OFFICE LEASE

Exhibit 99.1

This Office Lease (this “Lease”), dated as of the date set forth in Section 1.1, is made by and between TRIZEC SORRENTO TOWERS, LLC, a Delaware limited liability company (“Landlord”), and OPTIMER PHARMACEUTICALS, INC., a Delaware corporation (“Tenant”). The following exhibits are incorporated herein and made a part hereof: Exhibit A (Outline of Premises); Exhibit B (Work Letter); Exhibit B-1 (Approved Space Plan); Exhibit C (Form of Confirmation Letter); Exhibit D (Rules and Regulations); Exhibit E (Judicial Reference); and Exhibit F (Additional Provisions).

1	BASIC LEASE INFORMATION

	1.1		Date:		August 18, 2008

	1.2.		Premises

		1.2.1		“Building”:	0000 Xxxx Xxxxxxxx Xxxxx, Xxx Xxxxx, Xxxxxxxxxx 00000, commonly known as Sorrento Towers North.

		1.2.2		“Premises”:	Subject to Section 2.1.1, 7,663 rentable square feet of space located on the 2^nd floor of the Building and commonly known as Suite 250, the outline and location of which is set forth in Exhibit A. If the Premises includes any floor in its entirety, all corridors and restroom facilities located on such floor shall be considered part of the Premises.

		1.2.3		“Property”:	The Building, the parcel(s) of land upon which it is located, and, at Landlord’s discretion, any parking facilities and other improvements serving the Building and the parcel(s) of land upon which such parking facilities and other improvements are located.

		1.2.4		“Project”:	The Property or, at Landlord’s discretion, any project containing the Property and any other land, buildings or other improvements.

	1.3	Term

		1.3.1		Term:	The term of this Lease (the “Term”) shall commence on the Commencement Date and end on the Expiration Date (or any earlier date on which this Lease is terminated as provided herein).

	1.3.2	“Commencement Date”:	The earlier of (i) the date on which Tenant first commences to conduct business in the Premises, or (ii) the date on which the Premises is Ready for Occupancy (defined in Exhibit B), which is anticipated to be August 1, 2008. Notwithstanding anything to the contrary in this Lease, if the Premises is not Ready for Occupancy on or before November 1, 2008, then Tenant may terminate this Lease by delivering written notice to Landlord at any time prior to the date on which the Premises is Ready for Occupancy. Provided that Tenant and its agents, employees and contractors do not materially interfere with the Landlord’s performance of Tenant Improvements (defined in Exhibit B), Landlord shall allow and shall require the Contractor (defined in Exhibit B) to allow, Tenant and Tenant’s agents, employees and contractors access to the Building and Premises upon mutual lease execution, so that Tenant may install its furniture, trade fixtures, data and telecommunications wiring and equipment, photography equipment and other business equipment in the Premises. Prior to Tenant’s entry into the Building, Tenant shall arrange a schedule with Landlord and the Contractor in order to coordinate the timing of Tenant’s entry with the actions of Contractor. Prior to such entry, Tenant or its agents and contractors (as applicable) shall provide evidence of insurance reasonably satisfactory to Landlord. Tenant’s responsibilities under this Lease (other than the obligation to pay Rent) shall commence upon such early occupancy.

	1.3.3	“Expiration Date”:	November 30, 2011.

1.4	“Base Rent”:

Period During Term	Annual Base Rent Per Rentable Square Foot		Annual Monthly Base Rent		Monthly Installment of Base Rent
Commencement Date through 07/31/09	$	36.60	$	280,465.80	$	23,372.15
8/01/09 – 7/31/10	$	37.88	$	290,274.48	$	24,189.54
8/01/10 – 7/31/11	$	39.21	$	300,466.20	$	25,038.85
8/01/11 – 11/30/11	$	40.58	$	310,964.52	$	25,913.71

Notwithstanding the foregoing, so long as no Default (defined in Section 19.1) exists, Tenant shall be entitled to an abatement of Base Rent, in the amount of : (i) $11,686.08 per month, for the second (2^nd), third 3^rd), fourth (4^th), fifth (5^th), sixth (6^th), seventh (7^th) and eighth (8^th) full calendar months of the Term.

1.5	“Base Year” for Expenses:

			Calendar year 2008.

		“Base Year” for Taxes:

			Calendar year 2008.

1.6	“Tenant’s Share”:	2.7762% (based upon a total of 276,030 rentable square feet in the Building), subject to Section 2.1.1. Notwithstanding any contrary provision hereof, for purposes of the definition of Tenant’s Share, the second sentence of Section 2.1.1, and Sections 2.2 and 4, “Building” means, collectively, the Related Buildings (defined below), and “Property” means, collectively, the Related Buildings, the parcel(s) of land upon which the Related Buildings are located and, at Landlord’s discretion, the parking facilities and other improvements, if any, serving the Related Buildings and the parcels of land upon which such parking facilities and improvements are located. As used herein, “Related Buildings” means, collectively, the Building and the building located at 0000 Xxxxxxxx Xxxx, xx Xxx Xxxxx, Xxxxxxxxxx; provided, however, that, at Landlord’s option from time to time, any such building, other than the building(s) in which the Premises is located, may be removed from the Related Buildings (whether as a result of a sale or demolition of such building or otherwise) and any building owned by Landlord may be added to the Related Buildings (whether as a result of a purchase or development of such building or otherwise), in which event, effective as of the date of such removal or addition, Tenant’s Share, together with Expenses and Taxes for the Base Year, shall be recalculated accordingly.

1.7	“Permitted Use”:	General office use consistent with a first-class office building.

1.8.	“Security Deposit”:	$25,913.71, as more particularly described in Section 21.

	Prepaid Base Rent:	$23,372.15, as more particularly described in Section 3.

1.9	Parking:	Unreserved Parking is available at the rate of four (4) parking passes per 1,000 rentable square feet leased. Tenant shall have the right to convert up to 2 unreserved parking passes to reserved parking passes by notice to Landlord on or before the Commencement Date. Tenant shall be required to pay the prevailing rate for any reserved parking passes; as such rate may be adjusted from time to time to reflect Landlord’s then current rates. The current rate is $0 for unreserved parking and $100 per reserved parking pass per month, plus applicable taxes. Notwithstanding anything to the contrary in this Lease, the current parking rates ($0 for unreserved parking and $100 for reserved parking) shall not increase during the initial Term of this Lease.

1.10	Address of Tenant:	Optimer Pharmaceuticals, Inc., 00000 Xxxxxxxx Xxxxxx, Xxxxx X Xxx Xxxxx, XX 00000

		From and after the Commencement Date: the Premises, with a copy to:

		Optimer Pharmaceuticals, Inc., 00000 Xxxxxxxx Xxxxxx, Xxxxx X Xxx Xxxxx, XX 00000

1.11	Address of Landlord:
		Trizec Sorrento Towers, LLC c/o Equity Xxxxxx 0000 Xxxx Xxxxxxxx Xxxxx, Xxxxx 000 Xxx Xxxxx, XX 00000 Attention: Senior Property Manager With copies to: Trizec Sorrento Towers, LLC c/o Equity Xxxxxx Xxx Xxxxx Xxxxxxxxx Xxxxx, Xxxxx 0000 Xxxxxxx, XX 00000 Attention: Managing Counsel and Equity Xxxxxx Xxx Xxxxx Xxxxxxxxx Xxxxx Xxxxx 0000 Xxxxxxx, XX 00000 Attn: Lease Administration

1.12	Broker(s):	Xx. Xxx Xxxxxx and Xx. Xxxxxxx Xxxxxxxx of Xxxxxxx & Xxxxxxxxx (“Tenant’s Broker”), representing Tenant, and Xxxx X. Northbrook, Xxxxx Xxxx and Xxxxxxxxxxx X. High of Xxxxxxx & Wakefield (“Landlord’s Broker”), representing Landlord.

1.13	Building Hours and Holidays:	“Building Hours” mean 8:00 a.m. to 6:00 p.m., Monday through Friday, and 9:00 a.m. to 1:00 p.m. Saturdays, excluding the day of observation of New Year’s Day, Presidents Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, Christmas Day, and, at Landlord’s discretion, any other locally or nationally recognized holiday that is observed by other buildings comparable to and in the vicinity of the Building (collectively, “Holidays”).

1.14	“Transfer Radius”:	None

1.15	“Tenant Improvements”:	Defined in Exhibit B, if any.

1.16	“Guarantor”:	None

1.17	“Letter of Credit”	$170,000.00, subject to reduction in accordance with Section 3 of Exhibit F.

2 PREMISES AND COMMON AREAS.

2.1 The Premises.

2.1.1 Subject to the terms hereof, Landlord hereby leases the Premises to Tenant and Tenant hereby leases the Premises from Landlord. Landlord and Tenant acknowledge that the rentable square footage of the Premises is as set forth in Section 1.2.2 and the rentable square footage of the Building is as set forth in Section 1.6; provided, however, that Landlord may from time to time re-measure the Premises and/or the Building in accordance with any generally accepted measurement standards selected by Landlord and adjust Tenant’s Share based on such re-measurement; provided further, however, that any such re-measurement shall not affect the amount of Base Rent payable for, or the amount of any tenant allowance applicable to, the initial Term. At any time Landlord may deliver to Tenant a notice substantially in the form of Exhibit C, as a confirmation of the information set forth therein. Tenant shall execute and return (or, by notice to Landlord, reasonably object to) such notice within five (5) days after receiving it, and if Tenant fails to do so, Tenant shall be deemed to have executed and returned it without exception.

2.1.2 Except as expressly provided herein (including, without limitation, Exhibit B), the Premises is accepted by Tenant in its condition and configuration existing on the date hereof, without any

obligation of Landlord to perform or pay for any alterations to the Premises, and without any representation or warranty regarding the condition of the Premises, the Building or the Project or their suitability for Tenant’s business. By taking possession of the Premises pursuant to this Lease, Tenant acknowledges that the Premises and the Building are then in the condition and configuration required hereunder. Notwithstanding the foregoing, within 5 days after the substantial completion of the Tenant Work, Landlord and Tenant shall together conduct an inspection of the Premises and prepare a “punch list” setting forth any portions of the Tenant Work that are not in conformity with the Tenant Work as required by the terms of this Lease. Notwithstanding the foregoing, at the request of Landlord, such construction punch list shall be mutually prepared by Landlord and Tenant prior to the date on which Tenant first begins to move its furniture, equipment or other personal property into the Premises. Landlord, as part of the Tenant Work, shall use good faith efforts to correct all such items within a reasonable time following the completion of the punch list.

2.2 Common Areas. Tenant may use, in common with Landlord and other parties and subject to the Rules and Regulations (defined in Exhibit D), any portions of the Property that are designated from time to time by Landlord for such use (the “Common Areas”).

3 RENT. Tenant shall pay all Base Rent and Additional Rent (defined below) (collectively, “Rent”) to Landlord or Landlord’s agent, without prior notice or demand or any setoff or deduction, at the place Landlord may designate from time to time. As used herein, “Additional Rent” means all amounts, other than Base Rent, that Tenant is required to pay Landlord hereunder. Monthly payments of Base Rent and monthly payments of Additional Rent for Expenses (defined in Section 4.2.2), Taxes (defined in Section 4.2.3) and parking (collectively, “Monthly Rent”) shall be paid in advance on or before the first day of each calendar month during the Term; provided, however, that the installment of Base Rent for the first full calendar month for which Base Rent is payable hereunder shall be paid upon Tenant’s execution and delivery hereof. Except as otherwise provided herein, all other items of Additional Rent shall be paid within 30 days after Landlord’s request for payment. Rent for any partial calendar month shall be prorated based on the actual number of days in such month. Without limiting Landlord’s other rights or remedies, (a) if any installment of Rent is not received by Landlord or Landlord’s designee within five (5) business days after its due date, Tenant shall pay Landlord a late charge equal to 5% of the overdue amount; and (b) any Rent that is not paid within 10 days after its due date shall bear interest, from its due date until paid, at the lesser of 18% per annum or the highest rate permitted by Law (defined in Section 5). Tenant’s covenant to pay Rent is independent of every other covenant herein.

4 EXPENSES AND TAXES.

4.1 General Terms. In addition to Base Rent, Tenant shall pay, in accordance with Section 4.4, for each Expense Year (defined in Section 4.2.1), an amount equal to the sum of (a) Tenant’s Share of any amount (the “Expense Excess”) by which Expenses for such Expense Year exceed Expenses for the Base Year, plus (b) Tenant’s Share of any amount (the “Tax Excess”) by which Taxes for such Expense Year exceed Taxes for the Base Year. No decrease in Expenses or Taxes for any Expense Year below the corresponding amount for the Base Year shall entitle Tenant to any decrease in Base Rent or any credit against amounts due hereunder. Tenant’s Share of the Expense Excess and Tenant’s Share of the Tax Excess for any partial Expense Year shall be prorated based on the number of days in such Expense Year.

4.2 Definitions. As used herein, the following terms have the following meanings:

4.2.1 “Expense Year” means each calendar year, other than the Base Year, in which any portion of the Term occurs.

4.2.2 “Expenses” means all expenses, costs and amounts that Landlord pays or accrues during the Base Year or any Expense Year because of or in connection with the ownership, management, maintenance, security, repair, replacement, restoration or operation of the Property. Expenses shall include (i) the cost of supplying all utilities, the cost of operating, repairing, maintaining and renovating the utility, telephone, mechanical, sanitary, storm-drainage, and elevator systems, and the cost of maintenance and service contracts in connection therewith; (ii) the cost of licenses, certificates, permits and inspections, the cost of contesting any Laws that may affect Expenses, and the costs of complying with any governmentally-mandated transportation-management or similar program; (iii) the cost of all insurance premiums and deductibles; (iv) the cost of landscaping and relamping; (v) the cost of parking-area operation, repair, restoration, and maintenance; (vi) fees and other costs, including management and/or incentive fees, consulting fees, legal fees and accounting fees, of all contractors and consultants in connection with the management, operation, maintenance and repair of the Property; (vii) payments under any equipment-rental agreements and the fair rental value of any management office space; (viii) wages, salaries and other compensation, expenses and benefits, including taxes levied thereon, of all persons engaged in the operation, maintenance and security of the Property, and costs of training, uniforms, and employee enrichment for such persons; (ix) the costs of operation, repair, maintenance and replacement of all systems and equipment (and components thereof) of the Property; (x) 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; (xi) rental or

acquisition costs of supplies, tools, equipment, materials and personal property used in the maintenance, operation and repair of the Property; (xii) the cost of capital improvements or any other items that are (A) intended to effect economies in the operation or maintenance of the Property, or to reduce current or future Expenses or to enhance the safety or security of the Property or its occupants, (B) required under any mandatory conservation program, or (C) required to comply with any Law enacted after the Commencement Date of this Lease; and (xiii) payments under any existing or future reciprocal easement agreement, transportation management agreement, cost-sharing agreement or other covenant, condition, restriction or similar instrument affecting the Property.

Notwithstanding the foregoing, Expenses shall not include: (a) capital expenditures not described in clauses (xi) or (xii) above (in addition, any capital expenditure shall be included in Expenses only if paid or accrued after the Base Year and shall be amortized (including actual or imputed interest on the amortized cost) over the useful life of such capital improvements as reasonably determined by Landlord); (b) depreciation; (c) principal payments of mortgage or other non-operating debts of Landlord; (d) the cost of any items for which Landlord is reimbursed by insurance proceeds, condemnation awards, a tenant of the Building, or otherwise to the extent so reimbursed; (e) costs of leasing space in the Building, including brokerage commissions, lease concessions, rental abatements and construction allowances granted to specific tenants; (f) costs of selling, financing or refinancing the Building; (g) fines, penalties or interest resulting from late payment of Taxes or Expenses; (h) Landlord’s general corporate overhead including without limitation organizational expenses of creating or operating the entity that constitutes Landlord; or (i) damages paid to Tenant hereunder or to other tenants of the Building under their respective leases; (j) the cost of providing any service directly to and paid directly by any tenant (outside of such tenant’s Expense payments); (k) ground lease payments (if any); (l) costs incurred by Landlord due to the violation by Landlord or any tenant of the terms and conditions of any lease of space in the Building or any law, code, regulation, ordinance or the like that would not have been incurred but for such violation; (m) any compensation paid to clerks, attendants or other persons in commercial concessions operated by Landlord (other than in the parking facility for the Building); (n) rentals and other related expenses for leasing an HVAC system, elevators, or other items (except when needed in connection with normal repairs and maintenance of the Building) which if purchased, rather than rented, would constitute a capital improvement not included in Expenses pursuant to this Lease; (o) depreciation, amortization and interest payments, except as specifically included in Expenses pursuant to the terms of this Lease and except on materials, tools, supplies and vendor-type equipment purchased by Landlord to enable Landlord to supply services Landlord might otherwise contract for with a third party, where such depreciation, amortization and interest payments would otherwise have been included in the charge for such third party’s services, all as determined in accordance with generally accepted accounting principles, consistently applied, and when depreciation or amortization is permitted or required, the item shall be amortized over its reasonably anticipated useful life; (p) expenses in connection with services or other benefits which are not offered to Tenant or for which Tenant is charged for directly but which are provided to another tenant or occupant of the Building, without charge; (q) costs (including in connection therewith all attorneys’ fees and costs of settlement, judgments and/or payments in lieu thereof) arising from claims, disputes or potential disputes in connection with potential or actual claims, litigation or arbitrations pertaining to another tenant of the Building; (r) costs incurred in connection with the original construction or any future expansion of the Building or Project; (s) costs of correcting defects in or inadequacy of the initial design or construction of the Building or any future expansion of the Building or Project; (t) costs incurred to comply with laws relating to the removal of hazardous materials or to remove, remedy, treat or contain any hazardous material; (u) travel expenses; and (v) costs for the purchase of art work.

If, in the Base Year or any Expense Year, the Property is not 95% occupied (or a service provided by Landlord to tenants of the Building generally is not provided by Landlord to a tenant that provides such service itself), Expenses for such year shall be determined as if the Property had been 95% occupied (and all services provided by Landlord to tenants of the Building generally had been provided by Landlord to all tenants) throughout such year. Notwithstanding any contrary provision hereof, Expenses for the Base Year shall exclude any market-wide cost increases resulting from extraordinary circumstances, including Force Majeure (defined in Section 25.2), boycotts, strikes, conservation surcharges, embargoes or shortages, but only to the extent such events do not continue into any subsequent Expense Year.

4.2.3 “Taxes” means all federal, state, county or local governmental or municipal taxes, fees, charges, assessments, levies, licenses or other impositions, whether general, special, ordinary or extraordinary, that are paid or accrued during the Base Year or any Expense Year (without regard to any different fiscal year used by such governmental or municipal authority) because of or in connection with the ownership, leasing or operation of the Property. Taxes shall include (a) real estate taxes; (b) general and special assessments; (c) transit taxes; (d) leasehold taxes; (e) personal property taxes imposed upon the fixtures, machinery, equipment, apparatus, systems, appurtenances, furniture and other personal property used in connection with the Property; (f) any tax on the rent, right to rent or other income from any portion of the Property or as against the business of leasing any portion of the Property;

(g) any assessment, tax, fee, levy or charge imposed by any governmental agency, or by any non-governmental entity pursuant to any private cost-sharing agreement, in order to fund the provision or enhancement of any fire-protection, street-, sidewalk- or road-maintenance, refuse-removal or other service that is (or, before the enactment of Proposition 13, was) normally provided by governmental agencies to property owners or occupants without charge (other than through real property taxes); and (h) any assessment, tax, fee, levy or charge allocable or measured by the area of the Premises or by the Rent payable hereunder, including any business, gross income, gross receipts, sales or excise tax with respect to the receipt of such Rent. Any costs and expenses (including reasonable attorneys’ and consultants’ fees) incurred in attempting to protest, reduce or minimize Taxes shall be included in Taxes for the year in which they are incurred. Notwithstanding any contrary provision hereof, Taxes shall exclude (i) all general income taxes, excess profits taxes, franchise taxes, gift taxes, transfer taxes, capital stock taxes, inheritance and succession taxes, estate taxes, federal and state income taxes, and other taxes to the extent applicable to Landlord’s general or net income (as opposed to rents, receipts or income attributable to operations at the Property), (ii) any Expenses, (iii) any items required to be paid by Tenant under Section 4.5; (iv) any taxes for any time prior to the Commencement Date or after expiration or earlier termination of this Lease, and (v) any assessments, charges, taxes, rents, fees, rates, levies, excises, license fees, permit fees, inspection fees, impact fees, concurrency fees or other fees or charges to the extent allocable to or caused by the development or installation of on- or off-site improvements or utilities (including without limitation street and intersection improvements, roads, rights of way, lighting and signalization), or any past, present or future system development reimbursement schedule or sinking fund related to any of the foregoing.

4.3 Allocation. Landlord, in its reasonable discretion, may equitably allocate Expenses among office, retail or other portions or occupants of the Property. If Landlord incurs Expenses or Taxes for the Property together with another property, Landlord, in its reasonable discretion, shall equitably allocate such shared amounts between the Property and such other property.

4.4 Calculation and Payment of Expense Excess and Tax Excess.

4.4.1 Statement of Actual Expenses and Taxes; Payment by Tenant. Landlord shall endeavor to give to Tenant, after the end of each Expense Year, a statement (the “Statement”) setting forth the actual Expenses, Taxes, Expense Excess and Tax Excess for such Expense Year. If the amount paid by Tenant for such Expense Year pursuant to Section 4.4.2 is less or more than the sum of Tenant’s Share of the actual Expense Excess plus Tenant’s Share of the actual Tax Excess (as such amounts are set forth in such Statement), Tenant shall pay Landlord the amount of such underpayment, or receive a credit in the amount of such overpayment, with or against the Rent next due hereunder; provided, however, that if this Lease has expired or terminated and Tenant has vacated the Premises, Tenant shall pay Landlord the amount of such underpayment, or Landlord shall pay Tenant the amount of such overpayment (less any Rent due), within 30 days after delivery of such Statement. Any failure of Landlord to timely deliver the Statement for any Expense Year shall not diminish either party’s rights under this Section 4.

4.4.2 Statement of Estimated Expenses and Taxes. Landlord shall endeavor to give to Tenant, for each Expense Year, a statement (the “Estimate Statement”) setting forth Landlord’s reasonable estimates of the Expenses, Taxes, Expense Excess (the “Estimated Expense Excess”) and Tax Excess (the “Estimated Tax Excess”) for such Expense Year. Upon receiving an Estimate Statement, Tenant shall pay, with its next installment of Base Rent, an amount equal to the excess of (a) the amount obtained by multiplying (i) the sum of Tenant’s Share of the Estimated Expense Excess plus Tenant’s Share of the Estimated Tax Excess (as such amounts are set forth in such Estimate Statement), by (ii) a fraction, the numerator of which is the number of months that have elapsed in the applicable Expense Year (including the month of such payment) and the denominator of which is 12, over (b) any amount previously paid by Tenant for such Expense Year pursuant to this Section 4.4.2. Until Landlord delivers a new Estimate Statement (which Landlord may do at any time), Tenant shall pay monthly, with the monthly Base Rent installments, an amount equal to one-twelfth (1/12) of the sum of Tenant’s Share of the Estimated Expense Excess plus Tenant’s Share of the Estimated Tax Excess, as such amounts are set forth in the previous Estimate Statement. Any failure of Landlord to timely deliver any Estimate Statement shall not diminish Landlord’s rights to receive payments and revise any previous Estimate Statement under this Section 4.

4.4.3 Retroactive Adjustment of Taxes. Notwithstanding any contrary provision hereof, if, after Landlord’s delivery of any Statement, an increase or decrease in Taxes occurs for the applicable Expense Year or for the Base Year (whether by reason of reassessment, error, or otherwise), Taxes for such Expense Year or the Base Year, as the case may be, and the Tax Excess for such Expense Year shall be retroactively adjusted. If, as a result of such adjustment, it is determined that Tenant has under- or overpaid Tenant’s Share of such Tax Excess, Tenant shall pay Landlord the amount of such underpayment, or receive a credit in the amount of such overpayment, with or against the Rent next due hereunder; provided, however, that if this Lease has expired or terminated and Tenant has vacated the Premises, Tenant shall pay Landlord the amount of such underpayment, or Landlord shall pay Tenant the amount of such overpayment (less any Rent due), within 30 days after such adjustment is made.

4.5 Charges for Which Tenant Is Directly Responsible. Tenant shall pay, 10 days before delinquency, any taxes levied against Tenant’s equipment, furniture, fixtures and other personal property located in or about the Premises. If any such taxes are levied against Landlord or its property (or if the assessed value of Landlord’s property is increased by the inclusion therein of a value placed upon such equipment, furniture, fixtures or other personal property of Tenant), Landlord may pay such taxes (or such increased assessment) regardless of their (or its) validity, in which event Tenant, upon demand, shall repay to Landlord the amount so paid. If the Leasehold Improvements (defined in Section 7.1) are assessed for real property tax purposes at a valuation higher than the valuation at which tenant improvements conforming to Landlord’s “building standard” in other space in the Building are assessed, the Taxes levied against Landlord or the Property by reason of such excess assessed valuation shall be deemed taxes levied against Tenant’s personal property for purposes of this Section 4.5. Notwithstanding any contrary provision hereof, Tenant shall pay, 10 days before delinquency, (i) any rent tax, sales tax, service tax, transfer tax or value added tax, or any other tax respecting the rent or services described herein or otherwise respecting this transaction or this Lease; and (ii) any taxes assessed upon the possession, leasing, operation, management, maintenance, alteration, repair, use or occupancy by Tenant of any portion of the Property.

5 USE; COMPLIANCE WITH LAWS. Tenant shall not (a) use the Premises for any purpose other than the Permitted Use, or (b) do anything in or about the Premises that violates any of the Rules and Regulations, damages the reputation of the Project, interferes with, injures or annoys other occupants of the Building, or constitutes a nuisance. Tenant, at its expense, shall comply with all Laws relating to (i) the operation of its business at the Project, or (ii) the use, condition, configuration or occupancy of the Premises. If, in order to comply with any such Law, Tenant must obtain or deliver any permit, certificate or other document evidencing such compliance, Tenant shall provide a copy of such document to Landlord promptly after obtaining or delivering it. If a change to the Base Building or Common Areas becomes required under Law as a result of any Alteration or improvement installed by Tenant after the Commencement Date of this Lease or Tenant’s particular use of the Premises other than general office use, Tenant, upon demand, shall, at Landlord’s option, either (x) make such change at Tenant’s cost or (y) pay Landlord the cost of making such change and pay Landlord a coordination fee equal to 5% of the cost of such change. As used herein, “Law” means any existing or future law, ordinance, regulation or requirement of any governmental authority having jurisdiction over the Project or the parties. Notwithstanding anything to the contrary in this Lease, Landlord, at Landlord’s sole cost and expense, shall be responsible for any legal compliance work required to cause the Premises to comply with applicable Laws as of the Commencement Date, regardless of whether such costs are triggered by the Tenant Improvements (as that term is defined in Exhibit “B” attached hereto). Landlord hereby warrants that, to its actual knowledge as of Landlord’s delivery of the Premises to Tenant, the Tenant Improvements shall be in compliance with all Laws applicable thereto as of the issuance of the building permits therefor, and Landlord shall, at its sole cost and expense and as Tenant’s sole remedy, correct any breach of such warranty promptly following receipt of written notice thereof from Tenant.

6 SERVICES.

6.1 Standard Services. Landlord shall provide the following services on all days (unless otherwise stated below): (a) subject to limitations imposed by Law, customary heating, ventilation and air conditioning (“HVAC”) in season during Building Hours; (b) electricity sufficient for lighting and normal office use supplied by the applicable public utility, stubbed to the Premises; (c) water supplied by the applicable public utility (i) for use in lavatories and any drinking facilities located in Common Areas within the Building, and (ii) stubbed to the Building core for use in any plumbing fixtures located in the Premises; (d) janitorial services to the Premises, except on weekends and Holidays; and (e) elevator service (subject to scheduling by Landlord, and payment of Landlord’s standard usage fee, for any freight service).

6.2 Above-Standard Use. Landlord shall provide HVAC service outside Building Hours if Tenant gives Landlord such prior notice and pays Landlord such hourly cost per zone as Landlord may require, which cost is currently Forty Dollars ($40.00) per hour. Tenant shall not, without Landlord’s prior consent, use equipment other than normal office equipment that may affect the temperature maintained by the air conditioning system or consume above-Building-standard amounts of any water furnished for the Premises by Landlord pursuant to Section 6.1. If Tenant’s consumption of electricity or water exceeds the rate Landlord reasonably deems to be standard for general office use in the Building, Tenant shall pay Landlord, upon billing, the cost of such excess consumption, including any costs of installing, operating and maintaining any equipment that is installed in order to supply or measure such excess electricity or water. The connected electrical load of Tenant’s incidental-use equipment shall not exceed the Building-standard electrical design load, and Tenant’s electrical usage shall not exceed the capacity of the feeders to the Project or the risers or wiring installation.

6.3 Interruption. Any failure to furnish, delay in furnishing, or diminution in the quality or quantity of any service resulting from any application of Law, failure of equipment, performance of maintenance, repairs, improvements or alterations, utility interruption, or event of Force Majeure (each, a “Service Interruption”) shall not render Landlord liable to Tenant, constitute a constructive eviction,

or excuse Tenant from any obligation hereunder. Notwithstanding the foregoing, if all or a material portion of the Premises is made untenantable or inaccessible for more than five (5) consecutive days after notice from Tenant to Landlord by a Service Interruption that Landlord can correct through reasonable efforts, then, as Tenant’s sole remedy, Monthly Rent shall xxxxx for the period beginning on the day immediately following such 5-day period and ending on the day such Service Interruption ends, but only in proportion to the percentage of the rentable square footage of the Premises made untenantable or inaccessible.

7 REPAIRS AND ALTERATIONS.

7.1 Repairs. Tenant, at its expense, shall perform all maintenance and repairs (including replacements) to the Premises that are not Landlord’s express responsibility hereunder, and shall keep the Premises in good condition and repair, reasonable wear and tear excepted. Tenant’s maintenance and repair obligations shall include (a) all leasehold improvements in the Premises, whenever and by whomever installed or paid for, including any Tenant Improvements, any Alterations (defined in Section 7.2), and any leasehold improvements installed pursuant to any prior lease, but excluding the Base Building (the “Leasehold Improvements”); (b) all supplemental heating, ventilation and air conditioning units, kitchens (including hot water heaters, dishwashers, garbage disposals, insta-hot dispensers, and plumbing) and similar facilities exclusively serving Tenant, whether located inside or outside of the Premises, and whenever and by whomever installed or paid for; and (c) all Lines (defined in Section 23). Notwithstanding the foregoing, Landlord may, at its option, perform such maintenance and repairs on Tenant’s behalf, in which case Tenant shall pay Landlord, upon demand, the cost of such work plus a coordination fee equal to 5% of such cost. Landlord shall maintain the following items in first class condition and repair and in accordance with all applicable Laws: (i) the roof and exterior walls and windows of the Building, (ii) the Base Building, and (iii) the Common Areas. As used herein, “Base Building” means the structural portions of the Building (including without limitation the foundation, floor/ceiling slabs, columns, beams, shafts (including elevator shafts), stairs, stairwells and elevator cabs), together with all mechanical (including without limitation the sprinkler systems and HVAC), electrical, plumbing and fire/life-safety systems serving the Building, whether located inside or outside of the Premises.

7.2 Alterations. Tenant may not make any improvement, alteration, addition or change to the Premises or to any mechanical, plumbing or HVAC facilities or other systems serving the Premises (an “Alteration”) without Landlord’s prior consent, which consent shall be requested by Tenant not less than 30 days before commencement of work and shall not be unreasonably withheld by Landlord. Notwithstanding the foregoing, Landlord’s prior consent shall not be required for any Alteration that is decorative only (e.g., carpet installation or painting) provided that Landlord receives 10 business days’ prior notice. For any Alteration, (a) Tenant, before commencing work, shall deliver to Landlord, and obtain Landlord’s approval of, plans and specifications; (b) Landlord, in its discretion, may require Tenant to obtain security for performance satisfactory to Landlord; (c) Tenant shall deliver to Landlord “as built” drawings (in CAD format, if requested by Landlord), completion affidavits, full and final lien waivers, and all governmental approvals; and (d) Tenant shall pay Landlord upon demand (i) Landlord’s reasonable out-of-pocket expenses incurred in reviewing the work, and (ii) a coordination fee equal to 5% of the cost of the work; provided, however, that this clause (d) sentence shall not apply to Alterations that are decorative only or any Tenant Improvements constructed pursuant to Exhibit B, if any.

7.3 Tenant Work. Before commencing any repair or Alteration (“Tenant Work”), Tenant shall deliver to Landlord, and obtain Landlord’s approval of, (a) names of contractors, subcontractors, mechanics, laborers and materialmen; (b) evidence of contractors’ and subcontractors’ insurance; and (c) any required governmental permits. Tenant shall perform all Tenant Work (i) in a good and workmanlike manner using materials of a quality reasonably approved by Landlord; (ii) in compliance with any approved plans and specifications, all Laws, the National Electric Code, and Landlord’s construction rules and regulations; and (iii) in a manner that does not impair the Base Building. If, as a result of any Tenant Work, Landlord becomes required under Law to perform any inspection, give any notice, or cause such Tenant Work to be performed in any particular manner, Tenant shall comply with such requirement and promptly provide Landlord with reasonable documentation of such compliance. Landlord’s approval of Tenant’s plans and specifications shall not relieve Tenant from any obligation under this Section 7.3. In performing any Tenant Work, Tenant shall not use contractors, services, labor, materials or equipment that, in Landlord’s reasonable judgment, would disturb labor harmony with any workforce or trades engaged in performing other work or services at the Project.

7.4 Tenant’s Security System. Tenant, subject to Landlord’s reasonable approval pursuant to Article 8, shall be permitted to install its own security system for the Premises, which system may operate on the same type of access system as the Building system, but may not otherwise be integrated with the Building security system. Tenant shall be solely responsible for the costs of designing, installing, maintaining, repairing and operating Tenant’s security system and for assuring that Tenant’s security system is in full compliance with all Laws, including, without limitation, any building and fire codes. Tenant shall provide Landlord with key cards or access codes, as applicable, to permit access to the Premises for the purposes described in this Lease. Tenant shall be solely responsible for the

monitoring and operation of Tenant’s security system and, in accordance with Article 10, shall indemnify and hold Landlord harmless from any claims arising out of or in connection with Tenant’s security system.

8 LANDLORD’S PROPERTY. All Leasehold Improvements shall become Landlord’s property upon installation and without compensation to Tenant. Notwithstanding the foregoing, unless otherwise notified by Landlord before the expiration or earlier termination hereof, Tenant, at its expense, shall (a) remove any Alterations, (b) repair any resulting damage to the Premises or Building, and (c) restore the affected portion of the Premises to its condition existing before the installation of such Alterations (or, at Landlord’s election, to a building-standard tenant-improved condition as determined by Landlord). If Tenant fails to complete such removal, repair or restoration when required, Landlord may do so at Tenant’s expense. For the avoidance of doubt, Tenant shall not be required to remove the Tenant Improvements constructed pursuant to Exhibit B. In addition, Tenant may request in writing at the time it submits its plans and specifications for an Alteration, that Landlord advise Tenant whether Landlord will require Tenant to remove, at the expiration or earlier termination of this Lease, such Alteration or any particular portion thereof and Landlord shall advise Tenant within ten (10) days after receipt of Tenant’s request as to whether Landlord will require removal. Landlord’s failure to respond within such ten (10) day period shall be deemed to be a notice by Landlord that removal of such Alteration shall not be required.

9 LIENS. Tenant shall keep the Project free from any lien arising out of any work performed, material furnished or obligation incurred by or on behalf of Tenant. Tenant shall remove any such lien within 10 business days after notice from Landlord, and if Tenant fails to do so, Landlord, without limiting its remedies, may pay the amount necessary to cause such removal, whether or not such lien is valid. The amount so paid, together with reasonable attorneys’ fees and expenses, shall be reimbursed by Tenant upon demand.

10 INDEMNIFICATION; INSURANCE.

10.1 Waiver and Indemnification. Tenant waives all claims against Landlord, its Security Holders (defined in Section 18), their (direct or indirect) owners, and their respective beneficiaries, trustees, officers, directors, employees and agents (including Landlord, the “Landlord Parties”) for (i) any damage to person or property (or resulting from the loss of use thereof), except to the extent such damage is caused by the negligence or willful misconduct of any Landlord Party, or (ii) any failure to prevent or control any criminal or otherwise wrongful conduct by any third party or to apprehend any third party who has engaged in such conduct. Tenant shall indemnify, defend, protect, and hold the Landlord Parties harmless from any obligation, loss, claim, action, liability, penalty, damage, cost or expense (including reasonable attorneys’ and consultants’ fees and expenses) (each, a “Claim”) that is imposed or asserted by any third party and arises from (a) any cause in or on the Premises, (b) occupancy of the Premises by, or any negligence or willful misconduct of, Tenant, any party claiming by, through or under Tenant, their (direct or indirect) owners, or any of their respective beneficiaries, trustees, officers, directors, employees, agents, contractors, licensees or invitees, or (c) any breach by Tenant of any representation, covenant or other term contained herein, except to the extent such Claim arises from the negligence or willful misconduct of any Landlord Party. Landlord shall be liable for, and shall indemnify, defend, protect and hold Tenant and Tenant’s partners, officers, directors, employees, agents, successors and assigns (collectively, “Tenant Indemnified Parties”) harmless from and against any and all Claims arising or resulting from (a) any negligent or willful misconduct of Landlord or any of Landlord’s agents, employees, contractors or licensees in or about the Premises, the Building or the Property (collectively, “Landlord Parties”); and/or (b) any default by Landlord of any obligations on Landlord’s part to be performed under the terms of this Lease.

10.2 Tenant’s Insurance. Tenant shall maintain the following coverages in the following amounts:

10.2.1 Commercial General Liability Insurance covering claims of bodily injury, personal injury and property damage arising out of Tenant’s operations and contractual liabilities, including coverage formerly known as broad form, on an occurrence basis, with minimum primary limits of $1,000,000 each occurrence and $2,000,000 annual aggregate (and not more than $25,000 self-insured retention) and a minimum excess/umbrella limit of $2,000,000.

10.2.2 Property Insurance 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 in the Premises installed by, for, or at the expense of Tenant, and (ii) any Leasehold Improvements installed by or for the benefit of Tenant, whether pursuant to this Lease or pursuant to any prior lease or other agreement to which Tenant was a party (“Tenant-Insured Improvements”). Such insurance shall be written on an “all risks” of physical loss or damage basis, 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 vandalism and malicious

mischief, theft, water damage of any type, including sprinkler leakage, bursting or stoppage of pipes, and explosion, and providing business interruption coverage for a period of one year.

10.2.3 Worker’s Compensation and Employer’s Liability or other similar insurance to the extent required by Law.

10.3 Form of Policies. The minimum limits of insurance required to be carried by Tenant shall not limit Tenant’s liability. Such insurance shall (i) be issued by an insurance company that has an A.M. Best rating of not less than A-VIII and a certificate of authority issued by the California Insurance Commissioner; (ii) be in form and content reasonably acceptable to Landlord; and (iii) provide that it shall not be canceled or materially changed without 30 days’ prior notice to Landlord, except that 10 days’ prior notice may be given in the case of nonpayment of premiums. Tenant’s Commercial General Liability Insurance shall (a) name Landlord, Landlord’s managing agent, and any other party designated by Landlord (“Additional Insured Parties”) as additional insureds; and (b) be primary insurance as to all claims thereunder and provide that any insurance carried by Landlord is excess and non-contributing with Tenant’s insurance. Landlord shall be designated as a loss payee with respect to Tenant’s Property Insurance on any Tenant-Insured Improvements. Tenant shall deliver to Landlord, on or before the Commencement Date and at least 15 days before the expiration dates thereof, certificates from Tenant’s insurance company on the forms currently designated “XXXXX 28” (Evidence of Commercial Property Insurance) and “XXXXX 25-S” (Certificate of Liability Insurance) or the equivalent. Attached to the XXXXX 25-S there shall be an endorsement naming the Additional Insured Parties as additional insureds which shall be binding on Tenant’s insurance company and shall expressly require the insurance company to notify each Additional Insured Party in writing at least 30 days before any termination or material change to the policies, except that 10 days’ prior notice may be given in the case of nonpayment of premiums. Upon Landlord’s request, Tenant shall deliver to Landlord, in lieu of such certificates, copies of the policies of insurance required to be carried under Section 10.2 showing that the Additional Insured Parties are named as additional insureds.

10.4 Subrogation. Subject to Section 11, each party waives, and shall cause its insurance carrier to waive, any right of recovery against the other for any loss of or damage to property which loss or damage is (or, if the insurance required hereunder had been carried, would have been) covered by insurance. For purposes of this Section 10.4, any deductible with respect to a party’s insurance shall be deemed covered by, and recoverable by such party under, valid and collectable policies of insurance.

10.5 Additional Insurance Obligations. Tenant shall maintain such increased amounts of the insurance required to be carried by Tenant under this Section 10, and such other types and amounts of insurance covering the Premises and Tenant’s operations therein, as may be reasonably requested by Landlord, but not in excess of the amounts and types of insurance then being required by landlords of buildings comparable to and in the vicinity of the Building.

10.6 Landlord’s Insurance. Landlord shall, as a cost to be included in Expenses, procure and maintain during the Term hereof, a policy or policies of insurance covering loss or damage to the Building due to fire and other casualties covered within the classification of fire and extended coverage, vandalism coverage and malicious mischief, sprinkler leakage, water damage and special extended coverage on the Building and commercial general liability insurance. Such insurance shall be in such amounts, from such companies, and on such terms and conditions as Landlord or its lender may deem appropriate from time to time.

11 CASUALTY DAMAGE. With reasonable promptness after discovering any damage to the Premises, or to the Common Areas necessary for access to the Premises, resulting from any fire or other casualty (a “Casualty”), Landlord shall notify Tenant of Landlord’s reasonable estimate of the time required to substantially complete repair of such damage (the “Landlord Repairs”). If, according to such estimate, the Landlord Repairs cannot be substantially completed within 180 days after commencement (or prior to the then scheduled expiration date of this Lease, whichever is sooner), either party may terminate this Lease upon 60 days’ notice to the other party delivered within 10 days after Landlord’s delivery of such estimate. Within 90 days after discovering any damage to the Project resulting from any Casualty, Landlord may, whether or not the Premises is affected, terminate this Lease by notifying Tenant if (i) any Security Holder terminates any ground lease or requires that any insurance proceeds be used to pay any mortgage debt; (ii) any damage to Landlord’s property is not fully covered by Landlord’s insurance policies; (iii) Landlord decides to rebuild the Building or Common Areas so that it or they will be substantially different structurally or architecturally; (iv) the damage occurs during the last 12 months of the Term; or (v) any owner, other than Landlord, of any damaged portion of the Project does not intend to repair such damage. If this Lease is not terminated pursuant to this Section 11, Landlord shall promptly and diligently perform the Landlord Repairs, subject to reasonable delays for insurance adjustment and other events of Force Majeure. The Landlord Repairs shall restore the Premises and the Common Areas necessary for access to the Premises to substantially the same condition that existed when the Casualty occurred, except for (a) any modifications required by Law or any Security Holder, and (b) any modifications to the Common Areas that are deemed desirable by Landlord, are consistent with the character of the Project, and do not materially impair access to the Premises. Tenant shall assign to Landlord (or its designee) all insurance proceeds payable to Tenant under Tenant’s insurance required under Section 10.2 with respect to any Tenant-Insured Improvements. If the estimated or actual cost of restoring any Tenant-Insured Improvements exceeds the insurance proceeds received by Landlord from Tenant’s insurance carrier, Tenant shall pay such excess to Landlord within 15 days after Landlord’s demand. No Casualty and no restoration performed as required hereunder shall render Landlord liable to Tenant, constitute a constructive eviction, or excuse Tenant from any obligation hereunder; provided, however, that if the Premises or any Common Area necessary for Tenant’s access to the Premises is damaged by a Casualty, then, during any time that, as a result of such damage, any portion of the Premises is untenantable or inaccessible and is not occupied by Tenant, Monthly Rent shall be abated in proportion to the rentable square footage of such portion of the Premises.

12 NONWAIVER. No provision hereof shall be deemed waived by either party unless it is waived by such party expressly and in writing, and no waiver of any breach of any provision hereof shall be deemed a waiver of any subsequent breach of such provision or any other provision hereof. Landlord’s acceptance of Rent shall not be deemed a waiver of any preceding breach of any provision hereof, other than Tenant’s failure to pay the particular Rent so accepted, regardless of Landlord’s knowledge of such preceding breach at the time of such acceptance. No acceptance of payment of an amount less than the Rent due hereunder shall be deemed a waiver of Landlord’s right to receive the full amount of Rent due, whether or not any endorsement or statement accompanying such payment purports to effect an accord and satisfaction. No receipt of monies by Landlord from Tenant after the giving of any notice, the commencement of any suit, the issuance of any final judgment, or the termination hereof shall affect such notice, suit or judgment, or reinstate or extend the Term or Tenant’s right of possession hereunder.

13 CONDEMNATION. If any part of the Premises, Building or Project is taken for any public or quasi-public use by power of eminent domain or by private purchase in lieu thereof (a “Taking”) for more than 180 consecutive days, Landlord may terminate this Lease. If more than 25% of the rentable square footage of the Premises is Taken, or access to the Premises is substantially impaired as a result of a Taking, for more than 180 consecutive days, Tenant may terminate this Lease. Any such termination shall be effective as of the date possession must be surrendered to the authority, and the terminating party shall provide termination notice to the other party within 45 days after receiving written notice of such surrender date. Except as provided above in this Section 13, neither party may terminate this Lease as a result of a Taking. Tenant shall not assert any claim for compensation because of any Taking; provided, however, that Tenant may file a separate claim for any Taking of Tenant’s personal property or any fixtures that Tenant is entitled to remove upon the expiration hereof, and for moving expenses, so long as such claim does not diminish the award available to Landlord or any Security Holder and is payable separately to Tenant. If this Lease is terminated pursuant to this Section 13, all Rent shall be apportioned as of the date of such termination. If a Taking occurs and this Lease is not so terminated, Monthly Rent shall be abated for the period of such Taking in proportion to the percentage of the rentable square footage of the Premises, if any, that is subject to, or rendered inaccessible by, such Taking.

14 ASSIGNMENT AND SUBLETTING.

14.1 Transfers. Tenant shall not, without Landlord’s prior consent, assign, mortgage, pledge, hypothecate, encumber, permit any lien to attach to, or otherwise transfer this Lease or any interest hereunder, permit any assignment or other transfer hereof or any interest hereunder by operation of law, enter into any sublease or license agreement, or otherwise permit the occupancy or use of any part of the Premises by any persons other than Tenant and its employees and contractors (each, a “Transfer”). If Tenant desires Landlord’s consent to any Transfer, Tenant shall provide Landlord with (i) notice of the

terms of the proposed Transfer, including its proposed effective date (the “Contemplated Effective Date”), a description of the portion of the Premises to be transferred (the “Contemplated Transfer Space”), a calculation of the Transfer Premium (defined in Section 14.3), and a copy of all existing executed and/or proposed documentation pertaining to the proposed Transfer, and (ii) current financial statements of the proposed transferee (or, in the case of a Transfer described in Section 14.6, of the proposed new controlling party(ies)) certified by an officer or owner thereof and any other information reasonably required by Landlord in order to evaluate the proposed Transfer (collectively, the “Transfer Notice”). Within 30 days after receiving the Transfer Notice, Landlord shall notify Tenant of (a) its consent to the proposed Transfer, (b) its refusal to consent to the proposed Transfer, or (c) its exercise of its rights under Section 14.4. Tenant shall reimburse Landlord for actual expenses incurred by Landlord in its review of any proposed Transfer, whether or not Landlord consents to it, provided that, so long as Tenant signs Landlord’s standard consent document without material changes thereto, such reimbursement obligations shall not require Tenant to pay to Landlord an amount in excess of $1,500.00.

14.2 Landlord’s Consent. Subject to Section 14.4, Landlord shall not unreasonably withhold its consent to any proposed Transfer. Without limiting other reasonable grounds for withholding consent, it shall be deemed reasonable for Landlord to withhold consent to a proposed Transfer if:

14.2.1 The proposed transferee is not a party of reasonable financial strength in light of the responsibilities to be undertaken in connection with the Transfer on the date the Transfer Notice is received; or

14.2.2 The proposed transferee has a character or reputation or is engaged in a business that is not consistent with the quality of the Building or the Project; or

14.2.3 The proposed transferee is a governmental entity or a nonprofit organization; or

14.2.4 Intentionally omitted; or

14.2.5 The proposed transferee or any of its Affiliates, on the date the Transfer Notice is received, leases or occupies (or, at any time during the 6-month period ending on the date the Transfer Notice is received, has negotiated with Landlord to lease) space in the Project.

Notwithstanding any contrary provision hereof, (a) if Landlord consents to any Transfer pursuant to this Section 14.2 but Tenant does not enter into such Transfer within six (6) months thereafter, such consent shall no longer apply and such Transfer shall not be permitted unless Tenant again obtains Landlord’s consent thereto pursuant and subject to the terms of this Section 14; and (b) if Landlord unreasonably withholds its consent under this Section 14.2, Tenant’s sole remedies shall be contract damages (subject to Section 20) or specific performance, and Tenant waives all other remedies, including any right to terminate this Lease.

14.3 Transfer Premium. If Landlord consents to a Transfer, Tenant shall pay Landlord an amount equal to 50% of any Transfer Premium (defined below). As used herein, “Transfer Premium” means (a) in the case of an assignment, any consideration (including payment for Leasehold Improvements) paid by the assignee for such assignment; (b) in the case of a sublease, license or other occupancy agreement, the amount by which all rent and other consideration paid by the transferee to Tenant pursuant to such agreement exceeds the Monthly Rent payable by Tenant hereunder with respect to the Contemplated Transfer Space for the term of such agreement; and (c) in the case of a Transfer described in Section 14.6, any consideration (including payment for Leasehold Improvements) paid by the new controlling party(ies) to the prior controlling party(ies) on account of this Lease. Payment of Landlord’s share of the Transfer Premium shall be made (x) in the case of an assignment or a Transfer described in Section 14.6, within 10 days after Tenant or the prior controlling party(ies), as the case may be, receive(s) the consideration described above, and (y) in the case of a sublease, license or other occupancy agreement, on the first day of each month during the term of such agreement, in the amount of 50% of the amount by which the rent and other consideration paid by the transferee to Tenant under such agreement for such month exceeds the Monthly Rent and other consideration payable by Tenant hereunder with respect to the Contemplated Transfer Space for such month.

14.4 Landlord’s Right to Recapture. Notwithstanding any contrary provision hereof, except in the case of a Permitted Transfer (defined in Section 14.8), Landlord, by notifying Tenant within 30 days after receiving the Transfer Notice, may terminate this Lease with respect to the Contemplated Transfer Space as of the Contemplated Effective Date. If the Contemplated Transfer Space is less than the entire Premises, then Base Rent, Tenant’s Share, and the number of parking spaces to which Tenant is entitled under Section 1.9 shall be deemed adjusted on the basis of the percentage of the rentable square footage of the Premises retained by Tenant. Upon request of either party, the parties shall execute a written agreement prepared by Landlord memorializing such termination. Notwithstanding anything to the contrary in this Section 14.4, if Landlord notifies Tenant of its election to terminate this Lease with respect to the Contemplated Transfer Space, then Tenant may, within 5 days of its receipt of Landlord’s notice, revoke Tenant’s Transfer Notice and Landlord shall no longer have the right to terminate this

Lease with respect to the Contemplated Transfer Space.

14.5 Effect of Consent. If Landlord consents to a Transfer, (i) such consent shall not be deemed a consent to any further Transfer, (ii) Tenant shall deliver to Landlord, promptly after execution, an executed copy of all documentation pertaining to the Transfer in form reasonably acceptable to Landlord, and (iii) Tenant shall deliver to Landlord, upon Landlord’s request, a complete statement, certified by an independent CPA or Tenant’s chief financial officer, setting forth in detail the computation of any Transfer Premium. In the case of an assignment, the assignee shall assume in writing, for Landlord’s benefit, all of Tenant’s obligations hereunder. No Transfer, with or without Landlord’s consent, shall relieve Tenant or any guarantor hereof from any liability hereunder.

14.6 Additional Transfers. Except to the extent the same are “Permitted Transfers” pursuant to Section 14.8 below, as used herein, the term “Transfer” includes (a) if Tenant is a closely held professional service firm, the withdrawal or change (whether voluntary, involuntary or by operation of law) of 50% or more of its equity owners within a 12-month period; and (b) in all other cases, any transaction(s) resulting in the acquisition of a Controlling Interest (defined below) by one or more parties that did not own a Controlling Interest immediately before such transaction(s). As used herein, “Controlling Interest” means any direct or indirect equity or beneficial ownership interest in Tenant that confers upon its holder(s) the direct or indirect power to direct the ordinary management and policies of Tenant, whether through the ownership of voting securities, by contract or otherwise (but not through the ownership of voting securities listed on a recognized securities exchange).

14.7 Effect of Default. If Tenant is in Default, Landlord is irrevocably authorized, as Tenant’s agent and attorney-in-fact, to direct any transferee under any sublease, license or other occupancy agreement to make all payments under such agreement directly to Landlord (which Landlord shall apply towards Tenant’s obligations hereunder) until such Default is cured. Such transferee shall rely upon any representation by Landlord that Tenant is in Default, whether or not confirmed by Tenant.

14.8 Permitted Transfers. Notwithstanding any contrary provision hereof, if Tenant is not in Default, Tenant may, without Landlord’s consent pursuant to Section 14.1, assign this Lease to (a) an Affiliate of Tenant, (b) a successor to Tenant by merger or consolidation, (c) a successor to Tenant by purchase of all or substantially all of Tenant’s assets, or (d) any entity which becomes a parent, successor or Affiliate of Tenant, or is a successor of Tenant by reason of public offering, reorganization, dissolution, or sale of stock, membership or partnership interests (a “Permitted Transfer”), provided that (i) at least 10 business days before the Transfer, Tenant notifies Landlord of such Transfer and delivers to Landlord any documents or information reasonably requested by Landlord relating thereto, including reasonable documentation that the Transfer satisfies the requirements of this Section 14.8; (ii) in the case of an assignment pursuant to clause (a) or (c) above, the assignee executes and delivers to Landlord, at least 10 business days before the assignment, a commercially reasonable instrument pursuant to which the assignee assumes, for Landlord’s benefit, all of Tenant’s obligations hereunder; (iii) in the case of an assignment pursuant to clause (b) above, the successor entity has a net worth (as determined in accordance with GAAP (“Net Worth”)) immediately after the Transfer that not less than the Net Worth of Tenant immediately before the Transfer; (iv) the transferee is qualified to conduct business in the State of California; and (v) the Transfer is made for a good faith operating business purpose and not in order to evade the requirements of this Section 14. As used herein, “Affiliate” means, with respect to any party, a person or entity that controls, is under common control with, or is controlled by such party.

15 SURRENDER. Upon the expiration or earlier termination hereof, and subject to Section 8 and this Section 15, Tenant shall surrender possession of the Premises to Landlord in good condition and repair and as thereafter improved by Landlord and/or Tenant, except for reasonable wear and tear and repairs that are Landlord’s express responsibility hereunder. Before such expiration or termination, Tenant, without expense to Landlord, shall (a) remove from the Premises all debris and rubbish and all furniture, equipment, business and trade fixtures, Lines, free-standing cabinet work, movable partitions and other articles of personal property that are owned or placed in the Premises by Tenant or any party claiming by, through or under Tenant (except for any Lines not required to be removed under Section 23), and (b) repair all damage to the Premises and Building resulting from such removal. If Tenant fails to timely perform such removal and repair, Landlord may do so at Tenant’s expense (including storage costs). If Tenant fails to remove such property from the Premises, or from storage, within 30 days after notice from Landlord, any part of such property shall be deemed, at Landlord’s option, either (x) conveyed to Landlord without compensation, or (y) abandoned.

16 HOLDOVER. If Tenant fails to surrender the Premises upon the expiration or earlier termination hereof, Tenant’s tenancy shall be subject to the terms and conditions hereof; provided, however, that such tenancy shall be a tenancy at sufferance only, for the entire Premises, and Tenant shall pay Monthly Rent (on a per-month basis without reduction for any partial month) at a rate equal to 150% of the Monthly Rent applicable during the last calendar month of the Term. Nothing in this Section 16 shall limit Landlord’s rights or remedies or be deemed a consent to any holdover. If Landlord is unable to deliver possession of the Premises to a new tenant or to perform improvements for a new tenant as a result of Tenant’s holdover, and if Landlord provides written notice to Tenant that Landlord has agreed to lease the

Premises to a new tenant and that any holdover by Tenant would result in monetary damages to Landlord, then Tenant shall be liable for all resulting damages, including lost profits, incurred by Landlord.

17 SUBORDINATION; ESTOPPEL CERTIFICATES. This Lease shall be subject and subordinate to all existing and future ground or underlying leases, mortgages, trust deeds and other encumbrances against the Building or Project, all renewals, extensions, modifications, consolidations and replacements thereof (each, a “Security Agreement”), and all advances made upon the security of such mortgages or trust deeds, unless in each case the holder of such Security Agreement (each, a “Security Holder”) requires in writing that this Lease be superior thereto. Upon any termination or foreclosure (or any delivery of a deed in lieu of foreclosure) of any Security Agreement, Tenant, upon request, shall attorn, without deduction or set-off, to the Security Holder or purchaser or any successor thereto and shall recognize such party as the lessor hereunder provided that such party agrees not to disturb Tenant’s occupancy so long as Tenant timely pays the Rent and otherwise performs its obligations hereunder. Within 10 days after request by Landlord, Tenant shall execute such further commercially reasonable instruments as Landlord may reasonably deem necessary to evidence the subordination or superiority of this Lease to any Security Agreement. Tenant waives any right it may have under Law to terminate or otherwise adversely affect this Lease or Tenant’s obligations hereunder upon a foreclosure. Within 10 business days after Landlord’s request, Tenant shall execute and deliver to Landlord a commercially reasonable estoppel certificate in favor of such parties as Landlord may reasonably designate, including current and prospective Security Holders and prospective purchasers.

18 ENTRY BY LANDLORD. At all reasonable times and upon reasonable notice to Tenant, or in an emergency, Landlord may enter the Premises to (i) inspect the Premises; (ii) show the Premises to prospective purchasers, current or prospective Security Holders or insurers, or, during the last 12 months of the Term (or while an uncured Default exists), prospective tenants; (iii) post notices of non-responsibility; or (iv) perform maintenance, repairs or alterations. At any time and without notice to Tenant, Landlord may enter the Premises to perform required services. If reasonably necessary, Landlord may temporarily close any portion of the Premises to perform maintenance, repairs or alterations. In an emergency, Landlord may use any means it deems proper to open doors to and in the Premises. No entry into or closure of any portion of the Premises pursuant to this Section 18 shall render Landlord liable to Tenant, constitute a constructive eviction, or excuse Tenant from any obligation hereunder. Notwithstanding anything to the contrary, in exercise of its rights under this Section 18, Landlord shall use commercially reasonable efforts to avoid interference with Tenant’s use of the Premises including without limitation contacting Tenant in advance of any necessary closure of the Premises (except in the case of an emergency) to schedule a time for such closure that will not unreasonably interfere with Tenant’s use of the Premises.

19 DEFAULTS; REMEDIES.

19.1 Events of Default. The occurrence of any of the following shall constitute a “Default”:

19.1.1 Any failure by Tenant to pay any Rent when due unless such failure is cured within five (5) business days after notice; or

19.1.2 Except where a specific time period is otherwise set forth for Tenant’s performance herein (in which event the failure to perform by Tenant within such time period shall be a Default), and except as otherwise provided in this Section 19.1, any failure by Tenant to observe or perform any other provision, covenant or condition hereof where such failure continues for 30 days after notice from Landlord; provided that if such failure cannot reasonably be cured within such 30-day period, Tenant shall not be in Default as a result of such failure if Tenant diligently commences such cure within such period, thereafter diligently pursues such cure, and completes such cure within 60 days after Landlord’s notice; or

19.1.3 Intentionally Omitted; or

19.1.4 Any failure by Tenant to observe or perform the provisions of Sections 5, 14, 17 or 18 where such failure continues for more than two (2) business days after written notice from Landlord; or

19.1.5 Tenant becomes in breach of Section 25.3.

If Tenant defaults under a particular provision hereof (other than a provision requiring payment of Rent) on three (3) separate occasions during any 12-month period, Tenant’s subsequent violation of such provision shall be, at Landlord’s option, an incurable Default. The notice periods provided herein are in lieu of, and not in addition to, any notice periods provided by Law, and Landlord shall not be required to give any additional notice in order to be entitled to commence an unlawful detainer proceeding.

19.2 Remedies Upon Default. Upon any Default, Landlord shall have, in addition to any other remedies available to Landlord at law or in equity (which shall be cumulative and nonexclusive), the

option to pursue any one or more of the following remedies (which shall be cumulative and nonexclusive) without any notice or demand:

19.2.1 Landlord may terminate this Lease, in which event Tenant shall immediately surrender the Premises to Landlord, and if Tenant fails to do so, Landlord may, without prejudice to any other remedy it may have for possession or arrearages in Rent, enter upon and take possession of the Premises and expel or remove Tenant and any other person who may be occupying the Premises or any part thereof, without being liable for prosecution or any claim or damages therefor; and Landlord may recover from Tenant the following:

(a) The worth at the time of award of the unpaid Rent which has been earned at the time of such termination; plus

(b) The worth at the time of award of the amount by which the unpaid Rent which would have been earned after termination until the time of award exceeds the amount of such rental loss that Tenant proves could have been reasonably avoided; plus

(c) The worth at the time of award of the amount by which the unpaid Rent for the balance of the Term after the time of award exceeds the amount of such Rent loss that Tenant proves could have been reasonably avoided; plus

(d) Any other amount necessary to compensate Landlord for all the detriment proximately caused by Tenant’s failure to perform its obligations hereunder or which in the ordinary course of things would be likely to result therefrom, including brokerage commissions, advertising expenses, expenses of remodeling any portion of the Premises for a new tenant (whether for the same or a different use), and any special concessions made to obtain a new tenant; plus

(e) At Landlord’s option, such other amounts in addition to or in lieu of the foregoing as may be permitted from time to time by Law.

As used in Sections 19.2.1(a) and (b), the “worth at the time of award” shall be computed by allowing interest at a rate per annum equal to the lesser of (i) the annual “Bank Prime Loan” rate cited in the Federal Reserve Statistical Release Publication G.13(415), published on the first Tuesday of each calendar month (or such other comparable index as Landlord shall reasonably designate if such rate ceases to be published) plus two (2) percentage points, or (ii) the highest rate permitted by Law. As used in Section 19.2.1(c), the “worth at the time of award” shall be computed by discounting such amount at the discount rate of the Federal Reserve Bank of San Francisco at the time of award plus 1%.

19.2.2 Landlord shall have the remedy described in California Civil Code § 1951.4 (lessor may continue 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). Accordingly, if Landlord does not elect to terminate this Lease on account of any default by Tenant, Landlord may, from time to time, without terminating this Lease, enforce all of its rights and remedies hereunder, including the right to recover all Rent as it becomes due.

19.2.3 Landlord shall at all times have the rights and remedies (which shall be cumulative with each other and cumulative and in addition to those rights and remedies available under Sections 19.2.1 and 19.2.2, or any Law or other provision hereof), without prior demand or notice except as required by Law, to seek any declaratory, injunctive or other equitable relief, and specifically enforce this Lease, or restrain or enjoin a violation or breach of any provision hereof.

19.3 Efforts to Relet. Unless Landlord provides Tenant with express notice to the contrary, no re-entry, repossession, repair, maintenance, change, alteration, addition, reletting, appointment of a receiver or other action or omission by Landlord shall (a) be construed as an election by Landlord to terminate this Lease or Tenant’s right to possession, or to accept a surrender of the Premises, or (b) operate to release Tenant from any of its obligations hereunder. Tenant waives, for Tenant and for all those claiming by, through or under Tenant, California Civil Code § 3275 and California Code of Civil Procedure §§ 1174(c) and 1179 and any existing or future rights to redeem or reinstate, by order or judgment of any court or by any legal process or writ, this Lease or Tenant’s right of occupancy of the Premises after any termination hereof.

19.4 Landlord Default. Landlord shall not be in default hereunder unless it fails to observe or perform any provision, covenant or condition hereof where such failure continues for 30 days after notice from Tenant; provided that if such failure cannot reasonably be cured within such 30-day period, Landlord shall not be in default as a result of such failure if Landlord diligently commences such cure within such period and thereafter diligently pursues such cure to completion. Before exercising any remedies for a default by Landlord, Tenant shall give notice and a reasonable time to cure to any Security Holder of which Tenant has been given notice.

20 LANDLORD EXCULPATION. Notwithstanding any contrary provision hereof: (a) the liability of the Landlord Parties to Tenant shall be limited to an amount equal to the lesser of (i) Landlord’s interest in the Building, or (ii) the equity interest Landlord would have in the Building if the Building were encumbered by third-party debt in an amount equal to 80% of the value of the Building (as such value is determined by Landlord); (b) Tenant shall look solely to Landlord’s interest in the Building for the recovery of any judgment or award against any Landlord Party; (c) no Landlord Party shall have any personal liability for any judgment or deficiency, and Tenant waives and releases such personal liability on behalf of itself and all parties claiming by, through or under Tenant; and (d) no Landlord Party shall be liable for any injury or damage to, or interference with, Tenant’s business, including loss of profits, loss of rents or other revenues, loss of business opportunity, loss of goodwill or loss of use, or for any form of special or consequential damage.

21 SECURITY DEPOSIT. Concurrently with its execution and delivery hereof, Tenant shall deposit with Landlord the Security Deposit, if any, as security for Tenant’s performance of its obligations hereunder. If Tenant breaches any provision hereof, Landlord may, at its option, without notice to Tenant, apply all or part of the Security Deposit to pay any past-due Rent, cure any breach by Tenant, or compensate Landlord for any other loss or damage caused by such breach. If Landlord so applies any portion of the Security Deposit, Tenant, within three (3) days after demand therefor, shall restore the Security Deposit to its original amount. The Security Deposit is not an advance payment of Rent or measure of damages. Any unapplied portion of the Security Deposit shall be returned to Tenant within 60 days after the latest to occur of (a) the expiration of the Term, (b) Tenant’s surrender of the Premises as required hereunder, or (c) determination of the final Rent due from Tenant. Landlord shall not be required to keep the Security Deposit separate from its other accounts.

22 RELOCATION. Intentionally Omitted.

23 COMMUNICATIONS AND COMPUTER LINES. All communications or computer wires and cables serving the Premises (“Lines”) shall be (a) installed in accordance with Section 8; and (b) clearly marked with adhesive plastic labels (or plastic tags attached to such Lines with wire) to show Tenant’s name, suite number, and the purpose of such Lines (i) every six (6) feet outside the Premises (including the electrical room risers and any Common Areas), and (ii) at their termination points. Landlord may designate specific contractors for work relating to vertical Lines. Sufficient spare cables and space for additional cables shall be maintained for other occupants, as reasonably determined by Landlord. Unless otherwise notified by Landlord, Tenant, at its expense and before the expiration or earlier termination hereof, shall remove any Lines installed by Tenant and repair any resulting damage.

24 PARKING. Tenant may park in the Building’s parking facilities (the “Parking Facility”), in common with other tenants of the Building, upon the following terms and conditions. Tenant shall not use more than the number of unreserved and/or reserved parking spaces set forth in Section 1.9. Tenant shall pay Landlord, in accordance with Section 3, any fees for the parking spaces described in Section 1.9. Tenant shall pay Landlord any fees, taxes or other charges imposed by any governmental or quasi-governmental agency in connection with the Parking Facility, to the extent such amounts are allocated to Tenant by Landlord. Landlord shall not be liable to Tenant, nor shall this Lease be affected, if any parking is impaired by (or any parking charges are imposed as a result of) any Law. Tenant shall comply with all rules and regulations established by Landlord from time to time for the orderly operation and use of the Parking Facility, including any sticker or other identification system and the prohibition of vehicle repair and maintenance activities in the Parking Facility. Landlord may, in its discretion, allocate and assign parking passes among Tenant and the other tenants in the Building provided that Tenant shall, at all times during the Term, have full access to and use of the number of parking spaces set forth in Section 1.9. Tenant’s use of the Parking Facility shall be at Tenant’s sole risk, and Landlord shall have no liability for any personal injury or damage to or theft of any vehicles or other property occurring in the Parking Facility or otherwise in connection with any use of the Parking Facility by Tenant, its employees or invitees. Landlord may alter the size, configuration, design, layout or any other aspect of the Parking Facility, and, in connection therewith, temporarily deny or restrict access to the Parking Facility, in each case without abatement of Rent or liability to Tenant. Landlord may delegate its responsibilities hereunder to a parking operator, in which case (i) such parking operator shall have all the rights of control reserved herein by Landlord, (ii) Tenant shall enter into a parking agreement with such parking operator, (iii) Tenant shall pay such parking operator, rather than Landlord, any charge established hereunder for the parking spaces, and (iv) Landlord shall have no liability for claims arising through acts or omissions of such parking operator except to the extent caused by Landlord’s gross negligence or willful misconduct. Tenant’s parking rights under this Section 24 are solely for the benefit of Tenant’s employees and such rights may not be transferred without Landlord’s prior consent, except pursuant to a Transfer permitted under Section 14.

25 MISCELLANEOUS.

25.1 Notices. No notice, demand, statement, designation, request, consent, approval, election or other communication given hereunder (“Notice”) shall be binding upon either party unless (a) it is in writing; (b) it is (i) sent by certified or registered mail, postage prepaid, return receipt requested,

(ii) delivered by a nationally recognized courier service, or (iii) delivered personally; and (c) it is sent or delivered to the address set forth in Section 1.10 or 1.11, as applicable, or to such other place (other than a P.O. box) as the recipient may from time to time designate in a Notice to the other party. Any Notice shall be deemed received on the earlier of the date of actual delivery or the date on which delivery is refused, or, if Tenant is the recipient and has vacated its notice address without providing a new notice address, three (3) days after the date the Notice is deposited in the U.S. mail or with a courier service as described above.

25.2 Force Majeure. If either party is prevented from performing any obligation hereunder by any strike, act of God, war, terrorist act, shortage of labor or materials, governmental action, civil commotion or other cause beyond such party’s reasonable control (“Force Majeure”), such obligation shall be excused during (and any time period for the performance of such obligation shall be extended by) the period of such prevention; provided, however, that this Section 25.2 shall not (a) permit Tenant to hold over in the Premises after the expiration or earlier termination hereof, or (b) excuse any of Tenant’s obligations under Sections 3, 4, 5, 21 or 25.3 or any of Tenant’s obligations whose nonperformance would interfere with another occupant’s use, occupancy or enjoyment of its premises or the Project.

25.3 Representations and Covenants. Tenant represents, warrants and covenants that (a) Tenant is, and at all times during the Term will remain, duly organized, validly existing and in good standing under the Laws of the state of its formation and qualified to do business in the state of California; (b) neither Tenant’s execution of nor its performance under this Lease will cause Tenant to be in violation of any agreement or Law; (c) Tenant has not (i) made a general assignment for the benefit of creditors, (ii) filed a voluntary petition in bankruptcy or suffered the filing of an involuntary petition by creditors, (iii) suffered the appointment of a receiver to take possession of all or substantially all of its assets, (iv) suffered the attachment or other judicial seizure of all or substantially all of its assets, (v) admitted in writing its inability to pay its debts as they come due, or (vi) made an offer of settlement, extension or composition to its creditors generally; and (d) to Tenant’s actual knowledge, each party that (other than through the passive ownership of interests traded on a recognized securities exchange) constitutes, owns, controls, or is owned or controlled by Tenant or any guarantor or subtenant of Tenant is not, and at no time during the Term will be, (i) in violation of any Laws relating to terrorism or money laundering, or (ii) among the parties identified on any list compiled pursuant to Executive Order 13224 for the purpose of identifying suspected terrorists or on the most current list published by the U.S. Treasury Department Office of Foreign Assets Control at its official website, xxxx://xxx.xxxxx.xxx/xxxx/xxxxxx.xxx or any replacement website or other replacement official publication of such list.

25.4 Signs. Landlord shall include Tenant’s name in any tenant directory located in the lobby on the first floor of the Building. If the Premises is located on a multi-tenant floor, Landlord, at Tenant’s cost, shall provide initial identifying signage for Tenant which shall be comparable to that provided by Landlord on similar floors in the Building. Tenant may not install (a) any signs outside the Premises, or (b) without Landlord’s prior consent in its sole and absolute discretion, any signs, window coverings, blinds or similar items that are visible from outside the Premises.

25.5 Attorneys’ Fees. In any action or proceeding between the parties, including any appellate or alternative dispute resolution proceeding, the prevailing party may recover from the other party all of its costs and expenses in connection therewith, including reasonable attorneys’ fees and costs. Tenant shall pay all reasonable attorneys’ fees and other fees and costs that Landlord incurs in interpreting or enforcing this Lease or otherwise protecting its rights hereunder (a) where Tenant has failed to pay Rent when due, or (b) in any bankruptcy case, assignment for the benefit of creditors, or other insolvency, liquidation or reorganization proceeding involving Tenant or this Lease.

25.6 Brokers. Tenant represents to Landlord that it has dealt only with Tenant’s Broker as its broker in connection with this Lease. Tenant shall indemnify, defend, and hold Landlord harmless from all claims of any brokers, other than Tenant’s Broker, claiming to have represented Tenant in connection with this Lease. Landlord shall indemnify, defend and hold Tenant harmless from all claims of any brokers, including Landlord’s Broker, claiming to have represented Landlord in connection with this Lease. Tenant acknowledges that any Affiliate of Landlord that is involved in the negotiation of this Lease is representing only Landlord, and that any assistance rendered by any agent or employee of such Affiliate in connection with this Lease or any subsequent amendment or other document related hereto has been or will be rendered as an accommodation to Tenant solely in furtherance of consummating the transaction on behalf of Landlord, and not as agent for Tenant.

25.7 Governing Law; WAIVER OF TRIAL BY JURY. This Lease shall be construed and enforced in accordance with the Laws of the State of California. THE PARTIES WAIVE, TO THE FULLEST EXTENT PERMITTED BY LAW, THE RIGHT TO TRIAL BY JURY IN ANY LITIGATION ARISING OUT OF OR RELATING TO THIS LEASE, THE RELATIONSHIP OF LANDLORD AND TENANT, TENANT’S USE OR OCCUPANCY OF THE PREMISES, AND/OR ANY CLAIM FOR INJURY OR DAMAGE OR ANY EMERGENCY OR STATUTORY REMEDY.

25.8 Waiver of Statutory Provisions. Each party waives California Civil Code §§ 1932(2)

and 1933(4). Tenant waives (a) any rights under (i) California Civil Code §§ 1932(1), 1941, 1942, 1950.7 or any similar Law, or (ii) California Code of Civil Procedure § 1265.130; and (b) any right to terminate this Lease under California Civil Code § 1995.310.

25.9 Interpretation. As used herein, the capitalized term “Section” refers to a section hereof unless otherwise specifically provided herein. As used in this Lease, the terms “herein,” “hereof,” “hereto” and “hereunder” refer to this Lease and the term “include” and its derivatives are not limiting. Any reference herein to “any part” or “any portion” of the Premises, the Property or any other property shall be construed to refer to all or any part of such property. Wherever this Lease requires Tenant to comply with any Law, rule, regulation, procedure or other requirement or prohibits Tenant from engaging in any particular conduct, this Lease shall be deemed also to require Tenant to use commercially reasonable efforts to cause each of its employees, licensees, invitees and subtenants, and any other party claiming by, through or under Tenant, to comply with such requirement or refrain from engaging in such conduct, as the case may be. Tenant waives the benefit of any rule that a written agreement shall be construed against the drafting party.

25.10 Entire Agreement. This Lease sets forth the entire agreement between the parties relating to the subject matter hereof and supersedes any previous agreements (none of which shall be used to interpret this Lease). Tenant acknowledges that in entering into this Lease it has not relied upon any representation, warranty or statement, whether oral or written, not expressly set forth herein. This Lease can be modified only by a written agreement signed by both parties.

25.11 Other. Landlord, at its option, may cure any Default, without waiving any right or remedy or releasing Tenant from any obligation, in which event Tenant shall pay Landlord, upon demand, the cost of such cure. If any provision hereof is void or unenforceable, no other provision shall be affected. Submission of this instrument for examination or signature by Tenant does not constitute an option or offer to lease, and this instrument is not binding until it has been executed and delivered by both parties. If Tenant is comprised of two or more parties, their obligations shall be joint and several. Time is of the essence with respect to the performance of every provision hereof in which time of performance is a factor. So long as Tenant performs its obligations hereunder, Tenant shall have peaceful and quiet possession of the Premises against any party claiming by, through or under Landlord, subject to the terms hereof. Landlord may transfer its interest herein, in which event Landlord shall be released from, Tenant shall look solely to the transferee for the performance of, and the transferee shall be deemed to have assumed, all of Landlord’s obligations arising hereunder after the date of such transfer (including the return of any Security Deposit) and Tenant shall attorn to the transferee. Landlord reserves all rights not expressly granted to Tenant hereunder, including the right to make alterations to the Project. No rights to any view or to light or air over any property are granted to Tenant hereunder. The expiration or termination hereof shall not relieve either party of any obligation that accrued before, or continues to accrue after, such expiration or termination.

[SIGNATURES ARE ON THE FOLLOWING PAGE]

IN WITNESS WHEREOF, Landlord and Tenant have caused this Lease to be executed the day and date first above written.

LANDLORD:

TRIZEC SORRENTO TOWERS, LLC, a Delaware limited liability company

By:		/s/ Xxxxx Xxxxxxxx
		Name:		Xxxxx Xxxxxxxx
		Title:		SVP


TENANT:

OPTIMER PHARMACEUTICALS, INC.,
a Delaware corporation

By:
Name:
Title:
		[chairman][president][vice-president]

By:		/s/ Xxxx Xxxxxx
Name:		Xxxx Xxxxxx
Title:	CFO
			[secretary][assistant secretary][chief
			financial officer][assistant treasurer]

EXHIBIT A

SORRENTO TOWERS NORTH

OUTLINE OF PREMISES

EXHIBIT B

SORRENTO TOWERS NORTH

WORK LETTER

As used in this Exhibit B (this “Work Letter”), the following terms shall have the following meanings: “Agreement” means the Lease of which this Work Letter is a part. “Tenant Improvements” means all improvements to be constructed in the Premises pursuant to this Work Letter. “Tenant Improvement Work” means the construction of the Tenant Improvements in accordance with the Approved Plans, together with any related work in the Premises (including demolition) that is necessary to construct the Tenant Improvements.

1 ALLOWANCE. [Intentionally Omitted.]

2 PLANS.

2.1 Approved Plans. Landlord and Tenant acknowledge that they have approved the space plan attached hereto as Exhibit B-1 (the “Approved Plans”) prepared by Xxxxxxx & Xxxxxxx (the “Architect”). All Tenant Improvements shall be performed using building standard materials and finishes and shall include new paint, carpet and base boards throughout the Premises. Tenant shall select paint and carpet from Landlord’s in-stock building standard selections. Tenant shall be responsible for ensuring that all elements of the design of the Approved Plans are suitable for Tenant’s use of the Premises, and neither the preparation of the Approved Plans by the Architect or Landlord’s engineers nor Landlord’s approval of the Approved Plans shall relieve Tenant from such responsibility.

2.2 Time Deadlines. Tenant shall use its best efforts to cooperate with Landlord and its architect, engineers and other consultants to obtain the permits for the Tenant Improvement Work as soon as possible after the execution of this Agreement, and Tenant shall meet with Landlord, in accordance with a schedule determined by Landlord, to discuss Tenant’s progress.

3 CONSTRUCTION.

3.1 Contractor. A contractor designated by Landlord (the “Contractor”) shall perform the Tenant Improvement Work. In addition, Landlord may select and/or approve of any subcontractors, mechanics and materialmen used in connection with the performance of the Tenant Improvement Work.

3.2 Cost of Tenant Improvements. Except as provided in Section 3.3.3 below, the Tenant Improvement Work shall be performed at Landlord’s expense.

3.3 Construction.

3.3.1 Over-Allowance Amount. [Intentionally Omitted.]

3.3.2 Landlord’s Retention of Contractor. Landlord shall independently retain the Contractor to perform the Tenant Improvement Work in accordance with the Approved Plans.

3.3.3 Revisions to Approved Plans. If Tenant requests any revision to the Approved Plans, Landlord shall provide Tenant with notice approving or reasonably disapproving such revision, and, if Landlord approves such revision, Landlord shall have such revision made and delivered to Tenant, together with notice of any resulting change in the cost of the Tenant Improvement Work, within five (5) business days after the later of Landlord’s receipt of such request or the mutual execution and delivery of this Agreement if such revision is not material, and within such longer period of time as may be reasonably necessary (but not more than 10 business days after the later of such receipt or such execution and delivery) if such revision is material, whereupon Tenant, within two (2) business days, shall notify Landlord whether it desires to proceed with such revision. If Landlord has commenced performance of the Tenant Improvement Work, then, in the absence of such authorization, Landlord shall have the option to continue such performance disregarding such revision. Tenant shall reimburse Landlord, immediately upon demand, for (a) the cost of preparing any such revision, and (b) any increase in the cost of the Tenant Improvement Work that results from such revision. It shall be deemed reasonable for Landlord to disapprove any proposed revision to the Approved Plans that, in Landlord’s reasonable judgment, would fail to comply with applicable laws or Landlord’s requirements for avoiding aesthetic, engineering or other conflicts with the design and function of the balance of the Building.

3.3.4 Contractor’s Warranties. Notwithstanding any contrary provision of the Lease, if, within 10 months after substantial completion of the Tenant Improvements, Tenant provides notice to Landlord of any latent defect in the Tenant Improvements, Landlord shall, at its option, either (a) assign

to Tenant any right Landlord may have under the Construction Contract (defined below) to require the Contractor to correct, or pay for the correction of, such latent defect, or (b) at Landlord’s expense, use reasonable efforts to enforce such right directly against the Contractor for Tenant’s benefit. As used herein, “Construction Contract” means the construction contract between Landlord and the Contractor pursuant to which the Tenant Improvements will be constructed.

4 COMPLETION.

4.1 Ready for Occupancy. For purposes of Section 1.3.2 of this Agreement, the Premises shall be deemed “Ready for Occupancy” upon the substantial completion of the Tenant Improvements. Subject to Section 4.2 below, the Tenant Improvements shall be deemed to be “substantially complete” upon the completion of construction of the Tenant Improvements pursuant to the Approved Plans (as reasonably determined by Landlord), with the exception of any details of construction, mechanical adjustment or any other similar matter the non-completion of which does not materially interfere with Tenant’s use of the Premises.

4.2 Tenant Delay. If (a) the substantial completion of the Tenant Improvements is delayed (a “Tenant Delay”) as a result of (i) Tenant’s failure to timely approve any matter requiring Tenant’s approval; (ii) any breach by Tenant of this Work Letter or the Lease; (iii) any change (or Tenant’s request for any change) in the Approved Plans (except to the extent such delay results from any failure of Landlord to comply with its obligations under Section 3.3.3 above); (iv) Tenant’s requirement for materials, components, finishes or improvements that are not available in a commercially reasonable time given the anticipated date of substantial completion of the Tenant Improvements as set forth in this Agreement; or (v) any other act or omission of Tenant or any of its agents, employees or representatives; and (b) Landlord provides written notice to Tenant of such Tenant Delay and Tenant fails to cure such Tenant Delay within a commercially reasonable amount of time, then, notwithstanding any contrary provision of this Agreement, and regardless of when the Tenant Improvements are actually substantially completed, the Tenant Improvements shall be deemed to be substantially completed on the date on which the Tenant Improvements would have been substantially completed if no such Tenant Delay had occurred.

5 MISCELLANEOUS. Notwithstanding any contrary provision of this Agreement, if Tenant defaults under this Agreement before the Tenant Improvement Work is completed, Landlord’s obligations under this Work Letter shall be excused until such default is cured and Tenant shall be responsible for any resulting delay in the completion of the Tenant Improvement Work. This Work Letter shall not apply to any space other than the Premises.

EXHIBIT B-1

APPROVED SPACE PLAN

EXHIBIT C

SORRENTO TOWERS NORTH

CONFIRMATION LETTER

, 20

To:

Re: Office Lease (the “Lease”) dated , 20 , between , a (“Landlord”), and , a (“Tenant”), concerning Suite on the floor of the building located at , California.

Lease ID:

Business Unit Number:

Dear :

In accordance with the Lease, Tenant accepts possession of the Premises and confirms the following:

1. The Commencement Date is and the Expiration Date is .

2. The exact number of rentable square feet within the Premises is square feet, subject to Section 2.1.1 of the Lease.

3. Tenant’s Share, based upon the exact number of rentable square feet within the Premises, is %, subject to Section 2.1.1 of the Lease.

Please acknowledge the foregoing by signing all three (3) counterparts of this letter in the space provided below and returning two (2) fully executed counterparts to my attention. Please note that, pursuant to Section 2.1.1 of the Lease, if Tenant fails to execute and return (or, by notice to Landlord, reasonably object to) this letter within five (5) days after receiving it, Tenant shall be deemed to have executed and returned it without exception.

	“Landlord”:

	,
	a

	By:
	Name:
	Title:

Agreed and Accepted as of , 200 .

“Tenant”:

,
a

By:
Name:
Title:

EXHIBIT D

SORRENTO TOWERS NORTH

RULES AND REGULATIONS

Tenant shall comply with the following rules and regulations (as modified or supplemented from time to time, the “Rules and Regulations”). Landlord shall not be responsible to Tenant for the nonperformance of any of the Rules and Regulations by any other tenants or occupants of the Project. In the event of any conflict between the Rules and Regulations and the other provisions of this Lease, the latter shall control.

1. Tenant shall not alter any lock or install any new or additional locks or bolts on any doors or windows of the Premises without obtaining Landlord’s prior consent. Tenant shall bear the cost of any lock changes or repairs required by Tenant. Two (2) keys will be furnished by Landlord for the Premises, and any additional keys required by Tenant must be obtained from Landlord at a reasonable cost to be established by Landlord. Upon the termination of this Lease, Tenant shall restore to Landlord all keys of stores, offices and toilet rooms furnished to or otherwise procured by Tenant, and if any such keys are lost, Tenant shall pay Landlord the cost of replacing them or of changing the applicable locks if Landlord deems such changes necessary.

2. All doors opening to public corridors shall be kept closed at all times except for normal ingress and egress to the Premises.

3. Landlord may close and keep locked all entrance and exit doors of the Building during such hours as are customary for comparable buildings in the vicinity of the Building. Tenant shall cause its employees, agents, contractors, invitees and licensees who use Building doors during such hours to securely close and lock them after such use. Any person entering or leaving the Building during such hours, or when the Building doors are otherwise locked, may be required to sign the Building register, and access to the Building may be refused unless such person has proper identification or has a previously arranged access pass. Landlord will furnish passes to persons for whom Tenant requests them. Tenant shall be responsible for all persons for whom Tenant requests passes and shall be liable to Landlord for all acts of such persons. Landlord and its agents shall not be liable for damages for any error with regard to the admission or exclusion of any person to or from the Building. In case of invasion, mob, riot, public excitement or other commotion, Landlord may prevent access to the Building or the Project during the continuance thereof by any means it deems appropriate for the safety and protection of life and property.

4. No furniture, freight or equipment shall be brought into the Building without prior notice to Landlord. All moving activity into or out of the Building shall be scheduled with Landlord and done only at such time and in such manner as Landlord designates. Landlord may prescribe the weight, size and position of all safes and other heavy property brought into the Building and also the times and manner of moving the same in and out of the Building. Safes and other heavy objects shall, if considered necessary by Landlord, stand on supports of such thickness as is necessary to properly distribute the weight. Landlord will not be responsible for loss of or damage to any such safe or property. Any damage to the Building, its contents, occupants or invitees resulting from Tenant’s moving or maintaining any such safe or other heavy property shall be the sole responsibility and expense of Tenant (notwithstanding Sections 7 and 10.4 of this Lease).

5. No furniture, packages, supplies, equipment or merchandise will be received in the Building or carried up or down in the elevators, except between such hours, in such specific elevator and by such personnel as shall be designated by Landlord.

6. Employees of Landlord shall not perform any work or do anything outside their regular duties unless under special instructions from Landlord.

7. No sign, advertisement, notice or handbill shall be exhibited, distributed, painted or affixed by Tenant on any part of the Premises or the Building without Landlord’s prior consent. Tenant shall not disturb, solicit, peddle or canvass any occupant of the Project.

8. The toilet rooms, urinals, wash bowls and other apparatus shall not be used for any purpose other than that for which they were constructed, and no foreign substance shall be thrown therein. Notwithstanding Sections 7 and 10.4 of this Lease, Tenant shall bear the expense of any breakage, stoppage or damage resulting from any violation of this rule by Tenant or any of its employees, agents, contractors, invitees or licensees.

9. Tenant shall not overload the floor of the Premises, or xxxx, drive nails or screws or drill into the partitions, woodwork or drywall of the Premises, or otherwise deface the Premises, without

Landlord’s prior consent. Tenant shall not purchase bottled water, ice, towel, linen, maintenance or other like services from any person not approved by Landlord.

10. Except for 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 in the Premises without Landlord’s prior consent.

11. No inflammable, explosive or dangerous fluids or substances shall be used or kept by Tenant in the Premises or about the Project, except for such substances as are typically found in similar premises used for general office purposes and are being used by Tenant in a safe manner and in accordance with all Laws. Without limiting the foregoing, Tenant shall not, without Landlord’s prior consent, use, store, install, disturb, spill, remove, release or dispose of, within or about the Premises or any other portion of the Project, any asbestos-containing materials or any solid, liquid or gaseous material now or subsequently considered toxic or hazardous under the provisions of 42 U.S.C. Section 9601 et seq. or any other applicable environmental Law (“Hazardous Materials”). Tenant shall comply with all Laws pertaining to and governing the use of Hazardous Materials by Tenant and shall remain solely liable for the costs of abatement and removal resulting from Tenant’s breach of this Section 11 provided that Landlord shall, at no cost to Tenant (and not as an Expense), remove or remediate any Hazardous Materials in, on or under the Project to the extent required under applicable Laws, except where such removal or remediation is Tenant’s responsibility pursuant to this Section 11.

12. Tenant shall not, without Landlord’s prior consent, use any method of heating or air conditioning other than that supplied by Landlord.

13. Tenant shall not use or keep any foul or noxious gas or substance in or on the Premises, or occupy or use the Premises in a manner offensive or objectionable to Landlord or other occupants of the Project by reason of noise, odors or vibrations, or interfere with other occupants or those having business therein, whether by the use of any musical instrument, radio, CD player or otherwise. Tenant shall not throw anything out of doors, windows or skylights or down passageways.

14. Tenant shall not bring into or keep within the Project, the Building or the Premises any animals (other than service animals), birds, aquariums, or, except in areas designated by Landlord, bicycles or other vehicles.

15. No cooking shall be done in the Premises, nor shall the Premises be used for lodging, for living quarters or sleeping apartments, 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 invitees, provided that such use complies with all Laws.

16. The Premises shall not be used for manufacturing or for the storage of merchandise except to the extent such storage may be incidental to the Permitted Use. Tenant shall not occupy the Premises as an office for a messenger-type operation or dispatch office, public stenographer or typist, or for the manufacture or sale of liquor, narcotics or tobacco, or as a medical office, a xxxxxx or manicure shop, or an employment bureau, without Landlord’s prior consent. Tenant shall not engage or pay any employees in the Premises except those actually working for Tenant in the Premises, nor advertise for laborers giving an address at the Premises.

17. Landlord may exclude from the Project any person who, in Landlord’s judgment, is intoxicated or under the influence of liquor or drugs, or who violates any of these Rules and Regulations.

18. Tenant shall not loiter in or on the entrances, corridors, sidewalks, lobbies, courts, halls, stairways, elevators, vestibules or any Common Areas for the purpose 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.

19. Tenant shall not waste electricity, water or air conditioning, shall cooperate with Landlord to ensure the most effective operation of the Building’s heating and air conditioning system, and shall not attempt to adjust any controls.

20. Tenant shall store all its trash and garbage inside the Premises. No material shall be placed in the trash or garbage receptacles if, under Law, it may not be disposed of in the ordinary and customary manner of disposing of trash and garbage in the vicinity of the Building. All trash, garbage and refuse disposal shall be made only through entryways and elevators provided for such purposes at such times as Landlord shall designate.

21. Tenant shall comply with all safety, fire protection and evacuation procedures and regulations established by Landlord or any governmental agency.

22. Any persons employed by Tenant to do janitorial work shall be subject to Landlord’s prior consent and, while in the Building and outside of the Premises, shall be subject to the control and direction of the Building manager (but not as an agent or employee of such manager or Landlord), and Tenant shall be responsible for all acts of such persons.

23. No awning or other projection shall be attached to the outside walls of the Building without Landlord’s prior consent. Other than Landlord’s Building-standard window coverings, no curtains, blinds, shades or screens shall be attached to or hung in, or used in connection with, any window or door of the Premises. All electrical ceiling fixtures hung in the Premises or spaces along the perimeter of the Building must be fluorescent and/or of a quality, type, design and a warm white bulb color approved in advance by Landlord. Neither the interior nor exterior of any windows shall be coated or otherwise sunscreened without Landlord’s prior consent. Tenant shall abide by Landlord’s regulations concerning the opening and closing of window coverings.

24. Tenant shall not obstruct any sashes, sash doors, skylights, windows or doors that reflect or admit light or air into the halls, passageways or other public places in the Building, nor shall Tenant place any bottles, parcels or other articles on the windowsills.

25. Tenant must comply with requests by Landlord concerning the informing of their employees of items of importance to the Landlord.

26. Tenant must comply with the State of California “No-Smoking” law set forth in California Labor Code Section 6404.5 and with any local “No-Smoking” ordinance that is not superseded by such law.

27. Tenant shall cooperate in any reasonable safety or security program developed by Landlord or required by Law.

28. All office equipment of an electrical or mechanical nature shall be placed by Tenant in the Premises in settings approved by Landlord, to absorb or prevent any vibration, noise or annoyance.

29. Tenant shall not use any hand trucks except those equipped with rubber tires and rubber side guards.

30. No auction, liquidation, fire sale, going-out-of-business or bankruptcy sale shall be conducted in the Premises without Landlord’s prior consent.

31. Without Landlord’s prior consent, Tenant shall not use the name of the Project or Building or use pictures or illustrations of the Project or Building in advertising or other publicity or for any purpose other than as the address of the business to be conducted by Tenant in the Premises.

Landlord may from time to time modify or supplement these Rules and Regulations in a manner that, in Landlord’s reasonable judgment, is appropriate for the management, safety, care and cleanliness of the Premises, the Building, the Common Areas and the Project, for the preservation of good order therein, and for the convenience of other occupants and tenants thereof. Landlord may waive any of these Rules and Regulations for the benefit of any tenant, but no such waiver shall be construed as a waiver of such Rule and Regulation in favor of any other tenant nor prevent Landlord from thereafter enforcing such Rule and Regulation against any tenant.

EXHIBIT E

SORRENTO TOWERS NORTH

JUDICIAL REFERENCE

IF (AND ONLY IF) THE JURY-WAIVER PROVISIONS OF SECTION 25.7 OF THIS LEASE ARE NOT ENFORCEABLE UNDER CALIFORNIA LAW, THE PROVISIONS SET FORTH BELOW SHALL APPLY.

It is the desire and intention of the parties to agree upon a mechanism and procedure under which controversies and disputes arising out of this Lease or related to the Premises will be resolved in a prompt and expeditious manner. Accordingly, except with respect to actions for unlawful or forcible detainer or with respect to the prejudgment remedy of attachment, any action, proceeding or counterclaim brought by either party hereto against the other (and/or against its officers, directors, employees, agents or subsidiaries or affiliated entities) on any matters arising out of or in any way connected with this Lease, Tenant’s use or occupancy of the Premises and/or any claim of injury or damage, whether sounding in contract, tort, or otherwise, shall be heard and resolved by a referee under the provisions of the California Code of Civil Procedure, Sections 638 — 645.1, inclusive (as same may be amended, or any successor statute(s) thereto) (the “Referee Sections”). Any fee to initiate the judicial reference proceedings and all fees charged and costs incurred by the referee shall be paid by the party initiating such procedure (except that if a reporter is requested by either party, then a reporter shall be present at all proceedings where requested and the fees of such reporter – except for copies ordered by the other parties – shall be borne by the party requesting the reporter); provided however, that allocation of the costs and fees, including any initiation fee, of such proceeding shall be ultimately determined in accordance with Section 25.5 of this Lease. The venue of the proceedings shall be in the county in which the Premises is located. Within 10 days of receipt by any party of a request to resolve any dispute or controversy pursuant to this Exhibit E, the parties shall agree upon a single referee who shall try all issues, whether of fact or law, and report a finding and judgment on such issues as required by the Referee Sections. If the parties are unable to agree upon a referee within such 10-day period, then any party may thereafter file a lawsuit in the county in which the Premises is located for the purpose of appointment of a referee under the Referee Sections. If the referee is appointed by the court, the referee shall be a neutral and impartial retired judge with substantial experience in the relevant matters to be determined, from Jams/Endispute, Inc., the American Arbitration Association or similar mediation/arbitration entity. The proposed referee may be challenged by any party for any of the grounds listed in the Referee Sections. The referee shall have the power to decide all issues of fact and law and report his or her decision on such issues, and to issue all recognized remedies available at law or in equity for any cause of action that is before the referee, including an award of attorneys’ fees and costs in accordance with this Lease. The referee shall not, however, have the power to award punitive damages, nor any other damages that are not permitted by the express provisions of this Lease, and the parties waive any right to recover any such damages. The parties may conduct all discovery as provided in the California Code of Civil Procedure, and the referee shall oversee discovery and may enforce all discovery orders in the same manner as any trial court judge, with rights to regulate discovery and to issue and enforce subpoenas, protective orders and other limitations on discovery available under California Law. The reference proceeding shall be conducted in accordance with California Law (including the rules of evidence), and in all regards, the referee shall follow California Law applicable at the time of the reference proceeding. The parties shall promptly and diligently cooperate with one another and the referee, and shall perform such acts as may be necessary to obtain a prompt and expeditious resolution of the dispute or controversy in accordance with the terms of this Exhibit E. In this regard, the parties agree that the parties and the referee shall use best efforts to ensure that (a) discovery be conducted for a period no longer than 6 months from the date the referee is appointed, excluding motions regarding discovery, and (b) a trial date be set within 9 months of the date the referee is appointed. In accordance with Section 644 of the California Code of Civil Procedure, the decision of the referee upon the whole issue must stand as the decision of the court, and upon the filing of the statement of decision with the clerk of the court, or with the judge if there is no clerk, judgment may be entered thereon in the same manner as if the action had been tried by the court. Any decision of the referee and/or judgment or other order entered thereon shall be appealable to the same extent and in the same manner that such decision, judgment, or order would be appealable if rendered by a judge of the superior court in which venue is proper hereunder. The referee shall in his/her statement of decision set forth his/her findings of fact and conclusions of law. The parties intend this general reference agreement to be specifically enforceable in accordance with the Code of Civil Procedure. Nothing in this Exhibit E shall prejudice the right of any party to obtain provisional relief or other equitable remedies from a court of competent jurisdiction as shall otherwise be available under the Code of Civil Procedure and/or applicable court rules.

EXHIBIT F

SORRENTO TOWERS NORTH

ADDITIONAL PROVISIONS

1. INTENTIONALLY OMITTED.

2. RENEWAL OPTION.

2..01. Grant of Option; Conditions. Tenant shall have the right to extend the Term (the “Renewal Option”) for one additional period of five (5) years commencing on the day following the Expiration Date of the initial Term and ending on the 5th anniversary of the Expiration Date (the “Renewal Term”), if:

a. Landlord receives notice of exercise (“Initial Renewal Notice”) not less than nine (9) full calendar months prior to the expiration of the initial Term and not more than twelve (12) full calendar months prior to the expiration of the initial Term; and

b. Tenant is not in default under the Lease beyond any applicable cure periods at the time that Tenant delivers its Initial Renewal Notice or at the time Tenant delivers its Binding Notice (as defined below); and

c. No more than 50% of the Premises is sublet (other than pursuant to a Permitted Transfer, as defined in Section 14.8 of the Lease) at the time that Tenant delivers its Initial Renewal Notice or at the time Tenant delivers its Binding Notice; and

d. The Lease has not been assigned (other than pursuant to a Permitted Transfer, as defined in Section 14.8 of the Lease) prior to the date that Tenant delivers its Initial Renewal Notice or prior to the date Tenant delivers its Binding Notice; and

e. Tenant (or other entity in connection with a Permitted Transfer) is occupying at least 50% of the Premises at the time that Tenant delivers its Initial Renewal Notice or at the time Tenant delivers its Binding Notice.

2.02. Terms Applicable to Premises During Renewal Term.

a. The initial Base Rent rate per rentable square foot for the Premises during the Renewal Term shall equal the Prevailing Market (hereinafter defined) rate per rentable square foot for the Premises. Base Rent during the Renewal Term shall increase, if at all, in accordance with the increases assumed in the determination of Prevailing Market rate. Base Rent attributable to the Premises shall be payable in monthly installments in accordance with the terms and conditions of the Lease.

b. Tenant shall pay Additional Rent (i.e. Taxes and Expenses) for the Premises during the Renewal Term in accordance with the Lease, and the manner and method in which Tenant reimburses Landlord for Tenant’s share of Taxes and Expenses and the Base Year, if any, applicable to such matter, shall be some of the factors considered in determining the Prevailing Market rate for the Renewal Term. The Base Year shall be updated to the calendar year in which the Renewal Term commences.

2.03. Procedure for Determining Prevailing Market. Within 30 days after receipt of Tenant’s Initial Renewal Notice, Landlord shall advise Tenant of the applicable Base Rent rate for the Premises for the Renewal Term (“Landlord’s Renewal Base Rent Notice”), which shall reflect the Prevailing Market rate (described below in this Section 2.05) per rentable square foot for the Premises. Tenant, within 15 days after Tenant’s receipt of Landlord’s Renewal Base Rent Notice, shall either (i) give Landlord written notice (“Binding Notice”) that Tenant accepts the Base Rent rate for the Premises for the Renewal Term described in Landlord’s Renewal Base Rent Notice, in which event the parties shall enter into the Renewal Amendment as described in the “Renewal Amendment”) provision below, or (ii) if Tenant disagrees with Landlord’s determination of the applicable Base Rent rate for the Premises during the Renewal Term, provide Landlord with written notice of rejection (the “Rejection Notice”). If Tenant fails to provide Landlord with

either a Binding Notice or Rejection Notice within such 15 day period, Tenant’s Renewal Option shall be null and void and of no further force and effect. If Tenant provides Landlord with a Binding Notice, Landlord and Tenant shall enter into the Renewal Amendment (as defined below) upon the terms and conditions set forth herein. If Tenant provides Landlord with a Rejection Notice, Landlord and Tenant shall work together in good faith to agree upon the Prevailing Market rate for the Premises during the Renewal Term. When Landlord and Tenant have agreed upon the Prevailing Market rate for the Premises, such agreement shall be reflected in a written agreement between Landlord and Tenant, whether in a letter or otherwise (and such shall be deemed a “Binding Notice”, for purposes herein), and Landlord and Tenant shall enter into the Renewal Amendment in accordance with the terms and conditions hereof. Notwithstanding the foregoing, if Landlord and Tenant are unable to agree upon the Prevailing Market rate for the Premises within 30 days after the date Tenant provides Landlord with the Rejection Notice, Tenant, by written notice to Landlord (the “Arbitration Notice”) within 5 days after the expiration of such 30 day period, shall have the right to have the Prevailing Market rate determined in accordance with the arbitration procedures described in Section 2.04 below. If Landlord and Tenant are unable to agree upon the Prevailing Market rate for the Premises within the 30 day period described and Tenant fails to timely exercise its right to arbitrate, Tenant’s Renewal Option shall be deemed to be null and void and of no further force and effect.

2.04. Arbitration Procedure.

a. If Tenant provides Landlord with an Arbitration Notice, Landlord and Tenant, within 5 days after the date of the Arbitration Notice, shall each simultaneously submit to the other, in a sealed envelope, its good faith estimate of the Prevailing Market rate for the Premises during the Renewal Term (collectively referred to as the “Estimates”). If the higher of such Estimates is not more than 105% of the lower of such Estimates, then Prevailing Market rate shall be the average of the two Estimates. If the Prevailing Market rate is not resolved by the exchange of Estimates, then, within 7 days after the exchange of Estimates, Landlord and Tenant shall each select an appraiser to determine which of the two Estimates most closely reflects the Prevailing Market rate for the Premises during the Renewal Term. Each appraiser so selected shall be certified as an MAI appraiser or as an ASA appraiser and shall have had at least 5 years experience within the previous 10 years as a real estate appraiser working in San Diego, California, with working knowledge of current rental rates and practices. For purposes hereof, an “MAI” appraiser means an individual who holds an MAI designation conferred by, and is an independent member of, the American Institute of Real Estate Appraisers (or its successor organization, or in the event there is no successor organization, the organization and designation most similar), and an “ASA” appraiser means an individual who holds the Senior Member designation conferred by, and is an independent member of, the American Society of Appraisers (or its successor organization, or, in the event there is no successor organization, the organization and designation most similar).

b. Upon selection, Landlord’s and Tenant’s appraisers shall work together in good faith to agree upon which of the two Estimates most closely reflects the Prevailing Market rate for the Premises. The Estimate chosen by such appraisers shall be binding on both Landlord and Tenant as the Base Rent rate for the Premises during the Renewal Term. If either Landlord or Tenant fails to appoint an appraiser within the 7 day period referred to above, the appraiser appointed by the other party shall be the sole appraiser for the purposes hereof. If the two appraisers cannot agree upon which of the two Estimates most closely reflects the Prevailing Market within 20 days after their appointment, then, within 10 days after the expiration of such 20 day period, the two appraisers shall select a third appraiser meeting the aforementioned criteria. Once the third appraiser (i.e. arbitrator) has been selected as provided for above, then, as soon thereafter as practicable but in any case within 14 days, the arbitrator shall make his determination of which of the two Estimates most closely reflects the Prevailing Market rate and such Estimate shall be binding on both Landlord and Tenant as the Base Rent rate for the Premises and the parties shall enter into the Renewal Amendment as described below. If the arbitrator believes that expert advice would materially assist him, he may retain one or more qualified persons to provide such expert advice. The parties shall share equally in the costs of the arbitrator and of any experts retained by the arbitrator. Any fees of any appraiser, counsel or experts engaged directly by Landlord or Tenant, however, shall be borne by the party retaining such appraiser, counsel or expert.

c. If the Prevailing Market rate has not been determined by the commencement date of the Renewal Term, Tenant shall pay Base Rent upon the terms and conditions in effect during the last month of the initial Term for the Premises until such time as the Prevailing Market rate has been determined. Upon such determination, the Base Rent for the Premises shall be retroactively adjusted to the commencement of the Renewal Term for the Premises. If such adjustment results in an underpayment of Base Rent by Tenant, Tenant shall pay Landlord the amount of such underpayment within 30 days after the determination thereof. If such adjustment results in an overpayment of Base Rent by Tenant, Landlord shall credit such overpayment against the next installment of Base Rent due under the Lease and, to the extent necessary, any subsequent installments, until the entire amount of such overpayment has been credited against Base Rent.

2.05. Renewal Amendment. If Tenant is entitled to and properly exercises its Renewal Option, and if Tenant provides Landlord with a Binding Notice (as described in Section 2.03 above) or Landlord and Tenant otherwise agree upon the Prevailing Market rate for the Premises applicable during the Renewal Term, Landlord shall prepare an amendment (the “Renewal Amendment”) to reflect changes in the Base Rent, Term, Expiration Date and other appropriate terms. The Renewal Amendment shall be sent to Tenant within a reasonable time after Landlord’s receipt of the Binding Notice or other written agreement by Landlord and Tenant regarding the Prevailing Market rate, and Tenant shall execute and return the Renewal Amendment to Landlord within 15 days after Tenant’s receipt of same, but, upon final determination of the Prevailing Market rate applicable during the Renewal Term as described herein, an otherwise valid exercise of the Renewal Option shall be fully effective whether or not the Renewal Amendment is executed.

2.06. Definition of Prevailing Market. For purposes of this Renewal Option, “Prevailing Market” shall mean the arms length fair market annual rental rate per rentable square foot under renewal leases and amendments entered into on or about the date on which the Prevailing Market is being determined hereunder for space comparable to the Premises in the Building. The determination of Prevailing Market shall take into account any material economic differences between the terms of this Lease and any comparison lease or amendment, such as rent abatements, construction costs and other concessions, and the manner, if any, in which the landlord under any such lease is reimbursed for operating expenses and taxes. The determination of Prevailing Market shall also take into consideration any reasonably anticipated changes in the Prevailing Market rate from the time such Prevailing Market rate is being determined and the time such Prevailing Market rate will become effective under this Lease.

3. LETTER OF CREDIT.

3.01. General Provisions. Concurrently with Tenant’s execution of this Lease, Tenant shall deliver to Landlord, as collateral for the full performance by Tenant of all of its obligations under this Lease and for all losses and damages Landlord may suffer as a result of Tenant’s failure to comply with one or more provisions of this Lease, including, but not limited to, any post lease termination damages under section 1951.2 of the California Civil Code, a standby, unconditional, irrevocable, transferable letter of credit (the “Letter of Credit”) in the form of Exhibit H hereto and containing the terms required herein, in the face amount of $170,000.00 (the “Letter of Credit Amount”), naming Landlord as beneficiary, issued (or confirmed) by a financial institution acceptable to Landlord in Landlord’s sole discretion, permitting multiple and partial draws thereon, and otherwise in form acceptable to Landlord in its sole discretion. Tenant shall cause the Letter of Credit to be continuously maintained in effect (whether through replacement, renewal or extension) in the Letter of Credit Amount through the date (the “Final LC Expiration Date”) that is 60 days after the scheduled expiration date of the Term or any renewal Term. If the Letter of Credit held by Landlord expires earlier than the Final LC Expiration Date (whether by reason of a stated expiration date or a notice of termination or non-renewal given by the issuing bank), Tenant shall deliver a new Letter of Credit or certificate of renewal or extension (a “Renewal or Replacement LC”) to Landlord not later than 30 days prior to the expiration date of the Letter of Credit then held by Landlord. Any Renewal or Replacement LC shall comply with all of the provisions of this Section 3.01, shall be irrevocable, transferable and shall remain in effect (or be automatically renewable) through the Final LC Expiration Date upon the same terms as the expiring Letter of Credit or such other terms as may be acceptable to Landlord in its reasonable discretion.

3.02. Drawings under Letter of Credit. Upon Tenant’s failure to comply with one or more provisions of this Lease, or as otherwise specifically agreed by Landlord and Tenant pursuant to this Lease or any amendment hereof, Landlord may, without prejudice to any other remedy provided in this Lease or by Law, draw on the Letter of Credit and use all or part of the proceeds to (a) satisfy any amounts due to Landlord from Tenant, and (b) satisfy any other damage, injury, expense or liability caused by Tenant’s failure to so comply. In addition, if Tenant fails to furnish a Renewal or Replacement LC complying with all of the provisions of this Section 3.01 at least 30 days prior to the stated expiration date of the Letter of Credit then held by Landlord, Landlord may draw upon such Letter of Credit and hold the proceeds thereof (and such proceeds need not be segregated) in accordance with the terms of this Section 3.03 (the “LC Proceeds Account”).

3.03. Use of Proceeds by Landlord. The proceeds of the Letter of Credit shall constitute Landlord’s sole and separate property (and not Tenant’s property or the property of Tenant’s bankruptcy estate) and Landlord may immediately upon any draw (and without notice to Tenant) apply or offset the proceeds of the Letter of Credit: (a) against any Rent payable by Tenant under this Lease that is not paid when due; (b) against all losses and damages that Landlord has suffered or that Landlord reasonably estimates that it may suffer as a result of Tenant’s failure to comply with one or more provisions of this Lease, including any damages arising under section 1951.2 of the California Civil Code following termination of the Lease; (c) against any costs incurred by Landlord in connection with the Lease (including attorneys’ fees); and (d) against any other amount that Landlord may spend or become obligated to spend by reason of Tenant’s Default. Provided Tenant has performed all of its obligations under this Lease, Landlord agrees to pay to Tenant within 45 days after the Final LC Expiration Date the amount of any proceeds of the Letter of Credit received by Landlord and not applied as allowed above; provided, that if prior to the Final LC Expiration Date a voluntary petition is filed by Tenant or any Guarantor, or an involuntary petition is filed against Tenant or any Guarantor by any of Tenant’s or Guarantor’s creditors, under the Federal Bankruptcy Code, then Landlord shall not be obligated to make such payment in the amount of the unused Letter of Credit proceeds until either all preference issues relating to payments under this Lease have been resolved in such bankruptcy or reorganization case or such bankruptcy or reorganization case has been dismissed, in each case pursuant to a final court order not subject to appeal or any stay pending appeal.

3.04. Additional Covenants of Tenant. If, as result of any application or use by Landlord of all or any part of the Letter of Credit, the amount of the Letter of Credit shall be less than the Letter of Credit Amount, Tenant shall, within 10 business days thereafter, provide Landlord with additional letter(s) of credit in an amount equal to the deficiency (or a replacement letter of credit in the total Letter of Credit Amount), and any such additional (or replacement) letter of credit shall comply with all of the provisions of this Section 3.04, and if Tenant fails to comply with the foregoing, notwithstanding anything to the contrary contained in this Lease, the same shall constitute an incurable Default by Tenant. Tenant further covenants and warrants that it will neither assign nor encumber the Letter of Credit or any part thereof and that neither Landlord nor its successors or assigns will be bound by any such assignment, encumbrance, attempted assignment or attempted encumbrance.

3.05. Nature of Letter of Credit. Landlord and Tenant (a) acknowledge and agree that in no event or circumstance shall the Letter of Credit or any renewal thereof or substitute therefor or any proceeds thereof (including the LC Proceeds Account) be deemed to be or treated as a “security deposit” under any Law applicable to security deposits in the commercial context including Section 1950.7 of the California Civil Code, as such section now exist or as may be hereafter amended or succeeded (“Security Deposit Laws”), (b) acknowledge and agree that the Letter of Credit (including any renewal thereof or substitute therefor or any proceeds thereof) is not intended to serve as a security deposit, and the Security Deposit Laws shall have no applicability or relevancy thereto, and (c) waive any and all rights, duties and obligations either party may now or, in the future, will have relating to or arising from the Security Deposit Laws. Tenant hereby waives the provisions of Section 1950.7 of the California Civil Code and all other provisions of Law, now or hereafter in effect, which (i) establish the time frame by which Landlord must refund a security deposit under a lease, and/or (ii) provide that Landlord may claim from the 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 specified above in this Section 3.05 and/or those sums reasonably necessary to compensate Landlord for any loss or damage caused by Tenant’s breach of this Lease or the acts or omission of Tenant or

any other Tenant Related Parties, including any damages Landlord suffers following termination of the Lease.

3.06 Reduction in Letter of Credit Amount. Provided that, during the 12 month period immediately preceding the effective date of any reduction of the Letter of Credit, Tenant has timely paid all Rent and no monetary Default has occurred under this Lease (the “LC Reduction Conditions”), Tenant may reduce the Letter of Credit Amount so that the reduced Letter of Credit Amounts will be as follows: (a) $113,000 effective as of the 13^th full calendar month of the Lease Term; (b) $56,000.00 effective as of the 25th full calendar month of the Lease Term; (c) $0 effective as of the 37^th full calendar month of the Lease Term. If Tenant is not entitled to reduce the Letter of Credit Amount as of a particular reduction effective date due to Tenant’s failure to satisfy the LC Reduction Conditions described above, then any subsequent reduction(s) Tenant is entitled to hereunder shall be reduced by the amount of the reduction Tenant would have been entitled to had Tenant satisfied the LC Reduction Conditions necessary for such earlier reduction. Notwithstanding anything to the contrary contained herein, if Tenant has been in monetary Default under this Lease at any time prior to the effective date of any reduction of the Letter of Credit Amount and Tenant has failed to cure such monetary Default within any applicable cure period, then Tenant shall have no further right to reduce the Letter of Credit Amount as described herein. Any reduction in the Letter of Credit Amount shall be accomplished by Tenant providing Landlord with a substitute letter of credit in the reduced amount or an amendment to the existing Letter of Credit reflecting the reduced amount.

4 RIGHT OF FIRST OFFER.

4.01. Grant of Option; Conditions. Following initial leasing of such space by Landlord, Tenant shall have the one time right of first offer (the “Right of First Offer”) on any space immediately adjacent to the Premises on the 2^nd floor (any such space being referred to as “Offering Space”). Tenant’s Right of First Offer shall be exercised as follows: at any time after Landlord has determined that the then existing tenant in the Offering Space will not extend or renew the term of its lease for the Offering Space (but prior to leasing such Offering Space to a party other than the existing tenant or a party with superior rights), Landlord shall advise Tenant (the “Advice”) of the terms under which Landlord is prepared to lease the Offering Space to Tenant for the remainder of the Term, which terms shall reflect the greater of the Prevailing Market (hereinafter defined) rate for such Offering Space as reasonably determined by Landlord or the Base Rent per rentable square foot and Tax and Expense Base Year for the Premises. Tenant may lease such Offering Space in its entirety only, under such terms, by delivering written notice of exercise to Landlord (the “Notice of Exercise”) within 3 business days after the date of the Advice, except that Tenant shall have no such Right of First Offer and Landlord need not provide Tenant with an Advice, if:

a. Tenant is in default under the Lease beyond any applicable cure periods at the time that Landlord would otherwise deliver the Advice; or

b. the Premises, or any portion thereof, is sublet (other than pursuant to a Permitted Transfer, as defined in Section 14.8 of the Lease) at the time Landlord would otherwise deliver the Advice; or

c. the Lease has been assigned (other than pursuant to a Permitted Transfer, as defined in Section 14.8 of the Lease) prior to the date Landlord would otherwise deliver the Advice; or

d. Tenant (or other entity in connection with a Permitted Transfer) is not occupying the entire Premises on the date Landlord would otherwise deliver the Advice; or

e. the Offering Space is not intended for the exclusive use of Tenant during the Term; or

f. the existing tenant in the Offering Space is interested in extending or renewing its lease for the Offering Space or entering into a new lease for such Offering Space or a tenant with superior rights is interested in leasing the Offering Space.

4.02. Terms for Offering Space.

a. The term for the Offering Space shall commence upon the commencement date stated in the Advice and thereupon such Offering Space shall be considered a part of the Premises, provided that all of the terms stated in the Advice shall govern Tenant’s leasing of the Offering Space and only to the extent that they do not conflict with the Advice, the terms and conditions of this Lease shall apply to the Offering Space.

b. Tenant shall pay Base Rent and Additional Rent for the Offering Space in accordance with the terms and conditions of the Advice, which terms and conditions shall reflect the greater of the Prevailing Market rate for the Offering Space as determined in Landlord’s reasonable judgment or the Base Rent per rentable square foot and Tax and Expense Base Year for the Premises.

c. The Offering Space (including improvements and personalty, if any) shall be accepted by Tenant in its condition and as-built configuration existing on the earlier of the date Tenant takes possession of the Offering Space or as of the date the term for such Offering Space commences, unless the Advice specifies any work to be performed by Landlord in the Offering Space, in which case Landlord shall perform such work in the Offering Space. If Landlord is delayed delivering possession of the Offering Space due to the holdover or unlawful possession of such space by any party, Landlord shall use reasonable efforts to obtain possession of the space, and the commencement of the term for the Offering Space shall be postponed until the date Landlord delivers possession of the Offering Space to Tenant free from occupancy by any party.

4.03. Termination of Right of First Offer. The rights of Tenant hereunder with respect to the Offering Space shall terminate on the earlier to occur of: (i) November 30, 2010 with respect to all Offering Space; (ii) as to any particular Offering Space, Tenant’s failure to exercise its Right of First Offer within the 3 business day period provided in Section 4.01 above (provided, however, that if Landlord intends to enter into a lease upon economic terms which are materially more favorable to a third (3rd) party tenant than those economic terms proposed by Landlord in the Advice, Landlord shall first deliver written notice to Tenant (“Second Chance Notice”) providing Tenant with the opportunity to lease the space described in the Advice on such more favorable economic terms; and Tenant’s failure to elect to lease the space described in the Advice upon such materially more favorable economic terms by written notice to Landlord within three (3) business days after Tenant’s receipt of such Second Chance Notice from Landlord shall be deemed to constitute Tenant’s election not to lease such space upon such materially more favorable economic terms, in which case Landlord shall be entitled to lease such space to any third (3rd) party on terms no more favorable to the third (3rd) party than those set forth in the Second Chance Notice); and (iii) as to all Offering Space, the date Landlord would have provided Tenant an Advice if Tenant had not been in violation of one or more of the conditions set forth in Section 4.01 above. In addition, if Landlord provides Tenant with an Advice for any portion of the Offering Space that contains expansion rights (whether such rights are described as an expansion option, right of first refusal, right of first offer or otherwise) with respect to any other portion of the Offering Space (such other portion of the Offering Space subject to such expansion rights is referred to herein as the “Encumbered Offering Space”) and Tenant does not exercise its Right of First Offer to lease the Offering Space described in the Advice, Tenant’s Right of First Offer with respect to the Encumbered Offering Space shall be subject and subordinate to all such expansion rights contained in the Advice. For purposes hereof, the terms offered to a prospective third party tenant shall be deemed to be substantially the same as those set forth in the Advice (i.e and not materially more favorable) as long as there is no more than a 10% reduction in the “bottom line” cost per rentable square foot of the Offering Space to the prospective third party tenant when compared with the “bottom line” cost per rentable square foot under the Advice, considering all of the economic terms of both deals, respectively, including, without limitation, the length of term, the net rent, any tax or expense escalation or other financial escalation and any financial concessions.

4.04. Offering Amendment. If Tenant exercises its Right of First Offer, Landlord shall prepare an amendment (the “Offering Amendment”) adding the Offering Space to the Premises on the terms set forth in the Advice and reflecting the changes in the Base Rent, Rentable Square Footage of the Premises, Tenant’s Share and other appropriate terms. A copy of the Offering Amendment shall be sent to Tenant within a reasonable time after Landlord’s receipt of the Notice of Exercise executed by Tenant, and, if reasonably

acceptable to Tenant, Tenant shall execute and return the Offering Amendment to Landlord within 15 days thereafter, but an otherwise valid exercise of the Right of First Offer shall be fully effective whether or not the Offering Amendment is executed.

4.05. Definition of Prevailing Market. For purposes of this Renewal Option, “Prevailing Market” shall mean the arms length fair market annual rental rate per rentable square foot under new and expansion leases and amendments entered into on or about the date on which the Prevailing Market is being determined hereunder for space comparable to the Premises in the Building. The determination of Prevailing Market shall take into account any material economic differences between the terms of this Lease and any comparison lease or amendment, such as rent abatements, construction costs and other concessions, and the manner, if any, in which the landlord under any such lease is reimbursed for operating expenses and taxes. The determination of Prevailing Market shall also take into consideration any reasonably anticipated changes in the Prevailing Market rate from the time such Prevailing Market rate is being determined and the time such Prevailing Market rate will become effective under this Lease.

4.06. Subordination. Notwithstanding anything herein to the contrary, Tenant’s Right of First Offer is subject and subordinate to any superior rights (whether such rights are designated as a right of first offer, right of first refusal, expansion option or otherwise) of any tenant of the Building existing on the date hereof.

5. COMMON CONFERENCE FACILITY/TRAINING ROOM. Landlord is in the process of constructing a shared conference room and a shared training room on the second (2^nd) floor of the Building (the “Conference Facility”). Subject to availability, Subtenant shall have the right to utilize one or both of these rooms on a first come first served basis at Landlord’s then prevailing rate, which is currently $75.00 per half day and $150.00 per day. In order to schedule such usage, Tenant shall contact Landlord’s building management office at least 24 hours prior to the date on which Tenant desires to utilize such conference room. In addition to paying the usage fee, Tenant, within thirty (30) days after receipt of an invoice from Landlord, shall reimburse Landlord for any costs incurred by Landlord to clean or repair any such Conference Facility in connection with the usage thereof by Tenant.

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