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1111 Lockheed Martin Way (Sunnyvale, CA) Triple Net Multiple Building Lease - Moffett Park Drive LLC and Ariba Inc.

                               TECHNOLOGY CORNERS

                       TRIPLE NET MULTIPLE BUILDING LEASE

                                     Between

                             MOFFETT PARK DRIVE LLC
                     a California limited liability company
                                       as
                                     LESSOR

                                       and

                                   ARIBA, INC.
                             a Delaware corporation
                                       as
                                     LESSEE

                                       for

                                    PREMISES
                                       at
                            1111 Lockheed Martin Way
                           Sunnyvale, California 94089



                                    ARTICLE I
                                     PARTIES

      Section 1.01. Parties. This Lease, dated for reference purposes, and
effective as of March 15, 2000, is made by and between MOFFETT PARK DRIVE LLC, a
California limited liability company, or assignee, ("Lessor") and ARIBA, INC., a
Delaware corporation ("Lessee").

                                   ARTICLE II
                                    PREMISES

      Section 2.01. Demise of Premises. Lessor hereby leases to Lessee and
Lessee leases from Lessor for the term, at the rental, and upon all of the terms
and conditions set forth herein, Premises consisting of four free standing, four
story office and research and development buildings (shown as Buildings "One,
"Two," "Three," and "Four" on Exhibit "A" hereto) and one ancillary building to
be used for such service and/or food purposes such as fitness spa, a day care,
dry cleaners and cafeteria for the benefit of Lessee's employees as determined
by Lessee but subject to Lessor's consent which shall not be unreasonably
withheld and subject to Lessor determining that it can obtain all City permit
and approval requirements pertaining to same ("Amenity Building") (collectively
"Buildings") to be constructed by Lessor on real property situated in the City
of Sunnyvale, County of Santa Clara, State of California and commonly known as
1111 Lockheed Martin Way, Sunnyvale, California (the "Property"). Each office
and research and development Building will consist of approximately one hundred
seventy five thousand (175,000) rentable square feet and the Amenity Building of
approximately fifteen thousand (15,000) rentable square feet, as more
particularly described and depicted herein in Exhibit "A" for a total of seven
hundred fifteen thousand (715,000) rentable square feet. The actual rentable
square footage of the Buildings (the "Rentable Area") will be determined and
certified by Lessor's architect by a method described as "dripline," whereby the
measurement encompasses the outermost perimeter of each constructed building,
including every projection thereof and all area beneath each such projection,
whether or not enclosed, with no deduction for any inward deviation of structure
and with the measurement being made floor by floor, beginning from the top of
the Building. The Buildings, including the Amenity Building, and appurtenances
described herein, the Property, and all other improvements to be built on the
Property including a parking structure are together designated as the "Project."
Each Building for which the Delivery Date as provided in Section 3.01(b) (or
any earlier deemed Delivery Date as provided in Section 4.01) has occurred, and
those portions of the Project (other than the Buildings) as to which possession
has been tendered to Lessee following substantial completion of all improvements
to be constructed thereon by Lessor, shall collectively be referred to herein as
the "Premises."

      Section 2.02. Outside Area. During the Lease Term, Lessee shall have the
right to use the Outside Area defined herein surrounding the Buildings. Lessor
reserves the right to modify the Outside Area, including reducing the size or
changing the configuration and elements thereof in its sole discretion and to
close or restrict access from time-to-time for repair, maintenance or to prevent
a dedication thereof, provided that Lessee nonetheless shall have access to
parking and the Premises (including all Buildings) at all times. Lessor further
reserves the right to



                                       1


establish, repeal and amend from time-to-time rules and regulations for the use
of the Outside Area and to grant reciprocal easements or other rights to use the
Outside Area to owners of other property, which shall not unreasonably interfere
with use or enjoyment of the Premises.

      Section 2.03. Parking. Lessor shall provide Lessee with parking as
required by the City of Sunnyvale at the Premises. In the event Lessor elects or
is required by any law to limit or control parking at the Premises, whether by
validation of parking tickets or any other method of assessment, Lessee agrees
to participate in such validation or assessment program under such reasonable
rules and regulations as are from time-to-time established by Lessor.

      Section 2.04. Construction.

      (a) Government Approvals. Lessor shall diligently pursue obtaining
governmental approval of a Site Plan and Buildings designs and elevations with
respect to the development of the Premises, copies of which are attached hereto
as Exhibit "A." The parties acknowledge and agree that the final footprint and
elevations of the Buildings may vary from those attached as Exhibit "A" because
the plans and specifications will undergo a plancheck process with the City of
Sunnyvale and Lessor will make such revisions as are required or are otherwise
deemed necessary or appropriate by Lessor, provided however, that nothing herein
shall be deemed to relieve Lessor from the duty to develop the Buildings
substantially in compliance with Exhibit "A".

      (b) Construction of Building Shells. Lessor, utilizing Rudolph & Sletten
(or such alternate as Lessor in its sole discretion may select) as general
contractor ("General Contractor"), shall construct the "Building Shell" (as
defined in the attached Exhibit "D") for each Building in accordance with (i)
plans and specifications to be attached as Exhibit "B" and (ii) all existing
applicable municipal, local, state and federal laws, statutes, rules,
regulations and ordinances: Lessor shall pay all costs of constructing the
Building Shells. Lessor and Lessee acknowledge and agree that the definition of
"Building Shell" includes all required landscaping and site improvements for the
Project as set forth in plans approved by the Lessor and the City of Sunnyvale.

      (c) Construction of Tenant Improvements. All improvements not included
within the scope of the Building Shells shall be deemed "Tenant Improvements."
Lessor, using the General Contractor, shall construct the Tenant Improvements
and Lessee shall pay all costs associated with same.

      (d) Tenant Improvement Plans and Cost Estimate. Lessee shall work with
Lessee's architect to develop interior schematic drawings and Lessee shall
approve final interior schematic drawings for the Tenant Improvements for all
Buildings and obtain Lessor's approval thereof (which approval shall not be
unreasonably withheld or delayed) no later than May 15, 2000. Lessee shall work
with Lessor's architect to develop working drawings outlining, among other
things, Lessee's wall layout, detailed electrical, plumbing and air conditioning
requirements and finishes ("Working Drawings") and Lessee shall approve final
Working Drawings for the Buildings on or before July 1, 2000 for Building Three
and the Amenity Building, July 21, 2000 for Building Four, August 5, 2000 for
Building Two and September 8, 2000 for Building One. The cost of the interior
schematic drawings and Working Drawings shall


                                       2


be a Tenant Improvement cost and Lessor agrees that Lessor's architect's fees
shall not vary materially from the range of fees charged for similar work for
similar tenant improvements under similar time constraints by architects of
similar ability, experience and expertise in the Silicon Valley community. Based
on this information, Lessor shall cause the General Contractor to prepare and
deliver to Lessee a budget for the Tenant Improvements ("Budget"). Lessee shall
approve the Budget (or modify the same with Lessor's consent), in writing,
within ten (10) business days thereafter. The Working Drawings and Budget must
be approved by Lessor in writing and be of quality equal to or greater than the
Interior Specifications standards set forth in Exhibit "C." Once the Budget is
approved, Lessor shall enter into a guaranteed maximum price contract with the
General Contractor for the construction of the Tenant Improvements consistent
with the approved Budget. A Lessee representative may attend construction
meetings between Lessor and its General Contractor concerning Tenant
Improvements, but nothing herein shall either (i) create or imply a duty on the
part of Lessor to notify Lessee of such meetings, or (ii) invalidate or
otherwise affect in any manner anything which takes place at or as a result of
any such meeting which Lessee's representative fails to attend, whether or not
it had notice of same.

      (e) Construction Plans. The complete, detailed plans and specifications
for the construction of the Shell Buildings shall be attached as Exhibit "B" and
incorporated into this Lease. Attached as Exhibit "C" to this Lease is a Work
Letter Agreement for Tenant Improvements, and Exhibit "D," Cost Responsibilities
of Lessor and Lessee, which together with this Section 2.04, describe the
planning and payment responsibilities of Lessor and Lessee with respect to the
construction of the Building Shells and Tenant Improvements at the Premises. All
approved Tenant Improvements shall be constructed in accordance with a
construction schedule approved by Lessor and no portion of any Building shall
remain unimproved.

      (f) Tenant Improvement Costs. Lessor shall provide to Lessee semi-improved
"cold" shell facilities as described in Exhibit "D" attached. Lessor shall cause
the General Contractor to construct the Tenant Improvements outlined in Exhibit
"D," as further outlined in the Tenant Improvement Work Letter attached as
Exhibit "C" and Lessee shall pay all costs and expenses of same. Subcontracts
for all Tenant Improvement Work shall be obtained by a sealed competitive bid
process (involving at least two qualified bidders) wherever practical and as to
work done without such process, Lessor or the General Contractor shall provide
reasonable assurance to Lessee that the cost and expense of same is competitive
in the industry for first-class workmanship and materials. Lessor shall use good
faith efforts (and instruct the General Contractor to do same) to keep Lessee
generally informed as to all aspects of the pricing, bidding, contracting and
construction processes with respect to the Tenant Improvements.

      (g) Payment for Tenant Improvements. Within six (6) months after execution
of this Lease by both parties, Lessee shall deposit with Lessor an
unconditional, irrevocable standby letter of credit in the amount of Fourteen
Million, Three Hundred Thousand Dollars ($14,300,000), with Lessor as
beneficiary and providing for payment on presentation of Lessor's draft(s) on
sight, without documents, drawable in whole or in part on a money center bank in
San Francisco acceptable to Lessor with a twelve (12) month term and in all
other ways in form acceptable to Lessor, with, in all cases, Lessor's approval
being in its sole discretion. Within ten (10) business days after the Budget is
approved by Lessor and Lessee, Lessee shall deposit cash in an amount equal to
twenty-five (25%) percent of the amount budgeted for Tenant Improvements
(together with the cost of any Tenant Improvements already made) with Lessor's


                                       3


construction lender to be held in an interest bearing escrow account. Said
construction lender shall issue payments from said account pursuant to the
construction contract for the Tenant Improvements until the account is
exhausted, whereupon any remaining payments shall be made 100% directly by
Lessee. Lessor shall manage the construction of the Tenant Improvements for a
supervision fee of 3% of the Budget (as the same may change by agreement of the
parties) due and payable in nine equal monthly installments beginning on the
first day of the calendar month following the calendar month in which the Budget
is first approved. Lessor may draw down on the letters of credit in whole or in
part and in such amounts as it deems appropriate in its sole discretion if
Lessee fails to comply with any of its obligations under this Lease including,
without limitation, full and timely payments of amounts due under the
construction contract for Tenant Improvements. Lessor shall return the aforesaid
letter of credit upon the lien free completion of Tenant Improvements, payment
of all amounts due to the General Contractor for the Tenant Improvements,
acceptance of same by Lessee and commencement of payment of rent as to all
Buildings, provided that if those events have not occurred prior to expiration
of the letter of credit, Lessor shall be entitled to draw on said letter of
credit in an amount equal to any amount then outstanding with respect to the
construction or installation of Tenant Improvements or for any other amount then
due or unpaid under this Lease.

      (h) Lessee's Fixturing Period. Lessor shall provide Lessee access to each
Building during the thirty (30) day period prior to the Delivery Date for such
Building ("Lessee's Fixturing Period") for the purpose of installing furnishings
and equipment, e.g. security system, furniture system and phone and data system,
provided, that Lessee and Lessee's employees and contractors shall at all times
avoid interfering with Lessor's ongoing work to bring the Premises to a
substantially completed condition. Except for payment of Base Rent, all terms
and provisions of this Lease shall apply during Lessee's Fixturing Period,
including, without limitation, Lessee's indemnity and other obligations set
forth in Sections 7.07., 7.08. and 17.22. hereof and payment of Additional Rent
pursuant to Section 4.05 hereof.

                                   ARTICLE III
                                      TERM

      Section 3.01. Lease Term.

      (a) Commencement Date. The term of this Lease ("Lease Term") shall be for
at least twelve (12) years beginning on the earlier of (i) the date Lessee first
occupies any part of any Building (other than by the fixturing activities
authorized under Section 2.04.(h) or conducts business at the Premises or (ii)
the date a Certificate of Occupancy first is issued affecting any Building (the
"Commencement Date") provided that, (i) for each day of delay by Lessee in
failing to approve the interior schematic drawings or the Working Drawings when
required under Section 2.04(d), (ii) for each day of delay by Lessee in failing
to approve the Budget, in writing, within seven (7) days after delivery by the
General Contractor as provided in Section 2.04(d), or (iii)) for each day of
delay caused by any changes to the approved Working Drawings requested by Lessee
or (iv)) for each day that any other act or omission by Lessee causes the
construction schedule for Tenant Improvements to be delayed (collectively
"Lessee Delay"), the Commencement Date shall occur one (1) day in advance of the
date of issuance of the first Certificate of Occupancy for each day of delay
provided that Lessor shall give Lessee written notice of any such Lessee Delay
described in clause (iii), or (iv) within seven (7)


                                       4


business days after commencement of the alleged delay. For example, if seven (7)
days of Lessee Delay causes the date of issuance of the Certificate of Occupancy
to occur on January 8, 2001 rather than January 1, 2001, the Commencement Date
shall be January 1, 2001 for all purposes, including payment of Base Rent and
Additional Rent. The Lease Term shall expire, unless sooner terminated or
extended as provided herein, on the date which completes twelve (12) years after
the Commencement Date ("Expiration Date"). The parties shall execute a
"Memorandum of Commencement of Lease Term" when the Commencement Date becomes
known, which shall include a certification of the actual Rentable Area of the
Buildings determined by the methodology described in Section 2.01. and the
actual monthly installments of Base Rent to be paid pursuant to Section 4.01.,
and shall be substantially in the form attached hereto as Exhibit "E."
Certificate of Occupancy means a document so titled or its equivalent,
signifying that the Building in question can be legally occupied.

      (b) Scheduled Delivery Dates. Lessor shall use commercially reasonable
efforts to cause Certificates of Occupancy to be issued for Building Three no
later than January 25, 2001, ("First Scheduled Delivery Date"); then February
15, 2001 for Building Four; March 8, 2001 for Building Two; and March 29, 2001
for Building One and March 29, 2001 for the Amenity Building. If a Certificate
of Occupancy is not issued for any one or more Buildings on or before its
Scheduled Delivery Date, this failure shall not affect the validity of this
Lease or the obligations of Lessee under it. If the Commencement Date is
adjusted for delay from any cause, the Expiration Date shall be likewise
adjusted for a like period. It is understood and agreed that the Amenity
Building may be delayed by the particular permitting, planning and finishing
needs of the use(s) desired by Lessee. The actual delivery date for each
Building shall be the date on which Lessor tenders possession of the Building to
Lessee after a Certificate of Occupancy is issued for such Building ("Delivery
Date").

      (c) Termination in Event of Delay. If for any reason Lessor is unable to
cause the issuance of a Certificate of Occupancy for any Building, on or before
the date which is one hundred eighty (180) days after the Scheduled Delivery
Date for such Building (for a reason other than Lessee Delay or delay excused
under Section 17.21.), Lessee, at its sole election, may terminate this Lease
upon giving notice within ten (10) days thereafter. Failure to give such notice
within said time period constitutes an irrevocable waiver of the foregoing right
to terminate under this Section 3.01 (c).

      (d) Occupancy. Lessee shall commence occupancy of each Building no later
than thirty (30) days after its Delivery Date.

      Section 3.02. Option to Extend.

      (a) Exercise. Lessee is given one (1) option to extend the Lease Term
("Option to Extend") for a five (5) year period ("Extended Term") following the
date on which the initial Lease Term would otherwise expire, which option may be
exercised only by written notice ("Option Notice") from Lessee to Lessor given
not less than twelve (12) months prior to the Expiration Date of the initial
Lease Term ("Option Exercise Date"); provided, however, if Lessee is in material
default under this Lease (after written notice and beyond the expiration of any
applicable notice period) on the Option Exercise Date or on any day thereafter
on or before the last day of the initial Lease Term, the Option Notice shall be
totally ineffective) and this


                                       5


Lease shall expire on the last day of the initial Lease Term, if not sooner
terminated in accordance with the terms of this Lease.

      (b) Extended Term Rent. In the event Lessee exercises its Option to Extend
set forth herein, all the terms and conditions of this Lease shall continue to
apply except that the Base Rent payable by Lessee during the Option Term shall
be equal to one hundred percent (100%) of Fair Market Rent (defined below), as
determined under subparagraph (c) below. A "Fair Market Rent" shall mean the
effective rate being charged (including periodic adjustments thereto as
applicable during the period of the Extended Term), for comparable space in
similar buildings in the vicinity, i.e. of a similar age and quality considering
any recent renovations or modernization, and floor plate size or, if such
comparable space is not available, adjustments shall be made in the
determination of Fair Market Rent to reflect the age and quality of the
Buildings and Premises as contrasted to other buildings used for comparison
purposes, with similar amenities, taking into consideration: size, location,
floor level, leasehold improvements or allowances provided or to be provided,
term of the lease, extent of services to be provided, the time that the
particular rate under consideration became or is to become effective, and any
other relevant terms or conditions applicable to both new and renewing tenants,
but in no event less than the monthly Base Rent prevailing during the last year
of the initial Lease Term and without any downward adjustment in rent for the
Amenity Building which shall be deemed to be of identical Fair Market Rent value
as the four office and research and development Buildings.

      (c)   Determination of Fair Market Rent.

            (i) Negotiation. If Lessee so exercises the Option to Extend in a
timely manner, the parties shall then meet in good faith to negotiate the Base
Rent for the Premises for the Extended Term, during the first thirty (30) days
after the date of the delivery by Lessee of the Option Notice (the "Negotiation
Period"). If, during the Negotiation Period, the parties agree on the Base Rent
applicable to the Premises for the Extended Term, then such agreed amount shall
be the Base Rent payable by Lessee during the Extended Term.

            (ii) Arbitration. In the event that the parties are unable to agree
on the Base Rent for the Premises within the Negotiation Period, then within ten
(10) days after the expiration of the Negotiation Period, each party shall
separately designate to the other in writing an appraiser to make this
determination. Each appraiser designated shall be a member of MAI and shall have
at least ten (10) years experience in appraising commercial real property in
Santa Clara County. The failure of either party to appoint an appraiser within
the time allowed shall be deemed equivalent to appointing the appraiser
appointed by the other party, who shall then determine the Fair Market Rent for
the Premises for the Extended Term. Within five (5) business days of their
appointment, the two designated appraisers shall jointly designate a third
similarly qualified appraiser. Within thirty (30) days after their appointment,
each of the two appointed appraisers shall submit to the third appraiser a
sealed envelope containing such appointed appraiser's good faith determination
of the Fair Market Rent for the Premises for the Extended Term; concurrently
with such delivery, each such appraiser shall deliver a copy of his or her
determination to the other appraiser. The third appraiser shall within ten (10)
days following receipt of such submissions, then determine which of the two
appraisers' determinations most closely reflects Fair Market Rent as defined
above. The determination most closely reflecting the third appraiser's
determination shall be the Base Rent for the Premises


                                       6


during the Extended Term; the third appraiser shall have no rights to adjust,
amend or otherwise alter the determinations made by the appraiser selected by
the parties, but must select one or the other of such appraisers' submissions.
The determination by such third appraiser shall be final and binding upon the
parties. Said third appraiser shall, upon selecting the determination which most
closely resembles Fair Market Rent, concurrently notify both parties hereto. The
parties shall share the appraisal expenses equally. If the Extended Term begins
prior to the determination of Fair Market Rent, Lessee shall pay monthly
installments of Base Rent equal to one hundred ten percent (110%) of the monthly
installment of Base Rent in effect for the last year of the initial Lease Term
(in lieu of "holdover rent" payable under Section 17.09(b)). Once a
determination is made, any over payment or under payment shall be reimbursed as
a credit against, or paid by adding to, the monthly installment of Base Rent
next falling due.

      Section 3.03. Financing Contingency. Notwithstanding any other provision
hereof it is understood and agreed that this Lease may be terminated by Lessor
on five (5) days advance written notice to Lessee if Lessor determines that it
is unable to obtain financing of the Project on terms and conditions
satisfactory to Lessor in its sole discretion, provided, that if Lessor has not
exercised its right to terminate under this Section 3.03 on or before March 31,
2000, it shall be deemed to have waived such right and this provision shall
automatically expire and become null and void.

                                   ARTICLE IV
                             RENT: TRIPLE NET LEASE

      Section 4.01. Base Rent. Subject to adjustment of Rentable Area pursuant
to Section 2.01(a) and concomitant adjustment to Base Rent, Lessee shall pay to
Lessor as Base Rent an initial monthly installment of Three Dollars ($3.00) per
square foot of Rentable Area of the Premises as determined under Section 2.01.,
in advance, on the first day of each calendar month of the Lease Term,
commencing on the Commencement Date. Base Rent for any period during the Lease
Term which is for less than one month shall be a pro rata portion of the monthly
installment (based on the actual days in that month). It is expected that Base
Rent will be calculated initially on the first Building on its Delivery Date and
that it will be increased by the Rentable Area of each other Building as of the
Delivery Date for such Building (or as to each Building, such earlier deemed
Delivery Date as may result from Lessee Delay with respect to such Building,
calculated in the same manner as the advancement of the Commencement Date is
calculated, i.e. advanced by one day for each day of delay in completion of the
subject Building caused by Lessee Delay).

      Section 4.02. Rent Adjustment. The Base Rent set forth in Section 4.01.
above shall be adjusted upward by an annual compounded increase of four percent
(4%), as of the first day of the thirteenth (13th) full calendar month following
the Commencement Date and as of the first day of every thirteenth (13th)
calendar month thereafter during the Lease Term, as shown on Exhibit "E"
attached hereto.

      Section 4.03. Advance Rental. Lessee shall pay to Lessor upon execution
hereof an advance payment equal to one month of estimated Base Rent for all
Buildings in the sum of Two Million One Hundred Forty-Five Thousand Dollars and
no Cents ($2,145,000.00), subject to


                                       7


being adjusted upon final measurement of each of the Buildings on or before the
Delivery Date for such Building, said payment to be applied to the first monthly
installments of Base Rent (and Base Rent for the following months, to the extent
this advance payment exceeds the first monthly installments of Base Rent as a
result of said final measurement of the Buildings). If the Commencement Date is
other than the first day of a calendar month, the first installment of Base Rent
shall be paid on the first day of the calendar month immediately succeeding the
Commencement Date and shall include pro rata payment for the calendar month in
which the Commencement Date occurs, less credit for the advance payment.

      Section 4.04. Absolute Triple Net Lease.

      (a) This Lease is what is commonly called a "Absolute Triple Net Lease,"
it being understood that Lessor shall receive the Base Rent set forth in Section
4.01. free and clear of any and all expenses, costs, impositions, taxes,
assessments, liens or charges of any nature whatsoever. Lessee shall pay all
rent in lawful money of the United States of America to Lessor at the notice
address stated herein or to such other persons or at such other places as Lessor
may designate in writing on or before the due date specified for same without
prior demand, set-off or deduction of any nature whatsoever. It is the intention
of the parties hereto that this Lease shall not be terminable for any reason by
Lessee, and that except as herein expressly provided in Articles III, VIII and
XIII, concerning delay, destruction and condemnation, Lessee shall in no event
be entitled to any abatement of or reduction in rent payable under this Lease.
Any present or future law to the contrary shall not alter this agreement of the
parties.

      (b) To the extent not paid pursuant to other provisions of this Lease, and
at Lessor's sole election, Lessor may submit invoices and Lessee shall pay
Additional Rent in monthly installments on the first day of each month in
advance in an amount to be estimated by Lessor, based on Lessor's experience in
managing office/research and development projects. Within ninety (90) days
following the end of the period used by Lessor in estimating Additional Rent,
Lessor shall furnish to Lessee a statement (hereinafter referred to as "Lessor's
Statement") of the actual amount of Lessee's proportionate share of such
Additional Rent, or Lessor shall remit or credit to Lessee, as the case may be,
the difference between the estimated amounts paid by Lessee and the actual
amount of Lessee's Additional Rent for such period as shown by such statement.
Monthly installments for the ensuing year shall be adjusted upward or downward
as set forth in Lessor's Statement.

      Section 4.05. Additional Rent. In addition to the Base Rent reserved by
Section 4.01., Lessee shall pay (with respect to the Premises), as Additional
Rent, all taxes, assessments, fees and other impositions in accordance with the
provisions of Article IX, insurance premiums in accordance with the provisions
of Article VII, operating charges, maintenance, repair and replacement costs and
expenses in accordance with the provisions of Article VI and any other charges,
costs and expenses (including appropriate reserves therefor) which are
contemplated or which may arise under any provision of this Lease during the
Lease Term, plus a Management Fee to Lessor equal to 3% of the Base Rent. The
Management Fee is due and payable, in advance, with each installment of Base
Rent. All of such charges, costs, expenses, Management Fee and all other amounts
payable by Lessee hereunder, shall constitute Additional Rent, and upon the
failure of Lessee to pay any of such charges, costs or expenses, Lessor shall
have the


                                       8


same rights and remedies as otherwise provided in this Lease for the failure of
Lessee to pay Base Rent. Notwithstanding any other provision of this Lease,
Additional Rent shall not include: (i) depreciation, interest, or amortization
on mortgages or ground lease payments, (ii) legal fees incurred in negotiating
and enforcing tenant leases, (iii) real estate brokers' leasing commissions,
(iv) initial improvements to tenant spaces, or alterations thereto requested by
tenants, (v) costs of any items to the extent Lessor receives reimbursement for
same from insurance proceeds or a third party, (vi) interest, principal,
depreciation, attorney fees, costs of environmental investigations or reports,
points, fees, and other lender costs and closing costs on any mortgage or
mortgages, ground lease payments, or other debt instrument encumbering any
portion of the Property, (vii) costs of (a) partnership or corporate accounting
and legal matters; defending or prosecuting any lawsuit with any mortgagee,
lender, ground lessor, broker, tenant, occupant, or prospective tenant or
occupant; selling or syndicating any of Lessor's interest in the Property; and
disputes between Lessor and Lessor's property manager; (b) the salaries of
management personnel who are not directly related to the Property and primarily
engaged in the operation, maintenance, and repair of the Property, except to the
extent that those costs and expenses are included in the management fees; (c)
wages, salaries, and other compensation paid to any executive employee of Lessor
or Lessor's property manager above the grade of building manager for the
Property; (viii) costs incurred because any Building or Outside Areas violate
any valid, applicable building code, regulation, or law in effect and as
interpreted by government authorities before the date on which this Lease is
signed for fines, penalties, interest, and the costs of repairs, replacements,
alterations, or improvements necessary to make any Building or Outside Areas
comply with applicable past laws in effect and as interpreted by government
authorities before the date on which this Lease is signed, such as sprinkler
installation or requirements under the Americans With Disabilities Act of 1990
(42 USC ss.ss.12101-12213); (ix) costs of initial construction of the Buildings
and other improvements to the Property; (x) charitable or political
contributions made by Lessor.

      Section 4.06. Security Deposit. Within five (5) business days after the
date on which this Lease is executed by Lessee and Lessor, Lessee shall deposit
with Lessor a Security Deposit equal to twelve (12) months of Base Rent
estimated in the amount of Twenty Five Million Seven Hundred Forty Thousand
Dollars and no Cents ($25,740,000.00) in the form of cash or an unconditional,
irrevocable standby letter of credit, with Lessor as beneficiary and providing
for payment on presentation of Lessor's drafts on sight without documents and
drawable in whole or in part on a money center bank in San Francisco approved by
Lessor and otherwise in a form acceptable to Lessor, all in its sole discretion,
with a term of at least twelve (12) months and with a term during the last year
of the Lease Term which includes at least one full month following the
Expiration Date (the "Security Deposit"). The Security Deposit shall be held by
Lessor as security for the faithful performance by Lessee of all of the terms,
covenants, and conditions of this Lease applicable to Lessee. If Lessee defaults
with respect to any provision of this Lease, including but not limited to, the
provisions relating to the construction of Tenant Improvements and the condition
of the Premises upon Lease Termination, Lessor may (but shall not be required
to) use, apply or retain all or any part of the Security Deposit for the payment
of any amount which Lessor may spend by reason of Lessee's default or to
compensate Lessor for any loss or damage which Lessor may suffer by reason of
Lessee's default and if all or any part of the Security Deposit is in the form a
of a letter of credit, Lessor may draw on all or any part of same and thereafter
retain any unapplied portion as a cash Security Deposit. If any portion of the


                                       9


Security Deposit is so used or applied, Lessee Shall, within ten (10) days after
written demand therefor, deposit cash with Lessor in an amount sufficient to
restore the Security Deposit to its original amount. Lessee's failure to do so
shall be a material default and breach of this Lease by Lessee. The rights of
Lessor pursuant to this Section 4.06. are in addition to any rights which Lessor
may have pursuant to Article XII below. If Lessee fully and faithfully performs
every provision of this Lease to be performed by it, the Security Deposit or any
balance thereof shall be returned (without interest) to Lessee (or, at Lessor's
option, to the last assignee of Lessee's interests hereunder) at Lease
expiration or termination and after Lessee has vacated the Premises. Lessor
shall not be required to keep the Security Deposit separate from Lessor's
general funds or be deemed a trustee of same. If the Security Deposit is in
whole or in part in the form of a Letter of Credit, failure of Lessee to deliver
a replacement Letter of Credit to Lessor at least forty-five (45) business days
prior to the expiration date of any current Letter of Credit shall constitute a
separate default entitling Lessor to draw down immediately and entirely on the
current Letter of Credit and the proceeds shall constitute a cash Security
Deposit. The amount of the Security Deposit shall be reduced to a cash amount
equal to three months of Base Rent at the rate scheduled for the final year of
the initial Lease Term, in cash, upon Lessee's achievement of four (4)
consecutive calendar quarters of an annualized run rate of $750,000,000.00 in
revenue and $100,000,000.00 in net income.

                                  ARTICLE V USE

      Section 5.01. Permitted Use and Limitations on Use. The Premises shall be
used and occupied only for office, research and development, together with such
ancillary uses which do not cause excessive wear of the Premises or increase the
potential liability of Lessor, and for no other use, without Lessor's prior
written consent. Lessee shall not use, suffer or permit the use of the Premises
in any manner that will tend to create waste, nuisance or unlawful acts. In no
event shall it be unreasonable for Lessor to withhold its consent as to uses
which it determines would tend to increase materially the wear of the Premises
or any part thereof or increase the potential liability of Lessor or decrease
the marketability, financability, leasability or value of the Premises. Lessee
shall not do anything in or about the Premises which will (i) cause structural
injury to any Building, or (ii) cause damage to any part of any Building except
to the extent reasonably necessary for the installation of Lessee's trade
fixtures and Lessee's Alterations, and then only in a manner which has been
first approved by Lessor in writing. Lessee shall not operate any equipment
within the Premises which will (i) materially damage any Building or the Outside
Area, (ii) overload existing electrical systems or other mechanical equipment
servicing any Building, (iii) impair the efficient operation of the sprinkler
system or the heating, ventilating or air conditioning ("HVAC") equipment within
or servicing any Building, or (iv) damage, overload or corrode the sanitary
sewer system. Lessee shall not attach, hang or suspend anything from the
ceiling, roof, walls or columns of any Building or set any load on the floor in
excess of the load limits for which such items are designed nor operate hard
wheel forklifts within the Premises. Any dust, fumes, or waste products
generated by Lessee's use of the Premises shall be contained and disposed so
that they do not (i) create an unreasonable fire or health hazard, (ii) damage
the Premises, or (iii) result in the violation of any law. Except as approved by
Lessor, Lessee shall not change the exterior of any Building, or install any
equipment or antennas on or make any penetrations of the exterior or roof of any
Building.


                                       10


Lessee shall not conduct on any portion of the Premises any sale of any kind,
including any public or private auction, fire sale, going-out-of-business sale,
distress sale or other liquidation sale. No materials, supplies, tanks or
containers, equipment, finished products or semifinished products, raw
materials, inoperable vehicles or articles of any nature shall be stored upon or
permitted to remain within the Outside Areas of the Premises except in fully
fenced and screened areas outside the Buildings which have been designed for
such purpose and have been approved in writing by Lessor for such use by Lessee.

      Section 5.02. Compliance with Law.

      (a) Lessor shall deliver: each Building to Lessee free of violations of
any covenants or restrictions of record, or any applicable-law, building code,
regulation or ordinance in effect on the date of delivery, including without
limitation, the Americans with Disability Act.

      (b) Except as provided in Section 5.02.(a), Lessee shall, at Lessee's cost
and expense, comply promptly with all statutes, ordinances, codes, rules,
regulations and orders, and all covenants and restrictions of record, and
requirements applicable to the Premises and Lessee's use and occupancy of same
in effect during any part of the Lease Term, whether the same are presently
foreseeable or not, and without regard to the cost or expense of compliance.

      (c) By executing this Lease, Lessee acknowledges that it has reviewed and
satisfied itself as to its compliance, or intended compliance with the
applicable zoning and permit laws, hazardous materials and waste requirements,
and all other statutes, laws, or ordinances relevant to the uses stated in
Section 5.01., above.

      Section 5.03. Condition of Premises at Delivery of Possession. Subject to
all of the terms of this Lease for the construction of Tenant Improvements.
Lessor shall deliver each Building to Lessee with the plumbing, lighting,
heating, ventilating, air conditioning, gas, electrical, and sprinkler systems
and loading doors as set forth in Exhibit "D" in proper operating condition and
built substantially in accordance with the approved plans therefor, and in a
workmanlike manner. Except as otherwise provided in this Lease, Lessee hereby
accepts the Premises in their condition existing as of the Commencement Date,
subject to all applicable zoning, municipal, county and state laws, ordinances
and regulations governing and regulating the use and condition of the Premises,
and any covenants or restrictions, liens, encumbrances and title exceptions of
record, and accepts this Lease subject thereto and to all matters disclosed
thereby and by any exhibits attached hereto. Lessee acknowledges that neither
Lessor nor any agent of Lessor has made any representation or warranty as to the
present or future suitability of the Premises for the conduct of Lessee's
business.

      Section 5.04. Defective Condition at Commencement Date. In the event that
it is determined, and Lessee notifies Lessor in writing, as to each Building
within one year after delivery of such Building to Tenant, that any of the
obligations of Lessor set forth in Section 5.02.(a) or Section 5.03.(a) were not
performed with respect to such Building, then it shall be the obligation of
Lessor, and the sole right and remedy of Lessee, after receipt of written notice
from Lessee setting forth with specificity the nature of the failed performance,
to promptly, within a reasonable time and at Lessor's sole cost, correct same.
Lessee's failure to give such written


                                       11


notice to Lessor within each such one year period shall constitute a conclusive
presumption that Lessor has complied with all of Lessor's obligations under the
foregoing Sections 5.02. and 5.03., and any required correction after that date
shall be performed by Lessee, at its sole cost and expense except for those
express obligations of Lessor under Section 6.01 (b). As each Building is
delivered, Lessor shall promptly assign to Lessee all of Lessor's contractor's
and manufacturer's guarantees, warranties and causes of action with respect to
the subject Building except those pertaining to Lessor obligations which could
arise under this Section 5.04. and at the end of each one year period described
above of the Lease Term, Lessor shall promptly assign to Lessee all of Lessor's
remaining contractor's and/or manufacturer's guarantees, warranties, and causes
of action with respect to the subject Building except those pertaining to Lessor
obligations which could arise under Section 6.01 (b).

      Section 5.05. Building Security. Lessee acknowledges and agrees that it
assumes sole responsibility for security at the Premises for its agents,
employees, invitees, licensees, contractors, guests and visitors and will
provide such systems and personnel for same including, without limitation, the
Outside Area as it deems necessary or appropriate and at its sole cost and
expense. Lessee acknowledges and agrees that Lessor does not intend to provide
any security system or security personnel at the Premises, including, without
limitation, at the Outside Areas.

      Section 5.06. Rules and Regulations. Lessor may from time-to-time
promulgate reasonable and nondiscriminatory rules and regulations applicable for
the care and orderly management of the Premises. Such rules and regulations
shall be binding upon Lessee upon delivery of a copy thereof to Lessee, and
Lessee agrees to abide by such rules and regulations. A copy of the initial
Rules and Regulations is attached hereto as Exhibit "L." If there is a conflict
between the rules and regulations and any of the provisions of this Lease, the
provisions of this Lease shall prevail. Lessor shall not be responsible for the
violation of any such rules and regulations by any person, including, without
limitation, Lessee or its employees, agents, invitees, licensees, guests,
visitors or contractors.

      Section 5.07. Moffett Park TDM Plan. Lessee has reviewed and analyzed the
Moffett Park Transportation Demand Management Plan (a copy of which is attached
hereto as Exhibit M), and understands that it is obligated to comply fully and
timely with same (and any revisions, supplements or successor plans thereto) at
Lessee's sole cost and expense to achieve the specified goal, and that failure
to do so will (i) constitute a material default hereunder, and (ii) expose
Lessor to possible penalties and damages to which Lessee's indemnity obligations
under this Lease shall apply, provided, that, Lessee shall have no obligation
with respect to the construction of the Light Rail Station and Lessor shall, at
its own cost and expense comply with the obligation to (i) design and designate
parking spaces for exclusive use of carpools and vanpools, (ii) install bicycle
racks and lockers, (iii) install a carpool/vanpool/shuttle pickup area, and (iv)
install pedestrian, bike circulation links, perimeter walking and jogging paths,
and meditation gardens and seating areas required under Part II of the TDM Plan,
as well as any other site improvement work (i.e. with respect to the Project
exterior but not to the Buildings), required by amendment to the TDM Plan prior
to the Commencement Date. Lessor shall construct shower and clothing lockers
required under the TDM Plan (and any other interior improvements required by
amendment to the TDM Plan) at Lessee cost and expense as part of the Tenant
Improvements.


                                       12


                                   ARTICLE VI
                      MAINTENANCE, REPAIRS AND ALTERATIONS

      Section 6.01. Maintenance of Premises.

      (a) Throughout the Lease Term (except as provided in 6.01.(b)), Lessee, at
its sole cost and expense, shall keep, maintain, repair and replace the Premises
and all improvements and appurtenances in or serving the Premises, including,
without limitation, all interior and exterior-walls, all doors and windows, all
roof membranes, all elevators and stairways, all wall surfaces and floor
coverings, all Tenant Improvements and alterations, additions and improvements
installed during the Lease Term, all sewer, plumbing, electrical, lighting,
heating, ventilation and cooling systems, fire sprinklers, fire safety and
security systems, fixtures and appliances and all wiring and glazing, in the
same good order, condition and repair as they are in on the Commencement Date,
or any later date of installation, reasonable wear excepted, provided that wear
which could be prevented by first class maintenance shall not be deemed
reasonable.

      (b) Lessor, at its sole cost and expense, shall repair defects in the
exterior walls (including all exterior glass which is damaged by structural
defects in such exterior walls), supporting pillars, structural walls, roof
structure and foundations of the Buildings and sewer storm drainage and plumbing
systems outside the Buildings but within the Project, provided that the need for
repair is not caused by Lessee, in which event Lessor shall repair same and
Lessee shall reimburse Lessor for the cost and expense of same except to the
extent of insurance proceeds received for same. Lessor shall replace the roof
membrane of each Building, the parking lot surface, landscaping, drainage,
irrigation, sprinkler systems as well as sewer and plumbing systems outside the
Buildings when the useful life of each has expired, and Lessee shall pay that
portion of the cost of each replacement, together with annual interest at the
Agreed Rate which shall be amortized over the useful life of each such
replacement applicable to the balance of the Lease Term, in equal monthly
installments due and payable with installments of Base Rent. Lessee shall give
Lessor written notice of any need of repairs which are the obligation of Lessor
hereunder and Lessor shall have a reasonable time to perform same. Should Lessor
default as provided in Section 12.03 with respect to its obligation to make any
of the repairs assumed by it hereunder, Lessee shall have the right to perform
such repairs and Lessor agrees that within thirty (30) days after written demand
accompanied by detailed invoice(s), it shall pay to Lessee the cost of any such
repairs together with accrued interest from the date of Lessee's payment at the
Agreed Rate. Lessor shall not be liable to Lessee, its employees, invitees, or
licensees for any damage to person or property, and Lessee's sole right and
remedy shall be the performance of said repairs by Lessee with right of
reimbursement from Lessor of the reasonable fair market cost of said repairs,
not exceeding the sum actually expended by Lessee, together with accrued
interest from the date of Lessee's payment at the Agreed Rate, provided that
nothing herein shall be deemed to create a right of setoff or withholding by
Lessee of Base Rent or Additional Rent or any other amounts due herein. Lessee
hereby expressly waives all rights under and benefits of Sections 1941 and 1942
of the California Civil Code or under any similar law, statute or ordinance now
or hereafter in effect to make repairs and offset


                                       13


the cost of same against rent or to withhold or delay any payment of rent or any
other of its obligations hereunder as a result of any default by Lessor under
this Section 6.01(b).

      (c) Lessee agrees to keep the Premises, both inside and out, clean and in
sanitary condition as required by the health, sanitary and police ordinances and
regulations of any political subdivision having jurisdiction and to remove all
trash and debris which may be found in or around the Premises. Lessee further
agrees to keep the interior surfaces of each Building, including, without
limitation, windows, floors, walls, doors, showcases and fixtures, clean and
neat in appearance.

      (d) If Lessee refuses or neglects to commence such repairs and/or
maintenance for which Lessee is responsible under this Article VI within a
thirty (30) day period (or as soon as practical and in no event later than ten
(10) days if the failure to initiate the repair threatens to cause further
damage to the Premises) after written notice from Lessor and thereafter
diligently prosecute the same to completion, then Lessor may (i) enter the
Premises (except in an emergency, upon at least twenty-four (24) hours advanced
written notice) during Lessor's business hours and cause such repairs and/or
maintenance to be made and shall not be responsible to Lessee for any loss or
damage occasioned thereby and Lessee agrees that upon demand, it shall pay to
Lessor the reasonable cost of any such repairs, not exceeding the sum actually
expended by Lessor, together with accrued interest from the date of Lessor's
payment at the Agreed Rate, and (ii) elect to enter into a maintenance contract
at a market rate for first-rate maintenance with a third party for the
performance of all or a part of Lessee's maintenance obligations, whereupon,
Lessee shall be relieved from its obligations to perform those maintenance
obligations expressly covered by such maintenance contract, and Lessee shall
bear the entire cost of such maintenance contract which shall be due and paid in
advance, as Additional Rent, on a monthly basis with Lessee's Base Rent
payments.

      Section 6.02. Maintenance of Outside Areas. Subject to 6.01.(c) and
subject to Lessee paying the cost and expense for same pursuant to Section 4.05,
Lessor shall maintain, repair and replace all improvements on the Property and
outside of the Buildings, including, without limitation, landscaping, sidewalks,
walkways, driveways, curbs, parking lots (including striping), parking
structure, sprinkler systems, lighting (per City of Sunnyvale requirements), and
surface water drainage systems ("Outside Areas").

      Section 6.03. Alterations, Additions and Improvements. No alterations,
additions, or improvements ("Alterations") shall be made to the Premises by
Lessee without the prior written consent of Lessor which Lessor will not
unreasonably withhold, provided, however, that Lessee may make Alterations which
do not affect any Building system, exterior appearance, structural components or
structural integrity and which do not exceed, with respect to each Building,
collectively Fifty Thousand Dollars ($50,000) in cost within any twelve (12)
month period, without Lessor's prior written consent. As a condition to Lessor's
obligation to consider any request for consent hereunder, Lessee shall pay
Lessor upon demand for the reasonable costs and expenses of consultants,
engineers, architects and others for reviewing plans and specifications and for
monitoring the construction of any proposed Alterations. Lessor may require
Lessee to remove any such Alterations at the expiration or termination of the
Lease Term and to restore the Premises to their prior condition by written
notice given on or before the earlier of (i) the


                                       14


expiration of the Lease Term, or (ii) thirty (30) days after termination of the
Lease, or (iii) thirty (30) days after a written request from Lessee for such
notice from Lessor provided, that, if Lessee requests same from Lessor, Lessor
will notify Lessee within five (5) business days after receipt of Lessee's
request and a copy of all plans and specifications for the proposed Alteration
whether it will require removal. All Alterations to be made to the Premises
shall be made under the supervision of a competent, California licensed
architect and/or competent California licensed structural engineer (each of whom
has been reasonably approved by Lessor and such approval will not be
unreasonably withheld) and shall be made in accordance with plans and
specifications which have been furnished to and approved by Lessor in writing
prior to commencement of work. All Alterations shall be designed, constructed
and installed at the sole cost and expense of Lessee by California licensed
architects, engineers, and contractors approved by Lessor, in compliance with
all applicable law, and in good and workmanlike manner. Any Alteration except
furniture and trade fixtures, shall become the property of Lessor at the
expiration, or sooner termination of the Lease, unless Lessor directs otherwise,
provided that Lessee shall retain title to all furniture and trade fixtures
placed on the Premises. All heating, lighting, electrical, air conditioning,
full height partitioning (but not moveable, free standing cubicle-type
partitions which do not extend to the ceiling or connect to Building walls),
drapery and carpeting installations made by Lessee together with all property
that has become an integral part of the Premises, shall be and become the
property of Lessor upon the expiration, or sooner termination of the Lease, and
shall not be deemed trade fixtures. Within sixty (60) days after completion of
any Alteration, Lessee shall provide Lessor with a complete set of "as built"
plans for same.

      Section 6.04. Covenant Against Liens. Lessee shall not allow any liens
arising from any act or omission of Lessee to exist, attach to, be placed on, or
encumber Lessor's or Lessee's interest in the Premises or any part thereof, or
any portion thereof, by operation of law or otherwise. Lessee shall not suffer
or permit any lien of mechanics, material suppliers, or others to be placed
against the Premises or any portion thereof with respect to work or services
performed or claimed to have been performed for Lessee or materials furnished or
claimed to have been furnished to Lessee or the Premises. Lessor has the right
at all times to post and keep posted on the Premises any notice that it
considers necessary for protection from such liens. At least seven (7) days
before beginning construction of any Alteration, Lessee shall give Lessor
written notice of the expected commencement date of that construction to permit
Lessor to post and record a notice of nonresponsibility. If any such lien
attaches or Lessee receives notice of any such lien, Lessee shall cause the lien
to be promptly released and removed of record. Despite any other provision of
this Lease, if the lien is not released and removed within twenty (20) days
after Lessor delivers notice of the lien to Lessee, Lessor may immediately take
all action necessary to release and remove the lien, without any duty to
investigate the validity of it. All expenses (including reasonable attorney fees
and the cost of any bond) incurred by Lessor in connection with a lien incurred
by Lessee or its removal shall be considered Additional Rent under this Lease
and be immediately due and payable by Lessee.

      Section 6.05 Reimbursable Capital Expenditures. Except for items of
capital expenditures which are to be made at Lessor's sole cost and expense
pursuant to the first sentence of Section 6.01 (b) above, capital expenditures,
together with interest thereon at the Agreed Rate, for any replacement item at
the Premises for which Lessor is responsible hereunder


                                       15


made by Lessor in excess of One Hundred Thousand Dollars ($100,000.00) during
the Lease Term shall be amortized over the remaining Lease Term for the useful
life of such replacement item with the numerator being the number of months
remaining in the Lease Term and the denominator being the number of months of
the useful life of the improvements as determined by Lessor in its sole
discretion. Lessee shall be obligated for such amortized portion of any such
expenditure in equal monthly installments due and payable with each installment
of Base Rent during the Lease Term.

                                   ARTICLE VII
                                    INSURANCE

      Section 7.01. Property/Rental Insurance for Premises. At all times during
the Lease Term, Lessor shall keep the Premises insured against loss or damage by
fire and those risks normally included in the term "all risk," including,
without limitation, coverage for (i) earthquake and earthquake sprinkler
leakage, (ii) flood, (iii) loss of rents and extra expense for eighteen (18)
months, including scheduled rent increases, (iv) boiler and machinery, (v)
Tenant Improvements, and (vi) fire damage legal liability form, including waiver
of subrogation. Any deductibles shall be paid by Lessee. The amount of such
insurance shall not be less than 100% of replacement cost. Insurance shall
include a Building Ordinance and Increased Cost of Construction Endorsement
insuring the increased cost of reconstructing the Premises incurred due to the
need to comply with applicable statutes, ordinances and requirements of all
municipal, state and federal authorities now in force, which or may be in force
hereafter. Any recovery received from said insurance policy shall be paid to
Lessor and thereafter applied by Lessor to the reconstruction of the Premises in
accordance with the provisions of Article VIII below. Lessee, in addition to the
rent and other charges provided herein, shall reimburse Lessor for the cost of
the premiums for all such insurance covering the Premises in accordance with
Article IV. Such reimbursement and shall be made within (15) days of Lessor's
delivery of a copy of Lessor's statement therefor. Lessee shall pay to Lessor
any deductible (subject to the above conditions) owing within fifteen (15) days
after delivery of notice from Lessor of the amount owing. To the extent
commercially available, Lessor's insurance shall have a deductible not greater
than fifteen percent (15%) for earthquake and five percent (5%) for the basic
"all risk" coverage.

      Section 7.02. Property Insurance for Fixtures and Inventory. At all times
during the Lease Term, Lessee shall, at its sole expense, maintain insurance
with "all risk, coverage on any fixtures, furnishings, merchandise, equipment or
personal property in or on the Premises, whether in place as of the date hereof
or installed hereafter. The amount of such insurance shall not be less than one
hundred percent (100%) of the replacement cost thereof, and Lessor shall not
have any responsibility nor pay any cost for maintaining any types of such
insurance. Lessee shall pay all deductibles.

      Section 7.03. Lessor's Liability Insurance. At all times during the Lease
Term, Lessor shall maintain a policy of policies of comprehensive general
liability insurance naming Lessor (and such others as designated by Lessor)
against liability for bodily injury, property damage on our about the Premises,
with combined single limit coverage in an amount determined by Lessor in its
sole discretion and which amount is presently in excess of Thirty Million
Dollars


                                       16


($30,000,000.00). Lessee, in addition to the rent and other charges provided
herein, agrees to pay to Lessor the premiums for all such insurance. The
insurance premiums shall be paid in accordance with Article IV, within (15) days
of Lessor's delivery of a copy of Lessor's statement therefore.

      Section 7.04. Liability Insurance Carried by Lessee. At all times during
the Lease Term (and any holdover period) Lessee shall obtain and keep in force a
commercial general liability policy of insurance protecting Lessee, Lessor and
any Lender(s) whose names are provided to Lessee as Additional Insureds against
claims from bodily injury, personal injury and property damage based upon
involving or arising out of ownership, use, occupancy or maintenance of the
Premises and all areas appurtenant thereto. Such insurance shall be on an
occurrence basis providing a single limit coverage in amount of not less than
Ten Million Dollars ($10,000,000) per occurrence with an Additional Lessors or
Premises Endorsements and containing an "Amendment of the Pollution Exclusion
Endorsement" for damage caused by heat, smoke, fumes from a hostile fire. The
limits of said insurance required by this Lease as carried by Lessee shall not,
however limit the liability of Lessee nor relieve Lessee of any obligation
hereunder. All insurance to be carried by the Lessee shall be primary to and not
contributory with, any similar insurance carried by Lessor whose insurance shall
be considered excess insurance only.

      Section 7.05. Lessee to Furnish Proof of Insurance. Lessee shall furnish
to Lessor prior to the Commencement Date, and at least thirty (30) days prior to
the expiration date of any policy, certificates indicating that the property
insurance and liability insurance required to be maintained by Lessee is in full
force and effect for the twelve (12) month period following such expiration
date; that Lessor has been named as an additional insured to the extent of
contractual liability assumed in Section 7.07. "Indemnification" and Section
7.08. "Lessor as Party Defendant"; and that all such policies will not be
canceled unless thirty (30) days prior written notice of the proposed
cancellation has been given to Lessor. The insurance shall be with insurers
approved by Lessor, provided, however, that such approval shall not be
unreasonably withheld so long as Lessee's insurance carrier has a Best's
Insurance Guide rating not less than A+ VIII. Lessor shall furnish to Lessee,
prior to the Commencement Date, and at least ten (10) days prior to the
expiration date of any policy, or if later in each case, within ten (10)
business days after receipt of a written request for same, certificates
indicating that the property insurance and liability insurance required to be
maintained by Lessor is in full force and effect for the twelve (12) month
period following such expiration date.

      Section 7.06. Mutual Waiver of Claims and Subrogation Rights. Lessor and
Lessee hereby release and relieve the other, and waive their entire claim of
recovery for loss or damage to property arising out of or incident to fire,
lightning, and the other perils included in a standard "all risk" insurance
policy when such property constitutes the Premises, or is in, on or about the
Premises, whether or not such loss or damage is due to the negligence of Lessor
or Lessee, or their respective agents, employees, guests, licensees, invitees,
or contractors. Lessee and Lessor waive all rights of subrogation against each
other on behalf of, and shall obtain a waiver of all subrogation rights from,
all property and casualty insurers referenced above.


                                       17


      Section 7.07. Indemnification and Exculpation.

      (a) Except as otherwise provided in Section 7.07.(b), Lessee shall
indemnify and hold Lessor free and harmless from any and all liability, claims,
loss, damages, causes of action (whether in tort or contract, law or equity, or
otherwise), expenses, charges, assessments, fines, and penalties of any kind,
including without limitation, reasonable attorney fees, expert witness fees and
costs, arising by reason of the death or injury of any person, including any
person who is an employee, agent, invitee, licensee, permittee, visitor, guest
or contractor of Lessee, or by reason of damage to or destruction of any
property, including property owned by Lessee or any person who is an employee,
agent, invitee, permitee, visitor, or contractor of Lessee, caused or allegedly
caused (1) while that person or property is in or about the Premises; (2) by
some condition of the Premises; (3) by some act or omission by Lessee or its
agent, employee, licensee, invitee, guest, visitor or contractor or any person
in, adjacent, on, or about the Premises with the permission, consent or
sufferance of Lessee; (4) by any matter connected to or arising out of Lessee's
occupation or use of the Premises, or any breach or default in timely observance
or performance of any obligation on Lessee's part to be observed or performed
under this Lease.

      (b) Notwithstanding the provisions of Section 7.07.(a) of this Lease,
Lessee's duty to indemnify and hold Lessor harmless shall not apply to any
liability, claims, loss or damages to the extent caused solely by Lessor's
active negligence or willful acts of misconduct.

      (c) Lessee hereby waives all claims against Lessor for damages to goods,
wares and merchandise and all other personal property in, on, or about the
Premises and for injury or death to persons in, on, or about the Premises from
any cause arising at any time to the fullest extent permitted by law and in no
event shall Lessor be liable for lost profits or other consequential damages
arising from any cause or for any damage which is or could be covered by the
insurance Lessee is required to carry under this Lease.

      Section 7.08. Lessor as Party Defendant. If by reason of an act or
omission of Lessee or any of its employees, agents, invitees, licensee,
visitors, guests or contractors, Lessor is made a party defendant or a
cross-defendant to any action involving the Premises or this Lease, Lessee shall
hold harmless and indemnify Lessor from all liability or claims of liability,
including all damages, attorney fees and costs of suit.

                                  ARTICLE VIII
                              DAMAGE OR DESTRUCTION

      Section 8.01. Destruction of the Premises.

      (a) In the event of a partial destruction of the Premises during the Lease
Term from any cause, Lessor, upon receipt of, and to the extent of, insurance
proceeds paid in connection with such casualty, shall forthwith repair the same,
provided the repairs can be made within a reasonable time under state, federal,
county and municipal applicable law, but such partial destruction shall in no
way annul or void this Lease, (except as provided in Section 8.01.(b) below)
provided that Lessee shall be entitled to a proportionate credit for rent equal
to the payment of rental income insurance received by Lessor. Lessor shall use
diligence in making


                                       18


such repairs within a reasonable time period, acts of God, strikes and delays
beyond Lessor's control excepted, in which instance the time period shall be
extended accordingly, and this Lease shall remain in full force and effect, with
the rent to be proportionately reduced as provided in this Section. If the
Premises are damaged by any peril within twelve (12) months prior to the last
day of the Lease Term and, in the reasonable opinion of the Lessor's architect
or construction consultant, the restoration of the Premises cannot be
substantially completed within ninety (90) days after the date of such damage
and such damage renders unusable more than thirty percent (30%) of the Premises,
Lessor may terminate this Lease on sixty (60) days written notice to Lessee.

      (b) If the Premises are damaged or destroyed by any cause to the extent of
more than fifty percent (50%) of the total Rentable Area of all office/research
and development Buildings which are then part of the Premises during the Lease
Term, Lessor shall notify Lessee within sixty (60) days after such damage or
destruction whether it will repair the same within twelve (12) months (subject
to force majeure) from the date of such notice and if Lessor states that it will
not repair within said twelve (12) months (subject to force majeure) this Lease
shall terminate ten (10) business days after Lessor gives its notice. In the
event Lessor elects to repair, Lessor shall commence repairs within a reasonable
time and diligently proceed to complete such repairs, in each instance subject
to force majeure delays. In the event of termination, Lessor shall pay to Lessee
all insurance proceeds, if any, received by Lessor as a result of the damage or
destruction to the extent allocable to unamortized Tenant Improvements or other
Alterations installed in the damaged Buildings at Lessee's sole cost and
expense, using an amortization schedule of equal monthly installments over the
first sixty (60) months following the delivery of each damaged Building, but
only to the extent such payment will not violate the terms and conditions of any
trust deed recorded against the Project or Premises or constitute a default
thereunder.

      Section 8.02. Waiver of Civil Code Remedies. Lessee hereby expressly
waives any rights to terminate this Lease upon damage or destruction to the
Premises, including without limitation any rights pursuant to the provisions of
Section 1932, Subdivision 2 and Section 1933, Subdivision 4, of the California
Civil Code, as amended from time-to-time, and the provisions of any similar law
hereinafter enacted.

      Section 8.03. No Abatement of Rentals. The Rentals and other charges due
under this Lease shall not be reduced or abated by reason of any damage or
destruction to the Premises (except to the extent of proceeds received by Lessor
from the rental loss insurance), and Lessor shall be entitled to all proceeds of
the insurance maintained pursuant to Section 7.01. above during the period of
rebuilding pursuant to Section 8.01.(a) above, or if the Lease is terminated
pursuant to Section 8.01.(a) above. Lessee shall have no claim against Lessor,
including, without limitation, for compensation for inconvenience or loss of
business, profits or goodwill during any period of repair or reconstruction.

      Section 8.04. Liability for Personal Property. In no event shall Lessor
have any liability for, nor shall it be required to repair or restore, any
injury or damage to Lessee's personal property or to any other personal property
or to Alterations in or upon the Premises by Lessee.


                                       19


                                   ARTICLE IX
                               REAL PROPERTY TAXES

      Section 9.01. Payment of Taxes. Lessee shall pay the real property tax,
including any escaped or supplemental tax and any form of real estate tax or
assessment, general, special, ordinary or extraordinary, and any license, fee,
charge, excise or imposition ("real property tax"), imposed, assessed or levied
on or with respect to the Premises by any Federal, State, County, City or other
political subdivision or public authority having the direct or indirect power to
tax, including any improvement district thereof or any community facilities
district, as against any legal or equitable interest of Lessor in the Premises
or against the Premises or any part thereof applicable to the Premises for a
period of time included within the Lease Term. All such payments shall be made
at least ten (10) days prior to the delinquency date for such payment or ten
(10) days after Lessee's receipt of the tax bill, whichever is later.
Notwithstanding the foregoing, Lessee shall not be required to pay any net
income taxes, franchise taxes, or any succession or inheritance taxes of Lessor.
If any anytime during the Lease Term, the State of California or any political
subdivision of the state, including any county, city, city and county, public
corporation, district, or any other political entity or public corporation of
this state, levies or assesses against Lessor a tax, fee, charge or imposition,
excise on rents under the Lease, the square footage of the Premises, the act of
entering into this Lease, or the occupancy of Lessee, or levies or assesses
against Lessor any other tax, fee, or excise, however described, including,
without limitation, a so-called value added, business license, transit,
commuter, environmental or energy tax fee, charge or excise or imposition
related to the Premises as a direct substitution in whole or in part for, or in
addition to, any real property taxes on the Premises, Lessee shall pay ten (10)
days before delinquency or ten (10) days after receipt of the tax bill,
whichever is later, that tax, fee, charge, excise or imposition.

      Section 9.02. Pro Ration for Partial Years. If any such taxes paid by
Lessee shall cover any period prior to the Commencement Date or after the
Expiration Date of the Lease Term, Lessee's share of such taxes shall be
equitably prorated to cover only the period of time within the tax fiscal year
during which this Lease shall be in effect, and Lessor shall reimburse Lessee to
any extent required. If Lessee shall fail to pay any such taxes, Lessor shall
have the right to pay the same in which case Lessee shall repay such amount to
Lessor within ten (10) days after written demand, together with interest at the
Agreed Rate.

      Section 9.03. Personal Property Taxes.

      (a) Lessee shall pay prior to delinquency all taxes imposed, assessed
against and levied upon trade fixtures, furnishings, equipment and all other
personal property of Lessee contained in the Premises or elsewhere at the
Project. When possible, Lessee shall cause said trade fixtures, furnishings,
equipment and all other personal property to be assessed and billed separately
from the real property of Lessor.

      (b) If any of Lessee's said personal property shall be assessed with
Lessor's real property, Lessee shall pay Lessor the taxes attributable to Lessee
within ten (10) days after receipt of a written statement setting forth the
taxes applicable to Lessee's property.


                                       20


      (c) If Lessee shall fail to pay any such taxes, Lessor shall have the
right to pay the same, in which case Lessee shall repay such amount to Lessor
with Lessee's next rent installment together with interest at the Agreed Rate.

                                    ARTICLE X
                                    UTILITIES

      Section 10.01. Lessee to Pay. Lessee shall pay prior to delinquency and
throughout the Lease Term, all charges for water, gas, heating, cooling, sewer,
telephone, electricity, garbage, air conditioning and ventilation, janitorial
service, landscaping and all other materials and utilities supplied to the
Premises. The disruption, failure, lack or shortage of any service or utility
due to any cause whatsoever shall not affect any obligation of Lessee hereunder,
and Lessee shall faithfully keep and observe all the terms, conditions and
covenants of this Lease and pay all rent due hereunder, all without diminution,
credit or deduction.

                                   ARTICLE XI
                            ASSIGNMENT AND SUBLETTING

      Section 11.01. Lessor's Consent Required. Except as provided in Section
11.02, Lessee shall not voluntarily or by operation of law assign, transfer,
mortgage, sublet, license or otherwise transfer or encumber all or any part of
Lessee's interest in this Lease or in the Premises or any part thereof, without
Lessor's prior written consent which Lessor shall not unreasonably withhold or
delay. Lessor shall respond in writing to Lessee's request for consent hereunder
in a timely manner and any attempted assignment, transfer, mortgage,
encumbrance, subletting or licensing without such consent shall be void, and
shall constitute a breach of this Lease. By way of example, but not limitation,
reasonable grounds for denying consent include: (i) poor credit history or
insufficient financial strength of transferee, (ii) transferee's intended use of
the Premises is inconsistent with the permitted use or will materially and
adversely affect Lessor's interest. Lessee shall reimburse Lessor upon demand
for Lessor's reasonable costs and expenses (including attorneys' fees, architect
fees and engineering fees) involved in renewing any request for consent whether
or not consent is granted.

      Section 11.02. Lessee Affiliates. Without the approval of Lessor, Lessee
may assign or sublet the Premises, or any portion thereof, to any corporation
which controls, is controlled by, or is under common control with Lessee, or to
any corporation resulting from the merger or consolidation with Lessee, or to
any person or entity which acquires all, or substantially all of the assets of
Lessee as a going concern of the business that is being conducted on the
Premises ("Affiliates"), provided that said assignee or sublessee assumes, in
full, the obligations of Lessee under this Lease and provided further that the
use to which the Premises will be put does not materially change and provided
further, Lessee shall provide Lessor at least ten (10) business days advance
written notice of any such assignment or sublease, including fully executed
assignment or sublease documents and evidence that the transaction is of a type
described in this Section 11.02. Any such assignment or sublease shall not, in
any way, affect or limit the liability of Lessee under the terms of this Lease.


                                       21


      Section 11.03. No Release of Lessee. Regardless of Lessor's consent, no
subletting or assignment shall release Lessee of Lessee's obligation or alter
the primary liability of Lessee to pay the rent and to perform all other
obligations to be performed by Lessee hereunder. The acceptance of rent by
Lessor from any other person shall not be deemed consent to any subsequent
assignment or subletting. In the event of default by any assignee of Lessee or
any successor of Lessee, in the performance of any of the terms hereof, Lessor
may proceed directly against Lessee without the necessity of exhausting remedies
against said assignee.

      Section 11.04. Excess Rent. In the event Lessor shall consent to a
sublease or an assignment, Lessee shall pay to Lessor with its regularly
scheduled Base Rent payments, fifty percent (50%) of all sums and the fair
market value of all consideration collected or received by Lessee from a
sublessee or assignee which are in excess of the Base Rent and Additional Rent
due and payable with respect to the subject space pursuant to Article IV for the
time period encompassed by the sublease or assignment term, after first
deducting reasonable leasing commissions, provided that this provision shall not
apply to consideration for the first twelve (12) months of the first sublease of
any space within any office/research development Building (and not to any
subsequent sublease of such space) so long as such sublease is for at least
twenty four (24) months and that the consideration for the second and any
subsequent twelve (12) month period of such sublease (including extension
options) is not less than the consideration for the first twelve (12) months.

      Section 11.05. No Impairment of Security. Lessee's written request to
Lessor for consent to an assignment or subletting or other form of transfer
shall be accompanied by (a) the name and legal composition of the proposed
transferee; (b) the nature of the proposed transferee's business to be carried
on in the Premises; (c) the terms and provisions of the proposed transfer
agreement; and (d) such financial and other reasonable information as Lessor may
request concerning the proposed transferee.

      Section 11.06. Lessor's Recapture Rights.

      (a) Lessor's Recapture Rights. Notwithstanding any other provision of this
Article 11, in the event that Lessee proposes to sublease or assign or otherwise
transfer any interest in this Lease or the Premises or any part thereof
affecting (collectively with all other such subleases, assignments, or transfers
then in effect) more than sixty percent (60%) of the square footage of the total
Rentable Area of the four (4) office/research and development Buildings
("Recapture Space"), then Lessor shall have the option to recapture the
Recapture Space by written notice to Lessee ("Recapture Notice") given within
ten (10) business days after Lessor receives any notice of such proposed
assignment or sublease or other transfer ("Transfer Notice"). A timely Recapture
Notice terminates this Lease for the Recapture Space, effective as of the date
specified in the Transfer Notice. If Lessor declines or fails timely to deliver
a Recapture Notice, Lessor shall have no further right under this Section 11.06
to the Recapture Space unless it becomes available again after such transfer by
Lessee or unless Lessee proposes another such transfer. For purposes of this
Section 11.05, the Rentable Area of the Amenity Building shall not be utilized
in the calculation of Recapture Space. This Section 11.06 shall not apply to the
sublease of space or assignment of this Lease to an Affiliate as defined in
Section 11.02 above.


                                       22


      (b) Consequences of Recapture. To determine the new Base Rent under this
Lease if Lessor recaptures the Recapture Space, the then current Base Rent
(immediately before Lessor's recapture) under the Lease shall be multiplied by a
fraction, numerator of which is the square feet of the Rentable Area retained by
Lessee after Lessor's recapture and the denominator of which is the total square
feet of the Rentable Area before Lessor's recapture. The Additional Rent, to the
extent that it is calculated on the basis of the square feet within the affected
Building, shall be reduced to reflect Lessee's proportionate share based on the
square feet of the Building retained by Lessee after Lessor's recapture. This
Lease as so amended shall continue thereafter in full force and effect. Either
party may require written confirmation of the amendments to this Lease
necessitated by Lessor's recapture of the Recapture Space. If Lessor recaptures
the Recapture Space, Lessor shall, at Lessor's sole expense, construct, paint,
and furnish any partitions required to segregate the Recapture Space from the
remaining Premises retained by Lessee.

                                   ARTICLE XII
                               DEFAULTS; REMEDIES

      Section 12.01. Defaults. The occurrence of any one or more of the
following events shall constitute a material default and breach of this Lease by
Lessee:

      (a) The abandonment of the Premises by Lessee or the commission of waste
at the Premises or the making of an assignment or subletting in violation of
Article XI, provided however, abandonment shall be considered to not occur if
the Premises are maintained and occupied to the extent necessary to maintain the
insurance on each and every portion of the Premises;

      (b) The failure by Lessee to make any payment of rent or any other payment
required to be made by Lessee hereunder, as and when due, if such failure
continues for a period of five (5) business days after written notice thereof
from Lessor to Lessee. In the event that Lessor serves Lessee with a Notice to
Pay Rent or Quit in the form required by applicable Unlawful Detainer statutes
such Notice shall constitute the notice required by this paragraph, provided
that the cure period stated in the Notice shall be five (5) business days rather
than the statutory three (3) days;

      (c) Lessee's failure to provide, (i) any instrument or assurance as
required by Section 7.05, or (ii) estoppel certificate as required by Section
15.01, or (iii) any document which Lessee is obligated to provide under Section
17.13 subordinating this Lease to a Lender's deed of trust if such failure
continues for five (5) business days after written notice of the failure from
Lessor to Lessee. In the event Lessor serves Lessee with a Notice to Perform
Covenant or Quit in the form required by applicable Unlawful Detainer Statutes,
such Notice shall constitute the notice required by this paragraph, provided
that the cure period stated in the Notice shall be five (5) business days rather
than the statutory three (3) days;


                                       23


      (d) The failure by Lessee to observe or perform any of the covenants,
conditions or provisions of this Lease to be observed or performed by Lessee,
other than described in paragraph (a) (b) or (c) above, if such failure
continues for a period of ten (10) days after written notice thereof from Lessor
to Lessee; provided, however, that if the nature of Lessee's default is such
that more than ten (10) days are reasonably required for its cure, then Lessee
shall not be deemed to be in default if Lessee commences such cure within said
ten (10) day period and thereafter diligently prosecutes such cure to
completion;

      (e) (i) The making by Lessee of any general arrangement or assignment for
the benefit of creditors; (ii) the filing by Lessee of a voluntary petition in
bankruptcy under Title 11 U.S.C. or the filing of an involuntary petition
against Lessee which remains uncontested for a period of sixty (60) days; (iii)
the appointment of a trustee or receiver to take possession of substantially all
of Lessee's assets located at the Premises or of Lessee's interest in this
Lease; or (iv) the attachment, execution or other judicial seizure of
substantially all of Lessee's assets located at the Premises or of Lessee's
interest in this Lease, provided, however, in the event that any provisions of
this Section 12.01(e) is contrary to any applicable law, such provision shall be
of no force or effect;

      (f) The discovery by Lessor that any financial statement given to Lessor
by Lessee, or any guarantor of Lessee's obligations hereunder, was materially
false;

      (g) The failure by Lessee to timely observe and perform any obligation
under the City of Sunnyvale TDM Plan or any successor or similar plan or
requirement if such failure continues for five (5) business days (or if longer,
any cure period provided by the City of Sunnyvale before it levies any penalty,
fines or taxes or any other action adverse to Lessor) after written notice of
the failure from Lessor to Lessee;

      (h) The failure by Lessee to deposit timely any letters of credit or to
fail to timely pay the General Contractor for costs of Tenant Improvements as
required by Sections 2.04(g) if such failure continues for five (5) business
days after written notice of the failure from Lessor to Lessee.

      Section 12.02. Remedies. In the event of any such material default and
breach by Lessee, Lessor may at any time thereafter, and without limiting Lessor
in the exercise of any right or remedy which Lessor may have by reason of such
default and breach:

      (a) Terminate Lessee's right to possession of the Premises by any lawful
means including by way of unlawful detainer (and without any further notice if a
notice in compliance with the unlawful detainer statutes and in compliance with
paragraphs (b), (c) (d) (g) or (h) of Section 12.01 above has already been
given), in which case this Lease shall terminate and Lessee shall immediately
surrender possession of the Premises to Lessor. In such event Lessor shall be
entitled to recover from Lessee all damages incurred by Lessor by reason of
Lessee's default including, but not limited to, (i) the cost of recovering
possession of the Premises including reasonable attorneys' fees related thereto;
(ii) the worth at the time of the award of any unpaid rent that had been earned
at the time of the termination, to be computed by allowing interest at the
Agreed Rate but in no case greater than the maximum amount of interest permitted
by law,


                                       24


(iii) the worth at the time of the award of the amount by which the unpaid rent
that would have been earned between the time of the termination and the time of
the award exceeds the amount of unpaid rent that Lessee proves could reasonably
have been avoided, to be computed by allowing interest at the Agreed Rate but in
no case greater than the maximum amount of interest permitted by law, (iv) the
worth at the time of the award of the amount by which the unpaid rent for the
balance of the Lease Term after the time of the award exceeds the amount of
unpaid rent that Lessee proves could reasonably have been avoided, to be
computed by discounting that amount at the discount rate of the Federal Reserve
Bank of San Francisco at the time of the award plus one per cent (1%), (v) any
other amount necessary to compensate Lessor for all the detriment proximately
caused by Lessee's failure to perform obligations under this Lease, including
brokerage commissions and advertising expenses, expenses of remodeling the
Premises for a new tenant (whether for the same or a different use), and any
special concessions made to obtain a new tenant, and (vi) any other amounts, in
addition to or in lieu of those listed above, that may be permitted by
applicable law.

      (b) Maintain Lessee's right to possession as provided in Civil Code
Section 1951.4 in which case this Lease shall continue in effect whether or not
Lessee shall have abandoned the Premises. In such event Lessor shall be entitled
to enforce all of Lessor's rights and remedies under this Lease, including the
right to recover the rent as it becomes due hereunder.

      (c) Pursue any other remedy now or hereafter available to Lessor under the
laws or judicial decisions of the State of California. Unpaid amounts of rent
and other unpaid monetary obligations of Lessee under the terms of this Lease
shall bear interest from the date due at the Agreed Rate.

      Section 12.03. Default by Lessor. Lessor shall not be in default under
this Lease unless Lessor fails to perform obligations required of Lessor within
a reasonable time, but in no event later than thirty (30) days after written
notice by Lessee to Lessor and to the holder of any first mortgage or deed of
trust covering the Premises whose name and address shall have theretofore been
furnished to Lessee in writing, specifying that Lessor has failed to perform
such obligation; provided, however, that if the nature of Lessor's obligation is
such that more than thirty (30) days are required for performance then Lessor
shall not be in default if Lessor commences performance within such thirty (30)
day period and thereafter diligently prosecutes the same to completion. In the
event Lessor does not commence performance within the thirty (30) day period
provided herein, Lessee may perform such obligation and will be reimbursed for
its expenses by Lessor together with interest thereon at the Agreed Rate
provided, however, that if the parties are in dispute as to what constitutes
Lessor's obligations under this Lease, any such dispute shall be resolved by
arbitration in a manner identical to that provided in Section 8.02 above. Lessee
waives any right to terminate this Lease or to vacate the Premises on Lessor's
default under this Lease. Lessee's sole remedy on Lessor's default is an action
for damages or injunctive or declaratory relief. Notwithstanding the foregoing,
nothing herein shall be deemed applicable in the event of Lessor's delay in
delivery of the Premises. In that situation, all rights and remedies shall be
determined under Section 3.01 above.


                                       25


      Section 12.04. Late Charges. Lessee hereby acknowledges that late payment
by Lessee to Lessor of rent and other sums due hereunder will cause Lessor to
incur costs not contemplated by this Lease, the exact amount of which will be
extremely difficult to ascertain. Such costs include, but are not limited to,
processing and accounting charges, and late charges which may be imposed on
Lessor by the terms of any mortgage or trust deed covering the Premises.
Accordingly, if any installment of rent or any other sum due from Lessee shall
not be received by Lessor or Lessor's designated agent within five (5) days
after such amount is due and owing, Lessee shall pay to Lessor a late charge
equal to five percent (5%) of such overdue amount. The parties hereby agree that
such late charge represents a fair and reasonable estimate of the costs Lessor
will incur by reason of late payment by Lessee. Acceptance of such late charge
by Lessor shall in no event constitute a waiver of Lessee's default with respect
to such overdue amount, nor prevent Lessor from exercising any of the other
rights and remedies granted hereunder. In the event that a late charge is
payable hereunder, whether or not collected, for three (3) consecutive
installments of rent, then rent shall automatically become due and payable
quarterly in advance, rather than monthly, notwithstanding Section 4.01 or any
other provision of this Lease to the contrary.

                                  ARTICLE XIII
                            CONDEMNATION OF PREMISES

      Section 13.01. Total Condemnation. If the entire Premises, whether by
exercise of governmental power or the sale or transfer by Lessor to any
condemnor under threat of condemnation or while proceedings for condemnation are
pending, at any time during the Lease Term, shall be taken by condemnation such
that there does not remain a portion suitable for occupation, this Lease shall
then terminate as of the date transfer of possession is required. Upon such
condemnation, all rent shall be paid up to the date transfer of possession is
required, and Lessee shall have no claim against Lessor or the award for the
value of the unexpired portion of this Lease Term.

      Section 13.02. Partial Condemnation. If any portion of the Premises is
taken by condemnation during the Lease Term, whether by exercise of governmental
power or the sale for transfer by Lessor to an condemnor under threat of
condemnation or while proceedings for condemnation are pending, this Lease shall
remain in full force and effect except that in the event a partial taking leaves
the Premises unfit for the conduct of the business of Lessee, then Lessee shall
have the right to terminate this Lease effective upon the date transfer of
possession is required. Moreover, Lessor shall have the right to terminate this
Lease effective on the date transfer of possession is required if more than
thirty-three percent (33%) of the total square footage of the Premises is taken
by condemnation. Lessee and Lessor may elect to exercise their respective rights
to terminate this Lease pursuant to this Section by serving written notice to
the other within thirty (30) days after receipt of notice of condemnation. All
rent shall be paid up to the date of termination, and Lessee shall have no claim
against Lessor for the value of any unexpired portion of the Lease Term. If this
Lease shall not be canceled, the rent after such partial taking shall be that
percentage of the adjusted base rent specified herein, equal to the percentage
which the square footage of the untaken part of the Premises, immediately after
the taking, bears to the square footage of the entire Premises immediately
before the taking. If Lessee's continued use of the Premises requires
alterations and repair by reason of a partial


                                       26


taking, all such alterations and repair shall be made by Lessee at Lessee's
expense. Lessee waives all rights it may have under California Code of Civil
Procedure Section 1265.130 or otherwise, to terminate this Lease based on
partial condemnation.

      Section 13.03. Award to Lessee. In the event of any condemnation, whether
total or partial, Lessee shall have the right to claim and recover from the
condemning authority such compensation as may be separately awarded or
recoverable by Lessee for loss of its business fixtures, or equipment belonging
to Lessee immediately prior to the condemnation. The balance of any condemnation
award shall belong to Lessor (including, without limitation, any amount
attributable to any excess of the market value of the Premises for the remainder
of the Lease Term over the then present value of the rent payable for the
remainder of the Lease Term) and Lessee shall have no further right to recover
from Lessor or the condemning authority for any claims arising out of such
taking. Except as provided below, in connection with a condemnation: (a) Lessor
shall be entitled to receive all compensation and anything of value awarded,
paid, or received in settlement or otherwise ("Award"); and (b) Lessee
irrevocably assigns and transfers to Lessor all rights to and interests in the
Award and fully releases and relinquishes any claim to, right to make a claim
on, or interest in the Award. Notwithstanding the foregoing, Lessee shall have
the right to make a separate claim in the condemnation proceeding for: (a)
reasonable removal and relocation costs for any leasehold improvements that
Lessee has the right to remove and elects to remove (if condemnor approves of
the removal), (b) loss of goodwill, (c) relocation costs under Government Code
section 7262, the claim for which Lessee may pursue by separate action
independent of this Lease, but (d) only to the extent that any of the foregoing
does not reduce the amount of the Award payable to Lessor. Lessee shall also be
entitled to receive, if the Award expressly provides for same, an amount equal
to the unamortized cost of the Tenant Improvements or other Alterations
installed in any condemned Building at Lessee's sole cost and expense, using an
amortization schedule of equal monthly amounts for the first sixty (60) months
following the Delivery Date (or deemed Delivery Date) for such Building, but
only to the extent such payment will not violate the terms and conditions of any
trust deed recorded against the Project or Premises or constitute a default
thereunder.

                                   ARTICLE XIV
                                 ENTRY BY LESSOR

      Section 14.01. Entry by Lessor Permitted. Lessee shall permit Lessor and
its employees, agents and contractors to enter the Premises and all parts
thereof (i) upon forty-eight (48) hours notice (or without notice in an
emergency), including, without limitation, the Building and all parts thereof at
all reasonable times for any of the following purposes: to inspect the Premises;
to maintain the Premises; to make such repairs to the Premises as Lessor is
obligated or may elect to make; to make repairs, alterations or additions to any
other portion of the Premises, and (ii) upon twenty-four (24) hours notice to
show the Premises and post "To Lease" signs for the purposes of reletting during
the last twelve (12) months of the Lease Term (provided that Lessee has failed
to exercise its option to extend) or extended Lease Term to show the Premises as
part of a prospective sale by Lessor or to post notices of nonresponsibility.
With respect to any such entry which is not an emergency entry, Lessor agrees
not to unreasonably disturb Lessee's use or enjoyment of the Premises, and to
minimize disruption to Lessee as much


                                       27


as reasonably practical, Lessor shall have such right of entry without any
rebate of rent to Lessee for any loss of occupancy or quiet enjoyment of the
Premises hereby occasioned.

                                   ARTICLE XV
                              ESTOPPEL CERTIFICATE

      Section 15.01. Estoppel Certificate.

      (a) Each party ("Certifying Party") shall at any time upon not less than
fifteen (15) days' prior written notice from the other execute, acknowledge and
deliver to the other a statement in writing (i) certifying, if true, that this
Lease is unmodified and in full force and effect (or, if modified, stating the
nature of such modification and certifying, if true, that this Lease, as so
modified, is in full force and effect) and the date to which the rent and other
charges are paid in advance, if any, and (ii) acknowledging, if true, that there
are not, to Certifying Party's knowledge, any uncured defaults on the part of
the other party, or specifying such defaults if any are claimed. Any such
statement may be conclusively relied upon by any prospective purchaser or
encumbrancer of the Premises.

      (b) Each party's failure to deliver such statement within such time shall
be conclusive upon such party (i) that this Lease is in full force and effect,
without modification except as may be represented by the other party on the
notice, (ii) that there are no uncured defaults in the other party's
performance, and (iii) that not more than one month's rent has been paid in
advance.

                                   ARTICLE XVI
                               LESSOR'S LIABILITY

      Section 16.01. Limitations on Lessor's Liability. The term "Lessor" as
used herein shall mean only the owner or owners at the time in question of the
fee title of the Premises. In the event of any transfer of such title or
interest, Lessor herein named (and in case of any subsequent transfers then the
grantor) shall be relieved from and after the date of such transfer of all
liability as respects Lessor's obligations thereafter to be performed, provided
that any funds in the hands of Lessor or the then grantor at the time of such
transfer, in which Lessee has an interest, shall be delivered to the grantee.
The obligations contained in this Lease to be performed by Lessor shall, subject
as aforesaid, be binding on Lessor's successors and assigns, only during their
respective periods of ownership. For any breach of this Lease by Lessor, the
liability of Lessor (including all persons and entities that comprise Lessor,
and any successor Lessor) and any recourse by Lessee against Lessor shall be
limited to the interest of Lessor, and Lessor's successors in interest, in and
to the Premises. On behalf of itself and all persons claiming by, through, or
under Lessee, Lessee expressly waives and releases Lessor and each member, agent
and employee of Lessor from any personal liability for breach of this Lease.


                                       28


                                  ARTICLE XVII
                               GENERAL PROVISIONS

      Section 17.01. Severability. The invalidity of any provision of this Lease
as determined by a court of competent jurisdiction, shall in no way affect the
validity of any other provision hereof.

      Section 17.02. Agreed Rate Interest on Past-Due Obligations. Except as
expressly herein provided, any amount due to either party not paid when due
shall bear interest at the Bank of America prime rate plus one percent (1%)
("Agreed Rate"). Payment of such interest shall not excuse or cure any default
by Lessee under this Lease. Despite any other provision of this Lease, the total
liability for interest payments shall not exceed the limits, if any, imposed by
the usury laws of the State of California. Any interest paid in excess of those
limits shall be refunded to the payor by application of the amount of excess
interest paid against any sums outstanding in any order that payee requires. If
the amount of excess interest paid exceeds the sums outstanding, the portion
exceeding those sums shall be refunded in cash to the payor by the payee. To
ascertain whether any interest payable exceeds the limits imposed, any
nonprincipal payment (including late charges) shall be considered to the extent
permitted by law to be an expense or a fee, premium, or penalty rather than
interest.

      Section 17.03. Time of Essence. Time is of the essence in the performance
of all obligations under this Lease.

      Section 17.04. Additional Rent. Any monetary obligations of Lessee to
Lessor under the terms of this Lease shall be deemed to be Additional Rent and
Lessor shall have all the rights and remedies for the nonpayment of same as it
would have for nonpayment of Base Rent, except that the one year requirement of
Code of Civil Procedure Section 1161(2) shall apply only to scheduled
installments of Base Rent and not to any Additional Rent. All references to
"rent" (except specific references to either Base Rent or Additional Rent) shall
mean Base Rent and Additional Rent.

      Section 17.05. Incorporation of Prior Agreements, Amendments and Exhibits.
This Lease (including Exhibits A, B, C, D, E, F, G, H, I, J, K, L, M and N
contains all agreements of the parties with respect to any matter mentioned
herein. No prior agreement or understanding pertaining to any such matter shall
be effective. This Lease may be modified in writing only, signed by the parties
in interest at the time of the modification. Except as otherwise stated in this
Lease, Lessee hereby acknowledges that neither the Lessor nor any employees or
agents of the Lessor has made any oral or written warranties or representations
to Lessee relative to the condition or use by Lessee of said Premises and Lessee
acknowledges that Lessee assumes all responsibility regarding the Occupational
Safety Health Act, the legal use and adaptability of the Premises and the
compliance thereof with all applicable laws and regulations in effect during the
Lease Term except as otherwise specifically stated in this Lease. Neither party
has been induced to enter into this Lease by, and neither party is relying on,
any representation or warranty outside those expressly set forth in this Lease.


                                       29


      Section 17.06. Notices.

      (a) Written Notice. Any notice required or permitted to be given hereunder
shall be in writing and shall be given by a method described in paragraph (b)
below and shall be addressed to Lessee or to Lessor at the addresses noted
below, next to the signature of the respective parties, as the case may be.
Either party may by notice to the other specify a different address for notice
purposes. A copy of all notices required or permitted to be given to Lessor
hereunder shall be concurrently transmitted to such party or parties at such
addresses as Lessor may from time-to-time hereafter designate by notice to
Lessee, but delay or failure of delivery to such person shall not affect the
validity of the delivery to Lessor or Lessee.

      (b)   Methods of Delivery:

            (i) When personally delivered to the recipient, notice is effective
on delivery. Delivery to the person apparently designated to receive deliveries
at the subject address is personally delivered if made during business hours
(e.g. receptionist).

            (ii) When mailed by certified mail with return receipt requested,
notice is effective on receipt if delivery is confirmed by a return receipt.

            (iii) When delivery by overnight delivery Federal
Express/Airborne/United Parcel Service/DHL WorldWide Express with charges
prepaid or charged to the sender's account, notice is effective on delivery if
delivery is confirmed by the delivery service.

      (c) Refused, Unclaimed or Undeliverable Notices. Any correctly addressed
notice that is refused, unclaimed, or undeliverable because of an act or
omission of the party to be notified shall be considered to be effective as of
the first date that the notice was refused, unclaimed, or considered
undeliverable by the postal authorities, messenger, or overnight delivery
service.

      Section 17.07. Waivers. No waiver of any provision hereof shall be deemed
a waiver of any other provision hereof or of any subsequent breach of the same
or any other provisions. Any consent to, or approval of, any act shall not be
deemed to render unnecessary the obtaining of consent to or approval of any
subsequent act. The acceptance of rent hereunder by Lessor shall not be a waiver
of any preceding breach by Lessee of any provision hereof, other than the
failure of Lessee to pay the particular rent so accepted, regardless of Lessor's
knowledge of such preceding breach at the time of acceptance of such rent.

      Section 17.08. Recording. Either Lessor or Lessee shall, upon request of
the other, execute, acknowledge and deliver to the other a "short form"
memorandum of this Lease for recording purposes, provided that Lessee shall also
simultaneously execute in recordable form and deliver to Lessor a Quit Claim
Deed as to its leasehold and any other interest in the Premises and hereby
authorizes Lessor to date and record the same only upon the expiration or sooner
termination of this Lease.


                                       30


      Section 17.09. Surrender of Possession; Holding Over.

      (a) At the expiration of the Lease, Lessee agrees to deliver up and
surrender to Lessor possession of the Premises and all improvements thereon
broom clean and, in as good order and condition as when possession was taken by
Lessee, excepting only ordinary wear and tear (wear and tear which could have
been avoided by first class maintenance practices and in accordance with
industry standards shall not be deemed "ordinary"). Upon expiration or sooner
termination of this Lease, Lessor may reenter the Premises and remove all
persons and property therefrom. If Lessee shall fail to remove any personal
property which it is entitled or obligated to remove from the Premises upon the
expiration or sooner termination of this Lease, for any cause whatsoever,
Lessor, at its option, may remove the same and store or dispose of them, and
Lessee agrees to pay to Lessor on demand any and all expenses incurred in such
removal and in making the Premises free from all dirt, litter, debris and
obstruction, including all storage and insurance charges. If the Premises are
not surrendered at the end of the Lease Term, Lessee shall indemnify Lessor
against loss or liability resulting from delay by Lessee in so surrendering the
Premises, including, without limitation, actual damages for lost rent and with
respect to any claims of a successor occupant.

      (b) If Lessee, with Lessor's prior written consent, remains in possession
of the Premises after expiration of the Lease Term and if Lessor and Lessee have
not executed an express written agreement as to such holding over, then such
occupancy shall be a tenancy from month to month at a monthly Base Rent
equivalent to 125% (for the first three months of holdover) and thereafter 150%
of the monthly rental in effect immediately prior to such expiration, such
payments to be made as herein provided for Base Rent. In the event of such
holding over, all of the terms of this Lease, including the payment of
Additional Rent all charges owing hereunder other than rent shall remain in
force and effect on said month to month basis.

      Section 17.10. Cumulative Remedies. No remedy or election hereunder by
Lessor shall be deemed exclusive but shall, wherever possible, be cumulative
with all other remedies at law or in equity, provided that notice and cure
periods set forth in Article XII are intended to extend and modify statutory
notice provisions to the extent expressly stated in Section 12.01.

      Section 17.11. Covenants and Conditions. Each provision of this Lease to
be observed or performed by Lessee shall be deemed both a covenant and a
condition.

      Section 17.12. Binding Effect; Choice of Law. Subject to any provisions
hereof restricting assignment or subletting by Lessee and subject to the
provisions of Article XVI, this Lease shall bind the parties, their personal
representatives, successors and assigns. This Lease shall be governed by the
laws of the State of California and any legal or equitable action or proceeding
brought with respect to the Lease or the Premises shall be brought in Santa
Clara County, California.

      Section 17.13. Lease to be Subordinate. Lessee agrees that this Lease is
and shall be, at all times, subject and subordinate to the lien of any mortgage
or other encumbrances which Lessor may create during the Lease Term against the
Premises including all renewals, replacements and extensions thereof provided,
however, that regardless of any default under any


                                       31


such mortgage or encumbrance or any sale of the Premises under such mortgage, so
long as Lessee timely performs all covenants and conditions of this Lease and
continues to make all timely payments hereunder, this Lease and Lessee's
possession and rights hereunder shall not be disturbed by the mortgagee or
anyone claiming under or through such mortgagee. Lessee shall execute any
documents subordinating this Lease within ten (10) days after delivery of same
by Lessor so long as the Lender agrees therein that this Lease will not be
terminated if Lessee is not in default following a foreclosure, including,
without limitation, any Subordination Non-Disturbance and Attornment Agreement
("SNDA") which is substantially in the form attached hereto as Exhibit "F."
Lessor shall also utilize its commercially reasonable efforts to obtain a
non-disturbance agreement from any existing lender.

      Section 17.14. Attorneys' Fees. If either party herein brings an action to
enforce the terms hereof or to declare rights hereunder, the prevailing party in
any such action, on trial or appeal, shall be entitled to recover its reasonable
attorneys' fees, expert witness fees and costs as fixed by the Court.

      Section 17.15. Signs. Lessee shall not place any sign upon the exterior of
any Building without Lessor's prior written consent, which consent shall not be
unreasonably withheld and which consent is hereby given to the signage described
in Exhibit "G" hereto. Lessee, at its sole cost and expense, after obtaining
Lessor's prior written consent, shall install, maintain and remove prior to
expiration of this Lease (or within ten (10) days after any earlier termination
of this Lease) all signage in full compliance with (i) all applicable law,
statutes, ordinances and regulations and (ii) all provisions of this Lease
concerning Alterations.

      Section 17.16. Merger. The voluntary or other surrender of this Lease by
Lessee, or a mutual cancellation thereof, or a termination by Lessor, shall not
work a merger, and shall, at the option of Lessor, terminate all or any existing
subtenancies or may, at the option of Lessor, operate as an assignment to Lessor
of any or all of such subtenancies.

      Section 17.17. Guarantor.  [Intentionally Omitted] [Exhibit H]

      Section 17.18. Quiet Possession. Upon Lessee timely paying the rent for
the Premises and timely observing and performing all of the covenants,
conditions and provisions on Lessee's part to be observed and performed
hereunder, Lessee shall have quiet possession of the Premises for the entire
Lease Term, subject to all of the provisions of this Lease.

      Section 17.19. Easements. Lessor reserves to itself the right, from
time-to-time, to grant such easements, rights and dedications that Lessor deems
necessary or desirable, and to cause the recordation of Parcel Maps and
restrictions, so long as such easements, rights, dedications, Maps and
restrictions do not unreasonably interfere with the use of the Premises by
Lessee. Lessee shall sign any of the aforementioned or other documents, and take
such other actions, which are reasonably necessary or appropriate to accomplish
such granting and recordation, upon request of Lessor, and failure to do so
within ten (10) business days of a written request to do so shall constitute a
material breach of this Lease.


                                       32


      Section 17.20. Authority. Each individual executing this Lease on behalf
of a corporation, limited liability company or partnership represents and
warrants that he or she is duly authorized to execute and deliver this Lease on
behalf of such entity in accordance with a duly adopted resolution of the
governing group of the entity empowered to grant such authority, and that this
Lease is binding upon said entity in accordance with its terms. Each party shall
provide the other with a certified copy of its resolution within ten (10) days
after execution hereof, but failure to do so shall in no manner (i) be evidence
of the absence of authority or (ii) affect the representation or warranty. It is
understood that this Lease shall not be binding on Lessor unless and until
Lessor shall have executed same and delivered a fully executed copy of this to
Lessee.

      Section 17.21. Force Majeure Delays. In any case where either party hereto
is required to do any act (other than the payment of money), delays caused by or
resulting from Acts of God or Nature, war, civil commotion, fire, flood or other
casualty, labor difficulties, shortages of labor or materials or equipment,
unplanned delays in governmental permitting or approval process, government
regulations, unusually severe weather, or other causes beyond such party's
reasonable control the time during which act shall be completed, shall be deemed
to be extended by the period of such delay, whether such time be designated by a
fixed date, a fixed time or "a reasonable time."

      Section 17.22. Hazardous Materials.

      (a) Definition of Hazardous Materials and Environmental Laws. "Hazardous
Materials" means any (a) substance, product, waste or other material of any
nature whatsoever which is or becomes listed regulated or addressed pursuant to
the Comprehensive Environmental Response, Compensation and Liability Act, 42
U.S.C. sections 9601, et seq. ("CERCLA"); the Hazardous Materials Transportation
Act ("HMTA") 49 U.S.C. section 1801, et seq., the Resource Conservation and
Recovery Act, 42 U.S.C. section 6901, et seq. ("RCRA"); the Toxic Substances
Control Act, 15 U.S.C. sections 2601, et seq. ("TSCA"); the Clean Water Act, 33
U.S.C. sections 1251, et seq.; the California Hazardous Waste Control Act,
Health and Safety Code sections 25100, et seq.; the California Hazardous
Substances Account Act, Health and Safety Code sections 26300, et seq.; the
California Safe Drinking Water and Toxic Enforcement Act, Health and Safety Code
sections 25249.5, et seq.; California Health and Safety Code sections 25280, et
seq.; (Underground Storage of Hazardous Substances); the California Hazardous
Waste Management Act, Health and Safety Code sections 25170.1, et seq.;
California Health and Safety Code sections 25501. et seq. (Hazardous Materials
Response Plans and Inventory); or the Porter-Cologne Water Quality Control Act,
California Water Code sections 13000, et seq., all as amended, or any other
federal, state or local statute, law, ordinance, resolution, code, rule,
regulation, order or decree regulating, relating to or imposing liability
(including, but not limited to, response, removal and remediation costs) or
standards of conduct or performance concerning any hazardous, toxic or dangerous
waste, substance or material, as now or at any time hereafter may be in effect
(collectively, "Environmental Laws"); (b) any substance, product, waste or other
material of any nature whatsoever whose presence in and of itself may give rise
to liability under any of the above statutes or under any statutory or common
law theory based on negligence, trespass, intentional tort, nuisance, strict or
absolute liability or under any reported decisions of a state or federal court,
(c) petroleum or crude oil, including but


                                       33


not limited to petroleum and petroleum products contained within regularly
operated motor vehicles and (d) asbestos.

      (b) Lessor's Representations and Disclosures. Lessor represents that it
has provided Lessee with a description of the Hazardous Materials on or beneath
the Property as of the date hereof, attached hereto as Exhibit I and
incorporated herein by reference. Lessee acknowledges that in providing the
attached Exhibit I, Lessor has satisfied its obligations of disclosure pursuant
to California Health & Safety Code Section 25359.7 which requires:

      "Any owner of nonresidential real property who knows, or has reasonable
cause to believe, that any release of hazardous substances has come to be
located on or beneath that real property shall, prior to the sale, lease or
rental of the real property by that owner, give written notice of that condition
to the buyer, lessee or renter of the real property."

      (c) Use of Hazardous Materials. Lessee shall not cause or permit any
Hazardous Materials to be brought upon, kept or used in, on or about the
Property by Lessee, its agents, employees, contractors, licensee, guests,
visitors or invitees without the prior written consent of Lessor. Lessor shall
not unreasonably withhold such consent so long as Lessee demonstrates to
Lessor's reasonable satisfaction that such Hazardous Materials are necessary or
useful to Lessee's business and will be used, kept and stored in a manner that
complies with all applicable Environmental Laws. Lessee shall, at all times,
use, keep, store, handle, transport, treat or dispose all such Hazardous
Materials in or about the Property in compliance with all applicable
Environmental Laws. Lessee shall remove all Hazardous Materials used or brought
onto the Property during the Lease Term from the Property prior to the
expiration or earlier termination of the lease.

      (d) Use of Property. Lessee shall not use the Property in any manner that
could cause or contribute to the migration or release of any existing
contamination and shall not interfere with response actions taken on or around
the Property.

      (e) Lessee's and Lessor's Environmental Indemnity. Lessee agrees to
indemnify and hold Lessor harmless from any liabilities, losses, claims,
damages, penalties, fines, attorney fees, expert fees, court costs, remediation
costs, investigation costs, or other expenses resulting from or arising out of
the use, storage, treatment, transportation, release, presence, generation, or
disposal of Hazardous Materials on, from or about the Property, and/or
subsurface or ground water, after the Commencement Date from an act or omission
of Lessee (or Lessee's successor), its agents, employees, invitees, vendors,
contractors, guests or visitors. Lessor agrees to indemnify and hold Lessee
harmless from any liabilities, losses, claims, damages, penalties, fines,
attorney fees, expert fees, court costs, remediation costs, investigation costs,
or other expenses resulting from or arising out of the use, storage, treatment,
transportation, release, presence, generation, or disposal of Hazardous
Materials on, from or about the Property, and/or subsurface or ground water,
prior to the Commencement Date from an act or omission of Lessor (or Lessor's
predecessor), its agents, employees, invitees, vendors, contractors, guests or
visitors.


                                       34


      (f) Lessee's Obligation to Promptly Remediate. If the presence of
Hazardous Materials on the Premises after the Commencement Date results from an
act or omission of Lessee (or Lessee's successors), its agents, employees,
invitees, vendors, contractors, guests, or visitors results in contamination or
deterioration of the Property or any water or soil beneath the Property, Lessee
shall promptly take all action necessary or appropriate to investigate and
remedy that contamination, at its sole cost and expense, provided that Lessor's
approval of such action shall first be obtained. Lessor's approval shall not be
unreasonably withheld.

      (g) Notification. Lessor and Lessee each agree to promptly notify the
other of any communication received from any governmental entity concerning
Hazardous Materials or the violation of Environmental Laws that relate to the
Property.

      Section 17.23. Modifications Required by Lessor's Lender. If any lender of
Lessor requires a modification of this Lease that will not increase Lessee's
cost or expense or materially and adversely change Lessee's rights and
obligations, this Lease shall be so modified and Lessee shall execute whatever
documents are required by such lender and deliver them to Lessor within ten (10)
days after the request.

      Section 17.24. Brokers. Lessor and Lessee each represents to the other
that it has had no dealings with any real estate broker or agent in connection
with the negotiation of this Lease, except for the real estate brokers or agents
identified on the signature page hereof ("Brokers") and that they know of no
other real estate broker or agent who is entitled to a commission or finder's
fee in connection with this Lease. Each party shall indemnify, protect, defend,
and hold harmless the other party against all claims, demands, losses,
liabilities, lawsuits, judgments, and costs and expenses (including reasonable
attorney fees) for any leasing commission, finder's fee, or equivalent
compensation alleged to be owning on account of the indemnifying party's
dealings with any real estate broker or agent other than the Brokers. The terms
of this Section 17.24 shall survive the expiration or earlier termination of the
Lease Term.

      Section 17.25. Right of First Offer to Lease Adjacent Project.

      (a) If Lessor enters into a Purchase and Sale Agreement to purchase
certain real property which is adjacent to the Project and which is depicted on
Exhibit "N" hereto and on which Lessor desires to develop an additional
office/research and development project "Adjacent Project," Lessee shall have a
right of first offer ("Right of First Offer") to lease the Adjacent Project
subject to paragraphs (b) through (g) below.

      (b) This Section 17.25 shall automatically and permanently become null and
void if at the time Lessor enters into the aforesaid Purchase and Sale Agreement
or at the time Lessee exercises the Right of First Offer: (i) this Lease is not
in full force and effect, (ii) Lessee is in default beyond any expressly notice
and cure period provided under this Lease, and (iii) Lessee's then current
financial condition, as revealed by its most recent financial statements (which
shall include quarterly and annual financial statements, including income
statements, balance sheets, and cash flow statements), fail to demonstrate that
either: (1) Lessee's net worth is at least equal to its net worth at the time
this Lease was signed; or (2) Lessee meets other financial criteria acceptable
to Lessor in its sole discretion.


                                       35


      (c) If Lessee is not in default beyond any express notice and cure period
provided under this Lease when Lessor enters into said Purchase and Sale
Agreement or at the time Lessee exercises its Right of First Offer, Lessor shall
not lease the Adjacent Project to another lessee unless and until Lessor has
first offered it to Lessee in writing (the "Offer Notice") and either (i) Lessee
rejects such offer or (ii) a period of five (5) business days has elapsed from
the date that Lessor has delivered the Offer Notice to Lessee, without Lessee
having notified Lessor in writing of its acceptance of such Offer Notice,
delivered a signed Lease and supplied Lessor with current financial statements
pursuant to Section 17.25 (b), whichever event occurs first. The Offer Notice
shall contain the following information: (a) a general description of the number
of buildings to be built and the approximate rentable square feet of each, (b)
the date on which the Lessor expects the lease term to commence, (c) the base
rent. There shall be attached to the Offer Notice a form of written Lease
containing such other terms and conditions upon which Lessor wishes to lease the
Adjacent Project.

      (d) If Lessee timely delivers to Lessor, in accordance with the conditions
of this Section 17.25, written notice of Lessee's acceptance of the Offer Notice
together with a signed Lease (without modification of any kind) and Lessee's
financial statements and Lessor determines pursuant to Section 17.25(b) that
Lessee meets all of the conditions provided in this Section 17.25, then Lessee
shall be deemed to have duly exercised its right hereunder and Lessor shall
execute the Lease.

      (e) If Lessee declines or fails to duly and timely accept the Offer Notice
and to return same with the signed Lease and financial statements as provided in
Section 17.25(d), or fails to meet all of the conditions provided in Section
17.25(b), this Section 17.25 shall automatically become null and void and have
no further force and effect and Lessor shall thereafter be free to lease the
Adjacent Project in portions or in its entirety to any tenant at any time
without regard to the restrictions in this Section 17.25 and on whatever terms
and conditions Lessor may decide in its sole discretion, without again complying
with all the provisions of this Section 17.25.

      (f) This Right of First Offer is personal to the Lessee signing this Lease
and shall become null and void upon the occurrence of an assignment of the Lease
or a sublet of all or more than fifty percent (50%) of the Rentable Area of the
Premises for the remainder of the Lease Term other than to an Affiliate of said
Lessee.

      (g) This Right of First Offer shall become null and void upon the
occurrence of any transfer of title to the Premises or Project by Lessor,
including without limitation, by foreclosure or otherwise.

      Section 17.26. Right of First Offer to Purchase Premises. Should Lessor
determine at any time during the Lease Term that it intends to sell the
Premises, and Lessee is not then in default beyond any express notice and cure
period provided under this Lease, it shall notify Lessee of the terms and
conditions on which it wishes to sell in the form of a Purchase and Sale
Agreement which shall have terms and conditions sufficient to constitute a
binding contract (once signed by both parties) to accomplish the purchase and
sale and which terms and conditions shall otherwise be in the sole discretion of
Lessor. If Lessee does not sign and hand-


                                       36


deliver the signed Purchase and Sale Agreement to Lessor (without modification
of any kind) within five (5) business days after Lessor delivers same to Lessee,
or if Lessee fails to provide with said signed Purchase and Sale Agreement
financial statements demonstrating that Lessee's net worth is at least equal to
its net worth at the time this Lease is executed, or if Lessee fails to timely
perform all of its obligations under the Purchase and Sale Agreement or the
escrow established thereunder is terminated for any reason, this Section 17.26
shall automatically become null and void and have no further force and effect
and Lessor shall thereafter be free to sell the Premises or Project in portions
or in its entirety to any buyer at any time without regard to the restrictions
in this Section 17.26 and on whatever terms and conditions Lessor may decide in
its sole discretion, without again complying with any of the provisions of this
Section 17.26. This Right of First Offer is personal to the Lessee signing this
Lease and shall become null and void upon the occurrence of an assignment of the
Lease or a sublet of all or more than fifty percent (50%) of the Premises for
the remainder of the Lease Term other than to an Affiliate of said Lessee. This
Right of First Offer shall become null and void upon the occurrence of any
transfer of title to the Premises or Project by Lessor, including without
limitation, by foreclosure or otherwise. This Right of First Offer shall be
subordinate to the lien of any deed of trust recorded against the Project or
Premises at any time. This Right of First Offer shall not apply with respect to
any transfer of title or other interest in the Project or Premises to an entity
which is an "Affiliate" of Lessor (as that Lessor is used herein Section 11.02
to describe entity relationships of Lessee) or to Lehman Brothers or any entity
related to Lehman Brothers.

      Section 17.27 List of Exhibits.
                                                                  Ref. Page

EXHIBIT A:  Real Property Legal Description,
                  Site Plan, and Building Elevations

EXHIBIT B:  Plans and Specifications for Shell Buildings

EXHIBIT C:  Work Letter Agreement for Tenant.
                  Improvements and Interior Specification Standards

EXHIBIT D:  Cost Responsibilities of Lessor and Lessee

EXHIBIT E:  Memorandum of Commencement of Lease
                  Term and Schedule of Base Rent
EXHIBIT F:  SNDA

EXHIBIT G:  Signage Exhibit

EXHIBIT H:  Guaranty of Lease [Intentionally Omitted]

EXHIBIT I:  Hazardous Materials Disclosure


                                       37


EXHIBIT J:  [Intentionally omitted]

EXHIBIT K:  [Intentionally omitted]

EXHIBIT L:  Rules and Regulations

EXHIBIT M:  Moffett Park TDM Plan

EXHIBIT N:  Adjacent Project



                                       38


LESSOR AND LESSEE EACH HAS CAREFULLY READ AND HAS REVIEWED THIS LEASE AND BEEN
ADVISED BY LEGAL COUNSEL OF ITS OWN CHOOSING AS TO EACH TERM AND PROVISION
CONTAINED HEREIN AND, BY EXECUTION OF THIS LEASE, SHOWS ITS INFORMED AND
VOLUNTARY CONSENT THERETO. EACH PARTY HEREBY AGREE THAT, AT THE TIME THIS LEASE
IS EXECUTED, THE TERMS AND CONDITIONS OF THIS LEASE ARE COMMERCIALLY REASONABLE
AND EFFECTUATE THE INTENT AND PURPOSE OF LESSOR AND LESSEE WITH RESPECT TO THE
PREMISES.

      Executed at San Jose, California, as of the reference date.

LESSOR:                                   ADDRESS:

MOFFET PARK DRIVE LLC,                    c/o Jay Paul Company
a California limited liability            353 Sacramento Street, Suite 1740 
company                                   San Francisco, California 94111   
                                          
By:  GATEWAY LAND COMPANY, INC.
     A California corporation,
     Managing Member                       With a copy to:

By:___________________________            Thomas G. Perkins, Esq.
      Jay Paul, President                 99 Almaden Blvd., 8th Floor
                                          San Jose, CA 95113
                                          Telephone: 408/993-9911
                                          Facsimile: 408-286.3312

LESSEE:                                   ADDRESS:

ARIBA, INC.
a Delaware corporation                    
                                          1565 Charleston Road
                                          Mountain View, CA 94041
By: /s/ Edward P. Kinsey                  ATTN: Chief Financial Officer
    -----------------------------------   
   Edward P. Kinsey                       1111 Lockheed Martin Way 
   (Type or print name)                   Sunnyvale, CA 94089      
                                          
Its: Edward P. Kinsey                     
     ----------------------------------
   Vice President- Finance
   Chief Financial Officer                (After Commencement Date)
                                          Copies to:
                                          Ariba - Real Estate Dept. and
                                          Ariba - Legal Dept.
                                          1111 Lockheed Martin Way
                                          Sunnyvale, CA 94089



                                       39


                                BROKER EXECUTION

      By signing below, the indicated real estate broker or agent is not being
made a party hereto but is signifying its agreement with the provisions hereof
concerning brokerage.

LESSOR's BROKER:                       ADDRESS:

Cornish & Carey Commercial             2804 Mission College Boulevard
                                       Suite 120
                                       Santa Clara, California 95054
By:
   ---------------------------
      Phil Mahoney
      (Type or print name)
Its: Executive Vice President
    -------------------------

LESSEE's BROKER:                       ADDRESS:

Cushman & Wakefield                    2055 Gateway Place, Suite 550
                                       San Jose, California 95110
By:
   ---------------------------
      John McMann
      (Type or print name)
Its: Associate Director

                                       40


                                    EXHIBIT A
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin, Way
                              Sunnyvale, California

                        REAL PROPERTY LEGAL DESCRIPTION,
                        SITE PLAN AND BUILDING ELEVATIONS

                                 (See Attached)



                                  [Moffett Park
                                  Sunnyvale, California]

                                       [site plan]


Lockheed Way Elevation

Moffett park drive Elevation
                                                                 [Moffett Park
                                                        Sunnyvale, California]



                                                              Order No. 617852
                                                                    Page No. 7

                                LEGAL DESCRIPTION

REAL PROPERTY in the City of Sunnyvale, County of Santa Clara, State of
California, described as follows: 

PARCEL ONE:

Commencing at the point of intersection of the Westerly line of that certain
parcel of land conveyed to Lockheed Aircraft Corporation, by Deed recorded
February 1, 1956 in Book 3403, at page 27, Official Records of Santa Clara
County, with the Northerly line of the existing State Highway in Santa Clara
County, Road IV-SC1-88-B (Bayshore Highway); thence along said Westerly line,
North 15(degrees) 22' 44" East 811.7 feet to the true point of beginning of the
parcel to be described; thence from said true point of beginning, leaving said
line and going along the line of lands to be acquired by the Division of
Highways, South 5(degrees) 45' 46" West 230.86 feet; thence along a curve to the
left with a radius of 284.00 feet, through a central angle of 1(degree) 16' 18",
an arc distance of 55.87 feet to a point of compound curvature; thence along the
arc of a curve to the left with a radius of 41.00 feet, through a central angle
of 63(degrees) 58' 31", an arc distance of 45.78 feet; thence South 69(degrees)
29' 03" East 185.61 feet; thence on the arc of a curve, to the left with a
radius of 410.00 feet (the tangent to said curve at the point of beginning bears
South 60(degrees) 69' 31" East), through a central angle of 20(degrees) 55' 04",
an arc distance of 149.68 feet; thence North 78(degrees) 05' 25" East 269.53
feet; thence on the arc of a curve to the left with a radius of 1924.00 feet,
through a central angle of 5(degrees) 24' 34", an arc distance of 181.65 feet;
thence North 72(degrees) 40' 51" East 601.58 feet; thence on the arc of a curve
to the left with radius of 960.00 feet, through a central angle of 6(degrees) 
52' 02", an arc distance of 115.06 feet; thence continuing along said line to be
conveyed to the Division of Highways, North 65(degrees) 48' 49" East 146.38 feet
to a point in the Easterly line of said parcel, said point bears North
14(degrees) 52' 20" East 359.40 feet from the center line of the existing State
Highway in Santa Clara County, Road 4-SC1-113-A; thence along said Easterly line
of said parcel, North 14(degrees) 52' 20" East 454.56 feet to the Southeasterly
corner of that certain 82.703 acre tract shown on Record of Survey of a portion
of Lot 5A of the Murphy Partition of the Rancho Pastoria De Las Borregas, filed
for record February 7, 1957 in Book 78 of Maps, at page 32, Santa Clara County
Records; thence along the Southwesterly line of said 82.703 acre parcel, North
75(degrees) 07' 40" West (called North 76(degrees) 08' West on said Record of
Survey), 1520.01 feet to the Westerly line of that certain tract of land
hereinabove referred to, a description of which was recorded in Book 3403, at
page 27, Official Records of Santa Clara County; thence along the Westerly line
of said tract, South 15(degrees) 22' 44" West 860.31 feet to the true point of
beginning.

EXCEPTING THEREFROM that portion thereof described in the deed to the United
States of America, recorded September 18, 1968 in Book 8265, page 381, Official
Records, and more particularly described as follows:

Beginning at the intersection of the Northerly line of the lands conveyed to the
State of California and recorded in Book 4035 of Official Records, at page 591,
in the Office of the County Recorder of the County of Santa Clara, State of
California with the Easterly line of Lot 5A of the "Partition of that part of
the Rancho Pastoria De Las Borregas patented to Martin Murphy, Jr." and recorded
in volume G of Maps, at pages 74 and 76 in the Office of the County Recorder,
County of Santa Clara, State of California; thence along the Northerly line of
the lands conveyed to the State of California, South 65(degrees) 49' 50" West
147.52 feet; thence along the arc of a tangent curve to the right, having a
radius of 960.00 feet, through a central angle of 6(degrees) 52' 02", a distance
of 115.06 feet; thence South 72(degrees) 41' 52" West 133.33 feet; thence 
leaving said Northerly line, North 14(degrees) 52' 20" East 636.00 feet; thence 
South 75(degrees) 07' 40" East 320.92 feet to a point on the Easterly line of 
the above mentioned Lot 5A; thence along said Easterly line of Lot 5A, South 
14(degrees) 52' 20" West 455.22 feet to the point of beginning.

(LEGAL DESCRIPTION CONTINUED NEXT PAGE)


                                                               Order No. 517852
                                                                     Page No. 8

LEGAL DESCRIPTION: (Continued)

ALSO EXCEPTING THEREFROM that portion thereof described as "PARCEL 2101-A" in
the deed to the Santa Clara County Transit District recorded September 26, 1997,
Document No. 13874485, Official Records, and more particularly described as
follows:

Beginning at the Southerly terminus of the Easterly line of that certain 27.765
acre parcel as said parcel is shown on that certain Record of Survey filed in
Book 283 of Maps, page 10; Records of Santa Clara County, California; thence
Northerly along said Easterly line of said 27.755 acre parcel, the following two
(2) described courses: 1) North 15(degrees) 45' 47" East 0.73 feet to the true
point of beginning of this description; 2) continuing North 15(degrees) 45' 47"
East 45.87 feet to the beginning of a nontangent curve concave Northerly with a
radius of 2739.00 feet; thence leaving said Easterly line of said 27.755 acre
parcel from a tangent bearing of South 74(degrees) 51' 31" West along said curve
(with a radius of 2739.00 feet) through a central angle of 12(degrees) 37' 47"
and an arc length of 603.76 feet to the beginning of a compound curve concave
Northerly with a radius of 3655.70 feet; thence Westerly along the last said
curve (with a radius of 3655.70 feet) through a central angle of 1(degree) 33'
45" and an arc length of 99.70 feet; thence South 89(degrees) 03' 03" West
552.58 feet to the Westerly line of said 27.755 acre parcel and to Point "A";
thence Southerly along said Westerly line of said 27.755 acre parcel, the
following two (2) described courses: 1) South 6(degrees) 41' 08" West 10.31 feet
to the beginning of a curve concave Easterly with a radius of 284.00 feet) 2)
Southerly along the last said curve (with a radius of 284.00 feet) through a
central angle of 5(degrees) 49' 42" and an arc length of 28.89 feet; thence
leaving said Westerly line of said 27.755 acre parcel North 89(degrees) 03' 03"
East 597.76 feet to the beginning of a curve concave Northerly (with a radius of
2647.00 feet); thence Easterly along the last said curve (with a radius of
2647.00 feet) through a central angle of 14(degrees) 02' 05" and an arc length
of 648.39 feet to the true point of beginning.

ALSO EXCEPTING THEREFROM that portion thereof described in the deed to The City
of Sunnyvale recorded December 23, 1998, Document No. 14567148, Official Records
and more particularly described as follows:

Beginning at the most Southeasterly corner of said 27.755 acre parcel of land,
as said parcel is shown on that certain Record of Survey filed in Book 263 of
Maps, page 10, Records of Santa Clara County, California, said corner also being
on the Northerly right-of-way line of the lands described in the Deed to the
State of California, recorded on March 21, 1958 in Book 4035 of Official
Records, page 591, Records of Santa Clara County; thence along the Southerly
line of said 27.755 acre parcel of land, and along said Northerly right-of-way
line, the following seven (7) courses: 1) South 72(degrees) 40' 61" West 467.92
feet to the beginning of a curve to the right having a radius of 1924.00 feet;
2) along said curve through a central angle of 05(degrees) 24' 34" for an arc
length of 181.65 feet; 3) South 78(degrees) 05' 25" West 269.53 feet to the
beginning of a curve to the right having a radius of 410.00 feet; 4) along said
curve through a central angle of 20(degrees) 55' 04" for an arc length of 149.68
feet; 5) North 69(degrees) 29' 03" West 185.61 feet to the beginning of a curve
to the right having a radius of 41.00 feet; 6) along said curve through a
central angle of 63(degrees) 68' 31" for an arc length of 45.78 feet to the
beginning of a curve to the right having a radius of 284,00 feet; 7) along said
curve through a central angle of 05(degrees) 27' 01" for an arc length of 27.02
feet; thence leaving last said lines along the Southerly proposed acquisition
line for the area designated as 2101-A, as shown on the Santa Clara County
Transportation Agency Tasman Corridor Project Appraisal Map, dated March 22,
1998, the following two (2) courses: 1) North 88(degrees) 09' 49" East 597.97
feet to the beginning of a curve to the left, having a radius of 2647.00 feet;
2) along said curve, through a central angle of 14(degrees) 02' 05" for an arc
length of 648.39 feet to a point on the Easterly line of said 27.755 acre parcel
of land; thence along said Easterly line South 14(degrees) 52' 20" West 0.72
feet to the point of beginning of this description.

(LEGAL DESCRIPTION CONTINUED NEXT PAGE)



                                                               Order No. 517852
                                                                     Page No. 9

LEGAL DESCRIPTION: (Continued)

PARCEL TWO:

All that certain real property, being a portion of that certain Relinquishment
from the State of California to the City of Sunnyvale (Request 40500) recorded
as Segment 1 in Document 14249920 in the Official Records of Santa Clara County,
California, and being more particularly described as follows:

Beginning at the most Northerly point of Parcel 1, as said Parcel 1 is described
in that certain Relinquishment No. 22171 as said Relinquishment is recorded in
Book 6174, pages 121-125, Official Records of Santa Clara County, California,
said point being on the Westerly line of said Segment 1 of said Relinquishment
to the City of Sunnyvale; thence Southerly along the generally Easterly line of
said Parcel 1 (generally Westerly line of said Segment 1) the following seven
(7) courses: 1) South 15(degrees) 18' 06" West 106.20 feet; 2) North 73(degrees)
43' 54" West 18.26 feet to the beginning of a nontangent curve concave Southerly
with a radius of 19.00 feet; 3) from a tangent bearing of North 63(degrees) 58'
29" West along said curve (with a radius of 19.00 feet) through a central angle
of 67(degrees) 23' 17" and an arc length of 22.35 feet to the beginning of a
compound curve concave Southeasterly with a radius of 74.00 feet; 4)
Southwesterly along the last said curve (with a radius of 74.00 feet) through a
central angle of 50(degrees) 48' 34" and an arc length of 65.62 feet; 5) South
2(degrees) 10' 20" East 150.75 feet to the beginning of a curve concave Westerly
with a radius of 118.00 feet; 6) Southerly along the last said curve (with a
radius of 118.00 feet) through a central angle of 18(degrees) 26' 26" and an arc
length of 37.98 feet; 7) South 16(degrees) 16' 06" West 316.73 feet; thence
leaving said generally Easterly line of Parcel 1 (generally Westerly line of
Segment 1) North 89(degrees) 03' 03" East 74.12 feet to the Westerly line of
that certain 27.755 acre parcel of land shown on that certain Record of Survey
filed in Book 263 of Maps, page 10, Records of Santa Clara County and to the
Easterly line of said Segment 1 of said Relinquishment to the City of Sunnyvale;
thence Northerly along said Westerly line of said 27.755 acre parcel (Easterly
line of Segment 1) the following two (2) described courses: 1) North 6(degrees)
41' 08" East 133.77 feet; 2) North 16(degrees) 16' 11" East 683.38 feet; thence
leaving said Westerly line of said 27.755 acre parcel (Easterly line of Segment
1) Westerly along the Northerly line of said Segment 1, North 73(degrees) 43'
49" West 40.00 feet to said generally Westerly line of Segment 1; thence
Southerly along said generally Westerly line of Segment 1 South 22(degrees) 16'
03" West 163.27 feet to the point of beginning.

PARCEL THREE:

All of that certain property being a portion of the Lands of the Santa Clara
Valley Transportation Authority, being more particularly described as follows:

Beginning at the most Northerly point of Parcel 1, as said Parcel 1 is described
in that certain Relinquishment No. 22171 as said Relinquishment is recorded in
Book 6174, Pages 121-125, Official Records of Santa Clara County, California,
thence Southerly along the generally Easterly line of said Parcel 1 the
following seven (7) described courses: 1) South 16(degrees) 16' 06" West 106.20
feet; 2) North 73(degrees) 43' 54" West 18.26 feet to the beginning of a
nontangent curve concave Southerly with a radius of 19.00 feet 3) from a tangent
bearing of North 63(degrees) 58' 29" West along said curve (with a radius of
19.00 feet) through a central angle of 67(degrees) 23' 17" and an arc length of
22.35 feet to the beginning of a compound curve concave Southeasterly with a
radius of 74.00 feet; 4) Southwesterly along the last said curve (with a radius
of 74.00 feet) through a central angle of 50(degrees) 48' 34" and an arc length
of 65.62 feet; 5) South 2(degrees) 10' 20" East 150.75 feet to the beginning of
a curve concave Westerly with a radius of 118.00 feet; 6) Southerly along the
last said curve (with a radius of 118.00 feet) through a central angle of
18(degrees) 26' 28" and an arc length of 37.98 feet; 7) South 16(degrees) 16'
06" West 376.41 feet; thence leaving said generally Easterly line of Parcel 1
South 89(degrees) 03' 03" West 48.38 feet to the

(LEGAL DESCRIPTION CONTINUED NEXT PAGE)



                                                               Order No. 517852
                                                                    Page No. 10

LEGAL DESCRIPTION: (Continued)

beginning of a nontangent curve concave Westerly with a radius of 92.00 feet and
to the generally Northerly (and Westerly) line of said Parcel 1; thence
Northerly along said generally Northerly (and Westerly) line of Parcel 1, the
following six (6) described courses: 1) from a tangent bearing of North
20(degrees) 11" 22" East along the last said curve (with a radius of 92.00 feet)
through a central angle of 3(degrees) 55' 16" and an arc length of 6.30 feet; 2)
North 16(degrees) 16' 06" East 384.44 feet to the beginning of a curve concave
Westerly with a radius of 72.00 feet; 3) Northerly along the last said curve
(with a radius of 72.00 feet) through a central angle of 18(degrees) 26' 26" and
an arc length of 23.17 feet; 4) North 2(degrees) 10' 20" West 185.68 feet to the
beginning of a curve concave Southeasterly with a radius of 90.00 feet; 5)
Northeasterly along the last said curve (with a radius of 90.00 feet) through a
central angle of 93(degrees) 51' 33" and an arc length of 147.43 feet to the
beginning of a reverse curve concave Northwesterly with a radius of 50.00 feet;
6) Northeasterly along the last said curve (with a radius of 50.00 feet) through
a central angle of 69(degrees) 58' 05" and an arc length of 61.05 feet to the
point of beginning.

PARCEL FOUR:

A non-exclusive easement 30 feet in width for the purpose of ingress and egress
and utilities, as reserved in the Deed to the United States of America, recorded
September 18, 1968 in Book 8265 of Official Records, page 381, more particularly
described as follows:

Commencing at the beginning of the Parcel Two described in said Deed; thence
along the Northerly Iine of the lands conveyed to the State of California, South
65(degrees) 49' 50" West 147.52 feet; thence along the arc of a tangent curve to
the right, having a radius of 960.00 feet, through a central angle of 6(degrees)
52' 02", a distance of 116.06 feet; thence South 72(degrees) 41' 52" West 97.89
feet to the true point of beginning of the reservation; thence from said true
point of beginning of the reservation, South 72(degrees) 41' 52" West 35.44
feet; thence leaving said Northerly line, North 14(degrees) 52' 20" East 686.09
feet; thence South 75(degrees) 07' 40" East 30.00 feet; thence South 14(degrees)
52' 20" West 667.22 feet to the true point of beginning of the reservation.

PARCEL FIVE:

Storm drain easements with the right of encroachment and access for operation,
maintenance and related functions, as reserved in the Deed to the United States
of America recorded September 18, 1968 in Book 8265 of Official Records, page
381, more particularly described as follows:

Storm Drain Easement No. 1

Commencing at the beginning of Parcel Two described in said Deed; thence along
the Northerly line of the lands conveyed to the State of California, South
63(degrees) 49' 50" West 147.52 feet; thence along the arc of a tangent curve to
the right having a radius of 960.00 feet, through a central angle of 6(degrees)
52' 02", a distance of 115.06 feet; thence South 72(degrees) 41' 52" West 133.33
feet; thence leaving said Northerly line, North 14(degrees) 52' 20" East 78.00
feet to the centerline of the 10-ft. wide storm drain easement which is the true
point of beginning of the reservation of Storm Drain Easement No. 1; thence from
true point of beginning of the reservation of Storm Drain Easement No. 1. South
62(degrees) 30' 00" East 50 feet, more or less, along the centerline of the
10-ft. wide easement to the 45-ft. wide drainage easement conveyed to the Santa
Clara County Flood Control and Water Conservation District and recorded in Book
4562 of Official Records, at page 11, in the Office of the County Recorder of
the County of Santa Clara, State of California.

(LEGAL DESCRIPTION CONTINUED NEXT PAGE)


                                                               Order No. 517852
                                                                    Page No. 11

LEGAL DESCRIPTION: (Continued)

Storm Drain Easement No. 2

Commencing at the beginning of Parcel Two described in said Deed; thence along
the Northerly line of the lands conveyed to the State of California, South
65(degrees) 49' 50" West 147.52 feet; thence along the arc of a tangent curve to
the right, having a radius of 960.00 feet, through a central angle of 6(degrees)
52' 02", a distance of 115.06 feet; thence South 72(degrees) 41' 52" West 133.33
feet; thence leaving said Northerly line, North 14(degrees) 52' 20" East 686.09
feet; thence South 75(degrees) 07' 40" East 40.00 feet to the true point of
beginning of the reservation of Storm Drain Easement No, 2; thence from said
true point of beginning of the reservation of Storm Drain Easement No. 2, South
14(degrees) 52' 20" West 35.00 feet; thence North 75(degrees) 07' 40" West 40.00
feet; thence North 14(degrees) 52' 20" East 15.00 feet; thence South 75(degrees)
07' 40" East 30.00 feet; thence North 14(degrees) 52' 20" East 20.00 feet;
thence South 75(degrees) 07' 40" East 10.00 feet to the true point of beginning
of the reservation of Storm Drain Easement No. 2.

PARCEL SIX:

Easements described in and according to the terms and provisions set forth in
the DECLARATION OF COVENANTS, CONDITIONS, AND RESTRICTIONS, AND RECIPROCAL
EASEMENTS (BAYSHORE/JAGELS/MANILA PARCELS) by Lockheed Martin Corporation
recorded November 9, 1999 as Instrument No. 15053464, Official Records.

APN: 110-02-067
ARB: 110-1-24; 110-2-x61, 64


                                    EXHIBIT B
                                       TO
                             MOFFETT PARK DRIVE LLC
                                    LEASE TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martino Way
                              Sunnyvale, California

                     SHELL BUILDING PLANS AND SPECIFICATIONS

                                (To be provided)




                            [EXHIBIT "B" ARIBA LEASE p. 1 of 4
                                    [FIRST FLOOR PLAN]



                               [EXHIBIT "B" ARIBA p. 2 of 4

                                   [SECOND FLOOR PLAN]



                            [EXHIBIT "B" ARIBA LEASE p. 3 of 4

                                    [THIRD FLOOR PLAN]



                                 [EXHIBIT "B" ARIBA LEASE

                                   [FOURTH FLOOR PLAN]




                                    EXHIBIT C
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                  WORK LETTER AGREEMENT FOR TENANT IMPROVEMENTS
                      AND INTERIOR SPECIFICATION STANDARDS

This agreement supplements the above referenced Lease executed concurrently
herewith and is as follows:

      1. Lessee shall devote such time as may be necessary to enable Lessor to
complete and obtain by the respective dates specified in Section 2.04(d) of the
Lease Lessee's written approval, and approval by appropriate government
authorities, of the final Working Drawings. The Working Drawings, as they may be
modified or provided herein, shall be prepared by Lessor in accordance with the
design specified by Lessee and reasonably approved by Lessor. Lessee shall be
responsible for the suitability, for Lessee's needs and business, of the design
and function of all Tenant Improvements. All improvements to be constructed by
Lessor as shown on the Working Drawings, standard or special, shall be defined
as "Tenant Improvements." All Tenant Improvements materials shall be of a
quality equal to or greater than the quality of materials described on the
Interior Specification Standards attached hereto as Schedule One.

      2. Lessor shall cause General Contractor to complete the construction of
the Tenant Improvements in a good and workmanlike manner and in substantial
accordance with the Working Drawings. Lessor shall not, however, be responsible
for procuring or installing in the Premises any trade fixtures, equipment,
furniture, furnishings, telephone equipment or other personal property
("Personal Property") to be used in the Premises by Lessee, and the cost of such
Personal Property shall be paid by Lessee. Lessee shall conform to all Project
standards in installing any Personal Property and shall be subject to any and
all rules of the site during construction.

3. Payment for the Tenant Improvements shall be pursuant to Section 2.04(g) of
the Lease.

      4. Lessee shall, by signing the Working Drawings within the time set forth
in Section 2.04 (d) of the Lease, give Lessor authorization to complete the
Tenant Improvements in accordance with such Working Drawings. If Lessee shall
request any change, addition or alteration in the approved Working Drawings,
Lessor shall promptly give Lessee a written




estimate of the cost of engineering and design services to prepare a change
order (the "Change Order") in accordance with such request and the time delay
expected because of such request. If Lessee, in writing, approves such written
estimate, Lessor shall have the Change Order prepared and Lessee shall
concurrently reimburse Lessor for the cost thereof. Promptly upon the completion
of such Change Order, Lessor shall notify Lessee in writing of the cost and
delay which will be chargeable to Lessee by reason of such change, addition or
deletion. Lessee shall within three (3) business days notify Lessor in writing
whether it desires to proceed with such change, addition or deletion, and in the
absence of such written authorization, the Change Order will be deemed canceled
and Lessee shall be chargeable with any delay in the completion of the Premises
resulting from the processing of such Change Order, including the three (3)
business day approval period.

      5. If the completion of the Tenant Improvements in the Premises is delayed
(i) at the request of Lessee, (ii) by Lessee's failure to comply with the
forgoing provisions and time frames set forth in Section 2:04(d), or (iii) by
changes in the work ordered by Lessee or by extra work ordered by Lessee, or
(iv) because Lessee chooses to have additional work performed by Lessor, then
Lessee shall be responsible for all costs and any expenses occasioned by such
delay including, without limitation, any costs and expenses attributable to
increases in labor or materials; and there shall be no delay in the commencement
of Lessee's obligation to pay Rent because of Lessor's failure to complete the
Tenant Improvements on time and any such delay in completion shall constitute
Lessee Delay for purposes of Section 3.01 (a) of the Lease.

      Each person executing this Work Letter Agreement certifies that he or she
is authorized to do so on behalf of and as the act of the entity indicated.
Executed as of March __, 2000, at ____________ (___________ County), California.

MOFFETT PARK DRIVE LLC,                     ARIBA INC.,
A California limited liability company      a Delaware corporation


By:                                         By: /s/ Edward Kinsey
   ---------------------------                 -----------------------------
       Jay Paul                                  Edward P. Kinsey
 Its:  Manager                                  (Type or print name)
                                               
                                            Its: Edward Kinsey
                                                ----------------------------
                                                  Vice President - Finance

                                            By:   Chief Financial Officer
                                                -----------------------------

                                                -----------------------------
                                            (Type or print name) 
                                            Its:
                                                 ----------------------------



                                  SCHEDULE ONE
                                       TO
                                    EXHIBIT C
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                        INTERIOR SPECIFICATION STANDARDS

                         ABBREVIATED BUILDING STANDARDS

Note: The Tenant Improvements shall be Class "A" and their quality must be at a
minimum, per the following standards:

GENERAL OFFICE

CUSTOM CABINETRY

      SCOPE: All materials and labor for the construction and installation of
      Cabinetry and all related accessories per WIC Standards.

A.    Trade Standards: Woodworking Institute of California (WIC) latest edition
      Section 15 and 16 for plastic laminated casework and plastic laminated
      countertops. Color of plastic laminate to be selected by Architect
B.    All cabinetry to be constructed to "Custom-Grade" Specifications.
      Cabinetry to be flush overlay construction.
C.    Plastic Laminate: High Pressure thermoset laminated plastic surfacing
      material to equal or surpass NEMA LD3, Nevamar, WilsonArt or approved
      equal.
      1.    Countertops, shelf-tops, splashes, and edges: Grade GP 50, 0.050 
            inches thick.
      2.    All other exposed vertical surfaces: Grade GP 28, 0.028 inches thick
      3.    Semi-exposed backing sheet: Grade CL 20, 0.020 inches thick
      4.    Concealed backing sheet; Grade BK 20, 0.020 inches thick
D.    Adhesives: Bond surfaces to Type 11 as recommend by Plastic Laminate
      Manufacturer.



E.    Hinges: Heavy-duty concealed self-closing hinges. Amount of hinges per
      Door per WIC. Stanley or approved equal
F.    Door and Drawer Pulls: Wire-pull with 4-inch centers; Dull Chrome finish;
      Stanley 4483 or approved equal.
G.    Drawer slides: Heavy-duty grade with ball-bearings. Stanley, Klein, or
      approved equal
H.    Door Catches: Heavy-duty commercial friction type.
      1.    Recessed Adjustable Shelf Standards: Aluminum or zinc-plated
            recessed type; Knape & Vogt with clips or approved equal.
J.    Base and Wall Cabinets including doors: 3/4-inch thick medium density
      particleboard:
      1.    Conceal all fastenings.
      2.    Provide clear spaces as required for mechanical and electrical 
            fittings
      3.    Plastic laminate and self-edge all shelves.
      4.    Provide 3/4-inch thick doors and drawer faces.
      5.    Unless indicated otherwise, all shelving to be adjustable.
      6.    Provide back and ends on all cabinets.
      7.    All exposed cabinet faces to be plastic-laminated.
K.    Countertops and Shelving: 3/4-inch thick medium density particleboard.
      Backsplash to be 3/4 inches thick, glued and screwed into top with scribed
      edges. Joints in countertop to be not closer than 24 inches from sinks.
      Joints shall be shop fitted, splined, glued and mechanically fastened. 
L.    Installation of Cabinetry shall be per WIC instructions, Custom Grade.

WOOD DOORS

SCOPE: All materials and labor necessary for the installation of Wood Doors, 
       required accessories and preparations for hardware.

A.    Non-rated Wood Doors: 1-3/4 inch thick, flush, solid core, plain sliced 
      Birch veneer with Birch edge. Cores may be either of the following: Glued 
      block Hardwood Core per NWMA or Particleboard Core per NWMA. Manufacturer:
      Algoma, Weyerhaeuser, or approved equal.
B.    Fire-rated Wood Doors: 1-3/4 inch thick, flush, solid core, plain sliced 
      Birch face veneer with Birch Edge with mineral core per rating. 
      Manufacturer: Algoma, Weyerhaeuser, or approved equal. Doors shall have a 
      permanent UL label.
C.    Vision Panels (where applies): Fire rated vision panel where required: Set
      in square metal stop to match metal doorstops as provided by doorframe 
      manufacturer.
D.    Doors shall be 8'- 0" x 3'-0" leafs typical.

ALUMINUM DOOR AND WINDOW FRAMES

SCOPE: All materials and labor necessary for the installation of Aluminum Door
Frames.

A.    Frame Manufacturers: Raco, or Ragland Manufacturing Company, Inc.
B.    Door Frames: Non-rated and 20-minute label, Raco "Trimstyle" frame with 
      Trim 700 (3/8 inch by 1- 1/2 inch) with no exposed fasteners.
C.    Finish, Door and Window Frame Extrusions, Wall Trim:
      1.    Painted and oven-cured with "Duralaq" finish.
      2.    Color: Clear.
      3.    Finish shall meet or exceed requirements of AAMA Specifications 603.
      4.    Coat inside of frame profile with bituminous coating to a thickness
            of 1/16 inch where in contact with dissimilar materials.

DOOR HARDWARE

SCOPE: All materials and labor for the installation of all Door Hardware,
Iocksets, closers, hinges,



miscellaneous door hardware.

A.    Swinging Door Lockset and Cylinder: Schlage "L" series with lever handle
      with 6 pin cylinder.
B.    Keyway: Furnish blank keyways to match existing master-key system. Match
      existing keyways.
C.    Finishes: Satin Chrome, 626 finish. Paint closers to match.
D.    Kickplates: 16 gauge stainless steel; 10 inches high: width to equal door
      width less 2 inches.

                                HARDWARE SCHEDULE

        Hardware Group A (Typical, rated, single door)

         1            Lockset            Schlage        L9050PD
         1-1/2 pair   Butt Hinges        Hager          BB1279
         1            Closer             Norton         700 Series
         1            Stop               Quality        (332 @ carpet)
         1            Smoke Seal         Pemko

Hardware Group B (Typical, rated, closet/service door)

         1            Lockset            Schlage        L9080PD
         1-1/2 pair   Butt Hinges        Hager          BB1279
         1            Closer             Norton         700 Series w/ hold-open
         1            Stop               Quality        (332 @ carpet)
         1            Smoke Seal         Pemko

Hardware Group C (Typical, non-rated door)

         1             Lockset           Schlage        L9050PD
         1-1/2 pair    Butt Hinges       Hager          BB1279
         1             Stop              Quality        (332 @ carpet)

Hardware Group D (Typical, non-rated, closet/service door)

         1             Lockset           Schlage        L9080PD
         1-1/2 pair    Butt Hinges       Hager          BB1279
         1             Stop              Quality        (332 @ carpet)

Hardware Group E (Card-access door)

         1             Electric Lockset  Schlage        L9080PDGU
         1-1/2 pair    Butt Hinges       Hager          BB1279 - NRP
         (2 pr @ 8' door)
         1             Electric Butt     Hager
         1             Closer            Norton         700 Series w/ hold-open
         1             Stop              Quality        (332 @ carpet)

Hardware Group F (Typical, double door)

         1             Electric Lockset  Schlage        L9050PD
         3 pair        Butt Hinges       Hager          BB1270
         1             Auto Flush Bolt   Glyn Johnson   FB-8
         1             Dustproof Strike  Glyn Johnson   DP2
         2             Closer            Norton         7700 Series
         2             Stop              Quality        (332 @ carpet)
         1             Astragal          Pemko
         1             Coordinator       Glyn Johnson
         1             Smoke Seal        Pemko



GLAZING

SCOPE: All materials and labor for the installation of Glass.

A.    Manufacturers: PPG Industries, or Viracon, Inc. See glazing schedule 
      below.
B.    Shop prepares all glazing. Edges to have no chips or fissures.
C.    Glazing Materials:

      1.    Safety Glass: ASTM C1048, fully tempered with horizontal tempering,
            Condition A uncoated, Type 1 transparent fiat, Class 1 clear,
            Quality q3 glazing select, conforming to ANSI Z97.1
      2.    Mirror Glass: Clear float type with copper and silver coating,
            organic overcoating, square polished edges, 1/4-inch thick,
      3.    Wire Glass: Clear, polished both sides, square wire mesh of woven
            stainless steel wire 1/2 inch x 1/2 inch grid; 1/4 inch thick.
      4.    Tempered Glass: 1/4 inch thick, no tong marks. UL rated for 1 -hour
            rating.
      5.    Spacers: Neoprene.
      6.    Tape to be poly-iso-butylene.

D.    Schedule:

      1.    Type A: 1/4-inch thick mirror, annealed, heat strengthened, or full
            tempered as required.
      2.    Type B: 1/4 inch thick clear float glass, annealed, heat
            strengthened, or full tempered as required.
      3.    Type C: 1/4-inch thick wire glass plate, square pattern "Baroque"

LIGHT GAUGE METAL FRAMING

SCOPE: All materials and labor necessary for the installation of metal framing
and related accessories.

A.    Structural Studs: 14 gauge punched channel studs with knurled screw-type
      flanges, prime-coated steel. Manufacturer: United States Gypsum SJ or
      approved equal. Submit cut-sheet of material.
B.    Partition Studs: 20 gauge studs with key-hole shaped punch-outs at 24
      inches on center. Manufacturer: United States Gypsum ST or approved equal.
C.    Fasteners for Structural Studs: Metal screws as recommended by metal
      system manufacturer. Weld at all structural connection points.
D.    Reinforce framed door and window openings with double studs at each jamb
      (flange-to-flange and weld) and fasten to runners with screws and weld.
      Reinforce head with 14 gauge double stud same width as wall. Screw and
      weld.
E.    Provide all accessories as required to fasten metal-framing per
      manufacturers recommendations.
F.    Provide and install fiat-strapping at all structural walls (walls with
      concrete footings beneath the walls). Minimum bracing shall be 25 % of
      structural walls shall be braced with fiat-strapping per Manufacturers
      recommendations. Weld at all strap ends and at all intermediate studs.
G.    Provide foundation clips at 4'-0" on center at structural walls. Anchor
      with 1/2 inch diameter by 10 inch long anchor bolts.
H.    Non-structural interior partitions shall be anchored with power-driven
      fasteners at 4'-0" on center at the concrete slab.

ACOUSTIC CEILING SYSTEM

SCOPE: All materials and labor for the installation of the Acoustic Ceiling
       System including T-Bar system, Acoustic Ceiling Panels, Suspension wiring
       and fastening devices and Glued-down Ceiling Panels.


A.    Manufacturer: Armstrong, or approved equal. Exposed T-bar system; factory
      painted; steel construction; rated for intermediate duty.
D.    Acoustical Tile: "Second Look", conforming to the following:
      1.    Size: 24 x 48 inches.
      2.    Thickness: 3/4 inches.
      3.    Composition: Mineral.
      4.    NRC Range: .55 to .60.
      5.    STC Range: 35 to 39.
      6.    Flame Spread: ASTME84,0-25. UL Label, 25 or under.
      7.    Edge: Tegular, Lay-in.
      8.    Surface Color: White.
      9.    Surface Finish: Factory-applied washable vinyl latex paint.

G.    Installation to be per ASTM C636 structural testing. Lateral support for
      each 96 square feet of ceiling flared at 45 degrees in 4 directions.
H.    Provide clips for panel uplift restraints at all panels, 2 per panel.

GYPSUM WALLBOARD

SCOPE: Provide all materials and labor for the installation of Gypsum Wallboard
including all accessories and finishes.

A.    Standard Gypsum Wallboard: ASTM C36;. Ends square cut, tapered edges.
B.    Fire Resistant Gypsum Wallboard: ASTM C36, 5/8 inches thick Type X. Ends
      square cut, tapered edges. See Drawings for locations.
C.    Moisture-resistant gypsum wallboard: ASTM C630-90.
D.    Joint-reinforcing Tape and Joint Compound: ASTM C475, as manufactured by
      or recommended by wallboard manufacturer. Minimum 3 coat application for a
      smooth finish.
E.    Corner Bead: Provide at all exposed outside corners;
F.    L-shaped edge trim: Provide at all exposed intersections with different
      materials.
G.    All work shall be done in accordance with the USG recommended method of
      installation.
      1.    Finish: smooth.

PAINTING

A.    Paint Manufacturers: ICI, Dunn-Edwards Corporation, Kelly Moore.
B.    Paint colors shall be selected by the Architect.
C.    Painting Schedule: Provide for 4 different color applications
      1.    P-l: "Field". Color to be selected.
      2.    P-2: "Accent". Color to be selected.
      3.    P-3: "Accent". Color to be selected.
      4.    P-4: "Accent". Color to be selected.
D.    Interior Gypsum Wallboard:
      1.    Primer: Vinyl Wall Primer/Sealer.
      2.    1 stand 2nd Coat: Eggshell Acrylic Latex.
E.    Metal Framing:
      1.    Primer: Red Oxide, shop-primed (for non-galvanized) if exposed.
F.    Wood Work, Wood Doors:
      1.    Two coats of transparent finish. Sand lightly between coats with
            steel wool.

INSULATION

A.    R-15 in exterior walls.
B.    R-25 on Roof.



C.    Sound batts in conference, restroom and lobby walls.

ROOF EQUIPMENT

A.    Stainless steel mechanical platform and associated access stairs and guard
      rail system
B.    EIFS roof screen to match detail of exterior GFRC Panel.

FULL HEIGHT GLAZED PARTITION

A.   1/4" glazed partition, in building standard aluminum frame

FINISHES

A.    Vinyl Composite Tile: Armstrong stonetex, 12"x 12"
B.    Resilient Base: Burke rubber wall base, 4" top set or cove, as appropriate
      for VCT or carpet.
C.    Window Coverings: Miniblinds, Levelor, color: TBD
D.    Carpet:

            Option 1: Designweave, Windswept Classic 30 oz. (Direct glue
                      installation) or equal

            Option 2: (cut pile) Designweave, Tempest Classic 32 oz. (Direct
            Upgrade   glue installation) or equal.

            Option 3: (cut pile) Designweave, Sabre Classic, 38 oz. (Direct glue
            Upgrade   installation) or equal.

KITCHEN FIXTURES

A.    Sink: Ekkay stainless steel, GECR-2521-L&R, 20 gauge, 25"w x 21 1/4" D x 5
      3/8" D, ADA compliant.
B.    Kitchen Faucet: American Standard, Silhouette Single control, #4205
      series, spout 9 3/4"

KITCHEN APPLIANCES

A.    Dishwasher:
            Option 1: GE GSD463DZWW, 24'W x 24 3/4" D x 34-35" H, 9 gallons/wash
            Option 2: Bosch, SHU5300 series, 5.4 gallons/wash-with water heater

B.    Refrigerator:
            Full Size: GE, "S" series top-mount, TBX16SYZ, 16.4 cubic
                       feet, recessed, recessed handles, 28" W x 29 1/8" D x
                       66 3/4" H, white, optional factory installed
                       ice-maker.

            Under-counter:
                 Option 1: U-Line, #29R, 3.5 cubic feet, white
                 Option 2: U-Line, Combo 29FF, Frost Free with factory installed
                           icemaker, 2.1 cubic feet, white

C.    Microwave:  GE, Spacemaker II JEM25WY, Midsize, 9 cubic feet, 800 watts, 
                  23 13/-16" W x 11 13/16"D x 12 5/16" H


                  Option 1:  Under counter Mounting Kit, #4AD19-4
                  Option 2:  Accessory Trim Kit # JXB37WN, 26 1/8" W X 18 1/4" H
                             (built-in application)

D.    Garbage Disposal: ISE #77, 3/4" horsepower

E.    Water Heater: To be selected by DES.

PUBLIC SPACES

FRONT BUILDING LOBBY

     Walk Off Matts:       Design Materials, Sisel, Calcetta #68. Natural, 
                           100% coir

     Floor Tile:           3/8" x 18" x 18" Stone or Marble set in mortar bed in
                           recessed slab as approved by Owner

     Transition Strips:    5/16" x 11/4" x random length strips, cherry wood 
                           flooring

     Corridor Carpeting:   Carpet over pad, Atlas, New Vista or as approved by 
                           Owner

     Lobby Ceiling:        Suspended gypsum board ceiling, Painted

     Building Lobby:       Akarl shades hanging #J1-9 3/4" x 5'-2" or equal as 
                           approved Pendant Fixture by owner.

     Stairs & P & P Railing, Modesto with custom cherry guard rail
     Mezzanine Railing:    Rep: Oliver Capp (805) 241-8810. Hand and guard 
                           railing P & P Railings, Modesto stainless steel 
                           railing with horizontal spirals and custom cherry 
                           guard rail cap by others, fittings dark gray metallic
                           or equal as approved by Owner.

BACK BUILDING LOBBY & EMERGENCY STAIRS

     Walk Off Matts:       Design Materials, Sisal, Calcutta #68, Natural, 100%
                           coir.

     Treads & Landings:    Carpet covered concrete, as approved by Owner

     Stringers, Risers     Painted steel stringer, eggshell finish & enamel.
     Handrails 

     Ceiling:              Suspended gypsum board ceiling.

ELEVATORS

     Cars:                 (1) 3800 Ib, (t) 3500 lb 150 ft/min by Otis

     Elevator Doors:       Stainless Steel

     Elevator
     Interior Paneling:    Cherry veneer with stainless steel reveals and 
                           railing

     Elevator Floor:       Slate 3/8" x 18" x 18" tile as approved by Owner.



RESTROOMS

     Counter tops:         Stone/marble or equal as approved by Owner

     Walls at Lavatories:  Eggshell finish, latex paint, Benjamin Moore

     Floor at Toilets:     2" x 2" matte porcelain ceramic floor tiles, thin 
                           set, Dal-tile.

     Walls at Toilets:     2" x 2" matte porcelain ceramic floor tiles, thin 
                           set, Dal-tile.

     Ceiling:              Suspended gypsum board ceiling.

     Toilet compartments:

            A.    Manufactured floor-anchored metal toilet compartments and
                  wall-hung urinal screens.

            B.    Approved Manufacturer, Global Steel Products Corp, or approved
                  equal.

            C.    Toilet Partitions; Stainless Steel finish.

            D.    Hardware: Hinges: Manufacturer's standard self-closing type
                  that can be adjusted to hold door open at any angle up to 90
                  degrees. Latch and Keeper: Surface-mounted latch unit,
                  designed for emergency access, with combination rubber-faced
                  door strike and keeper. Coat Hook: Combination hook and
                  rubber-tipped bumper. Door Pull: Manufacturer's standard.

      Ceramic Tile

            A.    Manufacturer: DaI-Tile or approved equal.

            B.    Size: 4-1/4" x 4-1/4" for walls, 8 x 8 for floors, 3/4" liner
                  Strip as accent.

            C.    Glaze: Satin glaze for walls, unglazed tile for floors.

            D.    Color: As selected by Architect.

            E.    Accessories: Base, corners, coved cap and glazed to match

            F.    Wall and floor installation: per applicable TCA

            G.    Waterproof Membrane: Chloraloy or approved equal.

            H.    Tile Backer Board: 1/2 inch thick wonderboard

            I.    Grout: Commercial Portland Cement Grout; Custom Building
                  Products or approved equal

            J.    Mortar: Latex-Portland cement mortar; Custom Building Products
                  or approved equal.

RESTROOM:

      Toilet:              Kohler/American Standard, commercial quality.

      Urinal:              Kohler/American Standard, commercial quality.

      Lavatory:            Kohler/American Standard, undercounter.

      Lavatory Faucet:     Kroin handicap lavatory faucet #HV1LH, polished 
                           chrome.

      Soap Dispenser       Bobrick, 8226, Lavatory mounted for soaps, 34 fl oz. 
      Counter:

      Toilet accessories:

            A.    Manufacturer: Bobrick Washroom Equipment, or approved equal.


            B.    Schedule: Model numbers used in this schedule are Bobrick
                  (134) unless otherwise noted.
            C.    Combination Paper Towel Dispenser/Waste Receptacle: Recessed,
                  Model B-3944, one per restroom #7151 and 7152, and two per
                  restroom #7050 and 7061.
            D.    Feminine Napkin Vendor: Recessed, combination napkin/tampon
                  vendor, Model B-3500, with 25 cent operation, one per each
                  women's toilet room.
            E.    Soap Dispenser: Lavatory mounted dispenser, Model B-822, one
                  per each lavatory.
            F.    Toilet Paper Dispenser: Surface-mounted, Model JRT, JR Escort,
                  "In-Sight" by Scott Paper Company, one per stall.
            G.    Toilet Seat Cover Dispenser: Recessed, wall-mounted, Model
                  B-301, one per stall.
            H.    Sanitary Napkin Disposal: Recessed, wall-mounted, Model B-353,
                  one per each women's handicapped and odd stall.
            I.    Sanitary Napkin Disposal: Partition-mounted, Model B-354
                  (serves two stalls).
            J.    Grab Bars: Horizontal" 36, B6206-36: 42", B62-6-42: one per
                  each handicapped stall.
            K.    Mop/Broom Holders: B223-24 (one per janitor closet).
            L.    Paper Towel Dispensers: Recessed mounted, Model B-359, one at
                  side wall adjacent to sink.

TENANT CORRIDORS

      Walls:               Eggshell finish, latex paint, Benjamin Moore.

      Floors:              Level loop carpet over pad with 4" resilient base as 
                           approved by Owner.

      Ceiling:             24" x 24" x 3/4" thick fine fissured type mineral 
                           fiber, Armstrong Cirus acoustical tile (beveled 
                           regular edge) in a 24" x 24" Donn Fineline suspended 
                           grid, white finish.

      Water Fountain:      Haws Model #1114 Stainless Steel #4.

      Cross Corridor       3'-6" x full height, 20 minute rated, pocket 
      Smoke Detector:      assembly, on magnetic hold opens.

      Corridor             Carpyen "Berta" 35cm x 33 cm, engraved curved opaque 
      Wall Sconce          glass, 2 x 7-9W, #G-23 or equal as approved by owner 

ELECTRICAL

A.    50 foot candles at working surface.
B.    3 Bulb 2x4 parbolic fixtures
C.    1/2 20 Amp circuit for each hard wall office
D.    Electrical Devices: Recessed wall mounted devices with plastic cover
      plate. Color: white, multi-gang plate 80400 Series duplex wall outlets.
E.    Telephone/Data Outlets: Recessed wall mounted, Standard 2x4 wall box
      with 3/4" EMT conduit from box to sub out above ceiling walls pull string,
      cabling, terminations and cover-plates, color: white, provided by tenant's
      vendor. Tenant shall furnish telephone backboard.
F.    Light Switches: Dual level rocker type, mounted at standard locations,
      with plastic cover plate, 5325-W cover plate single switch B0401-W, double
      switch B0409-W. Decors by Leviton, colors: white, and will comply With
      Title 24 Energy Codes. Decors by Leviton.



MECHANICAL

A.    VAV Reheat system - design/build. Each floor to have a minimum of thirty
      zones. Provide reheat boxes on all zones on top floor and at all exterior
      zones on lower floor. System shall meet T-24 for ventilation.. Design
      shall be for 73 deg. Ambient interior temperature and 2 1/2 watts per sq.
      ft. min.

FIRE SPRINKLER SYSTEM

As required by NFPA & factory mutual standard hazard, seismically braced.

                                       END



                                    EXHIBIT D
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA INC.
                                       FOR
                                    Premises
                                       At
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                   COST RESPONSIBILITIES OF LESSOR AND LESSEE
                          FOR SHELL TENANT IMPROVEMENTS

      A. Lessor is responsible for the construction of the building shell
improvements which shall include the following items:

            Soils Engineer
            Civil Engineer
            Architectural and Structural Engineer
            Landscaping
                  Empty Electrical Conduits will be provided from the street to
                  the future electrical room for a 2500 Amp. Service 277/480
                  volt service capability for each building. The electrical
                  conduits will be stubbed up above the floor level.
            Lessor to provide two vertical risers for fire sprinklers.
            Testing and Inspection for the shell.
            Building Permits for the Shell and exterior Premises.
            Utility Connection Fee (Fire Protection).
            Area Fees
            Construction Insurance
            Construction Interest
            Construction Taxes
            Land Interest (if any) 
            Temporary Facilities 
            All site work to include:
                  Site clearing and grading
                  Excavating/Fill
                  Soil compaction
                  Site drainage
                  Site utilities
                  Paving


                  Curbs and gutters 
                  Sidewalks 
                  Parking lot lights
                  Curb painting and parking lot striping and markings as 
                        required by the City.
            Fences, to include special enclosures for trash Irrigation System
            Lawns and planting 
            Building Shells to include:
                  Concrete Formwork 
                  Concrete Reinforcement (if used) 
                  Cast in pace concrete (if used) 
                  Metal decking (if used)
            Metal framing (if used) 
            Rough carpentry as related to shell
            Millworks as related to Shell 
            Glue-Lam structure (if used) 
            Building roof installation 
            Roofing tiles 
            Flashing 
            Drainage Systems for Roof
            Roof Pitch Pans 
            Caulking/Sealants 
            Exterior Metal Door/Frames related to the Shell
            Wood or Glass Doors as designated as related to the 
            Exterior Shell
            Overhead Doors 
            Anodized Aluminum Windows 
            Finish Hardware as related to the Shell Doors 
            Glass Glazing as specific on plans 
            Storefront if desired 
            Gutters over front and rear entrances 
            Exterior Loading Docks as specific on plans
            Water Supply stubbed to the ground floor (first floor of each
            Building only) 
            Roof drainage 
            Gas piping to face of building at First Floor 
            Telephone and computer conduits between Buildings 
            All Government fees applying to the exterior premises and shell.

      B. The following shall be considered interior improvements costs and shall
be the responsibility of the Lessee as provided in the Lease:

            Interior Building Permits
            Gypsum drywall
            Ceramic Tile or elate Tile in Lobbies
            Quarry Tile as specified



            Quarry Tile as specified
            Flag Pole
            Meal door framing
            All interior Wood doors and Hardware
            Custom Woodwork
            Specialized Security construction
            Interior Glass doors 2nd windows
            Acoustical Treatment (suspended ceiling)
            Resilient flooring
            Any special flooring
            Carpeting
            Sprayed fire proofing if required by the code on structural 
            Steel and metal deck surfaces 
            Lift and Lift Operator 
            Interior Painting
            Wall Coverings including Ceramic Tiles 
            Grease Interceptor if  required 
            Drapery, Blinds or Shades 
            Pedestal floors 
            Toilet Compartments 
            Demountable partitions 
            Firefighting devices (Extinguishers) 
            Toilet and bath accessories 
            Lift (Dock levelers)
            Plumbing fixtures, trims and vertical piping 
            Interior electrical distribution 
            Lighting 
            Electrical controls 
            Electrical Power Equipment
            Built in Audio-Visual facilities 
            Built-in Projection screens 
            Water Treatment Discharge 
            Sinks in Coffee Rooms 
            Lunch Room plumbing for vending machines 
            Specialized security systems 
            Specialized Halon Fire Extinguishing systems 
            Fire sprinkler head drops and horizontal distribution 
            Piping off owner-installed vertical risers 
            Specialized caging 
            Special piping for Tank Farm (If installed) 
            Hot water heating system 
            Cool water system 
            HVAC units 
            Ducting controls 
            Air Tempering Systems 
            Elevators and elevator pits (Otis Elevator Lessor Specs)


            Mechanical platforms, screens and associated roof accessories 
            Stairs
            Electrical service (Lessor to provide exterior conduits)


                                    EXHIBIT E
                                       TO
                             MOFFETT PARK DRIVE LLC
                                    LEASE TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                   MEMORANDUM
                                       OF
                           COMMENCEMENT OF LEASE TERM

            Pursuant to Article III, Section 3.01, paragraph (a) of the
above-referenced Lease, the parties to said Lease agree to the following:

      1.    The Commencement Date of the Lease is ________________, 2001 and the
            Lease Term commenced on said date. The Expiration Date for the
            initial Lease Term is ______________, 2013.

      2.    The date for commencement of rent for Building Three is
            _____________, 2001; for Building 2 is _______,2001; for Building 1
            is ________________,2001; for Building 4 is ___________, 2001; and
            for the Amenity Building is _____________, 2001.

      3.    Attached hereto as a part hereof is a true and correct schedule of
            Base Rent.

      4.    The total Rentable Area of all of the Buildings is ____________ 
            (          ) rentable square feet.

      Each person executing this Memorandum certifies that he or she is
authorized to do so on behalf of and as the act of the entity indicated.
Executed as of ___________, 2001, at Sunnyvale (Santa Clara County), California.

MOFFETT PARK DRIVE LLC,             ARIBA INC.                         [SEAL]
a California limited                a Delaware corporation
liability company

By:                                 By:
    --------------------------         ----------------------------------
      Jay Paul                         ----------------------------------
Its:  Manager                              (Type or print name)
                                    Its:_________________________________

                                    By:__________________________________
                                       __________________________________
                                    (Type or print name) 
                                    Its:_________________________________


--------------------------------------------------------------------------------
                            SCHEDULE TO EXHIBIT E

                                 ARIBA LEASE
                     MEMORANDUM AND COMMENCEMENT OF RENT
                        TERM AND SCHEDULE OF BASE RENT

   Building 3
--------------------------------------------------------------------------------
   Beginning      Rental Rate       Sq. Ft.             Monthly        Annually
--------------------------------------------------------------------------------

    1/25/01          $3.00          175,000         $525,000.00   $6,300,000.00
    1/25/02          $3.11          175,000         $543,375.00   $6,520,500.00
    1/25/03          $3.21          175,000         $562,393.13   $6,748,717.50
    1/25/04          $3.33          175,000         $582,078.88   $6,984,922.81
    1/25/05          $3.44          175,000         $602,449.58   $7,229,394.90
    1/25/06          $3.56          175,000         $623,535.31   $7,482,423.73
    1/25/07          $3.69          175,000         $645,359.05   $7,744,308.56
    1/25/08          $3.82          175,000         $667,946.61   $8,015,359.38
    1/25/09          $3.95          175,000         $691,324.74   $8,295,896.93
    1/25/10          $4.09          175,000         $715,521.11   $8,586,253.33
    1/25/11          $4.23          175,000         $740,564.35   $8,886,772.19
    1/25/12          $4.38          175,000         $766,484.10   $9,197,809.22

   Building 4
--------------------------------------------------------------------------------
   Beginning      Rental Rate       Sq. Ft.             Monthly        Annually
--------------------------------------------------------------------------------

    2/15/01          $3.00          175,000         $525,000.00   $6,300,000.00
    2/15/02          $3.11          175,000         $543,375.00   $6,520,500.00
    2/15/03          $3.21          175,000         $562,393.13   $6,748,717.50
    2/15/04          $3.33          175,000         $582,076.88   $6,984,922.61
    2/15/05          $3.44          175,000         $602,449.58   $7,229,394.90
    2/15/06          $3.56          175,000         $623,535.31   $7,482,423.73
    2/15/07          $3.69          175,000         $645,359.05   $7,744,308.56
    2/15/08          $3.82          175,000         $667,948.61   $8,015,359.36
    2/15/09          $3.95          175,000         $691,324.74   $8,295,898.93
    2/15/10          $4.09          175,000         $715,521.11   $8,586,253.33
    2/15/11          $4.23          175,000         $740,564.35   $8,886,772.19
    2/15/12          $4.38          175,000         $766,484.10   $9,197,808.22




    Building 2
--------------------------------------------------------------------------------
    Beginning       Rental Rate      Sq. Ft.             Monthly       Annually
--------------------------------------------------------------------------------

      3/8/01           $3.00         175,000         $525,000.00  $6,300,000.00
      3/8/02           $3.11         175,000         $543,375.00  $6,520,500.00
      3/8/03           $3.21         175,000         $562,383.13  $6,748,717.50
      3/8/04           $3.33         175,000         $582,076.88  $6,984,922.61
      3/8/05           $3.44         175,000         $602,449.58  $7,229,394.90
      3/8/06           $3.56         175,000         $623,535.31  $7,482,423.73
      3/8/07           $3,69         175,000         $645,359.05  $7,744,308.56
      3/8/08           $3.82         175,000         $667,946.81  $8,015,359.36
      3/8/09           $3.95         175,000         $691,324.74  $8,295,896.93
      3/8/10           $4.09         175,000         $715,521.11  $8,586,253.33
      3/8/11           $4.23         175,000         $740,564.35  $8,886,772.19
      3/8/12           $4.38         175,000         $766,484.10  $9,197,809.22

    Building 1
--------------------------------------------------------------------------------
    Beginning       Rental Rate      Sq. Ft.             Monthly       Annually
--------------------------------------------------------------------------------

     3/29/01           $3.00         175,000         $525,000.00  $6,300,000.00
     3/29/02           $3.11         175,000         $543,375.00  $6,520,500.00
     3/29/03           $3.21         175,000         $562,393.13  $6,748,717.50
     3/29/04           $3.33         175,000         $582,076.88  $6,984,922.61
     3/29/05           $3.44         175,000         $602,449.58  $7,229,394.90
     3/29/06           $3.56         175,000         $623,535.31  $7,482,423.73
     3/29/07           $3.69         175,000         $645,359.05  $7,744,308.56
     3/29/08           $3.82         175,000         $667,946.61  $8,015,359.36
     3/29/09           $3.95         175,000         $691,324.74  $8,295,896.93
     3/29/10           $4.09         175,000         $715,521.11  $8,586,253.33
     3/29/11           $4.23         175,000         $740,564.35  $8,886,772.19
     3/29/12           $4.38         175,000         $766,484.10  $9,197,809.22

 Amenity Building
--------------------------------------------------------------------------------
    Beginning       Rental Rate      Sq. Ft.             Monthly       Annually
--------------------------------------------------------------------------------

     3/29/01           $3.00          15,000          $45,000.00    $540,000.00
     3/29/02           $3.11          15,000          $46,575.00    $558,900.00
     3/29/03           $3.21          15,000          $48,205,13    $578,461.50
     3/29/04           $3.33          15,000          $49,892.30    $598,707.65
     3/29/05           $3.44          15,000          $51,638.54    $619,662.42
     3/29/06           $3.56          15,000          $53,445.88    $641,350.61
     3/29/07           $3.69          15,000          $55,316.49    $663,797.88
     3/29/08           $3.82          15,000          $57,252.57    $687,030.80
     3/29/09           $3.95          15,000          $59,256.41    $711,076.88
     3/29/10           $4.09          15,000          $61,330.38    $735,964.57
     3/29/11           $4.23          15,000          $63,476.94    $761,723.33
     3/29/12           $4.38          15,000          $65,698.84    $788,383.65

Provided, actual square footage may be adjusted at final measurement per lease.
Provided, actual commencement date will be determined per lease,
--------------------------------------------------------------------------------


                                    EXHIBIT F
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      Lease
                                       To
                                   ARIBA INC.
                                  For Premises
                                       At
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                      SNDA
                                      ----

                 (See Construction and Permanent SNDA Samples Attached as
                       Schedule One and Schedule Two; respectively)


                                  SCHEDULE ONE
                                       TO
                                    EXHIBIT F
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      Lease
                                       To
                                   ARIBA INC.
                                  For Premises
                                       At
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                      SNDA

                  (See Construction and Permanent SNDA Samples Attached)



RECORDING REQUESTED AND
WHEN RECORDED RETURN TO:

KEYBANK NATIONAL ASSOCIATION 
Real Estate Division 
Mailcode WA-31-10-5285 
700 Fifth Avenue, 52nd Floor 
Seattle, WA 98104-5099 
Attn:____________________
Loan No.:________________

-------------------------------------------------------------------------------

               SUBORDINATION, ACKNOWLEDGMENT OF LEASE ASSIGNMENT,
                    NONDISTRUBANCE AND ATTORNMENT AGREEMENT

                            AND ESTOPPEL CERTIFICATE

                            (Lease to Deed of Trust)

NOTICE: THIS SUBORDINATION AGREEMENT RESULTS IN YOUR 
        LEASE BECOMING SUBJECT TO AND OF LOWER 
        PRIORITY THAN THE LIEN OF THE DEED OF TRUST 
        (DEFINED BELOW).

      THIS AGREEMENT AND CERTIFICATE is made this ______ day of ____ , 2000,
between KEYBANK NATIONAL ASSOCIATION, a national banking association ("Lender")
and ________________________, a ________________ ("Tenant").

                                    RECITALS

      A. _________________ ("Landlord"), is the owner of real property
("Property") located in ______________ County, California, and legally described
on Exhibit A.

      B. Tenant is a tenant of a portion of the Property ("Premises") under a
lease ("Lease") with Landlord dated _____________.

      C. Lender has agreed to make a loan ("Loan") to Landlord. In connection
therewith, Landlord has executed or proposes to execute, a Construction Deed of
Trust, Assignment of Rents and Leases, Security Agreement and Fixture Filing
("Deed of Trust") encumbering the Property and securing, among other things, a
promissory note ("Note") in the principal sum of __________DOLLARS ($_______ ), 
of even date herewith, in favor of Lender, which Note is payable with interest
and upon the terms described therein. The Deed of Trust is to be recorded
concurrently herewith.

      D. The Deed of Trust constitutes a present assignment to Lender of all
right, title,



and interest of Landlord under the Lease.

      E. Lender's agreement to make the Loan is conditioned on Tenant's specific
and unconditional subordination of the Lease to the lien of the Deed of Trust
such that the Deed of Trust at all times remains a lien on the Property, prior
and superior to all the rights of Lessee under the Lease, and Tenant's agreement
to attorn to Lender if Lender obtains possession of the Property by foreclosure
or deed in lieu of foreclosure. Tenant is willing to do so in consideration of
the benefits to Tenant from the Loan and the Lease and Lender's agreement not
to disturb Tenant's possession of the Premises under the Lease.

      NOW, THEREFORE, Lender and Tenant agree as provided below.

      1. Subordination. Tenant hereby intentionally and unconditionally
subordinates the Lease and all of Lessee's right, title and interest thereunder
and in and to the Property to the lien of the Deed of Trust and all of Lender's
rights thereunder, including any and all renewals, modifications and extensions
thereof and agrees that the Deed of Trust and any and all renewals,
modifications and extensions thereof shall unconditionally be and at all times
remain in lien on the Property prior and superior to the Lease. Without limiting
the generality of the foregoing, such subordination shall include all rights of
Tenant in connection with any insurance or condemnation proceeds with respect to
the Premises or Property.

      2. Acknowledgment. Tenant understands that Lender would not make the Loan
without this Agreement and the subordination of the Lease to the lien of the
Deed of Trust as set forth herein and that in reliance upon, and in
consideration of, this subordination, specific loans and advances are being and
will be made by Lender and, as part and parcel thereof, specific monetary and
other obligations are being and will be entered into which would not be made or
entered into but for reliance upon this subordination. This Agreement is and
shall be the sole and only agreement with regard to the subordination of the
Lease to the lien of the Deed of Trust and shall supersede and cancel, but only
insofar as would affect the priority between the Deed of Trust and the Lease,
any prior agreement as to such subordination, including, without limitation,
those provisions, if any, contained in the lease which provide for the
subordination of the Lease to a deed or deeds of trust or to a mortgage or
mortgages.

      3. Use of Proceeds. Lender, in making disbursements pursuant to the Note,
the Deed of Trust or any loan agreement with respect to the property, is under
no obligation or duty to, nor has Lender represented that it will, see to the
application of such proceeds by the person or persons to whom Lender disburses
such proceeds, and any application or use of such proceeds for purposes other
than those provided for in such agreement or agreements shall not defeat this
agreement to subordinate in whole or in party.

      4. Nondisturbance. Lender agrees that Tenant's possession of the Premises
shall not be disturbed by Lender during the tern of the Lease, and Lender shall
not join Tenant in any action or proceeding for the purpose of terminating the
Lease, except upon the occurrence of a default by Tenant under the Lease and the
continuance of such default beyond any cure period given to Tenant under the
Lease.



      5. Attornment. If Lender obtains possession of the Property by foreclosure
or deed in lieu of foreclosure, Tenant shall attorn to Lender, be bound to
Lender in accordance with all of the provisions of the Lease for the balance of
the term thereof, and recognize Lender as the landlord under the Lease for the
unexpired term of the Lease. Such attornement shall be effective without Lender
being (i) subject to any offsets or defenses, or otherwise liable, for any prior
act or omission of Landlord, (ii) bound by any amendment, modification, or
waiver of any of the provisions of the Lease, or by any separate agreement
between Landlord and Tenant relating to the Premises or Property, unless any
such action was taken with the prior written consent of Lender, (iii) liable for
the return of any security or other deposit unless the deposit has been paid to
Lender, (iv) bound by any payment of rent or other monthly payment under the
Lease made by Tenant more than one (1) month in advance of the due date, or (v)
bound by any option, right of first refusal, or similar right of Tenant to lease
any portion of the Property (other than the Premises) or to purchase all or any
portion of the Property. Lender's obligations as landlord under the Lease after
obtaining possession of the Property by foreclosure or deed in lieu of
foreclosure shall terminate upon Lender's subsequent transfer of its interest in
the Property.

      6. Termination of Lease. Notwithstanding any other provision of this
Agreement, in the event Lender obtains ownership of the Property by foreclosure
or deed in lieu of foreclosure and the Lease requires the landlord to construct
any improvements on the Premises or Property, the Lease shall terminate unless
(i) Lender delivers written notice to Tenant expressly assuming such obligation
within ten (10) days after the foreclosure sale or acceptance of the deed in
lieu of foreclosure, or (ii) Tenant waives such obligation by delivery of
written notice to Lender within ten (10) days after receiving notice of the
foreclosure or deed in lieu of foreclosure.

      7. Covenants of Tenant. Tenant covenants and agrees with Lender as
follows:

            (a) Tenant shall pay to Lender all rent and other payments otherwise
payable to Landlord under the Lease upon written demand from Lender. The consent
and approval of Landlord to this Agreement shall constitute an express
authorization for Tenant to make such payments to Lender and a release and
discharge of all liability of Tenant to Landlord for any such payments made to
Lender.

            (b) Tenant shall enter into no material amendment or modification of
any of the provisions of the Lease without Lender's prior written consent.

            (c) Tenant shall not subordinate its rights under the Lease to any
other mortgage, deed of trust, or other security instrument without the prior
written consent of Lender.

            (d) In the event the Lease is rejected or deemed rejected in any
bankruptcy proceeding with respect to Landlord, Tenant shall not exercise its
option to treat the Lease as terminated under 11 U.S.C. ss. 365(h), as amended.

            (e) Tenant shall not accept any waiver or release of Tenant's.
obligations under the Lease by Landlord, or any termination of the Lease by
Landlord, without Lender's prior written consent.



            (f) Tenant shall promptly deliver written notice to Lender of any
default by Landlord under the Lease. Lender shall have the right to cure such
default within thirty (30) days after the receipt of such notice. Tenant further
agrees not to invoke any of its remedies under the Lease until the thirty (30)
days have elapsed, or during any period that Lender is proceeding to cure the
default with due diligence, or is attempting to obtain the right to enter the
Premises and cure the default.

      8. Effect of Assignment. Notwithstanding that Landlord has made a present
assignment of all of its rights under the Lease to Lender, Lender shall not be
liable for any of the obligations of Landlord to Tenant under the Lease until
Landlord has obtained possession of the Property by foreclosure or deed in lieu
of foreclosure, and then only to the extent provided in paragraph 3 above.

      9. Estoppel Certifications. Tenant hereby certifies and represents to
Lender as provided below.

            (a) The Lease constitutes the entire agreement between Landlord and
Tenant relating to the premises and the Property.

            (b) The Lease is in full force and effect, and has not been amended,
modified, or assigned by Tenant, either orally or in writing.

            (c) No payments to become due under the Lease have been paid more
than one (1) month in advance of the due date.

            (d) Tenant has no present claim, offset or defense under the Lease,
and Tenant has no knowledge of any uncured breach or default by Landlord or
Tenant under the Lease or of any event or condition which, with the giving of
notice or the passage of time or both, would constitute a breach or default
under the lease.

            (e) Tenant has no knowledge of any prior sale, transfer, assignment,
hypothecation or pledge of Landlord's interest under the Lease or of the rents
due under the Lease.

            (f) Except as otherwise provided in the Lease, Tenant has made no
agreements with Landlord concerning free rent, partial rent, rebate of rental
payments, setoff, or any other type of rental concession.

      10. Costs and Attorneys' Fees. In the event of any claim or dispute
arising out of this Agreement, the party that substantially prevails shall be
awarded, in addition to all other relief, all attorneys' fees and other costs
and expenses incurred in connection with such claim or dispute; including
without limitation those fees, costs, and expenses incurred before or after
suit, and in any arbitration, and any appeal, any proceedings under any present
or future bankruptcy act or state receivership, and any post-judgment
proceedings.



      11. Notices. All notices to be given under this Agreement shall be in
writing and personally delivered or mailed, postage prepaid, certified or
registered mail, return receipt requested, to Lender at the address indicated on
the first page of this Agreement, and to Tenant at its address indicated below.
All notices which are mailed shall be deemed given three (3) days after the
postmark thereof. Either party may change their address by delivery of written
notice to the other party.

      12. Miscellaneous. This agreement may not be modified except in writing
and executed by the parties hereto or their successors in interest. This
agreement shall inure to the benefit of and by binding upon the parties hereto
and their successors and assigns. As used herein "Landlord" shall include
Landlord's predecessors and successors in interest under the Lease, and "Lender"
shall include any purchaser of the Property at any foreclosure sale. All rights
of Lender herein to collect rents on behalf of Landlord under the Lease are
cumulative and shall be in addition to any and all other rights and remedies
provided by law and by other agreements between Lender and Landlord or others.
If any provision of this Agreement is determined to be invalid, illegal or
unenforceable, such provision shall be considered severed from the rest of this
Agreement and the remaining provisions shall continue in full force and effect
as if such provision had not been included. This Agreement shall be governed by
the laws of the State of California. This Agreement may be executed in one or
more counterparts, all of which together shall constitute one and the same
original.

      DATED this ________ day of __________________, 2000,

NOTICE:     THIS SUBORDINATION AGREEMENT RESULTS IN YOUR 
            LEASE BECOMING SUBJECT TO AND OF LOWER 
            PRIORITY THAN THE LIEN OF THE DEED OF TRUST 
            (DEFINED ABOVE). IT IS RECOMMENDED THAT, PRIOR 
            TO THE EXECUTION OF THIS AGREEMENT, THE 
            PARTIES CONSULT WITH THEIR ATTORNEYS WITH 
            RESPECT HERETO.

                                                   "LENDER"

                                    KEYBANK NATIONAL ASSCIATION,
                                    a National banking association

                                    By:_________________________
                                    Its:________________________

                                    "TENANT"

                                    ___________________________,
                                    a __________________________

                                    By:_________________________
                                    Its:________________________
                                        Address:

                                       _________________________

                                       _________________________

                                       _________________________

CONSENTED AND AGREED TO:

"LANDLORD"

____________________________,
a ___________________________

By:__________________________
Its:_________________________

ALL SIGNATURES MUST BE ACKNOWLEDGED



STATE OF CALIFORNIA     )
                              ) ss.
COUNTY OF_______________)

      On ________________________, 2000, before me, ____________________ the
undersigned, a notary public in and for said state, personally appeared
_______________________________, personally known to me (or proved to me on the
basis of satisfactory evidence) to be the person whose name is subscribed to the
within instrument and acknowledged to me that he/she executed the same in
his/her authorized capacity, and that by his/her signature on the instrument the
person, or the entity upon behalf of which the person acted, executed the
instrument.

      WITNESS my hand and official seal.



                                    EXHIBIT A

                                       TO

                        SUBORDINATION, NONDISTURBANCE AND

                      ATTORNMENT AGREEMENT AND ESTOPPEL CERTIFICATE

                                Legal Description

      The Property is located _________________in County, California and is
legally described as follows:



                                  SCHEDULE TWO
                                       TO
                                    EXHIBIT F
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      Lease
                                       To
                                    ARIBA INC
                                  For Premises
                                       At
                            1111 Lockheed Martin Way
                              Sunnyvale, California
                                      SNDA

                      (See Permanent SNDA Sample Attached)



                         SUBORDINATION, NON-DISTURBANCE

                            AND ATTORNEMENT AGREEMENT

      THIS SUBORDINATION, NON-DISTURBANCE AND ATTORNMENT AGREEMENT (this
"Agreement") made as of the __________ day of ___________,2000, by and among
Nomura Asset Capital Corporation ("Lender"), ("Tenant") and _____________
("Landlord").

                                 WITNESSETH:
                                 ----------

      WHEREAS, Lender has agreed to make a loan (the "Loan") of up to
______________________ to Landlord;

      WHEREAS, the Loan will be evidenced by a deed of trust note (the "Note")
of even date herewith made by Landlord to order of Lender and will be secured
by, among other things, a deed of trust, assignment of leases and rents and
security agreement (the "Deed of Trust") of even date herewith made by Landlord
to Lender covering the land (the "Land") described on Exhibit A attached hereto
and all improvements (the "Improvements") now or hereafter located on the land
(the Land and the Improvements hereinafter collectively referred to as the
"Property"); and

      WHEREAS, by a lease dated as of ___________________(which lease, as the
same may have been amended and supplemented, is hereinafter called the "Lease"),
Landlord leased to Tenant approximately _____ square feet of space located in
the Improvements (the "Premises"); and

      WHEREAS, the parties hereto desire to make the Lease subject and
subordinate to the Deed of Trust.

      NOW, THEREFORE, the parties hereto, in consideration of the covenants
contained herein and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, hereby agree as follows:

      1. The Lease, as the same may hereafter be modified, amended or extended,
and all of Tenant's right, title and interest in and to the Premises and all
rights, remedies and options of Tenant under the Lease, are and shall be
unconditionally subject and subordinate to the Deed of Trust and the lien
thereof, to all the terms, conditions and provisions of the Deed of Trust, to
each and every advance made or hereafter made under the Deed of Trust, and to
all renewals, modifications, consolidations, replacements, substitutions and
extensions of the Deed of Trust, so that at all times the Deed of Trust shall be
and remain a lien on the Property prior and superior to the Lease for all
purposes; provided, however, and Lender agrees, that so long as (A) no event has
occurred and no condition exists, which would entitle Landlord to terminate the
Lease or would cause, without further action of Landlord, the termination of the
Lease or would entitle Landlord to dispossess Tenant from the Premises, (B) the
term of the Lease has commenced and Tenant is in possession of the Premises, (C)
the Lease shall be in full force and effect and shall not have been otherwise
modified or supplemented in any way without Lender's prior written consent, (D)
Tenant shall duly confirm its attornment to Lender or its successor or assign by



written instrument as set forth in Paragraph 3 hereof, (E) neither Lender nor
its successors or assigns shall be liable under any warranty of construction
contained in the Lease or any implied warranty of construction, and if all
representations and warranties made herein by Tenant shall be true and correct
as of the date of such attornement; then, and in such event Tenant's leasehold
estate under the Lease shall not be terminated, Tenant's possession of the
Premises shall not be disturbed by Lender and Lender will accept the attornement
of Tenant.

      2. Notwithstanding anything to the contrary contained in the Lease, Tenant
hereby agrees that in the event of any act, omission or default by Landlord or
Landlord's agents, employees, contractors, licensees or invitees which would
give Tenant the right, either immediately or after the lapse of a period of
time, to terminate the Lease, or to claim a partial of total eviction, or to
reduce the rent payable thereunder or credit or offset any amounts against
future rents payable thereunder, Tenant will not exercise any such right (i)
until it has given written notice of such act, omission or default to Lender by
delivering notice of such act, omission or default, in accordance with Paragraph
8 hereof, and (ii) until a period of not less than sixty (60) days for remedying
such act, omission or default shall have elapsed following the giving of such
notice. Notwithstanding the foregoing, in the case of any default of Landlord
which cannot be cured within such sixty (60) day period, if Lender shall within
such period proceed promptly to cure the same (including such time as may be
necessary to acquire possession of the Premises if possession is necessary to
effect such cure) and thereafter shall prosecute the Curing of such default with
diligence, then the time within which such default may be cured by Lender shall
be extended for such period as may be necessary to complete the curing of the
same with diligence. Lender's cure of Landlord's default shall not be considered
an assumption by Lender of Landlord's other obligations under the Lease. Unless
Lender otherwise agrees in writing, Landlord shall remain solely liable to
perform Landlord's obligations under the Lease (but only to the extent required
by and subject to the limitation included with the Lease), both before and after
Lender's exercise of any right or remedy under this Agreement. If Lender or any
successor or assign becomes obligated to perform as Landlord under the Lease,
such person or entity will be released from those obligations when such person
or entity assigns, sells or otherwise transfers its interest in the Premises or
the Property.

      3. Without limitation of any of the provisions of the Lease, in the event
that Lender succeeds to the interest of Landlord or any successor to Landlord,
then subject to the provisions of this Agreement including, without limitation,
Paragraph 1 above, the Lease shall nevertheless continue in full force and
effect and Tenant shall and does hereby agree to attorn to and accept Lender and
to recognize Lender as its Landlord under the Lease for the then remaining
balance of the term thereof, and upon request of Lender, Tenant shall execute
and deliver to Lender an. agreement of attornment reasonably satisfactory to
Lender.

      4. If Lender succeeds to the interest of Landlord or any successor to
Landlord, in no event shall Lender have any liability for any act or omission of
any prior landlord under the Lease which occurs prior to the date Lender
succeeds to the rights of Landlord under the Lease, nor any liability for
claims, offsets or defenses which Tenant might have had against Landlord. In no
event shall Lender have any personal liability as successor to Landlord and
Tenant shall look only to the estate and property of Lender in the Land and the
Improvements for the satisfaction of Tenant's remedies for the collection of a
judgment (or other judicial process)



requiring the payment of money in the event of any default by Lender as Landlord
under the Lease, and no other property or assets, of Lender shall be subject to
levy, execution or other enforcement procedure for the satisfaction of Tenant's
remedies under or with respect to the Lease.

      5. Tenant agrees that no prepayment of rent or additional rent due under
the Lease of more than one month in advance, and no amendment, modification,
surrender or cancellation of the Lease, and no waiver or consent by Landlord
under the terms of the Lease, shall be binding upon or as against Lender, as
holder of the Deed of Trust, and as Landlord under the Lease if it succeeds to
that position, unless consented to in writing by Lender. In addition, and
notwithstanding anything to the contrary set forth in this Agreement, Tenant
agrees that Lender, as holder of the Deed of Trust, and as Landlord under the
Lease if it succeeds to that position, shall in no event have any liability for
the performance or completion of any initial work or installations or for any
loan or contribution or rent concession towards initial work, which are required
to be made by Landlord (A) under the Lease or under any related Lease documents
or (B) for any space which may hereafter become part of said Premises, and any
such requirement shall be inoperative in the event Lender succeeds to the
position of Landlord prior to the completion or performance thereof. Tenant
further agrees with Lender that Tenant will not voluntarily subordinate the
Lease to any lien or encumbrance without Lender's prior written consent.

      6. This Agreement may be executed in two or more counterparts, each of
which shall be deemed an original but all of which together shall constitute and
be construed as one and the same instrument.

      7. All remedies which Lender may have against Landlord provided herein, if
any, are cumulative and shall be in addition to any and all other rights and
remedies provided by law and by other agreements between Lender and Landlord or
others. If any party consists of multiple individuals or entities, each of same
shall be jointly and severally liable for the obligations of such party
hereunder.

      8. All notices to be given under this Agreement shall be in writing and
shall be deemed served upon receipt by the addressee if served personally or, if
mailed, upon the first to occur Of receipt of the refusal of delivery as shown
on a return receipt, after deposit in the United States Postal Service certified
mail, postage prepaid, addressed to the address of Landlord, Tenant or Lender
appearing below, or, if sent by telegram, when delivered by or refused upon
attempted delivery by the telegraph office. Such addresses may be changed by
notice given in the same manner. If any party consists of multiple individuals
or entities, then notice to any one of same shall be deemed notice to pay such
party.

Lender's Address:

Nomura Asset Capital Corporation
Two World Financial Center, Building B
New York, New York 10281-1198

Attn: Ms. Sheryl McAfee



Tenant's Address:

_______________________
_______________________
_______________________
_______________________

Attn:__________________

Landlord's Address:

_______________________
_______________________
_______________________
_______________________

Attn:__________________

      9. This Agreement shall be interpreted and construed in accordance with
and governed by the laws of the State of California.

      10. This Agreement shall apply to, bind and inure to the benefit of the
parties hereto and their respective successors and assigns. As used herein
"Lender" Shall include any subsequent holder of the Deed of Trust.

      11. Tenant acknowledges that Landlord has assigned to Lender its right,
title and interest in the Lease and to the rents, issues and profits of the
Property and the Property pursuant to the Deed of Trust, and that Landlord has
been granted the license to collect such rents provided no Event of Default has
occurred under, and as defined in, the Deed of Trust. Tenant agrees to pay all
rents and other amounts due under the Lease directly to Lender upon receipt of
written demand by Lender, and Landlord hereby consents thereto. The assignment
of the Lease to Lender, or the collection of rents by Lender pursuant to such
assignment, shall not obligate Lender to perform Landlord's obligations under
the Lease.

[NO FURTHER TEXT ON THIS PAGE]



      IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
as of the day and year first above written.

                              NOMURA ASSET CAPITAL CORPORATION, 
                              a Delaware corporation

                              By:_______________________________
                                 Name:
                                 Title:

                              [LANDLORD]

                              By:_______________________________

                              [TENANT]

                              By:_______________________________



STATE OF CALIFORNIA     )
                              ) ss.
COUNTY OF_______________)

      On _____________, 2000, before me, _________________ the undersigned, a
notary public in and for said state, personally appeared ____________________,
personally known to me (or proved to me on the basis of satisfactory evidence)
to be the person whose name is subscribed to the within instrument and
acknowledged to me that he/she executed the same in his/her authorized capacity,
and that by his/her signature on the instrument the person, or the entity upon
behalf of which the person acted, executed the instrument.

      WITNESS my hand and official seal.



                                    EXHIBIT G
                                       TO
                             MOFFETT PARK DRIVE LLC
                                    LEASE TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                 SIGNAGE EXHIBIT

                                (To be provided)



                                    EXHIBIT H
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                Guaranty of Lease
                             [Intentionally Omitted]



                                    EXHIBIT I
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                         HAZARDOUS MATERIALS DISCLOSURE

      Lessor has provided Lessee, and Lessee acknowledges that it has received
and pursuant to Section 17.22(b) of the Lease, reviewed same, a copy of each of
those certain documents entitled: (i)PHASE I, ENVIRONMENTAL SITE ASSESSMENT OF
THE PROPERTY LOCATED AT 1111 LOCKHEED MARTIN WAY SUNNYVALE, CALIFORNIA, Prepared
for: Lockheed Martin Corporation, Missiles and Space, Sunnyvale, California,
Prepared by: McLaren/Hart, Inc.; Alameda, California, April 22, 1999, Job No.
04.0018178.001.001; and (ii) PHASE II, ENVIRONMENTAL SITE ASSESSMENT, LOCKHEED
MARTIN MISSILES AND SPACE FACILITY, BUILDINGS 104 AND 105, Sunnyvale,
CALIFORNIA, Prepared for: The Jay Paul Company, San Francisco, California,
Prepared by: IRIS ENVIRONMENTAL, Oakland, California, October 4, 1999, Job No.
99-108-B.

                                       LESSEE

                                       ARIBA INC.
                                       a Delaware corporation

                                       By:____________________________
                                          ____________________________
                                            (Type or print name) 

                                       Its:__________________________

                                       By:____________________________
                                          ____________________________
                                            (Type or print name) 

                                       Its:__________________________


                                    EXHIBIT J
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California
                           [INTENTIONALLY LEFT BLANK]



                                    EXHIBIT K
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California
                           [INTENTIONALLY LEFT BLANK]




                                    EXHIBIT L
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                           [INTENTIONALLY LEFT BLANK]
                              RULES AND REGULATIONS

1. Lessee and Lessee's employees shall not in any way obstruct the sidewalks,
entry passages, pedestrian passageways, driveways, entrances and exits to the
Project or the Buildings, and they shall use the same only as passageways to and
from their respective work areas.

2. Any sash doors, sashes, windows, glass doors, lights and skylights that
reflect or admit light into any Building shall not be covered or obstructed by
the Lessee. Water closets, urinals and wash basins shall not be used for any
purpose other than those for which they were constructed, and no rubbish,
newspapers, food or other substance of any kind shall be thrown into them.
Lessee shall not mark, drive nails, screw or drill into, paint or in any way
deface the exterior walls, roof, foundations, bearing walls or pillars without
the prior written consent of Lessor, which consent may be withheld in Lessor's
sole discretion. The expense of repairing any breakage, stoppage or damage
resulting from a violation of this rule shall be borne by Lessee.

3. No awning or shade shall be affixed or installed over or in the windows or
the exterior of the Premises except with the consent of Lessor, which may be
withheld in Lessor's discretion.

4. No boring or cutting for wires shall be allowed, except with the consent of
Lessor, which consent may be withheld in Lessor's discretion.

5. Lessee shall not do anything in the Premises, or bring or keep anything
therein, which will in any way increase or tend to increase the risk of fire or
the rate of fire insurance or which Shall conflict with the



of fire or the rate of fire insurance or which shall conflict with the
regulations of the fire department or the law or with any insurance policy on
the Premises or any part thereof, or with any rules or regulations established
by any administrative body or official having jurisdiction, and it shall not use
any machinery therein, even though its installation may have been permitted,
which may cause any unreasonable noise, jar, or tremor to the floors or walls,
or which by its weight might injure the floors of the Premises.

6. Lessor may reasonably limit weight, size and position of all safes, fixtures
and other equipment used in the Premises. If Lessee shall require extra heavy
equipment, Lessee shall notify Lessor of such fact and shall pay the cost of
structural bracing to accommodate it. All damage done to the Premises or Project
by installing, removing or maintaining extra heavy equipment shall be repaired
at the expense of Lessee.

7. Lessee and Lessee's officers, agents and employees shall not make nor permit
any loud, unusual or improper noises nor interfere in any way with other Lessees
or those having business with them, nor bring into or keep within the Project
any animal or bird or any bicycle or other Vehicle, except such vehicle as
Lessor may from time to time permit.

8. No machinery of any kind will be allowed in the Premises without the written
consent of Lessor. This shall not apply, however, to customary office equipment
or trade fixtures or package handling equipment.

9. All freight must be moved into, within and out of the Project only during
such hours and according to such reasonable regulations as may be posted from
time to time by Lessor.

10. No aerial or satellite dish or similar device shall be erected on the roof
or exterior walls of the Premises, or on the grounds, without in each instance,
the written consent of Lessor. Any aerial so installed without such written
consent shall be subject to removal without notice at any time. Lessor may
withhold consent in its sole discretion.

11. All garbage, including wet garbage, refuse or trash shall be placed by the
Lessee in the receptacles appropriate for that purpose and only at locations
prescribed by the Lessor.



12. Lessee shall not burn any trash or garbage at any time in or about the
Premises or any area of the Project.

13. Lessee shall observe all security regulations issued by the Lessor and
comply with instructions and/or directions of the duly authorized security
personnel for the protection of the Project and all tenants therein.

14. Any requirements of the Lessee will be considered only upon written
application to Lessor at Lessor's address set forth in the Lease.

15. No waiver of any rule or regulation by Lessor shall be effective unless
expressed in writing and signed by Lessor or its authorized agent.

16. Lessor reserves the right to exclude or expel from the Project any person
who, in the judgment of Lessor, is intoxicated or under the influence of liquor
or drugs, or who shall in any manner do any act in violation of the law or the
rules and regulations of the Project.

17. Lessor reserves the right at any time to change or rescind any one or more
of these rules and regulations or make such other and further reasonable rules
and regulations as in Lessor's judgment may from time to time be necessary for
the operation, management, safety, care and cleanliness of the Project and the
Premises, and for the preservation of good order therein, as well as for the
convenience of other occupants and tenants of the Project. Lessor shall not be
responsible to Lessee or the any other person for the non-observance or
violation of the rules and regulations by any other tenant or other person.
Lessee shall be deemed to have read these rules and have agreed to abide by them
as a condition to its occupancy of the Premises.

18. Lessee shall abide by any additional rules or regulations which are ordered
or requested by any governmental or military authority.

19. In the event of any conflict between these rules and regulations, or any
further or modified rules and regulations from time to time issued by Lessor,
and the Lease provisions, the Lease provisions shall govern and control.

20. Lessor specifically reserves to itself or to any person or firm it selects,
(i) the right to place in and upon the Project, coin-operated machines for the



sale of cigarettes, candy and other merchandise or service, and (ii) the revenue
resulting therefrom.


                                    EXHIBIT M
                                       TO
                          MOFFETT PARK DRIVE LLC LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                           Moffett Park Drive TDM Plan



                           Moffett Park Office Project

                      Transportation Demand Management Plan

                                  Prepared for

                                Jay Paul Company
                                       and
                                City of Sunnyvale

                                  Prepared by:

                           Meyer, Mohaddes Associates
                                San Bruno, Calif.

                                February 22, 2000

                                TABLE OF CONTENTS

      Executive Summary                                        iii

I.    Project Description
      A. Project Overview & Site Map                             1
      B. Transit Services                                        2
      C. Bicycle Routes                                          4

II.   TDM Site Facilities and Amenities
      A. Light-Rail Station                                      5
      B. Preferential Carpool/Vanpool Parking                    5
      C. Bicycle Storage                                         5
      D. Showers and Clothing Lockers for Cyclocommuters         5
      E. Carpool/Vanpool/Shuttle Pickup Areas                    5
      F. On-Site Services and Amenities                          5

III.  Commuter Information and Marketing
      A. Ridematching Services                                   6
      B. Transit Information                                     6
      C. Cyclo-Commute Information                               6
      D. Special Events                                          6
      E. Promotional Materials                                   6
      F. Telecommute Assistance                                  6
      G. Alternative-Work-Schedule Assistance                    6

IV.   Commuter Services Operation
      A. Connection to Caltrain Station                          7
      B. Guaranteed-Ride-Home Service                            7

V.    Financial Incentives                                       8

VI.   Program Monitoring, Reporting and Assurance of Success
      A. Annual Commuter Survey                                  8
      B. Annual Report to City                                   8
      C. TDM Goal                                                8
      D. Achievement of TDM Goal                                 8

VII.  Summary and Concluding Comments                            9


                                       ii

                              - Executive Summary -

                      Moffett Park Office Project TDM Plan

A comprehensive TDM Program will be implemented for the Moffett Park Office
project to meet the Transportation Demand Management (TDM) Goal-that at least
15% of all on-site employees are commuting via some means other than driving
alone. The overall strategy of the Moffett Park TDM Program is (1) Provide
personalized information about commute options, (2) offer incentives, (3) remove
barriers to use of commute alternatives, and (4) maintain awareness of the TDM
Program. The project will be occupied by a single tenant, who will carry out the
ongoing TDM Program activities. If necessary, this initial program will be
expanded or revised in order to achieve the TDM Goal in the most cost-effective
manner.

I. Project Description

The proposed project, located near Moffett Park Drive and Lockheed Way, will
replace an existing Lockheed-Martin research and development facility containing
approx. 456,400 square feet, with an office-park campus containing 636,562
square feet in four buildings, plus 15,000 square feet-in a separate Fitness
Center. With the new Tasman West light-rail line and station immediately
adjacent, the site will enjoy excellent transit service.

II.   Site Facilities and Amenities

The project design will include a number of features and amenities to encourage
and support the use of alternative commute modes. This will include the
following physical elements:

A.    Light-Rail Station - a new station will be constructed immediately
      adjacent to the project site, with convenient pedestrian access to the
      project buildings. In addition to serving the employees at the Moffett
      Park Office Project, the new station will serve roughly 4,000 employees at
      nearby sites.
B.    Designated Carpool/Vanpool Parking - Minimum of 10% of all spaces; located
      convenient to building entrance(s). These spaces will be designed for
      full-sized vehicles. Additional spaces will be designated when current
      spaces are fully utilized. Users must obtain a carpool parking permit
C.    Bicycle storage - For 109 bicycles total, consisting of 82 bicycle lockers
      plus 27 bicycle racks. This is consistent with VTA Bicycle Guidelines.
D.    Showers and Clothing Lockers - At least 15 showers (10 men, 5 women), plus
      82 clothing lockers (55 men, 27 women) guaranteed to cyclocommuters. Each
      building will contain showers and lockers, but exact locations and numbers
      will be determined in the final design, to best meet the needs of the
      initial tenant.
E.    Carpool/Vanpool/Shuttle Pickup Area - a convenient and safe area for
      boarding and discharging passengers from carpools, vanpools, and shuttles.
F.    On-Site Amenities - Pedestrian/bike circulation links to adjacent
      properties, perimeter walking and jogging paths, plus meditation gardens
      and seating areas. a restaurant/cafeteria and a fitness center will also
      be included in the project, and will be built as a tenant improvement.

III.  Commuter Information & Marketing

Information and marketing services will be offered to tenants and their
employees. This will include certain services to employees, and other services
to the tenants (employers). All tenants will be required to assist in the
delivery of these services to their employees who wish to participate. Services
to employees will include:


                                      iii


A.    Ride-matching - Personalized carpool matching and vanpool information for
      employees. This will either be performed on-site or off-site (e.g. by
      RIDES).
B:    Transit Information - General transit info (maps, schedules) for nearby
      service, personalized transit info (routes & schedules) on request, plus
      information on how to purchase transit passes via the Internet and by 
      mail.
C.    Cyclo-Commute Information - General bike info (route maps, tips for new
      cyclists, references to local bike organizations), plus "bike-buddy"
      matching upon request.
D.    Special Events - One or more on-site events per year promoting carpools,
      vanpools, transit, bicycling, and/or other commuting options.
E.    Promotional Materials - This will consist of posters, flyers, brochures or
      other material describing TDM opportunities, distributed via bulletin
      boards, paycheck stuffers, email, or other means.

The following services will also be provided to tenants, upon their request:

F.    Alternative Work Schedule Assistance - Guidance to tenants wishing to
      establish flextime or compressed-work-week programs for their
      employees.
G.    Telecommute Assistance - Guidance to tenants wishing to establish 
      telecommuting programs for their employees.

IV.   Commuter Service Operation

To support the incentives and information elements of the TDM Program, a number
of ongoing services will be provided to commuters at the site:

A.    Connection to Caltrain Station - The project will contribute to the
      operating costs of the Moffett Park Area Shuttle, which currently offers 5
      runs in the morning and 6 runs in the evening to/from the Sunnyvale
      Caltrain Station. With the completion of the LRT station at Moffett Park,
      improved access to Caltrain will be available via a transfer at the
      Mountain View station to the LRT. At that time, the shuttle subsidy may be
      discontinued, in order to shift those trips onto the LRT line.
B.    Guaranteed Ride Home Service - GRH services will be provided either by VTA
      or directly via subsidized taxi rides or rental cars. Reasonable usage
      limitations on number of trips per month or year will apply to prevent
      abuse.

V. Financial Incentives

All tenants will be required to either purchase a VTA Eco Pass for bus and light
rail for each full-time employee, or purchase a monthly pass (or equivalent) at
a cost of up to $65 per month for each employee who commutes via public
transportation on a substantially full-time basis. The tenant may elect to offer
both incentives.

VI.   Program Monitoring, Reporting and Assurance of Success

Management and monitoring of the TDM Program will include the following:

A.    Annual Commuter Survey - A survey of tenants' employees will be conducted
      yearly, using City-approved methodology, to measure the employees on-site
      who are commuting via alternative modes.
B.    Annual TDM Report to City - A report will be prepared and submitted to
      City each year, presenting the results of the Commuter Survey and
      summarizing TDM Program activities.
C.    TDM Goal - The Applicant has established a TDM Goal for this project, that
      at least 15% of all on-site employees travel to work by some means other
      than driving alone.
D.    Achievement of TDM Goal - The Applicant understands that provisions will
      be included in the Development Agreement defining remedies for failure to
      attain the TDM Goal, and that such remedies may include financial
      penalties proportional to any shortfall.


                                       iv


I. Project Description

A. Project Overview

The proposed project site is located near the intersection of Moffett Park Drive
and Lockheed Way, in the City of Sunnyvale. Please see Figure 1 for a map of the
project location The site now contains a Lockheed-Martin research and
development facility totaling approx. 456,400 square feet of space. The proposed
development will remove the existing facilities and construct an attractive,
office-park campus -consisting of four buildings containing 636,562 square feet
of space, plus a separate Fitness Center containing 15,000 square feet. Please
see Figure 2 for a preliminary Site Plan. The primary uses of this space will be
general office, intended to support the vibrant local economy that is uniquely
characterized by computer, software, and internet-related enterprises.

                            [Figure 1. Location Map]


                                       1

                         Figure 2. Preliminary Site Plan


                                       2


B. Transit Services

1. Light-Rail Transit - With the opening of the Tasman West light-rail line
   extension, plus the new station immediately adjacent to the project site (and
   with convenient pedestrian access to the project buildings), the site will
   offer excellent light-rail transit service to the site's employees and
   visitors.
2. Commuter Rail - The Sunnyvale Caltrain Station at Evelyn & Francis, offers
   all-day commuter-rail service to points along the peninsula between San Jose
   and San Francisco, plus commute-period service between Gilroy and San Jose.
   The Sunnyvale station includes automobile parking and bicycle lockers, plus
   is wheelchair-accessible. This Caltrain station is less than two miles from
   the site, and may be reached via a shuttle service that currently makes five
   trips in the morning and six trips in the afternoon. With the completion of
   the LRT station adjacent to the project, convenient access to the Caltrain
   station in Mountain View will be provided via the Tasman West line.
3. Bus Service - a number of VTA bus routes serve the project site, either
   adjacent or within walking distance. These bus routes are shown in Figure 3,
   along with the new light-rail line.

                 [Figure 3. VTA Transit Service Near Project Site -- Map]


                                       3

C. Bicycle Routes

Several bicycle routes are available in the vicinity of the project site. These
routes are shown in Figure 4.

                [Figure 4. Bicycle Routes Near Project Site -- Map]


                                       4


II. Site Facilities and Amenities

The physical infrastructure and environment can have a substantial impact on the
success of a TDM Program, by making it easier (or harder) for employees to use
alternative transportation modes. Being a new development, the Moffett Park
Office Project offers the opportunity to optimize the elements of the physical
environment to fully support those who choose not to drive alone to work. Thus,
the project design will include a number of features and amenities to encourage
and support the use of alternative commute modes. This will include:

A. Light-Rail Station - To encourage transit usage by employees and visitors to
   the site, a new station on the Tasman West light-rail line will be
   constructed as part of the proposed project. The new station will be located
   on Moffett Park Drive, immediately adjacent to the project site. The site
   design will include convenient pedestrian access from the new station to the
   project buildings. In addition to serving the employees at the Moffett Park
   Office Project, the new station will also serve roughly 4,000 employees at
   nearby sites.

B. Designated Carpool/Vanpool Parking - This will serve as a convenience
   incentive to carpoolers and vanpoolers, and it will also be a visible
   reminder to all employees of the benefits of ridesharing. A minimum of 10% of
   all on-site parking spaces will be designated for exclusive use of carpools
   and vanpools. These spaces will be located convenient and visible to the
   building entrances, and will be designed for full-sized vehicles to make it
   easier to enter/exit the carpool and vanpool vehicles. Additional
   preferential spaces will be designated when the current spaces are fully
   utilized. Users of these spaces will be required to obtain a carpool or
   vanpool parking permit.

C. Bicycle storage - A concern among many bicyclists is the fear of theft of
   their expensive bicycles. Secure bicycle storage facilities can largely
   eliminate this deterrent to using their bikes to commute. The project design
   will include 109 bicycle spaces -- 82 enclosed lockers for individual
   bicycles plus 27 racks. The amount of bike storage is consistent with the VTA
   Bicycle Guidelines.

D. Showers and Clothing Lockers - Riding a bike to work can be vigorous
   exercise, and many cyclo-commuters work up a sweat. To insure workplace
   harmony, at least 10 showers for men and at least 5 for women, plus 55
   clothes lockers for men and 27 for women, will be available to full-time
   cyclocommuters. Each building and the Fitness Center will contain some of
   these 15 showers and 82 clothes lockers, but the exact locations and numbers
   will be determined in the final design, to best meet the needs of the initial
   tenant.

E. Carpool/Vanpool/Shuttle Pickup Area - Some people are concerned about waiting
   for a carpool or vanpool in an unsafe place or one that is not sheltered from
   adverse weather conditions. To allay this fear, a convenient and safe area
   will be provided on the site for boarding and discharging passengers from
   carpools, vanpools, and shuttles.

F. On-Site Amenities - Some commuters find it difficult to leave their car at
   home because they may need it at work for lunch trips or other daytime travel
   to meet personal or business needs. To reduce this concern, the site design
   will incorporate pedestrian and bicycle circulation links to adjacent
   properties, pleasant walking/jogging paths at the perimeter of the property,
   plus attractive meditation gardens and seating areas. A restaurant/cafeteria
   and a fitness center will be developed as a part of the project, and will be
   built as a tenant improvement.


                                       5


III.  Commuter Information & Marketing

To encourage the maximum use of commute alternatives, commuters must be fully
aware of all travel options available for their trip to/from work. To insure
that they are fully aware, the TDM Program must first gain their interest in
ridesharing, and then provide high-quality information about that option in a
timely and personalized manner. The TDM Program will deliver a range of
information and marketing services to tenants and employees. This will include
certain services targeted to employees, and other services to the tenants
(employers). All tenants will be required to assist in the delivery of these
services to all of their employees who wish to participate. Services to
employees will include the following:

A. Ride-matching - This will include personalized carpool-matching and vanpool
   information for employees. Carpool-matching information will inform commuters
   about other people who live and work nearby and have similar work schedules.
   Vanpool information will inform commuters about any existing vanpools that
   they could use to get to work. This information function may be performed
   on-site via electronic or manual means, or may be performed off-site (for
   example, by RIDES, the regional ridesharing agency).

B. Transit Information - This will include general transit information (maps and
   timetables) for all transit routes near the project site, plus personalized
   transit info (specific routes, schedules and fares) upon request by any
   employee on-site for his/her commute trip. It will also include information
   and assistance on how to purchase transit passes via the Internet and Postal
   Service.

C. Cyclo-Commute Information - This will include general bike information (route
   maps, tips for new cyclists, referrals to local bike organizations), plus
   personalized assistance ("bike-buddy" matching) upon request.

D. Promotional Events - Research has shown that many commuters decide to adopt
   an alternative mode in response to a specific occurrence (e.g. a car
   breakdown). Promotional activities (events, materials, etc.) are important to
   insure a high awareness of available commute options when that event occurs.
   To maintain awareness of commute options and resources, the TDM Program will
   include one or more on-site events each year promoting carpools, vanpools,
   transit, bicycling, and/or other commuting options.

E. Promotional Materials - To maintain awareness between the periodic
   promotional events, the TDM Program will maintain a continuing presence of
   promotional materials. This will consist of posters, flyers, brochures or
   other material describing TDM opportunities, distributed via bulletin boards,
   paycheck stuffers, email, or other means.

Commuter Information and Marketing activities will also include the following
services to tenants, upon their request:

F. Alternative-Work-Schedule Assistance - This will consist of guidance and
   assistance to tenants who wish to establish flextime or compressed-work-week
   programs for their employees. The TDM Program will supply information
   (publications, websites, etc.), and referrals to specialists (organizations,
   consultants, etc.):

G. Telecommute Assistance - As before, this will consist of guidance and
   assistance to tenants who wish to establish telecommute/telework programs for
   their employees. The TDM Program will supply information resources, plus
   referrals to appropriate specialists, if desired.


                                       6


IV.   Commuter Services Operation

To support the incentives and information elements of the TDM Program, and to
remove barriers to ridesharing, a number of operational services will be
provided to commuters at the site:

A  Connection to Caltrain Station - The project will contribute to the operating
   Costs of the Moffett Park Area Shuttle, which currently offers 5 runs in the
   morning and 6 runs in the evening to/from the Sunnyvale Caltrain Station. A
   map of the Current route is shown in Figure 5. With the completion of the LRT
   station adjacent to the project, convenient access to Caltrain will be
   provided Via platform-to-platform transfer at the Mountain View Caltrain
   station to the Tasman West LRT line on which the new station is located. At
   that time, the shuffle subsidy may be discontinued, in order to shift those
   trips off the local roadways and onto the light-rail service.

              [Figure 5. Route of Moffett Park Area Shuttle -- Map]

B. Guaranteed Ride Home Service - Research on barriers to ridesharing has
   revealed that many potential users of commute alternatives are prevented from
   doing so because they fear that they would be stranded at work in case of a
   daytime emergency or unexpected overtime work. Guaranteed-Ride-Home (GRH)
   Services are a proven way to effectively respond to this concern by providing
   a means to travel home in those instances. These GRH services will be
   provided either by VTA (as part of the Eco Pass program, or directly via
   subsidized taxi rides or rental cars. To prevent abuse, reasonable
   limitations on number of trips per month or year may apply.


                                       7


V. Financial Incentives

Financial incentives have been shown to be strong motivators for use of public
transit for many commuters. Undercurrent federal law, it is relatively easy for
employers to subsidize the use of public transit for their employee's travel to
work, and these subsidies are exempt from federal income taxes if the monthly
subsidy does not exceed $65. It is much more difficult to subsidize the use of
carpools, bicycles, and other commute alternatives without incurring federal
income tax liabilities.

To take maximum advantage of the tax-exempt, transit subsidies now available,
all tenants will be required to either: 

(1)   purchase a VTA Eco Pass for each full-time employee, or
(2)   purchase a monthly pass or equivalent ticket books at a cost of up to $65
      per month for each employee who travels to work via public transportation
      on a full-time basis.

The tenant may elect to do both.

The Santa Clara Valley Transportation Authority (VTA) Eco Pass program offers
unlimited use on all VTA buses and light rail lines, seven days a week. The $65
per month transit subsidy could be applied to any public transit service in the
Bay area, and to qualified vanpool services. In general, these transit subsidies
would not be subject to federal income taxes, yielding an equivalent after-tax
benefit of almost $100 per month to transit users.

VI.   Program Monitoring, Reporting and Assurance of Success

The effectiveness of the Moffett Park Office Project TDM Program will be
regularly measured and documented, to assure achievement of the City's TDM Goal.
The following procedures will be used:

A. Annual Commuter Survey - A survey of tenant's employees will be conducted
   yearly to measure the number of on-site employees who are commuting via
   alternative modes. To insure accuracy, the survey will utilize City-approved
   methodology and will be subject to audit by the City. This will serve as a
   standardized "yardstick" by which the success of the TDM Program can be
   measured.

B. Annual TDM Report to City - A TDM Report will be prepared and submitted to
   the City each year. The TDM Report will present the results of the Commuter
   Survey and also summarize current TDM Program activities. It will also
   identify changes to the TDM Program to be made during the next year.

C. TDM Goal - The Applicant has defined a TDM Goal for the Moffett Park Office
   Project - that at least 15% of all employees who regularly work at the site
   are commuting via some means other than driving alone. This Goal includes
   proportional credits for those employees who avoid driving as a result of
   compressed work schedules (e.g. 4/40, 9/80) and part-time telecommuting by
   those who normally work at the site.

D. Achievement of TDM Goal - The Applicant understands that provisions will be
   included in the development agreement defining remedies for failure to attain
   the TDM Goal, and that these remedies may include financial penalties
   proportional to any shortfall. The Applicant reserves the right to expand or
   revise this initial TDM program, if necessary, in order to achieve the TDM
   Goal in the most cost-effective manner.


                                       8


VII. Summary and Concluding Comments

This TDM Plan proposes a comprehensive set of TDM actions that will be
implemented for the Moffett Park Office project to meet the TDM Goal - that at
least 15% of all on-site employees are commuting via some means other than
driving alone. The overall strategy of the Moffett Park TDM Program is:

      o Provide full information about commute options, 
      o Offer incentives to those who use commute alternatives, 
      o Remove barriers to use of these commute alternatives, and 
      o Maintain high awareness of the TDM Program by employees at the site.

The Moffett Park Office Project will be occupied by a single tenant. This tenant
will operate and manage the TDM Program, and will deliver the ongoing services
described in this TDM Plan. The TDM Program Manager will also cooperate with the
TDM programs of nearby employers to maximize ridesharing opportunities.

The proposed TDM Program consists of a balanced set of measures, including: 

(1) Site design (facilities and amenities) that reduce auto dependency, 
(2) Information about the major commute alternatives available, 
(3) Operation of transportation services to increase the attractiveness of 
    transit and ridesharing,
(4) Financial incentives to encourage the use of public transit, and 
(5) Program monitoring, reporting and remedial measures to assure success.


                                       9


                                    EXHIBIT N
                                       TO
                             MOFFETT PARK DRIVE LLC
                                      LEASE
                                       TO
                                   ARIBA, INC.
                                  FOR PREMISES
                                       at
                            1111 Lockheed Martin Way
                              Sunnyvale, California

                                Adjacent Project
                                 (See Attached)




                                [LOCKHEED MARTIN

                      LOCKHEED MARTIN MISSILES & SPACE CO.
                              SUNNYVALE, CALIFORNIA
                      PRELIMINARY LOT LINE ADJUSTMENT MAP]


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