THIRD AMENDMENT TO SERVICE CENTER LEASE
       1.
    
    Recitals. The Recitals contained herein are true and correct and incorporated herein
by
this reference. Capitalized terms not otherwise defined herein, in the Recitals, or the
preamble, shall have the meanings ascribed to them under the Lease, as amended hereby.2.
    
    Renewal Term. Tenant and Landlord hereby extend and renew the Lease for an
additional five (5) year period, commencing on December 1, 2010 and terminating on
November 30, 2015 (Renewal Term).3.
    
    Leased Premises. Section 1.1 of the Lease is hereby deleted in its entirety and
replaced
with the following:
 1.1 Demise of Leased Premises. Landlord, in
consideration of the rents and of the terms and conditions
hereinafter contained, does hereby lease to Tenant, and Tenant does
hereby rent from Landlord the space containing approximately 57,997
rentable square feet in the aggregate (Leased Premises). The Leased
Premises is located in seven (7) suites as follows:




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(i)
    
    Suite 1836A containing 8,139 rentable square feet in Meadows
Corporate Center II;(ii)
    
    Suite 1836B containing approximately 4,430
rentable square feet in Meadows Corporate Center II;(iii)
    
    Suite 1828 containing approximately 9,500
rentable square feet in Meadows Corporate Center II;(iv)
    
    Suite 1842 containing approximately 8,636
rentable square feet in Meadows Corporate Center II;(v)
    
    Suite 1844-46 containing approximately 11,636
rentable square feet in Meadows Corporate Center II (Expansion Space);(vi)
    
    Suite 1884-7 containing approximately 9,361
rentable square feet in Meadows Corporate Center IV (Suite 1884-7);
and(vii)
    
    Suite 1884-4 containing approximately 6, 295 square feet in Meadows
Corporate Center IV (Suite 1884-4, and collectively with Suite 1884-7,
the Transition Space).
 Effective as of December 1, 2010, the Leased Premises shall also
include Suite 1848 containing approximately 8,575 rentable square
feet in Meadows Corporate Center III (Suite 1848), for an
aggregate total of 66,572 square feet. Meadows Corporate Center II,
Meadows Corporate Center III, and Meadows Corporate Center IV are
located at Lackland Hills Parkway, St. Louis, Missouri 63146 (each
a Building, and collectively Buildings). The Buildings are part
of a three (3) building service center complex commonly known as
The Meadows Corporate Center (collectively the Project). The
Property is the land upon which the Project is located and is
described on Exhibit A and the floor plans of the Leased Premises
are attached as Exhibit B and incorporated by reference.
 4.
    
    Base Rent. Notwithstanding anything to the contrary contained in the Lease,
commencing December 1, 2010, Tenant shall pay Base Rent to Landlord in the amount as
follows:
 Period
    
    Base Rent per SF
    
    Monthly Base Rent
    
    Annual Base Rent12/1/2010-11/30/2012
    
    $
    10.50
    
    
    $
    58,250.50
    
    
    $
    699,00612/1/2012-11/30/2014
    
    $
    11.00
    
    
    $
    61,024.33
    
    
    $
    732,29212/1/201-11/30/2015
    
    $
    11.50
    
    
    $
    63,798.17
    
    
    $
    765,578
 2




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TM Properties, L.L.C. 4678 World
Parkway Circle St. Louis,
Missouri 63134
 5.
    
    Proportionate Share. Section 3.4 of the Lease is hereby deleted in its entirety
and
replaced with the following:
 3.4Proportionate Share.Tenants Proportionate Share
as used in this Lease shall be obtained by multiplying the expense
in question by a fraction, the numerator of which shall be the
rentable square footage area of the Leased Premises, and the
denominator of which shall be the rentable square feet of the
Project, which for purposes of this Lease shall be stipulated to be
132,994 rentable square feet. For purposes of this Lease, Tenants
Proportionate Share is 43.6% (57,997 rentable square feet divided by
132,994 rentable square feet). Effective as of December 1, 2010,
Tenants Proportionate Share is 50.05% (66,572 rentable square feet
divided by 132,994 rentable square feet).
 6.
    
    Project. The terms Property and Building found in Sections 3.5(b), 3.6, and 4.4
of
the Lease are hereby deleted and replaced with the term Project.7.
    
    Real Property Taxes and Insurance. Commencing on December 1, 2010, Section 3.5(a)
of the Lease is hereby deleted in its entirety and replaced with the following:
 3.5Real Property Taxes and Insurance. (a) Beginning
December 1, 2010, Tenant shall pay as Additional Rent, Tenants
Proportionate Share of the amount by which Real Property Taxes (as
defined in Section 3.5(b)) and Insurance (as defined in Section 3.6)
payable during each calendar year falling entirely or partly within
the Lease Term exceed the Expense Stop Amount as defined in Section
3.9. Tenant shall make estimated monthly payments to Landlord on
account of the amount by which Real Property Taxes and Insurance
that are expected to be paid during each calendar year would exceed
the Expense Stop Amount. Beginning December 1, 2010 and at the
beginning of each calendar year thereafter, Landlord may submit a
statement setting forth Landlords reasonable estimate of such
excess and Tenants Proportionate Share thereof. Tenant shall pay to
Landlord on the
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first day of each month following receipt of such statement,
until Tenants receipt of the succeeding annual statement, an
amount equal to one-twelfth (1/12th) of such share.
 8.
    
    Expense Stop Amount. Section 3.9 of the Lease is hereby deleted in its
entirety and
replaced with the following:
 3.9Expense Stop Amount.For purposes of this Lease,
Expense Stop Amount shall be defined as Tenants Proportionate Share
of the actual expense incurred for Real Property Taxes and Insurance in
the calendar year 2010.
 9.
    
    Common Expenses. The following shall be added to the end of Section 4.4 of the
Lease:
; and management fees paid by Landlord.10.
    
    Option to Extend Term. Section 2.4 of the Lease is hereby deleted in its entirety
and
replaced with the following:
 2.4 Option to Extend Term.Provided Tenant is not in default
in any of the terms, conditions or covenants of this Lease either on the
date Tenant gives Landlord the renewal notice required herein or at the
end of the Renewal Term, Landlord hereby grants to Tenant an option to
renew (Option to Renew) this Lease for one (1) additional period of
five (5) years upon the same terms and conditions contained in the Lease,
except that Base Rent and any tenant improvement allowance shall be
negotiated in good faith by both Landlord and Tenant upon market terms
changed by similar properties in the Westport submarket at the time the
Option to Renew is exercised. The Option to Renew must be exercised by
Tenant giving written notice to Landlord during the period between
November 30, 2014 and February 28, 2015. All other terms of this Lease
shall remain the same. As used throughout this Lease, any reference to
the lease term, term, or term of this Lease shall also include any
and all renewal terms and the Renewal Term.
 11.
    
    Right of First Opportunity.
 (a)
    
    The first sentence of Section 2.5 is hereby deleted in its entirety and
replaced with the following:2.5Right of First Opportunity.Subject to all other
options held by existing tenants of the Buildings and provided that
Tenant is not in default hereunder at the time of Tenants exercise
of this option, Tenant shall have a one-time right of first
opportunity (the Right of First Opportunity) to lease any
contiguous space to the Leased Premises located in Meadows
Corporate Center III (the
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ROFO Space), if and when such space becomes available during
the Term of this Lease, on the following terms and conditions:(b)
    
    Section 2.5(i) of the Lease is hereby deleted in its entirety and
replaced with the following:(i) Landlord shall notify Tenant of the available ROFO Space prior
to offering such ROFO Space to any other party and set forth the terms
and conditions upon which Landlord is willing to lease the ROFO Space to
Tenant (Landlords Notice). Tenant shall have five (5) days from the
receipt of Landlords Notice to exercise the Right of First Opportunity
by sending written notice to Landlord of its intent to lease the ROFO
Space upon the terms and conditions in Landlords Notice (the Leased
Expansion Space). Tenant shall be deemed to have declined a lease for
the ROFO Space if its acceptance is delayed or if the acceptance changes
any material term or condition of the Landlords Notice.
 12.
    
    Tenant Improvements. A new Section 27 is hereby added to the
Lease:
 27Tenant Improvements.(a) Preliminary Space Plan. Tenant shall prepare and provide a
preliminary space plan to Landlord to be mutually approved by
Landlord and Tenant showing the size, nature and location of the
improvements to be constructed in Leased Premises (the Tenant
Improvements). Promptly following execution of this Lease,
Tenant shall meet with an architect approved by Landlord and shall
provide such information and make such selections as may be
necessary for the expeditious completion of the planning process.(b) Working Drawings. Based upon the preliminary space plan
and the information provided and selections made by Tenant,
Landlord shall cause working drawings and specifications
(collectively, the Plans) to be prepared for the Tenant
Improvements. The Plans shall be consistent with the Building
design standards as established by Landlord (unless a departure
therefrom is approved by both parties). Tenant shall contract
directly with the architect to prepare the Plans. The cost for the
Plans shall be paid out of the tenant improvement allowance of
$250,000 (Tenant Improvement Allowance). The Plans shall be
subject to the reasonable approval of both parties. Except as
specifically noted on the approved Plans, all materials and finishes
shall be those established as the building standard by Landlord.(c) Cooperation. During the entire course of the process described
above, both Landlord and Tenant shall review and respond to
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submissions by the other party with reasonable dispatch. Tenant shall
respond with its approval or comments within five days after receipt of initial
drawings, specifications, or other materials requiring Tenants review and
within three days after receipt of revised versions of such documents or
materials. From time to time at the request of either party, Landlord and Tenant
shall devise, and revise as necessary, working schedules for the preparation of
the Plans and the construction of the Improvements. Tenant shall not permit any
supplier, installer, contractor, or other person employed by Tenant to
materially interfere with the progress of the work and any access shall be
subject to scheduling with Landlord and in compliance with all of Landlords
requirements.(d) Construction. Landlord shall solicit at least three (3)
competitive bids for a general contractor and shall consult with
Tenant as to the most qualified, competitive bidder to be selected.
Landlord shall cause the general contractor to construct the Tenant
Improvements within the Leased Premises set forth in the
approved Plans in a good, workmanlike manner and in substantial
accordance with the Plans.(e) Change Order. If Tenant requests any changes to the Tenant
Improvements, Landlord shall advise Tenant prior to making such
changes as to the estimated cost to perform such change and the
estimated delay, if any, in the date for Substantial Completion
estimated to be caused by such change. If the change order
requires any additional payment by Tenant, Tenant shall pay the
same to Landlord within ten (10) days after receipt of the change
order.(f) Cost. Prior to commencement of construction of the Tenant
Improvements, Tenant shall pay to Landlord the amount, if any, by
which the estimated Costs of Construction exceed the Tenant
Improvement Allowance. Any difference between actual and
estimated Costs of Construction shall be paid or refunded, as the
case may be, within ten days after receipt of Landlords statement
calculating the amount due. Any unused portion of the Tenant
Improvement Allowance shall not be used as a rent credit or
otherwise and will no longer be available to Tenant if not used by
December 31, 2010. Costs of Construction of the Tenant
Improvements means all costs and expenses incurred by Landlord
to design and build the Tenant Improvements, including, without
limitation, permit and inspection fees, management and
supervision fees equal to five percent (5%) of all expenses for
which the Tenant Improvement Allowance was utilized, taxes,
amounts paid to contractors, subcontractors, and suppliers,
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architects fees, engineering costs, premiums for bonds and
insurance, utilities, equipment rental, demolition, labor, materials,
and supplies. Tenant may use a portion of the Tenant Improvement
Allowance in an amount not to exceed $51,000 towards the purchase of
cubicles, furniture, equipment and move-related expenses for the
Premises. The Tenant Improvement Allowance may not be used towards the
payment of Rent.(g) Substantial Completion (or similar derivations) of the Tenant
Improvements shall mean that stage of the Tenant Improvements when the
Tenant Improvements are sufficiently complete in accordance with the
approved Plans so that Tenant can occupy and utilize the Leased Premises
for its intended purpose, with only a limited number of minor punchlist
items remaining to be completed or corrected and which do not
unreasonably interfere with Tenants use of the Leased Premises.
 13.
    
    Transition Space: A new Section 28 is hereby added to the Lease:
 28. Transition Space. Effective as of December 1, 2010, the
Transition Space shall be leased on a month-to-month basis upon the same
terms and conditions of this Lease, including Base Rent. Either party may
terminate all or a portion of the Transition Space upon thirty (30) days
prior written notice to the other party (Termination Notice). Tenant
shall execute and deliver to Landlord within thirty (30) days of the
Termination Notice an amendment to the Lease prepared by Landlord which
(a) removes the Transition Space from the Leased Premises, (b) decreases
the rentable area of the Leased Premises by the rentable area of the
Transition Space and decreases Tenants Proportionate Share accordingly,
and (c) makes such other modifications of affected portions of this Lease
consistent with the foregoing.
 14.
    
    Expansion Space and Suite 1848: A new Section 29 is hereby added to the Lease:
 29. Expansion Space and Suite 1848. Notwithstanding anything to the
contrary contained in the Lease, Landlord shall at its expense make any
improvements or alterations to the Expansion Space and Suite 1848 that
are specifically required by governmental officials to conform with
applicable laws, ordinances, regulations, and the ADA in connection with
Tenants initial occupancy of the Expansion Space and Suite 1848 only.
 15.
    
    Interior Construction. Section 26.5 of the Lease and Exhibit F of the Lease are
hereby
deleted in their entirety.
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16.
    
    Notices: Landlords and Tenants notice addresses as provided in
Article XVII of the Lease are hereby deleted and replaced with the following:
 If to Landlord:Thomas R. Martin Duke Realty
Corporation 520 Maryville Centre
Drive Suite 200 St. Louis, MO
63141With a copy to:Cassidy Turley
1884 Lackland Hill Parkway, Suite 2
St. Louis, MO 63146If to Tenant:Mr. Allen Weiss
VP, Procurement
Office of the COO
Quality Systems, Inc.
1811 Von Karman Avenue, Suite 600
Irvine, CA 92612
 17.
    
    Exhibits. Exhibit A to the Lease, which is the definition of Property, and Exhibit
B to the Lease, which is the Floor Plan, are hereby replaced by Exhibit A and Exhibit B
attached hereto and incorporated herein by this reference.18.
    
    Ratification. Except as expressly set forth herein, all the terms, covenants and
conditions,
representations and warranties set froth in the Lease shall continue in full force and
effect
and are hereby ratified and affirmed.19.
    
    Authorization. Each of the parties represents and warrants to the other that it is
authorized to enter into this Amendment and has taken all necessary action to approve the
execution of this Amendment.20.
    
    Counterparts. This Amendment may be executed in counterparts, each of which shall
constitute an original.
 [Remainder of Page Intentionally Left Blank; Signature Page Follows]
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LANDLORD:
    
    TENANT:TM Properties, L.L.C.
    
    Quality Systems, Inc.By:
    /s/ Thomas K. Martin
    
    
    By:
    /s/ Phillip N. KaplanName:
    Thomas K. Martin
    
    
    
    Name:
    Phillip N. KaplanTitle:
    Manager
    
    
    
    Title:
    COO
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EXHIBIT A
 Legal Description of Property
 10




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EXHIBIT B
 Floor Plan
 11