interruption of access). Subject to the foregoing, neither this Lease nor any use by Tenant of the Building or any passage, door, tunnel, concourse, plaza or any other
area connecting the garages or other buildings with the Building, shall give Tenant any right or easement of such use and the use thereof may, without notice to Tenant, be regulated or discontinued at any time and from time to time by Landlord
without liability of any kind to Tenant and without affecting the obligations of Tenant under this Lease. 
 ARTICLE 45. 

PREJUDGMENT REMEDY, REDEMPTION, COUNTERCLAIM, AND JURY 

45.1 Tenant, for itself and for all persons claiming through or under it, hereby expressly waives any and all rights which are, or in the
future may be, conferred upon Tenant by any present or future law to redeem the Premises, or to any new trial in any action for ejection 

  
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under any provisions of law, after reentry thereupon, or upon any part thereof, by Landlord, or after any warrant to dispossess or judgment in ejection. If Landlord shall acquire possession of
the Premises by summary proceedings, or in any other lawful manner without judicial proceedings, it shall be deemed a reentry within the meaning of that word as used in this Lease. In the event that Landlord commences any summary proceedings or
action for nonpayment of Rent or other charges provided for in this Lease, Tenant shall not interpose any counterclaim of any nature or description in any such proceeding or action unless such counterclaim is mandatory. Tenant and Landlord both
waive a trial by jury of any or all issues arising in any action or proceeding between the parties hereto or their successors, under or connected with this Lease, or any of its provisions. 

ARTICLE 46. 
 RECORDING 

46.1 Tenant shall not record this Lease but will, at the request of Landlord, execute a memorandum or notice thereof in recordable form
satisfactory to both Landlord and Tenant specifying the date of commencement and expiration of the Term of this Lease and other information required by statute. Either Landlord or Tenant may then record said memorandum or notice of lease at the cost
of the recording party. 
 ARTICLE 47. 

MORTGAGEE PROTECTION 
 47.1 Tenant
agrees to give any mortgagees and/or trust deed holders having a lien on Landlord’s interest in the Project, by registered mail, a copy of any notice of default served upon Landlord, provided that prior to such notice Tenant has been notified,
in writing of the address of such mortgagees and/or trust deed holders. Tenant further agrees that if Landlord shall have failed to cure such default within the time provided for in this Lease, then such mortgagees and/or trust deed holders shall
have an additional thirty (30) days within which to cure such default or if such default cannot be cured within that time, then such additional time as may be necessary to cure such default (including but not limited to commencement of
foreclosure proceedings, if necessary to effect such cure) in which event this Lease shall not be terminated while such remedies are being so diligently pursued. 

ARTICLE 48. 
 OTHER LANDLORD
CONSTRUCTION 
 48.1 Tenant acknowledges that portions of the Project may be under construction following Tenant’s occupancy of the
Premises, and that such construction may result in levels of noise, dust, odor, obstruction of access, etc. which are in excess of that present in a fully constructed project. Tenant hereby waives any and all rent offsets or claims of constructive
eviction which may arise in connection with such construction. If any excavation or construction is made adjacent to, upon or within the Building, or any part thereof, Tenant shall afford to any and all persons causing or authorized to cause such
excavation or construction license to enter upon the Premises for the purpose of doing such work as such persons shall deem necessary to preserve the Building or any portion thereof from injury or damage and to support the same by proper
foundations, braces and supports, without any claim for damages or 
 indemnity or abatement of Rent (subject to the express provisions of this Lease), or of
a constructive or actual eviction of Tenant. 

  
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 48.2 It is specifically understood and agreed that Landlord has no obligation and has made no
promises to alter, remodel, improve, renovate, repair or decorate the Premises, the Building, or any part thereof and that no representations respecting the condition of the Premises or the Building have been made by Landlord to Tenant except as
specifically set forth herein or in the Tenant Work Letter. However, Tenant hereby acknowledges that Landlord is currently renovating or may during the Term of this Lease renovate, improve, alter, or modify (collectively, the
“Renovations”) the Project, the Building and/or the Premises, including without limitation the Parking Facilities (as defined below), the Common Areas, and the systems and equipment, roof and structural portions of the same. Tenant hereby
agrees that such Renovations and Landlord’s actions in connection with such Renovations shall in no way constitute a constructive eviction of Tenant nor entitle Tenant to any abatement of Rent. Landlord shall have no responsibility and shall
not be liable to Tenant for any direct or indirect injury to or interference with Tenant’s business arising from the Renovations, nor shall Tenant be entitled to any compensation or damages from Landlord for loss of the use of the whole or any
part of the Premises or of Tenant’s personal property or improvements resulting from the Renovations, or for any inconvenience or annoyance occasioned by such Renovations for Landlord’s actions in connection with such Renovations, or for
any inconvenience or annoyance occasioned by such Renovations or Landlord’s actions in connection with such Renovations. In exercising it’s rights under this Article 48 or Article 49 below, Landlord shall
make commercially reasonable efforts to minimize the disruption to Tenant’s business operations during standard business hours and shall not prevent access to the Premises or materially interfere with Tenant’s parking rights; provided that
the relocation of Tenant’s parking spaces to different parking facilities of the Project shall not be deemed to materially interfere with Tenant’s parking rights. 

ARTICLE 49. 
 PARKING 

49.1 The use by Tenant, its employees and invitees, of the parking facilities of the Project (the “Parking Facilities”) shall be on
the terms and conditions set forth in Exhibit D-1 attached hereto and by this reference incorporated herein and shall be subject to such other agreement between Landlord and Tenant as
may hereinafter be established and to such other rules and regulations as Landlord may establish. Tenant, its employees and invitees shall use no more than the Maximum Parking Allocation. Tenant’s use of the parking spaces shall be
confined to the Project. If, in Landlord’s reasonable business judgment, it becomes necessary, Landlord shall exercise due diligence to cause the creation of cross-parking easements and such other agreements as are necessary to permit Tenant,
its employees and invitees to use parking spaces on properties and buildings which are separate legal parcels from the Project. Tenant acknowledges that other tenants of the Project and the tenants of the other buildings, their employees and
invitees, may be given the right to park at the Project. Landlord reserves the right to change any existing or future parking area, roads, or driveways, or increase or decrease the size thereof and make any repairs or alterations it deems necessary
to the parking area, roads and driveways and Landlord agrees to use commercially reasonable efforts to minimize any interference with Tenant’s parking in the course of such repairs or alterations. Landlord agrees not to grant rights to park in
the Project that exceed the available parking spaces in the Project by more than is customary for parking for projects comparable to the Project. 

  
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 ARTICLE 50. 

ELECTRICAL CAPACITY 
 Tenant covenants and agrees
that at all times, its use of electric energy shall never exceed the capacity of the existing feeders to the Building or the risers of wiring installation. Any riser or risers to supply Tenant’s electrical requirements upon written request of
Tenant shall be installed by Landlord at the sole cost and expense of Tenant, if, in Landlord’s sole judgment, the same are necessary and will not cause or create a dangerous or hazardous condition or entail excess or unreasonable alterations,
repairs or expense or interfere with or disrupt other tenants or occupants. In addition to the installation of such riser or risers, Landlord will also, at the sole cost and expense of Tenant, install all other equipment proper and necessary in
connection therewith subject to the aforesaid terms and conditions. 
 ARTICLE 51. 

OPTION TO EXTEND LEASE 
 51.1
Extension Option. Tenant shall have the option to extend this Lease (the “Extension Option”) for one additional term of five (5) years (the “Extension Period”), upon the terms and conditions hereinafter set forth:

 (a) If the Extension Option is exercised, then the Base Rent per annum for such Extension Period (the “Option Rent”) shall be
an amount equal to the Fair Market Rental Value (as defined hereinafter) for the Premises as of the commencement of the Extension Option for such Extension Period. 

(b) The Extension Option must be exercised by Tenant, if at all, only at the time and in the manner provided in this
Section 51.1(b). 
 (i) If Tenant wishes to exercise the Extension Option, Tenant must, on or before the date
occurring nine (9) months before the expiration of the initial Lease Term (but not before the date that is twelve (12) months before the expiration of the initial Lease Term), exercise the Extension Option by delivering written notice (the
“Exercise Notice”) to Landlord. If Tenant timely and properly exercises its Extension Option, the Lease Term shall be extended for the Extension Period upon all of the terms and conditions set forth in the Lease, as amended, except that
the Base Rent for the Extension Period shall be as provided in Section 51.1(a) and Tenant shall have no further options to extend the Lease Term. 

(ii) If Tenant fails to deliver a timely Exercise Notice, Tenant shall be considered to have elected not to exercise the Extension Option.

 (c) It is understood and agreed that the Extension Option hereby granted is personal to Tenant and is not transferable except to a
Permitted Transferee in connection with an assignment of Tenant’s entire interest in this Lease. In the event of any assignment of this Lease or subletting of all of the Premises or more than fifty percent (50%) thereof (other than to a
Permitted Transferee), the Extension Option shall automatically terminate and shall thereafter be null and void. 

  
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 (d) Tenant’s exercise of the Extension Option shall, if Landlord so elects in its absolute
discretion, be ineffective in the event that (i) an Event of Default by Tenant remains uncured at the time of delivery of the Exercise Notice or at the commencement of the Extension Period, or (ii) Tenant shall have reduced the size of the
Premises below the size of the initial Premises by agreement with Landlord or pursuant to an express right in this Lease. 
 51.2 Fair
Market Rental Value. The provisions of this Section shall apply in any instance in which this Lease provides that the Fair Market Rental Value is to apply. 

(a) “Fair Market Rental Value” means the annual amount per square foot that a willing tenant would pay and a willing landlord would
accept in arm’s length negotiations, without any additional inducements, for a lease of the applicable space on the applicable terms and conditions for the applicable period of time. Fair Market Rental Value shall be determined by Landlord
considering the most recent new direct leases (and market renewals and extensions, if applicable) in the Building and in Comparable Buildings in the Market Area. 

(b) In determining the rental rate of comparable space, the parties shall include all escalations and take into consideration the following
concessions: 
 (i) Rental abatement concessions, if any, being granted to tenants in connection with the comparable space; 

(ii) Tenant improvements or allowances provided or to be provided for the comparable space, taking into account the value of the existing
improvements in the Premises, based on the age, quality, and layout of the improvements. 
 (c) If in determining the Fair Market Rental
Value the parties determine that the economic terms of leases of comparable space include a tenant improvement allowance, Landlord may, at Landlord’s sole option, elect to do the following: 

(i) Grant some or all of the value of the tenant improvement allowance as an allowance for the refurbishment of the Premises; and 

(ii) reduce the Base Rent component of the Fair Market Rental Value to be an effective rental rate that takes into consideration the total
dollar value of that portion of the tenant improvement allowance that Landlord has elected not to grant to Tenant (in which case that portion of the tenant improvement allowance evidenced in the effective rental rate shall not be granted to Tenant).

 51.3 Determination of Fair Market Rental Value. The determination of Fair Market Rental Value shall be as provided in this
Section 51.3. 

  
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 (a) Negotiated Agreement. Landlord and Tenant shall diligently attempt in good faith to
agree on the Fair Market Rental Value on or before the date (the “Outside Agreement Date”) that is five (5) months prior to the date upon which the Extension Period is to commence. 

(b) Parties’ Separate Determinations. If Landlord and Tenant fail to reach agreement on or before the Outside Agreement Date,
Landlord and Tenant shall each make a separate determination of the Fair Market Rental Value and notify the other party of this determination within five (5) days after the Outside Agreement Date. 

(i) Two Determinations. If each party makes a timely determination of the Fair Market Rental Value, those determinations shall be
submitted to arbitration in accordance with subsection (c). 
 (ii) One Determination. If Landlord or Tenant fails to make a
determination of the Fair Market Rental Value within the five-day period, that failure shall be conclusively considered to be that party’s approval of the Fair Market Rental Value submitted within the five-day period by the other party. 
 (c) Arbitration. If both parties make timely individual
determinations of the Fair Market Rental Value under subsection (b), the Fair Market Rental Value shall be determined by arbitration under this subsection (c). 

(i) Scope of Arbitration. The determination of the arbitrators shall be limited to the sole issue of whether Landlord’s or
Tenant’s submitted Fair Market Rental Value is the closest to the actual Fair Market Rental Value as determined by the arbitrators, taking into account the requirements of Section 51.2. 

(ii) Qualifications of Arbitrator(s). The arbitrators must be licensed real estate brokers who have been active in the leasing of
commercial multi-story properties in the Market Area over the five-year period ending on the date of their appointment as arbitrator(s). 

(iii) Parties’ Appointment of Arbitrators. Within fifteen (15) days after the Outside Agreement Date, Landlord and Tenant
shall each appoint one arbitrator and notify the other party of the arbitrator’s name and business address. 
 (iv) Appointment of
Third Arbitrator. If each party timely appoints an arbitrator, the two (2) arbitrators shall, within ten (10) days after the appointment of the second arbitrator, agree on and appoint a third arbitrator (who shall be qualified under
the same criteria set forth above for qualification of the initial two (2) arbitrators) and provide notice to Landlord and Tenant of the arbitrator’s name and business address. 

(v) Arbitrators’ Decision. Within thirty (30) days after the appointment of the third arbitrator, the three (3)
arbitrators shall decide whether the parties will use Landlord’s or Tenant’s submitted Fair Market Rental Value and shall notify Landlord and Tenant of their decision. The decision of the majority the three (3) arbitrators shall be
binding on Landlord and Tenant. 

  
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 (vi) If Only One Arbitrator is Appointed. If either Landlord or Tenant fails to appoint
an arbitrator within fifteen (15) days after the Outside Agreement Date, the arbitrator timely appointed by one of them shall reach a decision and notify Landlord and Tenant of that decision within thirty (30) days after the
arbitrator’s appointment. The arbitrator’s decision shall be binding on Landlord and Tenant. 
 (vii) If Only Two Arbitrators
Are Appointed. If each party appoints an arbitrator in a timely manner, but the two (2) arbitrators fail to agree on and appoint a third arbitrator within the required period, the arbitrators shall be dismissed without delay and the issue
of Fair Market Rental Value shall be submitted to binding arbitration under the real estate arbitration rules of JAMS, subject to the provisions of this section. 

(viii) If No Arbitrator Is Appointed. If Landlord and Tenant each fail to appoint an arbitrator in a timely manner, the matter to be
decided shall be submitted without delay to binding arbitration under the real estate arbitration rules of JAMS subject the provisions of this Section 51.3(c). 

51.4 Cost of Arbitration. The cost of the arbitration shall be paid by the party whose submitted Fair Market Rental Value is not
selected by the arbitrators. 
 ARTICLE 52. 

TELECOMMUNICATIONS LINES AND EQUIPMENT 

52.1 Tenant may install, maintain, replace, remove or use any electrical, communications or computer wires and cables (collectively, the
“Lines”) at the Building in or serving solely the Premises, provided that (i) Tenant shall obtain Landlord’s prior written consent, use an experienced and qualified contractor approved in writing by Landlord, and comply with all
of the other provisions of Articles 8 and 15 of this Lease, (ii) an acceptable space for additional Lines shall be maintained for existing and future occupants of the Building, as determined in Landlord’s reasonable opinion, (iii) the
Lines therefor (including riser cables) shall be appropriately insulated to prevent excessive electromagnetic fields or radiation, and shall be surrounded by a protective conduit reasonably acceptable to Landlord, (iv) any new Lines servicing
the Premises shall comply with all applicable governmental laws and regulations, (v) as a condition to permitting the installation of new Lines, Landlord may require that Tenant remove existing Lines located in or serving the Premises and
repair any damage in connection with such removal, and (vi) Tenant shall pay all costs in connection therewith. Landlord reserves the right to require that Tenant remove any Lines located in or serving the Premises which are installed by Tenant
in violation of these provisions, or which are at any time in violation of any laws or represent a dangerous or potentially dangerous condition. Landlord further reserves the right to require that Tenant remove any and all Lines installed by Tenant
located in or serving the Premises upon the expiration of the Term or upon any earlier termination of this Lease. 

  
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 ARTICLE 53. 

ERISA 
 53.1 It is understood that
from time to time during the Lease Term, Landlord may be subject to the provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”) and as a result may be prohibited by law from engaging in certain transactions.
Tenant represents and warrants to the best of its knowledge after reasonable inquiry that at the time this Lease is entered into and at any time thereafter when its terms are amended or modified, neither Tenant nor its affiliates (within the meaning
of part VI(c) of Department of Labor Prohibited Transaction Class Exemption 84-14 (“PTE 84-14”, as amended), has or will have the authority to appoint or
terminate The Prudential Insurance Company of America (“Prudential”) as an investment manager to any employee benefit plan then holding a ten percent (10%) or greater interest in the Prudential separate account PRISA II, nor the authority
to negotiate the terms of any management agreement between Prudential and any such employee pension benefit plan for its investment in PRISA II. Further, Tenant is not “related” to Prudential within the meaning of part VI(h) of PTE 84-14. 
 ARTICLE 54. 

TENANT’S RIGHT OF FIRST OFFER 

54.1 As used herein, “Offer Space” means space on the first floor of the Building. Landlord shall from time to time give Tenant
a written notice (the “Availability Notice”) identifying the particular Offer Space (the “Specific Offer Space”) that is Available (as defined below) or that Landlord believes will become Available within ninety (90) days.
As used herein, “Available” means that the space (i) is not part of the Premises, and (ii) is not then subject to a lease; provided, however, Landlord’s obligations shall not apply if the current tenant thereof has an
option to extend that it wishes to (or has the right to) exercise. 
 54.2 If Landlord determines that any Specific Offer Space is Available
or will become Available within ninety (90) days, Landlord shall endeavor to within twenty (20) business days thereafter deliver to Tenant an Availability Notice identifying the Specific Offer Space that is Available or will become
Available within ninety (90) days; provided that in any event Landlord shall give such Availability Notice before entry into a lease of the Specific Offer Space with a third party. 

54.3 The location and configuration of the Specific Offer Space shall be determined by Landlord in its reasonable discretion; provided that
Landlord shall have no obligations to designate Specific Offer Space that would result in any space not included in the Specific Offer Space being not Configured For Leasing (as defined below). For purposes of this Lease, “Configured For
Leasing” means the applicable space must have convenient access to the central corridor on the applicable floor and must have a size and configuration that complies with all applicable building codes and other laws and is such that Landlord
judges, in its reasonable discretion, that Landlord will be able to lease such space to a third party. The Availability Notice shall: 

(a) Describe the particular Specific Offer Space (including rentable area, usable area and location); 

(b) Describe the particular Specific Offer Space (including rentable area, usable area and location); 

  
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 (c) State the date (the “Specific Offer Space Delivery Date”) the space
will be available for delivery to Tenant; 
 (d) Specify the Base Rent for the Specific Offer Space; 

(e) Specify the increase in the security deposit that will apply to reflect the addition of the Specific Offer Space to the
Premises; and 
 (f) If the Specific Offer Space Delivery Date is after the eighth (8th) anniversary of the Commencement Date, specify the length of the term of the leasing of the Specific Offer Space that will be available (the “Specific Offer Space Term”). 

54.4 If Tenant wishes to exercise Tenant’s rights set forth in this Article 54 with respect to the Specific
Offer Space, then within five (5) business days of delivery of the Availability Notice to Tenant, Tenant shall deliver irrevocable notice to Landlord (the “First Offer Exercise Notice”) offering to lease the Specific Offer Space on
the terms and conditions as may be specified by Landlord in the Availability Notice. 
 54.5 In the event Tenant fails to give a First Offer
Exercise Notice in response to any Availability Notice, Tenant’s rights under this Article 54 shall terminate with respect to that Availability Notice and Landlord shall be free to lease that Specific Offer Space to anyone on any terms at any
time during the Term, without any obligation to provide Tenant with any further right to lease that space; provided, however, that (A) if the net present value of the economic terms of Landlord’s proposed lease to such third party are more
than ten percent (10%) more favorable to the third party (determined using an eight percent (8%) discount rate) than the net present value of the economic terms proposed by Landlord in the Availability Notice (determined using an eight percent (8%)
discount rate), then before entering into such third party lease Landlord shall notify Tenant of such materially more favorable economic terms and Tenant shall have the right to lease the Specific Offer Space upon such materially more favorable
economic terms by delivering written notice thereof to Landlord within five (5) business days after Tenant’s receipt of Landlord’s notice; and (B) if Landlord does not enter into a lease or leases pertaining to the entire
Specific Offer Space identified by Landlord in such Availability Notice within twelve (12) months after the date Landlord first delivered such Availability Notice to Tenant, then Landlord shall submit to Tenant a new Availability Notice with
respect to the unleased portion of such Specific Offer Space that is Available prior to the first time after such 12-month period that Landlord intends to submit to a third party, in which event the foregoing
procedures shall again apply following Tenant’s receipt of such new Availability Notice. Tenant’s right of first offer shall be continuous during the Term of this Lease and any extension thereof. Tenant’s rejection of any particular
offer shall not relieve Landlord of its obligation to again offer any Offer Space to Tenant at any time that the Offer Space subsequently becomes Available after expiration of the 12-month period provided for
this Section 54.5, if applicable. 
 54.6 If Tenant timely and validly gives the First Offer Exercise Notice, then beginning on the
Specific Offer Space Delivery Date and continuing (i) if the Specific Offer Space Delivery Date is on or before the eighth (8th) anniversary of the Commencement Date, for the balance of
the Term (including any extensions), or (ii) if the Specific Offer Space Delivery Date is after the eighth (8th) anniversary of the Commencement Date, for the Specific Offer Space Term:


  
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 (a) The Specific Offer Space shall be part of the Premises under this Lease (so
that the term “Premises” in this Lease shall refer to the space in the Premises immediately before the Specific Offer Space Delivery Date plus the Specific Offer Space); 

(b) Tenant’s Building Percentage and Tenant’s Common Area Building Percentage shall be adjusted to reflect the
increased rentable area of the Premises; 
 (c) Base Rent for the Specific Offer Space shall be as specified in the
Availability Notice; 
 (d) The security deposit Tenant must provide shall be increased by the amounts specified in the
Availability Notice; 
 (e) Tenant’s lease of the Specific Offer Space shall be on the same terms and conditions as
affect the original Premises from time to time, except as otherwise provided in this section. Tenant’s obligation to pay Rent with respect to the Specific Offer Space shall begin on the later of the Specific Offer Space Delivery Date and the
date Landlord actually delivers the Specific Offer Space in the condition required under this Lease. The Specific Offer Space shall be leased to Tenant in its “as-is” condition and Landlord shall not
be required to construct improvements in, or contribute any tenant improvement allowance for, the Specific Offer Space except as set forth in the Availability Notice. Tenant’s construction of any improvements in the Specific Offer Space shall
comply with the terms of this Lease concerning alterations; and 
 (f) If requested by Landlord, Landlord and Tenant shall
confirm in writing the addition of the Specific Offer Space to the Premises on the terms and conditions set forth in this section, but Tenant’s failure to execute or deliver such written confirmation shall not affect the enforceability of the
First Offer Exercise Notice. 
 54.7 Tenant’s rights and Landlord’s obligations under this Article 54
are expressly subject to and conditioned upon there not existing an Event of Default by Tenant under this Lease, either at the time of delivery of the First Offer Exercise Notice or at the time the Specific Offer Space is to be added to the
Premises. 
 54.8 It is understood and agreed that Tenant’s rights under this Article 54 are personal to
Tenant and any Permitted Transferee who is an assignee of Tenant’s entire interest in this Lease and not transferable. In the event of any assignment of this Lease or subletting of all of the Premises or more than twenty-five percent (25%)
thereof (other than to a Permitted Transferee), this expansion right shall automatically terminate and shall thereafter be null and void. 

  
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 ARTICLE 55. 

TENANT’S ROOFTOP RIGHTS 

55.1 Right to Install and Maintain Rooftop Equipment. During the Term and subject to the terms of this
Article 55, Tenant may install on the roof of the Building telecommunications antennae, microwave dishes or other communication equipment, as necessary for the operation of Tenant’s business within the Premises,
including any cabling or wiring necessary to connect this rooftop equipment to the Premises (collectively, the “Rooftop Equipment”). If Tenant wishes to install any Rooftop Equipment, Tenant shall first notify Landlord in writing, which
notice shall fully describe the Rooftop Equipment, including, without limitation, its purpose, weight, size and desired location on the roof of the Building and its intended method of connection to the Premises. All of Tenant’s Rooftop
Equipment must be located within a total aggregate area not to exceed 4 square feet, at locations reasonably approved by Landlord prior to any installation. Landlord hereby consents to the installation of Rooftop Equipment consisting of one
(1) antennae and/or satellite dishes (the “Initial Rooftop Equipment”). Landlord also reserves the right to restrict the number and size of dishes, antennae and other Rooftop Equipment in addition to the Initial Rooftop Equipment
installed on the roof of the Building in its sole discretion. 
 55.2 Additional Charges for Rooftop Equipment. Tenant will be solely
responsible, at Tenant’s sole expense, for the installation, maintenance, repair and removal of the Rooftop Equipment, and Tenant shall at all times maintain the Rooftop Equipment in good condition and repair. Landlord agrees that the Tenant
hereunder shall not pay any rental charge for Tenant’s use of the rooftop pursuant to the terms of this Article 55 for the Initial Rooftop Equipment, provided, however, if Tenant seeks to use rooftop space for Rooftop
Equipment in addition to the Initial Rooftop Equipment, Landlord reserves the right to impose a charge for such use, which shall be consistent with market rates. 

55.3 Conditions of Installation. The installation of the Rooftop Equipment shall constitute an alteration and shall be performed in
accordance with and subject to the provisions of Article 15 of this Lease. Tenant shall comply with all applicable laws, rules and regulations relating to the installation, maintenance and operation of Rooftop Equipment at
the Building (including, without limitation, all construction rules and regulations) and will pay all costs and expenses relating to such Rooftop Equipment, including the cost of obtaining and maintaining any necessary permits or approvals for the
installation, operation and maintenance thereof in compliance with applicable laws, rules and regulations. The installation, operation and maintenance of the Rooftop Equipment at the Building shall not adversely affect the structure or operating
systems of the Building or the business operations of any other tenant or occupant at the Building. All of the provisions of this Lease respecting Tenant’s obligations hereunder shall apply to the installation, use and maintenance of the
Rooftop Equipment, including without limitation provisions relating to compliance with requirements as to insurance, indemnity, repairs and maintenance. Tenant may install cabling and wiring through the Building interior conduits, risers, and
pathways of the Building in accordance with Article 52 in order to connect Rooftop Equipment with the Premises. 

  
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 55.4 Non-Exclusive Right. Tenant’s right to
install and maintain Rooftop Equipment is non-exclusive and is subject to termination or revocation as set forth herein, including pursuant to Section 22.2(b) of this Lease. Landlord
shall be entitled to all revenue from use of the roof other than revenue from the Rooftop Equipment installed by Tenant. Subject to the terms set forth below in this Section 55.4, Landlord at its election may require the
relocation, reconfiguration or removal of the Rooftop Equipment, if in Landlord’s reasonable judgment the Rooftop Equipment is interfering with the use of the rooftop for Building operations (including without limitation maintenance, repairs
and replacements of the roof) or the business operations of other tenants or occupants of the Building, causing damage to the Building or if Tenant otherwise fails to comply with the terms of this Article 55. If relocation
or reconfiguration becomes necessary due to the interference difficulties set forth above, Landlord and Tenant will reasonably cooperate in good faith to agree upon an alternative location or configuration that will permit the operation of the
Rooftop Equipment for Tenant’s business at the Premises without interfering with other operations at the Building or communications uses of other tenants or occupants. If removal is required due to any breach or default by Tenant under the
terms of this Article 55, Tenant shall remove the Rooftop Equipment upon thirty (30) days’ written notice from Landlord. Any relocation, removal or reconfiguration of the Rooftop Equipment as provided above shall
be at Tenant’s sole cost and expense. In addition to the other rights of relocation and removal as set forth herein, Landlord reserves the right to require relocation of Tenant’s Rooftop Equipment at any time at its election at
Landlord’s cost (but not more frequently than once during the Term) so long as Tenant is able to continue operating its Rooftop Equipment in substantially the same manner as it was operated prior to its relocation. In connection with any
relocation of Tenant’s Rooftop Equipment at the request of or required by Landlord (other than in the case of a default by Tenant hereunder), Landlord shall provide Tenant with at least thirty (30) days’ prior written notice of the
required relocation and will conduct the relocation in a commercially reasonable manner and in such a way that will, to the extent reasonably possible, prevent interference with the normal operation of Tenant’s Rooftop Equipment. In connection
with any relocation, Landlord further agrees to work with Tenant in good faith to relocate Tenant’s Rooftop Equipment to a location that will permit its normal operation for Tenant’s business operations. Landlord acknowledges that
relocation of Tenant’s Rooftop Equipment may be disruptive to Tenant’s business and, without limiting its rights to require such removal, confirms that it will not exercise its rights hereunder in a bad faith manner or for the purpose of
harassing or causing a hardship to Tenant. 
 55.5 Costs and Expenses. If Tenant fails to comply with the terms of this
Article 55 within thirty (30) days following written notice by Landlord (or such longer period as may be reasonably required to comply so long as Tenant is diligently attempting to comply), Landlord may take such
action as may be necessary to comply with these requirements. In such event, Tenant agrees to reimburse Landlord for all costs incurred by Landlord to effect any such maintenance, removal or other compliance subject to the terms of this
Article 55, including interest on all such amounts incurred at the Agreed Rate, accruing from the date which is ten (10) days after the date of Landlord’s demand until the date paid in full by Tenant, with all
such amounts being Additional Rent under this Lease. 
 55.6 Indemnification; Removal. Tenant agrees to indemnify Landlord, its
partners, agents, officers, directors, employees and representatives from and against any and all liability, expense, loss or damage of any kind or nature from any suits, claims or demands, including reasonable attorneys’ fees, arising out of
Tenant’s installation, operation, maintenance, repair, relocation or removal of the Rooftop Equipment, except to the extent any such liability, 

  
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expense, loss or damage results from the negligence or intentional misconduct of Landlord or its agents, partners, officers, directors, employees, contractors or representatives or
Landlord’s violation of this Lease. At the expiration or earlier termination of the Lease, Tenant may and, upon request by Landlord, shall remove all of the Rooftop Equipment, including any wiring or cabling relating thereto, at Tenant’s
sole cost and expense and will repair at Tenant’s cost any damage resulting from such removal. If Landlord does not require such removal, any Rooftop Equipment remaining at the Building after the expiration or earlier termination of this Lease
which is not removed by Tenant shall be deemed abandoned and shall become the property of Landlord. 
 55.7 Roof Access; Rules and
Regulations. Subject to compliance with the construction rules for the Building and Landlord’s reasonable and nondiscriminatory rules and regulations regarding access to the roof and, upon receipt of Landlord’s prior written consent to
such activity (which shall not be unreasonably withheld, conditioned or delayed), Tenant and its representatives shall have access to and the right to go upon the roof of the Building, on a seven (7) day per week, twenty-four (24) hour
basis, to exercise its rights and perform its obligations under this Article 55. Tenant acknowledges that, except in the case of an emergency or when a Building engineer is not made available to Tenant in sufficient time to
allow Tenant to avoid or minimize interruption of use of the Rooftop Equipment, advance notice is required and a Building engineer must accompany all persons gaining access to the rooftop. Tenant may install Rooftop Equipment at the Building only in
connection with its business operations at the Premises, and may not lease or license any rights or equipment to third parties or allow the use of any rooftop equipment by any party other than Tenant. Tenant acknowledges that Landlord has made no
representation or warranty as to Tenant’s ability to operate Rooftop Equipment at the Building and Tenant acknowledges that other equipment installations and other structures and activities at or around the Building may result in interference
with Tenant’s Rooftop Equipment. Except as set forth in this Article 55, Landlord shall have no obligation to prevent, minimize or in any way limit or control any existing or future interference with Tenant’s
Rooftop Equipment. 
 ARTICLE 56. 

GENERATOR 
 56.1 Subject to the
terms and conditions set forth below, Tenant shall have the right to install in such location adjacent to the Building as Landlord and Tenant shall reasonably and mutually agree, at Tenant’s sole expense, one
back-up generator and related fuel storage, cabling and equipment (collectively, a “UPS”) to provide uninterrupted power to certain equipment in the Premises, provided that the UPS (i) does not
adversely affect the safety of the Building or any warranty relating to the Building or adversely affect in any material respect any structural component of the Building, (ii) does not adversely affect any electrical, mechanical or any other
system of the Building or the functioning thereof; (iii) does not interfere with the operation of the Building or the provision of services or utilities to the Building; (iv) complies with all Applicable Laws, and (v) is otherwise
approved by Landlord in writing (which approval shall not be unreasonably, withheld, conditioned or delayed), including approval by Landlord of the exact location, type, style, dimensions, weight, plans and installation procedures for the UPS and
the characteristics and type of fuel powering such UPS. Prior to the installation of the UPS by Tenant: (i) Tenant shall obtain Landlord’s approval of the contractor which shall undertake such installation; (ii) Tenant shall obtain
all permits and governmental approvals required for the 

  
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installation of the UPS; (iii) Tenant and the contractor approved by Landlord to undertake such installation shall obtain such insurance coverages as Landlord may reasonably require and, if
requested by Landlord, cause Landlord to be named as an insured under such insurance policies; and (iv) Tenant shall submit to Landlord for approval in its reasonable discretion, plans for the installation of the UPS, prepared by qualified
engineers, showing all aesthetic, structural, mechanical and electrical details of the UPS, as well as all associated conduit and related equipment, all in accordance with all Applicable Laws, including without limitation all Environmental
Requirements. Tenant shall ensure that the UPS does not interfere with any other equipment serving the Building or any portion thereof. At Tenant’s sole cost, the UPS shall be fully screened from view and sound in a manner directed by Landlord
which may include without limitation the installation of an additional screening wall and sound baffling. Throughout the Term, Tenant shall (A) ensure that the UPS complies with all Applicable Laws, including any Environmental Requirements;
(B) cause engineers, including environmental engineers, acceptable to Landlord to inspect the UPS at least twice yearly to insure that such equipment is functioning properly and that no Hazardous Materials are emanating therefrom;
(C) maintain the UPS in good order and repair; (D) maintain insurance coverages with respect thereto as are required by Landlord from time to time; and (E) maintain all permits and governmental approvals necessary for the operation of
the UPS. Tenant shall immediately report to Landlord if Tenant determines that the UPS is not functioning properly, is leaking or is in violation of any Applicable Laws. At the end of the Term, if requested by Landlord, Tenant, at Tenant’s sole
cost and expense, shall remove the UPS and restore the area in which it was located to its condition immediately prior to the installation of the UPS. Tenant shall obtain at Tenant’s expense all permits and governmental approvals necessary for
such removal. 
 ARTICLE 57. 

LETTER OF CREDIT 
 57.1 Letter
of Credit. Tenant may elect to provide, at Tenant’s sole cost and expense, a Letter of Credit (as defined below) in the Letter of Credit Required Amount (as defined below) as additional security for the faithful performance and observance
by Tenant of all of the provisions of the Lease, on the terms and conditions set forth below. Tenant’s election to provide the Letter of Credit must be made by delivering to Landlord the Letter of Credit upon Tenant’s execution and
delivery of this Lease (the “Letter of Credit Election”). The use, application or retention of the Letter of Credit, or any portion thereof, by Landlord shall not prevent Landlord from exercising any other right or remedy provided by the
Lease or by law, it being intended that Landlord shall not first be required to proceed against the Letter of Credit and the Letter of Credit shall not operate as a limitation on any recovery to which Landlord may otherwise be entitled. As used
herein the term “Letter of Credit Required Amount” initially means $802,449.54. Subject to the remaining terms of this Article 57, and provided the Reduction Conditions (as defined in Section 4.3) have been
satisfied at the particular reduction effective date, Tenant shall have the right to reduce the Letter of Credit Required Amount so that the new Letter of Credit Required Amount shall be $401,224.77 effective as of the first day of the later of the
forty-sixth (401) month of the Term or the month following the date Tenant meets the Reduction Conditions. If Tenant is entitled to a reduction in the Letter of Credit Required Amount, Tenant shall provide Landlord with written notice
requesting that the Letter of Credit Required Amount be reduced as provided above (the “Letter of Credit Reduction Notice”). If Tenant provides Landlord with a Letter of Credit Reduction Notice, and Tenant is entitled to


  
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reduce the Letter of Credit Required Amount as provided herein, the reduction shall be effectuated by Tenant replacing the Letter of Credit then being held by Landlord with a new Letter of Credit
in the new Letter of Credit Required Amount or amending the then-existing Letter of Credit to that new Letter of Credit Required Amount. 

57.2 Delivery of Letter of Credit. If Tenant makes the Letter of Credit Election, (a) Tenant shall cause a Letter of Credit, in
the amount of the Letter of Credit Required Amount to be issued by the L/C Bank (as defined below) in favor of Landlord, and its successors, assigns and transferees; (b) Tenant will cause the Letter of Credit to remain in full force and effect
during the entire Term and thereafter until sixty (60) days after expiration or earlier termination of the Lease; and (c) the initial Letter of Credit will be delivered to Landlord upon the execution and delivery of this Lease by Tenant.
So long as no event of default then exists, Landlord shall return the Letter of Credit to Tenant within sixty (60) days after the Expiration Date. The specific requirements for the Letter of Credit and the rights of Landlord to make draws
thereon will be as set forth in this Article 57. If Tenant makes the Letter of Credit Election, all of Tenant’s rights and all of Landlord’s obligations under this Lease are strictly contingent on Tenant’s delivering and
thereafter causing the Letter of Credit to remain in full force and effect during the entire Term. 
 57.3 Draws on the Letter of
Credit. Immediately upon, and at any time or from time to time after, the occurrence of any one or more Draw Events (as defined below), Landlord will have the unconditional right to draw on the Letter of Credit in accordance with this Article
57. Upon the payment to Landlord of the Draw Proceeds, Landlord will hold the Draw Proceeds in its own name and for its own account, without liability for interest, to use and apply any and all of the Draw Proceeds only (a) to cure any
Event of Default by Tenant; (b) to pay any other sum to which Landlord becomes obligated by reason of Tenant’s failure to carry out its obligations under this Lease; or (c) to compensate Landlord for any monetary loss or damage which
Landlord suffers thereby arising from Tenant’s failure to carry out its obligations under this Lease. In addition, if the Draw Event is the failure of Tenant to renew the Letter of Credit as required hereunder, then Landlord shall be entitled
to draw the entire Letter of Credit as a cash security deposit, held as a pledge under the California Uniform Commercial Code to secure Tenant’s obligations under this Lease. Among other things, it is expressly understood that the Draw Proceeds
will not be considered an advance payment of Base Rent or Additional Rent or a measure of Landlord’s damages resulting from any Event of Default hereunder (past, present or future). Further, immediately upon the occurrence and during the
continuance of any one or more Draw Events, Landlord may, from time to time and without prejudice to any other remedy, use the Draw Proceeds (whether from a contemporaneous or prior draw on the Letter of Credit) to the extent necessary to make good
any arrearages of Base Rent or Additional Rent, to pay to Landlord any and all amounts to which Landlord is entitled in connection with the pursuit of any one or more of its remedies hereunder, and to compensate Landlord for any and all other
damage, injury, expense or liability caused to Landlord by any and all such Events of Default. Any delays in Landlord’s draw on the Letter of Credit or in Landlord’s use of the Draw Proceeds as provided in this Article 57 will not
constitute a waiver by Landlord of any of its rights hereunder with respect to the Letter of Credit or the Draw Proceeds. Following any such application of the Draw Proceeds, Tenant will either pay to Landlord on demand the cash amount so applied in
order to restore the Draw Proceeds to the full amount thereof immediately prior to such application or cause the Letter of Credit to be replenished to its full amount thereunder. 

  
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Failure to either pay that cash amount or cause the Letter of Credit to be replenished to its full amount thereunder within three (3) days after that application of the Draw Proceeds shall
constitute an Event of Default without the right to any notice or cure period. Landlord will not be liable for any indirect, consequential, special or punitive damages incurred by Tenant arising from a claim that Landlord violated the bankruptcy
code’s automatic stay in connection with any draw by Landlord of any Draw Proceeds, Landlord’s liability (if any) under such circumstances being limited to the reimbursement of direct costs as and to the extent expressly provided in this
Section 57.3. Nothing in this Lease or in the Letter of Credit will confer upon Tenant any property rights or interests in any Draw Proceeds; provided, however, that upon the expiration or earlier termination of this Lease,
and so long as there then exist no Draw Events or Events of Default hereunder, Landlord agrees to return of any remaining unapplied balance of the Draw Proceeds then held by Landlord to Tenant, and the Letter of Credit itself (if and to the extent
not previously drawn in full) to the L/C Bank. Landlord may draw on the Letter of Credit and/or apply any Security Deposit in any order. 

57.4 Applicable Definitions. 

Draw Event means each of the following events: 

(a) the occurrence of any one or more of the following which shall have also been preceded, simultaneously accompanied, or
succeeded by an Event of Default under this Lease regardless of the absence of any notice of default which might otherwise be required with respect to an Event of Default if the giving of notice to Tenant about such breach by Tenant is stayed or
barred due to one of the following events: (i) Tenant’s filing of a petition under any chapter of the Bankruptcy Code, or under any federal, state or foreign bankruptcy or insolvency statute now existing or hereafter enacted, or
Tenant’s making a general assignment or general arrangement for the benefit of creditors, (ii) the filing of an involuntary petition under any chapter of the Bankruptcy Code, or under any federal, state or foreign bankruptcy or insolvency
statute now existing or hereafter enacted, or the filing of a petition for adjudication of bankruptcy or for reorganization or rearrangement, by or against Tenant and such filing not being dismissed within sixty (60) days, (iii) the entry of an
order for relief under any chapter of the Bankruptcy Code, or under any federal, state or foreign bankruptcy or insolvency statute now existing or hereafter enacted, (iv) the appointment of a custodian, as such term is defined in the Bankruptcy
Code (or of an equivalent thereto under any federal, state or foreign bankruptcy or insolvency statute now existing or hereafter enacted), for Tenant, or the appointment of a trustee or receiver to take possession of substantially all of
Tenant’s assets located at the Premises or of Tenant’s interest in this Lease and possession not being restored to Tenant within sixty (60) days, or (v) the subjection of all or substantially all of Tenant’s assets located
at the Premises or of Tenant’s interest in this Lease to attachment, execution or other judicial seizure and such subjection not being discharged within sixty (60) days; 

(b) the failure of Tenant, not less than thirty (30) days prior to the stated expiration date of the Letter of Credit then
in effect, to cause an extension, renewal or replacement issuance of the Letter of Credit, to be effected, which extension, renewal or replacement issuance will be made by the L/C Bank, will otherwise meet all of the requirements of the initial
Letter of Credit hereunder, which failure will be an Event of Default under this Lease; 

  
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 (c) the failure of Tenant to make when due any payment of Base Rent, of any
monthly installment of any Additional Rent, or pay any other monetary obligation within five (5) days after the amount is due. 

(d) the payment by Landlord of any sum to cure a failure by Tenant to comply with any
non-monetary obligation hereunder which Tenant has not cured within thirty (30) days after notice thereof by Landlord (or, if Landlord is prevented from giving notice by application of the bankruptcy
code’s automatic stay, the payment of Landlord of any sum to cure a failure by Tenant to comply with any non-monetary obligation hereunder that Tenant has not cured within thirty (30) days from the
date of the breach). 
 Draw Proceeds means the proceeds of any draw or draws made by Landlord under the Letter of Credit, together with any
and all interest accruing thereon. 
 L/C Bank means any United States bank which is approved by Landlord in Landlord’s sole
discretion. Landlord hereby approves of Silicon Valley Bank as the L/C Bank. 
 Letter of Credit means that certain one-year irrevocable letter of credit, in the Letter of Credit Required Amount, issued by the L/C Bank, as required under Section 57.2 and, if applicable, as extended, renewed, replaced or modified from time to
time in accordance with this Lease, which letter of credit will be transferable and in substantially the same form as attached Exhibit J. 

57.5 Transfer of Letter of Credit. The Letter of Credit shall not be mortgaged, assigned or encumbered in any manner whatsoever by
Tenant. Tenant acknowledges that Landlord has the right to transfer or mortgage its interest in the Premises and the Building and in this Lease and Tenant agrees that in the event of any such transfer or mortgage, Landlord shall have the right to
transfer or assign the Letter of Credit and/or the Draw Proceeds to the transferee or mortgagee, and in such event, Tenant shall look solely to such transferee or mortgagee for return of the Letter of Credit and/or the Draw Proceeds so transferred.
Tenant shall pay all fees and charges of the L/C Bank with respect to any transfer of the Letter of Credit. Tenant shall, within five (5) days of request by Landlord, execute such further instruments or assurances as Landlord may reasonably
deem necessary to evidence or confirm Landlord’s transfer or assignment of the Letter of Credit and/or the Draw Proceeds to such transferee or mortgagee. 

57.6 Letter of Credit is Not Security Deposit. Landlord and Tenant acknowledge and agree that in no event or circumstance shall the
Letter of Credit, any renewal thereof or substitute therefor or the proceeds thereof be (i) deemed to be or treated as a security deposit within the meaning of California Civil Code Section 1950.7, (ii) subject to the terms of such
Section 1950.7, or (iii) intended to serve as a security deposit within the meaning of such Section 1950.7. The parties hereto (A) recite that the Letter of Credit is not intended to serve as a security deposit and such
Section 1950.7 and any and all other laws, rules and regulations applicable to security deposits in the commercial context (Security Deposit Laws) shall have no applicability or relevancy thereto and (B) waive any and all rights, duties
and obligations either 

  
 -74- 








 
party may now or, in the future, will have relating to or arising from the Security Deposit Laws. Notwithstanding the foregoing, to the extent California Civil Code 1950.7 in any way: (a) is
determined to be applicable to this Lease or the Letter of Credit (or any proceeds thereof); or (b) controls Landlord’s rights to draw on the Letter of Credit or apply the proceeds of the Letter of Credit to any amounts due under this
Lease or any damages Landlord may suffer following termination of this Lease, then Tenant fully and irrevocably waives the benefits and protections of Section 1950.7 of the California Civil Code, it being agreed that Landlord may recover from
the Letter of Credit (or its proceeds) all of Landlord’s damages under this Lease and California law including, but not limited to, any damages accruing upon the termination of this Lease in accordance with this Lease and Section 1951.2 of
the California Civil Code. 
 57.7 Substitute Letter of Credit. In the event the L/C Bank is declared insolvent by the FDIC or is closed for
any reason, Tenant shall immediately provide a substitute Letter of Credit meeting the requirements of this Article 57 from another United States bank which is approved by Landlord in Landlord’s sole discretion. 

ARTICLE 58. 
 REASONABLE APPROVALS

 58.1 Whenever this Lease grants Landlord or Tenant a right to take action, exercise discretion, or make an allocation, judgment or other
determination (collectively, an “Act”), Landlord or Tenant shall act reasonably and in good faith (meaning that no action shall be taken which would materially contravene the reasonable expectations of a sophisticated landlord operating a
first-class office building and a sophisticated tenant in a first-class office building concerning the benefits and rights granted under this Lease but not contravening the plain and clear intent of the specific language of this Lease governing the
specific issue in question), and shall not take any action which might result in the frustration of the reasonable expectations of a sophisticated landlord and a sophisticated tenant concerning the benefits to be enjoyed under this Lease, provided,
however, that: 
 (a) Wherever this Lease elsewhere provides another standard which specifically defines or limits
Landlord’s or Tenant’s discretion with respect to any Act, such other standard and not this Article 58 shall then control as to such Act; 

(b) Nothing in this Article 58 shall require Landlord to consent to (i) any use of the Premises for purposes other
than those permitted in Article 3, (ii) any alterations which would adversely affect the Building systems, any other Building occupant, or exterior of the Building, or (iii) any proposed assignment of or subletting under this Lease to
which Landlord is not otherwise required to consent under Article 18; 
 (c) Except for an obligation to act in good
faith, this Article 58 shall not apply to an election by Landlord or Tenant to terminate the Lease under Article 19 or Article 20 (but only if Landlord or Tenant (as applicable) strictly complies with the parameters for
termination set forth in those Articles); 
 (d) This Article 58 shall not apply to an act taken by Landlord pursuant
to Article 22 of the Lease; and 

  
 -75- 








 (e) Nothing contained in this Article 58 shall be deemed to limit the
discretion of Landlord or Tenant with respect to any matter (including, without limitation, a proposal to amend or otherwise modify the Lease) which is not otherwise within the contemplation of the Lease. 

  
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 IN WITNESS WHEREOF, Landlord and Tenant, acting herein through duly authorized individuals, have
caused these presents to be executed as of the date first above written. 
  

			
	TENANT:
	
	ALLAKOS INC., a Delaware corporation
		
	By:	 	/s/ Adam Tomasi
		
		 	Adam Tomasi, CFO
		 	[Printed Name and Title]
		
	By:	 	 
		
		 	 
		 	[Printed Name and Title]
	
	If Tenant is a corporation, this instrument must be executed by the chairman of the board, the president or any vice president and the secretary, any assistant secretary, the chief financial officer or any assistant
financial officer or any assistant treasurer of such corporation, unless the bylaws or a resolution of the board of directors shall otherwise provide, in which case the bylaws or a certified copy of the resolution, as the case may be, must be
attached to this instrument.
	
	Tenant’s NAICS Code:                            



  
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	LANDLORD:
	
	 WESTPORT OFFICE PARK, LLC,
 a
California limited liability company

		
	By:	 	 THE PRUDENTIAL INSURANCE COMPANY OF AMERICA, a New Jersey corporation, acting solely on behalf of and for
the benefit of, and with its liability limited to the assets of, its insurance company separate account, PRISA II, its member

			
		 	 By:
	 	/s/ Jeffrey D. Mills
			
		 		 	Jeffrey D. Mills, Vice President
		 		 	[Printed Name and Title]



  
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 EXHIBIT A 

THE PROJECT 
  





 

  
 Exhibit A 








 EXHIBIT B 

PREMISES 
 (See Attached)


  
 Exhibit B 








 



 

  
 Exhibit B 








 EXHIBIT C 

TENANT WORK LETTER 
 This
Tenant Work Letter (“Tenant Work Letter”) sets forth the terms and conditions relating to the construction of improvements for the Premises. All references in this Tenant Work Letter to “the Lease” shall mean the relevant
portions of the Lease to which this Tenant Work Letter is attached as Exhibit C. 
 Section 1 

BASE, SHELL AND CORE 
 1.1
Landlord has previously constructed the base, shell, and core (i) of the Premises and (ii) of the floor(s) of the Building on which the Premises are located (collectively, the “Base, Shell, and Core”), and Tenant shall accept the
Base, Shell and Core in its current “As-Is” condition existing as of the date of the Lease and the Commencement Date. Landlord shall install in the Premises certain “Tenant Improvements”
(as defined below) pursuant to the provisions of this Tenant Work Letter. Except for the Tenant Improvement work described in this Tenant Work Letter and except for the Allowance set forth below and as otherwise expressly set forth in the Lease,
Landlord shall not be obligated to make or pay for any alterations or improvements to the Premises, the Building or the Project. Notwithstanding anything to the contrary contained herein, Landlord covenants to correct, at its sole cost and not as an
Operating Expense payable by Tenant, any failure of the exterior path of travel for the Premises to comply with current codes, including without limitation the Americans with Disabilities Act, as interpreted by Landlord’s architect as of the
date of the Lease, to the extent such correction is necessary in order to obtain a building permit or a certificate of occupancy for the Tenant Improvements in the Premises for the Tenant Improvements; provided that nothing contained herein shall be
deemed to prohibit Landlord from obtaining a variance or relying upon a grandfathered right in order to achieve compliance with those codes. Notwithstanding the foregoing, Landlord shall have the right to contest any alleged violation in good faith,
including, without limitation, the right to apply for and obtain a waiver or deferment of compliance, the right to assert any and all defenses allowed by law, and the right to appeal any decisions, judgments or rulings to the fullest extent
permitted by law, and Landlord’s obligation to perform work or take such other action to cure a violation under this Section shall apply after the exhaustion of any and all rights to appeal or contest. 

Section 2 

CONSTRUCTION DRAWINGS FOR THE PREMISES 

2.1 Prior to the full execution and delivery of this Lease, Landlord and Tenant have approved a detailed space plan for the construction of
certain improvements in the Premises, a copy of which space plan is attached hereto as Exhibit C-1 (the “Final Space Plan”). Based upon and in conformity with the Final Space Plan, Landlord shall
cause its architect and engineers to prepare and deliver to Tenant, for Tenant’s approval, detailed specifications and engineered 

  
 Exhibit C 

-1- 








 
working drawings for the tenant improvements shown on the Final Space Plan (the “Working Drawings”). The Working Drawings shall incorporate modifications to the Final Space Plan as
necessary to comply with the floor load and other structural and system requirements of the Building. To the extent that the finishes and specifications are not completely set forth in the Final Space Plan for any portion of the tenant improvements
depicted thereon, the actual specifications and finish work shall be in accordance with the specifications for the Building’s standard tenant improvement items, as determined by Landlord. Within three (3) business days after Tenant’s
receipt of the Working Drawings, Tenant shall approve or disapprove the same, which approval shall not be unreasonably withheld; provided, however, that Tenant may only disapprove the Working Drawings to the extent such Working Drawings are
inconsistent with the Final Space Plan and only if Tenant delivers to Landlord, within such three (3) business days period, specific changes proposed by Tenant which are consistent with the Final Space Plan and do not constitute changes which
would result in any of the circumstances described in items (i) through (iv) below. If any such revisions are timely and properly proposed by Tenant, Landlord shall cause its architect and engineers to revise the Working Drawings to
incorporate such revisions and submit the same for Tenant’s approval in accordance with the foregoing provisions, and the parties shall follow the foregoing procedures for approving the Working Drawings until the same are finally approved by
Landlord and Tenant. Upon Landlord’s and Tenant’s approval of the Working Drawings, the same shall be known as the “Approved Working Drawings.” The tenant improvements shown on the Approved Working Drawings shall be referred to
herein as the “Tenant Improvements.” Once the Approved Working Drawings have been approved by Landlord and Tenant, Landlord and Tenant shall make no changes, change orders or modifications thereto without the prior written consent of the
other party (which consent shall not be unreasonably withheld, conditioned, or delayed), but which consent may be withheld in Landlord’s sole discretion if such change or modification would: (i) directly or indirectly delay the Substantial
Completion of the Premises unless Tenant agrees it would be a Tenant Delay; (ii) increase the cost of designing or constructing the Tenant Improvements above the cost of the tenant improvements depicted in the Final Space Plan unless Tenant
agrees to pay for such increase; (iii) be of a quality lower than the quality of the standard tenant improvement items for the Building; and/or (iv) require any changes to the Base, Shell and Core or structural improvements or systems of
the Building. The Final Space Plan, Working Drawings and Approved Working Drawings shall be collectively referred to herein as, the “Construction Drawings.” 

Section 3 

CONSTRUCTION AND PAYMENT FOR 
 COSTS
OF TENANT IMPROVEMENTS 
 3.1 Landlord shall cause the following contractors to bid for the construction of the Tenant Improvements: WCI,
Skyline and Landmark. Following the bidding process, Tenant, in its sole discretion, shall select a general contractor from those that participated in the bidding process and shall approve such contractor’s estimate of the total cost of the
Tenant Improvements (the “Cost Estimate”). Following such approval, Landlord shall cause such general contractor selected by Tenant (the “Contractor”) to (i) obtain all applicable building permits for construction of the
Tenant Improvements, and (ii) construct the Tenant Improvements as depicted on the 

  
 Exhibit C 

-2- 








 
Approved Working Drawings, in compliance with such building permits and all applicable laws in effect at the time of construction, and in good workmanlike manner using new materials and equipment
of good quality. Landlord shall pay for the cost of the design and construction of the Tenant Improvements in an amount up to, but not exceeding, $55.00 per rentable square foot of the Premises (i.e., up to $1,385,670.00, based on
25,194 rentable square feet of the Premises (the “Allowance”). The cost of the design and construction of the Tenant Improvements shall include Landlord’s construction supervision and management fee in an amount equal to the
product of (i) three percent (3%) and (ii) the amount equal to the sum of the Allowance and the Over-Allowance Amount (as such term is defined below). Tenant shall pay for all costs in excess of the Allowance
(“Over-Allowance Amount”), which payment shall be made to Landlord in cash within ten (10) days after Tenant’s receipt of invoice therefor from Landlord and, in any event, prior to the date
Landlord causes the Contractor to commence the actions described in the first sentence of this Section 3. In the event that after Tenant pays the Over-Allowance Amount Tenant requests any changes, change orders or
modifications to the Approved Working Drawings (which Landlord approves pursuant to Section 2 above) which increase the cost to construct the Tenant Improvements in excess of the Allowance, Tenant shall pay such increased
cost to Landlord immediately upon Landlord’s request therefor, and, in any event, prior to the date Landlord causes the Contractor to commence construction of the changes, change orders or modifications. In no event shall Landlord be obligated
to pay for any of Tenant’s furniture, computer systems, telephone systems, equipment or other personal property which may be depicted on the Construction Drawings; such items shall be paid for by Tenant. Tenant shall not be entitled to receive
in cash or as a credit against any rental or otherwise, any portion of the Allowance not used to pay for the cost of the design and construction of the Tenant Improvements. Any required structural fire proofing costs triggered by the Tenant
Improvements shall be paid out of the Allowance. Notwithstanding the foregoing, the cost of the Tenant Improvements to be provided at Landlord’s sole expense shall include (and Tenant shall have no responsibility for and the Allowance shall not
be used for) the following: (a) costs incurred due to the presence of Hazardous Materials in the Premises or the surrounding area, (b) costs due to casualty, (c) costs incurred to bring the Project into compliance with Applicable
Laws, except to the extent required due to Tenant’s proposed particular use of the Premises including without limitation elements of the Tenant Improvements other than general office improvements, or (d) overtime or premium time unless it
is with respect to (i) work normally done outside of business hours due to noise, dust, vibration or odors that would affect occupants of the Building or Project, (ii) work priced as overtime or premium time work as part of the Cost
Estimate, or (iii) overtime or premium time work approved by Tenant. 
 3.2 Tenant’s Percentage. Notwithstanding the
provision of Section 3.1, so long as the Tenant is the initially-named Tenant under this Lease or a Permitted Transferee thereof, Tenant may pay the Over-Allowance Amount in accordance with the following schedule:
(a) an amount equal to 35% of the Over-Allowance Amount (the “Initial Construction Deposit”) shall by delivered to Landlord by the date that is the later of (i) Landlord’s execution of construction contract with the
Contractor, or (ii) the date that is thirty (30) days after the receipt from Landlord of an invoice therefor together with reasonable supporting documentation; and (b) the remaining 65% of the Over-Allowance Amount shall be delivered
to Landlord from time-to-time within ten (10) business days after written request of Landlord (each, a “Funding Request”) in amounts specified by Landlord
in each such Funding Request. Landlord may give multiple Funding Requests. Landlord agrees that the amounts specified in each Funding Request shall be 

  
 Exhibit C 

-3- 








 
Landlord’s good faith estimate of Tenant’s Percentage (as defined below) of the amounts necessary to make payment to third parties for the cost of the Tenant Improvement that have been
incurred or will be incurred within thirty (30) days after the date of the Funding Request. Any failure of Tenant to deliver to Landlord any portion of the Over-Allowance Amount in cash as and when due as provided above that it is not cured
within three (3) business days after written notice from Landlord shall constitute an Event of Default under the Lease. The Initial Construction Deposit shall be applied to Tenant’s Percentage of the cost of the Tenant Improvements first
coming due. For purposes of this Tenant Work Letter, “Tenant’s Percentage” shall be equal one (1) minus the fraction determined by dividing the amount of the Allowance by the estimated budget for the Tenant Improvements. Landlord
may from time to time re-determine the Over-Allowance Amount based on any changes, change orders or modifications to the Approved Working Drawings (which Landlord approves pursuant to Section 2) which
increase the cost to construct the Tenant Improvements and upon that re-determination modify Tenant’s Percentage and adjust the amount of any Funding Request (or make additional Funding Requests) such
that Tenant shall pay the entire Over-Allowance Amount and Tenant’s funding of the Over-Allowance Amount at all times is equal to Tenant’s Percentage of the estimated budget for the Tenant Improvements that has been expended through that
date and that will be paid to third parties for the cost of the Tenant Improvement that have been incurred or will be incurred within thirty (30) days after the date of the most recent Funding Request. 

Section 4 
 SUBSTANTIAL
COMPLETION 
 OF THE TENANT IMPROVEMENTS 

4.1 Substantial Completion. For purposes of this Lease, including for purposes of determining the Commencement Date, “Substantial
Completion” of the Premises shall occur upon the completion of construction of the Tenant Improvements in the Premises pursuant to the Approved Working Drawings, with the exception of any punch list items and any tenant fixtures, work-stations,
built-in furniture, or equipment to be installed by Tenant. 
 4.2 Delay of the Substantial
Completion of the Premises. If there shall be an actual delay or there are actual delays in the Substantial Completion of the Tenant Improvements beyond February 1, 2018 as a direct, indirect, partial, or total result of any of the
following (collectively, “Tenant Delays”): 
 4.2.1 Tenant’s failure to timely approve the Working Drawings or any other
matter requiring Tenant’s approval; 
 4.2.2 a breach by Tenant of the terms of this Tenant Work Letter or the Lease; 

4.2.3 Tenant’s request for changes in any of the Construction Drawings to the extent set forth in an approved written change order
prepared by Landlord and approved by Tenant; 

  
 Exhibit C 

-4- 








 4.2.4 Tenant’s requirement for materials, components, finishes or improvements which are not
available in a commercially reasonable time given the estimated date of Substantial Completion of the Premises, as set forth in the Lease, or which are different from, or not included in, Landlord’s standard tenant improvement items for the
Building. 
 4.2.5 changes to the Base, Shell and Core, structural components or structural components or systems of the Building required
by the Approved Working Drawings; 
 4.2.6 any changes in the Construction Drawings and/or the Tenant Improvements required by applicable
laws if such changes are directly attributable to Tenant’s use of the Premises or Tenant’s specialized tenant improvement(s) (as determined by Landlord); or 

4.2.7 any other acts or omissions of Tenant, or its agents, or employees; 

then, notwithstanding anything to the contrary set forth in the Lease and regardless of the actual date of Substantial Completion, the Commencement Date shall
be deemed to be the date the Commencement Date would have occurred if no Tenant Delays, as set forth above, had occurred. Notwithstanding the foregoing or anything to the contrary herein, for purposes of determining whether the Commencement Date
should be so accelerated with respect to the Tenant Delays described in Sections 4.2.2 or 4.2.7 only, (i) no Tenant Delay as set forth in Sections 4.2.2 or 4.2.7 as applicable, shall be deemed to have occurred unless
and until Landlord has provided notice to Tenant (which may be given by email or verbally to representatives of Tenant) (the “Tenant Delay Notice”) specifying the action or inaction by Tenant which Landlord contends constitutes the Tenant
Delay pursuant to Sections 4.2.2 or 4.2.7 8, as applicable, and (ii) if such action or inaction is not cured by Tenant within one (1) business day of receipt of such Tenant Delay Notice, then a Tenant Delay pursuant to
Sections 4.2.2 or 4.2.7, as applicable, as set forth in such Tenant Delay Notice, shall be deemed to have occurred commencing as of the date the Tenant Delay Notice is given. 

Section 5 

MISCELLANEOUS 
 5.1
Tenant’s Entry Into the Premises Prior to Commencement Date. Subject to the terms hereof and provided that Tenant and its agents do not interfere with Contractor’s work in the Building and the Premises, at Landlord’s reasonable
discretion, Contractor shall allow Tenant access to the Premises thirty (30) days prior to the Commencement Date for the purpose of Tenant installing furniture, phones, data, equipment or fixtures (including Tenant’s data and telephone
equipment) in the Premises and for otherwise preparing the Premises for occupancy. Prior to Tenant’s entry into the Premises as permitted by the terms of this Section 5.1, Tenant shall submit a schedule to Landlord and
Contractor, for their approval, which schedule shall detail the timing and purpose of Tenant’s entry. In connection with any such entry, Tenant acknowledges and agrees that Tenant’s employees, agents, contractors, consultants, workmen,
mechanics, suppliers and invitees shall fully cooperate, work in harmony and not, in any manner, interfere with Landlord or Landlord’s Contractor, agents or representatives in performing work in the Building and the Premises, or interfere with
the general operation of the Building and/or the 

  
 Exhibit C 

-5- 








 
Project. If at any time any such person representing Tenant shall not be cooperative or shall otherwise cause or threaten to cause any such disharmony or interference, including, without
limitation, labor disharmony, and Tenant fails to immediately institute and maintain corrective actions as directed by Landlord, then Landlord may revoke Tenant’s entry rights upon twenty-four (24) hours’ prior written notice to
Tenant. Tenant acknowledges and agrees that any such entry into and occupancy of the Premises or any portion thereof by Tenant or any person or entity working for or on behalf of Tenant shall be deemed to be subject to all of the terms, covenants,
conditions and provisions of the Lease, excluding only the covenant to pay Rent (until the occurrence of the Commencement Date). Tenant further acknowledges and agrees that Landlord shall not be liable for any injury, loss or damage which may occur
to any of Tenant’s work made in or about the Premises in connection with such entry or to any property placed therein prior to the Commencement Date, the same being at Tenant’s sole risk and liability. Tenant shall be liable to Landlord
for any damage to any portion of the Premises, including the Tenant Improvement work, caused by Tenant or any of Tenant’s employees, agents, contractors, consultants, workmen, mechanics, suppliers and invitees, subject to
Section 13.4. In the event that the performance of Tenant’s work in connection with such entry causes extra costs to be incurred by Landlord or requires the use of any Building services, Tenant shall promptly reimburse
Landlord for such extra costs and/or shall pay Landlord for such Building services at Landlord’s standard rates then in effect. In addition, Tenant shall hold Landlord harmless from and indemnify, protect and defend Landlord against any loss or
damage to the Premises or Project and against injury to any persons caused by Tenant’s actions pursuant to this Section 5.1. 

5.2 Tenant’s Representative. Tenant has designated Adam Tomasi as its sole representative with respect to the matters set forth in
this Tenant Work Letter, who shall have full authority and responsibility to act on behalf of the Tenant as required in this Tenant Work Letter. 

5.3 Landlord’s Representative. Landlord has designated Christine Scheerer as its sole representative with respect to the matters
set forth in this Tenant Work Letter, who, until further notice to Tenant, shall have full authority and responsibility to act on behalf of the Landlord as required in this Tenant Work Letter. 

5.4 Time of the Essence in This Tenant Work Letter. Unless otherwise indicated, all references herein to a “number of days”
shall mean and refer to calendar days. If any item requiring approval is timely disapproved by Landlord, the procedure for preparation of the document and approval thereof shall be repeated until the document is approved by Landlord. 

5.5 Tenant’s Lease Default. Notwithstanding any provision to the contrary contained in the Lease, if an Event of Default by Tenant
under the Lease or any default by Tenant under this Work Letter beyond applicable notice and cure periods has occurred at any time on or before the substantial completion of the Premises, then (i) in addition to all other rights and remedies
granted to Landlord pursuant to the Lease, at law and/or in equity, Landlord shall have the right to cause Contractor to cease the construction of the Premises (in which case, Tenant shall be responsible for any delay in the Substantial Completion
of the Premises caused by such work stoppage as set forth in Section 4.2 of this Tenant Work Letter), and (ii) all other obligations of Landlord under the terms of this Tenant Work Letter shall be forgiven until such
time as such default is cured pursuant to the terms of the Lease (in which case, Tenant shall be responsible for any delay in the Substantial Completion of the Premises caused by such inaction by Landlord). 

  
 Exhibit C 

-6- 








 5.6 Space Planning Allowance. Landlord shall provide Tenant a space planning allowance of
up to $0.15 per rentable square foot of the Premises (the “Space Planning Allowance”), which may be used only for the costs to prepare preliminary space plans for the Premises. If Tenant uses its own space planner to prepare the space
plan, Landlord shall pay the Space Planning Allowance to Tenant within thirty (30) days after the later of (a) the full execution and delivery of the Lease and (b) Landlord’s receipt of an invoice from Tenant’s space
planner. If Tenant uses Landlord’s architect for space planning, Landlord will apply the Space Planning Allowance to payment of the fees charged by Landlord’s architect for the space plans. Landlord shall be entitled to copies of all plans
created utilizing the Space Planning Allowance. The Space Planning Allowance shall be paid out of the Allowance. 

  
 Exhibit C 

-7- 








 EXHIBIT C-1 

FINAL SPACE PLAN 
 (See
Attached) 

  
 Exhibit C-1 

-1- 








 



 

  
 Exhibit C-1 

-2- 








 EXHIBIT D 

RULES AND REGULATIONS 

Tenant shall faithfully observe and comply with the following Rules and Regulations: 

1. Except in connection with Tenant’s work (if any) under Exhibit C, Tenant shall not alter any locks or install
any new or additional locks or bolts on any doors or windows of the Premises without obtaining Landlord’s prior written consent. Tenant shall bear the cost of any lock changes or repairs required by Tenant and Tenant shall promptly deliver any
new keys to Landlord. 
 2. All doors opening to public corridors shall be kept closed at all times except for normal ingress and egress to
the Premises. Tenant shall assume any and all responsibility for protecting the Premises from theft, robbery and pilferage, which includes keeping doors locked and other means of entry to the Premises closed. 

3. Tenant, its employees and agents must be sure that the entry doors to the Premises are securely closed and locked when leaving the Premises
if it is after the normal hours of business of the Project. Tenant, its employees, agents or any other persons entering or leaving the Project at any time when it is so locked, or any time when it is considered to be after normal business hours for
the Project, may be required to sign the Project register. Access to the Project may be refused unless the person seeking access has proper identification or has a previously received authorization for access to the Project. Landlord and its agents
shall in no case be liable for damages for any error with regard to the admission to or exclusion from the Project of any person. In case of invasion, mob, riot, public excitement, or other commotion, Landlord reserves the right to prevent access to
the Project during the continuance thereof by any means it deems appropriate for the safety and protection of life and property. 
 4.
Landlord reserves the right, in the event of an emergency in Landlord’s reasonable discretion, to close or limit access to the Project and/or the Premises, from time to time, due to damage to the Project and/or the Premises, to ensure the
safety of persons or property or due to government order or directive, and Tenant agrees to immediately comply with any such reasonable decision by Landlord. If Landlord closes or limits access to the Project and/or the Premises for the reasons
described above, Landlord’s actions shall not constitute a breach of the Lease. 
 5. Tenant shall not disturb, solicit, or canvass any
occupant of the Project and shall cooperate with Landlord and its agents to prevent the same. Tenant, its employees and agents shall not loiter in or on the entrances, corridors, sidewalks, lobbies, halls, stairways, elevators, or any Common Areas
for the purposes of smoking tobacco products or for any other purpose, nor in any way obstruct such areas, and shall use them only as a means of ingress and egress for the Premises. Smoking shall not be permitted in the Common Areas. 

6. The toilet rooms, urinals and wash bowls shall not be used for any purpose other than that for which they were constructed, and no foreign
substance of any kind whatsoever shall be thrown therein. The expense of any breakage, stoppage or damage resulting from the violation of this rule shall be borne by the tenants who, or whose employees or agents, shall have caused it. 

  
 Exhibit D 

-1- 








 7. Except for food, soft drink or other vending machines intended for the sole use of
Tenant’s employees and invitees, no vending machine or machines other than fractional horsepower office machines shall be installed, maintained or operated upon the Premises without the written consent of Landlord. All vendors or other persons
visiting the Premises shall be subject to the reasonable control of Landlord. Tenant shall not permit its vendors or other persons visiting the Premises to solicit other tenants of the Project. 

8. Tenant shall not use or keep in or on the Premises or the Project any kerosene, gasoline or other inflammable or combustible fluid or
material, except as otherwise permitted in the Lease. Tenant shall not bring into or keep within the Premises or the Project any animals, birds or vehicles (other than passenger vehicles, forklifts or bicycles). 

9. Tenant shall not use, keep or permit to be used or kept, any noxious gas or substance in or on the Premises, except as otherwise permitted
in the Lease, or permit or allow the Premises to be occupied or used in a manner offensive or objectionable to Landlord or other occupants of the Project by reason of noise, odors, or vibrations, or to otherwise unreasonably interfere with the use
of the Project by other tenants. 
 10. No cooking shall be done or permitted on the Premises nor shall the Premises be used for the storage
of merchandise, for loading or for any improper, objectionable or immoral purposes. Notwithstanding the foregoing, Underwriters’ Laboratory approved equipment and microwave ovens may be used in the Premises for heating food and brewing coffee,
tea, hot chocolate and similar beverages for employees and visitors of Tenant, provided that such use is in accordance with all applicable federal, state and city laws, codes, ordinances, rules and regulations; and provided further that such cooking
does not result in odors escaping from the Premises. 
 11. Landlord reserves the right to exclude or expel from the Project any person who,
in the judgment of Landlord, is intoxicated or under the influence of liquor or drugs, or who shall in any manner do any act in violation of any of these Rules and Regulations. 

12. No material shall be placed in the trash boxes or receptacles if such material is of such nature that it may not be disposed of in the
ordinary and customary manner of removing and disposing of trash in the vicinity of the Project without violation of any law or ordinance governing such disposal. All trash, garbage and refuse disposal shall be made only through entry-ways and
elevators provided for such purposes at such times as Landlord shall designate. 
 13. Tenant shall comply with all safety, fire protection
and evacuation procedures and regulations established by Landlord or any governmental agency. 
 14. Tenant acknowledges that the local fire
department has previously required Landlord to participate in a fire and emergency preparedness program or may require Landlord and/or Tenant to participate in such a program in the future. Tenant agrees to take all actions reasonably necessary to
comply with the requirements of such a program including, but not limited to, designating certain employees as “fire wardens” and requiring them to attend any necessary classes and meetings and to perform any required functions. 

  
 Exhibit D 

-2- 








 15. Tenant and its employees shall comply with all federal, state and local recycling and/or
resource conservation laws and shall take all actions reasonably requested by Landlord in order to comply with such laws. Tenant shall comply with and participate in any program for metering or otherwise measuring the use of utilities and services,
including, without limitation, programs requiring the disclosure or reporting of the use of any utilities or services. Tenant shall also cooperate and comply with, participate in, and assist in the implementation of (and take no action that is
inconsistent with, or which would result in Landlord, the Building and/or the Project failing to comply with the requirements of) any conservation, sustainability, recycling, energy efficiency, and waste reduction programs, environmental protection
efforts and/or other programs that are in place and/or implemented from time to time at the Building and/or the Project, including, without limitation, any required reporting, disclosure, rating or compliance system or program (including, but not
limited to any LEED ([Leadership in Energy and Environmental Design] rating or compliance system, including those currently coordinated through the U.S. Green Building Council). 

16. Smoking (including vaping) is prohibited in the Premises, the Building and all enclosed Common Areas of the Project, including all
lobbies, all hallways, all elevators and all lavatories. Without limiting the foregoing, Tenant must comply with the State of California “No-Smoking” law set forth in California Labor Code
Section 6404.5, and any local “No-Smoking” ordinance which may be in effect from time to time and which is not superseded by such State law. 

17. The Premises shall not be used as an employment agency, a public stenographer or typist, a labor union office, a physician’s or
dentist’s office, a dance or music studio, a school, a beauty salon, or barber shop, the business of photographic, multilith or multigraph reproductions or offset printing (not precluding using any part of the Premises for photographic,
multilith or multigraph reproductions solely in connection with Tenant’s own business and/or activities), a restaurant or bar, an establishment for the sale of confectionery, soda, beverages, sandwiches, ice cream or baked goods, an
establishment for preparing, dispensing or consumption of food or beverages of any kind in any manner whatsoever, or news or cigar stand, or a radio, television or recording studio, theatre or exhibition-hall, or manufacturing, or the storage or
sale of merchandise, goods, services or property of any kind at wholesale, retail or auction. 
 18. Tenant hereby acknowledges that
Landlord shall have no obligation to provide guard service or other security measures for the benefit of the Premises, the Building or the Project. Tenant hereby assumes all responsibility for the protection of Tenant and its agents, employees,
contractors, invitees and guests, and the property thereof, from acts of third parties, including keeping doors locked and other means of entry to the Premises closed, whether or not Landlord, at its option, elects to provide security protection for
the Project or any portion thereof. Tenant further assumes the risk that any safety and security devices, services and programs which Landlord elects, in its sole discretion, to provide may not be effective, or may malfunction or be circumvented by
an unauthorized third party, and Tenant shall, in addition to its other insurance obligations under this Lease, obtain its own insurance coverage to the extent Tenant desires protection against losses related to such occurrences. Tenant shall
cooperate in any reasonable safety or security program developed by Landlord or required by law. 

  
 Exhibit D 

-3- 








 Landlord reserves the right at any time to change or rescind any one or more of these Rules and
Regulations, or to make such other and further reasonable and non-discriminatory Rules and Regulations as in Landlord’s judgment may from time to time be necessary for the management, safety, care and
cleanliness of the Premises, Building, the Common Areas and the Project, and for the preservation of good order therein, as well as for the convenience of other occupants and tenants therein. Landlord may waive any one or more of these Rules and
Regulations for the benefit of any particular tenants, but no such waiver by Landlord shall be construed as a waiver of such Rules and Regulations in favor of any other tenant, nor prevent Landlord from thereafter enforcing any such Rules or
Regulations against any or all tenants of the Project. Tenant shall be deemed to have read these Rules and Regulations and to have agreed to abide by them as a condition of its occupancy of the Premises. 

  
 Exhibit D 

-4- 








 EXHIBIT D-1 

PARKING RULES 
 1. Parking
areas shall be used only for parking by vehicles no longer than full size, passenger automobiles, pickup trucks and sport utility vehicles. Tenant and its employees shall park automobiles within the lines of the parking spaces. 

2. Tenant shall not permit or allow any vehicles that belong to or are controlled by Tenant or Tenant’s employees, suppliers, shippers,
customers, or invitees to be loaded, unloaded, or parked in areas other than those designated by Landlord for such activities. Users of the parking area will obey all posted signs and park only in the areas designated for vehicle parking. 

3. Parking stickers and parking cards, if any, shall be the property of Landlord and shall be returned to Landlord by the holder thereof upon
termination of the holder’s parking privileges. Landlord may require Tenant and each of its employees to give Landlord a commercially reasonable deposit when a parking card or other parking device is issued. Landlord shall not be obligated to
return the deposit unless and until the parking card or other device is returned to Landlord. Tenant will pay such replacement charges as is reasonably established by Landlord for the loss of such devices. Loss or theft of parking identification
stickers or devices from automobiles must be reported to the parking operator immediately. Any parking identification stickers reported lost or stolen found on any unauthorized car will be confiscated and the illegal holder will be subject to
prosecution. 
 4. Unless otherwise instructed, every person using the parking area is required to park and, lock his own vehicle. Landlord
will not be responsible for any damage to vehicles, injury to persons or loss of property, all of which risks are assumed by the party using the parking area. 

5. The maintenance, washing, waxing or cleaning of vehicles in the parking structure or Common Areas is prohibited. 

6. Tenant shall be responsible for seeing that all of its employees, agents and invitees comply with the applicable parking rules,
regulations, laws, and agreements. Parking area managers or attendants, if any, are not authorized to make or allow any exceptions to these Parking Rules and Regulations. Landlord reserves the right to terminate parking rights for any person or
entity that willfully refuses to comply with these rules and regulations. 
 7. Every driver is required to park his or her own car. Tenant
agrees that all responsibility for damage to cars or the theft of or from cars is assumed by the driver, and further agrees that Tenant will hold Landlord harmless for any such damages or theft. 

8. No vehicles shall be parked in the parking areas overnight. The parking area shall only be used for daily parking and no vehicle or other
property shall be stored in a parking space. 
 9. Any vehicle parked by Tenant, its employees, contractors or visitors in a reserved
parking space or in any area of the parking area that is not designated for the parking of such a vehicle may, at Landlord’s option, and without notice or demand, be towed away by any towing company selected by Landlord, and the cost of such
towing shall be paid for by Tenant and/or the driver of said vehicle. 

  
 Exhibit D-1 

-1- 








 Landlord reserves the right at any time to reasonably change or rescind any one or more of these
Rules and Regulations, or to make such other and further reasonable and nondiscriminatory Rules and Regulations as in Landlord’s judgment may from time to time be necessary for the management, safety, care and cleanliness of the Project, and
for the preservation of good order therein, as well as for the convenience of other occupants and tenants therein. Landlord may waive any one or more of these Rules and Regulations for the benefit of any particular tenant, but no such waiver by
Landlord shall be construed as a waiver of such Rules and Regulations in favor of any other tenant, nor prevent Landlord from thereafter enforcing any such Rules or Regulations against any or all tenants of the Project. Landlord, however, shall
apply such Rules and Regulations in a nondiscriminatory manner. Tenant shall be deemed to have read these Rules and Regulations and to have agreed to abide by them. 

  
 Exhibit D-1 

-2- 








 EXHIBIT E 

FORM OF TENANT’S ESTOPPEL CERTIFICATE 

The undersigned, as Tenant under that certain Office Lease (the “Lease”) made and entered into as of
                , 201     by and between
                        , as Landlord, and the undersigned, as Tenant, for Premises on the
                     floor(s) of the office building located at
                    , certifies as follows: 

1. Attached hereto as Exhibit A is a true and correct copy of the Lease and all amendments and modifications
thereto. The documents contained in Exhibit A represent the entire agreement between the parties as to the Premises. 

2. The undersigned currently occupies the Premises described in the Lease, the Lease Term commenced on
                    , and the Lease Term expires on
                        , and the undersigned has no option to terminate or cancel the Lease or to purchase all or any
part of the Premises, the Building and/or the Project, except as provided in the Lease. 
 3. Base Rent became payable on
                            . 

4. The Lease is in full force and effect and has not been modified, supplemented or amended in any way except as provided in
Exhibit A. 
 5. Tenant has not transferred, assigned, or sublet any portion of the Premises nor entered into any
license or concession agreements with respect thereto except as follows: 
 6. All monthly installments of Base Rent, all Additional Rent
and all monthly installments of estimated Additional Rent have been paid when due through                     . The current monthly
installment of Base Rent is $                        . 

7. To Tenant’s current actual knowledge, all conditions of the Lease to be performed by Landlord necessary to the enforceability of the
Lease have been satisfied and Landlord is not in default thereunder. In addition, the undersigned has not delivered any notice to Landlord regarding a default by Landlord thereunder. 

8. No rental has been paid more than thirty (30) days in advance and no security has been deposited with Landlord except the Security
Deposit in the amount of
$                                        
as provided in the Lease. 
 9. As of the date hereof, there are no existing defenses or offsets, or, to the undersigned’s current
actual knowledge, claims or any basis for a claim, that the undersigned has against Landlord. 
 10. If Tenant is a corporation, limited
liability company, partnership or limited liability partnership, Tenant hereby represents and warrants that Tenant is a duly formed and existing entity qualified to do business in California and that Tenant has full right and authority to execute
and deliver this Estoppel Certificate and that each person signing on behalf of Tenant is authorized to do so. 

  
 Exhibit E 

-1- 








 12. To Tenant’s current actual knowledge, there are no actions pending against the
undersigned under the bankruptcy or similar laws of the United States or any state. 
 13. Other than in compliance with all applicable laws
and the Lease, the Tenant has not used or stored any hazardous substances in the Premises. 
 14. To Tenant’s current actual knowledge,
all tenant improvement work to be performed by Landlord under the Lease has been completed in accordance with the Lease and has been accepted by the undersigned and all reimbursements and allowances due to the undersigned under the Lease in
connection with any tenant improvement work have been paid in full. 
 The undersigned acknowledges that this Estoppel Certificate may be
delivered to Landlord or to a prospective mortgagee or prospective purchaser, and acknowledges that said prospective mortgagee or prospective purchaser will be relying upon the statements contained herein in making the loan or acquiring the property
of which the Premises are a part and that receipt by it of this certificate is a condition of making such loan or acquiring such property. 
 Executed at
                                     on the
             day of                 , 201    . 

 

					
	 “Tenant”:
  

Allakos, Inc.,
 a Delaware corporation

		
	By:	 	 
		 	Its:	 	 
		
	By:	 	 
		 	Its:	 	 



  
 Exhibit E 

-2- 








 EXHIBIT F 

COMMENCEMENT DATE MEMORANDUM 

With respect to that certain lease (“Lease”) dated
                            , 20         between
WESTPORT OFFICE PARK, LLC, a California limited liability company (“Landlord”), and
                                     (“Tenant”),
whereby Landlord leased to Tenant and Tenant leased from Landlord approximately                  rentable square feet of that certain office building located at
, California (“Premises”), Tenant hereby acknowledges and certifies to Landlord as follows: 
 (1) Landlord delivered
possession of the Premises to Tenant substantially complete on
                                         
               ; 
 (2) The Lease commenced on
                                 (“Commencement Date”) and Tenant’s
obligation to pay Rent commenced on
                                         
       ; 
 (3) The Expiration Date of the Lease is
                                    ; 

(4) The Premises contain
                         rentable square feet of space; and 

(5) Tenant has accepted the Premises. 

(6) Tenant’s Building Percentage is
                                         
                            

(7) Base Rent per month is
                                 

IN WITNESS WHEREOF, this Commencement Date Memorandum is executed this day of
                                 

 

					
	“Tenant”
	
	 
	 
		
	By:	 	 
		 	Its:	 	 
		
	By:	 	 
		 	Its:	 	 



  
 Exhibit F 

-1- 








 EXHIBIT G 

STANDARDS FOR UTILITIES AND SERVICES 

The following Standards for Utilities and Services are in effect. Landlord reserves the right to adopt nondiscriminatory modifications and
additions hereto provided that such modifications do not interfere with Tenant’s use of the Premises, materially increase the obligations or decrease the rights of Tenant under the Lease: 

(a) On Monday through Friday, except holidays, from 8 A.M. to 6 P.M. (and other times for a reasonable additional charge to be fixed by
Landlord), ventilate the Premises and furnish air conditioning or heating on such days and hours, when in the judgment of Landlord it may be required for the comfortable occupancy of the Premises. The air conditioning system achieves maximum cooling
when the window coverings are closed. Landlord shall not be responsible for room temperatures if Tenant does not keep all window coverings in the Premises closed whenever the system is in operation. Tenant agrees to cooperate fully at all times with
Landlord, and to abide by all regulations and requirements which Landlord may reasonably prescribe for the proper function and protection of said air conditioning system. Tenant agrees not to connect any apparatus, device, conduit or pipe to the
Building chilled and hot water air conditioning supply lines. Tenant further agrees that neither Tenant nor its servants, employees, agents, visitors, licensees or contractors shall at any time enter mechanical installations or facilities of the
Building or adjust, tamper with, or touch said installations or facilities. The cost of maintenance and service calls to adjust and regulate the air conditioning system shall be charged to Tenant if the need for maintenance work results from either
Tenant’s adjustment of room thermostats or Tenant’s failure to comply with its obligations under this section, including keeping window coverings closed as needed. Such work shall be charged at hourly rates equal to then current
journeymen’s wages for air conditioning mechanics. 
 (b) Landlord reserves the right to charge Tenant for the cost to Landlord of
providing such after-hours heating and air-conditioning requested by Tenant; provided such charge applies non-discriminatorily to all occupants of the Project. 

(c) Landlord shall furnish to the Premises, at all times, electric current sufficient for normal office and lab use. Tenant agrees, should its
electrical installation or electrical consumption be in excess of the aforesaid quantity, to reimburse Landlord monthly for the measured excess consumption at the average cost per kilowatt hour charged to the Building during the period. If a
separate meter is not installed at Tenant’s cost, such excess cost will be established by an estimate agreed upon by Landlord and Tenant, and if the parties fail to agree, as established by an independent licensed engineer. Said estimates to be
reviewed and adjusted quarterly. Tenant agrees not to use any apparatus or device in, or upon, or about the Premises which may in any way increase the amount of such services usually furnished or supplied to said Premises, and Tenant further agrees
not to connect any apparatus or device with wires, conduits or pipes, or other means by which such services are supplied, for the purpose of using additional or unusual amounts of such services without written consent of Landlord. Should Tenant use
the same to excess, the refusal on the part of Tenant to pay upon demand of Landlord the amount established by Landlord for such excess charge shall constitute a breach of the obligation to pay Rent under this Lease and shall entitle Landlord to the
rights therein granted for such breach. At 

  
 Exhibit G 

-1- 








 
all times Tenant’s use of electric current shall never exceed the capacity of the feeders to the Building or the risers or wiring installation and Tenant shall not install or use or permit
the installation or use any computer or electronic data processing equipment in the Premises (excluding Permitted Equipment) in excess of the scope of such equipment that is customary for general office/R&D use in space of comparable size in
Comparable Buildings, without the prior written consent of Landlord. If Tenant is billed directly by a public utility with respect to Tenant’s electrical usage at the Premises, upon request from time to time, Tenant shall provide monthly
electrical utility usage for the Premises to Landlord for the period of time requested by Landlord (in electronic or paper format) or, at Landlord’s option, provide any written authorization or other documentation required for Landlord to
request information regarding Tenant’s electricity usage with respect to the Premises directly from the applicable utility company. 

(d) Water will be available in the Premises and public areas for drinking, lavatory and lab purposes only, but if Tenant requires, uses or
consumes water for any purposes in addition to ordinary drinking, lavatory and lab purposes of which fact Tenant constitutes Landlord to be the sole judge, Landlord may install a water meter and thereby measure Tenant’s water consumption for
all purposes. Tenant shall pay Landlord for the cost of the meter and the cost of the installation thereof and throughout the duration of Tenant’s occupancy Tenant shall keep said meter and installation equipment in good working order and
repair at Tenant’s own cost and expense, in default of which Landlord may cause such meter and equipment to be replaced or repaired and collect the cost thereof from Tenant. Tenant agrees to pay for water consumed, as shown on said meter, as
and when bills are rendered, and on default in making such payment, Landlord may pay such charges and collect the same from Tenant. Any such costs or expenses incurred, or payments made by Landlord for any of the reasons or purposes hereinabove
stated shall be deemed to be additional rent payable by Tenant and collectible by Landlord as such. 
 (e) Landlord reserves the right to
stop service of the elevator, plumbing, ventilation, air conditioning and electric systems, when necessary, by reason of accident or emergency or for repairs, alterations or improvements, in the judgment of Landlord desirable or necessary to be
made, until said repairs, alterations or improvements shall have been completed, and shall further have no responsibility or liability for failure to supply elevator facilities, plumbing, ventilating, air conditioning or electric service, when
prevented from so doing by strike or accident or by any cause beyond Landlord’s reasonable control, or by laws, rules, orders, ordinances, directions, regulations or requirements of any federal, state, county or municipal authority or failure
of gas, oil or other suitable fuel supply or inability by exercise of reasonable diligence to obtain gas, oil or other suitable fuel; provided that Landlord shall make commercially reasonable efforts to minimize the disruption to Tenant’s
business operations during standard business hours. It is expressly understood and agreed that any covenants on Landlord’s part to furnish any service pursuant to any of the terms, covenants, conditions, provisions or agreements of this Lease,
or to perform any act or thing for the benefit of Tenant, shall not be deemed breached if Landlord is unable to furnish or perform the same by virtue of a strike or labor trouble or any other cause whatsoever beyond Landlord’s control. 

  
 Exhibit G 

-2- 








 EXHIBIT H 

COPY OF ORDER 
 (See
Attached.) 

  
 Exhibit H 

-1- 








 CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD 

SAN FRANCISCO BAY REGION 
 ORDER NO. R2-2003-0074 
 UPDATED WASTE DISCHARGE REQUIREMENTS 

AND RESCISSION OF ORDER NO. 94-181 FOR: 

WESTPORT LANDFILL 
 JOHN ARRILLAGA SURVIVOR’S
TRUST, THE PEERY PRIVATE 
 INVESTMENT COMPANY, PEERY PUBLIC INVESTMENT COMPANY 

REDWOOD CITY, SAN MATEO COUNTY 
 The California Regional
Water Quality Control Board, San Francisco Bay Region, (hereinafter called the Board), finds that: 
 SITE OWNER AND LOCATION 

 

	1.	The legal owners of the site are the John Arrillaga Survivor’s Trust, The Peery Private Investment Company, and the Peery Public Investment Company and are hereinafter referred to as the Dischargers. The unlined
landfill site, as shown in Figure 1, is located adjacent to Belmont Slough in Redwood City. A commercial business park including twenty (20) two-story buildings and associated site improvements has been
constructed at the site (Figure 2). 

 PURPOSE OF ORDER UPDATE 

 

	2.	The primary purposes of this Order are 1) to update the existing Waste Discharge Requirements (WDRs) to reflect recent site development and current facility conditions and 2) to assure compliance with the appropriate
portions of Title 27 of the California Code Of Regulations (formerly known as Chapter 15, Title 23), referred to hereinafter as Title 27. The “appropriate portions” of Title 27 are hereby defined as the relevant sections pertaining to
post-closure maintenance and water quality monitoring. 

 SITE DESCRIPTION 

 

	3.	The site was tidal marshlands until approximately 1910, at which time the area was diked and portions used for pastureland and for a hog farm. The landfill area was used as a refuse disposal site from about 1948 to its
closing in about 1970. Disposal in the southeastern portion of the site (referred to as the Panhandle area) reportedly ceased in about 1963, while disposal in the northeastern portion of the site (the Mound area) continued until about 1970.


  

	4.	The Westport Landfill is a closed 45-acre unlined site located approximately one-mile east of Highway 101, and is bordered by Belmont
Slough to the north and west, and by existing residential developments and Marine World Parkway to the east and south. The landfill covers the majority of two contiguous parcels that have been developed as a commercial business park called Westport
Office Park. 


  
 Exhibit H 

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	5.	The site currently includes a commercial business park with twenty (20) two-story office and research buildings totaling approximately 968,000 leasable square feet. The site
(Figure 2) is currently covered by approximately 522,000 square feet of building footprints (14.2% of entire area), 1,522,100 square feet of asphalt and concrete pavement (41.4% of entire area), and 1,631,400 square feet of landscaped area (44.4% of
entire area). 

 REGULATORY HISTORY 
  

	6.	On July 20, 1976 Waste Discharge Requirements were adopted for the site in Board Order No. 76-77. In that Order Parkwood 101, Limited (the previous landfill owner), was
required to place “a final cover of at least four-feet of compacted inert fill material” over the waste disposal areas. Board Order No. 76¬77 was subsequently revised on October 18, 1977 by Order No. 77-134, wherein a revised time schedule was adopted for compliance with site closure specifications. Closure activities at the site included placement of additional cover material over the waste disposal
areas and grading to eliminate ponding. 

  

	7.	On December 14, 1994, the Board adopted Order No. 94-181, rescinding Order Nos. 76-77 and
77-134. Among other activities in response to the requirements of Order No. 94-181, and in conjunction with the reconstructed cap and site development, the lateral
extent of refuse was determined using historical aerial photos taken throughout the operational period of the landfill and through organized trenching. Based on the results of these studies a perimeter cut-off
wall was installed consisting of a vertical clay barrier with a minimum width of two-feet connecting the overlying low permeability cover layer with the underlying young Bay Mud, completing the containment
envelope. The vertical extent of the refuse as depicted in various geotechnical studies was confirmed by a deep boring program and by pile driving observations. 


LANDFILL HISTORY 
  

	8.	Approximately 45 acres of the project site were used for landfill disposal of municipal solid waste and incinerator ash from about 1948 to about 1970. Approximately 650,000 cubic yards of fill material was disposed of
at the site on the existing unlined Bay Mud. The waste material reportedly disposed at the site consists of non-hazardous material including: municipal solid waste, construction debris paper, glass, plastic,
wood, rock fragments, and incinerator ashes. 

  

	9.	The landfill can be divided into three areas. Refuse is present primarily in the southern and eastern portions of the site and forms two elevated areas, referred to as (1) the Mound (35 acres) in the eastern
portion of the site, and (2) the Panhandle (an elongated area of 10 acres) along the southeastern property boundary. The third area (40 acres), located between the refuse fill and the levees, is a
low-lying area where unplanned sporadic refuse disposal occurred. Limited refuse disposal activities occurred outside the current property boundary as indicated by small pockets of discontinuous refuse
identified during the installation of underground utilities and a perimeter leachate collection system. The site’s surface soils are currently composed largely of fill that has been used to: establish a cap over the refuse fill area; to fill low-lying elevations; to construct building pads; to serve as a base for site paving; and, to provide topsoil for landscaped areas. 


  
 Exhibit H 

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 LANDFILL INVESTIGATIONS AND WORK 
  


	10.	During the 1970’s several possible real estate developments were proposed and various site investigations were performed. Until Westport Office Park, no proposed project continued beyond the preliminary stage. In
conjunction with the planning and design of Westport Office Park, additional site investigations were performed and substantial information was developed and recorded. 


 

	11.	Preliminary Soil and Groundwater Investigation- 1988: In 1988, a preliminary soil and groundwater investigation was conducted by Kaldveer Associates. Kaldveer installed five monitoring wells in the western
portion of the site to evaluate shallow groundwater quality adjacent to the refuse fill area. 

  

	12.	SWAT- 1988 to 1989: In 1988 and 1989, Levine-Fricke conducted a Solid Waste Assessment Test (SWAT) to determine the landfill’s potential to have adverse effects on water quality. Levine-Fricke installed
seven shallow groundwater monitoring wells outside the primary refuse areas, seven monitoring wells within the primary refuse areas, and three deeper wells. 

  

	13.	Addendum to SWAT- 1992 and 1993: Levine-Fricke conducted groundwater monitoring activities to complete the SWAT. 

  

	14.	Removal and Replacement of Lead-Affected Soils and Landfill Materials- 1994: Levine-Fricke investigated and remediated lead-affected soil in three locations at the site. In order to complete the removal
activities, two monitoring wells were abandoned. (P-1A and P-5) 

  

	15.	On March 2, 1994, United Soil Engineering, Inc., (USE) conducted an investigation to determine the thickness of the landfill cover. A total of 77 borings were advanced to a depth of 6 feet. USE’s investigation
revealed that some portions of the landfill cover did not meet the four-foot cover requirement as specified in Order No. 76-77 and as revised by Order
No. 77-134. USE’s investigations revealed that an additional one to two feet of clay or low permeability soil was required to achieve the minimum required thickness for most of the landfill cover.


  

	16.	Provision C.10 of WDR Order No. 94-181 required the Dischargers to reconstruct those portions of the landfill cap that did not meet the requirements of Section 2581 of
Article 8, Chapter 15 (e.g., a cap containing a minimum of two feet of foundation material, one foot low permeability layer with a hydraulic conductivity of less than or equal to 10-6 cm/sec, and a one foot
layer for erosion protection). The Dischargers submitted a Cap Reconstruction Plan dated February 14, 1995. The Cap Reconstruction is now complete in conformance with the Cap Reconstruction Plan. 


  
 Exhibit H 

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	17.	Deep Boring Program — 1995: Geomatrix performed a subsurface study to determine the physical characteristics of the soil by advancing 13 deep borings to approximately 140 feet BGS. 


 

	18.	Additional Well Installation — 1996-1998: Geomatrix installed four new monitoring wells to provide additional monitoring points for the landfill, as required by Board Order
No. 94-181. (MW3-1R, MW3-2, MW-4, and P5-1).


  

	19.	Ammonia Investigation — 1998: Geomatrix conducted an assessment of ammonia in soil and groundwater in the vicinity of the former pig farm and found that these conditions may not be related to the landfill.
Soil and grab groundwater samples were collected from 11 borings. 

  

	20.	Acetone Investigation — 1999: Following the detection of acetone in a groundwater sample collected during a semi-annual monitoring event, an investigation was conducted by Geomatrix to assess the lateral
extent of the acetone. Grab groundwater samples were collected from borings placed in the vicinity of the well where acetone had been detected. 

  

	21.	Concurrent with site and building approval and construction (most of which took place in the late 1990s), landfill gas (LFG) venting and monitoring systems were approved and installed and meet regulatory requirements.


 SITE GEOLOGIC SETTING 
  

	22.	The site is domed in the northeast, central, and southeast portions of the site where refuse was placed and is relatively flat in the northwest and west portions. Elevations at the site currently range from 104.5 to
133.5 feet where City of Redwood City datum 100.0 equals mean sea level. The fill at the site overlies estuarine deposits referred to as Bay Mud. The Bay Mud deposits surround San Francisco Bay and generally consist of very low permeability plastic
silty clays with high organic content. Stiff to very stiff sandy clay/clayey sand has been encountered below the Bay Mud extending to a depth of approximately 200 feet below ground surface (bgs). It has been reported that a moderately permeable
sequence of clay, sand, and gravel underlies the stiff clays, beginning at a depth of 200 feet bgs. Franciscan bedrock was reported to exist at a depth of approximately 300 feet bgs along the western side of the site and 500 feet bgs along the
eastern side of the site. 

 SITE HYDROGEOLOGIC SETTING 
  

	23.	Hydrogeologic investigations have shown that, within the former landfill, the groundwater movement is radially away from the Mound area (eastern portion of site). As part of corrective action at the site groundwater
collection trenches were installed along the northern and southeastern margins of the Mound and the Panhandle to assist with containment and removal of leachate-impacted groundwater adjacent to the primary refuse disposal areas. 


  
 Exhibit H 

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	24.	The direction of deeper groundwater flow cannot be established with a high level of certainty because of the relatively discontinuous nature of the water bearing zones in the low permeability clay layer beneath the
younger Bay Mud. However, it has been reported that regional hydrogeologic conditions suggest that deeper groundwater flows in an easterly direction towards San Francisco Bay. 


 

	25.	Comparisons of shallow and deep groundwater levels have indicated the existence of both upward and downward vertical hydraulic gradients across the site. 


 

	26.	Confined regional aquifer zones of moderate permeability are present at a depth of approximately 190 to 200 feet bgs. These aquifer zones are an extension of the major artesian basin of the south Bay and Santa Clara
Valley and consists chiefly of unconsolidated Quaternary Alluvium. 

 GROUND WATER CONTAMINATION AND WATER QUALITY 

 

	27.	Groundwater within the landfill refuse has been shown to contain volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), polychlorinated biphenyls (PCBs), and ammonia. 


 

	28.	Shallow and deep groundwater around the perimeter and/or beneath the landfill, outside the refuse limit, has had sporadic detections of low levels of VOCs and SVOCs at the following maximum concentrations: benzene at
7.2 micrograms per liter (p.g/L), ethyl-benzene at 5 1.tg/L, acetone at 120 μg/L, toluene at 6μg2, trichloroethylene at 33 j.tg/L, carbon tetra-chloride at 5 μg/L, 1,1,1-trichloroethane at 7 gg/L, chloroform at 1 4-methyl-2-pentanone at 43 pg/L, phenol at 54
μg/L, bis (2-ethylhexyl) phthalate at 81 μg/L. Elevated concentrations of ammonia are present along the western edge of the landfill where a pig farm operated during the 1940’s and 1950’s
and is the suspected ammonia source. 

 LEACHATE COLLECTION AND REMOVAL SYSTEM (LCRS) 

 

	29.	The leachate collection system at the site was expanded and upgraded in 1998, concurrent with site development and consists of three groundwater collection trenches. The trenches were excavated to depths of 8 to 13 feet
bgs and intercept the full thickness of the refuse-containing fill layer. The collection trenches are filled with permeable material to allow leachate to flow into perforated collection pipes. The trenches are capped with low-permeability clay. The locations of the leachate control trenches are shown in Figure 2. The northern leachate collection and removal trench is. 1,400 feet long and is fitted with a sensor-activated automatic
pumping system that periodically pumps leachate from manhole No. 3 to a connection with the sanitary sewer lateral where the leachate then flows by gravity to the South Bayside System Authority (SBSA) publicly operated treatment works (POTW)
plant.. The two southeastern leachate collection and removal trenches total 2,800 feet in length. To remove leachate-impacted groundwater from these trenches, sensor activated automatic pumping systems have been installed in manhole No.’s 1 and
2; leachate-impacted groundwater is automatically pumped from manhole No. 2 and from manhole No. 1 to the sanitary sewer lateral where the leachate then flows by gravity to the SBSA POTW plant. 


  
 Exhibit H 

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	30.	Leachate is discharged under a permit issued by the SBSA. The SBSA does random sampling and testing of the leachate discharge. All repeat test results forwarded by the SBSA have shown that the leachate discharge meets
the SBSA criteria for discharge to the SBSA system without treatment. 

 LANDFILL GAS MANAGEMENT 

 

	31.	Concurrently with site and building approval and construction, landfill gas (LFG) venting and monitoring systems for each building were approved and installed. A trench network was excavated under each building. A
perforated high-density polyethylene (HDPE) pipe was embedded in rounded rock backfill in these trenches. The perforated pipes were extended beyond the building perimeter where they were manifolded together. The LFG pipe manifolds are connected to
..vertical LFG vent risers that allow the LFG to be vented to, and dissipated in, the atmosphere. The LFG vent risers and their immediate vicinity are monitored at a minimum of monthly to insure that dangerous concentrations of gas do not exist.


  

	32.	A continuous 60 mil HDPE membrane was installed on the underside of each first floor building slab to prevent LFG penetration into each building. Each building has a system of ten LFG sensors that are continuously
monitored by an offsite life safety monitoring company. The LFG sensors are calibrated quarterly. The LFG detection alarm system and the LFG sensor calibration records are inspected annually by the San Mateo County Health Services Agency.


  

	33.	The LCRS trenches described above also act as a LFG cut-off wall. There are 13 LFG vent risers connected to the vadose zone in the permeable material above the leachate. They
serve to collect the LFG intercepted by the leachate trenches and to vent this gas to the atmosphere before the LFG migrates to the property line. These LFG vent risers are monitored and inspected not less frequently then once per month.


 CURRENT AND FUTURE LAND USES 
  

	34.	In accordance with plans submitted to, and approved by, the City of Redwood City and the San Mateo County Health Services Agency, the former landfill site has been developed, occupied, and maintained as a commercial
business park. 

  

	35.	The parcels are zoned for commercial use by the City of Redwood City. Permits for additional development and/or modifications to the existing developments may be applied for in the future. 


POST CLOSURE MONITORING AND MAINTENANCE 
  

	36.	The Dischargers submitted Utility Inspection, Maintenance, and Settlement Monitoring programs for different portions of the site to the City of Redwood City as part of the site’s post-closure activities. This
program includes providing surveyed permanent benchmarks on the property, surveyed utility alignments, and detailed periodic observations and records of settlement of the water facilities and the sanitary sewer force main. 


  
 Exhibit H 

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 MONITORING PROGRAMS 
  

	37.	Title 27 requires that the Dischargers maintain a groundwater-monitoring program designed to detect the presence of waste constituents in groundwater outside of the waste management unit (WMU). The required monitoring
is included in the Discharge Monitoring Program (Attachment A) and consists of a list of constituents of concern (COCs), sampling frequency, approved analytical methods, reporting requirements, the point of compliance, and an approved evaluation
method to determine compliance consistent with Title 27. 

  

	38.	Groundwater Monitoring—Board Order No. 94-181 required the Dischargers to document the installation of four additional monitoring wells to be included in
the Discharge Monitoring Program (Attachment A). A report documenting completion of these wells, or their equivalent monitoring points, was submitted to the Board in a letter dated June 28, 1996. (MW3-1R,
MW3-2, MW-4, and P5-1). 

  

	39.	Groundwater Monitoring—There are 12 shallow (4 feet to 32 feet bgs) groundwater monitoring wells and piezometers at the site. These are shown on Figure 2 and include
P3-R, P-7, P-8, MW-4, MW-4P, K-4, P5-1R, MW-3, MW3-2R, UPG-1, UPG-2, and K-1. There are three deeper (35 feet to 72 feet bgs,/ groundwater-monitoring wells and piezometers at the site. These are shown on Figure 2 and include DW-1, DW-2 and DW-3. Groundwater-monitoring is detailed in the Discharge Monitoring Program attached to this Order (Attachment A). The
Dischargers are required to analyze according to the monitoring parameters presented in Attachment A of this Order. 

  

	40.	Leachate Monitoring — There are 17 leachate monitoring wells/piezometers at the site. These are shown on Figure 2 and include S-2, S-3A, S-4A, S-5, P-2A, P3-PZ, P-4, P5-1-PZ, P-6, K3-R,
K3-PZ, MW3-1R, PZ-2, PZ-2P, PZ-3A, PZ-3B, and PZ-3C. The Leachate Monitoring Program is detailed in the Discharge Monitoring Program attached to this Order (Attachment A). 


 

	41.	Vadose Zone Monitoring — Vadose zone monitoring is conducted as part of the landfill gas venting and monitoring program and has been integrated into the commercial development of the site.


 BASIN PLAN 
  

	42.	The Regional Board adopted a revised Water Quality Plan for the San Francisco Bay Basin (Basin Plan) in June 21, 1995. This updated and consolidated plan represents the Board’s master water quality control
planning document. The State Water Resource Control Board and the Office of the Administrative Law approved the revised Basin Plan on July 20 and November 13, respectively, of 1995. A summary of regulatory provisions is contained in Title
23 of the California Code of Regulations, Section 3912. The Basin Plan defines beneficial uses and water quality objectives for waters of the State, including surface waters and groundwater. 


  
 Exhibit H 

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	43.	State Board Resolution No. 89-39, “Sources of Drinking Water,” defines potential sources of drinking water to include all groundwater in the region, with limited
exceptions for areas containing high TDS, high background contaminant levels, or those areas with a low-yield. Shallow and deeper (33-75 feet bgs) groundwater at the
site is not considered a potential drinking water source as it exceeds electrical conductivities of 5,000 microseimens per centimeter (uS/cm). There is no current use of the site’s shallow or deep groundwater, nor any anticipated plans for its
use. However, any groundwater at the site meeting Resolution 89-39 requirements of TDS concentrations below 3000 mg/L, electrical conductivities below 5,000 uS/cm, and with production yields greater that 200
gallons per day will be considered a potential drinking water source. 

 BENEFICIAL USES 

 

	44.	The beneficial uses of Belmont Slough, and South San Francisco Bay as contained in the Basin Plan are as follows: 

  

	 	a.	Wildlife habitat; 


	 	b.	Brackish and salt water marshes; 


	 	c.	Water contact recreation; 


	 	d.	Non-water contact recreation; 


	 	e.	Commercial and sport fishing; 


	 	f.	Preservation of rare and endangered species; 


	 	g.	Estuarine habitat; 


	 	h.	Fish migration and spawning; 


	 	i.	Industrial process supply; and, 


	 	j.	Industrial service supply. 

  

	45.	The present and potential beneficial uses of the groundwater are as follows: 

  

	 	k.	Domestic and municipal water supply; 


	 	l.	Freshwater replenishment; and, 


	 	m.	Agricultural supply. 

 STORM WATER POLLUTION PREVENTION 

 

	46.	Board Order No. 94-181 required the Dischargers to prepare, implement and submit a Storm Water Pollution Prevention Plan (SWPPP) in accordance with requirements specified in
State Water Resources Control Board General Permit for Storm Water Discharges Associated with Industrial Activities (NPDES Permit No. CAS000001). The Dischargers prepared and submitted a SWPPP dated March 24, 1995, in accordance with
requirements specified in State Water Resources Control Board General Permit for Storm Water Discharges Associated with Construction Activities (NPDES Permit No. CAS000002). The SWPPP was implemented at the site during the construction phase. The
NPDES General Permit requires the Dischargers to submit annual reports. The Dischargers implemented the SWPPP and submitted annual reports. With the completion of the construction phase, the Dischargers have filed a Notice of Termination for the
site. 


  
 Exhibit H 

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 CONTINGENCY PLAN 
  

	47.	Board Order No. 94-181 required the Dischargers to submit a Contingency Plan that would be implemented in the event of a leak or spill from the leachate collection
facilities. An acceptable Contingency Plan was submitted to the Board on March 15, 1995. The Contingency Plan provides for immediate notice to the Board, the Local Enforcement Agency, and the California Department of Toxic Substances Control.
The Contingency Plan also provides for the implementation of a corrective action plan to stop and contain the migration of pollutants from the site. 


POST-EARTHQUAKE INSPECTION AND CORRECTIVE ACTION PLAN 
  

	48.	Board Order No. 94-181 required the Dischargers to submit a detailed Post-Earthquake Inspection and Corrective Action Plan to be implemented in the event of an earthquake
generating ground shaking of Richter Magnitude 7 or greater at, or within 30 miles of, the landfill. The Dischargers submitted an acceptable Plan dated March 14, 1995. The Plan describes containment features and groundwater monitoring and
leachate control facilities potentially impacted by the static and seismic deformations of the landfill. The Plan provides for reporting results of the post earthquake inspection to the Board within 72 hours of the occurrence of an appropriate
earthquake. Immediately after an earthquake event causing damage to the landfill structures, the Plan includes the implementation of the corrective action plan and includes providing notification of any damage to the Board. 


CALIFORNIA ENVIRONMENTAL QUALITY ACT 
  

	49.	The Dischargers have completed a Final Environmental Impact Report, a Supplemental Environmental Impact Report, a Health Risk Assessment, and a Technical Addendum for development at the site that resulted in the filing
of Notice of Determination 108639 Appendix H by the Redwood City Planning Division on March 3, 1995 stating that the findings were pursuant to California Environmental Quality Act (CEQA). 


 

	50.	This action is exempted from the provision of CEQA pursuant to Section 15301, Title 14, of the California Code of Regulations. 


PUBLIC NOTICE 
  

	51.	The Board has notified the Dischargers and interested agencies and persons of its intent to issue waste discharge requirements for the Dischargers and has provided them with an opportunity for a public hearing and an
opportunity to submit their written views and recommendations. 

 PUBLIC MEETING 

 

	52.	The Board in a public meeting heard and considered all comments pertaining to the discharge. 


  
 Exhibit H 

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 IT IS HEREBY ORDERED that the Dischargers, their agents, successors and assigns are to conduct
post-closure maintenance and monitoring and shall meet the applicable provisions contained in Title 27, Division 2, Subdivision 1 of the California Code of Regulations and Division 7 of the California Water Code and shall comply with the following:

  

	A.	PROHIBITIONS 

  

	1.	Waste shall not be in contact with ponded water from any source whatsoever. 

  

	2.	The site is regulated as a closed facility. Therefore, no further waste shall be deposited or stored at this site. 

  

	3.	Leachate from waste and ponded water containing leachate or in contact with solid wastes shall not be discharged to the waters of the State or the United States. 


 

	4.	Neither the treatment nor the discharge of waste shall create a condition of pollution, contamination or nuisance, as defined by Section 13050 of the California Water Code (CWC). (H & SC Section 5411,
CWC Section 13263). 

  

	5.	The Dischargers, or any future site owner or operator of the site, shall not cause the following conditions to exist in waters of the State at any place outside the waste management facility: 


 

	 	a.	Surface Waters 

  

	 	1)	Floating, suspended, or deposited macroscopic particulate matter or foam. 

  

	 	2)	Bottom deposits or aquatic growths; 

  

	 	3)	Alteration of temperature, turbidity, or apparent color beyond natural background levels; 

  

	 	4)	Visible, floating, suspended or deposited oil or other products of petroleum origin; and, 

  

	 	5)	Toxic or other deleterious substances to be present in concentrations or quantities which may cause deleterious effects on aquatic biota, wildlife or waterfowl, or which render any of these unfit for human consumption
either at levels created in the receiving waters or as a result of biological concentrations. 

  

	 	b.	Groundwater 

  

	 	1)	Groundwater shall not be degraded as a result of the waste maintained at this facility. 

  

	B.	SPECIFICATIONS 

  

	1.	All reports pursuant to this order shall be prepared under the supervision of a registered civil engineer, California registered geologist or certified engineering geologist. 


  
 Exhibit H 

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	2.	The final cover system shall be maintained to promote lateral runoff and prevent ponding and infiltration of water. 

  

	3.	Surface drainage from tributary areas and internal site drainage from surface sources shall not contact or percolate through wastes during the life of the site. 


 

	4.	The site shall be protected from any washout or erosion of wastes or covering material and from inundation which could occur as a result of a 100-year, 24-hour precipitation event, or as the result of flooding with a return frequency of 100 years. 

  

	5.	The existing LCRS shall be inspected monthly or more frequently as necessary and any excess accumulated fluid shall be removed. 

  

	6.	The existing containment, drainage, landfill gas, leachate collection, and monitoring systems at the facility, shall be operated and/or maintained as long as leachate or landfill gas is present and either or both pose a
threat to water quality. In the event these existing features are found to be ineffective at resolving impairments to groundwater, the Dischargers may be required to take additional corrective actions. 


 

	7.	The Dischargers shall assure that the foundation of the site, the solid waste fill, and the structures (including future site structures) which control leachate, surface drainage, erosion, and gas are maintained to
relevant engineering criteria, including the ability to withstand conditions generated during the maximum probable earthquake. FurtherMore, new structures shall be constructed and maintained in compliance with approved engineering criteria.


  

	8.	The Dischargers shall analyze the samples from the specified groundwater wells as outlined in the Discharge Monitoring Program (Attachment A). 


 

	9.	The Dischargers shall install any reasonable additional groundwater and leachate monitoring devices required to fulfill the terms of any future Discharge Monitoring Program issued by the Executive Officer.


  

	10.	Landfill gases shall be adequately vented, removed from the landfill, or otherwise controlled to minimize the danger of explosion, adverse health effects, nuisance conditions, or the impairment of beneficial uses of
water. 

  

	11.	The Dischargers are subject to performance standards adopted by the California Integrated Waste Management Board for post-closure land use, which specify that the devices and features installed in accordance with this
Order are designed, maintained, and continue to operate as intended without significant interruption. 

  

	12.	The Dischargers shall maintain a minimum of two surveyed permanent monuments installed by a licensed land surveyor near the landfill from which the location and elevation of wastes, containment structures, and
monitoring facilities can be determined throughout the operation and post-closure maintenance period. 


  
 Exhibit H 

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	13.	The Regional Board shall be notified immediately of any failure occurring in the waste management unit. Any failure that threatens the integrity of containment features or the landfill shall be promptly corrected after
approval of the method and schedule by the Executive Officer. 

  

	14.	The Dischargers shall maintain the facility so as to prevent a statistically significant increase in the concentrations of indicator parameters or constituents of concern at groundwater monitoring points as provided in
Section 20415 (e) (7) of Title 27. The Dischargers shall maintain the facility so as not to exceed the “Water Quality Protection Standard” (WQPS) of the Discharge Monitoring Program (Attachment A). 


 

	15.	In the event of a release of a constituent of concern from the WMU beyond the Point of Compliance (Section 20405, Title 27), the site begins a Compliance Period (Section 20410, Title 27). During the Compliance Period,
the Dischargers shall perform an Evaluation Monitoring Program and, depending on the findings, prepare an Optional Demonstration Report or Feasibility Study and Corrective Action Program, as appropriate. The Point of Compliance is defined as the
vertical surface located along the hydraulically downgradient limit of the waste management unit and extending through the uppermost aquifer underlying the unit. 

  


	16.	The Dischargers shall comply with all applicable provisions of Title 27 of the California Code of Regulations not specifically referred to in this Order. 


 

	C.	PROVISIONS 

  

	1.	The Dischargers shall comply with all Prohibitions, Specifications and Provisions of this Order. All required submittals must be acceptable to the Executive Officer. The Dischargers must also comply with all conditions
of these Waste Discharge’ Requirements. Violations may result in enforcement actions, including Regional Board orders or court orders requiring corrective action or imposing civil monetary liability, or in modification or revocation of these
waste discharge requirements by the Regional Board. (CWC Section 13261, 13263, 13265, 13267, 13268, 13300, 13301, 13304, 13340, 13350). 

  

	2.	All technical and monitoring reports submitted in accordance to this Order are being requested pursuant to Section 13267 of the California Water Code. Failure to submit reports in accordance with schedules
established by this Order or failure to submit a report of sufficient technical quality to be acceptable to the Executive Officer may subject the Dischargers to enforcement action pursuant to Section 13268 of the California Water Code.


  

	3.	 In addition to printed submittals, all reports submitted pursuant to this Order must be submitted as electronic
files in PDF format. The Regional Board has implemented a document imaging system, which is ultimately intended to reduce the need for printed report storage space and streamline the public file review process. Documents in the imaging system may be
viewed, and print copies made, by the public, during file reviews conducted at the Regional Board’s office. PDF files can be created by converting the 



  
 Exhibit H 

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original electronic files format (e.g., Microsoft Word) and/or by scanning printed text, figures, and tables. Data tables containing water level measurements, sample analytical results,
coordinates, elevations and other monitoring information shall also be provided electronically in Microsoft Excel® or similar spreadsheet format to provide an easy to review summary, and to
facilitate data computations and/or plotting that Regional Board staff may undertake during their review. Data tables submitted in electronic spreadsheet format will not be included in the case file for public review. All electronic files must be
submitted on CD or diskette and included with the print report. 

  

	4.	The Dischargers shall file with the Regional Board, Discharger Monitoring Reports, performed according to the attached Discharge Monitoring Program issued by the Executive Officer. The Executive Officer may amend the
Discharge Monitoring Program at any time, as water quality conditions warrant. 

  

	5.	The Dischargers shall submit an Annual Monitoring Report, acceptable to the Executive Officer, by January 31 of each year in accordance with the attached Discharge Monitoring Program (Attachment A). The annual
report to the Board shall cover the previous calendar year as described in Part A of the Discharge Monitoring Program. In addition to the requirements outlined in Attachment A, this report shall also include the following: location and operational
condition of all leachate and groundwater monitoring wells; groundwater and leachate potentiometric contours for each monitoring event; and tabulation of monthly leachate volumes discharged to the sanitary district along with any tabulated
analytical results (if collected by the Dischargers). Furthermore, the Dischargers shall submit Semi-Annual Monitoring Reports, in accordance with the Discharge Monitoring Program (Attachment A), no later than January 31 and July 31 of
each year; the January 31 semi-annual report may be combined with the annual report. The semi-annual report shall document any proposed maintenance activities for the upcoming monitoring period. 


REPORT DUE DATES: 
 SEMI-ANNUAL AND ANNUAL
REPORTS: 
 ANNUAL REPORT— January 31 (Each Year) 

SEMI-ANNUAL REPORT — January 31 and July 31 (Each Year) 
  

	6.	The Dischargers shall immediately notify the Board of any flooding, equipment failure, slope failure, or other change in site conditions that could impair the integrity of waste or leachate containment facilities or
precipitation and drainage control structures. 

 REPORT DUE DATE: 

Verbally Report Immediately (Written Report to follow within 5 Days) 
  

	7.	The Dischargers shall prepare and submit a Development Proposal, acceptable to the Executive Officer, for any proposed additional development at the landfill. 


COMPLIANCE DUE DATE: 
 120 days prior to
commencement of construction 

  
 Exhibit H 

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	8.	The Discharge Monitoring Program accompanying this Order (Attachment A) does not require the installation of any new wells. However, for any new wells required and installed as part of any future revised Discharge
Monitoring Program, the Dischargers shall submit a Well Installation Report, acceptable to the Executive Officer, that provides all well construction details, geologic boring logs, and well development logs for these new wells. 


COMPLIANCE DUE DATE: 
 45 days following
completion of well installation activities 
  

	9.	The Dischargers shall maintain a copy of these waste discharge requirements and these requirements shall be available to site personnel at the facility office at all times. (CWC Section 13263). 


 

	10.	The Board considers the property owner(s) to have continuing responsibility for correcting any problems that arise in the future as a result of waste discharged or related activities. 


 

	11.	The Dischargers shall permit the Regional Board or its authorized representative, upon presentation of credentials, during normal business hours: 


 

	 	a.	Immediate entry upon the premises on which wastes are located or in which any required records are kept; 

  

	 	b.	Access to copy any records required to be kept under the terms and conditions of this order; 

  

	 	c.	Inspection of any treatment equipment, monitoring equipment, or monitoring methods required by this order or by any other California State Agency; and, 


 

	 	d.	Sampling of any discharge or groundwater governed by this order. 

  

	12.	The Dischargers shall notify the succeeding owners or operators of this Order by letter in the event of any change in control, ownership of land, or waste discharge facilities presently owned or controlled by the
Dischargers. The Dischargers must notify the Executive Officer, in writing at least 30 days in advance of any proposed transfer of this Order’s responsibility and coverage to a new discharger. The notice must include a written agreement between
the existing Dischargers and the new dischargers-containing a specific date for the transfer of this order’s responsibility and coverage between the current Dischargers and the new dischargers. This agreement shall include an acknowledgment
that the existing Dischargers are liable for violations up to the transfer date and that the new dischargers are liable from the transfer date on. (CWC Sections 13267 and 13263). The request must contain the requesting entity’s full legal name,
and the address and telephone number of the persons responsible for contact with the Board. Failure to submit the request shall be considered a discharge without requirements, a violation of the California Water Code. 


  
 Exhibit H 

-15- 









	13.	This Order is subject to Board review and updating, as necessary, to comply with changing State and Federal laws, regulations, policies, or guidelines; changes in the Board’s Basin Plan; or changes in the discharge
characteristics (CWC Section 13263). 

  

	14.	Where the Dischargers becomes aware that they failed to submit any relevant facts in a Report of Waste Discharge or submitted incorrect information in a Report of Waste Discharge or in any report to the Regional Board,
it shall promptly submit such facts or information (CWC Sections 13260 and 13267). 

  

	15.	This Order does not convey any property rights of any sort or any exclusive privileges. The requirements prescribed herein do not authorize the commission of any act causing injury to persons or property, do not protect
the Dischargers from liability under Federal, State or local laws, nor do they create a vested right for the Dischargers to continue waste discharge [CWC Section 13263(g)]. 


 

	16.	Provisions of these waste discharge requirements are severable. If any provision of these requirements is found invalid, the remainder of these requirements shall not be affected. 


 

	17.	The Dischargers shall, at all times, properly operate and maintain all facilities and systems of treatment and control (and related appurtenances) which are installed or used by the Dischargers to achieve compliance
with conditions of this Order. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls including appropriate quality assurance
procedures. This provision requires the operation of backup or auxiliary facilities or similar systems only when necessary to achieve compliance with the conditions of this order [CWC Section 13263(f)]. 


 

	18.	Except for a discharge which is in compliance with these waste discharge requirements, any person who, without regard to intent or negligence, causes or permits any hazardous substance or sewage to be discharged in or
on any waters of the State, or discharged or deposited where it is, or probably will be, discharged in or on any waters of the State, shall, as soon as (a) that person has knowledge of the discharge, (b) notification is possible, and
(c) notification can be provided without substantially impeding cleanup or other emergency measures, immediately notify the Office of Emergency Services of the discharge in accordance with the spill reporting provision of the state toxic
disaster contingency plan adopted pursuant to Article 3.7 (commencing with Section 8574.7) of Chapter 7 of Division 1 of Title 2 of the Government Code, and immediately notify the State Board or the appropriate Regional Board of the discharge.
This provision does not require reporting of any discharge of less than a reportable quantity as provided for under subdivisions (f) and (g) of Section 13271 of the Water Code unless the Dischargers are in violation of a prohibition in the
applicable Water Quality Control Plan [CWC Section 13271(a)]. 


  
 Exhibit H 

-16- 









	19.	The Dischargers shall report any noncompliance that may endanger health or the environment. Any such information shall be provided orally to the Executive officer within 24 hours from the time the Dischargers becomes
aware of the circumstances. A written submission shall also be provided within five days of the time the Dischargers becomes aware of the circumstances. The written submission shall contain a description of the noncompliance and its cause; the
period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected; the anticipated time it is expected to continue and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompliance.
The Executive Officer, or an authorized representative, may waive the written report on a case-by-case basis if the oral report has been received within 24 hours [CWC
Sections 13263 and 13267]. 

  

	20.	All monitoring instruments and devices used by the Dischargers to fulfill the prescribed Discharge Monitoring Program (Attachment A) shall be properly maintained and calibrated as necessary to ensure their continued
accuracy. 

  

	21.	Unless otherwise permitted by the Regional Board Executive officer, all analyses shall be conducted at a laboratory certified for such analyses by the State Department of Health Services. The Executive Officer may allow
use of an uncertified laboratory under exceptional circumstances, such as when the closest laboratory to the monitoring location is outside the State boundaries and therefore not subject to certification. All analyses shall be required to be
conducted in accordance with the latest edition of “Guidelines Establishing Test Procedures for Analysis of Pollutants” (40 CFR, Part 1360) promulgated by the U.S. Environmental Protection Agency (CCR Title 23, Section 2230).


  

	22.	This Board’s Order No. 94-181 is hereby rescinded. 


  
 Exhibit H 

-17- 








 I, Loretta K. Barsamian, Executive Officer, do hereby certify that the foregoing is a full, complete, and correct
copy of an Order adopted by the California Regional Water Quality Control Board, San Francisco Bay Region, on August 20, 2003. 
  

	
	
	/s/ Loretta K. Barsamian 
	Loretta K. Barsamian
	Executive Officer


  

			
	Figures:	  	Figure 1—Site Location Map
		  	Figure 2—Site Plan

 Attachment: Attachment A—Discharge Monitoring Program 

  
 Exhibit H 

-18- 








 



 

  
 Exhibit H 

-19- 








 



 

  
 Exhibit H 

-20- 








 CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD SAN FRANCISCO BAY REGION 

DISCHARGE MONITORING PROGRAM 

FOR 
 WESTPORT LANDFILL

 JOHN ARRILLAGA SURVIVOR’S TRUST, PEERY 

PRIVATE INVESTMENT COMPANY, AND THE PEERY 

PUBLIC INVESTMENT COMPANY 

REDWOOD CITY, SAN MATEO COUNTY 

ORDER NO. R2-2003-0074 

CONSISTS OF 
 PART A

 AND 
 PART B








 PART A 
  

	A.	GENERAL 

 Reporting responsibilities of waste dischargers are specified in Sections
13225(a), 13267(b), 13383, and 13387(b) of the California Water Code and this Regional Board’s Resolution No.73-16. This Discharge Monitoring Program is issued in accordance with Provision C.3 of Regional
Board Order No. R2-2003-0074. 
 The principal purposes of a discharge-monitoring program are: 

 

	 	(1)	to document compliance with waste discharge requirements and prohibitions established by the Board, 

  

	 	(2)	to facilitate self-policing by the Dischargers in the prevention and abatement 

  

	 	(3)	of pollution arising from waste discharge,to develop or assist in the development of standards of performance and toxicity standards, and 


 

	 	(4)	to assist the Dischargers in complying with the requirements of Title 27. 

  

	B.	SAMPLING AND ANALYTICAL METHODS 

 Sample collection, storage, and analyses shall be
performed according to the most recent version of EPA Standard Methods and in accordance with an approved sampling and analysis plan. 

Water and waste analysis shall be performed by a laboratory approved for these analyses by the State of California. The director of the
laboratory whose name appears on the certification shall supervise all analytical work in his/her laboratory and shall sign all reports of such work submitted to the Regional Board. 

All monitoring instruments and equipment shall be properly calibrated and maintained to ensure accuracy of measurements. 

 

	C.	DEFINITION OF TERMS 

  

	1.	A grab sample is a discrete sample collected at any time. 

  

	2.	Receiving waters refers to any surface water, which actually or potentially receives surface or groundwater which passes over, through, or under waste materials or contaminated soils. In this case, the groundwater
adjacent to the landfill areas and the surface runoff from the site are considered receiving waters. 

  

	3.	Standard observations refer to: 

  

	 	a.	Receiving Waters: 

  

	 	1)	Floating and suspended materials of waste origin: presence or absence, source, and size of affected area; 









	 	2)	Discoloration and turbidity: description of color, source, and size of affected area; 

  

	 	3)	Evidence of odors, presence or absence, characterization, source, and distance of travel from source; 

  

	 	4)	Evidence of beneficial use: presence of water associated wildlife; 

  

	 	5)	Flow rate; and, 

  

	 	6)	Weather conditions: wind direction and estimated velocity, total precipitation during the previous five days and on the day of observation. 


 

	 	b.	Perimeter of the Waste Management Unit: 

  

	 	1)	Evidence of liquid leaving or entering the waste management unit, estimated size of affected area and flow rate. (Show affected area on map); 


 

	 	2)	Evidence of odors, presence or absence, characterization, source, and distance of travel from source; and, 

  

	 	3)	Evidence of erosion and/or daylighted refuse. 

  

	 	c.	The Waste Management Unit: 

  

	 	1)	Evidence of ponded water at any point on the waste management facility; 

  

	 	2)	Evidence of odors, presence or absence, characterization, source, and distance of travel from source; 

  

	 	3)	Evidence of erosion, slope movement, ground movement, and/or daylighted refuse; and, 

  

	 	4)	Standard Analysis (SA) and measurements are listed on Part B, 1., A., Table A (attached) 

  

	D.	SAMPLING, ANALYSIS, AND OBSERVATIONS 

 The Dischargers are required to perform sampling,
analyses, and observations in the following media: 
  

	1.	Groundwater per Section 20415 and 

  

	2.	Surface water per Section 20415 and per the general requirements specified in Section 20415 of Title 27 is not required. Due to the extensive Bay Mud flats surrounding the site and the hazards associated with
traversing them, sampling this medium is not feasible. Shallow groundwater is considered receiving waters at this site. 









	3.	Vadose zone per Section 2550.7(d) which is accomplished by sampling, analyzing, and recording the landfill gas concentrations at gas vent risers located at each building and at the east and southeast boundary of
the site. 

  

	E.	RECORDS TO BE MAINTAINED 

 Written reports shall be maintained by the Dischargers or
laboratory, and shall be retained for a minimum of five years. This period of retention shall be extended during the course of any unresolved litigation regarding this discharge or when requested by the Board. Such records shall show the following
for each sample: 
  

	1.	Identity of sample and sample station number; 

  

	2.	Date and time of sampling; 

  

	3.	Date and time that analyses are started and completed, and name of the personnel performing the analyses; 

  

	4.	Complete procedure used, including method of preserving the sample, and the identity and volumes of reagents used; 

  

	5.	Calculation of results; and, 

  

	6.	Results of analyses, and detection limits for each analysis. 

  

	F.	REPORTS TO BE FILED WITH THE BOARD 

  

	1.	MONITORING REPORTS 

 Written discharge monitoring reports shall be filed by the 31st day of the
month following the reporting period (the reporting period is specified in Part B of this program). In addition an annual report shall be filed as indicated in F.3 below. The reports shall comprise the following: 

 

	 	a.	Letter of Transmittal 

 A letter transmitting the essential points in each report should
accompany each report. Such a letter shall include a discussion of any requirement violations found during the last report period, and actions taken or planned for correcting the violations. If the Dischargers have previously submitted a detailed
time schedule for correcting requirement violations, a reference to the correspondence transmitting such schedule will be satisfactory. If no violations have occurred in the last report period this shall be stated in the letter of transmittal.
Monitoring reports and the letter transmitting the monitoring reports shall be signed by a principal executive officer at the level of vice president or his duly authorized representative, if such representative is responsible for the overall
operation of the facility from which the discharge originates. The letter shall contain a statement by the official, under penalty of perjury, that to the best of the signer’s knowledge the report is true, complete, and correct. 








	 	b.	Each monitoring report shall include a compliance evaluation summary. The summary shall contain: 

  

	 	1)	Concentration Limits for the Westport Landfill for all constituents of concern except ammonia, are “laboratory non-detect” based upon laboratory non-detect results for background concentrations of the listed COCs. As such, a non-statistical method is appropriate to determine whether a measurably significant release has
occurred from the Westport Landfill. Therefore, any reported laboratory detection at a point of compliance monitoring well is considered a potential release. For ammonia, a statistically significant increase shall be evaluated using a statistical
method acceptable to the Regional Board staff. Any potential release must be evaluated through additional monitoring and analyses acceptable to the Executive Officer. 


 

	 	2)	A graphic description of the direction of groundwater flow under/around the waste management unit, based upon the water level elevations obtained during the monitoring period and pertinent visual observations.


  

	 	3)	The method and time of water level measurement, the type of pump used for purging, pump placement in the well; method of purging, pumping rate, equipment and methods used to monitor field pH, temperature, and
conductivity during purging, calibration of the field equipment, results of pH, temperature, and conductivity testing, and the method of disposing of the purge water. 


 

	 	4)	Type of pump used, pump placement for sampling, a detailed description of the sampling procedure; number and description of equipment, field and travel blanks; number and description of duplicate samples; type of sample
containers and preservatives used, the date and time of sampling, the name and qualifications of the person actually taking the samples, and any other observations. 


 

	 	c.	A map or aerial photograph shall accompany each report showing observation and monitoring station locations. 

  

	 	d.	Laboratory statements of results of analyses specified in Part B, Table A must be included in each report. The director of the laboratory whose name appears on the laboratory certification shall supervise all analytical
work in his/her laboratory and shall sign all reports of such work submitted to the Board. 

  

	 	1)	The methods of analyses and detection limits must be appropriate for the expected concentrations. Specific methods of analyses must be identified. If methods other than EPA approved methods or Standard Methods are used,
the exact methodology must be submitted for review and approved by the Executive Officer prior to use. 









	 	2)	In addition to the results of the analyses, laboratory quality assurance/quality control (QA/QC) information must be included in the monitoring report. The laboratory QA/QC information should include the method,
equipment and analytical detection limits; the recovery rates; an explanation for any recovery rate that is less than 80% of the specific laboratory recovery limits; the results of equipment and method blanks; the results of spiked and surrogate
samples; the frequency of quality control analysis; and the name and qualifications of the person(s) performing the analyses. 

  

	 	e.	An evaluation of the effectiveness of the leachate monitoring or control facilities, which includes an evaluation of leachate buildup within the disposal units, a potentiometric surface map, a summary of leachate
volumes removed from the units, and a discussion of the leachate disposal methods utilized. 

  

	 	f.	A summary and certification of completion of all standard observations for the waste management unit, the perimeter of the waste management unit, and the receiving waters. 


 

	2.	CONTINGENCY REPORTING 

 A report shall be made by telephone of any seepage from the disposal
area immediately after it is discovered. A written report shall be filed with the Board within five working days thereafter. This report shall contain the following information: 

 

	 	1)	A map showing the location(s) of discharge; 

  

	 	2)	Approximate flow rate; 

  

	 	3)	Nature of effects; i.e. all pertinent observations and analyses; and 

  

	 	4)	Corrective measures underway, proposed, or as specified in the Waste Discharge Requirements. 

  

	3.	REPORTING 

 By January 31 of each year the Dischargers shall submit an annual report to the
Board covering the previous calendar year. This report shall contain: 
  

	 	a.	Tabular summaries of the historical and recent monitoring data obtained during the previous year; the report should be accompanied by a compact disk (CD), MS-EXCEL format,
tabulating the year’s data. 

  

	 	b.	A comprehensive discussion of the compliance record, and the corrective actions taken or planned which may be needed to bring the Dischargers into full compliance with the waste discharge requirements.


  

	 	c.	A written summary of the groundwater analyses indicating any change in the quality of the groundwater. 









	 	d.	An evaluation of the effectiveness of the leachate monitoring/ control facilities, which includes an evaluation of leachate buildup within the disposal units, a summary of leachate volumes removed from the units, and a
discussion of the leachate disposal methods utilized. 

  

	4.	WELL LOGS 

 Although no new wells are required at the time of the adoption of this Order, if
future conditions require the installation of additional monitoring wells, a boring log and a monitoring well construction log shall be submitted for each new sampling well established for this monitoring program, as well as a report of inspection
or certification that each well has been constructed in accordance with the construction standards of the Department of Water Resources. These shall be submitted within 45 days after well installation. 







 PART B 
  

	 	1.	DESCRIPTIONS OF OBSERVATION STATIONS AND SCHEDULE OF OBSERVATIONS. 

  

	A.	GROUNDWATER AND LEACHATE MONITORING 

 Report Semi-annually 

 

	1.	Groundwater: Groundwater samples shall be analyzed as outlined in Table A (Attached). Groundwater elevations shall be recorded quarterly and reported semi-annually in the July and January semi-annual monitoring reports.


 Monitoring Points: 
  

			
	 Groundwater
	    	P-8, P-7, P3-R, MW-4, MW-4P, K-4, P5-1R, MW3-2R, MW-3, DW-1, DW-2, DW-3, UPG-1, UPG-2

 MW-4 and MW-4P are in close
proximity, therefore only one well needs to be monitored for the parameters listed in Table A. The other well (MW-4P) is intended as a piezometer well and shall be monitored for water elevation only. MW-4 is considered a POC well. 
 Wells UPG-1, UPG-2, and MW-3 shall be monitored for water elevation only. 
  

	2.	Leachate samples shall be analyzed once every five years (First leachate chemical analysis due for the January through July 2003 semi-annual monitoring event) for the parameters outlined in Table A (Attached). Leachate
water elevations shall be recorded quarterly and reported semi¬annually in the July and January semi-annual monitoring reports. 


Monitoring Points: 
  

			
	 Leachate-Impacted Groundwater
	    	S-2, S-3A, S-4A, S-5, P-2A, P3-PZ, P-4, P5-1-PZ, P-6, K3-R, K3-PZ*, MW3-1R, PZ-2*, PZ-2P, PZ-3A*, PZ-3B*, PZ-3C

 All wells shall be monitoring for water elevation. All wells shall be monitored for chemical constituents
outlined in Table A (Attached) once every 5 Years. Wells denoted with an asterisk (*) shall be monitored for leachate elevations only. 
  

	B.	FACILITIES MONITORING 

 The Dischargers shall inspect all facilities to ensure proper and
safe operation once per quarter and report semi-annually. 







 MONITORING REPORT SCHEDULE 

Reports shall be due on the following schedule: 
  

			
	 First semi-annual report:
	  	 July 31 of each year

	 Second semi-annual Report:
	  	 January 31 of each year

	 Annual Report:
	  	 Combined with the second semi-annual report, due January 31 of each
year


 I, Loretta K. Barsamian, Executive Officer, hereby certify that the foregoing Self-Monitoring Program: 

 

	1.	Has been developed in accordance with the procedures set forth in this Board’s Resolution No. 73-16 in order to obtain data and document compliance with waste discharge
requirements established in this Board’s Order No. R2-2003-0074 

  

	2.	Is effective on the date shown below. 

  

	3.	May be reviewed or modified at any time subsequent to the effective date, upon written notice from the Executive Officer. 

  

	
	/s/ Loretta K. Barsamian
	Loretta K. Barsamian
	Executive Officer

 Date Ordered: August 20, 2003 

Attachment: Table A — Schedule for Sampling, Measurement, and Analysis 







 Table A—Discharge Monitoring Program, List of Analytical Parameters-Leachate and Groundwater 

 

					
	 Field/Inorganic Parameters
	  	 Method1
	  	 Frequency

	 pH
	  	Field	  	Semi-Annual
	 Electrical conductivity
	  	Field	  	Semi-Annual
	 Groundwater Elevations
	  	Field	  	Quarterly 2
	 Leachate Elevations
	  	Field	  	Quarterly 2
	 Total Ammonia
	  	350.3	  	Semi-Annual
	 Ammonia (un-ionized)
	  	350.1	  	Semi-Annual

  

					
	 Organics/ PCBs
	  	 Methods
	  	 Frequency

	 Volatile Organic Compounds (including MTBE)
	  	8260	  	Semi-Annual 3,4
	 Semi-Volatile Organic Compounds
	  	8270	  	Semi-Annual 3,4
	 PCBs
	  	8082	  	Semi-Annual 3,4

 Notes: 
  

	1.	Test methods per Methods for Chemical Analysis of Water and Waste, USEPA 600/4/79/029, revised March 1983, or Test Methods for Evaluating Solid Wastes: Physical/Chemical Methods, USEPA
SW-846, 3rd edition, November 1986 and revisions. Board staff may consider alternative EPA and/or Standard Methods, with comparable MDLs and PQLs, for use at the Westport Landfill. 


 

	2.	Analyzed quarterly and reported semi-annually. 

  

	3.	Analysis of groundwater (wells located outside the waste management unit) shall be conducted during the 2003 calendar year. Any identified impacted groundwater monitoring wells shall be analyzed semi-annually
thereafter. All other groundwater-monitoring wells shall be sampled annually, thereafter. 

  

	4.	Analysis of existing leachate-impacted groundwater wells within the WMU shall be conducted during the 2003 calendar year and once every 5 years, thereafter. 








 EXHIBIT I 

HAZARDOUS MATERIALS 
  

			
	 Substance
	  	Maximum
Quantity
	 Acetic Acid
	  	2.0 L
	 Acetone
	  	500 mL
	 Acetonitrile
	  	1.0 L
	 Ammonium Suflate
	  	500 g
	 Biotin
	  	1.0 g
	 Boric Acid
	  	500 g
	 Calcium Chloride Solution
	  	100 mL
	 Caps Buffer
	  	200 g
	 Carbamoylcholine Chloride
	  	10 g
	 Carbon Dioxide (Co2 Gas)
	  	15 cylinders
	 Casein Bovine From Milk
	  	500 g
	 Chaps
	  	5.0 g
	 Citric Acid Anhydrous
	  	2.0 kg
	 Citric Acid Monohydrate
	  	1.0 kg
	 Cyclic Alkyl Amino Carbene
	  	50 g
	 Cystamine Dihydrochloride
	  	25 g
	 D-(+) Galactose
	  	100 g
	 Dextran (From Leuconostoc Suspended Particulate Phase)
	  	25 g
	 Dextran Sulfate Sodium Salt
	  	50 g
	 Dextrose Anhydrous
	  	1.0 kg
	 Dimethyl Sulfoxide
	  	1.0 L
	 Dimethylbenzene
	  	8.0 L
	 Dimethylformamide
	  	100 mL
	 Dithiothreitol Solution
	  	250 mL
	 D-Mannitol
	  	600 g
	 Ethanol
	  	40 L
	 Ethylenediaminetetraacetic Acid
	  	400 mL
	 Folic Acid
	  	5.0 g
	 Formalin 10%
	  	4.0 L
	 Fucose
	  	5.0 g
	 Gelatin Type A
	  	500 g
	 Glutaraldehyde
	  	70 mL
	 Glycerol
	  	1.0 L
	 Glycine
	  	3.0 kg
	 Guanidine Hcl
	  	500 g
	 Hepes
	  	500 g
	 Hydrazine Sulfate Salt
	  	100 g
	 Hydrochloric Acid (36M)
	  	2.0 L


  
 Exhibit I 

-1- 









			
	 Substance
	  	Maximum
Quantity
	 Hydrochloric Acid Solution (1M)
	  	4.0 L
	 Hydrochloric Acid Solution (6M)
	  	2.0 L
	 Hydroxylamine
	  	100 mL
	 Imidazole
	  	2.5 kg
	 Iron(Iii) Chloride Hexahydrate
	  	500 g
	 Isopentane
	  	4.0 L
	 Isopropanol
	  	8.0 L
	 L-Arginine
	  	5.0 kg
	 L-Arginine Hydrochloride
	  	5.0 kg
	 L-Cysteine
	  	200 g
	 L-Glutamic Acid
	  	100 g
	 L-Histidine
	  	4.0 kg
	 L-Histidine Hydrochloride
	  	3.0 kg
	 Magnesium Calcium Tetrahydrate
	  	100 g
	 Magnesium Chloride Solution
	  	100 mL
	 Magnesium Sulfate Anhydrous
	  	500 g
	 Maltose
	  	1.0 kg
	 Man nopyranside
	  	100 g
	 Mercaptoethanol
	  	100 mL
	 Mes Hydrate
	  	250 g
	 Mes Monohydrate
	  	100 g
	 Methanol
	  	4.0 L
	 Methylbenzene (Toluene)
	  	500 mL
	 Myo-I nosito I
	  	50 g
	 Nickel Sulfate
	  	200 g
	 Nitrogen (Liquid N2)
	  	90 gallons
	 Paraformaldehyde 16%
	  	2.0 L
	 Phenylmethanesulfonyl Fluoride
	  	5.0 g
	 Phosphorous Acid
	  	1.0 L
	 Piperazine
	  	25 g
	 P-Nitrophenol Solution
	  	100 mL
	 Poly(Glu, Tyr) Sodium Salt
	  	10 mg
	 Polyisoprene
	  	250 g
	 Polysorbate 20
	  	4.0 L
	 Polysorbate 80
	  	400 mL
	 Potassium Acetate
	  	50 g
	 Potassium Phosphate
	  	1.0 kg
	 Propylene Glycol
	  	500 mL
	 Quantipro Kit
	  	1 Kit
	 Sephadex G25
	  	500 g
	 Sigmacote
	  	100 mL
	 Sodium Acetate
	  	4.0 kg
	 Sodium Azide
	  	500 g


  
 Exhibit I 

-2- 









					
	 Substance
	  	Maximum
Quantity	 
	 Sodium Bicarbonate
	  	 	500 g	 
	 Sodium Carbonate
	  	 	1.5 kg	 
	 Sodium Chloride
	  	 	5.0 kg	 
	 Sodium Citrate Tribasic
	  	 	1.0 kg	 
	 Sodium Formate
	  	 	500 g	 
	 Sodium Hydroxide
	  	 	12 kg	 
	 Sodium Phosphate Dibasic
	  	 	3.0 kg	 
	 Sodium Phosphate Monobasic
	  	 	5.0 kg	 
	 Sodium Succinate Dibasic Hexahydrate
	  	 	1.0 kg	 
	 Sodium Sulfate
	  	 	1.5 kg	 
	 Sorbitol
	  	 	100 g	 
	 Succinic Acid
	  	 	2.5 kg	 
	 Sucrose
	  	 	5.0 kg	 
	 Sulfuric Acid 95%
	  	 	1.0 L	 
	 Tetrahydrofuran
	  	 	1.0 L	 
	 Tolonium Chloride
	  	 	50 g	 
	 Treha lose
	  	 	25 g	 
	 Trithanolamione
	  	 	500 mL	 
	 Triton X-100
	  	 	250 mL	 
	 Trizma Base
	  	 	1.0 kg	 
	 Turbidity Standard
	  	 	1.0 L	 
	 Urea
	  	 	2.0 kg	 
	 Zinc Sulfate Heptahydrate
	  	 	500 g	 


  
 Exhibit I 

-3- 








 EXHIBIT J 

FORM OF LETTER OF CREDIT 

____________, 20__ 
 IRREVOCABLE STANDBY LETTER OF
CREDIT NUMBER ____________ 
 ISSUE DATE: ____________ 

ISSUING BANK: 
 SILICON VALLEY BANK 

3003 TASMAN DRIVE 
 2ND FLOOR, MAIL SORT HF210 

SANTA CLARA, CALIFORNIA 95054 
 BENEFICIARY: 

WESTPORT OFFICE PARK, LLC 
 4 EMBARCADERO CENTER, SUITE 2700 

SAN FRANCISCO, CA 94111 
 ATTENTION: PRISA II ASSET MANAGER 

APPLICANT: 
 ALLAKOS INC 

75 SHOREWAY ROAD, SUITE A 
 SAN CARLOS, CA 94070 

AMOUNT: USD802,449.54 (EIGHT HUNDRED TWO THOUSAND FOUR HUNDRED FORTY NINE AND 54/100 U.S. DOLLARS) 

EXPIRATION DATE: ____________, 2018 [ONE YEAR FROM ISSUANCE DATE] 

LOCATION: SANTA CLARA, CALIFORNIA 
 LADIES AND GENTLEMEN: 

WE HEREBY ESTABLISH OUR IRREVOCABLE STANDBY LETTER OF CREDIT NO. SVBSF ____________ IN FAVOR OF WESTPORT OFFICE PARK, LLC, A CALIFORNIA LIMITED
LIABILITY COMPANY (`BENEFICIARY’), AND FOR THE ACCOUNT OF ALLKOS INC, A DELAWARE CORPORATION, (‘APPLICANT’ ), FOR AN AGGREGATE AMOUNT OF ____________ U.S. DOLLARS ($________), EFFECTIVE IMMEDIATELY AND EXPIRING AT 3003 TASMAN DRIVE,
SANTA CLARA, CA 95054, 5:00PM CALIFORNIA TIME ON ____________, 2018__. 

  
 Exhibit J 

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 PAYMENTS UNDER THIS STANDBY LETTER OF CREDIT ARE AVAILABLE AGAINST YOUR SIGHT DRAFT(S) DRAWN ON
US, IN THE FORM OF EXHIBIT “A“ATTACHED HERETO, SIGNED BY AN AUTHORIZED SIGNATORY OF THE BENEFICIARY AND THE ORIGINAL OF THIS CREDIT, PRESENTED TO OUR OFFICE, LOCATED AT SILICON VALLEY BANK, 3003 TASMAN DRIVE, 2ND FLOOR, MAIL SORT HF210,
SANTA CLARA, CALIFORNIA 95054, ATTENTION: GLOBAL TRADE SERVICES—STANDBY LETTER OF CREDIT DEPARTMENT. 
 PARTIAL DRAWINGS AND MULTIPLE
PRESENTATIONS ARE PERMITTED UNDER THIS LETTER OF CREDIT. 
 PAYMENT AGAINST CONFORMING PRESENTATIONS HEREUNDER PRIOR TO 10:00 A.M.
CALIFORNIA TIME, ON A BUSINESS DAY SHALL BE MADE BY BANK DURING NORMAL BUSINESS HOURS OF THE BANK’S OFFICE ON THE NEXT SUCCEEDING BUSINESS DAY. PAYMENT AGAINST CONFORMING PRESENTATIONS HEREUNDER AFTER 10:00 A.M. CALIFORNIA TIME, ON A BUSINESS
DAY SHALL BE MADE BY BANK DURING NORMAL BUSINESS HOURS OF THE BANK’S OFFICE ON THE SECOND SUCCEEDING BUSINESS DAY. 
 AS USED IN THIS
LETTER OF CREDIT, “BUSINESS DAY” SHALL MEAN ANY DAY OTHER THAN A SATURDAY, SUNDAY OR A DAY ON WHICH BANKING INSTITUTIONS IN THE STATE OF CALIFORNIA ARE AUTHORIZED OR REQUIRED BY LAW TO CLOSE. 

THIS LETTER OF CREDIT SHALL CONSTITUTE A DIRECT DRAW LETTER OF CREDIT AND YOU SHALL NOT BE REQUIRED TO GIVE NOTICE TO OR MAKE ANY PRIOR DEMAND
OR PRESENTMENT TO APPLICANT WITH RESPECT TO THE PAYMENT OF ANY SUM AS TO WHICH A DRAW IS MADE HEREUNDER. 
 WE HEREBY ENGAGE WITH YOU THAT
DRAFT(S) DRAWN UNDER AND IN COMPLIANCE WITH THE TERMS OF THIS LETTER OF CREDIT WILL BE DULY HONORED UPON PRESENTATION TO THE AFORESAID OFFICE ON OR BEFORE THE EXPIRATION DATE OF THIS LETTER OF CREDIT OR ANY AUTOMATICALLY EXTENDED EXPIRATION DATE.

 THIS LETTER OF CREDIT SHALL BE AUTOMATICALLY EXTENDED FOR AN ADDITIONAL PERIOD OF ONE YEAR, WITHOUT AMENDMENT, FROM THE PRESENT OR EACH
FUTURE EXPIRATION DATE UNLESS AT LEAST SIXTY ( 60) DAYS PRIOR TO THE THEN CURRENT EXPIRATION DATE WE SEND YOU A NOTICE BY REGISTERED MAIL OR OVERNIGHT COURIER SERVICE AT THE ABOVE ADDRESS (OR ANY OTHER ADDRESS INDICATED BY YOU, IN A WRITTEN NOTICE
TO US THE RECEIPT OF WHICH WE HAVE ACKNOWLEDGED, AS THE ADDRESS TO WHICH WE SHOULD SEND SUCH NOTICE) THAT THIS LETTER OF CREDIT WILL NOT BE EXTENDED BEYOND THE CURRENT EXPIRATION DATE. IN NO EVENT SHALL THIS LETTER OF CREDIT BE AUTOMATICALLY
EXTENDED BEYOND ____________, 2025 [INSERT A FINAL EXPIRATION DATE]. IN THE EVENT OF SUCH NOTICE OF NON-EXTENSION, YOU MAY DRAW HEREUNDER WITH A DRAFT STATED ABOVE AND ACCOMPANIED BY THIS ORIGINAL LETTER OF
CREDIT AND AMENDMENT(S), IF ANY. 

  
 Exhibit J 

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 THE OBLIGATION OF SILICON VALLEY BANK UNDER THIS LETTER OF CREDIT IS THE INDIVIDUAL OBLIGATION OF
SILICON VALLEY BANK, AND IS IN NO WAY CONTINGENT UPON REIMBURSEMENT WITH RESPECT THERETO OR UPON OUR ABILITY TO PERFECT ANY LIEN, SECURITY INTEREST OR ANY OTHER REIMBURSEMENT. 

THIS LETTER OF CREDIT SETS FORTH IN FULL THE TERMS OF OUR UNDERTAKING, AND SUCH UNDERTAKING SHALL NOT IN ANY WAY BE MODIFIED OR AMPLIFIED BY
REFERENCE TO ANY DOCUMENT, INSTRUMENT OR AGREEMENT REFERRED TO HEREIN OR IN WHICH THIS LETTER OF CREDIT IS REFERRED TO OR TO WHICH THIS LETTER OF CREDIT RELATES, AND ANY SUCH REFERENCE SHALL NOT BE DEEMED TO INCORPORATE HEREIN BY REFERENCE ANY
DOCUMENT, INSTRUMENT OR AGREEMENT. 
 THIS LETTER OF CREDIT IS TRANSFERABLE ONE OR MORE TIMES WITHOUT COST TO BENEFICIARY, BUT IN EACH
INSTANCE ONLY TO A SINGLE BENEFICIARY AS TRANSFEREE AND ONLY UP TO THE THEN AVAILABLE AMOUNT, IN FAVOR OF ANY NOMINATED TRANSFEREE (“TRANSFEREE”), ASSUMING SUCH TRANSFER TO SUCH TRANSFEREE WOULD BE IN COMPLIANCE WITH THEN APPLICABLE LAW
AND REGULATION, INCLUDING BUT NOT LIMITED TO THE REGULATIONS OF THE U. S. DEPARTMENT OF TREASURY AND U. S. DEPARTMENT OF COMMERCE. AT THE TIME OF TRANSFER, THE ORIGINAL LETTER OF CREDIT AND ORIGINAL AMENDMENT(S), IF ANY, MUST BE SURRENDERED TO US AT
OUR ADDRESS INDICATED IN THIS LETTER OF CREDIT TOGETHER WITH OUR TRANSFER FORM ATTACHED HERETO AS EXHIBIT “B” DULY EXECUTED. APPLICANT SHALL PAY OUR TRANSFER FEE OF Vs OF 1% OF THE TRANSFER AMOUNT (MINIMUM US$250.00) UNDER THIS LETTER OF
CREDIT. PAYMENT OF ANY TRANSFER FEES AND/OR ANY TRANSFER COST SHALL NOT BE A CONDITION PRECEDENT TO TRANSFER. 
 IF ANY INSTRUCTIONS
ACCOMPANYING A DRAWING UNDER THIS LETTER OF CREDIT REQUEST THAT PAYMENT IS TO BE MADE BY TRANSFER TO YOUR ACCOUNT WITH ANOTHER BANK, WE WILL ONLY EFFECT SUCH PAYMENT BY FED WIRE TO A U.S. REGULATED BANK, AND WE AND/OR SUCH OTHER BANK MAY RELY ON AN
ACCOUNT NUMBER SPECIFIED IN SUCH INSTRUCTIONS EVEN IF THE NUMBER IDENTIFIES A PERSON OR ENTITY DIFFERENT FROM THE INTENDED PAYEE. 
 THIS
LETTER OF CREDIT IS SUBJECT TO THE INTERNATIONAL STANDBY PRACTICES (ISP98), INTERNATIONAL CHAMBER OF COMMERCE, PUBLICATION NO. 590 AND AS TO MATTERS NOT GOVERNED BY THE ISP98, SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF CALIFORNIA U.S.A. 

  
 Exhibit J 

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	VERY TRULY YOURS,
	
	  

	AUTHORIZED SIGNATURE


  

  
 Exhibit J 

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 EXHIBIT A 

 

 

DATE: ____________     REF. NO. ____________ 

AT SIGHT OF THIS DRAFT 
 PAY TO THE ORDER OF
_________________________________ US$____________ 
 US DOLLARS ________________________________________________ 

DRAWIN UNDER SILICON VALLEY BANK, SANTA CLARA, CALIFORNIA, STANDBY LETTER OF CREDIT NUMBER NO. ________________________ DATED ____________

  

					
	 TO:    SILICON VALLEY BANK

          3003 TASMAN DRIVE
	  		  	
	           SANTA CLARA, CA 95054

 
	  	 (BENEFICIARY’S NAME)
	  	
		  	Authorized Signature	  	

 

 GUIDELINES TO PREPARE THE DRAFT 

 

	1.	DATE: ISSUANCE DATE OF DRAFT. 


	2.	REF. NO.: BENEFICIARY’S REFERENCE NUMBER, IF ANY. 


	3.	PAY TO THE ORDER OF: NAME OF BENEFICIARY AS INDICATED IN THE L/C (MAKE SURE BENEFICIARY ENDORSES IT ON THE REVERSE SIDE). 


	4.	US$: AMOUNT OF DRAWING IN FIGURES. 


	5.	USDOLLARS: AMOUNT OF DRAWING IN WORDS. 


	6.	LETTER OF CREDIT NUMBER: SILICON VALLEY BANK’S STANDBY L/C NUMBER THAT PERTAINS TO THE DRAWING. 


	7.	DATED: ISSUANCE DATE OF THE STANDBY L/C. 


	8.	BENEFICIARY’S NAME: NAME OF BENEFICIARY AS INDICATED IN THE L/C. 


	9.	AUTHORIZED SIGNATURE: SIGNED BY AN AUTHORIZED SIGNER OF BENEFICIARY. 

 IF YOU HAVE QUESTIONS RELATED TO THIS
STANDBY LETTER OF CREDIT PLEASE CONTACT US AT ____________. 

  
 Exhibit J 

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 EXHIBIT “B” 

TRANSFER FORM 
 DATE: ____________ 

 

			
	TO:    SILICON VALLEY BANK	  	
	          3003 TASMAN DRIVE	  	RE: IRREVOCABLE STANDBY LETTER OF CREDIT
	          SANTA CLARA, CA 95054	  	NO. ____________ ISSUED BY
	          ATTN:INTERNATIONAL DIVISION.	  	SILICON VALLEY BANK, SANTA CLARA
	          STANDBY LETTERS OF CREDIT	  	UC AMOUNT: ____________

 GENTLEMEN: 
 FOR VALUE RECEIVED,
THE UNDERSIGNED BENEFICIARY HEREBY IRREVOCABLY TRANSFERS TO: 
  
  

(NAME OF TRANSFEREE) 
  

 
 (ADDRESS) 

ALL RIGHTS OF THE UNDERSIGNED BENEFICIARY TO DRAW UNDER THE ABOVE LETTER OF CREDIT UP TO ITS AVAILABLE AMOUNT AS SHOWN ABOVE AS OF THE DATE OF THIS TRANSFER.

 BY THIS TRANSFER, ALL RIGHTS OF THE UNDERSIGNED BENEFICIARY IN SUCH LETTER OF CREDIT ARE TRANSFERRED TO THE TRANSFEREE. TRANSFEREE SHALL HAVE THE SOLE
RIGHTS AS BENEFICIARY THEREOF, INCLUDING SOLE RIGHTS RELATING TO ANY AMENDMENTS, WHETHER INCREASES OR EXTENSIONS OR OTHER AMENDMENTS, AND WHETHER NOW EXISTING OR HEREAFTER MADE. ALL AMENDMENTS ARE TO BE ADVISED DIRECTLY TO THE TRANSFEREE WITHOUT
NECESSITY OF ANY CONSENT OF OR NOTICE TO THE UNDERSIGNED BENEFICIARY. 
 THE ORIGINAL OF SUCH LETTER OF CREDIT IS RETURNED HEREWITH, AND WE ASK YOU TO
ENDORSE THE TRANSFER ON THE REVERSE THEREOF, AND FORWARD IT DIRECTLY TO THE TRANSFEREE WITH YOUR CUSTOMARY NOTICE OF TRANSFER. 

 


	
	 
	SIGNATURE AUTHENTICATED
	 
	The names(s), title(s), and signature(s) conform to that/those on file with us for the company and the
signature(s) is/are authorized to execute this instrument.
	 
	 
	(Name of Bank)
	 
	 
	(Address of Bank)
	 
	 
	(City, State, Zip Code)
	 
	 
	(Print Authorized Name and Title)
	 
	 
	(Authorized Signature)
	 
	 
	 (Telephone Number)

 


 

  

			
	 (BENEFICIARY’S
NAME) 



			
	By:	  	 


			
		
	Printed Name:	  	 


			
		
	Title:	  	 

 
 


  
 Exhibit J 

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 FIRST AMENDMENT TO LEASE 

This First Amendment to Lease (the “Amendment”) is entered into as of March 15, 2018, by and between WESTPORT OFFICE PARK, LLC,
a California limited liability company (“Landlord”), and ALLAKOS INC., a Delaware corporation (“Tenant”), with respect to the following facts and circumstances: 

A.    Landlord and Tenant have previously entered into that certain Lease Agreement dated as of January 4, 2018 (the
“Original Lease”), of certain premises more particularly described in the Original Lease. Capitalized terms used and not otherwise defined herein shall have the meanings given those terms in the Original Lease. 

B.    Landlord and Tenant desire to amend the Original Lease on the terms and conditions provided herein. 

IT IS, THEREFORE, agreed as follows: 

1.    The description of the Premises in the Basic Lease Information of the Original Lease is hereby deleted in its
entirety and replaced with the following: 
 “Premises: The second floor of the Building, containing approximately 25,136 square feet
of rentable area, outlined in Exhibit B to this Lease.” 
 2.    The description of the Base Rent in
the Basic Lease Information of the Original Lease is hereby deleted in its entirety and replaced with the following: 

“Base Rent: 
  

					
	 Period

(In Months)
	  	 Annual

Base Rent
	  	 Monthly

Base Rent

			
	01 — 09	  	N/A	  	$99,287.20 (Abated*)
	10 — 12	  	N/A	  	$99,287.20
	13 — 24	  	$1,227,189.84	  	$102,265.82
	25 — 36	  	$1,264,005.48	  	$105,333.79
	37 — 48	  	$1,301,925.60	  	$108,493.80
	49 — 60	  	$1,340,983.44	  	$111,748.62
	61 —72	  	$1,381,212.96	  	$115,101.08
	73 — 84	  	$1,422,649.32	  	$118,554.11
	85 — 96	  	$1,465,328.76	  	$122,110.73
	97 — 108	  	$1,509,288.60	  	$125,774.05
	109 — 120	  	$1,554,567.36	  	$129,547.28
	121 — 129	  	N/A	  	$133,433.69

  

	*	 As an inducement to Tenant entering into this Lease, so long as no Monetary Default or other material Event of
Default shall have occurred and be continuing under this Lease, Base Rent in the amount of $99,287.20 per month shall be abated for the first nine (9) months 



  
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commencing as of the Commencement Date, or if the Commencement Date is other than the first day of a calendar month, commencing as of the first day of the first full calendar month of the Term.
During such abatement period, Tenant shall still be responsible for the payment of all of its other monetary obligations under the Lease.” 


3.    The description of the Tenant’s Building Percentage in the Basic Lease Information of the Original Lease is
hereby deleted in its entirety and replaced with the following: 
 “Tenant’s Building Percentage: 49.83%.” 

4.    The description of the Tenant’s Common Area Building Percentage in the Basic Lease Information of the Original
Lease is hereby deleted in its entirety and replaced with the following: 
 “Tenant’s Common Area Building Percentage:
2.52%.” 
 5.    Exhibit B to the Original Lease is hereby deleted in its entirety and replaced with Exhibit B
attached hereto. 
 6.    The fourth sentence of Section 3.1 of Exhibit C to the Original Lease is hereby deleted
in its entirety and replace with the following: 
 “Landlord shall pay for the cost of the design and construction of the Tenant
Improvements in an amount up to, but not exceeding, $1,385,670.00 (the “Allowance”).” 
 7.    In the
event this Amendment is executed after the Commencement Date and Tenant has paid Base Rent and amounts payable by Tenant pursuant to Article 5 of the Original Lease that are different than the amounts payable for the period after the Commencement
Date pursuant to this Amendment, Landlord and Tenant shall promptly make an appropriate adjustment to reflect that payment of those different amounts, and any net amount due Tenant shall be credited against Tenant’s future rent obligations
under the Lease and any net amount due Landlord shall be payable within thirty (30) days after demand. 

8.    Tenant represents, warrants and covenants to Landlord that, as of the date hereof and throughout the term of the
Lease, Tenant is not, and is not entering into the Lease on behalf of, (i) an employee benefit plan, (ii) a trust holding assets of such a plan or (iii) an entity holding assets of such a plan. Notwithstanding any terms to the
contrary in the Lease or this Amendment, in no event may Tenant assign or transfer its interest under the Lease to a third party who is, or is entering into the Lease on behalf of, (i) an employee benefit plan, (ii) a trust holding assets
of such a plan or (iii) an entity holding assets of such a plan if such transfer would could cause Landlord to incur any prohibited transaction excise tax penalties or other materially adverse consequences under the Employee Retirement Income
Security Act of 1974, as amended, Section 4975 of the Internal Revenue Code of 1986, as amended or similar law. 

9.    Except as specifically provided herein, the terms and conditions of the Original Lease as amended hereby are
confirmed and continue in full force and effect. This Amendment shall be binding on the heirs, administrators, successors and assigns (as the case may be) of the parties hereto. 

  
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 IN WITNESS WHEREOF, this Amendment has been executed as of the date first above written. 

 

			
	TENANT:
	
	ALLAKOS INC., a Delaware corporation
		
	By:	 	 /s/ Adam Tomasi

		
		 	 Adam Tomasi, CFO

		 	[Printed Name and Title]
		
	By:	 	  

		
		 	  

		 	[Printed Name and Title]
	
	If Tenant is a corporation, this instrument must be executed by the chairman of the board, the president or any vice president and the secretary, any assistant secretary, the chief financial officer or any assistant
financial officer or any assistant treasurer of such corporation, unless the bylaws or a resolution of the board of directors shall otherwise provide, in which case the bylaws or a certified copy of the resolution, as the case may be, must be
attached to this instrument.



  
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	LANDLORD:
	
	 WESTPORT OFFICE PARK, LLC,
 a
California limited liability company

		
	By:	 	PR II LHC Bayshore Technology Center, LLC, a Delaware limited liability company, its managing member
			
		 	By:	 	PRISA II LHC, LLC, a Delaware limited liability company, its sole member
				
		 		 	By:	 	 /s/ Jeffrey D. Mills

				
		 		 	Name:	 	 Jeffrey D. Mills

				
		 		 	Title:	 	 Vice President




  
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 EXHIBIT B 

PREMISES 
  
 



 

  
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