PAREXEL INTERNATIONAL CORP
10-Q, 1999-02-10
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>    





                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    FORM 10-Q


             (X) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                                       OR

     ( ) TRANSITION  REPORT  PURSUANT TO SECTION 13 OR 15 (d) OF THE  SECURITIES
            EXCHANGE ACT OF 1934

                For the Quarterly Period Ended December 31, 1998

                         Commission File Number: 0-27058


                        PAREXEL INTERNATIONAL CORPORATION
             (Exact name of registrant as specified in its Charter)

               Massachusetts                           04-2776269
      (State or other jurisdiction of    (I.R.S. Employer Identification Number)
      incorporation or organization)

             195 West Street
          Waltham, Massachusetts                                   02451
  (Address of principal executive offices)                       (Zip Code)

Registrant's telephone number, including area code   (781) 487-9900

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the  preceding 12 months (or for such  shorter  period that the  registrant  was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days. Yes X No ___

Indicate the number of shares  outstanding  of each of the  issuer's  classes of
common stock, as of the latest  practicable  date: As of February 8, 1999, there
were  24,794,179  shares  of  PAREXEL  International  Corporation  common  stock
outstanding.

<PAGE>    







                        PAREXEL INTERNATIONAL CORPORATION


                                      INDEX
                                                                            Page

Part I.    Financial Information

     Item 1     Financial Statements (Unaudited):

                Condensed Consolidated Balance Sheets-- December 31
                and June 30,1998                                              3

                Condensed Consolidated  Statements of Operations -- 
                Three months ended  December 31, 1998 and 1997; Six 
                months ended December 31, 1998 and 1997                       4

                Condensed Consolidated Statements of Cash Flows-- Six 
                months ended December 31, 1998 and 1997                       5


                Notes to Condensed Consolidated Financial Statements          6

     Item 2     Management's Discussion and Analysis of Financial 
                Condition and Results of Operations                           8

                Risk Factors                                                 14

Part II.   Other Information                                                 18

     Item 1     Legal Proceedings                                            18

     Item 4     Submission of Matters to a Vote of Security Holders          18

     Item 6     Exhibits and Reports on Form 8-K                             18

Signatures                                                                   20

Exhibit Index                                                                21






<PAGE>    





Part I.  Financial Information
Item 1 - Financial Statements
<TABLE>
                        PAREXEL INTERNATIONAL CORPORATION
                      CONDENSED CONSOLIDATED BALANCE SHEETS
                        (in thousands, except share data)
<CAPTION>

                                                                                 December 31, 1998       June 30, 1998

                                                                                    (Unaudited)
                                                                                 -----------------      ---------------

<S>                                ASSETS                                                 <C>                 <C>    
Current assets:
 Cash and cash equivalents                                                                $ 62,973            $ 39,941
 Marketable securities                                                                      17,850              37,479
 Accounts receivable, net                                                                  133,199             109,741
 Prepaid expenses                                                                            9,852              11,895
 Other current assets                                                                        9,939              10,674
                                                                                 ------------------    ----------------
      Total current assets                                                                 233,813             209,730

Property and equipment, net                                                                 45,401              45,311
Other assets                                                                                 7,262               6,717
                                                                                 ==================    ================
                                                                                          $286,476            $261,758
                                                                                 ==================    ================
                    LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities:
 Credit arrangements                                                                       $   111             $ 1,413
 Accounts payable                                                                           12,262              10,923
 Advance billings                                                                           59,579              45,273
 Other current liabilities                                                                  31,547              33,184
                                                                                 ------------------    ----------------
     Total current liabilities                                                             103,499              90,793
Other liabilities                                                                            2,804               2,585
                                                                                 ------------------    ----------------
     Total liabilities                                                                     106,303              93,378
                                                                                 ------------------    ----------------

Stockholders' equity:
 Preferred stock - $0.01 par value; shares                                        
   authorized: 5,000,000; none issued and outstanding                                        -                    -
 Common stock - $0.01 par value; shares authorized:
   50,000,000; shares issued: 24,822,291 and 24,657,637 at
   December 31 and June 30, 1998, respectively; shares
   outstanding: 24,792,879 and 24,628,225 at December 31
   and June 30, 1998, respectively                                                             248                 246
 Additional paid-in capital                                                                152,221             149,921
 Retained earnings and cumulative translation adjustment                                    27,704              18,213
                                                                                 ------------------    ----------------
     Total stockholders' equity                                                            180,173             168,380
                                                                                 ==================    ================
                                                                                          $286,476            $261,758
                                                                                 ==================    ================

        See notes to condensed consolidated financial statements.
</TABLE>



<TABLE>

                        PAREXEL INTERNATIONAL CORPORATION
                 CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)
                      (in thousands, except per share data)
<CAPTION>

                                                            For the three months              For the six months
                                                            ended December 31,                ended December 31,
                                                                1998           1997          1998             1997
                                                            --------------  ------------  -------------   -------------
<S>                                                               <C>          <C>           <C>              <C>
Net revenue                                                       $87,855      $67,993       $170,690         $130,984
                                                            --------------  ------------  -------------   -------------


Costs and expenses:
   Direct costs                                                    58,890       44,252         112,627          85,561
   Selling, general and administrative                             17,215       14,089          34,394          27,311
   Depreciation and amortization                                    4,473        3,167           8,715           5,797
   Acquisition-related charges                                          -        4,100               -           4,100

                                                            --------------  ------------  -------------   -------------
                                                                   80,578       65,608         155,736         122,769
                                                            --------------  ------------  -------------   -------------

Income from operations                                              7,277        2,385          14,954           8,215

Other income, net                                                     627          883           1,340           2,041
                                                            --------------  ------------  -------------   -------------

Income before provision for income taxes                            7,904        3,268          16,294          10,256

Provision for income taxes                                          2,763        1,361           5,648           4,010
                                                            --------------  ------------  -------------   -------------

Net income                                                         $5,141       $1,907         $10,646          $6,246
                                                            ==============  ============  =============   =============

Earnings per common share:
   Basic                                                            $0.21        $0.08           $0.43           $0.26
   Diluted                                                          $0.21        $0.08           $0.42           $0.25






   See notes to condensed consolidated financial statements.
</TABLE>




<PAGE>    
<TABLE>

                        PAREXEL INTERNATIONAL CORPORATION
                 CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)
                                 (in thousands)
<CAPTION>

                                                                                                For the six months ended
                                                                                                      December 31,

                                                                                                   1998                 1997
                                                                                               ----------------    -----------------
<S>                                                                                                   <C>                   <C> 
Cash flows from operating activities:
  Net income                                                                                          $ 10,646              $ 6,246
  Adjustments to reconcile net income to net cash
   provided by (used in) operating activities:
    Depreciation and amortization                                                                        8,715                5,797
    Stock compensation charges of acquired company                                                        -                   2,900
    Changes in operating assets and liabilities                                                         (7,060)             (12,344)
                                                                                               ----------------    -----------------

Net cash provided by operating activities                                                               12,301                2,599
                                                                                               ----------------    -----------------

Cash flows from investing activities:
  Purchase of marketable securities                                                                    (30,550)             (46,319)
  Proceeds from sale of marketable securities                                                           50,179               78,073
  Acquisition activities                                                                                  -                  (1,410)
  Dividend paid by pooled entity                                                                          -                  (1,293)
  Purchase of plant and equipment                                                                       (8,754)             (13,862)
                                                                                               ----------------    -----------------

  Net cash provided by investing activities                                                             10,875               15,189
                                                                                               ----------------    -----------------

Cash flows from financing activities:
  Proceeds from issuance of common stock                                                                 2,302                2,118
  Repayments of long-term debt                                                                          (1,246)              (1,754)
                                                                                               ----------------    -----------------

Net cash provided by financing activities                                                                1,056                  364
                                                                                               ----------------    -----------------

Elimination of net cash activities of acquired companies
  for duplicated periods                                                                                  -                     672
                                                                                               ----------------    -----------------

Effect of exchange rate changes on cash and cash equivalents                                            (1,200)                 436
                                                                                               ----------------    -----------------

Net increase in cash and cash equivalents                                                               23,032               19,260

Cash and cash equivalents at beginning of period                                                        39,941               38,592
                                                                                               ----------------    -----------------


Cash and cash equivalents at end of period                                                             $62,973              $57,852
                                                                                               ================    =================

    See notes to condensed consolidated financial statements.
</TABLE>
<PAGE>    



                        PAREXEL INTERNATIONAL CORPORATION
              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)

Note 1 -- Basis of Presentation

The  accompanying  unaudited  condensed  consolidated  financial  statements  of
PAREXEL  International   Corporation  (the  "Company")  have  been  prepared  in
accordance with generally accepted  accounting  principles for interim financial
information and with the  instructions of Form 10-Q and Article 10 of Regulation
S-X. Accordingly,  they do not include all of the information and notes required
by generally accepted accounting  principles for complete financial  statements.
In the opinion of management,  all adjustments  (primarily  consisting of normal
recurring  adjustments)  considered  necessary for a fair presentation have been
included.  Operating  results for the three months ended  December 31, 1998, are
not  necessarily  indicative  of the  results  that may be  expected  for  other
quarters or the entire fiscal year.  The financial  statements for the three and
six month periods ended  December 30, 1997 have been restated to reflect  fiscal
1998 acquisitions  accounted for under the pooling of interests method.  Certain
prior year balances have been  reclassified  in order to conform to current year
presentation.  For  further  information,  refer to the  consolidated  financial
statements and footnotes thereto included in the Company's Annual Report on Form
10-K for the year ended June 30, 1998.

Note 2 -- Earnings per Share

Effective  December  31,  1997,  the  Company  adopted  Statement  of  Financial
Accounting  Standards No. 128,  "Earnings per Share" ("SFAS 128").  Earnings per
share amounts for prior periods  presented  have been restated to conform to the
SFAS 128  requirements.  The  following  table  outlines  the basic and  diluted
earnings per common share computations (in thousands, except per share data):
<TABLE>
                                                   For the three months            For the six months
                                                    ended December 31,             ended December 31,
                                                   1998           1997             1998            1997
                                                 ----------    -----------    -------------    ------------
<S>                                                 <C>            <C>             <C>              <C>
Net income attributable to
     common shares                                  $5,141         $1,907          $10,646          $6,246
                                                 ==========    ===========    =============    ============

Basic Earnings Per Common Share
     Computation:
Weighted average common shares
     outstanding                                    24,787         23,790           24,732          23,751
                                                 ==========    ===========    =============    ============
Basic earnings per common share                      $0.21          $0.08            $0.43           $0.26
                                                 ==========    ===========    =============    ============

Diluted Earnings Per Common Share
     Computation:
Weighted average common shares outstanding:
  Shares attributable to common stock               24,787         23,790           24,732          23,751
  Shares attributable to common stock
     options                                           290            862              352             899
                                                 ----------    -----------    -------------    ------------
                                                    25,077         24,652           25,084          24,650
                                                 ==========    ===========    =============    ============
Diluted earnings per common share                    $0.21          $0.08            $0.42           $0.25
                                                 ==========    ===========    =============    ============

</TABLE>
<PAGE>




Note 3 - Comprehensive Income

The Company adopted  Statement of Financial  Accounting  Standards  ("SFAS") No.
130, "Reporting  Comprehensive Income" at the beginning of fiscal 1999. SFAS No.
130 establishes new rules for the reporting and display of comprehensive  income
and its components.  The adoption of SFAS 130 had no impact on the Company's net
income or  stockholders'  equity.  SFAS No. 130 requires the  Company's  foreign
currency  translation  adjustments,   which  prior  to  adoption  were  reported
separately  in  shareholders'  equity,  to be  included  in other  comprehensive
income. Prior year financial statements have been reclassified to conform to the
requirements of this Statement.  Total comprehensive income, which was comprised
of net income and foreign currency translation adjustments, was $4.4 million and
$3.2  million  for  the  three   months  ended   December  31,  1998  and  1997,
respectively.  Total comprehensive  income for the six months ended December 31,
1998 and 1997 totaled $9.5 million and $7.8 million, respectively.

Note 4 - New Accounting Pronouncements

In June 1997,  the  Financial  Accounting  Standards  Board  issued SFAS No. 131
"Disclosures about Segments of an Enterprise and Related  Information." SFAS No.
131 requires  selected  information  to be reported on the  Company's  operating
segments. Operating segments are determined by the way management structures the
segments in making operating decisions and assessing performance. The Company is
currently  reviewing what changes, if any, this will require on the presentation
of the financial statements for fiscal year 1999. The adoption of this statement
will not have an  effect on the  Company's  financial  position  or  results  of
operations but may result in additional disclosures.

In June  1998,  the  FASB  issued  SFAS  No.  133,  "Accounting  for  Derivative
Instruments and Hedging  Activities." SFAS No. 133 establishes new standards for
the  recognition  of gains and losses on  derivative  instruments  and  provides
guidance  as  to  whether  a  derivative  may  be  accounted  for  as a  hedging
instrument. Gains or losses from hedging transactions may be wholly or partially
recorded in earnings or comprehensive income as part of a cumulative translation
adjustment.  Gains or losses on derivative instruments not classified as hedging
instruments  are  recognized  in earnings in the period of change.  SFAS No. 133
will be effective for the Company beginning in fiscal 2000. The Company does not
believe  that  adoption  of SFAS No.  133 will  have a  material  impact  on its
financial position or its results of operations.


<PAGE>


Item 2.

Management's  Discussion  and  Analysis of  Financial  Condition  and Results of
Operations

The  financial  information  discussed  below  is  derived  from  the  Condensed
Consolidated Financial Statements included herein. The financial information set
forth and  discussed  below is  unaudited  but,  in the  opinion of  management,
reflects all adjustments  (primarily consisting of normal recurring adjustments)
necessary for a fair presentation of such information.  The Company's results of
operations  for a particular  quarter may not be indicative of results  expected
during subsequent fiscal quarters or for the entire year.

The following discussion contains forward-looking  statements that involve risks
and uncertainties.  Such forward-looking statements include those related to the
adequacy of the Company's  existing capital resources and future cash flows from
operations,  the  Company's  Year 2000  readiness  and the  Company's  desire to
continue  to  expand  through  acquisitions.   The  forward-looking   statements
contained  in the  following  discussion  include,  but are not  limited to, any
statements   containing  the  words   "expects,"   "anticipates,"   "estimates,"
"believes," "may," "will," "should" and similar  expressions,  and the negatives
thereof.  The  Company's  actual  experience  may  differ  materially  from that
discussed  in the  forward-looking  statement.  Factors  that might cause such a
difference  include,  but are not limited to, the potential loss or cancellation
of, or delay of work  under,  one or more  large  contracts;  the  adequacy  and
effectiveness of the Company's sales force in winning new business;  the ability
to attract,  train and retain  qualified  employees;  the  Company's  ability to
manage  adequately its continued  expansion;  the Company's  ability to meet its
deadlines regarding Year 2000 readiness;  and future events that have the effect
of reducing the Company's  available cash balances such as unexpected  operating
losses,  capital  expenditures or cash  expenditures  related to possible future
acquisitions; and those discussed in Risk Factors.

Overview

The Company is a leading contract  research and medical  marketing  organization
providing  a broad  range of  knowledge-based  product  development  and product
launch  services  to the  worldwide  pharmaceutical,  biotechnology  and medical
device  industries.  The Company's  primary objective is to help clients quickly
obtain the necessary  regulatory  approvals of their  products and,  ultimately,
optimize  the  market  penetration  of those  products.  The  Company's  service
offerings include: clinical trials management,  data management,  biostatistical
analysis,  medical  marketing,  clinical  pharmacology,  regulatory  and medical
consulting, performance improvement, industry training and publishing, and other
drug development consulting services.

The Company's  contracts are typically  fixed price,  multi-year  contracts that
require  a portion  of the fee to be paid at the time the  contract  is  entered
into,  with the balance of the fee paid in  installments  during the  contract's
duration.  Net revenue from contracts is generally recognized on a percentage of
completion basis as work is performed.

Generally, the Company's contracts are terminable upon sixty days' notice by the
client.  Clients  terminate  or  delay  contracts  for  a  variety  of  reasons,
including,  among others, the failure of products being tested to satisfy safety
requirements,  unexpected  or undesired  clinical  results of the  product,  the
client's decision to forego a particular study,  insufficient patient enrollment
or investigator  recruitment,  or production  problems resulting in shortages of
the drug.

As is customary in the industry,  the Company routinely  subcontracts with third
party  investigators  in connection  with clinical  trials and other third party
service providers for laboratory analysis and other specialized services.  These
and other reimbursable costs, which vary from contract to contract,  are paid by
the client and, in  accordance  with  industry  practice,  are included in gross
revenue.  Reimbursed  costs vary from  contract to  contract.  Accordingly,  the
Company  views net revenue,  which  consists of gross  revenue  less  reimbursed
costs, as its primary measure of revenue growth.

Direct costs primarily  consist of compensation  and related fringe benefits for
project-related  employees,  other  project-related  costs  not  reimbursed  and
allocated  facilities  and  information  systems  costs.  Selling,  general  and
administrative  expenses  primarily  consist of compensation  and related fringe
benefits for selling and  administrative  employees,  professional  services and
advertising  costs,  as  well as  allocated  costs  related  to  facilities  and
information systems.

The  Company's  stock is  currently  quoted on the Nasdaq Stock Market under the
symbol "PRXL."

Results of Operations

Three Months Ended December 31, 1998 Compared to Three Months Ended December 31,
1997

Net revenue  increased by $19.9  million,  or 29.2%,  from $68.0 million for the
three months ended December 31, 1997 to $87.9 million for the three months ended
December 31, 1998.  This net revenue  growth was  primarily  attributable  to an
increase in the volume of  projects  serviced  by the  Company.  There can be no
assurance that the Company can sustain this rate of increase in net revenue from
continuing operations in future periods. See "Risk Factors."

Direct costs  increased by $14.6 million,  or 33.1%,  from $44.3 million for the
three months ended December 31, 1997 to $58.9 million for the three months ended
December 31, 1998. This increase in direct costs was primarily due to hiring and
personnel costs along with related  facilities and information  systems costs to
support  current and future  increased  levels of  operation.  Direct costs as a
percentage  of net  revenue  increased  from  65.1% for the three  months  ended
December  31,  1997 to 67.0% for the  three  months  ended  December  31,  1998,
reflecting an increase in overall operational capacity.

Selling,  general and  administrative  expenses  increased by $3.1  million,  or
22.2%,  from $14.1 million for the three months ended December 31, 1997 to $17.2
million  for the three  months  December  31,  1998.  This  increase  was due to
increased  personnel,   hiring  expenses,  and  facilities  costs  necessary  to
accommodate  the  Company's  growth.  As a percentage  of net revenue,  selling,
general and  administrative  expenses  decreased from 20.7% for the three months
ended December 31, 1997 to 19.6% for the three months ended December 31, 1998.

Depreciation  and  amortization  expense  increased by $1.3  million,  from $3.2
million for the three  months  ended  December  31, 1997 to $4.5 million for the
three months ended December 31, 1998. The increase is due to capital spending on
information  technology,  facility  improvements  and furnishings to support the
increased  level of  operations.  As a percentage  of net revenue,  depreciation
increased from 4.7% for the three months ended December 31, 1997 to 5.1% for the
three  months  ended  December  31,  1998,  reflecting  an  increase  in overall
operational capacity.

Income from  operations  increased $4.9 million,  or 205%, from $2.4 million for
the three  months  ended  December 31, 1997 to $7.3 million for the three months
ended  December 31, 1998.  During the three months ended  December 31, 1997, the
Company   incurred  a  $4.1  million  charge  related  to  the   acquisition  of
Kemper-Masterson,  Inc.  Excluding  the  impact  of  this  charge,  income  from
operations  increased  from $6.5  million,  or 9.6% of net revenue for the three
months ended December 31, 1997 to $7.3 million, or 8.3% of net revenue,  for the
three months ended December 31, 1998.

Other  income,  net  decreased  by $0.3  million from $0.9 million for the three
months  ended  December  31,  1997 to $0.6  million for the three  months  ended
December 31, 1998.  This decrease is due to lower average cash,  cash equivalent
and marketable  securities  balances during the second quarter of fiscal 1999 in
comparison to the second  quarter of fiscal 1998 due to capital  spending and to
fund working capital for an increased level of operations.

The Company had an income tax  provision  of $2.8  million for the three  months
ended  December 31,  1998.  The  effective  income tax rate for the three months
ended  December 31, 1998, was 35.0% compared to 41.6% for the three months ended
December 31, 1997. Prior to restatement for certain  acquisitions  accounted for
as pooling of  interests,  the  Company's  effective  tax rate was 35.0% for the
three months ended December 31, 1997. After restatement,  the effective tax rate
increased to 41.6% for the three months ended  December 31, 1997 due to unusable
net operating loss  carryforwards  and  non-deductible  expenses of the acquired
companies.

Results of Operations

Six Months Ended December 31, 1998 Compared to Six Months Ended December 31, 
1997

Net revenue  increased by $39.7 million,  or 30.3%,  from $131.0 million for the
six months ended  December  31, 1997 to $170.7  million for the six months ended
December 31, 1998.  This net revenue  growth was  primarily  attributable  to an
increase in the volume of  projects  serviced  by the  Company.  There can be no
assurance that the Company can sustain this rate of increase in net revenue from
continuing operations in future periods. See "Risk Factors."

Direct costs  increased by $27.1 million,  or 31.6%,  from $85.6 million for the
six months ended  December  31, 1997 to $112.6  million for the six months ended
December 31, 1998. This increase in direct costs was primarily due to hiring and
personnel costs along with related  facilities and information  systems costs to
support  current and future  increased  levels of  operation.  Direct costs as a
percentage of net revenue increased from 65.3% for the six months ended December
31, 1997 to 66.0% for the six months  ended  December 31,  1998,  reflecting  an
increase in overall operational capacity.

Selling,  general and  administrative  expenses  increased by $7.1  million,  or
25.9%,  from $27.3  million for the six months ended  December 31, 1997 to $34.4
million for the six months December 31, 1998. This increase was due to increased
personnel,  hiring  expenses,  and facilities costs necessary to accommodate the
Company's  growth.  As  a  percentage  of  net  revenue,  selling,  general  and
administrative  expenses  decreased from 20.8% for the six months ended December
31, 1997 to 20.1% for the six months ended December 31, 1998.

Depreciation  and  amortization  expense  increased by $2.9  million,  from $5.8
million for the six months  ended  December 31, 1997 to $8.7 million for the six
months  ended  December 31,  1998.  The increase was due to capital  spending on
information  technology,  facility  improvements  and furnishings to support the
increased  level of  operations.  As a percentage  of net revenue,  depreciation
increased  from 4.4% for the six months ended  December 31, 1997 to 5.1% for the
six  months  ended  December  31,  1998,   reflecting  an  increase  in  overall
operational capacity.

Income from operations  increased $6.7 million,  or 82.0%, from $8.2 million for
the six months ended December 31, 1997 to $15.0 million for the six months ended
December 31, 1998.  During the six months ended  December 31, 1997,  the Company
incurred a $4.1 million charge related to the  acquisition of  Kemper-Masterson,
Inc. Excluding the impact of this charge,  income from operations increased from
$12.3 million, or 9.4% of net revenue for the six months ended December 31, 1997
to $15.0 million, or 8.8% of net revenue,  for the six months ended December 31,
1998.

Other income, net decreased by $0.7 million from $2.0 million for the six months
ended  December 31, 1997 to $1.3  million for the six months ended  December 31,
1998.  This decrease  resulted from lower interest rates obtained due to a shift
to tax-exempt  securities in fiscal 1998,  along with lower average  balances of
cash,  cash  equivalents,  and  marketable  securities  due primarily to capital
spending and to fund working capital for an increased level of operations.

The Company had an income tax provision of $5.6 million for the six months ended
December  31,  1998.  The  effective  income tax rate for the six  months  ended
December 31, 1998, was 34.7% compared to 39.1% for the six months ended December
31, 1997. Prior to restatement for certain acquisitions accounted for as pooling
of  interests,  the  Company's  effective  tax rate was 35.0% for the six months
ended December 31, 1997. After restatement,  the effective tax rate increased to
39.1% for the six months ended  December 31, 1997 due to unusable net  operating
loss carryforwards and non-deductible expenses of the acquired companies.

Liquidity and Capital Resources

Since its  inception,  the  Company  has  financed  its  operations  and growth,
including  acquisition  costs,  with cash flows from operations and the proceeds
from the sale of  equity  securities.  Investing  activities  primarily  reflect
capital   expenditures  for  information  systems   enhancements  and  leasehold
improvements.

The Company's  clinical  research and development  contracts are generally fixed
price, with some variable components, and range in duration from a few months to
several years. The cash flows from contracts typically consist of a down payment
required  at  the  time  the  contract  is  entered  into  and  the  balance  in
installments over the contract's  duration,  usually on a milestone  achievement
basis.  Revenue from the  contracts is generally  recognized  on a percentage of
completion  basis  as work  is  performed.  Accordingly,  cash  receipts  do not
necessarily  correspond to costs  incurred and revenue  recognized on contracts.
The  Company's  operating  cash flow is  influenced  by changes in the levels of
billed and unbilled receivables and advance billings. These account balances and
the number of days revenue  outstanding in accounts  receivable,  net of advance
billings,  can vary based on  contractual  milestones and the timing and size of
cash receipts.  The number of days revenue  outstanding in accounts  receivable,
net of advance billings, improved to 56 days at December 31, 1998 compared to 65
days at  September  30, 1998 due to an increase in cash  collections  during the
quarter.

The Company had cash and cash  equivalents of $63.0 million at December 31, 1998
compared to $39.9  million at June 30,  1998.  Net cash  provided  by  operating
activities  of  $12.3  million  resulted  primarily  from net  income  excluding
depreciation and amortization expense of $19.4 million, a $14.3 million increase
in deferred  revenue and a $2.8  million  decrease in other  current  assets and
prepaid  expenses,  partially  offset by a $23.5  million  increase  in accounts
receivable.

Net cash provided by investing  activities of $10.9 million consisted  primarily
of net proceeds from sales of marketable securities of $19.6 million,  partially
offset  by  capital   expenditures   of  $8.8  million  related  to  information
technology, facility improvements and furnishings.

Financing  activities  consisted  primarily of net proceeds from the issuance of
common  stock of $2.3  million,  partially  offset  by the  repayment  of credit
arrangements of $1.2 million.

The Company has  domestic  and foreign  line of credit  arrangements  with banks
totaling  approximately  $15.3  million.  At December 31, 1998,  the Company had
approximately $15.1 million in available credit under these arrangements.

The  Company's  primary  cash needs are for the payment of  salaries  and fringe
benefits,   hiring  and  recruiting   expenses,   business   development  costs,
acquisition-related  costs, capital expenditures and facility-related  expenses.
The Company  believes that its existing  capital  resources,  together with cash
flows from operations and borrowing capacity under its existing lines of credit,
will be  sufficient  to meet its  foreseeable  cash needs.  In the  future,  the
Company will  continue to consider  acquiring  businesses to enhance its service
offerings,  therapeutic  base, and global  presence.  Any such  acquisitions may
require additional external financing and the Company may from time to time seek
to obtain  funds from public or private  issuance of equity or debt  securities.
There  can be no  assurance  that  such  financing  will be  available  on terms
acceptable to the Company.

Year 2000  Readiness Disclosure Statement

Information  systems are an integral part of the services the Company  provides.
As such,  the  Company  recognizes  that it must  ensure  that its  service  and
operations  will not be adversely  affected by Year 2000  software and equipment
failures (the "Year 2000 Issue") which can arise from the use of  date-dependent
systems  that  utilize only two digits to  represent  the year  applicable  to a
transaction;  for example,  "99" to represent  "1999"  rather than the full four
digits. Computer systems engineered in this manner may not operate properly when
the last two digits of the year become "00", as will occur on January 1, 2000.

The Company has  initiated a four-phase  program,  led by its Chief  Information
Officer and a global,  cross-functional team, to assess and remediate the effect
of the Year 2000 Issue on the Company's operations. As part of this program, the
Company is contacting  its clients,  principal  suppliers,  and other vendors to
assess  whether their Year 2000 Issues,  if any,  will affect the Company.  This
effort is ongoing,  with responses already received from more than half of these
entities.

This  Company-wide  effort began in 1997, and to date,  several Year 2000 issues
have  already  been  identified  and  addressed   through  planned  systems  and
infrastructure evolution,  replacement,  or elimination.  The continuing program
described  below is to ensure  that the Company  identifies  and  addresses  all
remaining Year 2000 issues in advance of the year 2000.

The first phase of the program,  conducting an inventory of all systems that may
be affected  by the Year 2000  Issue,  is  complete  for all  critical  business
functions. The second phase of the program, the assessment and categorization of
all the  inventoried  systems by level of priority,  reflecting  their potential
impact on business continuation,  is substantially complete for all key business
areas  and  is  expected  to  be  completed   by  March  1999.   Based  on  this
prioritization,  the third phase is to develop  detailed  plans to address  each
Year 2000 Issue and to develop a general  contingency plan in the event that any
critical systems cannot be made fully compliant by January 1, 2000.  Contingency
plans will vary by  function  and will  identify  the work  procedure  change or
sourcing  alternative to be utilized in the event that the primary system fails.
This third phase is currently in process,  with detailed plans already completed
for most  critical  business  functions.  The fourth phase of the program is the
implementation  of the detailed  plans.  This phase is also in various states of
completion  within the numerous  functional  areas.  It is anticipated  that all
functions  essential for business continuity will be fully compliant by June 30,
1999.

The Company  estimates  that the aggregate cost of its Year 2000 program will be
approximately $3 million,  of which approximately 20% has already been incurred.
The Company's  estimates regarding the cost, timing and impact of addressing the
Year 2000 Issue are based on numerous  assumptions of future  events,  including
the continued  availability of certain resources,  the ability of the Company to
meet its deadlines and the cooperation of third parties. However, if the Company
cannot continue to utilize certain resources or rely on third parties to respond
timely, or the Company fails to meet its deadlines,  actual results could differ
materially from those expected by the Company.

Euro Conversion

On January 1, 1999,  certain member countries of the European Union  established
fixed  conversion  rates  between  their  existing  currencies  and the European
Union's common currency ("Euro").  The transition period for the introduction of
the Euro is from January 1, 1999 to January 1, 2002. The Company has established
a Euro  Initiative  Project Team to  determine  how this will affect the Company
with its business processes,  applications, and internal and external contracts.
The project team has begun the process of determining  the many issues  involved
with the  introduction  of the Euro,  including the  conversion  of  information
technology  systems,  recalculating  currency risk, and impacts on the processes
for preparing taxation and accounting records.

While the Company has not yet completed its full  assessment of the scope of the
Euro Conversion Issue facing its systems and dependencies, based on its analysis
to date it does not  believe  that the costs to be  incurred  will be  material.
However,  until  the full  analysis  is  complete,  the  Company  is  unable  to
definitively determine whether or not future costs will be material.





<PAGE>


RISK FACTORS

In addition to the other information in this report,  the following risk factors
should be  considered  carefully  in  evaluating  the Company and its  business,
including  the  forward-looking  statements  made in the  section of this report
entitled Management's Discussion and Analysis of Financial Condition and Results
of Operations  and other  forward-looking  statements  that the Company may make
from time to time.

Loss or Delay of Large Contracts
Generally, the Company's contracts are terminable upon sixty days' notice by the
client.  Clients  terminate  or  delay  contracts  for  a  variety  of  reasons,
including,  among others, the failure of products being tested to satisfy safety
requirements,  unexpected  or undesired  clinical  results of the  product,  the
client's  decision to forego a particular  study,  such as for economic reasons,
insufficient  patient  enrollment  or  investigator  recruitment  or  production
problems  resulting in shortages of the drug. In addition,  the Company believes
that  cost-containment  and  competitive  pressures  have caused  pharmaceutical
companies  to apply more  stringent  criteria to the  decision  to proceed  with
clinical  trials,  and  therefore,  may result in higher  cancellation  rates on
contracts  with contract  research  organizations.  The loss or delay of a large
contract  or the loss or delay  of  multiple  contracts  could  have a  material
adverse effect on the financial performance of the Company.

Variability of Quarterly Operating Results
The Company's  quarterly  operating results have been subject to variation,  and
will  continue to be subject to  variation,  depending  upon factors such as the
level of new business authorizations, the timing of the initiation, progress, or
cancellation of significant  projects,  exchange rate  fluctuations,  the mix of
services offered, the opening of new offices and other internal expansion costs,
the  costs  associated  with  integrating  acquisitions  and the  startup  costs
incurred in  connection  with the  introduction  of new products  and  services.
Because a high percentage of the Company's operating costs are relatively fixed,
variations in the initiation,  completion, delay or loss of contracts, or in the
progress of client projects can cause material  adverse  variations in quarterly
operating results.

Dependence on Certain Industries and Clients
The  Company's  revenues  are  highly  dependent  on  research  and  development
expenditures by the pharmaceutical and biotechnology  industries.  The Company's
operations  could be  materially  and  adversely  affected  by general  economic
downturns in its  clients'  industries,  the impact of the current  trend toward
consolidation  in these  industries or any decrease in research and  development
expenditures. Furthermore, the Company has benefited to date from the increasing
tendency of  pharmaceutical  companies  to  outsource  large  clinical  research
projects.  A reversal  or slowing  of this trend  would have a material  adverse
effect on the Company.  In fiscal 1998, the Company's top five clients accounted
for 34% of the Company's  consolidated  net revenue.  For the three months ended
December 31, 1998,  the  Company's  top five  clients  accounted  for 47% of the
Company's  consolidated  net revenue,  and for the six months ended December 31,
1998, the top five clients  accounted for 44% of  consolidated  net revenue.  In
fiscal 1998, one client accounted for 12% of consolidated  net revenue,  and for
the three months ended December 31, 1998 a different client accounted for 20% of
consolidated net revenue. For the six months ended December 31, 1998, one client
accounted  for 19% of  consolidated  net  revenue.  The loss of business  from a
significant client could have a material adverse effect on the Company.

Management of Business Expansion
The Company's  business and operations have  experienced  substantial  expansion
particularly  over the past few years.  The Company believes that such expansion
places a strain on  operational,  human  and  financial  resources.  In order to
manage such  expansion,  the  Company  must  continue to improve its  operating,
administrative and information systems,  accurately predict its future personnel
and resource needs to meet client  contract  commitments,  track the progress of
ongoing  client  projects and attract and retain  qualified  management,  sales,
professional, scientific and technical operating personnel. Expansion of foreign
operations also may involve the additional risks of assimilating  differences in
foreign  business  practices,  hiring and  retaining  qualified  personnel,  and
overcoming  language  barriers.  In the event that the  operation of an acquired
business does not meet expectations,  the Company may be required to restructure
the acquired business or write-off the value of some or all of the assets of the
acquired  business.  Failure by the Company to meet the demands of and to manage
expansion of its business and operations could have a material adverse effect on
the Company's business.

Risks Associated with Acquisitions
The Company has made a number of acquisitions and will continue to review future
acquisition  opportunities.  Acquisition  candidates  may  not  continue  to  be
available  on terms  and  conditions  acceptable  to the  Company.  Acquisitions
involve numerous risks, including, among other things, difficulties and expenses
incurred in connection with the acquisitions and the subsequent  assimilation of
the operations and services or products of the acquired companies, the diversion
of management's attention from other business concerns and the potential loss of
key employees of the acquired  company.  Acquisitions of foreign  companies also
may involve the additional risks of assimilating differences in foreign business
practices and overcoming language barriers.  In the event that the operations of
an acquired  business do not meet  expectations,  the Company may be required to
restructure  the acquired  business or write-off the value of some or all of the
assets  of  the  acquired  business.   The  Company  may  experience  difficulty
integrating acquired companies into the Company's operations.

Dependence  on  Personnel;  Ability to Attract and Retain  Personnel 
The  Company  relies  on a  number  of key  executives,  including  Josef H. von
Rickenbach,  its President,  Chief Executive Officer and Chairman, upon whom the
Company maintains key man life insurance.  Although the Company has entered into
agreements containing non-competition restrictions with its senior officers, the
Company does not have  employment  agreements  with certain of these persons and
the loss of the services of any of the  Company's  key  executives  could have a
material  adverse  effect  on the  Company.  In  addition,  in order to  compete
effectively,   the  Company   must  attract  and   maintain   qualified   sales,
professional,  scientific  and  technical  operating  personnel.  The  level  of
competition among employers for skilled personnel, particularly those with M.D.,
Ph.D. or equivalent degrees, is high. The Company may not be able to continue to
attract and retain qualified staff.

Potential  Liability;  Possible  Insufficiency  of Insurance  
Clinical research services  primarily involve the testing of experimental  drugs
on  consenting  human  volunteers  pursuant to a study  protocol.  Such services
involve  a risk of  liability  for  personal  injury  or death to  patients  who
participate  in the study or who use a drug approved by  regulatory  authorities
after the clinical research has concluded, due to, among other reasons, possible
unforeseen  adverse side effects or improper  administration  of the new drug by
physicians.  In certain cases,  these patients are already seriously ill and are
at risk of  further  illness  or death.  The  Company  could be  materially  and
adversely  affected if it were required to pay damages or incur defense costs in
connection  with a claim that is outside the scope of an  indemnity or insurance
coverage,  or if  the  indemnity,  although  applicable,  is  not  performed  in
accordance  with its terms or if the Company's  liability  exceeds the amount of
applicable  insurance.  In  addition,  such  insurance  may not  continue  to be
available on terms acceptable to the Company.

Potential Volatility of Stock Price
The  market  price  of the  Company's  common  stock  could be  subject  to wide
fluctuations in response to quarter-to-quarter  variations in operating results,
changes in earnings  estimates by analysts,  market  conditions in the industry,
prospects of health care reform,  changes in government  regulation  and general
economic  conditions.  In  addition,  the  stock  market  has from  time to time
experienced  significant price and volume  fluctuations that have been unrelated
to the operating performance of particular companies.  These market fluctuations
may adversely affect the market price of the Company's common stock. Because the
Company's  common stock  currently  trades at a relatively  high  price-earnings
multiple,  due in part to analysts'  expectations of continued  earnings growth,
even a relatively  small  shortfall in earnings from, or a change in,  analysts'
expectations  may cause an immediate  and  substantial  decline in the Company's
stock price. Investors in the Company's common stock must be willing to bear the
risk of such fluctuations in earnings and stock price.

Dependence on Government Regulation
The Company's business depends on the comprehensive government regulation of the
drug development  process.  In the United States,  the general trend has been in
the  direction of continued or increased  regulation,  although the FDA recently
announced  regulatory  changes  intended to streamline the approval  process for
biotechnology  products  by  applying  the same  standards  as are in effect for
conventional drugs. In Europe, the general trend has been toward coordination of
common  standards for clinical  testing of new drugs,  leading to changes in the
various  requirements  currently imposed by each country.  Japan also legislated
GCP and legitimatized the use of contract research  organizations in April 1997.
Changes in regulation,  including a relaxation in regulatory requirements or the
introduction  of simplified  drug approval  procedures,  as well as  anticipated
regulation,  could  materially and adversely  affect the demand for the services
offered by the  Company.  In  addition,  failure  on the part of the  Company to
comply with  applicable  regulations  could result in the termination of ongoing
research or the  disqualification of data, either of which could have a material
adverse effect on the Company.

Competition
The Company  primarily  competes against in-house  departments of pharmaceutical
companies,  full service CROs,  and to a lesser extent,  universities,  teaching
hospitals and other site  organizations.  Some of these competitors have greater
capital,  technical and other resources than the Company. CROs generally compete
on the  basis of  previous  experience,  medical  and  scientific  expertise  in
specific therapeutic areas, the quality of services, the ability to organize and
manage  large-scale  trials on a global  basis,  the ability to manage large and
complex  medical  databases,  the ability to provide  statistical and regulatory
services,  the ability to recruit  investigators  and  patients,  the ability to
integrate  information  technology  with  systems to improve the  efficiency  of
contract  research,   an  international   presence  with  strategically  located
facilities, financial viability and price.

The CRO industry is fragmented,  with participants  ranging from several hundred
small, limited-service providers to several large, full-service CROs with global
operations.   Large  CROs  against  whom  PAREXEL  competes  include   Quintiles
Transnational Corporation, Covance Inc., and Pharmaceutical Product Development,
Inc.  The trend  toward CRO industry  consolidation  has resulted in  heightened
competition  among the larger CROs for clients and  acquisition  candidates.  In
addition,   consolidation  within  the  pharmaceutical   industry,  as  well  as
pharmaceutical  companies  outsourcing to a fewer number of preferred  CROs, has
led to heightened competition for CRO contracts.



Potential Adverse Impact of Health Care Reform
Numerous  governments  have  undertaken  efforts to control  growing health care
costs through legislation, regulation and voluntary agreements with medical care
providers  and  pharmaceutical   companies.  In  the  last  few  years,  several
comprehensive health care reform proposals were introduced in the U.S. Congress.
The intent of the proposals was,  generally,  to expand health care coverage for
the  uninsured  and reduce the growth of total health care  expenditures.  While
none of the proposals were adopted, health care reform may again be addressed by
the U.S. Congress. Implementation of government health care reform may adversely
affect research and development expenditures by pharmaceutical and biotechnology
companies,  resulting in a decrease of the business  opportunities  available to
the  Company.  Management  is unable to predict  the  likelihood  of health care
reform proposals being enacted into law or the effect such law would have on the
Company.

Many governments  outside the U.S. have also reviewed or undertaken  health care
reform.  The Company cannot predict the impact that any pending or future health
care reform proposals may have on the Company's business in other countries.

Adverse Effect of Exchange Rate Fluctuations
Approximately  41% of the  Company's  net revenue for fiscal  1998,  42% for the
three months ended  December 31, 1998, and 43% for the six months ended December
31, 1998,  was derived from the Company's  operations  outside of North America.
Since the revenue and expenses of the Company's foreign operations are generally
denominated  in local  currencies,  exchange  rate  fluctuations  between  local
currencies  and the United  States  dollar will  subject the Company to currency
translation risk with respect to the results of its foreign  operations.  To the
extent the  Company is unable to shift to its  clients  the  effects of currency
fluctuations,  these  fluctuations  could have a material  adverse effect on the
Company's  results of operations.  The Company does not currently  hedge against
the risk of exchange rate fluctuations.

Anti-Takeover  Provisions;  Possible  Issuance of Preferred  Stock 
The  Company's  Restated  Articles of  Organization,  as amended,  and  Restated
By-Laws contain  provisions that may make it more difficult for a third party to
acquire,  or may  discourage a third party from  acquiring,  the Company.  These
provisions could limit the price that certain  investors might be willing to pay
in the future for shares of the Company's  common stock. In addition,  shares of
the  Company's  preferred  stock  may be issued in the  future  without  further
stockholder approval and upon such terms and conditions, and having such rights,
privileges and preferences,  as the Board of Directors may determine. The rights
of the holders of common stock will be subject to, and may be adversely affected
by,  the  rights of any  holders  of  preferred  stock that may be issued in the
future. The issuance of preferred stock, while providing  desirable  flexibility
in connection with possible  acquisitions  and other corporate  purposes,  could
adversely  affect the market price of the common stock and could have the effect
of making it more  difficult  for a third party to acquire,  or  discouraging  a
third party from acquiring,  a majority of the  outstanding  voting stock of the
Company.  The  Company  has no present  plans to issue any  shares of  preferred
stock.

<PAGE>


Part II.  Other Information

Item 1.    Legal Proceedings

            The  Company  has been  named as one of many  defendants  in several
            product  liability  actions pending in two state courts.  The claims
            relate to drugs  approved for use by the Food & Drug  Administration
            and for which the Company provided clinical research services. These
            actions  were  brought  by  individual  plaintiffs  and not as class
            actions.  The Company has  provided  notice of these  matters to its
            insurance  carrier  and has  submitted  requests  to its clients for
            indemnification under the terms of its indemnification  arrangements
            with those companies.

Item 4.    Submission of Matters to a Vote of Security Holders

           (a) On November 12, 1998, the Company held its 1998 Annual Meeting of
               Stockholders.
           
           (b) Not applicable.

           (c) At the meeting, the stockholders of the Company voted:

               (1) to  elect  the  following  persons  to  serve  as  Class  III
                   directors,  to serve for a three-year  term (until the Annual
                   Meeting  of  Stockholders  in 2001).  The votes  cast were as
                   follows:
                                                         For          Withheld

                   Josef H. von Rickenbach            20,070,138       193,125

                   A. Dana Callow, Jr.                20,069,812       193,451

               (2) to ratify  the  selection  of  PricewaterhouseCoopers  LLP as
                   independent  auditors  for the fiscal  year  ending  June 30,
                   1999. The votes cast were as follows:

                    For                    Against                    Abstain

                    20,248,251              5,811                       9,201

           (d) Not applicable.

Item 6.    Exhibits and Reports on Form 8-K

           (a)   Exhibit No.       Description

                   10.1            Third Amendment to Lease dated 11/17/98 
                                   between Boston Properties Limited Partnership
                                   and the Company.

                   10.2            Lease dated 11/17/98 between Boston 
                                   Properties Limited Partnership and the 
                                   Company.

                   27              Financial Data Schedule

           (b) Reports on Form 8-K:

                The Company filed a Current Report on Form 8-K dated January 27,
                1999  reporting  financial  results for the three  months  ended
                December 31, 1998.

                                   SIGNATURES


Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized, on this 9th day of February, 1999.


 PAREXEL International Corporation


 By:/s/   Josef H. von Rickenbach__________

       Josef H. von Rickenbach
       President, Chief Executive Officer and Chairman




 By:/s/   William T. Sobo, Jr. ______________

      William T. Sobo, Jr.
      Senior Vice President, Chief Financial Officer



<PAGE>



                                  EXHIBIT INDEX


Exhibit No.  Description

10.1         Third Amendment to Lease dated 11/17/98 between Boston Properties
             Limited Partnership and the Company.

10.2         Lease dated 11/17/98 between Boston Properties Limited Partnership 
             and the Company

27           Financial Data Schedule


<PAGE>


EXHIBIT 10.1  THIRD AMENDMENT TO LEASE 


         THIRD AMENDMENT TO LEASE dated as of this 17th day of November, 1998 by
and  between  BOSTON  PROPERTIES   LIMITED   PARTNERSHIP,   a  Delaware  limited
partnership  ("Landlord") (as  successor-in-interest  to 200 West Street Limited
Partnership) and PAREXEL INTERNATIONAL  CORPORATION, a Massachusetts corporation
("Tenant").

                            R E C I T A L S

         WHEREAS, by lease dated June 14, 1991 (the "Original Lease"),  Landlord
did lease to Tenant and Tenant did hire and lease from Landlord certain premises
in the building  known as and numbered 195 West Street,  Waltham,  Massachusetts
(the "Building") containing a total of 48,258 square feet of rentable floor area
(hereinafter sometimes referred to as the "Initial Premises").

         WHEREAS,  by First Amendment to Lease dated January 3, 1992 (the "First
Amendment"),  Tenant  exercised  its right  pursuant  to Section  2.1.1.1 of the
Original  Lease to lease from  Landlord  an  additional  15,242  square  feet of
rentable floor area in the Building (the  "Additional  Premises") upon the terms
and conditions  contained in the First  Amendment.  The Initial Premises and the
Additional Premises are hereinafter  sometimes  collectively  referred to as the
"Premises".

         WHEREAS,  by Second Amendment to Lease dated June 28, 1993 (the "Second
Amendment"),  Tenant leased from  Landlord an additional  660 square feet in the
basement of the  Building  (the  "Tenant's  Storage  Space")  upon the terms and
conditions  contained  in  the  Second  Amendment.  The  Original  Lease,  First
Amendment and Second Amendment are hereinafter  collectively  referred to as the
"Lease."

         WHEREAS,  the term of the Lease (the "Term") is currently  scheduled to
expire on August 31,  2001,  at which point  Tenant has the option to extend the
Term for two (2) consecutive periods of five (5) years each, as set forth in the
Lease.

         WHEREAS, by lease to be executed and delivered  simultaneously herewith
(the "200 West Street  Lease"),  Landlord shall lease to Tenant and Tenant shall
hire and lease from Landlord certain  premises (the "200 West Street  Premises")
located in a building to be  constructed  by Landlord  and known as and numbered
200 West Street, Waltham, Massachusetts.

         Landlord and Tenant are entering into this instrument to provide Tenant
with  the  option  to make  the  Term of the  Lease  coterminous  with  the date
established  as the expiration  date of the 200 West Street Lease,  and to amend
the Lease accordingly.

         NOW,  THEREFORE,  in consideration of One Dollar ($1.00) and other good
and valuable  consideration in hand this date paid by each of the parties to the
other, the receipt and sufficiency of which are hereby  severally  acknowledged,
and in further  consideration of the mutual promises herein contained,  Landlord
and Tenant hereby agree to and with each other as follows:

         1. (A) Notwithstanding anything contained in Section 2.4.1 of the Lease
         to  the  contrary  and  provided  that  at the  time  of  exercise  and
         commencement of the extension  option period  described below (i) there
         exists no Event of Default  (as  defined in Section  7.1 of the Lease),
         (ii) the Lease is still in full force and  effect and (iii)  Tenant has
         not assigned the Lease or sublet more than forty  percent  (40%) of the
         Rentable Floor Area of the Premises in the aggregate (not including any
         assignment  or subleasing  under  Section  5.6.1 of the Lease),  Tenant
         shall  have the right to extend the Term of the Lease upon all the same
         terms,  conditions,  covenants  and  agreements  contained in the Lease
         (except  for Annual  Fixed Rent,  which  shall be  adjusted  during the
         option period as hereinbelow set forth) for one (1) period of seven (7)
         years and eight (8) months (or such other time  period as will make the
         expiration  of  the  Term  of  the  Lease  coterminous  with  the  date
         established  as the  expiration  date of the 200 West Street Lease,  it
         being  understood  that the  commencement  date for the 200 West Street
         Lease  has  yet  to  be  determined  and  accordingly   that  the  date
         established  as the  expiration  date of the 200 West Street  Lease has
         also yet to be determined) as hereinafter set forth.  The option period
         is sometimes herein referred to as the "Interim Extended Term".

         (B) (i) If Tenant  desires to  exercise  the option to extend the Term,
         then Tenant  shall give notice to  Landlord,  not earlier  than fifteen
         (15) months nor later than twelve (12) months  prior to the  expiration
         of the Term of the Lease, of Tenant's request for Landlord's  quotation
         to Tenant of a  proposed  annual  fixed rent for the  Interim  Extended
         Term,  which  shall not be less than $21.00 per square foot of Rentable
         Floor Area of the  Premises  and shall be  expressed in relation to the
         tax and  operating  cost  bases and  provisions  for  payment of tenant
         electricity  as contained in the Lease.  If at the expiration of thirty
         (30) days  after  the date  when  Landlord  receives  Tenant's  written
         request as aforesaid (the  "Negotiation  Period"),  Landlord and Tenant
         have not reached  agreement on a determination  of an annual rental for
         the Interim Extended Term and executed a written  instrument  extending
         the Term of this Lease  pursuant to such  agreement,  then Tenant shall
         have the right,  for fifteen (15) days  following the expiration of the
         Negotiation  Period,  to  make  a  request  to  Landlord  for a  broker
         determination  (the "Broker  Determination")  of the Prevailing  Market
         Rent (as  defined in Exhibit G to the  Original  Lease) for the Interim
         Extended Term, which Broker  Determination  shall be made in the manner
         set forth in the aforesaid Exhibit G.

         (B)  (ii)  If  Tenant   timely   shall   have   requested   the  Broker
         Determination,  then in order to exercise  its right to extend the Term
         of the Lease for the Interim Extended Term, Tenant, within fifteen (15)
         days  after  receipt of the Broker  Determination,  shall give  written
         notice to  Landlord  of  Tenant's  exercise  of its right to extend the
         Lease Term for the  Interim  Extended  Term  pursuant  to this  Section
         1(B)(ii),  in which case the Annual Fixed Rent for the Interim Extended
         Term  shall  be the  greater  of (a)  the  Prevailing  Market  Rent  as
         determined by the Broker Determination or (b) $21.00 per square foot of
         Rentable  Floor Area of the Premises and shall be expressed in relation
         to the tax and  operating  cost  bases and  provisions  for  payment of
         tenant electricity as contained in the Lease. Upon the giving of notice
         by Tenant  within  said  fifteen  (15) day period as  provided  in this
         subsection  (B)(ii)  then this  Lease and Lease  Term  hereof  shall be
         extended to the date established as the expiration date of the 200 West
         Street  Lease upon all of the same  terms,  conditions,  covenants  and
         agreements  contained  in this Lease  except that the Annual Fixed Rent
         for the Interim Extended Term shall be the rent determined as described
         in this subparagraph.

         (C) Upon the giving of notice by Tenant to Landlord exercising Tenant's
         option to extend the Lease Term in  accordance  with the  provisions of
         either  subsection  B(i) or B(ii)  above,  then the Lease and the Lease
         Term hereof shall be extended,  for the Interim Extended Term,  without
         the  necessity for the execution of any  additional  documents,  except
         that  Landlord and Tenant agree to enter into an  instrument in writing
         setting  forth the Annual Fixed Rent for the Interim  Extended  Term as
         determined  in the relevant  manner set forth in this Section 1; and in
         such event all  references  herein to the Lease Term or the term of the
         Lease  shall  be  construed  as  referring  to the  Lease  Term,  as so
         extended, unless the context clearly otherwise requires.

         (D) Notwithstanding anything contained in the Lease to the contrary, it
         is understood  and agreed that (i) upon the  expiration of the Original
         Term of the Lease, Tenants only extension option shall be the extension
         option  described in this Section 1, (ii) if Tenant shall  exercise the
         extension option  described in this Section 1, the extension  option(s)
         described  in  Section  2.4.1  of  the  Lease  shall  be   subsequently
         exercisable  by Tenant at the times and in the manner set forth in said
         Section 2.4.1,  as if the expiration of the Interim  Extended Term were
         the  expiration  of the Original  Term of the Lease and (iii) if Tenant
         shall not exercise the  extension  option  described in this Section 1,
         the extension options described in Section 2.4.1 shall be null and void
         and of no further force and effect.

         2. (A) Tenant  warrants and  represents  that Tenant has not dealt with
         any broker in connection with the  consummation of this Third Amendment
         other than Meredith & Grew Incorporated (the "Recognized Broker");  and
         in the event any claim is made against Landlord relative to dealings by
         Tenant with  brokers  other than the  Recognized  Broker,  Tenant shall
         defend the claim against  Landlord  with counsel of Tenant's  selection
         first  approved by Landlord  (which  approval will not be  unreasonably
         withheld) and save harmless and indemnify  Landlord on account of loss,
         cost or damage which may arise by reason of such claim.

                  (B) Landlord  warrants and  represents  that  Landlord has not
         dealt with any broker in connection with the consummation of this Third
         Amendment other than the Recognized  Broker; and in the event any claim
         is made against  Tenant  relative to dealings by Landlord  with brokers
         other  than the  Recognized  Broker,  Landlord  shall  defend the claim
         against Tenant with counsel of Landlord's  selection  first approved by
         Tenant  (which  approval  will not be  unreasonably  withheld) and save
         harmless and indemnify  Tenant on account of loss, cost or damage which
         may arise by reason of such  claim.  Landlord  agrees  that it shall be
         solely  responsible  for the payment of  brokerage  commissions  to the
         Recognized Broker.

         3. Except as otherwise expressly provided herein, all capitalized terms
         used herein without  definition shall have the same meanings as are set
         forth in the Lease.

         4. Except as herein  amended the Lease shall  remain  unchanged  and in
         full force and effect. All references to the "Lease" shall be deemed to
         be  references  to the Lease as  amended  by the First  Amendment,  the
         Second Amendment and as herein amended.



<PAGE>


         EXECUTED  as a sealed  instrument  as of the date and year first  above
written.

WITNESS:                                   LANDLORD:

                                           BOSTON PROPERTIES LIMITED PARTNERSHIP

                                           By: Boston Properties, Inc., its
                                               General Partner

                                           By_/s/James C. Rosenfeld________
                                           Name__James C. Rosenfeld________
                                           Title_Senior Vice President_____


ATTEST:                                    TENANT:

                                           PAREXEL INTERNATIONAL CORPORATION

By                                                          
Name                                                       
Title   SECRETARY                                                              
(OR ASSISTANT SECRETARY)                   By_/s/Josef von Rickenbach_____      
                                           Name__Josef von Rickenbach_____
                                           Title_CEO and Chairman_________
                                           HEREUNTO DULY AUTHORIZED
                                           

                                           By_/s/William T. Sobo, Jr.________
                                           Name__William T. Sobo, Jr.________
                                           Title     TREASURER                 
                                           HEREUNTO DULY AUTHORIZED

<PAGE>
EXHIBIT 10.2


                                   200 WEST STREET
                                WALTHAM, MASSACHUSETTS

                             LEASE DATED November 17, 1998



         THIS  INSTRUMENT IS AN INDENTURE OF LEASE in which the Landlord and the
Tenant  are the  parties  hereinafter  named,  and which  relates  to space in a
certain  building  (the  "Building")  known as, and with an address at, 200 West
Street, Waltham, Massachusetts.
         The parties to this  Indenture of Lease hereby agree with each other as
follows:

                                                      ARTICLE I

                                                   REFERENCE DATA

1.1      Subjects Referred To:

         Each reference in this Lease to any of the following  subjects shall be
         construed  to  incorporate  the data  stated  for that  subject in this
         Article:

         LANDLORD:                       Boston Properties Limited Partnership,
                                         a Delaware limited partnership

         LANDLORD'S ORIGINAL             c/o Boston Properties, Inc.
         ADDRESS:                        8 Arlington Street
                                         Boston, Massachusetts 02116

         LANDLORD'S CONSTRUCTION         James C. Rosenfeld
         REPRESENTATIVE:

         TENANT:                         PAREXEL International Corporation, 
                                         a Massachusetts corporation.

         TENANT'S ORIGINAL               195 West Street
         ADDRESS:                        Waltham, Massachusetts 02154

         TENANT'S CONSTRUCTION           Jeanette Indorato
         REPRESENTATIVE:

         TENANT PLAN INFORMATION
         DATE:                           September 1, 1998

         TENANT PLAN DELIVERY
         DATE:                           October 23, 1998

         TENANT PLAN APPROVAL
         DATE:                           December 1, 1998

         SPECIAL ALLOWANCE:              As defined in Section 3.1.1.

         INITIAL PHASE I SCHEDULED
         COMPLETION DATE:                May 1, 1999

         FOURTH FLOOR SCHEDULED
         COMPLETION DATE:                July 1, 1999

         PHASE I OUTSIDE
         COMPLETION DATE:                December 1, 1999

         COMMENCEMENT DATE:              As defined in Sections 2.4 and 3.2 
                                         hereof for that portion of the Premises
                                         that Tenant is leasing at any time 
                                         pursuant to the provisions of this 
                                         Lease.

         PREMISES A SCHEDULED
         COMMENCEMENT DATE:              May 1, 1999

         PREMISES B SCHEDULED
         COMMENCEMENT DATE:              July 1, 1999

         PREMISES C SCHEDULED
         COMMENCEMENT DATE:              October 1, 1999

         PREMISES D SCHEDULED
         COMMENCEMENT DATE:              May 1, 2000

TERM (SOMETIMES  CALLED One hundred  twenty  (120)  months THE  ORIGINAL  TERM):
     commencing  on the first of the  Commencement  Dates to occur  pursuant  to
     Sections 2.4 and 3.2 hereof (the Measuring Date) plus the partial month, if
     any, in which the  Measuring  Date  occurs,  unless  sooner  terminated  or
     extended in accordance with the terms and provisions of this Lease.

PREMISES A TERM:  That period of time  commencing on the  Commencement  Date for
     Premises A and expiring, unless sooner terminated or extended in accordance
     with the terms and  provisions  of this Lease,  upon the  expiration of the
     Term.

PREMISES B TERM:  That period of time  commencing on the  Commencement  Date for
     Premises B and expiring, unless sooner terminated or extended in accordance
     with the terms and  provisions  of this Lease,  upon the  expiration of the
     Term.

PREMISES C TERM:  That period of time  commencing on the  Commencement  Date for
     Premises C and expiring, unless sooner terminated or extended in accordance
     with the terms and  provisions  of this Lease,  upon the  expiration of the
     Term.

PREMISES D TERM:  That period of time  commencing on the  Commencement  Date for
     Premises D and expiring, unless sooner terminated or extended in accordance
     with the terms and  provisions  of this Lease,  upon the  expiration of the
     Term.

EXTENSION OPTIONS:  Two (2) periods of five (5) years each as provided in and on
     the terms set forth in Section 2.4.1 hereof.

THE  SITE:  That  certain  parcel of land known as and numbered 200 West Street,
     Waltham, Middlesex County, Massachusetts, being more particularly described
     in Exhibit A attached hereto.

THE  BUILDING:  The Building  known as and  numbered  200 West Street,  Waltham,
     Massachusetts;  it being  understood  and agreed that the Building is to be
     constructed in two phases of 129,199  rentable  square feet (Phase I of the
     Building)  and 119,142  rentable  square  feet (Phase II of the  Building),
     respectively,  and that the term  Building as used  herein  shall mean that
     Phase of the Building for which a base  building  certificate  of occupancy
     has been  issued by the City of Waltham at any given  time.  Phase I of the
     Building and Phase II of the Building are appropriately  labeled on Exhibit
     A-1 and Exhibit E attached hereto and hereby made a part hereof.

THE  COMPLEX:  The Building  together with all parking  areas,  the Site and all
     improvements (including landscaping) thereon and thereto.

TENANT'S SPACE That  portion of the  Building  that  Tenant is  (SOMETIMES  ALSO
     leasing at any time  pursuant to the CALLED THE  PREMISES):  provisions  of
     this Lease.

PREMISES A: That certain  portion of Phase I of the Building,  consisting of the
     greater  of (i)  35,554  rentable  square  feet of floor  area and (ii) the
     product of (x) 185 rentable  square feet of floor area or (y) the number of
     Tenant employees to be occupying  Premises A (as set forth in a notice from
     Tenant to Landlord to be given no later than April 1, 1999)  located on the
     first,  second  and/or  third  floors of Phase I of the  Building and to be
     designated  by  Tenant  in the  aforesaid  notice  to  Landlord  (it  being
     understood  and agreed  that if no such  notice is given,  Premises A shall
     consist of 35,554 rentable square feet of floor area).

PREMISES B:  That  certain  portion  of Phase I of the  Building  (exclusive  of
     Premises A),  consisting of the greater of (i) 33,534  rentable square feet
     of floor area or (ii) the product of (x) 185 rentable  square feet of floor
     area and (y) the number of Tenant employees to be occupying  Premises B (as
     set forth in a notice  from  Tenant to  Landlord  to be given no later than
     June 1, 1999) located on the first,  second,  third and/or fourth floors of
     Phase I of the Building  and to be  designated  by Tenant in the  aforesaid
     notice to Landlord.  Notwithstanding  the foregoing,  in no event shall the
     sum of the Rentable Floor Area of Premises A and the Rentable Floor Area of
     Premises  B (each as  hereinafter  defined)  be less than  69,088  rentable
     square  feet of floor  area or  greater  than  the  greater  of (a)  69,088
     rentable  square  feet of floor area or (b) 185 square feet times the total
     number of Tenant employees to be occupying Premises A and Premises B.

PREMISES C:  That  certain  portion  of Phase I of the  Building  (exclusive  of
     Premises  A and  Premises  B),  consisting  of the  greater  of (i)  24,624
     rentable  square feet of floor area or (ii) the product of (x) 185 rentable
     square  feet of floor  area and (y) the  number of Tenant  employees  to be
     occupying  Premises C (as set forth in a notice  from Tenant to Landlord to
     be given no later than  September  1, 1999)  located on the first,  second,
     third and/or  fourth floors of Phase I of the Building and to be designated
     by  Tenant  in  the  aforesaid  notice  to  Landlord.  Notwithstanding  the
     foregoing, in no event shall the sum of the Rentable Floor Area of Premises
     A, the  Rentable  Floor Area of Premises B and the  Rentable  Floor Area of
     Premises  C (each as  hereinafter  defined)  be less than  93,712  rentable
     square  feet of floor  area or  greater  than  the  greater  of (a)  93,712
     rentable  square  feet of floor area or (b) 185 square feet times the total
     number of Tenant employees to be occupying Premises A, B and C.

PREMISES D:  That  certain  portion  of Phase I of the  Building  (exclusive  of
     Premises A, Premises B and Premises C), consisting of an amount of rentable
     floor area located on the first,  second, third and/or fourth floors of the
     Building  (which such amount shall equal the  difference  between the Total
     Rentable  Floor Area of Phase I of the Building and the sum of the Rentable
     Floor Area of  Premises  A, the  Rentable  Floor Area of Premises B and the
     Rentable  Floor Area of Premises C, as hereinafter  defined).  Tenant shall
     provide  Landlord with thirty (30) days prior written notice of the date on
     which it intends to occupy Premises D.

RENTABLE FLOOR AREA The  rentable  floor area of all of the space at OF TENANT'S
     SPACE any given time under lease to Tenant in the (SOMETIMES  ALSO Building
     under this Lease,  including the CALLED  RENTABLE FLOOR Rentable Floor Area
     of Premises A, the AREA OF THE  PREMISES):  Rentable Floor Area of Premises
     B, the  Rentable  Floor  Area of  Premises  C, the  Rentable  Floor Area of
     Premises D and any space  added  thereto by Tenant  pursuant  to its rights
     under this Lease.

RENTABLE FLOOR AREA The square  footage to be  determined  as set OF PREMISES A:
     forth in the definition of Premises A above.

RENTABLE FLOOR AREA The square  footage to be  determined  as set OF PREMISES B:
     forth in the definition of Premises B above.

RENTABLE FLOOR AREA The square  footage to be  determined  as set OF PREMISES C:
     forth in the definition of Premises C above.

RENTABLE FLOOR AREA The square  footage to be  determined  as set OF PREMISES D:
     forth in the definition of Premises D above.

         TOTAL RENTABLE FLOOR
         AREA OF PREMISES A,
         PREMISES B, PREMISES
         C AND PREMISES D:               129,199 square feet.

         TOTAL RENTABLE FLOOR
         AREA OF PHASE I OF THE
         BUILDING:                       129,199 square feet.

         TOTAL RENTABLE FLOOR
         AREA OF PHASE II OF
         THE BUILDING:                   119,142 square feet.

         TOTAL RENTABLE FLOOR
         REA OF THE BUILDING:            248,341 square feet.

          NUMBER OF TENANT'S To be provided at a ratio of 3.8 spaces per PARKING
               SPACES:  1,000  square  feet of  Rentable  Floor Area of Tenant's
               Space,  exclusive  of the  Parking  Structure  to be  constructed
               pursuant to and in accordance with Section 8.22 below.

          ANNUAL FIXED RENT The sum of the Annual  Fixed Rents  (SOMETIMES  ALSO
               CALLED  applicable  to the Premises  under lease FIXED RENT):  to
               Tenant in the Building under this Lease.

          ANNUAL FIXED  RENT FOR (a)  During the first  thirty-six  (36)  months
               PREMISES A: of the  Original  Term of this Lease plus the partial
               month,  if any, in which the  Measuring  Date (as defined  above)
               occurs  (to  the  extent  occurring  during  any  portion  of the
               Premises A Term) at an annual  rate  equal to the  product of (i)
               $29.50  and (ii)  the  Rentable  Floor  Area of  Premises  A? (as
               defined in this Section 1.1).

          (b)  During  the  thirty-seventh  (37th)  through  the  seventy-second
               (72nd)  months of the  Original  Term of this  Lease at an annual
               rate equal to the  product  of (i)  $31.00 and (ii) the  Rentable
               Floor Area of Premises A.

          (c)  During the seventy-third (73rd) through the one hundred twentieth
               (120th)  months of the  Original  Term of this Lease at an annual
               rate equal to the  product  of (i)  $33.00 and (ii) the  Rentable
               Floor Area of Premises A.

          ANNUAL FIXED RENT FOR (a) During the first  thirty-six  (36) months of
               PREMISES  B: the  Original  Term of this Lease  plus the  partial
               month,  if any, in which the  Measuring  Date (as defined  above)
               occurs  (to  the  extent  occurring  during  any  portion  of the
               Premises B Term) at an annual  rate  equal to the  product of (i)
               $29.50  and (ii) the  "Rentable  Floor  Area of  Premises  B" (as
               defined in this Section 1.1).

          (b)  During  the  thirty-seventh  (37th)  through  the  seventy-second
               (72nd) month of the Original Term of this Lease at an annual rate
               equal to the  product of (i) $31.00 and (ii) the  Rentable  Floor
               Area of Premises B.

          (c)  During the seventy-third (73rd) through the one hundred twentieth
               (120th)  months of the  Original  Term of this Lease at an annual
               rate equal to the  product  of (i)  $33.00 and (ii) the  Rentable
               Floor Area of Premises B.

          ANNUAL FIXED RENT FOR (a) During the first  thirty-six  (36) months of
               PREMISES  C: the  Original  Term of this Lease  plus the  partial
               month,  if any, in which the  Measuring  Date (as defined  above)
               occurs  (to  the  extent  occurring  during  any  portion  of the
               Premises C Term) at an annual  rate  equal to the  product of (i)
               $29.50  and (ii) the  "Rentable  Floor  Area of  Premises  C" (as
               defined in this Section 1.1).

          (b)  During  the  thirty-seventh  (37th)  through  the  seventy-second
               months of the Original Term of this Lease at an annual rate equal
               to the product of (i) $31.00 and (ii) the Rentable  Floor Area of
               Premises C.

          (c)  During the seventy-third (73rd) through the one hundred twentieth
               (120th)  months of the  Original  Term of this Lease at an annual
               rate equal to the  product  of (i)  $33.00 and (ii) the  Rentable
               Floor Area of Premises C.

          ANNUAL FIXED RENT FOR (a) During the first  thirty-six  (36) months of
               PREMISES  D: the  Original  Term of this Lease  plus the  partial
               month,  if any, in which the  Measuring  Date (as defined  above)
               occurs  (to  the  extent  occurring  during  any  portion  of the
               Premises D Term) at an annual  rate  equal to the  product of (i)
               $29.50  and (ii) the  "Rentable  Floor  Area of  Premises  D" (as
               defined in this Section 1.1).

          (b)  During  the  thirty-seventh  (37th)  through  the  seventy-second
               months of the Original Term of this Lease at an annual rate equal
               to the product of (i) $31.00 and (ii) the Rentable  Floor Area of
               Premises D.

          (c)  During the seventy-third (73rd) through the one hundred twentieth
               (120th)  months of the  Original  Term of this Lease at an annual
               rate equal to the  product  of (i)  $33.00 and (ii) the  Rentable
               Floor Area of Premises D.

          ANNUAL FIXED RENT As  determined  pursuant to Section 2.4.1 DURING THE
               EXTENDED if the extension  option(s) are  exercised  TERM(S):  in
               accordance with Section 2.4.1.

          OPERATING EXPENSES:            As provided in Section 2.6 hereof.

          REAL ESTATE TAXES:             As provided in Section 2.7 hereof.

          TENANT  ELECTRICITY:  Initially  as provided in Section 2.5 subject to
               adjustment as provided in Section 2.8.

          PERMITTED USES:                General office purposes.


          INITIAL MINIMUM  $5,000,000.00  per occurrence on a LIMITS OF TENANT'S
               per location basis and in the aggregate, COMMERCIAL GENERAL which
               can be made up with a combination of LIABILITY INSURANCE: primary
               and excess coverage.

          BROKER:                        Meredith & Grew, Inc.
                                         160 Federal Street
                                         Boston, Massachusetts 02110


1.2      Exhibits.  There are incorporated as part of this Lease:

         EXHIBIT A                       Description of Site

         EXHIBIT A-1                     Site Plan

         EXHIBIT B                       Base Building Outline Specifications

         EXHIBIT B-1                     Tenant Plan and Working Drawing
                                         Requirements

         EXHIBIT C                       Tenant Improvements

         EXHIBIT D                       Landlord's Services

         EXHIBIT E                       Floor Plans

         EXHIBIT F                       Form of Commencement Date Agreement

         EXHIBIT G                       Broker Determination of Prevailing 
                                         Market Rent

         EXHIBIT H                       Dense File Room


1.3      Table of Articles and Sections

         ARTICLE I-REFERENCE DATA

         1.1      Subjects Referred to

         1.2      Exhibits

         1.3      Table of Articles and Sections

         ARTICLE II-THE BUILDINGS, PREMISES, TERM AND RENT

         2.0      Construction of Phase II of the Building

         2.1      The Premises

                  2.1.1    Tenant's Initial Right of First Offer

                  2.1.2    Tenant's Secondary Right of First Offer

                  2.1.3    Tenant's Expansion Obligation

         2.2      Rights To Use Common Facilities

                  2.2.1    Tenant's Parking

         2.3      Landlord's Reservations

         2.4      Original Term

                  2.4.1    Extension Options

         2.5      Monthly Fixed Rent Payments

         2.6      Adjustment for Operating Expenses

         2.7      Adjustment for Real Estate Taxes

         2.8      Adjustment for Tenant Electricity

         2.9      Certain Adjustments to Operating Expenses


         ARTICLE III-CONSTRUCTION

         3.0      Base Building

         3.1      Tenant's Plans and Tenant Plan Excess Costs

                  3.1.1    Special Allowance

                  3.1.2    Change Orders

         3.2      Landlord's and Tenant's Work; Delays

         3.3      Alterations and Additions

         3.4      General Provisions Applicable to Construction


         ARTICLE IV-LANDLORD'S COVENANTS; INTERRUPTIONS AND DELAYS

         4.1      Landlord's Covenants

                  4.1.1    Services Furnished by Landlord

                  4.1.2    Additional Services Available to Tenant

                  4.1.3    Roof, Exterior Wall, Floor Slab and Common Facility
                           Repairs

                  4.1.4    Door Signs

         4.2      Interruptions and Delays in Services and Repairs, etc.

         4.3      Environmental Laws

         4.4      Insurance

         4.5      Indemnity

         4.6      Leasing Restrictions


         ARTICLE V-TENANT'S COVENANTS

         5.1      Payments

         5.2      Repair and Yield Up

         5.3      Use

         5.4      Obstructions; Items Visible From Exterior; Rules and 
                  Regulations

         5.5      Safety Appliances; Licenses

         5.6      Assignment; Sublease

         5.7      Indemnity; Insurance

         5.8      Personal Property at Tenant's Risk

         5.9      Right of Entry

         5.10     Floor Load; Prevention of Vibration and Noise

         5.11     Personal Property Taxes


         ARTICLE VI-CASUALTY AND TAKING

         6.1      Fire and Casualty-Termination or Restoration; Rent Adjustment

         6.2      Uninsured Casualty

         6.3      Eminent Domain-Termination or Restoration

         6.4      Eminent Domain Damages Reserved


         ARTICLE VII-DEFAULT

         7.1      Tenant's Default

         7.2      Landlord's Default


         ARTICLE VIII-MISCELLANEOUS PROVISIONS

         8.1      Extra Hazardous Use

         8.2      Waiver

         8.3      Cumulative Remedies

         8.4      Quiet Enjoyment

         8.5      Notice To Mortgagee and Ground Lessor

         8.6      Assignment of Rents

         8.7      Surrender

         8.8      Brokerage

         8.9      Invalidity of Particular Provisions

         8.10     Provisions Binding, Etc.

         8.11     Recording

         8.12     Notices

         8.13     When Lease Becomes Binding

         8.14     Section Headings

         8.15     Rights of Mortgagee

         8.16     Status Report

         8.17     Self-Help

         8.18     Holding Over

         8.19     Non-Subrogation

         8.20     Corporate Signage

         8.21     Food Service Facility

         8.22     Parking Structure

         8.23     Governing Law


                                                     ARTICLE II

                                          BUILDING, PREMISES, TERM AND RENT

2.0      CONSTRUCTION  OF PHASE II OF THE  BUILDING.  Phase I of the Building is
         presently under  construction on the Site. In addition,  Landlord shall
         construct  Phase  II  of  the  Building  and  parking  areas,  garages,
         structures  and/or decks and other  improvements  associated  therewith
         (collectively  called "Phase II of the Building And  Improvements")  of
         substantially  similar  size,  shape,   dimensions,   architecture  and
         location  as shown on  Exhibit  A-1  attached  hereto.  In  conjunction
         therewith,  Landlord  shall perform any and all site work or other work
         to the Site and Phase I of the  Building  required  therefor  and/or to
         integrate  Phase I of the Building and Phase II of the Building and all
         parking areas,  garages,  structures and decks into one unified Complex
         including,   but  not  limited  to,  the   layout,   modification   and
         installation of utilities,  access,  landscaping and additional parking
         as set forth in Exhibit  A-1.  During  construction  of Phase II of the
         Building And  Improvements,  Landlord  shall use good faith  efforts to
         minimize  material  interference  with  Tenant's  use  of  the  Complex
         consistent with the fact that construction will be occurring.

2.1      Landlord  hereby demises and leases to Tenant,  and Tenant hereby hires
         and accepts from  Landlord,  Tenant's  Space in the Building  excluding
         exterior faces of exterior walls, the common stairways,  stairwells and
         exitways,  elevators and elevator wells, elevator lobbies, toilets, fan
         rooms,  electric and telephone  closets,  janitor  closets,  and pipes,
         ducts, conduits, wires and appurtenant fixtures serving exclusively, or
         in common, other parts of the Building.

         Tenant's Space with such  exclusions is hereinafter  referred to as the
         "Premises".  The term  "Building"  means the  Building  as  defined  in
         Section  1.1,  and which is the subject of this Lease;  the term "Site"
         means all,  and also any part of the Land  described in Exhibit A, plus
         any additions or reductions  thereto  resulting  from the change of any
         abutting  street line and all parking  areas and  structures.  The term
         "Property" means the Building and the Site.

2.1.1    (A)  Landlord   shall  give  Tenant   notice  every  three  (3)  months
         (Landlord's Availability Notice), beginning with the first day of the
          third  (3rd)  month  following  the  Date  of  this  Lease,  as to the
          availability  of space for lease in Phase II of the  Building  and the
          business terms upon which Landlord is currently  offering the space in
          the marketplace,  until such time as all such space has been initially
          leased.  Landlord  agrees not to enter into a lease for any portion of
          Phase II of the  Building  identified  as being  available in the most
          recent Landlord's  Availability  Notice without first giving to Tenant
          an opportunity to lease such space as hereinafter  set forth (Tenant's
          Initial  Right of First  Offer),  provided  that at the time  Landlord
          receives  the  above-described  notice from Tenant (i) there exists no
          Event of Default (as defined in Section 7.1 below), (ii) this Lease is
          still in full force and effect  and (iii)  Tenant has not sublet  more
          than forty percent (40%) of the Rentable Floor Area of the Premises in
          the aggregate  (not  including any  subleasing  under Section  5.6.1).
          Landlord shall  otherwise use its best efforts to keep Tenant informed
          of the expansion  opportunities  and leasing  activity for Phase II of
          the Building.

         (B) If Tenant wishes to exercise  Tenant's Initial Right of First Offer
         with  respect  to any  portion of Phase II of the  Building  identified
         Initial in the most recent Landlord's  Availability Notice (the Initial
         Offer Space),  Tenant shall do so by giving Landlord notice of Tenant's
         desire to lease such space on the business terms  described by Landlord
         in the most  recent  Landlord's  Availability  Notice  within  five (5)
         business days after the date thereof. If Tenant shall give such notice,
         the same shall  constitute  an  agreement to enter into an amendment to
         this Lease to  incorporate  such space into the Premises upon the terms
         set forth in  Landlord's  notice.  Notwithstanding  the  foregoing,  if
         Tenant commits to lease any of the Initial Offer Space before or within
         the first six (6) months of the Term of this Lease, such space shall be
         leased by Tenant  upon the same  terms and  conditions  as set forth in
         this  Lease  (including,  without  limitation,  the term of the  Lease,
         annual fixed rent rate,  operating expense and tax bases and provisions
         for tenant  electricity  with respect to such space;  provided that the
         tenant  improvements  for such space shall be in the same proportion to
         the rentable  square  footage of such space as the Tenant  Improvements
         referred  to in Exhibit C below are to the  Rentable  Floor Area of the
         Premises  and Landlord  shall also provide  Tenant with an allowance of
         $2.13 per rentable  square foot of the Initial Offer Space).  If Tenant
         shall not so exercise such right within such period,  time being of the
         essence in respect of such exercise, Landlord shall be free at any time
         thereafter to enter into a lease of such space with another prospective
         tenant upon terms  substantially  no less  favorable  to Landlord  than
         those  set forth in the most  recent  Landlord's  Availability  Notice,
         provided that Landlord shall reoffer such space to Tenant in accordance
         with the terms of this  Section  2.1.1 prior to leasing such space upon
         terms substantially less favorable to Landlord.

2.1.2     (A) If Tenant shall not exercise Tenant's Initial Right of First Offer
          in accordance  with the  provisions  of Section 2.1.1 above,  Landlord
          shall be free to lease such space in accordance with the terms of said
          Section. The terms of such leases,  including, but not limited to, the
          original  terms  thereof,  options  to extend  the terms  thereof  and
          amendments  thereto  are  hereinafter  individually  and  collectively
          called the "Initial  Leases" and the tenants under the Initial  Leases
          are  hereinafter  individually  and  collectively  called the "Initial
          Tenants".  Subject to the Initial Leases and the rights of the Initial
          Tenants  thereunder,  which rights are hereby made prior to the rights
          of Tenant under this Section 2.1.2,  notwithstanding  that the Initial
          Leases and amendments thereto may have been executed subsequent to the
          date of this Lease,  and subject to the terms of this  Section  2.1.2,
          Landlord  agrees  not to enter  into a lease or leases to relet  space
          within the  Initial  Offer  Space  without  first  giving to Tenant an
          opportunity  to lease such space as  hereinafter  set forth,  provided
          that at any time any  portion of the Initial  Offer  Space  becomes so
          available  hereunder  for  reletting  (i)  there  exists  no  Event of
          Default,  (ii) this  Lease is still in full force and effect and (iii)
          Tenant  continues  to occupy at least  91,000  square feet of rentable
          floor area in the  Building.  Landlord  shall use best efforts to keep
          Tenant   informed  of  the  possibility  of  such  space  becoming  so
          available.

         (B) When any such space becomes available for reletting, Landlord shall
         notify Tenant of the availability of such space and shall advise Tenant
         of the business  terms upon which  Landlord is willing so to lease such
         space. If Tenant wishes to exercise Tenant's right of first offer or to
         negotiate  the  business  terms  upon which such space is to be leased,
         Tenant  shall do so by giving  Landlord  notice of  Tenant's  desire to
         lease such space on such terms  within  seven (7)  business  days after
         Landlord's  notice to Tenant of the  availability  of such space and of
         such terms. If Tenant shall give such notice, the same shall constitute
         an agreement  to enter into an  amendment to this Lease to  incorporate
         such space  into the  Premises  upon the terms set forth in  Landlord's
         notice.  If Tenant  shall not so exercise  such right within such seven
         (7) day period,  or if Landlord and Tenant shall be unable to negotiate
         in good faith the terms upon which the space is to be leased within ten
         (10) business days  following  receipt by Landlord of Tenant's  notice,
         time  being of the  essence  in  respect  of either  such time  period,
         Landlord shall be free at any time  thereafter to enter into a lease of
         such space with another  prospective tenant upon terms substantially no
         less favorable to Landlord than those set forth in Landlord's notice to
         Tenant,  provided that  Landlord  shall reoffer such space to Tenant in
         accordance  with the terms of this Section  2.1.2 prior to leasing such
         space upon terms substantially less favorable to Landlord.

         (C) If Tenant  shall  exercise  any such  right of first  offer and if,
         thereafter,  the then  occupant of the  premises  with respect to which
         Tenant shall have so exercised such right  wrongfully  fails to deliver
         possession  of such  premises at the time when its tenancy is scheduled
         to expire,  Landlord shall use all reasonable efforts and due diligence
         (which shall be limited to the commencement and prosecution  thereafter
         of  eviction  proceedings  and to the  payment  of legal fees and other
         expenses  reasonably  associated with such  proceedings but which shall
         not require the taking of any appeal) to evict such  occupant  from the
         applicable portion of the Initial Offer Space and to deliver possession
         of the applicable  portion of the Initial Offer Space to Tenant as soon
         as may be practicable.  Commencement of the term of Tenant's  occupancy
         and lease of such additional  space shall, in the event of such holding
         over by such occupant,  be deferred until  possession of the additional
         space is delivered to Tenant.  The failure of the then occupant of such
         premises to so vacate shall not give Tenant any right to terminate this
         Lease or to deduct from,  offset against or withhold Annual Fixed Rent,
         additional  rent or other charges due under this Lease (or any portions
         thereof), provided that the obligation to pay rent with respect to such
         Initial  Offer  Space  shall not  commence  until the  delivery of such
         space.

2.1.3     (A) Landlord shall reserve  approximately 20,000 to 30,000 square feet
          of  rentable  floor area in Phase II of the  Building  (the  Expansion
          Premises),  which shall be made  available to Tenant upon no less than
          twelve (12) month's  notice from Landlord to Tenant that such space is
          available (Landlord's  Expansion Notice).  Landlord's Expansion Notice
          shall set forth the  following,  each as determined by Landlord in its
          sole  discretion  except as expressly set forth in this Section 2.1.3:
          (i) the actual  rentable  floor  area and  location  of the  Expansion
          Premises,  (ii) the date upon which the  Expansion  Premises  shall be
          made  available to Tenant (the  Effective  Date),  which such date may
          occur  at  any  time   during  the   thirty-seventh   (37th)   through
          fifty-second  (52nd)  months  of the  Term of  this  Lease  and  (iii)
          Landlord's  quotation  of an  annual  fixed  rent  for  the  Expansion
          Premises.  In the  event  that  parties  are  unable  to  agree  after
          negotiating in good faith on a  determination  of an annual rental for
          the Expansion  Premises  within  twenty-one (21) days after receipt by
          Tenant of  Landlord's  Expansion  Notice,  then such  rental  shall be
          determined pursuant to the Broker Determination procedure set forth in
          Section  2.4.1(B)  below.  Effective as of the Effective Date, for the
          remainder of the Term of this Lease (including any extensions thereof)
          the Expansion  Premises shall be  automatically  added to the Premises
          demised  under  this  Lease  upon all the same  terms  and  conditions
          applicable to the  Premises;  provided,  however,  that (x) the annual
          fixed rent for the  Expansion  Premises  shall be the  rental  rate as
          mutually  agreed upon by the parties  within the  twenty-one  (21) day
          period referred to in subsection (iii) above or the rate as determined
          by the Broker  Determination,  as  appropriate,  and (y) the Expansion
          Premises shall be delivered in as is condition and Landlord shall have
          no  obligation  to perform or to provide to Tenant any  allowance  for
          additions,  alterations  or  improvements  in  and  to  the  Expansion
          Premises.  Notwithstanding anything contained in this Section 2.1.3 to
          the  contrary,  the Expansion  Premises  shall only be so added to the
          Premises if both as of the date of Landlord's  Expansion Notice and as
          of the  Effective  Date (a) there  exists no Event of Default  and (b)
          this  Lease  is still  in full  force  and  effect.  If the  Expansion
          Premises  shall be added to the  Premises as provided in this  Section
          2.1.3,  Landlord  and Tenant shall enter into an  instrument  amending
          this Lease to add such  Expansion  Premises  within  thirty  (30) days
          prior to the Effective Date,  provided,  however,  that the failure to
          enter into such an  instrument  shall not affect the  addition  of the
          Expansion Premises to the Premises.

         (B) If the then occupant(s) of the Expansion Premises  wrongfully fails
         to deliver  possession of such premises at the time when its tenancy is
         scheduled to expire,  Landlord shall use all reasonable efforts and due
         diligence  (which shall be limited to the  commencement and prosecution
         thereafter of eviction proceedings and to the payment of legal fees and
         other expenses  reasonably  associated with such  proceedings but which
         shall not require  the taking of any appeal) to evict such  occupant(s)
         from the Expansion  Premises and to deliver possession of the Expansion
         Premises to Tenant as soon as may be  practicable.  Commencement of the
         term of Tenant's  occupancy and lease of the Expansion  Premises shall,
         in the event of such  holding  over by such  occupant(s),  be  deferred
         until possession of the Expansion  Premises is delivered to Tenant. The
         failure of the then occupant(s) of such premises to so vacate shall not
         give Tenant any right to terminate this Lease or to deduct from, offset
         against or withhold Annual Fixed Rent, additional rent or other charges
         due under  this  Lease (or any  portions  thereof),  provided  that the
         obligation to pay rent with respect to the Expansion Premises shall not
         commence until the delivery of such space.

2.2      Tenant shall have, as appurtenant  to the Premises,  the non- exclusive
         right to use in common  with  others,  subject to  reasonable  rules of
         general applicability to tenants of the Building from time to time made
         by Landlord of which  Tenant is given  reasonable  prior notice (a) the
         common lobbies, corridors, stairways, stairwells, exit ways, elevators,
         elevator wells, fan rooms,  electrical and telephone  closets,  janitor
         closets  and  loading  area  of the  Building,  and the  pipes,  ducts,
         conduits,  wires and appurtenant meters, fixtures and equipment serving
         the Premises in common with others, (b) common walkways,  driveways and
         parking  areas  necessary  for access to the Building and the Property,
         and (c) if the  Premises  include less than the entire  rentable  floor
         area of any floor, the common toilets,  corridors and elevator lobby of
         such floor.

2.2.1     In addition, Tenant shall have the right to use the Number of Tenant's
          Parking  Spaces  (referred to in Section  1.1),  in common with use by
          other  tenants from time to time of the Complex,  of the parking area.
          Tenant  covenants  and agrees  that it and all  persons  claiming  by,
          through and under it, shall at all times abide by all reasonable rules
          and regulations promulgated by Landlord with respect to the use of the
          parking areas on the Site,  provided  that  Landlord  shall not charge
          additional  rent or fees for use of the  parking  areas.  The  parking
          privileges granted herein are non- transferable  except to a permitted
          assignee or  subtenant  as  provided  in Section  5.6 through  Section
          5.6.6. Further, Landlord assumes no responsibility whatsoever for loss
          or damage due to fire, theft or otherwise to any automobile(s)  parked
          on the Site or to any personal property therein,  except to the extent
          caused by Landlord's negligence, and Tenant covenants and agrees, upon
          request  from  Landlord  from time to time,  to notify  its  officers,
          employees, agents and invitees of such limitation of liability. Tenant
          acknowledges and agrees that a license only is hereby granted,  and no
          bailment is intended or shall be created.

2.3      Landlord  reserves  the right from time to time,  without  unreasonable
         interference with Tenant's use: (a) to install, use, maintain,  repair,
         replace and relocate for service to the Premises and other parts of the
         Building,  or either,  pipes,  ducts,  conduits,  wires and appurtenant
         fixtures,  wherever  located in the  Premises or  Building,  and (b) to
         alter  or  relocate   any  other   common   facility,   provided   that
         substitutions  are  substantially  equivalent  or  better  and  are  in
         compliance  with all applicable  building and zoning laws, and that the
         total number of parking  spaces  available  to Tenant is not  decreased
         below that  required to be  provided  under this  Lease,  and  provided
         further that Tenant is given seven (7) days prior notice of  Landlord's
         exercise  of  such  right,   except  in   emergencies.   Installations,
         replacements  and relocations  referred to in clause (a) above shall be
         located so far as practicable in the central core area of the Building,
         above ceiling surfaces,  below floor surfaces or within perimeter walls
         of the Premises.

2.4      (A) Unless sooner terminated as provided in Article VI or VII or unless
         extended as provided in Section 2.4.1,  Tenant shall have and hold: (a)
         Premises A for a period  commencing  on (the  Premises  A  Commencement
         Date)  the  earlier  to  occur of (i) the  later  of (x) the date  such
         premises are  "Substantially  Complete" (as defined in Section 3.2) and
         (y) the  Premises A  Scheduled  Commencement  Date and (ii) the date on
         which Tenant commences  occupancy of Premises A for the Permitted Uses,
         and continuing thereafter for the Premises A Term; (b) Premises B for a
         period commencing on (the Premises B Commencement  Date) the earlier to
         occur of (i) the later of (x) the date such premises are  Substantially
         Complete  and (y) Premises B Scheduled  Commencement  Date and (ii) the
         date  on  which  Tenant  commences  occupancy  of  Premises  B for  the
         Permitted Uses, and continuing  thereafter for the Premises B Term; (c)
         Premises C for a period  commencing  on (the  Premises  C  Commencement
         Date)  the  earlier  to  occur of (i) the  later  of (x) the date  such
         premises  are  Substantially  Complete and (y) the Premises C Scheduled
         Commencement Date and (ii) the date on which Tenant commences occupancy
         of Premises C for the Permitted  Uses,  and  continuing  thereafter for
         Premises C Term:  and (d)  Premises D for a period  commencing  on (the
         Premises D Commencement  Date) the earlier to occur of (i) the later of
         (x) the date  such  premises  are  Substantially  Complete  and (y) the
         Premises  D  Scheduled  Commencement  Date  and  (ii) the date on which
         Tenant  commences  occupancy of Premises D for the Permitted  Uses, and
         continuing thereafter for the Premises D Term.

         Notwithstanding  the fact that the Premises A  Commencement  Date,  the
         Premises B Commencement  Date, the Premises C Commencement  Date and/or
         the  Premises D  Commencement  Date shall not have  occurred,  Landlord
         shall permit Tenant access to the  applicable  portion of the Premises,
         when it can be done without material interference to any remaining work
         to be completed under Article III below, so that Tenant may install its
         trade fixtures,  furniture and telecommunications and computer systems;
         provided,  however,  that such early  access  shall be  governed by the
         terms and  conditions  of this Lease  (with the  exception  of Tenant's
         obligation  to  pay  Annual  Fixed  Rent  and  Tenant's   payments  for
         electricity  charges,  operating  expenses  and real estate  taxes,  as
         herein provided).

         (B) As soon as may be convenient  after the date has been determined on
         which each of the Premises A Term,  the Premises B Term, the Premises C
         Term,  and the  Premises D Term  commence,  respectively,  Landlord and
         Tenant  agree to join with  each  other in the  execution  of a written
         Declaration,  in the form of Exhibit F, in which the date on which each
         such Term  commences as aforesaid and the Term of the Lease for each of
         the Premises A, Premises B, Premises C and Premises D shall be stated.

2.4.1     (A)  Provided  that at the time of exercise  and  commencement  of the
          applicable  option to  extend  (i)  there  exists no Event of  Default
          (defined in Section  7.1),  (ii) this Lease is still in full force and
          effect,  and (iii) Tenant has not sublet more than forty percent (40%)
          of the  Rentable  Floor Area of the  Premises  in the  aggregate  (not
          including any subleasing  under Section 5.6.1),  Tenant shall have the
          right to extend the Term hereof  upon all the same terms,  conditions,
          covenants and agreements herein contained (except for the Annual Fixed
          Rent which shall be adjusted  during the  applicable  option period as
          hereinbelow  set  forth)  for two (2)  successive  periods of five (5)
          years each as hereinafter  set forth.  Each option period is sometimes
          herein referred to as an "Extended Term."

         (B) (i) If Tenant desires to exercise the  applicable  option to extend
         the Term,  then Tenant shall give notice to Landlord,  not earlier than
         fifteen  (15) months nor later than  twelve  (12)  months  prior to the
         expiration  of the Term of this Lease,  or Extended  Term if previously
         extended,  of Tenant's request for Landlord's  quotation to Tenant of a
         proposed  annual fixed rent for the  applicable  Extended  Term,  which
         shall be expressed in relation to the tax and operating  cost bases and
         provisions for payment of tenant  electricity  contained in this Lease.
         If at the  expiration  of thirty (30) days after the date when Landlord
         receives  Tenant's  written  request  as  aforesaid  (the  "Negotiation
         Period"),   Landlord  and  Tenant  have  not  reached  agreement  on  a
         determination of an annual rental for the applicable  Extended Term and
         executed a written instrument extending the Term of this Lease pursuant
         to such agreement,  then Tenant shall have the right,  for fifteen (15)
         days  following the  expiration of the  Negotiation  Period,  to make a
         request  to  Landlord   for  a  broker   determination   (the   "Broker
         Determination") of the Prevailing Market Rent (as defined in Exhibit G)
         for the applicable  Extended Term, which Broker  Determination shall be
         made in the manner set forth in Exhibit G.

         (B)  (ii)  If  Tenant   timely   shall   have   requested   the  Broker
         Determination,  then in order to exercise  its right to extend the Term
         of this Lease for the applicable Extended Term, Tenant,  within fifteen
         (15) days after receipt of the Broker Determination, shall give written
         notice to Landlord of Tenant's exercise of its right to extend the Term
         of this  Lease  for  the  applicable  Extended  Term  pursuant  to this
         subsection  (B)  (ii),  in which  case the  Annual  Fixed  Rent for the
         applicable  Extended  Term  shall  be the  Prevailing  Market  Rent  as
         determined  by the  Broker  Determination  and  shall be  expressed  in
         relation to the tax and operating cost bases and provisions for payment
         of tenant  electricity  as contained in this Lease.  Upon the giving of
         notice by Tenant  within  said  fifteen  (15) day period as provided in
         this  subsection  (B) (ii) then this  Lease  and Term  hereof  shall be
         extended for an additional  term of five (5) years upon all of the same
         terms,  conditions,  covenants and  agreements  contained in this Lease
         except  that the Annual  Fixed Rent for the  applicable  Extended  Term
         shall be the rent determined as described in this subparagraph.

         (C) Upon the giving of notice by Tenant to Landlord exercising Tenant's
         option  to  extend  the  Term of this  Lease  in  accordance  with  the
         provisions of either  subsection  B(i) or B(ii) above,  then this Lease
         and the Term hereof  shall be  extended,  for the  applicable  Extended
         Term,  without  the  necessity  for  the  execution  of any  additional
         documents,  except  that  Landlord  and  Tenant  agree to enter into an
         instrument  in  writing  setting  forth the  Annual  Fixed Rent for the
         applicable Extended Term as determined in the relevant manner set forth
         in this Section 2.4.1;  and in such event all references  herein to the
         Lease Term or the term of this Lease shall be construed as referring to
         the Lease Term, as so extended,  unless the context  clearly  otherwise
         requires. Notwithstanding anything herein contained to the contrary, in
         no  event  shall  Tenant  have  the  right to  exercise  more  than one
         extension  option at a time  and,  further,  Tenant  shall not have the
         right to  exercise  its  second  extension  option  unless  it has duly
         exercised  its first  extension  option and in no event  shall the Term
         hereof be extended for more than ten (10) years after the expiration of
         the Original Term hereof.

2.5      Tenant  agrees to pay to  Landlord,  or as  directed  by  Landlord,  at
         Landlord's Original Address specified in Section 1.1 hereof, or at such
         other place as Landlord shall from time to time designate by notice, on
         the  applicable  Commencement  Date (defined in Section 1.1 hereof) and
         thereafter monthly, in advance,  (i) on the first day of each and every
         calendar month during the Original Term, a sum equal to (a) one twelfth
         (1/12th) of the Annual  Fixed Rent for each of Premises A,  Premises B,
         Premises C and the Fourth  Floor  Premises,  respectively,  and (b) one
         twelfth  (1/12th)  of $1.00 per annum for each  square foot of Rentable
         Floor  Area  of  Tenant's  Space  for  Tenant  Electricity  subject  to
         escalation as provided in Section 2.8 and (ii) on the first day of each
         and every  calendar  month  during  each  extension  option  period (if
         exercised), a sum equal to (a) one twelfth (1/12th) of the annual fixed
         rent as determined in Section 2.4.1 for the applicable extension option
         period  plus  (b)  the  then  applicable  monthly  electricity  charges
         (subject to  escalation  as provided in Section  2.8).  Until notice of
         some other  designation is given,  fixed rent and all other charges for
         which  provision is herein made shall be paid by  remittance  to or for
         the order of Boston Properties Limited  Partnership,  Agents,  P.O. Box
         3557, Boston, Massachusetts 02241-3557, and all remittances received by
         Boston Properties Limited  Partnership,  as Agents as aforesaid,  or by
         any subsequently  designated recipient,  shall be treated as payment to
         Landlord.

         Annual Fixed Rent and  electricity  charges for any partial month shall
         be paid by Tenant to Landlord at such rate on a pro rata basis, and, if
         the applicable Commencement Date is a day other than the first day of a
         calendar  month,  the first payment which Tenant shall make to Landlord
         shall be a payment equal to a proportionate part of such monthly Annual
         Fixed  Rent for the  partial  month from the  Commencement  Date to the
         first day of the succeeding calendar month.

         Other  charges  payable by Tenant on a monthly  basis,  as  hereinafter
         provided,  likewise shall be prorated, and the first payment on account
         thereof shall be determined  in similar  fashion but shall  commence on
         the applicable  Commencement  Date; and other  provisions of this Lease
         calling  for  monthly  payments  shall  be read as  incorporating  this
         undertaking by Tenant.

         The Annual  Fixed Rent and all other  charges  for which  provision  is
         herein  made  shall be paid by  Tenant  to  Landlord,  without  offset,
         deduction or abatement  except as otherwise  specifically  set forth in
         this Lease.

2.6      "Landlord's  Operating  Expenses"  means the cost of  operation  of the
         Building  and the Site which shall  exclude  costs of special  services
         rendered to tenants  (including  Tenant) for which a separate charge is
         made, but shall include,  without limitation,  the following:  premiums
         for  insurance  carried  with  respect  to the  Building  and the  Site
         (including, without limitation,  liability insurance, insurance against
         loss in case of fire or casualty and insurance of monthly  installments
         of fixed rent and any additional rent which may be due under this Lease
         and other leases of space in the Building for not more than twelve (12)
         months in the case of both fixed rent and additional  rent and if there
         be any first mortgage of the Property,  including such insurance as may
         be required by the holder of such first mortgage); compensation and all
         fringe benefits,  workmen's compensation insurance premiums and payroll
         taxes paid to, for or with respect to all persons to the extent engaged
         in the  operating,  maintaining  or cleaning  of the  Building or Site;
         water,  sewer,  electric,  gas, oil and  telephone  charges  (excluding
         utility  charges  separately  chargeable  to tenants for  additional or
         special   services);   cost  of  building  and  cleaning  supplies  and
         equipment;  cost of  maintenance,  cleaning  and  repairs  (other  than
         repairs not  properly  chargeable  against  income or  reimbursed  from
         contractors  under  guarantees);  cost of operating and maintaining the
         food service  facility  described in Section 8.21 below,  less any rent
         actually  received by Landlord  from any  third-party  operator of such
         facility,  but only at such time as  Landlord  shall have been issued a
         certificate of occupancy and use (temporary or permanent) from the City
         of Waltham and  obtained  all other  required  permits and  licenses to
         operate such facility and the facility shall be open for business; cost
         of  snow  removal  and  care of  landscaping;  payments  under  service
         contracts with independent  contractors;  management fees at reasonable
         rates  consistent  with the type of occupancy and the service  rendered
         for comparable or similar building in the Boston-West  Suburban market;
         and all other reasonable and necessary expenses paid in connection with
         the  operation,  cleaning and  maintenance of the Building and the Site
         and  properly  chargeable  against  income,   provided  that  Operating
         Expenses   shall   explicitly   exclude  cost  of  correcting   initial
         construction defects of the Premises and the Site; cost of constructing
         the Premises, the Site or Phase II of the Building;  legal expenses and
         brokerage  commissions  incurred in connection  with the leasing of the
         Building;  any items to the extent that Landlord has actually  received
         reimbursement  from insurance  proceeds or from a third party;  repairs
         necessary  to cause  the  Building  and the Site to comply  with  Legal
         Requirements  (as hereinafter  defined) in effect and applicable to the
         Building and the Site on or before the date of this Lease; and "capital
         expenditures" (as defined in generally accepted  accounting  principles
         used in the real estate industry);  provided,  however,  there shall be
         included (a) depreciation for capital expenditures made by Landlord (i)
         to  reduce  Operating   Expenses  if  Landlord  shall  have  reasonably
         determined that the annual reduction in Operating Expenses shall exceed
         depreciation  therefor or (ii) to comply with applicable  laws,  rules,
         regulations,  requirements,  statutes,  ordinances,  by-laws  and court
         decisions  of all  public  authorities  which  are  enacted  or  become
         applicable   to  the   Building  or  the  Site  after  the  Premises  A
         Commencement Date (herein  collectively  called "Legal  Requirements"),
         plus  (b) in the  case  of  both  (i)  and  (ii)  an  interest  factor,
         reasonably  determined  by Landlord,  as being the  interest  rate then
         charged  for long  term  mortgages  by  institutional  lenders  on like
         properties  within the  locality  in which the  Building is located (it
         being  understood and agreed that  depreciation in the case of both (i)
         and (ii) shall be  determined  by dividing  the  original  cost of such
         capital  expenditure  by the  number  of  years of  useful  life of the
         capital  item   acquired  and  the  useful  life  shall  be  reasonably
         determined by Landlord in accordance with generally accepted accounting
         principles  and practices in effect at the time of  acquisition  of the
         capital item).

         "Operating  Expenses  Allocable  to the  Premises"  shall mean the same
         proportion of Landlord's  Operating  Expenses for and pertaining to the
         Buildings and the Site as the Rentable  Floor Area of Tenant's Space at
         the time of allocation  bears to the Total  Rentable  Floor Area of the
         Buildings.

         "Base Operating Expenses" shall mean Landlord's  Operating Expenses for
         the first  twelve (12)  months of the Lease  Term,  adjusted to reflect
         ninety-five percent (95%) occupancy of the Building.

         "Base  Operating  Expenses  Allocable to the  Premises"  means the same
         proportion  of  Base  Operating  Expenses  for  and  pertaining  to the
         Building  and the Site as the  Rentable  Floor Area of  Tenant's  Space
         bears at the time  allocation to the Total  Rentable  Floor Area of the
         Building.

         If with  respect to any  calendar  year  falling  within  the Term,  or
         fraction of a calendar year falling within the Term at the beginning or
         end thereof,  the  Operating  Expenses  Allocable to the Premises for a
         full  calendar  year exceed Base  Operating  Expenses  Allocable to the
         Premises,  or for any such  fraction  of a  calendar  year  exceed  the
         corresponding  fraction of Base  Operating  Expenses  Allocable  to the
         Premises,  then, Tenant shall pay to Landlord,  as additional rent, the
         amount of such excess.  Such payments shall be made at the times and in
         the manner hereinafter provided in this Section 2.6.

         Not  later  than  ninety  (90) days  after  the end of the  first  full
         calendar year and of each  succeeding  calendar year during the Term or
         fraction thereof at the end of the Term, Landlord shall render Tenant a
         statement in  reasonable  detail and  according  to generally  accepted
         accounting  practices  used in the real  estate  industry  consistently
         applied certified by the chief financial  officer of Landlord,  showing
         for the preceding  calendar year or fraction  thereof,  as the case may
         be, Landlord's  Operating  Expenses and Operating Expenses Allocable to
         the Premises.  Said  statement to be rendered to Tenant shall also show
         for the  preceding  year or  fraction  thereof  as the  case may be the
         amounts of  Operating  Expenses  already  paid by Tenant as  additional
         rent,  and the amount of  operating  expenses  remaining  due from,  or
         overpaid  by,  Tenant  for the  year or  other  period  covered  by the
         statement.  Within  thirty (30) days after the date of delivery of such
         statement,  Tenant shall pay to Landlord the balance of the amounts, if
         any,  required  to be paid  pursuant  to the above  provisions  of this
         Section 2.6 with respect to the preceding year or fraction thereof,  or
         Landlord shall credit any amounts due from it to Tenant pursuant to the
         above  provisions of this Section 2.6 against (i) monthly  installments
         of fixed rent next thereafter coming due or (ii) any sums then due from
         Tenant to  Landlord  under this Lease (or  refund  such  portion of the
         overpayment  as  aforesaid  if the Term has  ended  and  Tenant  has no
         further  obligation  to Landlord).  At the request of Tenant,  Landlord
         shall make available for Tenant's review,  at Tenant's expense and at a
         time and place  reasonably  determined  by  Landlord,  the  records  of
         Landlord used to prepare such  statement.  The Base Operating  Expenses
         Allocable  to  the  Premises  do  not  include  the  $1.00  for  tenant
         electricity to be paid by Tenant at the time of payment of Annual Fixed
         Rent and for which  provision  is made in Section 2.5 hereof,  separate
         provision  being  made in  Section  2.8  below  for  Tenant's  share of
         increases in electricity costs.

         In addition,  Tenant shall make payments monthly on account of Tenant's
         share of  increases  in  Operating  Expenses  anticipated  for the then
         current  year at the time and in the fashion  herein  provided  for the
         payment of fixed rent.  The amount to be paid to  Landlord  shall be an
         amount  reasonably  estimated  annually by Landlord to be sufficient to
         cover,  in the  aggregate,  a sum  equal  to  Tenant's  share  of  such
         increases in operating expenses for each calendar year during the Term.

         Notwithstanding  the  foregoing  provisions,  no decrease in Landlord's
         Operating  Expenses shall result in a reduction of the amount otherwise
         payable by Tenant if and to the extent said decrease is attributable to
         variable costs related solely to vacancies in the Buildings rather than
         to any other causes.

2.7      If with  respect to any full Tax Year or fraction of a Tax Year falling
         within the Term,  Landlord's Tax Expenses Allocable to the Premises (as
         hereinafter  defined)  (a) for a full Tax Year exceed  $3.00 per square
         foot of Rentable Floor Area of Tenant's Space, or for any such fraction
         of a Tax Year  exceed the  corresponding  fraction  of $3.00 per square
         foot of Rentable  Floor Area of Tenant's  Space,  or (b) for a full Tax
         Year are less than  $3.00 per  square  foot of  Rentable  Floor Area of
         Tenant's  Space,  or for any such fraction of a Tax Year  subsequent to
         the date of full assessment are less than the corresponding fraction of
         $3.00 per square foot of Rentable Floor area of Tenant's  Space;  then,
         on or before the thirtieth  (30th) day  following  receipt by Tenant of
         the certified  statement  referred to below in this Section 2.7, in the
         case of (a) Tenant  shall pay to  Landlord,  as  additional  rent,  the
         amount of such  excess,  or in the case of (b),  Landlord  shall credit
         such difference  against (i) monthly  installments of annual Fixed Rent
         next  thereafter  coming  due or (ii) any sums then due from  Tenant to
         Landlord  under this Lease (or refund such  overpayment if the Term has
         ended and Tenant has no further  obligation to Landlord).  In addition,
         payments  by  Tenant on  account  of  increases  in real  estate  taxes
         anticipated for the then current year shall be made monthly at the time
         and in the fashion  herein  provided  for the  payment of Annual  Fixed
         Rent.  The  amount  so  to be  paid  to  Landlord  shall  be an  amount
         reasonably  estimated  by  Landlord in good faith to be  sufficient  to
         provide  Landlord,  in the aggregate,  a sum equal to Tenant's share of
         such  increases,  at least ten (10) days  before  the day on which such
         payments by Landlord  would  become  delinquent.  Not later than ninety
         (90) days after  Landlord's Tax Expenses  Allocable to the Premises are
         determined for the first such Tax Year or fraction thereof and for each
         succeeding Tax Year or fraction thereof during the Term, Landlord shall
         render Tenant a statement in reasonable  detail certified by an officer
         of Landlord showing for the preceding year or fraction thereof,  as the
         case  may be,  real  estate  taxes  on the  Building  and the  Site and
         abatements and refunds of any taxes and  assessments.  Expenditures for
         legal fees and for other expenses  incurred in obtaining the tax refund
         or abatement may be charged against the tax refund or abatement  before
         the adjustment are made for the Tax Year.

         Provided  that and so long as (i) Tenant  shall be  leasing  the entire
         Rentable Floor Area of Phase I of the Building and (ii) there shall not
         have occurred any Event of Default (defined in Section 7.1 hereof),  if
         Tenant  reasonably  believes that Landlord  should attempt to obtain an
         abatement  for any Tax  Year  for  which  Landlord  has  not  filed  an
         abatement application, Tenant may so notify Landlord and Landlord shall
         enter into good faith discussions with Tenant regarding whether such an
         abatement  application should be filed. Any expenditures for legal fees
         or other expenses  incurred in seeking to obtain an abatement  shall be
         paid by Tenant.

         To the extent  that real  estate  taxes  shall be payable to the taxing
         authority in installments with respect to periods less than a Tax Year,
         the foregoing  statement shall be rendered and payments made on account
         of such  installments.  Notwithstanding  the foregoing  provisions,  no
         decrease in Landlord's  Tax Expenses with respect to any Tax Year shall
         result in a reduction of the amount otherwise  payable by Tenant if and
         to the  extent  said  decrease  is  attributable  to  vacancies  in the
         Building.

         Terms used herein are defined as follows:

                  (i)      "Tax Year" means the  twelve-month  period  beginning
                           July  1  each  year   during  the  Term  or,  if  the
                           appropriate  governmental  tax  fiscal  period  shall
                           begin on any date other than July 1, such other date.

                  (ii)     "Landlord's  Tax Expenses  Allocable to the Premises"
                           shall  mean the same  proportion  of  Landlord's  Tax
                           Expenses for and  pertaining  to the Building and the
                           Site as the  Rentable  Floor Area of  Tenant's  Space
                           bears at the time of allocation to the Total Rentable
                           Floor Area of the Building.

                  (iii)    "Landlord's  Tax  Expenses"  with  respect to any Tax
                           Year means the  aggregate  real  estate  taxes on the
                           Building  and Site  with  respect  to that Tax  Year,
                           reduced by any  abatement  receipts  with  respect to
                           that Tax Year.

          (iv) "Real estate  taxes" means all taxes and special  assessments  of
          every kind and nature  assessed by any  governmental  authority on the
          Building or Site which the  Landlord  shall  become  obligated  to pay
          because of or in connection with the ownership,  leasing and operation
          of the Site, the Building and the Property and reasonable  expenses of
          any proceedings for abatement of taxes. The amount of special taxes or
          special  assessments  to be included shall be limited to the amount of
          the  installment  (plus any  interest,  other than  penalty  interest,
          payable thereon) of such special tax or special assessment required to
          be paid  during  the year in  respect  of which  such  taxes are being
          determined.  There  shall be  excluded  from such  taxes  all  income,
          estate, succession, inheritance and transfer taxes; provided, however,
          that if at any time during the Term the  present  system of ad valorem
          taxation  of real  property  shall be  changed  so that in lieu of the
          whole or any part of the ad valorem tax on real  property  there shall
          be assessed on Landlord a capital levy or other tax on the gross rents
          received  with  respect  to the Site or  Building  or  Property,  or a
          federal, state, county,  municipal, or other local income,  franchise,
          excise or similar tax,  assessment,  levy or charge (distinct from any
          now in effect in the  jurisdiction  in which the  Property is located)
          measured by or based,  in whole or in part, upon any such gross rents,
          then any and all of such taxes, assessments, levies or charges, to the
          extent so measured or based, shall be deemed to be included within the
          term "real estate taxes" but only to the extent that the same would be
          payable if the Site and Building were the only property of Landlord.

2.8      If with  respect  to any  calendar  year  falling  within  the  Term or
         fraction of a calendar year falling within the Term at the beginning or
         end thereof, the actual cost to Landlord of furnishing  electricity for
         lighting and outlets to space in the Building occupied by tenants,  but
         expressly  excluding utility charges  separately  chargeable to tenants
         for  additional or special  services or otherwise,  for a full calendar
         year  exceeds  $1.00 per  square  foot of  Rentable  Floor  Area of the
         Building,  or for any such  fraction  of a calendar  year  exceeds  the
         corresponding  fraction of $1.00 per square foot of Rentable Floor Area
         of the Building, then Tenant shall pay to Landlord, as additional rent,
         on or before the thirtieth  (30th) day  following  receipt by Tenant of
         the statement  referred to below in this Section 2.8, its proportionate
         share of the amount of such  excess.  Payments  by Tenant on account of
         Tenant's  share of such excess  (i.e.  the same ratio of such excess as
         the Rentable  Floor Area of Tenant's  Space bears to the Total Rentable
         Floor Area of the  Building)  shall be made  monthly at the time and in
         the fashion  herein  provided for the payment of Annual Fixed Rent. The
         amount so to be paid to  Landlord  shall be an amount from time to time
         reasonably  estimated  by Landlord to be  sufficient  to cover,  in the
         aggregate,  a sum  equal  to  Tenant's  share of such  excess  for each
         calendar year during the Term.

         Not later than  ninety  (90) days  after the end of the first  calendar
         year or fraction  thereof  ending  December  31 and of each  succeeding
         calendar  year  during the Term or  fraction  thereof at the end of the
         Term,  Landlord  shall render Tenant a reasonably  detailed  accounting
         certified by a  representative  of Landlord  showing for the  preceding
         calendar  year, or fraction  thereof,  as the case may be, the costs of
         furnishing  electricity to the Building.  Said statement to be rendered
         to Tenant also shall show for the preceding  year or fraction  thereof,
         as the case may be,  the  amount  already  paid by Tenant on account of
         electricity,  and the amount remaining due from, or overpaid by, Tenant
         for the year or other period  covered by the  statement.  Within thirty
         (30) days after the date of delivery of such  statement,  Tenant  shall
         pay to Landlord the balance of the amounts, if any, required to be paid
         pursuant to the above  provisions  of this  Section 2.8 with respect to
         the preceding  year or fraction  thereof,  or Landlord shall credit any
         amounts due from it to Tenant pursuant to the above  provisions of this
         Section 2.8 against (i) monthly  installments of Annual Fixed Rent next
         thereafter coming due or (ii) any sums then due from Tenant to Landlord
         under  this  Lease  (or  refund  such  portion  of the  overpayment  as
         aforesaid if the Term has ended and Tenant has no further obligation to
         Landlord).

         Notwithstanding  the  foregoing  provisions of this Section 2.8 and any
         other provision of this Lease,  Landlord, at Landlord's option, may, at
         any time and from time to time,  check meter the  electricity  usage in
         all or any portion of the Premises. In addition to amounts which Tenant
         is  required  to pay for  electricity  pursuant  to Section 2.5 and the
         foregoing provisions of this Section 2.8, Landlord shall have the right
         to bill  Tenant  from time to time,  and Tenant  shall make  payment to
         Landlord,  as additional rent, within thirty (30) days after receipt of
         Landlord's  bill, for the cost of  electricity  used in the Premises in
         excess of  electricity  used for a normal  office  use in the  Building
         during  Normal  Building  Operating  Hours,  as  shown  by  such  check
         meter(s).  In calculating  Landlord's bill for such excess electricity,
         Landlord  shall  give  credit  to  Tenant  for  Tenant's  payments  for
         electricity under this Section 2.8.

2.9      Notwithstanding  the provisions of Section 2.6 of this Lease,  Tenant's
         obligation to make payments for  escalations  of Operating  Expenses in
         regard to the Premises shall be to the extent,  and only to the extent,
         that  Operating  Cost  Expenses  Allocable to the  Premises  exceed the
         greater of (i) $6.00 per year per square foot of Rentable Floor Area of
         the  Premises  or (ii) the Base  Operating  Expenses  Allocable  to the
         Premises.

                                   ARTICLE III

                                   CONSTRUCTION

3.0      BASE  BUILDING.  At its sole cost and expense,  Landlord  shall use due
         diligence to perform the base building  construction  of Phase I of the
         Building and at a later date Phase II of the  Building,  together  with
         all common areas and facilities,  substantially  in accordance with the
         Base Building Outline Specifications attached hereto as Exhibit B.

3.1      TENANT'S  PLANS AND  TENANT  PLAN  EXCESS  COSTS.  (A) On or before the
         Tenant Plan Information Date (as defined in Section 1.1),  Tenant shall
         deliver  to  Landlord  the  data  and  information  necessary  for  the
         preparation  of plans  meeting the  requirements  of Exhibit B-1 hereof
         (the Tenant's  Submission").  Landlord shall prepare,  at its sole cost
         and expense, working drawings based upon the Tenant's Submission. On or
         prior to the Tenant  Plan  Delivery  Date,  Landlord  shall  submit the
         working  drawings  (herein  called  "Tenant  Plans")  to Tenant for its
         approval  and  Tenant  shall  approve  Tenant's  Plans on or before the
         Tenant Plan Approval Date. As soon as practicable after the Tenant Plan
         Delivery  Date,  but in no event  later than ten (10) days prior to the
         Tenant Plan Approval Date,  Landlord shall furnish to Tenant in writing
         a statement of all costs of construction work and material necessary to
         complete  construction  in accordance  with Tenant's Plans that are not
         covered  by the  Tenant  Improvements  referred  to in Exhibit C, which
         statement shall be the lowest cost of three (3) competitive  bids where
         appropriate  with  respect  to work not shown on Exhibit C. The cost of
         such work  shall be the  subcontractor  cost of such work plus  fifteen
         percent (15%) for general  conditions,  overhead and fee. To the extent
         such  costs  exceed the cost of the  Tenant  Improvements  set forth in
         Exhibit C, such excess cost are hereinafter referred to as "Tenant Plan
         Excess Costs".  In the statement  submitted with the Tenant Plan Excess
         Costs, Landlord shall identify and notify Tenant of any items contained
         in the Tenant  Plans  which  Landlord  then  reasonably  believes  will
         require  long lead time for the design,  fabrication,  milling or other
         procurement  (the  Long  Lead  Items).  Landlord  will  give to  Tenant
         Landlord's best, good faith estimate of the period(s) of any such delay
         which would be caused by a Long Lead Item.  Landlord  shall  include in
         such notice reasonable  recommendations  to substitute for or eliminate
         the need for such Long Lead Items,  and Tenant shall have the right, at
         Tenant's  option to be exercised by notice given to Landlord within the
         time period for action under the next paragraph of this subsection (A),
         (a) to revise the Tenant  Plans to  eliminate  any such Long Lead Items
         (Long Lead Deleted Items) or (b) to authorize Landlord to construct the
         Tenant  Improvements  in  accordance  with the  approved  Tenant  Plans
         including any such Long Lead Items (Tenant Approved Long Lead Items).

         Tenant  shall  notify  Landlord  in  writing,  within  five (5) days of
         receipt by Tenant of  Landlord's  notification  of Tenant  Plan  Excess
         Costs, of either its approval thereof and its authorization to Landlord
         to  proceed  with  construction  in  accordance  with  Tenant's  Plans,
         (including  all Tenant  Approved  Long Lead Items) or of any changes in
         Tenant's Plans (including all Long Lead Deleted Items). In the event of
         any such changes, Landlord shall, as soon as practicable after Landlord
         obtains price  quotations for any changes in Tenant's  Plans,  quote to
         Tenant all  changes in Tenant  Plan Excess  Costs  resulting  from said
         changes.  Tenant  shall,  within three (3) days  following  the date of
         receipt from  Landlord of Landlord's  revised  quotation of Tenant Plan
         Excess  Costs  give  authorization  to  Landlord  to  proceed  with the
         construction in accordance  with Tenant's Plans as modified  (including
         all Tenant Approved Long Lead Items).

         (B) To the  extent,  if any,  that  Tenant  Plan  Excess  Costs  exceed
         Tenant's  special  allowance  as provided  for in Section  3.1.1 below,
         Tenant shall reimburse  Landlord,  as additional  rent, for Tenant Plan
         Excess Costs as follows: during said construction work Landlord may, on
         or about the first day of each  month,  deliver  to Tenant a  statement
         showing the  proportion  of Tenant Plan Excess  Costs  allocable to the
         previous month's work.  Tenant shall pay to Landlord as additional rent
         eighty-five  percent  (85%)  of  the  amount  specified  in  each  such
         statement  within ten (10) days after receipt of such statement.  Final
         payment  by Tenant to  Landlord  shall be made ten (10) days  after the
         work is  completed  and  accepted  by  Tenant as being  constructed  in
         accordance  with the  requirements  of this  Lease.  Tenant  shall,  if
         requested by Landlord,  execute a work letter  confirming the amount of
         Tenant Plan Excess Costs prior to the time  Landlord  shall be required
         to commence work.

3.1.1    Landlord  shall  provide to Tenant a special  allowance  of Two Hundred
         seventy-five  Thousand Dollars  ($275,000.00) to be used and applied by
         Tenant on account of any Tenant Plan Excess Costs.  Any unused  portion
         of said allowance may be, at Tenant's option,  used to pay for Tenant's
         move related expenses,  including the cost of the physical move, custom
         furnishing and decor items, telephone and data wiring, furniture, work-
         stations and appliances, or credited against Annual Fixed Rent due from
         Tenant after the applicable Commencement Date.

3.1.2     In the event that Tenant shall request any changes to the Tenant Plans
          (a Change Order),  Landlord shall notify Tenant in writing of the cost
          of such Change Order and Landlord's  reasonable  determination  of the
          delay,  if any, in the completion of  construction  as contemplated by
          this Article III caused by the Change Order (the Change Order  Delay).
          The Phase I Outside  Completion Date shall be  automatically  extended
          for a period of time equal to the Change  Order  Delay.  In  addition,
          notwithstanding  any term or provision of this Lease to the  contrary,
          if Tenant shall request a Change Order, the Commencement  Date of that
          portion of the Premises to which the Change Order relates shall be the
          date  reasonably  determined  by  Landlord  as being  the  appropriate
          Commencement Date if Tenant had not requested such Change Order.

         The cost of any Change  Order  shall be based on the actual cost of all
         labor, materials,  plans,  engineering,  permits and other costs of the
         work  described  in the Change  Order plus  fifteen  percent  (15%) for
         general conditions,  overhead and fees. All Change Order costs shall be
         paid by Tenant to Landlord as  additional  rent (but only to the extent
         that the Change  Order  actually  increases  the cost of the work being
         performed by Landlord hereunder) within ten (10) days after delivery by
         Landlord of an invoice with respect to such costs;  provided,  however,
         that if Tenant notes  defective or  uncompleted  Change Order work,  it
         shall  promptly  notify  Landlord  of the same and shall be entitled to
         retain  an  amount  equal to one  hundred  ten  percent  (110%)  of the
         estimated  cost to repair any defect or complete any  unfinished  work.
         Landlord shall promptly arrange to have the  deficiencies  remedied and
         any unfinished work completed to Tenant's reasonable  satisfaction,  at
         which point payment of the retention will be made by Tenant.

3.2.1     Landlord agrees to use due diligence to complete the work described in
          Section  3.1 with  respect  to the first,  second and third  floors of
          Phase I of the  Building  on or before the  Initial  Phase I Scheduled
          Completion Date and with respect to the fourth floor of Phase I of the
          Building  on or before the Fourth  Floor  Scheduled  Completion  Date.
          Landlord shall not be required to install any  improvements  which are
          not in conformity with the plans and  specifications  for the Building
          or which are not approved by Landlord's  architect.  In case of delays
          due to governmental  regulation,  unusual  scarcity of or inability to
          obtain  materials,  inability  to obtain  labor as a result of strike,
          casualty  or  other  causes  reasonably   beyond  Landlord's   control
          (collectively,  "Landlord's  Force  Majeure"),  the  Initial  Phase  I
          Scheduled  Completion Date and the Fourth Floor  Scheduled  Completion
          Date shall be extended,  respectively,  for the period of such delays.
          Each of Premises A,  Premises  B,  Premises C and  Premises D shall be
          "Substantially  Complete"  on the  date  on  which  Landlord  (a)  has
          obtained a certificate  from its architect  that the work described in
          Section 3.1, together with common facilities for access and service to
          the  applicable  portion  of  the  Premises,  has  been  substantially
          completed except for (i) items of work and adjustment of equipment and
          fixtures  which  can  be  completed  within  twenty  (20)  days  after
          occupancy thereof has been taken without causing adverse  interference
          with Tenant's use of the Premises (i.e.  so-called "punch list" items)
          (Landlord  hereby  agrees  that it will  use  good  faith  efforts  to
          minimize  interference with Tenant's use as aforesaid  consistent with
          the fact that certain items of work remain to be  completed)  and (ii)
          Tenant  Approved  Long Lead  Items,  (b)  receives  a  certificate  of
          occupancy,  temporary or permanent,  issued by applicable governmental
          authority  permitting  occupancy  of  the  applicable  portion  of the
          Premises by Tenant and (c) has provided  Tenant with parking spaces in
          the ratio of 3.8 spaces per 1,000  square feet of Rentable  Floor Area
          of Tenant's  Space.  Landlord  shall use due  diligence to complete as
          soon as  conditions  practically  permit the punch  list items  within
          twenty  (20) days after  occupancy  of the  Premises by Tenant and the
          Tenant Approved Long Lead Items, and Tenant shall not use the Premises
          in such manner as will increase the cost of completion. Landlord shall
          deliver the Premises in broom clean condition, free of debris and with
          all utilities being readily  available for use by Tenant. In addition,
          Landlord  shall use due diligence to complete its work on the exterior
          of the Building and the  landscaping  of the Site prior to the Initial
          Phase I Scheduled  Completion Date,  consistent with the fact that the
          Building is being constructed in two phases.

3.2.2     Except as  expressly  provided  herein,  the  failure of  Landlord  to
          Substantially Complete Premises A, Premises B, Premises C and Premises
          D on or prior to a  particular  date shall not  entitle  Tenant to any
          abatement or reduction of Annual Fixed Rent or additional  rent or the
          right to withhold or set off against  Annual Fixed Rent or  additional
          rent  nor  give  rise  to  any   right  to   terminate   this   Lease.
          Notwithstanding the foregoing, in the event that (i) the first, second
          and third  floors  of Phase I of the  Building  are not  Substantially
          Complete  (excluding  punch list items and Tenant  Approved  Long Lead
          Items)  by July 1,  1999 and (ii) the  fourth  floor of Phase I of the
          Building is not Substantially Complete (excluding punch list items and
          Tenant  Approved  Long Lead Items) by September 1, 1999 (both of which
          such dates shall be extended automatically for such periods of time as
          Landlord is prevented from  proceeding  with or completing the same by
          reason of (a)  Landlord's  Force  Majeure (such periods of time not to
          exceed  sixty  (60) days in the  aggregate  for any  Landlord's  Force
          Majeure) or (b) any Tenant Delays (as defined below)), Tenant shall be
          entitled to an  abatement  of payments on account of Annual Fixed Rent
          for each day after July 1, 1999 (with respect to those portions of the
          Premises  located on the first,  second and third floors of Phase I of
          the Building) and September 1, 1999 (with respect to those portions of
          the Premises  located on the fourth floor of Phase I of the  Building)
          until the date on which  Landlord  shall  Substantially  Complete  the
          respective portions of Phase I of the Building, as appropriate. Except
          as provided in the next paragraph of this Section  3.2.2,  such rental
          abatement  shall be Tenant's  sole and  exclusive  remedy at law or in
          equity or otherwise for Landlord's  failure to Substantially  Complete
          the  appropriate  portions of Phase I of the Building  within the time
          periods specified above.  Notwithstanding the foregoing,  Tenant shall
          not have any right to an abatement  with respect to any portion of the
          Premises  with respect to which Tenant  shall not have  delivered  the
          notice  described in the definition of the  applicable  portion of the
          Premises in Section 1.1 above at least  thirty (30) days prior to July
          1, 1999 (with respect to those portions of the Premises located on the
          first,  second  and  third  floors  of  Phase  I of the  Building)  or
          September  1, 1999 (with  respect to those  portions  of the  Premises
          located on the fourth floor of Phase I of the Building).

         In addition to and not in limitation of the  foregoing,  if Premises A,
         Premises B,  Premises C and Premises D are not  Substantially  Complete
         (excluding  punch list items and Tenant Approved Long Lead Items) on or
         before  the  Phase I  Outside  Completion  Date  (which  date  shall be
         extended  automatically  for  such  periods  of  time  as  Landlord  is
         prevented from  proceeding with or completing the same by reason of (a)
         Landlord's Force Majeure (such periods of time not to exceed sixty (60)
         days in the aggregate for any Landlord's  Force Majeure) or (b) any act
         or  failure  to  act  of  Tenant  which   interferes   with  Landlord's
         construction  of the  Premises  (collectively  with  any  Change  Order
         Delays,  such acts being  hereinafter  referred  to as Tenant  Delays),
         including,  without  limitation,  any delay by Tenant in delivering the
         Tenant's  Submission,  approving  the Tenant's  Plans or approving  any
         Tenant Plan Excess Costs,  within the time periods set forth in Section
         3.1 (without  limiting  Landlord's  other  rights on account  thereof),
         until Landlord shall so Substantially  Complete Premises A, Premises B,
         Premises C and Premises D as aforesaid,  Tenant shall have the right to
         terminate this Lease by giving notice to Landlord of Tenant's desire so
         to do;  and,  upon the  giving of such  notice,  the Term of this Lease
         shall cease one hundred  eighty (180) days from the  effective  date of
         such notice and come to an end without further  liability or obligation
         on the part of either  party  unless,  within  thirty  (30) days  after
         Landlord's receipt of Tenant's notice Landlord substantially  completes
         the work to be performed by Landlord  under Section 3.1 with respect to
         Premises  A,  Premises B,  Premises C and  Premises D (except for punch
         list  items and  Tenant  Approved  Long Lead  Items)  and such right of
         termination  shall be Tenant's sole and  exclusive  remedy at law or in
         equity or otherwise  for  Landlord's  failure so to complete  such work
         within  such  time.  In the event of any  termination  of this Lease by
         Tenant as aforesaid, Tenant shall continue to pay Annual Fixed Rent and
         all other  charges  relating to any portion of Premises A,  Premises B,
         Premises C and  Premises D occupied  by Tenant  prior to the  effective
         date of  termination  through such effective  date,  shall deliver such
         previously  occupied premises to Landlord in the condition  required by
         this Lease and shall vacate such premises as of the  effective  date of
         termination.  Notwithstanding the foregoing,  Tenant shall not have any
         right of  termination  with respect to any portion of the Premises with
         respect to which Tenant shall not have  delivered the notice  described
         in the definition of the applicable  portion of the Premises in Section
         1.1  above at least  thirty  (30)  days  prior to the  Phase I  Outside
         Completion Date.

         Tenant  agrees  that no delay to the  extent  caused  by it,  or anyone
         employed  by it,  in  performing  work  to  prepare  the  Premises  for
         occupancy  (including,  without  limitation,  the  work  in  installing
         telephones and other  communications  equipment or systems) shall delay
         commencement of the Term or the obligation to pay rent.

3.3      This  Section  3.3 shall  apply  before and during the Term.  Except as
         expressly   provided  in  this  Section  3.3,  Tenant  shall  not  make
         alterations  and additions to Tenant's space except in accordance  with
         plans and  specifications  therefor first  approved by Landlord,  which
         approval  shall not be  unreasonably  withheld.  Landlord  shall not be
         deemed  unreasonable  for  withholding  approval of any  alterations or
         additions  which (a) involve or might affect any structural or exterior
         element of the Building,  any area or element  outside of the Premises,
         or any  facility  serving  any  area  of the  Building  outside  of the
         Premises,  or (b) will delay completion of the Premises or Building, or
         (c) will  require  unusual  expense to readapt  the  Premises to normal
         office use on Lease termination or increase the cost of construction or
         of insurance or taxes on the Building or of the services  called for by
         Section 4.1 unless Tenant first gives assurance  acceptable to Landlord
         for payment of such increased cost and that such  readaptation  will be
         made  prior  to such  termination  without  expense  to  Landlord.  All
         alterations  and  additions  shall  be  part  of the  Building  (except
         Tenant's  movable  furnishings,  trade  fixtures  and office  equipment
         unless and until Landlord  shall specify the same for removal  pursuant
         to  Section  5.2.  All  of  Tenant's   alterations  and  additions  and
         installation  of furnishings  shall be coordinated  with any work being
         performed  by Landlord  and in such  manner as to  maintain  harmonious
         labor  relations  and not to damage the  Buildings or Site or interfere
         with construction or operation of the Buildings and other  improvements
         to the Site and,  except  for  installation  of  furnishings,  shall be
         performed by Landlord's general contractor or by contractors or workmen
         first  approved  by  Landlord.  Except for work by  Landlord's  general
         contractor,  Tenant,  before  its work is  started,  shall  secure  all
         licenses  and  permits  necessary  therefor;   deliver  to  Landlord  a
         statement of the names of all its  contractors and  subcontractors  and
         the  estimated  cost of all labor and  material to be furnished by them
         and security satisfactory to Landlord protecting Landlord against liens
         arising out of the  furnishing  of such labor and  material;  and cause
         each contractor to carry workmen's  compensation insurance in statutory
         amounts covering all the contractor's and subcontractor's employees and
         commercial  general  liability   insurance  or  comprehensive   general
         liability   insurance  with  a  broad  form   comprehensive   liability
         endorsement with such limits as Landlord may reasonably require, but in
         no event less than  $2,000,000.00  combined single limit per occurrence
         on a per location  basis (all such insurance to be written in companies
         approved by Landlord and naming and insuring  Landlord as an additional
         insured and insuring Tenant as well as the contractors), and to deliver
         to Landlord  certificates of all such  insurance.  Tenant agrees to pay
         promptly  when due the entire cost of any work done on the  Premises by
         Tenant, its agents,  employees, or independent contractors,  and not to
         cause or permit any liens for labor or materials performed or furnished
         in  connection  therewith  to attach to the Premises or the Building or
         the Site and  immediately  to  discharge  any such  liens  which may so
         attach.  Tenant shall pay, as additional  rent, 100% of any real estate
         taxes on the Complex which shall, at any time after commencement of the
         Term,  to  the  extent  resulting  from  any  alteration,  addition  or
         improvement to the Premises made by Tenant.

         Notwithstanding the provisions of the immediately  preceding paragraph,
         Tenant shall have the right,  without  obtaining  the prior  consent of
         Landlord, to make non-structural alterations, additions or improvements
         to the Premises where:

                  (i)      the same are within the interior of the Premises 
                           within the Building, and do not affect the exterior 
                           of the Premises and the Building;

                  (ii)     the  same do not  affect  the  roof,  any  structural
                           element of the Building, the mechanical,  electrical,
                           plumbing, heating, ventilating,  air-conditioning and
                           fire protection systems of the Building;

                  (iii)    the   cost  of   said   alterations,   additions   or
                           improvements  made by Tenant on any  single  occasion
                           shall not exceed $15,000.00;

                  (iv)     the cumulative sum of the costs of said  alterations,
                           additions or  improvements  made by Tenant during any
                           twelve (12) month  period of the Lease Term shall not
                           exceed $30,000.00 in cost;

                  (v)      Tenant shall comply with the provisions of this Lease
                           and if such work  increases  the cost of insurance or
                           taxes or of  services,  Tenant shall pay for any such
                           increase in cost;

         provided, however, that Tenant shall, within thirty (30) days after the
         making of such  changes,  send to  Landlord  plans  and  specifications
         describing the same in reasonable  detail.  Tenant shall be required to
         remove any  alteration,  addition or improvement  for which  Landlord's
         consent is not  required as set forth above and to restore the Premises
         to its condition prior to such  alteration,  addition or improvement at
         the  expiration or earlier  termination of the Lease Term to the extent
         that any such  alteration,  addition  or  improvement  would  cause the
         Premises,  the Building or the Site not to comply with applicable laws,
         regulations or codes.

3.4      All  construction  work  required  or  permitted  by this  Lease  to be
         performed  by either  Landlord  or  Tenant  shall be done in a good and
         workmanlike  manner and in compliance  with all applicable laws and all
         lawful ordinances, regulations and orders of governmental authority and
         insurers of the Building.  Each party may inspect the work of the other
         at reasonable times and shall promptly give notice of observed defects.
         Each party  authorizes the other to rely in connection  with design and
         construction  upon approval and other actions on the party's  behalf by
         any Construction  Representative of the party named in Article I or any
         person  hereafter  designated in  substitution or addition by notice to
         the party  relying.  Except to the  extent to which  Tenant  shall have
         given  Landlord  notice of respects in which Landlord has not performed
         Landlord's construction  obligations under this Article III (including,
         without   limitation,   work  on  the  heating,   ventilating  and  air
         conditioning  systems servicing the Premises) not later than the end of
         the  twelfth  (12th)  full  calendar  month  following  the  Premises A
         Commencement Date, Tenant shall be deemed conclusively to have approved
         Landlord's  construction  and shall  have no claim  that  Landlord  has
         failed to perform any of Landlord's obligations under this Article III.
         Landlord agrees to correct or repair,  at its expense,  items which are
         then  incomplete  and as to which  Tenant  shall have  given  notice to
         Landlord, as aforesaid.


                                   ARTICLE IV

                   LANDLORD'S COVENANTS; INTERRUPTIONS AND DELAYS

4.1      Landlord covenants:

4.1.1    To furnish  services,  utilities,  facilities and supplies set forth in
         Exhibit  D  equal  to  those  customarily   provided  by  landlords  in
         first-class office buildings in the Boston West Suburban Market subject
         to escalation reimbursement in accordance with Section 2.6.

4.1.2    To  furnish,  at  Tenant's  expense,   reasonable  additional  Building
         operation services which are usual and customary in similar first-class
         office  buildings in the Boston West  Suburban  Market upon  reasonable
         advance  request of Tenant at reasonable and equitable  rates from time
         to time established by Landlord.

4.1.3    Subject  to the  escalation  provisions  of  Section  2.6 and except as
         otherwise  provided in Article VI, (i) to make such repairs  (exclusive
         of  Tenant's  responsibilities  under  this  Lease) to the  electrical,
         plumbing,  mechanical,  fire protection,  heating,  ventilating and air
         conditioning systems of the Building, roof, exterior walls, floor slabs
         and common  areas and  facilities  as may be  necessary to keep them in
         serviceable  condition and (ii) to maintain the Building  (exclusive of
         Tenant's  responsibilities  under this Lease) in a first  class  manner
         comparable to the maintenance of similar  first-class office properties
         in the Boston West Suburban Market.

4.1.4    To provide and install, at Landlord's  expense,  letters or numerals on
         the entrance doors to the Premises to identify  Tenant's  official name
         and Building  address;  all such  letters and numerals  shall be in the
         building  standard graphics and no others shall be used or permitted on
         the Premises. In addition,  Landlord shall, at its own expense, provide
         an interior lobby directory in the Building identifying the Building as
         containing  space leased by Tenant (it being understood and agreed that
         Landlord shall have the right to list the names of other tenants of the
         Building in such lobby directory at any time in its sole discretion).

4.2      Landlord  shall  not be  liable  to  Tenant  for  any  compensation  or
         reduction of rent by reason of  inconvenience  or annoyance or for loss
         of  business  arising  from the  necessity  of  Landlord  or its agents
         entering  the Premises at  reasonable  times after three (3) days prior
         notice to Tenant  (except in the event of an emergency)  for any of the
         purposes in this Lease authorized, or for repairing the Premises or any
         portion of the  Building  however  the  necessity  may occur.  Landlord
         shall,   however,   use  good  faith   efforts  to  minimize   material
         interference with Tenant's use of the Premises consistent with the fact
         that  Landlord is  exercising  the  aforesaid  right of entry.  In case
         Landlord is prevented  or delayed from making any repairs,  alterations
         or  improvements,  or furnishing  any services or performing  any other
         covenant  or duty to be  performed  on  Landlord's  part,  by reason of
         Landlord's  Force  Majeure,  Landlord  shall  not be  liable  to Tenant
         therefor,  nor, except as expressly  otherwise  provided in this Lease,
         shall  Tenant be  entitled to any  abatement  or  reduction  of rent by
         reason thereof. In the event that the electrical, heating, ventilating,
         air conditioning,  or all elevator service within the Premises shall be
         shut down for more than five (5) full and  consecutive  business  days,
         but only as a result of causes which are covered by Landlord's  loss of
         rentals  insurance,  then,  Tenant shall be entitled to an abatement of
         Annual Fixed Rent equal to the Insurance Amount (hereinafter  defined).
         The Insurance  Amount shall be an amount equal to the payment  actually
         received  by  Landlord  (but only  such  portions  allocable  to and on
         account of the Premises) from the insurance carrier providing such loss
         of rents insurance less the amount of any deductible  contained in such
         loss of  rents  insurance  coverage.  Notwithstanding  anything  herein
         contained to the contrary, in no event shall any of the events referred
         to in this Section 4.2 give rise to a claim in Tenant's favor that such
         failure constitutes actual or constructive,  total or partial, eviction
         from the Premises.

         Landlord reserves the right to stop any service or utility system, when
         necessary  by reason  of  accident  or  emergency,  or until  necessary
         repairs have been completed;  provided,  however, that in each instance
         of stoppage,  Landlord shall exercise reasonable diligence to eliminate
         the  cause  thereof  and  to  resume  service  as  soon  as  reasonably
         practicable.  Except in case of emergency  repairs,  Landlord will give
         Tenant reasonable advance notice of any contemplated  stoppage and will
         use reasonable efforts to avoid unnecessary  inconvenience to Tenant by
         reason thereof.

4.3      Landlord  represents  to Tenant that as of the Date of this  Lease,  to
         Landlord's actual knowledge and belief,  the Building,  the Premises or
         the Complex do not violate any environmental laws, rules or regulations
         applicable as of the Date of this Lease.

4.4      Subject to the  provisions  of Section 2.6 hereof,  Landlord  agrees to
         maintain  during the term of this Lease  commercial  general  liability
         insurance  insuring  Landlord with respect to the Building in an amount
         not less than $5,000,000.00 combined single limit and insurance against
         loss or damage to the  Building  covered by "all risk" type  insurance,
         which insurance shall be in an amount at least equal to the replacement
         cost  of the  Building.  Any  and  all of  such  insurance  (i)  may be
         maintained  under a blanket policy affecting other premises of Landlord
         and/or its affiliated  business  organizations  and (ii) may be written
         with such  deductibles  as  reasonably  determined  by Landlord in good
         faith.  Nothing  herein shall limit  Landlord's  right to maintain such
         other insurance as provided in the aforesaid Section 2.6.

4.5      Subject to the  limitations of Section 8.4 below, to the maximum extent
         this  agreement  is  effective  according  to law and to the extent not
         resulting from any act,  omission,  fault,  negligence or misconduct of
         Tenant or its contractors,  agents,  licensees,  invitees or employees,
         Landlord  agrees to indemnify and save harmless Tenant from and against
         any  claim  arising  from an  injury  to any  person  occurring  in the
         Building  or on the  Site  after  the  date  that  possession  is first
         delivered to Tenant and until the expiration or earlier  termination of
         the Lease  Term,  to the  extent  that  such  injury  results  from the
         negligence or willful  misconduct of Landlord or Landlord's  employees;
         provided,  however,  that in no event  shall  the  aforesaid  indemnity
         render  Landlord  responsible  or  liable  for any  loss or  damage  to
         fixtures or personal property of Tenant (except to the extent that such
         loss or damage to  fixtures  or  personal  property  is not  covered by
         insurance  either  maintained by Tenant or required to be maintained by
         Tenant under this Lease) and  Landlord  shall in no event be liable for
         any special,  indirect or consequential  damages;  and provided further
         that the  provisions of this Section shall not be applicable (i) to the
         holder of any  mortgage  now or  hereafter  on the Building or the Site
         (whether or not such holder  shall be a mortgagee in  possession  of or
         shall have  exercised  any rights under a  conditional,  collateral  or
         other  assignment of leases and/or rents respecting the Building and/or
         the  Site) or (ii) any  person  acquiring  title  as a  result  of,  or
         subsequent  to,  a  foreclosure,  except  to the  extent  of  liability
         insurance maintained by the foregoing.

4.6      Provided  that,  on the  condition  that and only so long as (i)  there
         shall not have  occurred  an Event of  Default  (as  defined in Section
         7.1(a)  hereof),  (ii) this Lease  shall be in full  force and  effect,
         (iii)  Tenant  shall be in  actual  occupancy  of the  Premises  and be
         engaged in the  business of  clinical  trials  management,  statistical
         analysis   of   clinical   research   and   product   development   for
         pharmaceutical  and diagnostic  products and (iv) Tenant shall not have
         assigned this Lease or sublet more than forty-five percent (45%) of the
         Rentable  Floor Area of the  Premises  then leased by Tenant,  Landlord
         shall not hereafter  directly  enter into a lease of other space in the
         Building with any of the "Named  Companies" (as  hereinafter  defined).
         For the purposes of this Section  4.6, the "Named  Companies"  shall be
         the three (3) largest (based on market capitalization), publicly-traded
         competitors of Tenant  engaged in the business  described in subsection
         (iii)  above,  as may from time to time be  designated  by Tenant  upon
         reasonable prior notice to Landlord. Notwithstanding anything contained
         herein to the  contrary,  the  provisions of this Section 4.6 shall not
         apply to a company  designated by Tenant as one of the Named  Companies
         after such time as Landlord  shall have  submitted a lease proposal to,
         or entered into a lease with,  such company for space in the  Building.
         Tenant hereby designates Quintiles Transnational Corporation,  Covance,
         Inc.  and  Pharmaceutical  Product  Development,   Inc.  as  the  Named
         Companies as of the date of this Lease.


                                 ARTICLE V

                             TENANT'S COVENANTS

         Tenant  covenants  during  the  term and such  further  time as  Tenant
occupies any part of the Premises:

5.1      To pay when due all fixed rent and additional  rent and all charges for
         utility services rendered to the Premises (except as otherwise provided
         in Exhibit  D) and,  further,  as  additional  rent,  all  charges  for
         additional services rendered pursuant to Section 4.1.2.

5.2      Except as otherwise  provided in Article VI and Section 4.1.3,  to keep
         the Premises in good order,  repair and condition,  reasonable wear and
         tear only excepted,  and all glass in windows (except glass in exterior
         walls unless the damage thereto is attributable to Tenant's  negligence
         or misuse) and doors of the Premises  whole and in good  condition with
         glass of the same type and quality as that injured or broken, damage by
         fire,  other  casualty or taking under the power of eminent domain only
         excepted,  and at the expiration or termination of this Lease peaceably
         to yield up the Premises all construction,  work, improvements, and all
         alterations and additions thereto in good order,  repair and condition,
         reasonable  wear and tear only  excepted,  first removing all goods and
         effects of Tenant and, to the extent specified by Landlord by notice to
         Tenant  given  at  least  ten  (10)  days  before  such  expiration  or
         termination,  all  alterations  and  additions  made by Tenant  and all
         partitions,  and  repairing  any  damage  caused  by such  removal  and
         restoring  the Premises  and leaving them clean and neat.  Tenant shall
         not permit or commit any waste, and Tenant shall be responsible for the
         cost of  repairs  which  may be made  necessary  by reason of damage to
         common  areas in the  Building  or to the Site to the extent  caused by
         Tenant,  Tenant's  independent   contractors,   Tenant's  employees  or
         Tenant's invitees.

5.3      Continuously  from the  commencement of the Term, to use and occupy the
         Premises for the Permitted  Uses only,  and not to injure or deface the
         Premises,  the Building,  the Site or any other part of the Complex nor
         to permit in the  Premises  or on the Site any  auction  sale,  vending
         machine,  or  inflammable  fluids or  chemicals,  or  nuisance,  or the
         emission  from the Premises of any  reasonably  objectionable  noise or
         odor,  nor to use or devote the  Premises  or any part  thereof for any
         purpose other than the Permitted Uses, nor for any use thereof which is
         inconsistent  with  maintaining  the  Building as a first class  office
         building in the quality of its maintenance, use and occupancy, or which
         is  improper,  offensive,  contrary  to law or  ordinance  or liable to
         render  necessary any alteration or addition to the Building.  Further,
         Tenant shall not nor shall  Tenant  permit its  employees,  invitees or
         contractors  to engage in any  activity  which may  produce a hazardous
         material,  waste or substance,  or keep or maintain any substance which
         is or may  hereafter  be  classified  a  hazardous  material,  waste or
         substance under federal,  state or local laws,  rules and  regulations,
         including,  without  limitation,  42 U.S.C.  Section  6901 et seq.,  42
         U.S.C.  Section 9601 et seq., 42 U.S.C. Section 2601 et seq., 49 U.S.C.
         Section 1802 et seq. and  Massachusetts  General Laws,  Chapter 21E and
         the rules and regulations  promulgated  under any of the foregoing,  as
         such laws,  rules and regulations may be amended from time to time and,
         further,  Tenant shall comply and shall cause its employees,  invitees,
         agents and contractors to comply with each of the foregoing.

5.4      Not to obstruct in any manner any  portion of the  Building  not hereby
         leased or any  portion  thereof or of the Site used by Tenant in common
         with  others;  not  without  prior  consent of  Landlord  to permit the
         painting or placing of any signs, curtains,  blinds,  shades,  awnings,
         aerials or flagpoles,  or the like,  visible from outside the Premises;
         and  to  comply  with  all  reasonable  Rules  and  Regulations  now or
         hereafter made by Landlord (which such Rules and Regulations  shall not
         have an adverse effect on Tenant's use and occupancy of the Premises as
         contemplated by this Lease and shall be applied in a non-discriminatory
         manner to all  occupants  of the  Building),  of which  Tenant has been
         given reasonable prior notice, for the care and use of the Building and
         Site and their facilities and approaches;  Landlord shall not be liable
         to Tenant for the failure of other occupants of the Building to conform
         to such Rules and Regulations. Landlord shall use good faith efforts to
         enforce its Rules and Regulations against  non-conforming  occupants of
         the  Building,  provided  that the failure of Landlord to enforce  such
         Rules and  Regulations  shall not  constitute  a  default  of  Landlord
         hereunder.

5.5      To keep the Premises  equipped with all safety  appliances  required by
         any  public  authority  because  of any use made by Tenant  other  than
         normal  office use, and to procure all licenses and permits so required
         because of such use and, if requested  by  Landlord,  to do any work so
         required  because of such use, it being  understood  that the foregoing
         provisions  shall  not be  construed  to  broaden  in any way  Tenant's
         Permitted Uses.

5.6      Except as otherwise  expressly  provided  herein,  Tenant covenants and
         agrees  that it shall not  assign,  mortgage,  pledge,  hypothecate  or
         otherwise transfer this Lease and/or Tenant's interest in this Lease or
         sublet  (which term,  without  limitation,  shall  include  granting of
         concessions,  licenses  or the  like)  the  whole  or any  part  of the
         Premises. Any assignment, mortgage, pledge, hypothecation,  transfer or
         subletting not expressly permitted in or consented to by Landlord under
         Sections 5.6.1-5.6.6 shall be void, ab initio; shall be of no force and
         effect; and shall confer no rights on or in favor of third parties.  In
         addition, Landlord shall be entitled to seek specific performance of or
         other equitable relief with respect to the provisions hereof.

5.6.1    Notwithstanding  the provisions of Section 5.6 above and the provisions
         of Section 5.6.3 and 5.6.4 below, Tenant shall have the right to assign
         this  Lease or to sublet  the  Premises  (in whole or in part)  without
         Landlord's consent to any parent or subsidiary corporation of Tenant or
         to any corporation  into which Tenant may be converted or with which it
         may merge, or to any affiliated  entity  controlling,  controlled by or
         under common  control with Tenant.  Any such  assignment  or subletting
         shall be  subject  to the  provisions  of the first two  paragraphs  of
         Section 5.6.2 and the provisions of Section 5.6.5 below.

5.6.2     Notwithstanding  the  provisions  of Section  5.6 above,  in the event
          Tenant desires to assign this Lease or to sublet the Premises,  Tenant
          shall  notify  Landlord  thereof in  writing,  and said  notice  shall
          specify the  provisions  of the  proposed  assignment  or  subletting,
          including  (a) the  name  and  address  of the  proposed  assignee  or
          subtenant,  (b)  except  in  the  case  of a  proposed  assignment  or
          subletting  pursuant  to Section  5.6.1,  such  information  as to the
          proposed  assignee's or proposed  subtenant's  net worth and financial
          capability  and standing as may reasonably be required for Landlord to
          make the  determination  referred to in Section 5.6.3 below (provided,
          however, that Landlord shall hold such information confidential having
          the right to release same to its officers, accountants,  attorneys and
          mortgage  lenders on a confidential  basis),  (c) all of the terms and
          provisions  upon which the proposed  assignment or subletting is to be
          made, (d) in the case of a proposed  assignment or subletting pursuant
          to Section 5.6.1, such information as may be necessary for Landlord to
          determine  that such proposed  assignment or subletting  complies with
          the  requirements  of Section  5.6.1,  and (e) except in the case of a
          proposed assignment or subletting pursuant to Section 5.6.1, all other
          information necessary to make the determination referred to in Section
          5.6.3 below.

         If Landlord  shall consent to the proposed  assignment or subletting or
         in the case of a proposed  assignment of subletting pursuant to Section
         5.6.1 Landlord shall confirm that the proposed assignment or subletting
         complies with the  requirements  of Section 5.6.1,  as the case may be,
         then, in such event,  Tenant may thereafter sublease or assign pursuant
         to Tenant's notice, as given hereunder; provided, however, that if such
         assignment or sublease  shall not be executed and delivered to Landlord
         within  one  hundred-twenty  (120)  days  after the date of  Landlord's
         consent,  the consent shall be deemed null and void and the  provisions
         of Sections 5.6.2-5.6.5 shall be applicable.

5.6.3     Notwithstanding  the  provisions of Section 5.6 above,  but subject to
          the  provisions of this Section  5.6.3 and the  provisions of Sections
          5.6.4 and 5.6.5 for a period of one  hundred  twenty  (120) days after
          the receipt of Tenant's  notice  referred to in Section 5.6.2,  Tenant
          shall have the right to assign  this Lease or sublet the  Premises  in
          accordance  with  Tenant's  notice to  Landlord  given as  provided in
          Section 5.6.2 provided that, in each instance (except for transfers in
          accordance with Section 5.6.1 above), Tenant first obtains the express
          prior  written  consent  of  Landlord,  which  consent  shall  not  be
          unreasonably  withheld or delayed.  Landlord shall not be deemed to be
          unreasonably  withholding its consent to such a proposed assignment or
          subleasing if:

                  (a)      the operations of the proposed  assignee or subtenant
                           are not  consistent  with  the  operation  of a first
                           class  office  building  (by way of example  Landlord
                           shall not be deemed  to be  unreasonably  withholding
                           its consent to an  assignment  or  subleasing  to any
                           governmental agency), or

                  (b)      the proposed  assignee or subtenant  does not possess
                           adequate  financial  capability to perform the Tenant
                           obligations as and when due or required, or

                  (c)      the  assignee  or  subtenant   proposes  to  use  the
                           Premises (or part  thereof) for a purpose  other than
                           the  purpose  for which the  Premises  may be used as
                           stated in Section 1.1 hereof, or

                  (d)      there shall be existing an Event of Default (defined 
                           in Section 7.1)

                  (e)      in the case of a proposed  subletting,  the  proposed
                           location  of  the  subtenant's   premises  would,  in
                           Landlord's reasonable judgment, negatively impact the
                           configuration of the remainder of the Premises or the
                           Building  or  make  the  management  of the  Building
                           significantly  more  difficult  given  the  size  and
                           layout of such subtenant's premises.

5.6.4    In addition,  in the case of any  assignment  or subleasing as to which
         Landlord may consent (other than an assignment or subletting  permitted
         under  Section 5.6.1 hereof) such consent shall be upon the express and
         further condition,  covenant and agreement, and Tenant hereby covenants
         and agrees that, in addition to the Annual Fixed Rent,  additional rent
         and other  charges to be paid  pursuant  to this Lease,  fifty  percent
         (50%) of the  "Assignment/Sublease  Profits" (hereinafter  defined), if
         any, shall be paid to Landlord.

         The  "Assignment/Sublease  Profits" shall be the excess, if any, of (a)
         the "Assignment/ Sublease Net Revenues" as hereinafter defined over (b)
         the Annual Fixed Rent and additional rent and other charges provided in
         this Lease. The  "Assignment/Sublease  Net Revenues" shall be the fixed
         rent,  additional  rent and all other  charges and sums payable  either
         initially or over the term of the sublease or assignment plus all other
         profits  and  increases  to be  derived  by  Tenant as a result of such
         subletting or assignment,  less the reasonable costs of Tenant incurred
         in such subleasing or assignment (the definition of which shall include
         but  not  necessarily  be  limited  to  rent   concessions,   brokerage
         commissions and alteration allowances).

         All payments of the  Assignment/Sublease  Profits due Landlord shall be
         made within thirty (30) days of receipt of same by Tenant.

5.6.5     (A) It shall be a  condition  of the  validity  of any  assignment  or
          subletting of right under  Section 5.6.1 above,  or consented to under
          Section 5.6.3 above,  that the assignee or sublessee  agrees  directly
          with Landlord,  in form  reasonably  satisfactory  to Landlord,  to be
          bound  by all the  obligations  of the  Tenant  hereunder,  including,
          without  limitation,  the obligation to pay the rent and other amounts
          provided  for  under  this  Lease  (but  in  the  case  of  a  partial
          subletting,  such  subtenant  shall agree on a pro rata basis to be so
          bound)  including the provisions of Sections 5.6 through 5.6.5 hereof,
          but such  assignment or subletting  shall not relieve the Tenant named
          herein of any of the obligations of the Tenant  hereunder,  and Tenant
          shall remain fully and primarily liable thereof.

         (B) As additional rent,  Tenant shall reimburse  Landlord  promptly for
         reasonable out of pocket legal and other expenses  incurred by Landlord
         in  connection  with any request by Tenant for consent to assignment or
         subletting.

         (C) If this Lease be  assigned,  or if the Premises or any part thereof
         be sublet or occupied by anyone  other than  Tenant,  Landlord may upon
         seven (7) days  prior  notice to  Tenant,  at any time and from time to
         time,  collect rent and other charges from the  assignee,  sublessee or
         occupant  and  apply  the net  amount  collected  to the rent and other
         charges  herein  reserved and Tenant shall have no  obligation  to make
         payment for such amount collected, but no such assignment,  subletting,
         occupancy or collection shall be deemed a waiver of this covenant, or a
         waiver of the  provisions of Sections 5.6 through  5.6.5 hereof,  or of
         the  obligation  to payment for other or future  amounts due under this
         Lease,  or the  acceptance of the assignee,  sublessee or occupant as a
         tenant or a release of Tenant from the further performance by Tenant of
         covenants on the part of Tenant  herein  contained,  the Tenant  herein
         named to remain primarily liable under this Lease.

         (D) The  consent by  Landlord  to an  assignment  or  subletting  under
         Section  5.6.3  shall in no way be  construed  to relieve  Tenant  from
         obtaining  the  express  consent in writing to  Landlord to any further
         assignment or subletting.

5.6.6     Notwithstanding  anything contained in this Lease to the contrary,  in
          the case of (a) a proposed  assignment of this Lease or (b) a proposed
          subleasing  of 58,000  rentable  square  feet or more of the  Rentable
          Floor Area of the Premises (it being understood and agreed that in the
          event Tenant should desire to sublease 58,000 square feet or more in a
          single sublease transaction, for the purposes of this paragraph Tenant
          need only provide  Landlord with notice of its intent to sublease such
          space,   as  opposed  to  providing   Landlord  with  the  notice  and
          information  described  in the  first  paragraph  of  Section  5.6.2),
          Landlord may elect, at its option, by notice given within fifteen (15)
          days after receipt of Tenant's  notice given  pursuant to this Section
          5.6.6,  to  terminate  this  Lease in its  entirety  in the case of an
          assignment  or as to such  portions  of the  Premises  proposed  to be
          sublet  which would,  if made,  trigger  Landlord's  rights under this
          paragraph (herein called the "Terminated  Portion of the Premises") as
          of a date which  shall be not  earlier  than sixty (60) days nor later
          than one  hundred  (100)  days  after  Landlord's  notice  to  Tenant;
          provided,  however  that  upon the  termination  date as set  forth in
          Landlord's  notice,  all of Landlord's and Tenant's  obligations as to
          either the Premises or to the  Terminated  Portion of the Premises (as
          applicable)  relating to the period after such  termination  date (but
          not those relating to the period before such  termination  date) shall
          cease and provided,  further, that in the event of a subletting,  this
          Lease shall remain in full force and effect as to the remainder of the
          Premises, except that from and after the termination date the Rentable
          Floor Area of the Premises shall be reduced to the rentable floor area
          of the  remainder  of the  Premises  and after  such  termination  all
          references in this Lease to the "Premises" or the "Rentable Floor Area
          of the Premises"  shall be deemed to be references to the remainder of
          the Premises and accordingly  Tenant's payments for Annual Fixed Rent,
          operating  costs and real estate  taxes shall be reduced on a pro rata
          basis  to  reflect  the size of the  remainder  of the  Premises,  and
          provided further that Landlord shall have the right at Landlord's sole
          cost and expense to make such  alterations and  improvements as may be
          required to separately demise the Terminated  Portion of the Premises;
          provided,  further that such notice of  termination  shall be null and
          void of no force and effect and this Lease shall  remain in full force
          and effect as to both the  Terminated  Portion of the Premises and the
          remainder  of the  Premises if within  five (5) days after  Landlord's
          termination  notice  Tenant shall give notice to Landlord  that Tenant
          withdraws Tenant's assignment or sublease request.

5.7      To defend with counsel first approved by Landlord (which approval shall
         not be unreasonably withheld or delayed),  save harmless, and indemnify
         Landlord  from any  liability  for  injury,  accident  or damage to any
         person or  property,  and from any  claims,  actions,  proceedings  and
         expenses  and  costs  in  connection   therewith   (including   without
         limitation  reasonable counsel fees) to the extent (i) arising from (a)
         the omission,  fault,  willful act,  negligence or other  misconduct of
         Tenant  or (b)  from any use made or  thing  done or  occurring  on the
         Premises not due to the  omission,  fault,  willful act,  negligence or
         other  misconduct of Landlord,  or (ii)  resulting  from the failure of
         Tenant to perform and discharge its  covenants  and  obligations  under
         this Lease;  to  maintain  in  responsible  companies  qualified  to do
         business,  and in good standing,  in Massachusetts  commercial  general
         liability insurance or comprehensive general liability insurance with a
         broad form comprehensive  liability  endorsement  covering the Premises
         insuring  Landlord  (as an  additional  insured) as well as Tenant with
         limits which shall, at the  commencement of the Term, be at least equal
         to those  stated in Section  1.1 and from time to time  during the Term
         shall be for such higher limits, if any, as are customarily  carried in
         Greater  Boston  with  respect  to  similar  properties  or  which  may
         reasonably  be  required  by  Landlord,   and  workmen's   compensation
         insurance  with  statutory  limits  covering all of Tenant's  employees
         working in the Premises,  and to deposit with Landlord on or before the
         Commencement   Date  and   concurrent   with  all   renewals   thereof,
         certificates  for  such  insurance  bearing  the  endorsement  that the
         policies  will not be canceled  until after  thirty (30) days'  written
         notice to Landlord.  Notwithstanding anything contained in this Section
         5.7 to the  contrary,  in no  event  shall  Tenant  be  liable  for any
         special, indirect or consequential damages.

5.8      That all of the furnishings,  fixtures, equipment, effects and property
         of every  kind,  nature and  description  of Tenant and of all  persons
         claiming by, through or under Tenant which,  during the  continuance of
         this  Lease or any  occupancy  of the  Premises  by  Tenant  or  anyone
         claiming  under  Tenant,  may be on the  Premises or  elsewhere  in the
         Building  or on the  Site,  shall be at the sole  risk  and  hazard  of
         Tenant,  and if the whole or any part  thereof  shall be  destroyed  or
         damaged by fire,  water or otherwise,  or by the leakage or bursting of
         water pipes,  or other pipes, by theft or from any other cause, no part
         of said  loss or damage is to be  charged  to or be borne by  Landlord,
         provided that this  limitation  shall not apply to damage to the extent
         caused by Landlord's  negligent act or negligent failure to act and not
         covered by  insurance  either  maintained  by Tenant or  required to be
         maintained  by Tenant  under this  Lease,  and  provided  further  that
         Landlord  shall  in  no  event  be  indemnified  or  held  harmless  or
         exonerated from any liability to Tenant or to any other person, for any
         injury,  loss,  damage or liability to the extent such indemnity,  hold
         harmless or exoneration is prohibited by law.

5.9      To  permit  Landlord  and its  agents  to  examine  the  Premises  upon
         reasonable  prior  notice  (except  in the  event of an  emergency)  at
         reasonable  times and, if Landlord shall so elect,  to make any repairs
         or  replacements  Landlord may deem necessary;  to remove,  at Tenant's
         expense, any alterations,  addition,  signs, curtains,  blinds, shades,
         awnings,  aerials,  flagpoles,  or the like not consented to in writing
         (to  the  extent  Landlord's  consent  is  required  hereunder)  or not
         conforming to the  requirements of the second  paragraph of Section 3.3
         (to the extent Landlord's  consent is not required  hereunder);  and to
         show the  Premises to  prospective  tenants  during the nine (9) months
         preceding  expiration  of the Term and to  prospective  purchasers  and
         mortgagees upon reasonable prior notice at all reasonable times.

5.10     With the  exception  of the dense  file room to be  located as shown on
         Exhibit H on the first floor of the  Building  (for which the live load
         per square  foot of floor area  shall not  exceed 300  pounds),  not to
         place a load upon the Premises  exceeding an average rate of 100 pounds
         of live  load  per  square  foot of  floor  area  (partitions  shall be
         considered as part of the live load);  and not to move any safe,  vault
         or other heavy  equipment  in, about or out of the  Premises  except in
         such  manner  and at  such  time as  Landlord  shall  in each  instance
         authorize;  Tenant's business  machines and mechanical  equipment which
         cause  vibration  or noise  that  may be  transmitted  to the  Building
         structure or to any other space in the Building  shall be so installed,
         maintained  and used by Tenant so as to  eliminate  such  vibration  or
         noise.

5.11     To pay promptly  when due all taxes which may be imposed upon  personal
         property (including, without limitation, fixtures and equipment) in the
         Premises to whomever assessed.

                                   ARTICLE VI

                               CASUALTY AND TAKING

6.1      In case  during the Lease Term the  Building or the Site are damaged by
         fire or other casualty and such fire or casualty damage cannot,  in the
         ordinary  course,  reasonably  be expected  to be  repaired  within one
         hundred fifty (150) days from the time that repair work would commence,
         Landlord or Tenant  may, at either  party's  election,  terminate  this
         Lease by notice  given to the other party  within sixty (60) days after
         the date of such fire or other casualty,  specifying the effective date
         of  termination.  The effective date of  termination  specified by such
         notice shall not be less than thirty (30) days nor more than forty-five
         (45) days after the date of notice of such termination.

         Unless terminated pursuant to the foregoing provision, this Lease shall
         remain in full  force and effect  following  any such  damage  subject,
         however, to the following provisions.

         If the  Building or the Site or any part thereof are damaged by fire or
         other  casualty  and this Lease is not so  terminated,  or  Landlord or
         Tenant have no right to terminate this Lease,  and in any such case the
         holder of any  mortgage  which  includes  the Building as a part of the
         mortgaged  premises  or any  ground  lessor of any ground  lease  which
         includes  the  Site as  part of the  demised  premises  allows  the net
         insurance  proceeds to be applied to the  restoration  of the  Building
         (and/or the Site),  Landlord shall,  promptly after such damage and the
         determination of the net amount of insurance  proceeds  available,  use
         due  diligence to restore the Premises and the Building in the event of
         damage  thereto  (excluding  any  furniture,  fixtures or  equipment of
         Tenant,  or any other items  installed,  or paid for, by Tenant,  other
         than the  initial  tenant  improvement  work  described  in Article III
         hereof),  into  proper  condition  for  use and  occupation  and a just
         proportion  of the  Annual  Fixed  Rent,  Tenant's  share of  Operating
         Expenses  and  Tenant's  share of real  estate  taxes  shall be  abated
         according to the nature and extent of the injury to the Premises,  from
         the date of such fire or other  casualty  until the Premises shall have
         been restored by Landlord  substantially into such condition except for
         punch list items and long lead items.  Notwithstanding  anything herein
         contained to the  contrary,  Landlord  shall not be obligated to expend
         for such  repair  and  restoration  any  amount  in  excess  of the net
         insurance proceeds.

6.2      Notwithstanding  anything to the contrary  contained in this Lease,  if
         the Building or the Premises shall be substantially  damaged by fire or
         casualty  as the result of a risk not  covered by the forms of casualty
         insurance at the time  maintained by Landlord and such fire or casualty
         damage  cannot,  in the ordinary  course,  reasonably be expected to be
         repaired  within  ninety (90) days from the time that repair work would
         commence, Landlord or Tenant may, at either party's election, terminate
         the Term of this Lease by notice to the other party given within thirty
         (30)  days  after  such  loss,   specifying   the  effective   date  of
         termination. The effective date of termination specified by such notice
         shall be not less than thirty (30) days nor more than  forty-five  (45)
         days after the date of notice of such  termination.  Unless  terminated
         pursuant to the  foregoing  provision,  this Lease shall remain in full
         force  and  effect  following  any  such  damage.  If the  Lease is not
         terminated  as  aforesaid,  then a just  proportion of the Annual Fixed
         Rent,  Tenant's share of Operating  Expenses and Tenant's share of Real
         Estate Taxes shall be abated  according to the nature and extent of the
         injury to the  Premises,  from and after the date of such fire or other
         casualty  until the Premises  shall have been restored by Landlord into
         proper condition for use and occupation except for punch list items and
         long lead items.

6.3      If the entire  Building,  or such  portion of the Premises as to render
         the balance (if reconstructed to the maximum extent  practicable in the
         circumstances)  unsuitable  for  Tenant's  purposes,  shall be taken by
         condemnation or right of eminent domain,  Landlord or Tenant shall have
         the right to terminate  this Lease by notice to the other of its desire
         to do so specifying  the effective date of  termination,  provided that
         such notice is given not later than  thirty (30) days after  Tenant has
         been  deprived  of  possession.   The  effective  date  of  termination
         specified  by such  notice  shall be not less than  thirty (30) days or
         more  than  forty-five  (45)  days  after  the date of  notice  of such
         termination.  Unless  terminated  pursuant to the foregoing  provision,
         this Lease  shall  remain in full force and effect  following  any such
         taking, subject, however, to the following provisions.

         Further,  if so much of the Building  shall be so taken that  continued
         operation  of the  Building  would be  uneconomic  as a  result  of the
         taking, Landlord shall have the right to terminate this Lease by giving
         notice to Tenant of  Landlord's  desire to do so not later than  thirty
         (30) days after Tenant has been  deprived of possession of the Premises
         (or such portion thereof as may be taken).  If Landlord shall give such
         notice,  then this Lease shall  terminate as of the date of such notice
         with the same force and effect as if such date were the date originally
         established as the expiration date hereof.

         Should any part of the  Premises  be so taken or  condemned  during the
         Lease  Term  hereof,  and  should  this  Lease  not  be  terminated  in
         accordance  with  the  foregoing  provisions,  and  the  holder  of any
         mortgage which includes the Premises as part of the mortgaged  premises
         or any ground  lessor of any ground  lease which  includes  the Site as
         part of the demised premises allows the net condemnation proceeds to be
         applied to the restoration of the Building,  Landlord agrees, after the
         determination of the net amount of condemnation  proceeds  available to
         Landlord,  to use due  diligence to put what may remain of the Premises
         into  proper  condition  for use and  occupation  as  nearly  like  the
         condition of the Premises  prior to such taking as shall be practicable
         (excluding any furniture, fixtures or equipment of Tenant, or any other
         items installed or paid for by Tenant).  Notwithstanding the foregoing,
         Landlord  shall  not  be  obligated  to  expend  for  such  repair  and
         restoration any amount in excess of the net condemnation proceeds.

         If the  Premises  shall be  affected  by any  exercise  of the power of
         eminent domain, then the Annual Fixed Rent, Tenant's share of Operating
         Expenses  and  Tenant's  share of real estate taxes shall be justly and
         equitably  abated and reduced from the date of the taking  according to
         the nature and extent of the loss of use  thereof  suffered  by Tenant;
         and in case of a taking which  permanently  reduces the Rentable  Floor
         Area of the  Premises,  a just  proportion  of the Annual  Fixed  Rent,
         Tenant's share of Operating  Expenses and Tenant's share of real estate
         taxes shall be abated  and/or  reduced  from the date of the taking for
         the  remainder  of the Lease  Term.  Landlord  shall  deliver to Tenant
         copies of any notices from the taking  authority  regarding an exercise
         of the power of eminent domain  affecting the Premises with  reasonable
         business expedience.

6.4      Landlord shall have and hereby reserves to itself any and all rights to
         receive  awards made for damages to the  Premises,  the  Building,  the
         Complex and the Site and the leasehold  hereby  created,  or any one or
         more of them,  accruing by reason of  exercise of eminent  domain or by
         reason  of  anything  lawfully  done in  pursuance  of  public or other
         authority.  Except as provided  in the next  paragraph,  Tenant  hereby
         grants,  releases and assigns to Landlord  all Tenant's  rights to such
         awards,  and covenants to execute and deliver such further  assignments
         and  assurances  thereof  as  Landlord  may from time to time  request,
         unless   Tenant  is  entitled  to  such  awards  as  a  matter  of  law
         irrespective of any contractual provisions to the contrary.

         Nothing  contained  herein shall be  construed  to prevent  Tenant from
         prosecuting in any condemnation proceeding a claim for the value of any
         of Tenant's usual trade fixtures installed in the Premises by Tenant at
         Tenant's  expense and for  relocation  and moving  expenses and loss of
         Tenant's business,  provided that such action and resulting award shall
         not affect or diminish the amount of compensation otherwise recoverable
         by Landlord from the taking authority.


                                   ARTICLE VII

                                     DEFAULT

7.1      (a) If at any time subsequent to the date of this Lease any one or more
         of the following events (herein sometimes called an "Event of Default")
         shall occur:

                  (i)      Tenant  shall  fail to pay  the  Annual  Fixed  Rent,
                           additional  rent or other charges for which provision
                           is made  herein  on or  before  the date on which the
                           same become due and payable,  and the same  continues
                           for  seven  (7)  days  after  notice  from   Landlord
                           thereof, or

                  (ii)     Landlord having rightfully given the notice specified
                           in  subsection  (a) (i) above  three (3) times in any
                           calendar  year,  Tenant shall  thereafter in the same
                           calendar  year  fail to pay the  Annual  Fixed  Rent,
                           additional  rent or other  charges  on or before  the
                           date on which the same become due and payable, or,

                  (iii)    Tenant  shall  neglect  or fail to perform or observe
                           any other covenant herein  contained on Tenant's part
                           to be  performed or observed and Tenant shall fail to
                           remedy the same within  thirty (30) days after notice
                           to Tenant  specifying such neglect or failure,  or if
                           such  failure is of such a nature that Tenant  cannot
                           reasonably  remedy the same  within  such thirty (30)
                           day period, Tenant shall fail to commence promptly to
                           remedy  the  same and to  prosecute  such  remedy  to
                           completion with diligence and continuity; or

                  (iv)     Tenant's  leasehold interest in the Premises shall be
                           taken  on  execution  or  by  other  process  of  law
                           directed  against  Tenant and such execution or other
                           process  is  not   released   or   dismissed   within
                           forty-five (45) days; or

                  (v)      Tenant shall make an assignment for the benefit of 
                           creditors or shall file a voluntary petition in 
                           bankruptcy or shall be adjudicated bankrupt or 
                           insolvent, or shall file any petition or answer 
                           seeking any reorganization, arrangement, composition,
                           readjustment, liquidation, dissolution or similar
                           relief for itself under any present or future 
                           Federal, State or other statute, law or regulation 
                           for the relief of debtors, or shall seek or consent 
                           to or acquiesce in the appointment of any trustee,
                           receiver or liquidator of Tenant or of all or any 
                           substantial part of its properties, or shall admit in
                           writing its inability to pay its debts generally as 
                           they become due; or

                  (vi)     A petition shall be filed against Tenant in 
                           bankruptcy or under any other law seeking any 
                           reorganization, arrangement, composition, 
                           readjustment, liquidation, dissolution, or similar 
                           relief under any present or future Federal, State or 
                           other statute, law or regulation and shall remain 
                           undismissed or unstayed for an aggregate of sixty 
                           (60) days (whether or not consecutive), or if any 
                           debtor in possession (whether or not Tenant) trustee,
                           receiver or liquidator of Tenant or of all or any 
                           substantial part of its properties or of the Premises
                           shall be appointed without the consent or 
                           acquiescence of Tenant and such appointment shall 
                           remain unvacated or unstayed for an aggregate of 
                           sixty (60) days (whether or not consecutive);

         then, and in any of said cases (notwithstanding any license of a former
         breach of  covenant  or waiver of the  benefit  hereof or  consent in a
         former  instance),  Landlord  lawfully may,  immediately or at any time
         thereafter,  and without demand or further notice  terminate this Lease
         by  notice  to  Tenant,  specifying  a date not less than ten (10) days
         after the giving of such  notice on which this Lease  shall  terminate,
         and this Lease  shall come to an end on the date  specified  therein as
         fully and  completely  as if such date were the date herein  originally
         fixed for the  expiration of the Lease Term (Tenant  hereby waiving any
         rights of  redemption),  and Tenant  will then quit and  surrender  the
         Premises to Landlord,  but Tenant shall  remain  liable as  hereinafter
         provided.

         (b) If this  Lease  shall  have been  terminated  as  provided  in this
         Article,  then Landlord may,  re-enter the Premises pursuant to summary
         proceedings  instituted  in  accordance  with  applicable  laws  or  an
         agreement with Tenant  (provided that no such  proceedings or agreement
         shall be required  for such entry if Tenant shall vacate or abandon the
         Premises),  and remove and dispossess  Tenant and all other persons and
         any and all property from the same, as if this Lease had not been made.

         (c) In the  event  that  this  Lease  is  terminated  under  any of the
         provisions   contained  in  Section  7.1  (a)  or  shall  be  otherwise
         terminated by breach of any obligation of Tenant,  Tenant covenants and
         agrees forthwith to pay and be liable for, on the days originally fixed
         herein  for  the  payment   thereof,   amounts  equal  to  the  several
         installments  of rent and other charges  reserved as they would,  under
         the  terms  of this  Lease,  become  due if  this  Lease  had not  been
         terminated or if Landlord had not entered or re-entered,  as aforesaid,
         and whether  the  Premises  be relet or remain  vacant,  in whole or in
         part,  or relet for a period less than the  remainder of the Term,  and
         for the  whole  thereof,  but in the  event  the  Premises  be relet by
         Landlord,  Tenant  shall be  entitled  to a credit in the net amount of
         rent and  other  charges  received  by  Landlord  in  reletting,  after
         deduction of all reasonable expenses incurred in reletting the Premises
         (including,  without limitation,  remodeling costs,  brokerage fees and
         the like), and in collecting the rent in connection  therewith,  in the
         following manner:

         Amounts  received by Landlord  after  reletting  shall first be applied
         against  such  Landlord's  reasonable  expenses,  until  the  same  are
         recovered,  and until such  recovery,  Tenant shall pay, as of each day
         when a payment would fall due under this Lease, the amount which Tenant
         is obligated to pay under the terms of this Lease  (Tenant's  liability
         prior to any such  reletting  and  such  recovery  not in any way to be
         diminished as a result of the fact that such  reletting  might be for a
         rent higher than the rent provided for in this Lease); when and if such
         expenses  have been  completely  recovered,  the amounts  received from
         reletting  by Landlord as have not  previously  been  applied  shall be
         credited  against  Tenant's  obligations  as of each day when a payment
         would fall due under this Lease,  and only the net amount thereof shall
         be payable by Tenant.  Further,  amounts received by Landlord from such
         reletting for any period shall be credited only against  obligations of
         Tenant  allocable  to such  period,  and shall not be credited  against
         obligations of Tenant  hereunder  accruing  subsequent or prior to such
         period;  nor shall any credit of any kind be due for any  period  after
         the date when the term of this Lease is scheduled  to expire  according
         to its terms.

          (d)  (i) At any time after such  termination  (whether or not Landlord
               shall have  previously  collected  any damages under said Section
               7.1 (c) as  aforesaid)  and upon  written  notice by  Landlord to
               Tenant of  Landlord's  election  to  collect  damages  under this
               Section 7.1 (d) in lieu of damages  under  Section 7.1 (c) above,
               Tenant shall pay to Landlord as  liquidated  final damages and in
               lieu of all other damages (with respect to rent, operating costs,
               taxes and electricity  payable by Tenant under this Lease) beyond
               the  date of  notice  from  Landlord  to  Tenant,  at  Landlord's
               election,  such a sum as at the time of the giving of such notice
               represents  the amount of the  excess,  if any, of the total rent
               and other  benefits  which would have  accrued to Landlord  under
               this  Lease  from the date of such  notice  for what would be the
               then  unexpired  Lease  Term if the Lease  terms  had been  fully
               complied with by Tenant over and above the then cash rental value
               (in advance) of the Premises for the balance of the Lease Term.

          (ii) For the purposes of this Article,  if Landlord  elects to require
               Tenant  to  pay  damages  in  accordance   with  the  immediately
               preceding paragraph, the total rent shall be computed by assuming
               that  Tenant's  share of excess taxes,  Tenant's  share of excess
               operating  costs and Tenant's  share of excess  electrical  costs
               would be, for the balance of the unexpired  Term from the date of
               such  notice,  the amount  thereof  (if any) for the  immediately
               preceding annual period payable by Tenant to Landlord.

         (e) In case of any Event of Default,  and Tenant shall be  dispossessed
         by summary  proceedings or pursuant to or an agreement with Landlord or
         Tenant  shall vacate or abandon the  Premises,  Landlord may (i) re-let
         the  Premises  or any  part or  parts  thereof,  either  in the name of
         Landlord  or  otherwise,  for a term or terms  which may at  Landlord's
         option  be equal to or less  than or  exceed  the  period  which  would
         otherwise  have  constituted  the balance of the Term of this Lease and
         may  grant  concessions  or  free  rent  to the  extent  that  Landlord
         considers reasonably advisable or necessary to re-let the same and (ii)
         may make such  alterations,  repairs and decorations in the Premises as
         Landlord in its sole judgment considers  advisable or necessary for the
         purpose of reletting the Premises;  and the making of such alterations,
         repairs and  decorations  shall not operate or be  construed to release
         Tenant from liability  hereunder as aforesaid.  Tenant hereby expressly
         waives any and all rights of redemption granted by or under any present
         or future laws in the event of Tenant being evicted or  dispossessed in
         accordance  with  the  provisions  of this  Lease,  or in the  event of
         Landlord  obtaining  possession of the Premises in accordance  with the
         provisions  of this Lease,  by reason of the violation by Tenant of any
         of the covenants and conditions of this Lease.

         (f) The specified  remedies to which Landlord may resort  hereunder are
         not  intended to be  exclusive  of any  remedies or means of redress to
         which Landlord may at any time be entitled lawfully (provided, however,
         that  Landlord  shall not be entitled to receive  damages under Section
         7.1(c) after such time as it has elected to receive  liquidated damages
         under Section 7.1(d) above), and Landlord may invoke any remedy allowed
         at law or in equity as if specific  remedies  were not herein  provided
         for. Further,  nothing contained in this Lease shall limit or prejudice
         the right of Landlord to prove and obtain in proceedings for bankruptcy
         or insolvency  by reason of the  termination  of this Lease,  an amount
         equal to the maximum allowed by any statute or rule of law in effect at
         the time when, and governing the proceedings in which,  the damages are
         to be proved,  whether or not the amount be greater,  equal to, or less
         than the amount of the loss or damages referred to above.

7.2      Subject to the provisions of Section 8.17 (B) below,  Landlord shall in
         no  event  be in  default  in the  performance  of  any  of  Landlord's
         obligations  hereunder  unless and until  Landlord shall have failed to
         perform such  obligations  within thirty (30) days, or such  additional
         time as is  reasonably  required to correct any such default  (provided
         that  if  such  default  is of  such  a  nature  that  Landlord  cannot
         reasonably remedy the same within such thirty (30) day period, Landlord
         shall commence promptly to remedy the same and to prosecute such remedy
         to completion with diligence and continuity), after notice by Tenant to
         Landlord properly specifying wherein Landlord has failed to perform any
         such obligation.


                                   ARTICLE VIII

                              MISCELLANEOUS PROVISIONS

8.1      Tenant  covenants and agrees that Tenant will not do or permit anything
         to be done in or upon  the  Premises,  or  bring  in  anything  or keep
         anything  therein,  which  shall  invalidate  or  increase  the rate of
         insurance on the Premises or on the  Building  above the standard  rate
         applicable to premises  being  occupied for the use to which Tenant has
         agreed to devote the Premises;  and Tenant  further agrees that, in the
         event that Tenant shall  undertake any of the  foregoing  non-permitted
         uses,  Tenant  will  promptly  pay to  Landlord,  on  demand,  any such
         increase  resulting  therefrom,  which  shall  be due  and  payable  as
         additional rent thereunder.

8.2      Failure on the part of  Landlord or Tenant to complain of any action or
         non-action  on the part of the  other,  no matter how long the same may
         continue, shall never be a waiver by Tenant or Landlord,  respectively,
         of any of the other's rights hereunder.  Further, no waiver at any time
         of any of  the  provisions  hereof  by  Landlord  or  Tenant  shall  be
         construed  as a waiver of any of the  other  provisions  hereof,  and a
         waiver  at  any  time  of any of the  provisions  hereof  shall  not be
         construed as a waiver at any  subsequent  time of the same  provisions.
         The  consent or  approval  of Landlord or Tenant to or of any action by
         the other  requiring such consent or approval shall not be construed to
         waive or render unnecessary  Landlord's or Tenant's consent or approval
         to or of subsequent similar act by the other.

         No payment by Tenant,  or  acceptance  by Landlord,  of a lesser amount
         than shall be due from  Tenant to Landlord  shall be treated  otherwise
         than as a payment on account. The acceptance by Landlord of a check for
         a lesser amount with an endorsement or statement  thereon,  or upon any
         letter  accompanying  such check, that such lesser amount is payment in
         full,  shall be given no effect,  and  Landlord  may accept  such check
         without  prejudice to any other rights or remedies  which  Landlord may
         have against Tenant.

8.3      Except as otherwise  expressly  provided in Section  7.1(f) above,  the
         specific  remedies to which Landlord may resort under the terms of this
         Lease are  cumulative and are not intended to be exclusive of any other
         remedies  or means of  redress  to which  such  party  may be  lawfully
         entitled  in case of any breach or  threatened  breach by Tenant of any
         provisions of this Lease. In addition to the other remedies provided in
         this Lease,  Landlord  shall be entitled to the restraint by injunction
         of the  violation or attempted  or  threatened  violation of any of the
         covenants,  conditions  or  provisions  of this  Lease  or to a  decree
         compelling  specific  performance of any such covenants,  conditions or
         provisions.

8.4      Tenant, subject to the terms and provisions of this Lease on payment of
         the rent and  observing,  keeping and  performing  all of the terms and
         provisions  of this Lease on  Tenant's  part to be  observed,  kept and
         performed, shall lawfully, peaceably and quietly have, hold, occupy and
         enjoy  (i)  the   Premises   and  (ii)  any  and  all   other   rights,
         responsibilities  and  appurtenances  of Tenant under this Lease during
         the Term  subject  to the terms of this  Lease,  without  hindrance  or
         ejection by any persons lawfully  claiming under or through Landlord to
         have title to the Premises  superior to Tenant or without  hindrance or
         ejection  due to  Landlord's  failure to comply  with the terms of this
         Lease;  the  foregoing  covenant of quiet  enjoyment  is in lieu of any
         other  covenant,  express or implied;  and it is understood  and agreed
         that  this  covenant  and any  and  all  other  covenants  of  Landlord
         contained in this Lease shall be binding upon  Landlord and  Landlord's
         successors and assigns only with respect to breaches  occurring  during
         Landlord's or Landlord's successors' or assigns respective ownership of
         Landlord's interest hereunder, as the case may be.

         Further,  Tenant  specifically agrees to look solely to Landlord's then
         equity interest in the Building at the time owned (or in which Landlord
         holds  an  interest  as  ground  lessee)  and the  proceeds  of (i) any
         property  insurance  policy  covering  the  Building  and/or  the  Site
         resulting from a casualty where Landlord has elected not to restore and
         (ii) any insurance which Landlord  actually  carries covering any claim
         which  Tenant  may  have  against  Landlord,  less  the  amount  of any
         deductible,  for  recovery  of any  judgment  from  Landlord;  it being
         specifically agreed that neither Landlord (original or successor),  nor
         any  partner in or of  Landlord,  nor any  beneficiary  of any Trust of
         which any person holding Landlord's interest is Trustee,  shall ever be
         personally  liable  for any such  judgment,  or for the  payment of any
         monetary obligation to Tenant. The provision contained in the foregoing
         sentence is not intended to, and shall not, limit any right that Tenant
         might otherwise have to obtain  injunctive  relief against  Landlord or
         Landlord's  successors  in interest,  or any action not  involving  the
         personal liability of Landlord (original or successor),  any partner in
         or of Landlord,  any  successor  Trustee to the persons named herein as
         Landlord,  or any  beneficiary of any Trust of which any person holding
         Landlord's  interest is Trustee,  to respond in monetary  damages  from
         Landlord's  assets other than Landlord's  equity interest  aforesaid in
         the Building.  In no event shall  Landlord ever be liable to Tenant for
         any indirect or consequential  damages suffered by Tenant from whatever
         cause.

8.5      After  receiving  notice from any person,  firm or other entity that it
         holds a mortgage  which  includes the Premises as part of the mortgaged
         premises,  which  notice  shall set forth  the name,  mailing  address,
         telephone number,  facsimile number and a contact person of the holder,
         or that it is the ground lessor under a lease with Landlord,  as ground
         lessee,  which includes the Premises as a part of the demised premises,
         no notice from Tenant to Landlord shall be effective unless and until a
         copy of the same is given to such  holder  or  ground  lessor,  and the
         curing of any of  Landlord's  defaults by such holder or ground  lessor
         within a reasonable  time  thereafter  (including a reasonable  time to
         obtain  possession  of the premises if the  mortgagee or ground  lessor
         elects to do so) shall be treated as performance  by Landlord.  For the
         purposes  of this  Section  8.5 or Section  8.15,  the term  "mortgage"
         includes a mortgage on a leasehold interest of Landlord (but not one on
         Tenant's leasehold interest).

8.6      With reference to any assignment by Landlord or Landlord's  interest in
         this Lease,  or the rents payable  hereunder,  conditional in nature or
         otherwise,  which  assignment  is made to the holder of a  mortgage  or
         ground lease on property which includes the Premises, Tenant agrees:

         (a)      That the  execution  thereof by Landlord,  and the  acceptance
                  thereof by the holder of such  mortgage or the ground  lessor,
                  shall  never be treated  as an  assumption  by such  holder or
                  ground lessor of any of the obligations of Landlord hereunder,
                  unless such holder, or ground lessor, shall, by notice sent to
                  Tenant, specifically otherwise elect; and

         (b)      That, except as aforesaid,  such holder or ground lessor shall
                  be treated as having assumed Landlord's  obligations hereunder
                  only upon foreclosure of such holder's mortgage and the taking
                  of  possession  of the  Premises,  or, in the case of a ground
                  lessor,  the  assumption of Landlord's  position  hereunder by
                  such ground lessor.

         In no event shall the acquisition of title to the Building and the land
         on which  the same is  located  by a  purchaser  which,  simultaneously
         therewith,  leases the entire  Building or such land back to the seller
         thereof  be  treated  as an  assumption  by such  purchaser-lessor,  by
         operation of law or otherwise, of Landlord's obligations hereunder, but
         Tenant shall look solely to such seller-lessee, and its successors from
         time  to time in  title,  for  performance  of  Landlord's  obligations
         hereunder  subject to the provisions of Section 8.4 hereof. In any such
         event, this Lease shall be subject and subordinate to the lease to such
         purchaser provided that such purchaser agrees to recognize the right of
         Tenant to use and  occupy  the  Premises  upon the  payment of rent and
         other charges payable by Tenant under this Lease and the performance by
         Tenant of  Tenant's  obligations  under  this Lease and  provided  that
         Tenant  agrees to  attorn to such  purchaser.  For all  purposes,  such
         seller-lessee,  and its  successors  in  title,  shall be the  landlord
         hereunder unless and until Landlord's  position shall have been assumed
         by such purchaser-lessor.

8.7      No act or thing done by Landlord  during the Lease Term shall be deemed
         an  acceptance  of a surrender  of the  Premises,  and no  agreement to
         accept  such  surrender  shall be valid,  unless in  writing  signed by
         Landlord.  No employee of Landlord or of  Landlord's  agents shall have
         any power to accept the keys of the Premises  prior to the  termination
         of this Lease.  The  delivery of keys to any employee of Landlord or of
         Landlord's  agents shall not operate as a termination of the Lease or a
         surrender of the Premises.

8.8      (A) Tenant  warrants and represents  that Tenant has not dealt with any
         broker in connection with the consummation of this Lease other than the
         broker,  person or firm, if any,  designated in Section 1.1 hereof; and
         in the  event  any  claim is made  against  the  Landlord  relative  to
         dealings  by  Tenant  with  brokers  other  than the  Brokers,  if any,
         designated in Section 1.1 hereof, Tenant shall defend the claim against
         Landlord with counsel of Tenant's  selection first approved by Landlord
         (which approval will not be unreasonably  withheld or delayed) and save
         harmless  and  indemnify  Landlord  on account of loss,  cost or damage
         which may arise by reason of such claim.

         (B) Landlord  warrants and represents  that Landlord has not dealt with
         any broker in connection with the consummation of this Lease other than
         the broker,  person or firm, if any,  designated in Section 1.1 hereof;
         and in the event any  claim is made  against  the  Tenant  relative  to
         dealings by  Landlord  with  brokers  other than the  Brokers,  if any,
         designated  in Section  1.1  hereof,  Landlord  shall  defend the claim
         against Tenant with counsel of Landlord's  selection  first approved by
         Tenant (which approval shall not be  unreasonably  withheld or delayed)
         and save  harmless  and  indemnify  Tenant on account of loss,  cost or
         damage which may arise by reason of such claim. Landlord agrees that it
         shall be solely responsible for the payment of brokerage commissions to
         the Broker, if any, designated in Section 1.1 hereof.

8.9      If any term or provision of this Lease, or the  application  thereof to
         any  person  or  circumstance  shall,  to any  extent,  be  invalid  or
         unenforceable,  the remainder of this Lease, or the application of such
         term or  provision to persons or  circumstances  other than those as to
         which  it is held  invalid  or  unenforceable,  shall  not be  affected
         thereby,  and each term and  provision of this Lease shall be valid and
         be enforced to the fullest extent permitted by law.

8.10     The  obligations  of this Lease shall run with the land,  and except as
         herein otherwise  provided,  the terms hereof shall be binding upon and
         shall inure to the benefit of the successors and assigns, respectively,
         of Landlord and Tenant and, if Tenant shall be an individual,  upon and
         to his heirs, executors,  administrators,  successors and assigns. Each
         term and each  provision  of this Lease to be performed by Tenant shall
         be  construed  to be both a covenant  and a  condition.  The  reference
         contained  to  successors  and  assigns  of Tenant is not  intended  to
         constitute a consent to subletting or assignment by Tenant.

8.11     Tenant  agrees not to record the within  Lease,  but each party  hereto
         agrees,  on the request of the other, to execute a so-called  Notice of
         Lease or  short  form  lease  in form  recordable  and  complying  with
         applicable  law and  reasonably  satisfactory  to both  Landlord's  and
         Tenant's  attorneys.  In no event shall such document set forth rent or
         other charges payable by Tenant under this Lease; and any such document
         shall  expressly  state that it is executed  pursuant to the provisions
         contained  in this  Lease,  and is not  intended  to vary the terms and
         conditions of this Lease.

8.12     Whenever,  by the  terms of this  Lease,  notice  shall or may be given
         either to  Landlord or to Tenant,  such notice  shall be in writing and
         shall be hand  delivered  (provided  the  delivery  service  provides a
         delivery  receipt) or sent by  registered  or  certified  mail  postage
         prepaid:

                  If intended for Landlord, addressed to Landlord at the address
                  set forth on the first  page of this  Lease (or to such  other
                  address or  addresses  as may from time to time  hereafter  be
                  designated  by  Landlord  by  like  notice)  with  a  copy  to
                  Landlord, Attention: General Counsel.

                  If intended for Tenant, addressed to Tenant at the address set
                  forth  on the  second  page of this  Lease  (or to such  other
                  address or  addresses  as may from time to time  hereafter  be
                  designated by Tenant by like notice).

         All such notices  shall be effective  when  received  provided that the
         same are not  refused  (in which  case,  the date such  notice is first
         attempted to be delivered shall be the effective date).

         Where  provision  is  made  for  the  attention  of  an  individual  or
         department,  the notice shall be effective only if the wrapper in which
         such notice is sent is addressed to the attention of such individual or
         department.

8.13     Employees  or agents of Landlord  have no authority to make or agree to
         make a lease  or any  other  agreement  or  undertaking  in  connection
         herewith.   The  submission  of  this  document  for   examination  and
         negotiation does not constitute an offer to lease, or a reservation of,
         or option for, the Premises,  and this document shall become  effective
         and  binding  only  upon the  execution  and  delivery  hereof  by both
         Landlord and Tenant. All negotiations, considerations,  representations
         and understandings  between Landlord and Tenant are incorporated herein
         and may be  modified  or  altered  only by  written  agreement  between
         Landlord and Tenant, and no act or omission of any employee or agent of
         Landlord shall alter, change or modify any of the provisions hereof.

8.14     The titles of the Articles  throughout  this Lease are for  convenience
         and reference only, and the words contained  therein shall in no way be
         held  to  explain,  modify,  amplify  or  aid  in  the  interpretation,
         construction or meaning of the provisions of this Lease.

8.15     This Lease  shall be subject and  subordinate  to any  mortgage  now or
         hereafter  on the Site or the  Building,  or both,  and to each advance
         made or hereafter to be made under any  mortgage,  and to all renewals,
         modifications,  consolidations, replacements and extensions thereof and
         all  substitutions  therefor  provided that the holder of such mortgage
         agrees in writing to recognize any and all rights and  appurtenances of
         Tenant  under  this  Lease  (including  the right to use and occupy the
         Premises) upon the payment of rent and other charges  payable by Tenant
         under this Lease and the performance by Tenant of Tenant's  obligations
         hereunder.  In  confirmation  of such  subordination  and  recognition,
         Tenant shall, within ten (10) days of Landlord's  request,  execute and
         deliver such  instruments  of  subordination  and  recognition  as such
         mortgagee  may  reasonably  require,  subject  to the  receipt  of such
         instruments of recognition from such mortgagee as Tenant may reasonably
         request. In the event that any mortgagee or its respective successor in
         title shall succeed to the interest of Landlord, then, this Lease shall
         nevertheless  continue  in full force and  effect and Tenant  shall and
         does  hereby  agree to attorn to such  mortgagee  or  successor  and to
         recognize such  mortgagee or successor as its landlord,  subject to the
         receipt by Tenant of a  non-disturbance  and attornment  agreement from
         such mortgagee in form and substance reasonably satisfactory to Tenant.
         If any holder of a mortgage which  includes the Premises,  executed and
         recorded  prior to the date of this Lease,  shall so elect,  this Lease
         and the rights of Tenant  hereunder,  shall be superior in right to the
         rights of such holder,  with the same force and effect as if this Lease
         had been executed, delivered and recorded, or a statutory Notice hereof
         recorded,  prior to the  execution,  delivery and recording of any such
         mortgage.  The election of any such holder shall become  effective upon
         either notice from such holder to Tenant in the same fashion as notices
         from  Landlord to Tenant are to be given  hereunder or by the recording
         in the  appropriate  registry or recorder's  office of an instrument in
         which such holder  subordinates  its rights under such mortgage to this
         Lease.

8.16     Recognizing  that both  parties may find it  necessary  to establish to
         third parties, such as accountants,  banks, mortgagees or the like, the
         then current  status of  performance  hereunder,  either party,  on the
         request  of the other  made from time to time,  will  promptly  furnish
         within ten (10) days after  request to  Landlord,  or the holder of any
         mortgage encumbering the Premises,  or to Tenant, as the case may be, a
         statement,  in form reasonably  satisfactory to the party providing the
         same, of the status of any matter pertaining to this Lease,  including,
         without limitation,  acknowledgments that (or the extent to which) each
         party is in  compliance  with its  obligations  under the terms of this
         Lease. Any such statement  delivered by Tenant pursuant to this Section
         8.16 may be relied upon by any  prospective  purchaser  or mortgagee of
         the  Premises  or any  prospective  assignee  of any  mortgagee  of the
         Premises.

8.17     (A) If  Tenant  shall at any time  default  in the  performance  of any
         obligation  under this Lease,  Landlord shall have the right, but shall
         not be  obligated,  to enter  upon the  Premises  and to  perform  such
         obligation notwithstanding the fact that no specific provision for such
         substituted  performance by Landlord is made in this Lease with respect
         to such default.  In performing such obligation,  Landlord may make any
         reasonable  payment of money or perform any other act. All sums so paid
         by Landlord  (together  with  interest at the rate of one and  one-half
         percentage  points over the then prevailing prime rate in Boston as set
         by The First  National  Bank of Boston)  and all  necessary  incidental
         costs and expenses in connection  with the  performance of any such act
         by Landlord, shall be deemed to be additional rent under this Lease and
         shall be payable  to  Landlord  immediately  on  demand.  Landlord  may
         exercise the foregoing  rights without  waiving any other of its rights
         or releasing Tenant from any of its obligations under this Lease.

         (B) In the event Landlord fails to make such repairs as are required of
         Landlord  by the terms of this  Lease  within  thirty  (30) days  after
         written  notice  from  Tenant  to  Landlord  and to the  holder  of any
         mortgage on the Premises of which  Landlord has given Tenant  notice or
         of which  Tenant  has  actual  notice,  specifying  the  nature of such
         repairs (or if such  repairs are of the type which  cannot be completed
         within  thirty  (30) days,  then if  Landlord or the holder of any such
         mortgage (at the option of such mortgagee) fails to (i) commence making
         such repairs  within  thirty (30) days after such  written  notice from
         Tenant and (ii)  thereafter  prosecute such repairs to completion  with
         due diligence given the nature of such repairs), then thereafter at any
         time prior to Landlord's or such mortgagee's commencing such repairs or
         subsequent  to Landlord or such  mortgagee  commencing  such repairs if
         Landlord  or  such  mortgagee  has  not  prosecuted   such  repairs  to
         completion with due diligence given the nature of such repairs,  Tenant
         may,  but need not,  make such repairs and charge the  reasonable  cost
         thereof to Landlord;  provided,  however, that in the case of emergency
         repairs (i) such notice by Tenant to Landlord and such  mortgagee  need
         not be in writing,  and (ii) Tenant may make such emergency repairs and
         charge the  reasonable  cost thereof to Landlord if either  Landlord or
         such mortgagee has not made such emergency  repairs within a reasonable
         time after such notice.  If Landlord fails to reimburse Tenant for such
         reasonable  costs  within  thirty  (30) days  after the  submission  to
         Landlord  of  documentation  describing  the nature of such repair work
         performed by or for Tenant, Tenant shall have the right to commence and
         prosecute  suit  against  Landlord to collect  such  reasonable  costs.
         However,  in no event shall  Tenant  have the right to offset  against,
         withhold or deduct from Annual  Fixed Rent or  additional  rent payable
         under this Lease for any reason relating to this Section 8.17(B).

8.18     Any holding  over by Tenant  after the  expiration  of the term of this
         Lease shall be treated as a tenancy at  sufferance at one hundred fifty
         percent  (150%) of the rents and other  charges  herein  (prorated on a
         daily  basis) and shall  otherwise be on the terms and  conditions  set
         forth in this Lease,  as far as  applicable;  provided,  however,  that
         neither the  foregoing  nor any other term or  provision  of this Lease
         shall be deemed to permit  Tenant to retain  possession of the Premises
         or  hold  over  in  the  Premises   after  the  expiration  or  earlier
         termination of the Lease Term.

8.19     Any  insurance  carried by either party with respect to the Premises or
         property therein or occurrences  thereon shall, if it can be so written
         without  additional  premium or with an  additional  premium  which the
         other party agrees to pay,  include a clause or endorsement  denying to
         the insurer rights of subrogation against the other party to the extent
         rights have been waived by the insured prior to occurrence of injury or
         loss. Each party,  notwithstanding  any provisions of this Lease to the
         contrary,  hereby  waives any rights of recovery  against the other for
         injury or loss due to hazards  covered by such  insurance to the extent
         of the indemnification received thereunder.

8.20     Notwithstanding  any  provision of this Lease to the  contrary,  Tenant
         shall  have the right to  install  signage  with  Tenant's  name at the
         Building  entrance and at the driveway  entrance to the Complex subject
         to the following provisions:

          (A)  Tenant  shall have the right to install,  at its own  expense,  a
               sign at the Building  entrance with Tenant's name (the  "Building
               Entrance  Signage").  The Building Entrance Signage shall be of a
               size and design and placed in a location comparable to that found
               in the 195 West Street building  currently  leased by Landlord to
               Tenant,  shall  otherwise  be mutually  agreeable to Landlord and
               Tenant, and shall be subject to the applicable  provisions of the
               Zoning By-Law of the City of Waltham and to any other  applicable
               laws and  regulations.  It is  understood  and agreed that Tenant
               shall be responsible for obtaining all necessary permits relating
               to such  signage,  and that the  failure  by Tenant to obtain the
               same shall not give Tenant any right to terminate  this Lease nor
               entitle  Tenant to any abatement,  set-off or other  reduction of
               Annual  Fixed  Rent,  additional  rent or other  charges  payable
               hereunder.  Landlord  agrees to assist  Tenant with  commercially
               reasonable  efforts regarding  Tenant's  obtaining of permits and
               approvals for the Building  Entrance  Signage,  provided Landlord
               shall not be required  to expend any monies,  assume any costs or
               expenses or undertake any liability with respect thereto.

                  Notwithstanding  the  foregoing  and  Tenant's  right  to  the
                  Building Entrance  Signage,  Landlord shall have the right (i)
                  prior to such time as Tenant shall  directly  lease and occupy
                  (at a  minimum)  an  amount  of space  at  least  equal to the
                  rentable  square  footage  of Phase I of the  Building  in its
                  entirety and the Expansion Premises (the Threshold Amount), to
                  provide  signage at the  Building  entrance  for up to two (2)
                  other tenants of the Complex who lease the  equivalent of more
                  than one (1)  floor of Phase II of the  Building  (which  such
                  signage may remain notwithstanding that Tenant's occupancy has
                  reached  the  Threshold   Amount)  and  (ii)  after   Tenant's
                  occupancy has reached the Threshold Amount, to provide signage
                  at the Building  entrance to one (1) tenant of the Complex who
                  leases  the  equivalent  of two (2)  floors of Phase II of the
                  Building.  The foregoing  limitation on Landlord's  ability to
                  provide  signage at the  Building  entrance  to tenants of the
                  Complex shall  terminate and be of no further force and effect
                  if Tenant  shall  assign this Lease or if  Tenant's  occupancy
                  shall fall below 100,000 rentable square feet of floor area as
                  the result of subleasing  (other than to an approved  assignee
                  of Tenant's  entire  interest in this Lease for the balance of
                  the Lease Term or in connection with an assignment or sublease
                  under  Section  5.6.1 above);  provided,  however,  that in no
                  event shall the number of Building  entrance  signs be greater
                  than three (3)  (inclusive  of the Building  Entrance  Signage
                  provided to Tenant hereunder).

          (B)  Tenant shall also have the right,  at Tenant's  own  expense,  to
               install  a sign at the  driveway  entrance  to the  Complex  (the
               "Driveway Entrance Signage"). The Driveway Entrance Signage shall
               be placed in a location  comparable to that found at the driveway
               entrance  to the 195 West  Street  building  currently  leased by
               Landlord to Tenant,  shall  otherwise  be mutually  agreeable  to
               Landlord and Tenant with respect to size and design, and shall be
               subject to the applicable  provisions of the Zoning By-law of the
               City of Waltham and to any other applicable laws and regulations.
               It is understood and agreed that Tenant shall be responsible  for
               obtaining  all necessary  permits and approvals  relating to such
               signage,  and that the failure by Tenant to obtain the same shall
               not give  Tenant any right to  terminate  this Lease nor  entitle
               Tenant to any  abatement,  set-off or other  reduction  of Annual
               Fixed Rent,  additional rent or other charges payable  hereunder.
               Landlord  agrees to assist  Tenant with  commercially  reasonable
               efforts regarding Tenant's obtaining of permits and approvals for
               the Driveway  Entrance  Signage,  provided  Landlord shall not be
               required  to expend any  monies,  assume any costs or expenses or
               undertake any liability with respect thereto.

                  Notwithstanding  the fact  that  Tenant  has the  right to the
                  Driveway  Entrance  Signage,  Landlord shall have the right to
                  provide  one (1) other  tenant in the  Complex  who leases the
                  equivalent  of two (2) floors in Phase II of the Building with
                  rights  comparable  to Tenant's with respect to signage at the
                  driveway entrance to the Building.

         (C)      Notwithstanding anything contained herein to the contrary, the
                  right to corporate signage provided in this Section 8.20 shall
                  be exclusive to PAREXEL  International  Corporation  and shall
                  not pass to any  assignee  of this Lease or  subtenant  of the
                  Premises  (other than an assignee or subtenant  under  Section
                  5.6.1  above  or  an  approved  assignee  of  Tenant's  entire
                  interest in this Lease for the balance of the Lease Term).

          (D)  Notwithstanding  anything  contained  in this Section 8.20 to the
               contrary, Tenant's right to signage under this Section 8.20 shall
               terminate  and be of no further  force and  effect  and  Landlord
               shall have the right, at Tenant's expense,  to remove any signage
               described  in this Section 8.20 and repair any damage done to the
               Building  or  the  Site  (i)  upon  the   expiration  or  earlier
               termination  of  the  Term  of  this  Lease,  or  (ii)  upon  the
               occurrence  of an Event of Default  or (iii) with  respect to the
               Driveway Entrance Signage only, if Tenant shall assign this Lease
               (other than to an approved  assignee of Tenant's  entire interest
               in this Lease for the balance of the Lease Term or in  connection
               with an  assignment or sublease  under  Section 5.6.1 above).  In
               addition,  Tenant's right to Driveway Entrance Signage under this
               Section  8.20  shall  terminate  and be of no  further  force and
               effect and Landlord shall have the right, at Tenant's expense, to
               remove such Driveway  Entrance Signage and repair any damage done
               to the  Site  if  Tenant's  occupancy  shall  fall  below  90,000
               rentable square feet of floor area and the space then occupied by
               Tenant is either  (x) less than the space  occupied  by any other
               tenant  in the  Complex  or (y) less than the  equivalent  square
               footage of two (2) floors in Phase II of the Building.

8.21     Landlord shall  construct a food service  facility in the Building in a
         location in the  Building and of a size and scope as shown on Exhibit C
         for use by tenants in the Building and their  visitors,  which facility
         shall be  operational  on or before  July 1, 1999,  as such date may be
         extended  automatically  for  such  periods  of  time  as  Landlord  is
         prevented  from  proceeding  with or  completing  the same by reason of
         Landlord's  Force  Majeure  (such  periods  of time not to  exceed  one
         hundred  twenty (120) days in the  aggregate for any  Landlord's  Force
         Majeure) or any Tenant Delays (without limiting Landlord's other rights
         on account thereof).  Landlord agrees to provide Tenant with reasonable
         interim food service if the food service facility  contemplated  hereby
         is not  operational  by the Initial Phase I Scheduled  Completion  Date
         until such time as the facility is completed as aforesaid.

8.22     In  addition  to the  surface  parking to be  provided to Tenant in the
         ratio set forth in Section 1.1,  Landlord shall  construct a structured
         parking  facility  (the  Parking  Structure)  on the Site for  Tenant's
         exclusive use. The Parking Structure shall contain at least 300 parking
         spaces.  Landlord  shall use due  diligence  to  complete  the  Parking
         Structure  by  July  1,  1999,  subject  to  Landlord's  obtaining  all
         necessary  permits and approvals for the  construction and operation of
         the Parking Structure,  it being understood and agreed that the failure
         of  Landlord  to  complete  the  Parking  Structure  on or prior to any
         particular  date shall not entitle Tenant to any abatement or reduction
         of Annual Fixed Rent or additional rent or the right to withhold or set
         off against  Annual Fixed Rent or  additional  rent  otherwise  payable
         under this Lease. Tenant shall have the right to use 300 parking spaces
         in the parking area serving Phase II of the Building until such time as
         Phase II of the Building is fully leased to third-party tenants or such
         time as construction of the Parking Structure has been completed.

         Tenant shall be have the exclusive  right to use parking  spaces in the
         Parking Structure, and shall pay to Landlord (as additional rent and at
         the same time and in the same  manner as  Tenant's  payments  of Annual
         Fixed Rent under Section 2.5) rent therefor, as follows:
<TABLE>
         Time Period                      # of Spaces                         Amount
         <S>                               <C>                                <C>
         Months 1-3                          75                               $ 20,000 (for three month period)
         Months 4-6                         150                               $ 40,000 (for three month period)
         Months 7-9                         225                               $ 60,000 (for three month period)
         Months 10-12                       300                               $ 80,000 (for three month period)
         Year 2                             300                               $400,000 (annual)
         Year 3                             300                               $400,000 (annual)
         Year 4                             300                               $400,000 (annual)
         Year 5                             300                               $400,000 (annual)
         Year 6                             300                               $430,000 (annual)
         Year 7                             300                               $430,000 (annual)
         Year 8                             300                               $430,000 (annual)
         Year 9                             300                               $430,000 (annual)
         Year 10                            300                               $430,000 (annual)
         Years 11-15 (if first
         extension option exercised)        300                               $415,000 (annual)
         Years 16-20 (if second
         extension option exercised)        300                               $415,000 (annual)
</TABLE>
8.23     This Lease shall be governed  exclusively by the provisions  hereof and
         by the law of the Commonwealth of  Massachusetts,  as the same may from
         time to time exist.



<PAGE>


         EXECUTED as a sealed  instrument  in two or more  counterparts  each of
which shall be deemed to be an original.

                                          LANDLORD:

                                          BOSTON PROPERTIES LIMITED PARTNERSHIP


         WITNESS:                           By:      BOSTON PROPERTIES, INC.,
                                            its sole general partner

         ______________________             By:_/s/James C. Rosenfeld_________
                                            Name:__James C. Rosenfeld_________
                                            Title:_Senior Vice President______

                                          TENANT:

                                          PAREXEL INTERNATIONAL CORPORATION

                                            By_/s/Josef von Rickenbach_______
                                            Name__Josef von Rickenbach_______
                                            Title_CEO and Chairman___________
                                            HERETO DULY AUTHORIZED
ATTEST:

By                                                 
Name                                            
Title         Secretary                      By_/s/William T. Sobo, Jr.______
(Assistant Secretary)                        Name__William T. Sobo, Jr.______
                                             Title   TREASURER 
                                             HERETO DULY AUTHORIZED
                                             (CORPORATE SEAL)

<TABLE> <S> <C>

<ARTICLE> 5
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
<S>                                           <C>
<PERIOD-TYPE>                                 3-MOS
<FISCAL-YEAR-END>                                         JUN-30-1999
<PERIOD-START>                                            OCT-01-1998
<PERIOD-END>                                              DEC-31-1998
<EXCHANGE-RATE>                                                     1
<CASH>                                                         62,973
<SECURITIES>                                                   17,850
<RECEIVABLES>                                                 137,805
<ALLOWANCES>                                                    4,606
<INVENTORY>                                                         0
<CURRENT-ASSETS>                                              233,813
<PP&E>                                                         86,071
<DEPRECIATION>                                                 40,670
<TOTAL-ASSETS>                                                286,476
<CURRENT-LIABILITIES>                                         103,499
<BONDS>                                                             0
<COMMON>                                                          248
                                               0
                                                         0
<OTHER-SE>                                                    179,925
<TOTAL-LIABILITY-AND-EQUITY>                                  286,476
<SALES>                                                             0
<TOTAL-REVENUES>                                               87,855
<CGS>                                                               0
<TOTAL-COSTS>                                                  58,890
<OTHER-EXPENSES>                                               21,061
<LOSS-PROVISION>                                                    0
<INTEREST-EXPENSE>                                                  0
<INCOME-PRETAX>                                                 7,904
<INCOME-TAX>                                                    2,763
<INCOME-CONTINUING>                                                 0
<DISCONTINUED>                                                      0
<EXTRAORDINARY>                                                     0
<CHANGES>                                                           0
<NET-INCOME>                                                    5,141
<EPS-PRIMARY>                                                    0.21
<EPS-DILUTED>                                                    0.21
        

</TABLE>


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