F5 NETWORKS INC
10-Q, EX-10.1, 2000-08-10
COMPUTER INTEGRATED SYSTEMS DESIGN
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<PAGE>   1
                                                                    EXHIBIT 10.1



                                401 ELLIOTT WEST


                              AMENDED AND RESTATED
                             OFFICE LEASE AGREEMENT


                                     Between


                              401 Elliott West LLC





                                       and




                                F5 Networks, Inc.
<PAGE>   2

        This Amended and Restated Office Lease Agreement reflects the agreements
of the Parties as set forth in that certain Lease dated July 31, 1999 for
premises located at 401 Elliott West, Seattle, Washington, as amended by Lease
Amendment I dated October 26, 1999, and as further amended by Lease Amendment II
dated April 3, 2000.


1.      BASIC LEASE TERMS

        Section 1 represents a summary of the basic terms of this Office Space
Lease for 401 Elliott West.

<TABLE>
<S>            <C>                                                <C>
        a.     DATE OF LEASE:                                     July 31, 1999

        b.     TENANT:                                            F5 Networks, Inc.

               ADDRESS OF LEASED PREMISES:                        401 Elliott Avenue West
                                                                  Seattle, WA 98119


               ADDRESS FOR BILLING AND NOTICES:                   Prior to Commencement Date:

                                                                  200 First Avenue West, Suite 500
                                                                  Seattle, WA 98119
                                                                  Phone: (206) 505 0800
                                                                  Fax:  (206) 505 0897
                                                                  Attn: Joann Reiter, General Counsel

                                                                  Same as above except the address shall be the same
                                                                  as Premises after commencement of the
                                                                  Lease.

        c.     LANDLORD:                                          401 Elliott West L.L.C.

               ADDRESS FOR NOTICES:                               c/o Koehler McFadyen & Company
                                                                  1601 Fifth Avenue, Suite 2210
                                                                  Seattle, WA  98101
                                                                  Phone: (206) 682 2680
                                                                  Fax:  (206) 467 5975
                                                                  Attn: Steve Koehler

                                                                  or such other place as
                                                                  Landlord may from time to time
                                                                  designate by notice to Tenant

        d.     PREMISES AREA:                                     84,765 rentable square feet,
                                                                  Floors 1 through 4 of Building Two

                                                                  110,111 rentable square feet,
                                                                  Floors 1 through 4 of Building Three

        e.     BUILDING AREA OF BUILDING TWO:                     85,446 rentable square feet
               TENANT'S PERCENTAGE OF                             99.20%
               BUILDING TWO:

               BUILDING AREA OF BUILDING THREE:                   110,111 rentable square feet
               TENANT'S PERCENTAGE OF                             100%
               BUILDING THREE:

        f.     PROJECT AREA:                                      299,643 rentable square feet
               TENANT'S PERCENTAGE OF PROJECT:                    65.04%

        g.     TERM OF LEASE:                                     This Lease shall commence on July 25, 2000 as it
                                                                  relates to all of Building Two, September 1, 2000 as it
                                                                  relates  to  the  first  floor  of  Building  Three,  and
                                                                  October 1, 2000 as it relates to floors 2 through 4 of
                                                                  Building Three, or such earlier or later dates as may be
                                                                  provided in Section 3 (the "Commencement Dates")
                                                                  and shall terminate on the last day of the one hundred
                                                                  and forty-fourth (144th) full calendar month after the
                                                                  Commencement  Date  for  the  Premises  in  Building
                                                                  Two.  Landlord shall use reasonable efforts to obtain
                                                                  early occupancy of the first floor of Building Three
                                                                  under  a  certificate  of  occupancy,  or  temporary
                                                                  certificate of occupancy, so that Tenant can occupy
                                                                  the first floor of Building Three as close as possible to
                                                                  the Commencement Date of Building Two.
</TABLE>


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<PAGE>   3

<TABLE>
<S>            <C>                                                <C>
        h.     BASE MONTHLY RENT:                                 $167,764.06 Building Two
                                                                  $214,818.75 Building Two + Floor 1, Building Three
                                                                  $394,074.89 Building Two and Building Three

        i.     PARKING:                                           Initial Monthly Charge of $100.00 per month for each
                                                                  Parking Permit.

                                                                  Number of parking permits allocated to Tenant: 370
                                                                  spaces.

        j.     RENT ADJUSTMENT(S):                                   MONTHS         BASE MONTHLY RENT
                                                                     ------         -----------------
                                                                    61 - 72             $413,176.92
                                                                    73 - 84             $423,691.84
                                                                    85 - 96             $434,206.76
                                                                    97 - 108            $444,721.68
                                                                   109 - 144            $455,236.58

        k.     ADDITIONAL RENT - ESTIMATED INITIAL
               TENANT'S SHARE OF EXPENSES:                        $ 47,680.31        Building Two
                                                                  $ 61,053.75        Building Two + Floor 1, Building
                                                                                     Three
                                                                  $109,617.75        Building Two and Building Three

        l.     SECURITY DEPOSIT:                                  $6,000,000 in the form of a Letter of Credit as further
                                                                  described in Section 6 and Exhibit H.

        m.     NON-REFUNDABLE CLEANING FEE                        N/A

        n.     PREPAID RENT                                       N/A

        o.     TENANT'S USE OF PREMISES:                          General  Purpose  R&D  Office  with,  Shipping/Light
                                                                  Manufacturing Facility & Storage Space on the First
                                                                  Floor of Building Three

        p.     BROKERS:                                           Douglas Hanafin, Washington Partners, Inc.
               TO BE PAID BY:                                     Landlord

        q.     GUARANTOR(S):                                      N/A

        r.     ADDITIONAL TERMS:                                  Sections 29 to 42

        s.     EXHIBIT(S):                      Exhibit A -       The Premises
                                                Exhibit B -       Tenant's Buildings and the Project
                                                Exhibit C -       Building Shell and Core Outline Specifications
                                                Exhibit D -       Signage Criteria
                                                Exhibit E -       Janitorial Specifications
                                                Exhibit F -       Tenant Work Letter
                                                Exhibit G -       [intentionally omitted]
                                                Exhibit H -       Form of Letter of Credit
</TABLE>


                                       3
<PAGE>   4

2.      PREMISES/COMMON AREAS/PROJECT.

        a.      PREMISES. Landlord leases to Tenant the premises described in
                Section 1 and in Exhibit A (the "Premises"), located in the
                buildings described on Exhibit B. The buildings are part of a
                larger, multi-building development shown on Exhibit B (the
                "Project"). As used herein, Buildings Two and Three may be
                referred to as "Tenant's Buildings", and all buildings in the
                Project are referred to collectively as the "Buildings"). Upon
                completion of the Tenant Improvements to the Premises, Landlord
                shall cause the rentable square footage of the Premises to be
                measured by Landlord's architect using the BOMA American
                National Standard Institute Publication, ANSI Z65.1-1996
                standards (the "Rentable Square Footage"), which measurement
                shall govern with respect to the Premises Area of Section 1(d).
                Tenant shall have the right to have a Washington-licensed
                surveyor approved by Landlord and jointly responsible to
                Landlord and Tenant verify the Premises Net Rentable Area
                determined by Landlord's Architect, if it does so within twenty
                (20) days after receipt of the notice from Landlord's Architect.
                If based on such verification Tenant disagrees with the Net
                Rentable Area determined by Landlord's Architect it shall advise
                Landlord and its Architect of the deviation within ten (10) days
                thereafter or be deemed to have accepted Landlord's Architect's
                determination. If Tenant gives a timely notification of
                disagreement, then the parties shall jointly select a
                Washington-licensed surveyor to review the calculations of
                Landlord's architect and the Tenant selected surveyor and make
                the determination of Premises Net Rentable Area, which
                determination shall be final and binding on the parties.
                Landlord shall cause each building within the Project to be
                similarly measured for the purposes of Sections 1(e) and 1(f)
                upon completion of the interior improvements of such
                building(s). Each building shall be deemed added to the Project
                for the purposes of such computation upon the completion of the
                Building Shell and Core improvements, as defined in Exhibit C,
                to such building and the computations of Section 1, if delayed
                pending final measurement of Rentable Square Footage, shall be
                deemed retroactive to such date.

        b.      COMMON AREAS. As used in this Lease, "Common Areas" shall mean
                all portions of the Project not leased or demised for lease to
                specific tenants. During the Lease Term, Tenant and its
                licensees, invitees, customers and employees shall have the
                non-exclusive right to use the public portions of the Common
                Areas, including all parking areas, landscaped areas, entrances,
                lobbies, elevators, stairs, corridors, and public restrooms in
                common with Landlord, other Project tenants and their respective
                licensees, invitees, customers and employees. Landlord shall be
                entitled to create limited Common Areas within specified
                Buildings for exclusive use of the tenants within such
                Buildings. Landlord shall at all times have exclusive control
                and management of the Common Areas and no diminution thereof
                shall be deemed a constructive or actual eviction or entitle
                Tenant to compensation or a reduction or abatement of rent.
                Landlord in its discretion may increase, decrease or change the
                number, locations and dimensions of any Common Areas and other
                improvements shown on Exhibit B, and/or designate such areas
                limited Common Areas assigned to particular buildings within the
                Project.

        c.      PROJECT. Landlord reserves the right in its sole discretion to
                modify or alter the configuration or number of buildings in the
                Project, so long as such modification or alteration does not
                materially modify or alter Tenant's Premises and provided only
                that upon such modification or alteration, the Project Area as
                set forth in Section 1(e) shall be adjusted to reflect such
                modification or alteration using the BOMA American National
                Standard Institute Publication, ANSI Z65.1-1996.

3.      TERM. For the purposes of calculating Commencement Date and effects of
        construction delay under this Section 3, all of Building Two is referred
        to as "Phase I", Floor 1 of Building Three is referred to as "Phase II";
        and Floors 2, 3 and 4 of Building Three are referred to as "Phase III".
        The Commencement Dates listed in Section 1 of this Lease for Phases I,
        II and III represent an estimate of the actual Commencement Dates. The
        actual Commencement Dates for each such Phase shall be the first to
        occur of the following events: (i) the date Tenant has substantially
        commenced the use and occupancy of that Phase or any portion thereof for
        purposes other than completion of the Tenant Work (as defined in Exhibit
        F), or (ii) one hundred twenty (120) days (the "Tenant Work Period")
        after the Delivery Date for that Phase as defined in Exhibit F. The
        scheduled Delivery Date for all of Building Two is March 25, 2000 and
        for all of Building Three is May 31, 2000. As used herein, "Unexcused
        Delay" means the failure to meet an applicable deadline when caused by
        delays other than Tenant Delay or Force Majeure. "Day(s) of Unexcused
        Delay" means the number of days of delay past the applicable deadline
        caused by Unexcused Delay (excluding the effect of Tenant Delay or Force
        Majeure).

        The Tenant Work Period shall be extended by the amount of any Unexcused
        Delay. If on September 25, 2000 with respect to all of Building Two, and
        December 1, 2000 with respect to all of Building Three, as a result of
        Unexcused Delay either (w) the Tenant Work is not yet substantially
        complete or (x) Tenant cannot occupy the Premises because the condition
        of the Building Shell and Core prevents issuance of such building permit
        sign offs as are necessary for beneficial occupancy of the Premises,
        then in addition to any extension of the Tenant Work Period as specified
        above, Tenant shall receive a credit against Base Rent that first
        becomes due under this Lease for the affected building, in an amount
        equal to one (1) day of Base Rent for each such Day of Unexcused Delay.
        If, on November 25, 2000 with respect to all of Building Two, and
        February 1, 2001, with respect to all of Building Three, as a result of
        Unexcused Delay either (y) the Tenant Work is not yet substantially
        complete or (z) Tenant cannot occupy the Premises because the condition
        of the Building Shell and Core prevents issuance of such building permit
        sign offs as are necessary for beneficial occupancy of the Premises, and
        Landlord does not substantially complete the Building Shell and Core so
        that (subject to the completion of the Tenant Work), building permit
        sign offs can be issued allowing Tenant to use and occupy the Premises
        for its intended purposes within thirty (30) days after written notice
        from Tenant of Tenant's intention to terminate this Lease as provided in
        this sentence, then



                                       4
<PAGE>   5

        Tenant may terminate this Lease with respect to the affected building by
        written notice given to Landlord at any time after the end of such
        thirty (30) day period and prior to the date the Building Shell and Core
        for such building is substantially complete. If the Commencement Date
        for either building is later than the estimated Commencement Date
        specified in Section 1 above, then, except as otherwise provided in this
        Section 3, this Lease shall not be void or voidable and Landlord shall
        not be liable to Tenant for such delay. Following the Commencement Date
        for each building, Landlord shall confirm such date to Tenant in
        writing. Any dispute between Landlord and Tenant with respect to the
        terms and application of this Section 3 and Exhibits C and F attached
        shall be subject to binding arbitration in accordance with Section 39 of
        this Lease. All provisions of this Lease, other than those relating to
        the commencement of the Lease Term, the payment of Base Rent and
        Additional Rent, shall become effective on the date Tenant or its
        contractor or employees are first present on the Premises for
        construction, installation, move-in or other purposes.

4.      RENT

        a.      BASE MONTHLY RENT. Tenant shall pay Landlord monthly base rent
                in the initial amount in Section 1 which shall be payable
                monthly in advance on the first day of each and every calendar
                month of the Term of the Lease ("Base Monthly Rent") provided,
                however, the first month's Base Monthly Rent and Tenant's Share
                of Expenses, including any adjustments for Rent Abatement as
                described in Section 30 below, is due and payable, with respect
                to Building Two, upon the earlier occurrence of (a) February 1,
                2000 or (b) the Commencement Date of Building Two and with
                respect to Building Three, upon the earlier occurrence of (x)
                seven (7) business days after mutual execution of this Amended
                and Restated Lease or (y) the Commencement Date of Building
                Three.

                For purposes of Section 467 of the Internal Revenue Code, the
                parties to this Lease hereby agree to allocate the stated Rents,
                provided herein, to the periods which correspond to the actual
                Rent payments as provided under the terms and conditions of this
                agreement.

        b.      RENT ADJUSTMENT.

                1)      Base Monthly Rent shall be increased periodically to the
                        amounts and at the times set forth in Section 1(j), and
                        the months referenced therein shall be lease months
                        calculated in reference to the Commencement Date of
                        Phase I (Building Two).

        c.      EXPENSES. The purpose of this Section 4(c) is to ensure that
                Tenant bears its proportionate share of all actual Expenses
                related to the use, maintenance, ownership, repair or
                replacement, and insurance of the Tenant's Buildings and
                associated Common Areas. Accordingly, beginning on the
                Commencement Dates per Section 1(g.) above, Tenant shall each
                month pay to Landlord one-twelfth (1/12) of Tenant's Share of
                Expenses related to Tenant's Buildings and Associated Common
                Areas. As used in this Lease, "Tenant's Share" shall mean the
                Premises Area, as defined in Section 1(d), divided by the total
                Building Area then under lease to Tenant, as defined in Section
                1(e), and "Tenant's Share of Expenses" shall mean total Expenses
                for Tenant's Buildings and associated Common Areas, multiplied
                by Tenant's Share, provided that Landlord may specially allocate
                individual expenses where and in the manner necessary, in
                Landlord's discretion, to appropriately reflect the consumption
                of the expense or service. For example where some but not all
                premises in a building have HVAC, Landlord may reallocate
                Building Expenses for HVAC to all premises utilizing HVAC to be
                apportioned on a per square foot basis, or could allocate to
                each premises utilizing HVAC the cost of maintaining that
                space's individual unit. In the event the average occupancy
                level of a building or the Project for any year is less than
                ninety five percent (95%), the actual Expenses for the building
                or the Project for such year shall be proportionately adjusted
                to reflect those costs which Landlord estimates would have been
                incurred, had the building or Project, as applicable, been
                ninety five percent (95%) occupied during such year, such that
                Tenant's Share of Expenses more accurately reflects Tenant's
                actual usage. Tenant's Buildings are part of a larger,
                multi-building project described on Exhibit B hereto. In the
                event any Expenses are billed on a multi-building basis,
                Tenant's Share of such Expenses shall be charged based on the
                ratio of the Premises Area, as defined in Section 1(d) divided
                by the Project Area, defined in Section 1(f). The intent of the
                parties is to make rental payable by Tenant and other tenants in
                the Project absolutely net to Landlord assuming at least 95%
                occupancy, except for items expressly excluded in Section
                4(c)(1)(f).

                1)      EXPENSES DEFINED. The term "Expenses" shall mean all
                        costs and expenses of the ownership, operation,
                        maintenance, repair or replacement, and insurance of the
                        Project (allocated on a building-by-building basis, to
                        the extent so provided above), including without
                        limitation, the following costs:

                        (a)     All supplies, materials, labor, equipment, and
                                utilities used in or related to the operation
                                and maintenance of the Project,

                        (b)     All maintenance, management, janitorial, legal,
                                accounting, insurance, and service agreement
                                costs related to the Project. If the Building is
                                managed by an affiliate of Landlord, building
                                management fees in excess of management fees
                                charged by independent property managers for
                                comparable buildings in the Building's
                                geographic market area shall be excluded from
                                defined expenses.

                        (c)     All maintenance, replacement and repair costs
                                relating to the areas within or around the
                                Project, including, without limitation, air
                                conditioning systems, sidewalks, landscaping,
                                service areas, driveways, parking Areas
                                (including resurfacing and restriping parking
                                areas), walkways, building exteriors (including


                                       5
<PAGE>   6

                                painting), signs and directories, repairing and
                                replacing roofs, walls, etc. These costs may be
                                included either based on actual expenditures or
                                the use of an accounting reserve based on past
                                cost experience for the Project.

                        (d)     Amortization (along with reasonable financing
                                charges) of capital betterments made to the
                                Project which may be required by any government
                                authority or which will improve the operating
                                efficiency of the Project (provided, however,
                                that the amount of such amortization for
                                improvements not mandated by government
                                authority shall not exceed in any year the
                                amount of costs reasonably determined by
                                Landlord in its sole discretion to have been
                                saved by the expenditure either through the
                                reduction or minimization of increases which
                                would have otherwise occurred).

                        (e)     Real Property Taxes including all taxes,
                                assessments (general and special) and other
                                impositions or charges which may be taxed,
                                charged, levied, assessed or imposed upon all or
                                any portion of or in relation to the Project or
                                any portion thereof, any leasehold estate in the
                                Premises or measured by Rent from the Premises,
                                including any increase caused by the transfer,
                                sale or encumbrance of the Project or any
                                portion thereof. "Real Property Taxes" shall
                                also include any form of assessment, levy,
                                penalty, charge or tax (other than estate,
                                inheritance, net income, or franchise taxes)
                                imposed by any authority having a direct or
                                indirect power to tax or charge, including,
                                without limitation, any city, county, state
                                federal or any improvement or other district,
                                whether such tax is (1) determined by the value
                                of the Project or the Rent or other sums payable
                                under this Lease; (2) upon or with respect to
                                any legal or equitable interest of Landlord in
                                the Project or any part thereof; (3) upon this
                                transaction or any document to which Tenant is a
                                party creating a transfer in any interest in the
                                Project, (4) in lieu of or as a direct
                                substitute in whole or in part of or in addition
                                to any real property taxes on the Project, (5)
                                based on any parking spaces or parking
                                facilities provided in the Project, or (6) in
                                consideration for services, such as police
                                protection, fire protection, street, sidewalk
                                and roadway maintenance, refuse removal or other
                                services that may be provided by any
                                governmental or quasi-governmental agency from
                                time to time which were formerly provided
                                without charge or with less charge to property
                                owners or occupants.

                        (f)     Landlord agrees that Expenses as defined in
                                Section 4(c) shall not include the following:
                                (i) the cost of any special services rendered to
                                individual tenants for which a separate charge
                                is billed; (ii) costs of capital betterments
                                except as provided in subsection 4(c)(1)(d)
                                above; (iii) Legal fees, brokerage commissions,
                                advertising costs, or other related expenses
                                incurred by Landlord in an effort to generate
                                rental income; (iv) Repairs, alterations,
                                additions, improvements or replacements made to
                                rectify or correct any defect in the original
                                design, materials or workmanship of Building or
                                common areas (but not including repairs,
                                alterations, additions, improvements or
                                replacements made as a result of ordinary wear
                                and tear); (v) Damage and repairs attributable
                                to fire or other casualty for which Landlord is
                                reimbursed from insurance proceeds; (vi) (a)
                                Executive Salaries or (b) Salaries of service
                                personnel for performance of services except to
                                the extent incurred directly in connection with
                                the management, operation, repair or maintenance
                                of the Building; (viii) Landlord's general
                                overhead expenses not related to the Building,
                                provided that Landlord shall be allowed to
                                include the value of any rent-free or
                                rent-reduced occupancy in the Building if such
                                is given to the managing entity in lieu of a
                                higher management fee; (ix) Legal fees,
                                accountants' fees and other expenses incurred in
                                connection with disputes with tenants or other
                                occupants of the Building or associated with the
                                enforcement of the terms of any leases with
                                other tenants or otherwise incurred for any
                                reason other than for the general benefit of all
                                tenants in the Building; (x) Costs (including
                                permit, license and inspection fees) incurred in
                                renovating or otherwise improving, decorating,
                                painting or altering (a) vacant space (excluding
                                common areas) in the Building, or (b) space for
                                tenants or other occupants in the Building, or
                                (c) costs incurred in supplying any improvement
                                item specifically for, or specific services to,
                                other tenants in the Building; (xi) Principal
                                and/or interest payments called for under any
                                debt secured by a mortgage or deed of trust on
                                the Building; (e) Landlord shall not attempt to
                                collect in excess of one hundred percent (100%)
                                of Operating Expenses and shall not recover any
                                item of cost more than once; (xiii) Any bad debt
                                loss, rent loss, or reserves for bad debts or
                                rent loss; (xiv) All items and services for
                                which Tenant or any other tenant in the Building
                                otherwise reimburses Landlord; (xv) Electric
                                power costs for which any tenant directly
                                contracts with the local public service company;
                                (xvi) Costs arising from Landlord's political or
                                charitable contributions; (xvii) Costs, other
                                than those incurred in ordinary maintenance, for
                                the purchase and installation of sculpture,
                                paintings or other objects of art; (xviii) Tax
                                penalties incurred as a result of Landlord's
                                negligence, inability or unwillingness to make
                                payments when due; (xix) Costs incurred due to a
                                violation by Landlord or any other tenant of the
                                Building of the terms and conditions of any
                                lease; (xx) Costs and expenses incurred in
                                complying with hazardous waste and environmental
                                laws where the lack of compliance is caused by
                                hazardous waste brought into the Project by


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<PAGE>   7

                                Landlord, its employees, agents or contractors
                                or other tenants; (xxi) Costs or expenses which
                                would be capitalized under generally accepted
                                accounting principals, and which relate to the
                                initial completion of the Premises, load bearing
                                walls and other structural elements of the
                                Building or the Project, or during the initial
                                Lease Term related to the replacement of the
                                heating and air conditioning and other Building
                                and Project systems; and (xxii) direct costs of
                                managing the Garage paid to third party garage
                                operators such as management fees, attendants,
                                cashiers and maintenance of ticket dispensing
                                equipment.

                2)      ANNUAL ESTIMATE OF EXPENSES, TENANT'S SHARE. When Tenant
                        takes possession of the Premises, Landlord shall
                        estimate Tenant's share of Expenses for the remainder of
                        the calendar year, and at the commencement of each
                        calendar year thereafter, Landlord shall estimate
                        Tenant's Share of Expenses for the coming year by
                        multiplying the appropriate estimated annual Building or
                        Project Expenses by Tenant's Share.

                3)      MONTHLY PAYMENT OF EXPENSES. Tenant shall pay to
                        Landlord, monthly in advance, as Additional Rent,
                        one-twelfth (1/12) of the Annual Estimate of Tenant's
                        Share of Expenses beginning on the date Tenant takes
                        possession of the Premises. As soon as practical
                        following each calendar year, Landlord shall prepare an
                        accounting of actual Expenses incurred during the prior
                        calendar year and such accounting shall reflect Tenant's
                        Share of Expenses. If the Additional Rent paid by Tenant
                        under this Section 4(c)(3) during the preceding calendar
                        year was less than the actual amount of Tenant's Share
                        of Expenses, Landlord shall so notify Tenant and Tenant
                        shall pay such amount to Landlord within 30 days of
                        receipt of such notice. Such amount shall be deemed to
                        have accrued during the prior calendar year and shall be
                        due and payable from Tenant even though the term of this
                        Lease has expired or this Lease has been terminated
                        prior to Tenant's receipt of this notice. Tenant shall
                        have thirty (30) days from receipt of such notice to
                        contest the amount due, failure to so notify Landlord
                        shall represent final determination of Tenant's Share of
                        Expenses. If Tenant's payments were greater than the
                        actual amount, then such overpayment shall be credited
                        by Landlord to Tenant's Share of Expenses due under this
                        Section 4(c)(3). If such overpayment is determined after
                        termination of this Lease, then such overpayment shall
                        be paid by Landlord to Tenant within thirty (30) days
                        after the annual expense statement is completed with
                        deduction of any remaining sums owed by Tenant to
                        Landlord.

                4)      RENT WITHOUT OFFSET AND LATE CHARGE. As used herein,
                        "Rent" shall mean all monetary sums due from Tenant to
                        Landlord. All Base Monthly Rent shall be paid by Tenant
                        to Landlord without prior notice or demand in advance on
                        the first day of every calendar month, at the address
                        shown in Section 1, or such other place as Landlord may
                        designate in writing from time to time. Whether or not
                        so designated, all other sums due from Tenant under this
                        Lease shall constitute Additional Rent, payable without
                        prior notice or demand when specified in this Lease, but
                        if not specified, then within thirty (30) days of
                        demand, during which time the parties will work to
                        resolve any good faith disagreements on the amount due.
                        All Rent shall be paid without any deduction or offset
                        whatsoever except as otherwise specifically provided
                        herein. All Rent shall be paid in lawful currency of the
                        United States of America. Proration of Rent due for any
                        partial month shall be calculated by dividing the number
                        of days in the month for which Rent is due by the actual
                        number of days in that month and multiplying by the
                        applicable monthly rate. Tenant acknowledges that late
                        payment by Tenant to Landlord of any Rent, Additional
                        Rent or other sums due under this Lease will cause
                        Landlord to incur costs not contemplated by this Lease,
                        the exact amount of such cost being extremely difficult
                        and impracticable to ascertain. Such costs include,
                        without limitation, processing and accounting charges
                        and late charges that may be imposed on Landlord by the
                        terms of any encumbrance or note secured by the
                        Premises. Therefore, if any Rent or other sum due from
                        Tenant is not received within five (5) business days of
                        the date due, Tenant shall pay to Landlord an additional
                        sum equal to 5% of such overdue payment. Landlord and
                        Tenant hereby agree that such late charge represents a
                        fair and reasonable estimate of the costs that Landlord
                        will incur by reason of any such late payment and that
                        the late charge is in addition to any and all remedies
                        available to the Landlord and that the assessment and/or
                        collection of the late charge shall not be deemed a
                        waiver of any other default. Additionally, all such
                        delinquent Rent or other sums, plus this late charge,
                        which are more than thirty (30) days past due, shall
                        bear interest at the rate of 15 percent per annum. If
                        the interest rate specified in this Lease is higher than
                        the rate permitted by law, the interest rate is hereby
                        decreased to the maximum legal interest rate permitted
                        by law. Any payments of any kind returned for
                        insufficient funds will be subject to an additional
                        handling charge of $25.00, and thereafter, Landlord may
                        require Tenant to pay all future payments of Rent or
                        other sums due by money order or cashier's check.

                5)      REVIEW AND AUDIT RIGHT. Tenant shall have the right (no
                        more frequently than once per calendar year) to review
                        Landlord's books and records pertaining to Expenses for
                        the prior year. Tenant may cause an audit of Landlord's
                        books and records which will be conducted by an
                        independent certified public accountant designated by
                        Tenant. If any such audit discloses Tenant overpaid its
                        share of Expenses for any calendar year, Landlord shall
                        pay Tenant the amount of the overpayment within thirty
                        (30) days after the results of the audit have been
                        disclosed to both parties. If any such audit discloses
                        that Tenant underpaid its share of Expenses during any
                        calendar year, Tenant shall pay


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<PAGE>   8

                        Landlord the amount of the underpayment within thirty
                        (30) days after the results of the audit have been
                        disclosed to both parties. All costs and expenses of the
                        audit shall be paid by Tenant; however, if the audit
                        shows Landlord overstated Tenant's share of expenses for
                        the subject calendar year by more than five percent (5%)
                        of the amount actually payable by Tenant, Landlord shall
                        reimburse Tenant for the reasonable costs and expenses
                        of the audit within thirty (30) days of receipt of
                        Tenant's notice of the amount due. Any review or audit
                        of Landlord's books and records pertaining to Expenses
                        shall occur at the office of the Building manager or at
                        such other location in the Seattle Metropolitan Area as
                        Landlord or its Building manager may designate and shall
                        occur during the normal business hours of the Building
                        manager, unless otherwise agreed by Landlord and Tenant.
                        The results of the audit and any information obtained by
                        Tenant from the audit or Tenant's review of Landlord's
                        books and records shall be kept confidential and not
                        disclosed to any other person or entity, including any
                        other tenant of the Buildings or the Project, except as
                        required by court order or applicable law.

5.      PREPAID RENT. Tenant shall, in addition to the payment of the first
        month's Rent as set forth in Section 4(a), pay to Landlord the prepaid
        Rent set forth in Section 1(n), and if Tenant is not in default of any
        provisions of this Lease, such prepaid Rent shall be applied toward Base
        Monthly Rent for the months set forth in Section 1(n). Landlord's
        obligations with respect to the prepaid Rent are those of a debtor and
        not of a trustee, and Landlord can commingle the prepaid Rent with
        Landlord's general funds. Landlord shall not be required to pay Tenant
        interest on the prepaid Rent. Landlord shall be entitled to immediately
        endorse and cash Tenant's prepaid Rent; however, such endorsement and
        cashing shall not constitute Landlord's acceptance of this Lease. In the
        event Landlord does not accept this Lease, Landlord shall return said
        prepaid Rent.

6.      DEPOSIT. Upon execution of this Lease, Tenant shall deposit a security
        deposit as set forth in Section 1(l) with Landlord in the form of an
        irrevocable, unconditional letter of credit from an acceptable financial
        institution. The form of the Letter of Credit and the terms under which
        it shall be extinguished is provided in Exhibit H, Form of Letter of
        Credit. If Tenant is in default, Landlord can use the Letter of Credit
        or any portion of it to cure the default or to compensate Landlord for
        any damages sustained by Landlord resulting from Tenant's default. Upon
        demand, Tenant shall immediately restore the Letter of Credit to its
        full amount. In no event will Tenant have the right to apply any part of
        the security deposit to any Rent or other sums due under this Lease. If
        Tenant is not in default at the expiration or termination of this Lease,
        Landlord shall return the Letter of Credit to Tenant. Landlord shall not
        be required to pay Tenant interest on the security deposit.

7.      USE OF PREMISES AND PROJECT FACILITIES. Tenant shall use the Premises
        solely for the purposes set forth in Section 1 and for no other purpose
        without obtaining the prior written consent of Landlord, which consent
        shall not be unreasonably withheld, delayed or conditioned. Tenant
        acknowledges that neither Landlord nor any agent of Landlord has made
        any representation or warranty with respect to the Premises or with
        respect to the suitability of the Premises or the Project for the
        conduct of Tenant's business, nor has Landlord agreed to undertake any
        modification, alteration or improvement to the Premises or the Project,
        except as provided in writing in this Lease. Tenant acknowledges that
        Landlord may from time to time, at its sole discretion, make such
        modifications, alterations, deletions or improvements to the Project as
        Landlord may deem necessary or desirable, without compensation or notice
        to Tenant as long as such modifications, alterations, deletions or
        improvements do not materially alter Tenant's use of its Premises.
        Tenant shall promptly comply with all laws, ordinances, orders and
        regulations affecting the Premises and the Project, including, without
        limitation, any rules and regulations that may be attached to this Lease
        and to any reasonable modifications to these rules and regulations as
        Landlord may adopt from time to time. Tenant acknowledges that, except
        for Landlord's obligations pursuant to Section 13, Tenant is solely
        responsible for ensuring that the Premises comply with any and all
        governmental regulations applicable to Tenant's conduct of business on
        the Premises, and that Tenant is solely responsible for any alterations
        or improvements that may be required by such regulations, now existing
        or hereafter adopted. Tenant shall not do or permit anything to be done
        in or about the Premises or bring or keep anything in the Premises that
        will in any way increase the premiums paid by Landlord on its insurance
        related to the Project or which will in any way increase the premiums
        for fire or casualty insurance carried by other tenants in the Project.
        Tenant will not perform any act or carry on any practices that may
        injure the Premises or the Project; that may be a nuisance or menace to
        other tenants in the Project; or that shall in any way interfere with
        the quiet enjoyment of such other tenants. Tenant shall not use the
        Premises for sleeping, washing clothes, cooking or the preparation,
        manufacture or mixing of anything that might emit any objectionable
        odor, noises, vibrations or lights onto such other tenants. If sound
        insulation is required to muffle noise produced by Tenant on the
        Premises, Tenant at its own cost shall provide all necessary insulation.
        Tenant shall not do anything on the premises which will overload any
        existing parking or service to the Premises. Pets and/or animals of any
        type shall not be kept on the Premises.

8.      HAZARDOUS SUBSTANCES; DISRUPTIVE ACTIVITIES

        a.      HAZARDOUS SUBSTANCES.

                (1)     Presence and Use of Hazardous Substances. Tenant shall
                        not, without Landlord's prior written consent, keep on
                        or around the Premises, Common Areas or Building, for
                        use, disposal, treatment, generation, storage or sale,
                        any substances designated as, or containing components
                        designated as hazardous, dangerous, toxic or harmful,
                        and/or is subject to regulation, statute or ordinance
                        (collectively referred to as "Hazardous Substances").
                        Notwithstanding the preceding sentence, Tenant may keep,
                        use, store and dispose of, in, on and from the Premises,
                        materials and supplies otherwise constituting


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<PAGE>   9

                        Hazardous Substances which are customarily used for the
                        purposes set forth in Section 1, provided such materials
                        and supplies are used, handled and disposed of in
                        accordance with all applicable governmental rules,
                        regulations, laws and requirements, and in accordance
                        with prudent business practices. With respect to any
                        such Hazardous Substance, Tenant shall:

                        (i)     Comply promptly, timely, and completely with all
                                governmental requirements for reporting,
                                keeping, and submitting manifests, and obtaining
                                and keeping current identification numbers;

                        (ii)    Submit to Landlord true and correct copies of
                                all reports, manifests, and identification
                                numbers at the same time as they are required to
                                be and/or are submitted to the appropriate
                                governmental authorities;

                        (iii)   Within five (5) days of Landlord's request,
                                submit written reports to Landlord regarding
                                Tenant's use, storage, treatment,
                                transportation, generation, disposal or sale of
                                Hazardous Substances and provide evidence
                                satisfactory to Landlord of Tenant's compliance
                                with the applicable government regulations;

                        (iv)    Allow Landlord or Landlord's agent or
                                representative to come on the Premises at
                                reasonable times, with at least twenty four (24)
                                hours prior notice to Tenant (except in an
                                emergency, when no notice is required), to check
                                Tenant's compliance with all applicable
                                governmental regulations regarding Hazardous
                                Substances;

                        (v)     Comply with minimum levels, standards or other
                                performance standards or requirements which may
                                be set forth or established for certain
                                Hazardous Substances (if minimum standards or
                                levels are applicable to Hazardous Substances
                                present on the Premises, such levels or
                                standards shall be established by an on-site
                                inspection by the appropriate governmental
                                authorities and shall be set forth in an
                                addendum to this Lease); and

                        (vi)    Comply with all applicable governmental rules,
                                regulations and requirements regarding the
                                proper and lawful use, sale, transportation,
                                generation, treatment, and disposal of Hazardous
                                Substances.

                (2)     If Tenant violates any provisions of this section, then
                        any and all costs incurred by Landlord and associated
                        with Landlord's monitoring of Tenant's compliance with
                        this Section 8, including Landlord's attorneys' fees and
                        costs, shall be Additional Rent and shall be due and
                        payable to Landlord immediately upon demand by Landlord.

        b.      CLEANUP COSTS, DEFAULT AND INDEMNIFICATION.

                (1)     Tenant shall be fully and completely liable to Landlord
                        for any and all cleanup costs, and any and all other
                        charges, fees, penalties (civil and criminal) imposed by
                        any governmental authority with respect to Tenant's use,
                        disposal, transportation, generation and/or sale of
                        Hazardous Substances, in or about the Premises, Common
                        Areas, or Building.

                (2)     Tenant shall indemnify, defend and save Landlord and
                        Landlord's lender, if any, harmless from any and all of
                        the costs, fees, penalties and charges assessed against
                        or imposed upon Landlord (as well as Landlord's and
                        Landlord's lender's attorneys' fees and costs) as a
                        result of Tenant's use, disposal, transportation,
                        generation and/or sale of Hazardous Substances.

                (3)     Upon Tenant's default under this Section 8, in addition
                        to the rights and remedies set forth elsewhere in this
                        Lease, Landlord shall be entitled to the following
                        rights and remedies:

                        (i)     At Landlord's option, to terminate this Lease
                                immediately; and/or

                        (ii)    To recover any and all damages associated with
                                the default, including, but not limited to
                                cleanup costs and charges, civil and criminal
                                penalties and fees, loss of business and sales
                                by Landlord and other tenants of the Buildings,
                                any and all damages and claims asserted by third
                                parties and Landlord's attorneys' fees and
                                costs.

        c.      DISPOSAL OF WASTE

                (1)     REFUSE DISPOSAL. Tenant shall not keep any trash,
                        garbage, waste or other refuse on the Premises except in
                        sanitary containers and shall regularly and frequently
                        remove same from the Premises. Tenant shall keep all
                        incinerators, containers or other equipment used for
                        storage or disposal of such materials in a clean and
                        sanitary condition.

                (2)     SEWAGE DISPOSAL. Tenant shall properly dispose of all
                        sanitary sewage and shall not use the sewage disposal
                        system (a) for the disposal of anything except sanitary
                        sewage or (b) in excess of the lesser amount (i)
                        reasonably contemplated by the uses permitted under this
                        Lease or (ii) permitted by any governmental entity.
                        Tenant shall keep the sewage


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<PAGE>   10

                        disposal system free of all obstructions and in good
                        operating condition.

                (3)     DISPOSAL OF OTHER WASTE. Tenant shall properly dispose
                        of all other waste or other matter delivered to, stored
                        upon, located upon or within, used on, or removed from,
                        the Premises in such a manner that it does not, and will
                        not, adversely affect the (a) health or safety of
                        persons, wherever located, whether on the Premises or
                        elsewhere (b) condition, use or enjoyment of the
                        Premises or any other real or personal property,
                        wherever located, whether on the Premises or anywhere
                        else, or (c) Premises or any of the improvements thereto
                        or thereon including buildings, foundations, pipes,
                        utility lines, landscaping or parking areas.

        d.      DISRUPTIVE ACTIVITIES. Tenant shall not:

                (1)     Produce, or permit to be produced, any intense glare,
                        light or heat except within an enclosed or screened area
                        and then only in such manner that the glare, light or
                        heat shall not, outside the Premises, be materially
                        different from the light or heat from other sources
                        outside the Premises;

                (2)     Create, or permit to be created, any sound pressure
                        level which will interfere with the quiet enjoyment of
                        any real property outside the Premises, or which will
                        create a nuisance or violate any governmental law, rule,
                        regulation or requirement;

                (3)     Create, or permit to be created, any ground vibration
                        that is materially discernible outside the Premises;

                (4)     Transmit, receive or permit to be transmitted or
                        received, any electromagnetic, microwave or other
                        radiation which is harmful or hazardous to any person or
                        property in, or about the Project; or

                (5)     Create, or permit to be created, any noxious odor that
                        is disruptive to the business operations of any other
                        tenant in the Project.

9.      SIGNAGE. All signing shall comply with rules and regulations set forth
        by Landlord as may be modified from time to time. Tenant shall place no
        window covering (e.g., shades, blinds, curtains, drapes, screens, or
        tinting materials) other than those installed per Exhibit C, stickers,
        signs, lettering, banners or advertising or display material on or near
        exterior windows or doors if such materials are visible from the
        exterior of the Premises, without Landlord's prior written consent.
        Similarly, Tenant may not install any alarm boxes, foil protection tape
        or other security equipment on the Premises without Landlord's prior
        written consent. Any material violating this provision may be destroyed
        by Landlord without compensation to Tenant. Allowed tenant signage is
        provided for in Section 39, Tenant Signage, and Exhibit D, Signage
        Criteria.

10.     PERSONAL PROPERTY TAXES. Tenant shall pay before delinquency all taxes,
        assessments, license fees and public charges levied, assessed or imposed
        upon its business operations as well as upon all trade fixtures,
        leasehold improvements, merchandise and other personal property in or
        about the Premises.

11.     BUILDING PARKING GARAGE.

        a.      GRANT OF NON-EXCLUSIVE RIGHT. Landlord grants to Tenant and
                Tenant's customers, suppliers, employees and invitees, a
                non-exclusive license to use up to 1.9 parking spaces per 1,000
                rentable square feet of the Premises. The estimated number of
                parking spaces is set forth in Section 1(i). This number shall
                be phased in based on rentable square footage under lease
                according to the phased Commencement Dates of Buildings Two and
                Three as provided in Sections 1 and 3. Landlord reserves the
                right at any time to grant similar non-exclusive use to other
                tenants, to promulgate rules and regulations relating to the use
                of such parking areas, including reasonable restrictions on
                parking by tenants and employees, to designate specific spaces
                for the use of any tenant, to make changes in the parking layout
                from time to time, and to establish reasonable time limits on
                parking.

        b.      LOCATION AND DESIGNATION. There shall exist within the Project a
                garage and surface parking area (collectively the "Garage").
                Landlord shall issue to Tenant parking stickers, tags, or access
                cards (collectively referred to herein as a "Parking Permit") in
                a number equal to the number of allocated parking spaces
                specified in Section 11 (a) above. Each Parking Permit will
                authorize parking in the Garage for one (1) car, twenty-four
                (24) hours a day, seven days a week subject to modification as
                provided in this Section 11. Landlord may designate, subject to
                change from time to time, certain areas within the Garage within
                which each car may be parked, and Tenant shall observe such
                designations. Tenant shall observe all reasonable rules and
                regulations promulgated by Landlord from time to time concerning
                the use of the Garage and shall supply such additional
                information relating to persons authorized to use the Garage as
                may be reasonably requested by Landlord from time to time,
                including automobile license numbers related to each Parking
                Permit. All such rules and regulations will apply fairly and
                equally to all tenants.

        c.      OPERATIONS. Landlord may maintain, at it's sole discretion,
                within the Garage or surface parking area, an area designated
                "visitor parking" which may be made accessible on an exclusive
                basis to visitors, clients and other invitees of Building
                tenants, including Tenant, on an hourly charge basis. Upon the
                Commencement of this Lease, the Garage shall be open to the
                general public during the hours of 7:00 a.m. through 7:00 p.m.,
                Monday through Friday, excluding Building


                                       10
<PAGE>   11

                holidays. Landlord shall provide an access system to the
                enclosed portion of the Garage for use by Tenant during the
                periods the Garage is not open to the general public. Hours
                during which the general public will have access to the Garage
                shall be determined at Landlord's sole discretion and may be
                adjusted from time to time.

        d.      CHARGES. The initial monthly charge for the Parking Permits to
                be provided Tenant by Landlord shall be the amount set forth in
                Section 1(i) of the Lease. Such rate shall be in effect upon the
                Commencement Date of the Lease, subject to adjustment during
                each year of the Lease term based upon comparable parking rates
                for similar buildings in the Lower Queen Anne area (reflecting
                any applicable federal, state and local taxes and levies),
                however, in no event shall the rate set forth in Section 1(i) be
                increased for Tenant's allocated Parking Permits during the
                initial twelve (12) months of the Lease term and the rate during
                the second twelve (12) months of the lease term shall not be
                increased more than 5% above the rate set forth in Section 1(i).
                Landlord shall maintain a parking validation system for use by
                tenant customers, clients and invitees. Tenant's monthly parking
                charge for all Parking Permits and the charges for all validated
                parking, if any, shall be billed to Tenant and shall be due as
                Additional Rent within ten (10) days after such billing. All
                hourly parking shall be priced comparably to the hourly parking
                rates charged by similar office buildings located in the area
                (reflecting any applicable federal, state and local taxes and
                levies).

        e.      HOV. Parking stalls required by the City of Seattle for Vanpool,
                carpool and other high occupancy vehicle or transportation
                management programs established under a required transportation
                management plan for the Buildings will be allocated to each
                tenant based upon the proportionate share of Parking Permits
                assigned that tenant for the Buildings, and any such HOV Parking
                Permits shall be counted against Tenant's total Permit
                allocation pursuant to Section 11(a).

12.     UTILITIES/SERVICES

        a.      UTILITIES/SERVICES. Landlord shall cause public utilities to
                furnish electricity, gas, water and sewer utilized in operating
                all normal facilities serving the Premises; and to furnish
                Tenant during Tenant's occupancy of the Premises:

                (1)     Hot and cold water at those points of supply provided
                        for general use of Tenant in the Building; central
                        heating and air conditioning in season and at such
                        temperatures and in such amounts as are reasonably
                        considered by Landlord to be standard for comparable
                        buildings in the Lower Queen Anne area. Tenant shall set
                        operating hours for the Building, subject to the
                        reasonable approval of Landlord. For purposes of this
                        Lease in determining the estimated amount in Section
                        1(k), normal business hours for the Building, Common
                        Areas and the Garage of the Project are estimated to be
                        7:00 AM to 6:00 PM Monday through Friday and 7:00 AM to
                        1:00 PM Saturdays, excluding holidays. Routine
                        maintenance, painting and electric lighting service for
                        all public areas and special service areas of the
                        Building shall be provided as reasonably requested by
                        Tenant. During other than normal business hours for the
                        Building such services shall be provided upon request of
                        Tenant, and if reasonably available, Tenant shall bear
                        the entire cost thereof as Additional Rent. Tenant shall
                        have access to the Premises twenty four (24) hours per
                        day, seven (7) days per week, including holidays and
                        weekends, subject to Building security systems and
                        procedures.

                (2)     Janitorial service on a five (5) day week basis in
                        accordance with the janitorial specifications attached
                        hereto as Exhibit E (which standards shall be subject to
                        reasonable modification by Landlord from time to time to
                        reflect changes in the industry). If Tenant requires
                        janitorial service in excess of such established
                        standards, and Landlord provides such service, Tenant
                        shall pay any additional cost attributable thereto as
                        Additional Rent.

                (3)     Electrical facilities to provide sufficient capacity to
                        serve the electrical power needs of Landlord's equipment
                        servicing the Building and including up to 3.0 watts per
                        square foot of Tenant's Premises for convenience outlet
                        loads and Tenant's miscellaneous equipment loads. In the
                        event Tenant requires electrical service (e.g. the
                        supply of power in a specific voltage or amperage
                        configuration) other than what is provided by the
                        Building to serve Tenant's equipment, and should the
                        installation of such equipment require additional air
                        conditioning capacity above that provided by the
                        Building's standard system, then the cost of the
                        installation and operation of the additional electrical
                        service and air conditioning equipment, if any, shall be
                        paid by Tenant.

                In the event Tenant desires any of the aforementioned services
                in amounts in excess of those required to be provided by
                Landlord pursuant to the terms of Section 12(a) above, Tenant
                shall pay Landlord as Additional Rent hereunder the cost of
                providing such additional quantities.

        b.      INTERRUPTION. Failure by Landlord to any extent to furnish any
                service, or any cessation thereof, shall not render Landlord
                liable in any respect for damages to either person or property,
                nor be construed as an eviction of Tenant, nor work an abatement
                of rent, nor relieve Tenant from fulfillment of any covenant or
                agreement hereof. Notwithstanding the foregoing, however, if an
                interruption of services for causes within Landlord's reasonable
                control materially impairs Tenant's ability to effectively use
                the Premises and if such interruption continues for more than
                three (3) consecutive days or ten (10) days out of twenty (20)
                day period, Tenant shall thereafter be entitled to abate rent as
                to that portion of the Premises which cannot be used, until the
                service is restored. Should any of the equipment or machinery
                utilized in supplying the services described herein break


                                       11
<PAGE>   12

                down, or for any cause cease to function properly, Landlord
                shall use reasonable diligence to repair same promptly, but
                Tenant shall have no right to terminate this Lease, and shall
                have no claim for rebate or abatement of rent or damages, on
                account of any interruption in service occasioned thereby or
                resulting therefrom. If any interruption of services resulting
                from causes within the reasonable control of Landlord continues
                for thirty (30) consecutive days or more, Tenant may terminate
                this Lease by written notice given to Landlord at any time prior
                to the date on which the services are restored or the
                interference ceases to the extent Tenant can reasonably use and
                occupy the Premises for its intended purposes. With respect to
                an interruption of services which results from causes outside
                the reasonable control of Landlord, if such interruption of
                services continues for more than thirty (30) consecutive days,
                unless the interruption is caused by Tenant, or by repairs or
                alterations requested by Tenant or necessary because of acts or
                omissions of Tenant (or its agents or employees), the Base Rent
                and Additional Rent shall equitably abate in proportion to the
                extent of the interference with Tenant's use of the Premises,
                commencing on the last day of such thirty (30) day period until
                the services are restored or the interference ceases to the
                extent Tenant can again reasonably use and occupy the Premises
                for its intended purposes, and if such interruption of services
                continues for more than one hundred eighty (180) consecutive
                days, Tenant may terminate this Lease by written notice given to
                Landlord at any time prior to the date on which the services are
                restored or the interference ceases to the extent Tenant can
                again reasonably use and occupy the Premises for its intended
                purposes.


13.     MAINTENANCE. Landlord shall maintain, in good condition, the structural
        parts of the Premises, which shall include only the foundations, bearing
        and exterior walls (excluding glass), subflooring and roof (excluding
        skylights), the unexposed electrical, plumbing and sewerage systems,
        including those portions of the systems lying outside the Premises,
        gutters and downspouts on the Building and the heating, ventilating and
        air conditioning system servicing the Premises; provided, however, the
        cost of all such maintenance shall be considered "Expenses" for purposes
        of Section 4(c). Except as provided above, Tenant shall maintain and
        repair the Premises in good condition, including, without limitation,
        maintaining and repairing all walls, storefronts, floors, ceilings,
        interior and exterior doors, exterior and interior windows and fixtures
        and interior plumbing as well as damage caused by Tenant, its agents,
        employees or invitees. Upon expiration or termination of this Lease,
        Tenant shall surrender the Premises to Landlord in the same condition as
        existed at the commencement of the term, except for reasonable wear and
        tear or damage caused by fire or other casualty for which Landlord has
        received all funds necessary for restoration of the Premises from
        insurance proceeds.

14.     ALTERATIONS. Tenant shall not make any alterations to the Premises other
        than Tenant's initial Tenant Improvements per Exhibit F, or to the
        Project, including any changes to the existing landscaping, without
        Landlord's prior written consent, which shall not be unreasonably
        withheld, delayed or conditioned for alterations not affecting
        structural elements or materially altering Building systems. If Landlord
        gives its consent to such alterations, Landlord may post notices in
        accordance with the laws of the state in which the premises are located.
        Any alterations made shall remain on and be surrendered with the
        Premises upon expiration or termination of this Lease, except that
        Landlord may, on or before expiration of the term, elect to require
        Tenant to remove any alterations which Tenant may have made to the
        Premises. At the time Tenant submits plans for alterations to Landlord
        for Landlord's approval, Tenant may request that Landlord elect whether
        such alterations shall be removed at the termination of this Lease, and
        if so requested, Landlord shall make such election simultaneous with its
        approval of the alterations. If Landlord elects to require removal of
        the alterations, then at its own cost Tenant shall restore the Premises
        to the condition designated by Landlord in its election, before the last
        day of the term or within 30 days after notice of its election is given,
        whichever is later.

        Should Landlord consent in writing to Tenant's alteration of the
        Premises, Tenant shall contract with a contractor reasonably approved by
        Landlord for the construction of such alterations, shall secure all
        appropriate governmental approvals and permits, and shall complete such
        alterations with due diligence in compliance with plans and
        specifications reasonably approved by Landlord. All work performed shall
        be done in workmanlike manner and with material (when not specifically
        described in the plans and specifications) of the quality and appearance
        customary in the trade for first-class construction of the type in which
        the Premises are located. All such construction shall be performed in a
        manner which will not interfere with the quiet enjoyment of other
        tenants of the Project. Tenant shall pay all costs for such construction
        and shall keep the Premises and the Project free and clear of all
        mechanics' liens which may result from construction by Tenant. If
        requested by Landlord, Tenant shall post a bond or other security
        reasonably satisfactory to Landlord to protect against liens. Tenant
        will pay directly or reimburse Landlord for any reasonable cost incurred
        by Landlord in reviewing plans and/or monitoring construction.

15.     RELEASE AND INDEMNITY.

        a.      INDEMNITY. Tenant shall indemnify, defend (using legal counsel
                reasonably acceptable to Landlord) and save Landlord and its
                property manager harmless from all claims, suits, losses,
                damages, fines, penalties, liabilities and expenses (including
                Landlord's personnel and overhead costs and attorneys fees and
                other costs incurred in connection with claims, regardless of
                whether such claims involve litigation, but excluding
                consequential damages such as lost profits) resulting from any
                actual or alleged injury (including death) of any person or from
                any actual or alleged loss of or damage to, any property to the
                extent caused by (i) Tenant's occupation, use or improvement of
                the Premises, or that of its employees, agents or contractors,
                or (ii) any act or omission of Tenant or any subtenant,
                licensee, assignee or concessionaire of Tenant, or of any
                officer, agent, employee, guest or invitee of Tenant, or of any
                such entity in or about the Premises. Tenant agrees that the
                foregoing indemnity specifically covers actions brought by its
                own employees. This


                                       12
<PAGE>   13

                indemnity with respect to acts or omissions during the term of
                this Lease shall survive termination or expiration of this
                Lease. The foregoing indemnity is specifically and expressly
                intended to, constitute a waiver of Tenant's immunity under
                Washington's Industrial Insurance Act, RCW Title 51, to the
                extent necessary to provide Landlord with a full and complete
                indemnity from claims made by Tenant and its employees, to the
                extent provided herein. Tenant shall promptly notify Landlord of
                casualties or accidents occurring in or about the Premises.
                LANDLORD AND TENANT ACKNOWLEDGE THAT THE INDEMNIFICATION
                PROVISIONS OF SECTION 8.b AND THIS SECTION 15 WERE SPECIFICALLY
                NEGOTIATED AND AGREED UPON BY THEM.

        b.      LANDLORD INDEMNITY. Except as otherwise provided in this Section
                15 or Section 16, Landlord shall indemnify, defend (using legal
                counsel reasonably acceptable to Tenant) and save Tenant
                harmless from all claims, suits, losses, fines, penalties,
                liabilities and expenses (including Tenant's personnel and
                overhead costs and attorneys' fees and other costs incurred in
                connection with claims, regardless of whether such claims
                involve litigation, but excluding consequential damages such as
                lost profits) resulting from any actual or alleged injury
                (including death) of any person or from any actual or alleged
                loss of or damage to, any property to the extent caused by the
                intentional misconduct or negligence of Landlord or of any
                employee or agent of Landlord in the Common Areas. Landlord
                agrees that the foregoing indemnity specifically covers actions
                brought by its own employees. This indemnity with respect to
                actions or omissions during the term of this Lease shall survive
                termination or expiration of this Lease. The foregoing indemnity
                is specifically and expressly intended to constitute a waiver of
                Landlord's immunity under Washington's Industrial Insurance Act,
                RCW Title 51, to the extent necessary to provide Tenant with a
                full and complete indemnity from claims made by Landlord and its
                employees to the extent of their negligence. LANDLORD AND TENANT
                ACKNOWLEDGE THAT THE INDEMNIFICATION PROVISIONS OF SECTION 15
                WERE SPECIFICALLY NEGOTIATED AND AGREED UPON BY THEM.

        c.      RELEASE. Tenant hereby fully and completely waives and releases
                all claims against Landlord for any losses or other damages
                sustained by Tenant or any person claiming through Tenant
                resulting from any accident or occurrence in or upon the
                Premises, including but not limited to: any defect in or failure
                of Project equipment; any failure to make repairs; any defect,
                failure, surge in, or interruption of Project facilities or
                services; any defect in or failure of Common Areas; broken
                glass; water leakage; the collapse of any Building component; or
                any act, omission or negligence of co-tenants, licensees or any
                other persons or occupants of the Building, provided only that
                the release contained in this Section 15.b shall not apply to
                claims for actual damage to persons or property (excluding
                consequential damages such as lost profits) resulting directly
                from Landlord's breach of its express obligations under this
                Lease which Landlord has not cured within a reasonable time
                after receipt of written notice of such breach from Tenant or
                any of Landlord's negligent or willfull misconduct.

        d.      LIMITATION ON INDEMNITY. In compliance with RCW 4.24.115 as in
                effect on the date of this Lease, all provisions of this Lease
                pursuant to which Landlord or Tenant (the "Indemnitor") agrees
                to indemnify the other (the "Indemnitee") against liability for
                damages arising out of bodily injury to Persons or damage to
                property relative to the construction, alteration, repair,
                addition to, subtraction from, improvement to, or maintenance
                of, any building, road, or other structure, project,
                development, or improvement attached to real estate, including
                the Premises, (i) shall not apply to damages caused by or
                resulting from the sole negligence of the Indemnitee, its agents
                or employees, and (ii) to the extent caused by or resulting from
                the concurrent negligence of (a) the Indemnitee or the
                Indemnitee's agents or employees, and (b) the Indemnitor or the
                Indemnitor's agents or employees, shall apply only to the extent
                of the Indemnitor's negligence; PROVIDED, HOWEVER, the
                limitations on indemnity set forth in this Section shall
                automatically and without further act by either Landlord or
                Tenant be deemed amended so as to remove any of the restrictions
                contained in this Section no longer required by then applicable
                law.

        e.      DEFINITIONS. As used in any Section establishing indemnity or
                release of Landlord, "Landlord" shall include Landlord, its
                partners, officers, agents, employees and contractors, and
                "Tenant" shall include Tenant and any person or entity claiming
                through Tenant.

16.     INSURANCE. Tenant, at its cost, shall maintain commercial general
        liability and property damage insurance and products liability insurance
        with a single combined liability limit of $2,000,000, insuring against
        all liability of Tenant and its representatives, employees, invitees,
        and agents arising out of or in connection with Tenant's use or
        occupancy of the Premises. Landlord may, from time to time, require
        modifications of the insurance coverages hereunder to reflect insurance
        coverages commonly provided in similar projects in the area. Commercial
        general liability insurance, products liability insurance and property
        damage insurance shall insure performance by Tenant of the indemnity
        provisions of Section 15. Landlord and its management contractor shall
        be named as additional insured and the policy shall contain
        cross-liability endorsements. On all its personal property, at its cost,
        Tenant shall maintain a policy of standard fire and extended coverage
        insurance with vandalism and malicious mischief endorsements and "all
        risk" coverage on all Tenant's improvements and alterations, including
        without limitation, all items of Tenant responsibility described in
        Section 13 in or about the Premises, to the extent of at least 90% of
        their full replacement value. The proceeds from any such policy shall be
        used by Tenant for the replacement of personal property and the
        restoration of Tenant's improvements or alterations. All insurance
        required to be provided by Tenant under this Lease: (a) shall be issued
        by Insurance companies authorized to do business in the state in which
        the Premises are located with a financial rating of at least an A IX
        status as rated in the most recent edition of Best's Insurance Reports;
        (b) shall be issued as a primary policy; shall be on an occurrence
        basis; and (d)


                                       13
<PAGE>   14

        shall contain an endorsement requiring at least 30 days prior written
        notice of cancellation to Landlord and Landlord's lender, before
        cancellation or change in coverage, scope or amount of any policy.
        Tenant shall deliver a certificate or copy of such policy together with
        evidence of payment of all current premiums to Landlord within 30 days
        of execution of this Lease. If Tenant fails at any time to maintain the
        insurance required by this Lease, and fails to cure such default within
        five (5) business days of written notice from Landlord then, in addition
        to all other remedies available under this Lease and applicable law,
        Landlord may purchase such insurance on Tenant's behalf and the cost of
        such insurance shall be Additional Rent due within ten (10) days of
        written invoice from Landlord to Tenant.

        Landlord and Tenant release and relieve the other, and waive their
        entire right of recovery for loss or damage to property located within
        or constituting a part or all of the Building or the Project to the
        extent that the loss or damage is covered by (a) the injured party's
        insurance, or (b) the insurance the injured party is required to carry
        under this Article 16, whichever is greater. This waiver applies whether
        or not the loss is due to the negligent acts or omissions of Landlord or
        Tenant, or their respective officers, directors, employees, agents,
        contractors, or invitees. Each of Landlord and Tenant shall have their
        respective property insurers endorse the applicable insurance policies
        to reflect the foregoing waiver of claims, provided however, that the
        endorsement shall not be required if the applicable policy of insurance
        permits the named insured to waive rights of subrogation on a blanket
        basis, in which case the blanket waiver shall be acceptable.

17.     DESTRUCTION. If during the term, more than 25% of the Premises or more
        than 10% of either of Tenant's Buildings are destroyed from any cause,
        or rendered inaccessible or unusable from any cause, Landlord may, in
        its sole discretion, terminate this Lease as to the affected Building(s)
        by delivery of notice to Tenant within 30 days of such event without
        compensation to Tenant. If in Landlord's estimation, the Premises cannot
        be restored within 120 days following such destruction, the Landlord
        shall notify Tenant and Tenant may terminate this Lease by delivery of
        notice to Landlord within 30 days of receipt of Landlord's notice. If
        neither Landlord nor Tenant terminates this Lease as provided above,
        then Landlord shall commence to restore the Premises in compliance with
        then existing laws and shall complete such restoration with due
        diligence. In such event, this Lease shall remain in full force and
        effect, but there shall be an abatement of Base Monthly Rent and
        Tenant's Share of Expenses between the date of destruction and the date
        of completion of restoration, based on the extent to which destruction
        interferes with Tenant's use of the Premises.

18.     CONDEMNATION.

        a.      TAKING. If all of the Premises are taken by Eminent Domain, this
                Lease shall terminate as of the date Tenant is required to
                vacate the Premises and all Base and Additional Rent shall be
                paid to that date. The term "Eminent Domain" shall include the
                taking or damaging of property by, through or under any
                governmental or statutory authority, and any purchase or
                acquisition in lieu thereof, whether the damaging or taking is
                by government or any other person. If, in the reasonable
                judgment of Landlord, a taking of any part of the Premises by
                Eminent Domain renders the remainder thereof unusable for the
                business of Tenant (or the cost of restoration of the Premises
                is not commercially reasonable), the Lease may, at the option of
                either party, be terminated by written notice given to the other
                party not more than thirty (30) days after Landlord gives Tenant
                written notice of the taking, and such termination shall be
                effective as of the date when Tenant is required to vacate the
                portion of the Premises so taken. If this Lease is so
                terminated, all Base and Additional Rent shall be paid to the
                date of termination. Whenever any portion of the Premises is
                taken by Eminent Domain and this Lease is not terminated,
                Landlord shall at its expense proceed with all reasonable
                dispatch to restore, to the extent of available proceeds issued
                from the taking governmental authority and to the extent it is
                reasonably prudent to do so, the remainder of the Premises to
                the condition they were in immediately prior to such taking, and
                Tenant shall at its expense proceed with all reasonable dispatch
                to restore its personal property and all improvements made by it
                to the Premises to the same condition they were in immediately
                prior to such taking. The Base and Additional Rent payable
                hereunder shall be reduced from the date Tenant is required to
                partially vacate the Premises in the same proportion that the
                Rentable Area taken bears to the total Rentable Area of the
                Premises prior to taking.

        b.      AWARD. Landlord reserves all right to the entire damage award or
                payment for any taking by Eminent Domain, and Tenant waives all
                claim whatsoever against Landlord for damages for termination of
                its leasehold interest in the Premises or for interference with
                its business. Tenant hereby grants and assigns to Landlord any
                right Tenant may now have or hereafter acquire to such damages
                and agrees to execute and deliver such further instruments of
                assignment as Landlord may from time to time request. Tenant
                shall, however, have the right to claim from the condemning
                authority and keep all compensation that may be recoverable by
                Tenant on account of any loss incurred by Tenant in moving
                Tenant's merchandise, furniture, trade fixtures and equipment,
                provided, however, that Tenant may claim and keep such damages
                only if they are awarded separately in the eminent domain
                proceeding and not out of or as part of Landlord's damages.

19.     ASSIGNMENT OR SUBLEASE. Tenant shall not assign or encumber its interest
        in this Lease or the Premises or sublease all or any part of the
        Premises or allow any other person or entity (except Tenant's authorized
        representatives, employees, invitees, or guests) to occupy or use all or
        any part of the Premises without first obtaining Landlord's consent,
        which shall not be unreasonably withheld, delayed or conditioned. In
        determining whether to consent to a proposed assignment or subletting,
        Landlord may consider any commercially reasonable basis for approving or
        disapproving the proposed subletting or assignment, including without
        limitation any of the following: (i) whether the clientele, personnel or
        foot traffic which will be generated by the business of the proposed
        assignee or sublessee is consistent in


                                       14
<PAGE>   15

        Landlord's reasonable opinion with the businesses of other tenants of
        the Building or the Project, (ii) whether the proposed assignee has a
        net worth and financial strength and credit record reasonably
        satisfactory to Landlord, and (iii) whether the use of the Premises by
        the proposed assignee or sublessee will violate or create any potential
        violation of any laws or a breach or violation of any other lease or
        agreement by which Landlord is bound. No assignment or sublease shall
        release Tenant from the obligation to perform all obligations under this
        Lease unless otherwise agreed in writing by Landlord. Any assignment,
        encumbrance or sublease without Landlord's written consent shall be
        voidable and at Landlord's election, shall constitute a default. If
        Tenant is a partnership, a withdrawal or change, voluntary, involuntary
        or by operation of law of any partner, or the dissolution of the
        partnership, shall be deemed a voluntary assignment. If Tenant consists
        of more than one person, a purported assignment, voluntary or
        involuntary or by operation of law from one person to the other shall be
        deemed a voluntary assignment. If Tenant is a corporation, any
        dissolution, merger, consolidation or other reorganization of Tenant, or
        sale or other transfer of a controlling percentage of the capital stock
        of Tenant, or the sale of at least 25% of the value of the assets of
        Tenant shall be deemed a voluntary assignment. The phrase "controlling
        percentage" means ownership of and right to vote stock possessing at
        least 25% of the total combined voting power of all classes of Tenant's
        capital stock issued, outstanding and entitled to vote for election of
        directors. The two proceeding sentences shall not apply to corporations
        the stock of which is traded through an exchange or over the counter.
        One half (1/2) of any rent received by Tenant from its subtenants or
        assignees in excess of the Rent payable by Tenant to Landlord under this
        Lease and of any sums to be paid by an assignee to Tenant in which is
        attributable to the leasehold interest, prepayment of rent or "buying
        down" rent (less the costs and expenses incurred by Tenant in connection
        with any such sublease or assignment) shall be paid to Landlord. If at
        the time of the proposed assignment or subletting, the Project is more
        than 15% vacant, then Tenant shall not charge less on the proposed
        assignment or subletting than 95% of the rents being charged by Landlord
        for similar spaces in the Project. For purposes of this Section 19, the
        term "similar spaces in the Project" shall mean similar as to (i)
        location of the floors(s) within the Project, (ii) views, (iii) types of
        tenant improvements and (iv) use. If Tenant requests Landlord to consent
        to a proposed assignment or subletting, Tenant shall pay to Landlord,
        whether or not consent is ultimately given, $100 or Landlord's
        reasonable out of pocket attorney's fees incurred in connection with
        such request, whichever is greater.

        Notwithstanding any other provision of this Section 19, Tenant may
        sublet all or part of the Premises to its parent corporation, if any;
        any subsidiary corporation of Tenant or its parent corporation; or any
        corporation or other entity owned or controlled by Tenant, its parent
        corporation of any subsidiary of Tenant (each an "Affiliate").
        Furthermore, Tenant may assign this Lease to any Affiliates, or to any
        entity resulting from a merger or consolidation with Tenant, provided
        the assignee's financial condition (i.e., net worth and liquidity) is
        comparable to that of Tenant immediately preceding the date of the
        assignment.

        No interest of Tenant in this Lease shall be assignable by involuntary
        assignment through operation of law (including without limitation the
        transfer of this Lease by testacy or intestacy). Each of the following
        acts shall be considered an involuntary assignment: (a) if Tenant is or
        becomes bankrupt or insolvent, makes an assignment for the benefit of
        creditors, or institutes proceedings under the Bankruptcy Act in which
        Tenant is the bankrupt party; or if Tenant is a partnership or consists
        of more than one person or entity, if any partner of the partnership or
        other person or entity is or becomes bankrupt or insolvent, or makes an
        assignment for the benefit of creditors; or (b) if a writ of attachment
        or execution is levied on this Lease; or (c) if in any proceeding or
        action to which Tenant is a party, a receiver is appointed with
        authority to take possession of the Premises. An involuntary assignment
        shall constitute a default by Tenant and Landlord shall have the right
        to elect to terminate this Lease, in which case this Lease shall not be
        treated as an asset of Tenant.

20.     TENANT DEFAULT.

        a.      EVENTS OF DEFAULT. The occurrence of any of the following shall
                constitute a default by Tenant: (i) a failure to pay Rent,
                Additional Rent or other charge when due, provided that Landlord
                shall not exercise any of its rights under this Section 20(a)(i)
                until Landlord has given Tenant notice of such default and a
                cure period of five (5) business days from receipt of such
                notice, and Tenant has failed to pay such Rent, Additional Rent
                or other charge within such cure period provided that, with
                respect to sums due other than Rent and Additional Rent; (ii)
                abandonment and vacation of the Premises (failure to occupy and
                operate the Premises for ten consecutive days while in monetary
                default under this Lease shall be conclusively deemed an
                abandonment and vacation); (iii) failure to perform any other
                material provision of this Lease, provided that Landlord shall
                not exercise any of its rights under this Section 20(a)(iii)
                until Landlord has given Tenant notice of such default and a
                cure period of thirty (30) days from receipt of such notice, and
                Tenant has failed to cure such default within such cure period,
                provided further that if more than thirty (30) days are required
                to complete such performance, the cure period shall not be
                deemed to have run so long as Tenant commences to cure such
                default within the thirty (30) day period and thereafter
                diligently pursues its completion; or (iv) the making by Tenant
                of any general assignment or general arrangement for the benefit
                of creditors or the filing by or against Tenant of a petition in
                bankruptcy, including reorganization or arrangement, unless in
                the case of a petition filed against Tenant and the same is
                dismissed within thirty (30) days, or the appointment of a
                trustee or receiver to take possession of substantially all of
                Tenant's assets located at the Premises or of Tenant's interest
                in this Lease. The notices required by this Section 20 are
                intended to satisfy any and all notice requirements imposed by
                law on Landlord and are not in addition to any such requirement.

        b.      LANDLORD'S REMEDIES. Landlord shall have the following remedies
                if Tenant is in default. (These remedies are not exclusive; they
                are cumulative and in addition to any remedies now or later
                allowed by law): Landlord may terminate Tenant's right to
                possession of the Premises at any time.


                                       15
<PAGE>   16

                No act by Landlord other than giving notice to Tenant shall
                terminate this Lease. Acts of maintenance, efforts to relet the
                Premises, or the appointment of a receiver on Landlord's
                initiative to protect Landlord's interest under this Lease shall
                not constitute a termination of Tenant's right to possession.
                Upon termination of Tenant's right to possession, Landlord has
                the right to recover from Tenant: (1) the worth of the unpaid
                Rent that had been earned at the time of termination of Tenant's
                right to possession; (2) the worth of the amount of the unpaid
                Rent that would have been earned after the date of termination
                of Tenant's right to possession; (3) any other amount, including
                but not limited to, expenses incurred to relet the Premises,
                court, attorney and collection costs, necessary to compensate
                Landlord for all detriment caused by Tenant's default. "The
                Worth," as used for Item (1) in this Paragraph 21 is to be
                computed by allowing interest at the rate of 15 percent per
                annum. If the interest rate specified in this Lease is higher
                than the rate permitted by law, the interest rate is hereby
                decreased to the maximum legal interest rate permitted by law.
                "The Worth" as used for Item (2) in this Paragraph 21 is to be
                computed by discounting the amount at the discount rate of the
                Federal Reserve Bank of San Francisco at the time of termination
                of Tenant's right of possession.

21.     LANDLORD DEFAULT. Landlord shall not be in default unless Landlord fails
        to perform its obligations within thirty (30) days after notice by
        Tenant, specifying wherein Landlord has failed to perform; provided,
        that if the nature of Landlord's obligation is such that more than
        thirty (30) days are required for performance, Landlord shall not be in
        default if Landlord commences performance within thirty (30) days of
        Tenant's notice and thereafter diligently completes performance within a
        reasonable time. Tenant's rights under this Lease shall be limited to
        actions for damages and/or specific performance, and no default by
        Landlord shall entitle Tenant to withhold or offset rent, terminate this
        Lease or to engage in self-help remedies, provided only as follows: If
        Landlord is in default under this Lease, and such default materially
        adversely affects Tenant's ability to do business from the Premises, and
        Landlord fails to cure such default within a commercially reasonable
        time for emergencies and otherwise within thirty (30) days after written
        notice from Tenant (provided that if such default cannot be cured with
        30 days, then if Landlord fails to commence to cure with 30 days and
        diligently pursue such cure to completion), then Tenant shall, upon two
        (2) business days prior written notice to Landlord of Tenant's intent to
        cure the default, be entitled to cure the default and the reasonable
        cost of cure shall be reimbursed by Landlord to Tenant with thirty (30)
        days of invoice therefor. If Landlord fails to make such reimbursement,
        then any issues relating to such default and cure shall, at either
        party's election, be resolved by a single-arbitrator before the American
        Arbitration Association ("AAA") under the Arbitration Rules of the AAA
        modified as follows: (i) the total time from date of demand for
        arbitration to final award shall not exceed 25 days; (ii) the arbitrator
        shall be chosen by the AAA without submittal of lists and subject to
        challenge only for good cause shown; (iii) all notices may be by
        telephone or other electronic communication with later confirmation in
        writing; (iv) the time, date, and place of the hearing shall be set by
        the arbitrator in his or her sole discretion, provided that there be at
        least 3 days prior notice of the hearing; (v) there shall be no
        post-hearing briefs; (vi) there shall be no discovery except by order of
        the arbitrator; and (vii) the arbitrator shall issue his or her award
        within 7 days after the close of the hearing. The arbitration shall be
        held in the county in which the Premises is located. The decision of the
        arbitrator shall be final and binding on the parties and judgment on the
        award rendered by the arbitrator may be entered in any court of
        competent jurisdiction. The fees and expenses of the arbitrator shall be
        paid half by Landlord and half by Tenant unless the arbitrator decides
        otherwise in its discretion. The parties shall each hold harmless and
        indemnify the arbitrator from any claims arising in connection with the
        arbitration.

22.     ENTRY ON PREMISES. Landlord and its authorized representatives shall
        have the right to enter the Premises at all reasonable times, with
        reasonable notice given to Tenant except in the case of an emergency,
        for any of the following purposes: (a) to determine whether the Premises
        are in good condition and whether Tenant is complying with its
        obligations under this Lease; (b) to do any necessary maintenance and to
        make any restoration to the Premises or the Project that Landlord has
        the right or obligation to perform; (c) to post "for sale" signs at any
        time during the term, to post "for rent" or "for lease" signs during the
        last 90 days of the term, or during any period while Tenant is in
        default; (d) to show the Premises to prospective brokers, agents,
        buyers, tenants or persons interested in leasing or purchasing the
        Premises, at any time during the term; or (e) to repair, maintain or
        improve the Project and to erect scaffolding and protective barricades
        around and about the Premises but not so as to prevent entry to the
        Premises and to do any other act or thing necessary for the safety or
        preservation of the Premises or the Project. Landlord shall not be
        liable in any manner for any inconvenience, disturbance, loss of
        business, nuisance or other damage arising out of Landlord's entry onto
        the Premises as provided in this Section 22. Tenant shall not be
        entitled to an abatement or reduction of Rent if Landlord exercises any
        rights reserved in this Section 22. Landlord shall conduct his
        activities on the Premises as provided herein in a commercially
        reasonable manner so as to limit inconvenience, annoyance or disturbance
        to Tenant to the maximum extent practicable and to execute
        confidentiality agreements relating to entering areas Tenant keeps
        secure for intellectual property reasons. For each of these purposes,
        Landlord shall at all times have and retain a key with which to unlock
        all the doors in, upon and about the Premises, excluding Tenant's vaults
        and safes. Tenant shall not alter any lock or install a new or
        additional lock or bolt on any door of the Premises without prior
        written consent of Landlord. If Landlord gives its consent, Tenant shall
        furnish Landlord with a key for any such lock.

23.     SUBORDINATION. Without the necessity of any additional document being
        executed by Tenant for the purpose of effecting a subordination, and at
        the election of Landlord or any mortgagee or any beneficiary of a Deed
        of Trust with a lien on the Project or any ground lessor with respect to
        the Project, this Lease shall be subject and subordinate at all times to
        (a) all ground leases or underlying leases which may now exist or
        hereafter be executed affecting the Project, and (b) the lien of any
        mortgage or deed of trust which may now exist or hereafter be executed
        in any amount for which the Project, ground leases or underlying leases,
        or Landlord's interest or estate in any of said items is specified as
        security. This subordination shall be self operative, provided that so
        long as Tenant is not in default hereunder beyond the applicable Section
        20 cure


                                       16
<PAGE>   17

        period, Tenant shall have continued enjoyment of the Premises free from
        any disturbance or interruption by reason of any foreclosure of Lender's
        deed of trust or mortgage. In the event that any ground lease or
        underlying lease terminates for any reason or any mortgage or Deed of
        Trust is foreclosed or a conveyance in lieu of foreclosure is made for
        any reason, Tenant shall, notwithstanding any subordination, attorn to
        and become the Tenant of the successor in interest to Landlord, at the
        option of such successor in interest. Tenant covenants and agrees to
        execute and deliver, upon demand by Landlord and in the form requested
        by Landlord any additional documents evidencing the priority or
        subordination of this Lease with respect to any such ground lease or
        underlying leases or the lien of any such mortgage or Deed of Trust,
        subject to the non-disturbance provisions contained herein. If Tenant
        fails to deliver such subordination document as required herein, then
        Tenant hereby irrevocably appoints Landlord as attorney-in-fact of
        Tenant to execute, deliver and record any such document in the name and
        on behalf of Tenant.

        Tenant, within ten days from notice from Landlord, shall execute and
        deliver to Landlord, in recordable form, certificates stating that this
        Lease is not in default, is unmodified and in full force and effect, or
        in full force and effect as modified, and stating the modifications.
        This certificate should also state the amount of current monthly Rent,
        the dates to which Rent has been paid in advance, and the amount of any
        security deposit and prepaid Rent. Failure to deliver this certificate
        to Landlord within ten days shall be conclusive upon Tenant that this
        Lease is in full force and effect and has not been modified except as
        may be represented by Landlord.

24.     NOTICE. Any notice, demand or request required hereunder shall be given
        in writing to the party's facsimile number or address set forth in
        Section 1 hereof by any of the following means: (a) personal service;
        (b) electronic communication, whether by telex, telegram or facsimile;
        (c) overnight courier; or (d) registered or certified, first class mail,
        return receipt requested. Such addresses may be changed by notice to the
        other parties given in the same manner as above provided. Any notice,
        demand or request sent pursuant to either subsection (a) or (b) hereof
        shall be deemed received upon such personal service or upon dispatch by
        electronic means with electronic confirmation of receipt. Any notice,
        demand or request sent pursuant to subsection (c) hereof shall be deemed
        received on the business day immediately following deposit with the
        overnight courier and, if sent pursuant to subsection (d), shall be
        deemed received forty-eight (48) hours following deposit in the U.S.
        mail.

25.     WAIVER. No delay or omission in the exercise of any right or remedy by
        Landlord shall impair such right or remedy or be construed as a waiver.
        No act or conduct of Landlord, including without limitation, acceptance
        of the keys to the Premises, shall constitute an acceptance of the
        surrender of the Premises by Tenant before the expiration of the term.
        Only written notice from Landlord to Tenant shall constitute acceptance
        of the surrender of the Premises and accomplish termination of the
        Lease. Landlord's consent to or approval of any act by Tenant requiring
        Landlord's consent or approval shall not be deemed to waive or render
        unnecessary Landlord's consent to or approval of any subsequent act by
        Tenant. Any waiver by Landlord of any default must be in writing and
        shall not be a waiver of any other default concerning the same or any
        other provision of the Lease. TENANT SPECIFICALLY ACKNOWLEDGES AND
        AGREES THAT, WHERE TENANT HAS RECEIVED A NOTICE TO CURE DEFAULT (WHETHER
        RENT OR NON-RENT), NO ACCEPTANCE BY LANDLORD OF RENT SHALL BE DEEMED A
        WAIVER OF SUCH NOTICE, AND, INCLUDING BUT WITHOUT LIMITATION, NO
        ACCEPTANCE BY LANDLORD OF PARTIAL RENT SHALL BE DEEMED TO WAIVE OR CURE
        ANY RENT DEFAULT. LANDLORD MAY, IN ITS DISCRETION, AFTER RECEIPT OF
        PARTIAL PAYMENT OF RENT, REFUND SAME AND CONTINUE ANY PENDING ACTION TO
        COLLECT THE FULL AMOUNT DUE, OR MAY MODIFY ITS DEMAND TO THE UNPAID
        PORTION. IN EITHER EVENT THE DEFAULT SHALL BE DEEMED UNCURED UNTIL THE
        FULL AMOUNT IS PAID IN GOOD FUNDS.

26.     SURRENDER OF PREMISES; HOLDING OVER. Upon expiration of the term, Tenant
        shall surrender to Landlord the Premises and all Tenant improvements and
        alterations in good condition, except for ordinary wear and tear and
        alterations Tenant has the right or is obligated to remove under the
        provisions of Section 14 herein. Tenant shall remove all personal
        property including, without limitation, all data and phone wires and
        other improvements which Landlord has required Tenant to remove pursuant
        to Section 14 or Exhibit F of this Lease. Landlord can elect to retain
        or dispose of in any manner Tenant's personal property not removed from
        the Premises by Tenant prior to the expiration of the term. Tenant
        waives all claims against Landlord for any damage to Tenant resulting
        from Landlord's retention or disposition of Tenant's personal property.
        Tenant shall be liable to Landlord for Landlord's cost for storage,
        removal or disposal of Tenant's personal property.

        If Tenant, with Landlord's consent, remains in possession of the
        Premises after expiration or termination of the term, or after the date
        in any notice given by Landlord to Tenant terminating this Lease, such
        possession by Tenant shall be deemed to be a month-to-month tenancy
        terminable as provided under Washington law, by either party. All
        provisions of this Lease, except those pertaining to term and Rent,
        shall apply to the month-to-month tenancy. During any holdover term,
        Tenant shall pay Base Monthly Rent in an amount equal to 150% of Base
        Monthly Rent for the last full calendar month during the regular term
        plus 100% of Tenant's share of Expenses pursuant to Section 4(c)(3).

27.     LIMITATION OF LANDLORD'S LIABILITY. In consideration of the benefits
        accruing hereunder, Tenant agrees that, in the event of any actual or
        alleged failure, breach or default of this Lease by Landlord, Landlord's
        liability under this Lease shall be limited to, and Tenant shall look
        only to Landlord's interest in the Project and the rents and proceeds
        thereof.

28.     MISCELLANEOUS PROVISIONS.

        a.      TIME OF ESSENCE. Time is of the essence of each provision of
                this Lease.


                                       17
<PAGE>   18

        b.      AUTHORITY. If Tenant is a corporation, Tenant will deliver to
                Landlord, contemporaneously with this Lease, an authorizing
                resolution by Tenant's Board of Directors, authorizing the
                person(s) executing this Lease to do so, or other evidence of
                such person(s) authority as is reasonably satisfactory to
                Landlord.

        c.      SUCCESSORS. This Lease shall be binding on and inure to the
                benefit of the parties and their successors, except as provided
                in Section 19 herein.

        d.      LANDLORD'S CONSENT. Except as otherwise specifically provided
                herein, any consent required by Landlord under this Lease must
                be granted in writing and may be withheld by Landlord in its
                sole and absolute discretion unless otherwise provided herein.

        e.      COMMISSIONS. Each party represents that it has not had dealings
                with any real estate broker, finder or other person with respect
                to this Lease in any manner, except for the broker identified in
                Section 1(p), who shall be compensated by the party identified
                in Section 1(p). Landlord and Tenant recognize that it is
                possible that they may hereafter make additional agreements
                regarding further extension or renewal of this Lease or a new
                lease or leases for all or one or more parts of the Premises or
                other space in the Project for a term or terms commencing after
                the Commencement Date of this Lease. Landlord and Tenant
                recognize that it is also possible that they may hereafter
                modify this Lease to add additional space or to substitute space
                as part of the Premises. If any such additional agreements, new
                leases or modifications to this Lease are made (except for the
                space leased in Buildings Two and Three per the terms of this
                Amended and Restated Lease), unless otherwise agreed in writing
                by Landlord, Landlord shall not have any obligation to pay any
                compensation to any real estate broker or to any other third
                person engaged by Tenant to render services to Tenant in
                connection with negotiating such matters, regardless of whether
                under the circumstances such person is or is not regarded by the
                law as an agent of Landlord.

        f.      OTHER CHARGES. If either party commences any litigation against
                the other party or files an appeal of a decision arising out of
                or in connection with the Lease, the prevailing party shall be
                entitled to recover from the other party reasonable attorney's
                fees and costs of suit. If Landlord employs a collection agency
                to recover delinquent charges, Tenant agrees to pay all
                collection agency and attorneys' fees charged to Landlord in
                addition to Rent, late charges, interest and other sums payable
                under this Lease. Tenant shall pay a charge of $75 to Landlord
                for preparation of a demand for delinquent Rent.

        g.      FORCE MAJEURE. Neither party shall be deemed in default hereof
                nor liable for damages arising from its failure to perform its
                duties or obligations hereunder if such is due to causes beyond
                its reasonable control, including, but not limited to, acts of
                God, acts of civil or military authorities, fires, floods,
                windstorms, earthquakes, strikes or labor disturbances, civil
                commotion, delays in transportation, governmental delays or war,
                provided nothing in this subparagraph shall limit or otherwise
                modify or waive Tenant's obligation to pay Base Rent and
                Additional Rent as and when due pursuant to the terms of this
                Lease, or Landlord's obligation to timely make any payments
                which Landlord is required to make to Tenant pursuant to this
                Lease.

        h.      RULES AND REGULATIONS. Tenant shall faithfully observe and
                comply with such commercially reasonable, non-discriminatory
                "Rules and Regulations" as Landlord may from time to time adopt
                by written notice. Landlord shall not be responsible to Tenant
                for the violation or non-performance by any other tenant or
                occupant of the buildings or Project of said tenant or
                occupant's lease or of any of said Rules and Regulations.

        i.      LANDLORD'S SUCCESSORS. In the event of a sale or conveyance by
                Landlord of the Project, the same shall operate to release
                Landlord from any liability under this Lease from and after the
                date of the sale or conveyance, and in such event Landlord's
                successor in interest shall be solely responsible for all
                obligations of Landlord under this Lease.

        j.      INTERPRETATION. This Lease shall be construed and interpreted in
                accordance with the laws of the state in which the Premises are
                located. This Lease constitutes the entire agreement between the
                parties with respect to the Premises and the Project, except for
                such guarantees or modifications as may be executed in writing
                by the parties from time to time. When required by the context
                of this Lease, the singular shall include the plural, and the
                masculine shall include the feminine and/or neuter. "Party"
                shall mean Landlord or Tenant. If more than one person or entity
                constitutes Landlord or Tenant, the obligations imposed upon
                that party shall be joint and several. The enforceability,
                invalidity or illegality of any provision shall not render the
                other provisions unenforceable, invalid or illegal.

        k.      CLEAN AIR ACT. Tenant acknowledges that Landlord has not made
                any portion of the Premises or Tenant's Buildings accessible for
                smoking in compliance with WAC 296-62-12000. If Tenant wishes to
                make any portion of the Premises accessible for smoking, Tenant
                shall make all improvements necessary to comply with all
                applicable governmental rules and regulations. Tenant
                acknowledges that the indemnity contained in Section 15 of the
                Lease includes, but is not limited to claims based on the
                presence of tobacco smoke as a result of the activities of
                Tenant, its employees, agents, or guests.

29.     OPTION TO EXTEND. So long as Tenant is not in material default under the
        terms of the Lease, Tenant shall have the right to extend the term of
        the Lease for two (2) additional terms of five (5) years each (the


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<PAGE>   19

        "Extension Terms"). Tenant agrees to notify Landlord in writing of
        Tenant's intent to renew not more than twenty-four (24) and not less
        than eighteen (18) months prior to the termination of the then current
        lease term. The rental rate during the Extension Terms shall be equal to
        the then Fair Market Rental Rate (adjusted for lease concessions) for
        comparable space located in Lower Queen Anne, Seattle, Washington.

        Within thirty (30) days following Tenant's notice to Landlord of
        Tenant's desire to extend the Lease, Landlord shall notify Tenant of the
        proposed Extended Term Base Rent, which shall be equal to the then Fair
        Market Rental Rate of the Premises. Fair Market Rental Rate shall be
        defined as the annual Base Rent (projected in reference to the date of
        the commencement of the payment of annual rental to which it applies)
        which Tenant would expect to pay and Landlord would expect to receive
        under leases of space of comparable size and quality to the Premises and
        as provided for in and on terms and conditions comparable to, this Lease
        covering premises similar to the Premises. Tenant shall have thirty (30)
        days following receipt of Landlord's notice of the proposed Extended
        Term Base Rent, in which to accept such determination; or to agree with
        Landlord on a stipulated Fair Market Rental Rate.

        If Tenant notifies Landlord, within the aforesaid thirty (30) day
        period, that Tenant disputes the Prevailing Market Rate quoted by
        Landlord, the parties shall, during the following thirty (30) days,
        negotiate in good faith to determine the Annual Base Rent for the
        renewal Term. If within said thirty-day period the parties are unable to
        agree on the Annual Base Rent, then within ten (10) days thereafter,
        each party shall select a qualified appraiser experienced in appraising
        commercial rental properties in the vicinity of Tenant's Buildings, who
        shall submit appraisals for the Premises within thirty (30) days of
        their appointment. If the difference between the appraisals is five
        percent (5%) or less, the Prevailing Market Rate shall be determined to
        be the average of the two appraisals. If the difference is greater than
        five percent (5%), then the two appraisers shall select a third
        qualified appraiser who shall submit an appraisal within the thirty (30)
        days following the submission of the first appraisals. The Prevailing
        Market Rate shall then be the average of the two (2) closest appraisals.
        The fees of each appraiser shall be paid by the party appointing the
        appraiser and the fees of the third appraiser, if any, shall be shared
        equally by the parties.

        The option shall be void if, at the time of exercise of such option,
        Tenant is not in possession of the Premises or is in default under this
        Lease or if Tenant fails to deliver the requisite notice thereof within
        the time period specified above. The option granted herein shall not be
        severed from this Lease, separately sold, assigned, or transferred.

30.     RENT ABATEMENT. Notwithstanding anything to the contrary contained
        herein, Tenant shall not be liable for the payment of Annual Base Rent
        or Tenant's Share of Operating Costs for that 28,741 square feet of
        rentable area of the Premises identified as Floor 3 of Building Three
        (Rental Abatement Space), for the period commencing with the
        Commencement Date applicable to such floor and ending on the earlier of
        (a) the commencement of month thirteen (13) after said Commencement Date
        or (b) the date that Tenant takes beneficial occupancy of the Rental
        Abatement Space. Should Tenant occupy less than the full floor prior to
        the commencement of month thirteen (13), then the Annual Base Rent and
        Tenant's Share of Operating Costs set forth for the Rental Abatement
        Space shall be charged only for that portion of the Rental Abatement
        Space being occupied. Tenant covenants and agrees to notify Landlord
        immediately at such time as Tenant occupies the Rental Abatement Space.
        As used herein, "occupancy" means any use of the floor by Tenant for
        other than installation of furniture, fixtures and equipment;
        "occupancy" shall include use of the floor for storage or any other
        business use. Upon commencement of the thirteenth (13th) month after the
        lease Commencement Date for the Rental Abatement Space, the full rent as
        provided for in this Amended and Restated Lease, shall be due and
        payable no matter how much of the Rental Abatement Space is occupied.

        Tenant shall be permitted to sublease the Rental Abatement Space per the
        terms and conditions of Section 19, Assignment or Sublease, and such a
        sublease shall not constitute occupancy of the Rental Abatement Space as
        used within this Section 30. If the Rental Abatement Space is subleased,
        the rental abatement with respect to the subleased area shall provide
        only for abatement of Annual Base Rent and Tenant shall be responsible
        for Tenant's Share of Operating Costs.

        It is anticipated that Tenant will complete its tenant improvements per
        the terms of Section 31, Tenant Improvement Allowance, and Exhibit F,
        Tenant Work Letter, for its entire Premises in a continuous fashion.
        However, Tenant may elect to delay the improvements to the Rental
        Abatement Space. If Tenant does delay said improvements, Tenant shall
        provide Landlord six (6) months prior written notice of the desired
        occupancy date in order to allow for the completion of tenant
        improvements of the Rental Abatement Space.

31.     TENANT IMPROVEMENT ALLOWANCE. Landlord shall provide Tenant with an
        allowance (the "Tenant Improvement Allowance") of up to Thirty Dollars
        ($30.00) per Rentable Square Foot of the Premises. The Tenant
        Improvement Allowance may be used only for actual out-of-pocket costs of
        labor and materials (including Washington State Sales Tax), and for all
        professional design services necessary for the design and permitting of
        the Tenant Work, provided by qualified third party contractors approved
        by Landlord for construction of the Tenant Work, which approval will not
        be unreasonably withheld, delayed or conditioned. The Tenant Work and
        method of payment is set forth in Exhibit F hereto.

32.     ARCHITECTURAL AND ENGINEERING SERVICES. Landlord shall provide Tenant
        with an allowance for schematic space plans performed by an approved
        space planner up to a maximum amount of $.12 per rentable square foot of
        the Premises. This design allowance shall be paid by Landlord within
        twenty (20) days after invoice by Tenant with reasonable documentation
        showing costs actually incurred.

33.     [Intentionally Deleted]


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<PAGE>   20

34.     RIGHT OF FIRST OFFER. So long as Tenant is not in material default under
        the terms of the lease, then during the term of this Lease and any
        extensions thereof, Tenant shall have a Right of First Offer (ROFO) to
        lease additional space as follows:

        This ROFO shall be subject to expansion and extension rights of other
        tenants of the Project existing as of March 30, 2000, and to the right
        of any tenant to renew its lease for its then-existing premises. Except
        as provided in the preceding sentence, this ROFO shall apply (i) to any
        space coming vacant in the Project, and, (ii) if Landlord, in its sole
        discretion develops any additional buildings in the Project, to any
        space in such new buildings (collectively "ROFO Space").

        At such time as Landlord intends to offer ROFO Space for lease, Landlord
        shall so notify Tenant, which notice shall include the description of
        the ROFO Space, and the terms (rate, term, etc.) on which Landlord
        intends to offer the ROFO Space. Tenant shall have ten (10) business
        days from receipt of such notice to notify Landlord that Tenant agrees
        to enter into a lease for the ROFO Space on the terms stated in
        Landlord's notice or to enter into a lease for the ROFO Space on such
        other terms as may be mutually agreeable to Landlord and Tenant in their
        sole discretion. Unless otherwise agreed between Landlord and Tenant,
        Tenant's lease must be of the entire ROFO Space being offered. If Tenant
        does not enter into a lease for the ROFO Space as provided above, this
        Right of First Offer shall immediately and without further action by
        Landlord terminate as to the ROFO Space being offered. This Right of
        First Offer shall be personal to Tenant and shall not be exercisable by
        any assignee or sublessee, except an assignee/successor to Tenant's
        business by merger or acquisition. Tenant shall be free during any
        ongoing period in which the ROFO Space remains unleased to request that
        Landlord re-open discussions with Tenant, which Landlord shall do,
        subject to any ongoing discussions that Landlord may then or thereafter
        engage in with other prospective tenants.

35.     RIGHT TO TERMINATE AS TO BUILDING TWO. So long as Tenant is not in
        material default under the terms of this Lease, Tenant shall have a one
        time right (the "Early Termination Right") to terminate the Lease as to
        Building Two effective on July 31, 2007 (the "Early Termination Date")
        subject to the conditions contained in this Section. In order to
        exercise its Early Termination Right, Tenant shall provide Landlord with
        written notice ("the Notice") by July 31, 2006 (at least twelve (12)
        months' notice). If Tenant exercises its Early Termination Right, Tenant
        shall, within thirty (30) days of delivery of the Notice to Landlord,
        pay to Landlord Landlord's unamortized costs (based upon a twelve (12)
        year amortization period and an interest rate of eight percent (8%) per
        annum) including, but not limited to, the Tenant Improvement Allowance,
        Schematic Space Plan Allowance and real estate commissions in connection
        with the initial lease of Building Two to Tenant (the "Unamortized
        Costs"). If Tenant exercises its Early Termination Right, it shall be
        obligated to perform all obligations under the Lease and pay all amounts
        due under the Lease through the Early Termination Date, provided only
        that if during the period between the Notice and the Early Termination
        Date, Landlord enters into a lease with a third party for all or a
        portion of Building 2 and Landlord and Tenant agree on an earlier
        termination of the Lease with respect to such space such that the third
        party lease can commence prior to the Early Termination Date, then the
        Early Termination Date with respect to such space shall be accelerated
        to the date agreed between Landlord and Tenant, and Tenant's obligations
        for the period between such accelerated Early Termination Date and the
        originally-scheduled Early Termination Date with respect to such space
        shall be the amounts that would have been due from Tenant during such
        period reduced by the amount of base monthly rent and additional rent
        actually paid to Landlord by the third party tenant net of Landlord's
        amortization (over the term of the new lease) of Landlord's costs of
        obtaining the new lease, including but not limited to new tenant
        improvements, commission, and space planning. On the Early Termination
        Date (or Dates, if there is additional acceleration due to releasing as
        provided above) the Lease shall terminate with respect to the affected
        spaces (and ultimately all of Building Two) as by expiration of its
        term, and those terms of the Lease dependent on the leasing of Building
        Two (e.g. Base Monthly Rent, Tenant's Share of Expenses, Parking) shall
        be adjusted to reflect the deletion from the Lease of the applicable
        rentable Square Footage of Building Two.

        Tenant may exercise its Early Termination Right under any of the
        following conditions:

        a.      CONTRACTION OF THE PREMISES. If Tenant wishes to occupy a
                smaller premises within Building Two, Tenant shall submit a
                written request to Landlord, within thirty (30) days of the
                Notice, to have the size of the Premises within Building Two
                reduced to the size specified by Tenant. Landlord will notify
                Tenant of its decision whether to grant Tenant's request within
                sixty (60) days of receipt of such request. If Landlord elects
                to reduce the size of the Premises, Tenant will be required to
                pay Landlord's Unamortized Costs, as described above, within
                thirty (30) days of Landlord's notice that it will allow the
                size of the Premises within Building Two to be reduced, provided
                that the amount of such Unamortized Costs shall be prorated
                based on the size of the reduced Premises within Building Two.
                If Landlord declines Tenant's request so to reduce the Premises,
                then Tenant may exercise its Early Termination Right as
                described above.

        b.      CESSATION OF BUSINESS. Tenant or any successor entity ceases
                having its main administrative offices in the Seattle-Bellevue
                Metropolitan area.

        Tenant and Landlord agree that this Early Termination Right is not to be
        used to facilitate the move of Tenant from 401 Elliott West to another
        building in the Seattle-Bellevue Metropolitan area prior to the end of
        the initial Lease term except as stated in this Section.

36.     EARLY POSSESSION. Tenant shall have the non-exclusive right to possess
        the Premises thirty (30) days prior to the Commencement Date for each
        applicable Phase for the purpose of the installation of Tenant's
        furniture, fixtures and equipment. Tenant shall not be charged base
        monthly rent or operating expense charges for such Phase during said
        Early Possession period. Tenant shall coordinate its move-in activities


                                       20
<PAGE>   21

        with the contractor's working on the site so as not to impede the final
        completion of the Shell & Core Improvements, including punch list type
        activities. Tenant shall be responsible for the removal and disposal of
        Tenant's furniture and fixture vendor's cartons and trash.

37.     TENANT SIGNAGE. Tenant shall have the right, at Tenant's expense, to
        install dominant building signage on Tenant's Buildings as long as it
        leases in excess of fifty percent (50%) of the rentable area of each of
        Tenant's Buildings. Tenant's signage shall be subject to all
        governmental codes and Landlord's prior written approval, which approval
        will not be unreasonably withheld, delayed or conditioned for signage
        consistent with the Landlord's architectural principles for the Project.
        Landlord shall have the right to withhold its approval of any sign(s)
        which in its reasonable judgment are not harmonious with the design
        standard of the Buildings. A signage exhibit, providing more detail to
        size and location, is further detailed in Exhibit D. Tenant shall have
        the following signage opportunities:

        a.      Install one sign on the Building Two marquee above the entry on
                the south side of the Building.

        b.      Install two exclusive, back lighted, pin-mounted signs on the
                top parapet of each of Tenant's Buildings; one sign per wall, on
                the South, West or East elevations (i.e. 2 of those three
                walls).

        c.      Install identity graphics on the exterior walls of the Building
                Two garage elevator lobby.

38.     FIBER OPTICS. Tenant shall have the right to install satellite dishes,
        fiber optics and related equipment for Tenants sole use at Tenant's sole
        cost, expense and liability, subject to Landlord's approval of the
        location and method of installation, which shall not be unreasonably
        withheld or delayed for installations that do not interfere with other
        electronic installations on the Buildings. Tenant's rights pursuant to
        this Section shall include the right to make reasonable replacements,
        upgrades and additions subject to the terms of this Section.

39.     USE OF THE ROOF FOR BUSINESS PURPOSES. Tenant shall have the right to
        enter on the roof of Tenant's Buildings from time to time, in accordance
        with the provisions of this Section and with the prior approval of
        Landlord, for the purpose of installing and maintaining, at Tenant's
        sole cost and expense, equipment in connection with Tenant's use of the
        Premises (the "Tenant's Equipment") at locations, designated by
        Landlord. Tenant shall submit drawings, specifications, and installation
        data for Tenant's Equipment to Landlord for its approval prior to
        installation.

        Installation of Tenant's Equipment shall be accomplished under the
        direct supervision of Landlord and in accordance with reasonable rules
        and regulations prescribed by Landlord. Tenant's Equipment shall be
        grounded in accordance with Underwriters Laboratories, Inc.
        requirements.

        Tenant shall make no penetration of Tenant's Buildings' roof during
        installation or removal of Tenant's Equipment without the prior written
        consent of Landlord. Tenant shall be responsible for the cost of
        repairing all damages to Landlord's property caused by the installation,
        operation, repair, or removal of Tenant's Equipment, except to the
        extent caused by Landlord, its contractors, or employees. Furthermore,
        in the event Landlord determines that either of Tenant's Buildings roof
        must be repaired or resealed as a direct or indirect result of the
        installation, maintenance, repair, or removal of Tenant's Equipment,
        except to the extent caused by Landlord, its contractors, or employees,
        all such repairing and/or resealing shall be performed by Landlord's
        designated contractor at Tenant's sole cost and expense.

        Upon termination of this Lease, Tenant, at its sole cost, shall remove
        Tenant's Equipment from the roof of Tenant's Buildings, subject to the
        provisions of this Section. Removal of Tenant's Equipment shall be done
        in a manner satisfactory to Landlord.

        If access to Tenant's Buildings roof is required by Tenant at times
        other than normal business hours, Landlord reserves the right to charge
        Tenant any actual costs incurred by Landlord for overtime wages to
        Landlord's employees or contractors.

        Tenant shall obtain and maintain all necessary FCC licenses, if any, and
        all other governmental approvals, licenses, and permits required to
        operate Tenant's Equipment, which operation shall not interfere with the
        quiet enjoyment of the tenants within Tenant's Buildings.

        Tenant agrees that Landlord hereafter shall have the right to install
        and to grant others the right to install transmitting equipment,
        satellite dishes, antennae, and similar equipment on the roof of
        Tenant's Buildings, so long as neither the installation nor operation of
        such equipment interferes with the operation of Tenant's Equipment.

        Tenant agrees that transmissions from Tenant's Equipment shall not cause
        interference with transmissions of other persons currently operating
        communications equipment in the Business Community. Upon written
        notification from Landlord of such interference, Tenant shall
        immediately stop operation of Tenant's Equipment and not resume
        operation until such interference is cured. Any future agreement
        granting another tenant of Tenant's Buildings or any other person the
        right to make rooftop installations shall contain a covenant by such
        other tenant or person that its installation and operation of rooftop
        equipment will not interfere with the operation of Tenant's Equipment,
        and that if such interference occurs, such other tenant or other user
        shall cease installation or operation of its equipment until such
        interference is cured.

40.     [INTENTIONALLY DELETED].

41.     TENANT PARKING. Notwithstanding the provisions of Section 11.a
        designating parking as non-exclusive,


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<PAGE>   22

        four (4) parking spaces located under the footprint of Building Two and
        five (5) parking spaces located under the footprint of Building Three,
        all reasonably close to the respective Building's elevator may be
        reserved by Tenant to be designated as F5 Network spaces and shall be
        counted against the parking stalls allocated to Tenant pursuant to
        Section 11.a.

42.     EMERGENCY POWER GENERATOR. The Premises shall include an electrical
        generator pad located by Landlord at the exterior of Building Three west
        of the loading dock area (the "Generator Pad"). The Generator Pad shall
        be constructed by Tenant in accordance with plans approved in advance by
        Landlord, which approval will not be unreasonably withheld, delayed or
        conditioned, and which plans shall include fencing and such curbing as
        is necessary to contain any fuel spill. Tenant may install on the
        Generator Pad a backup generator and fuel tank (collectively the
        "Generator"), the make, model and design of which shall be subject to
        Landlord's prior approval, which approval will not be unreasonably
        withheld, delayed or conditioned. The design and operation of the
        Generator and Generator Pad shall be such as to avoid material
        interference with other tenants (whether due to vibration, noise, fumes,
        or otherwise) resulting from operation of the Generator. The Generator
        shall be used only for periodic testing and in the event Tenant's
        primary electrical service is interrupted for any reason. All testing
        shall take place at times reasonably selected to minimize interference
        with other tenants. The Generator shall be used only for backup power,
        and may not be used as a primary power source, nor may it be used by any
        occupant of any other premises. The Generator Pad and the Generator
        shall be subject to all terms and conditions of this Lease, including
        but not limited to Sections 8, 15, and 16, provided only that the square
        footage of the Generator Pad shall not be utilized in calculating the
        Premises Rentable Area for the purpose of calculating Base Rent or
        allocating Expenses between the Premises and any larger parcel. Upon
        expiration or earlier termination of this Lease, Tenant shall remove all
        improvements and equipment from the Generator Pad and shall restore same
        to a clean, paved condition, and shall provide such studies or other
        information as is necessary to demonstrate to Landlord's reasonable
        satisfaction that there has been no environmental contamination on the
        Generator Pad as a result of the storage and operation of the generator
        and fuel tank thereon.

IN WITNESS WHEREOF, Landlord and Tenant have executed this Lease as of the day
and year first above written.

Landlord:         401 ELLIOTT WEST L.L.C.

                  By:    CHERLIN L.L.C.,
                  Its:   Manager and Member


                  By: /s/ RICHARD L. CARSON
                     ------------------------------
                          Richard L. Carson
                  Its:  Managing Member

                  By:    KMC-ONE, L.L.C.
                  Its:   Member

                  By: /s/ STEPHEN K. KOEHLER
                     ------------------------------
                       Stephen K. Koehler, President, Koehler McFadyen & Company
                  Its: Managing Member


Tenant:           F5 NETWORKS, INC.


                  By:  /s/ ROBERT J. CHAMBERLAIN
                     ------------------------------
                  Its: VP FINANCE - CFO
                      -----------------------------


                  By:
                     ------------------------------
                  Its:
                      -----------------------------



                                       22
<PAGE>   23


STATE OF WASHINGTON         )
                            )ss.
COUNTY OF KING              )


        I certify that I know or have satisfactory evidence that RICHARD L.
CARSON and STEPHEN K. KOEHLER are the persons who appeared before me, and said
persons acknowledged that they signed this instrument, on oath stated that they
were authorized to execute the instrument and acknowledged it as the Managing
Member on behalf of CHERLIN LLC and KMC-ONE LLC and Member of 401 ELLIOTT WEST
LLC to be the free and voluntary act of such party for the uses and purposes
mentioned in the instrument.

                    Dated: 6-01-01


                                          /s/ POLLY P. HUTCHINSON
                                         ---------------------------------------
                                         (Signature)


                                         Polly P. Hutchinson
                                         ---------------------------------------
                                         (Print Name)
                                         Notary Public, in and for the State
                                         of Washington, residing at Carnation
                                         My Commission Expires 6-01-01



STATE OF WASHINGTON         )
                            )ss.
COUNTY OF KING              )


        I certify that I know or have satisfactory evidence that ROBERT J.
CHAMBERLAIN is the person who appeared before me, and said persons acknowledged
that they signed this instrument, on oath stated that they were authorized to
execute the instrument and acknowledged it as the CFO and V.P. FINANCE of F5
NETWORKS, INC. to be the free and voluntary act of such party for the uses and
purposes mentioned in the instrument.

                    Dated: 04/03/00


                                          /s/ BRIAN R. DIXON
                                         ---------------------------------------
                                         (Signature)


                                         Brian R. Dixon
                                         ---------------------------------------
                                         (Print Name)
                                         Notary Public, in and for the State
                                         of Washington, residing at Seattle, WA.
                                         My Commission Expires 07-01-00




                                       23




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