SPSS INC
10-Q, 1997-05-15
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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

                QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                  For the Quarterly Period Ended March 31, 1997



                        Commission file Number: 33-64732


                                    SPSS Inc.

             (Exact name of registrant as specified in its charter)



                      Delaware                          36-2815480
          (State or other jurisdiction         (IRS Employer Identification No.)
     of incorporation or organization)

                 444 N. Michigan Avenue, Chicago, Illinois 60611
              (Address of principal executive offices and zip code)


        Registrant's telephone number including area code: (312)329-2400


         Indicate by check mark whether the registrant (1) has filed all reports
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 filing requirements
for the past 90 days. Yes X No

         As of  May 1,  1997,  there  were  7,740,186  shares  of  common  stock
outstanding, par value $.01, of the registrant.





<PAGE>



                                    SPSS Inc.
                                    Form 10-Q
                          QUARTER ENDED MARCH 31, 1997

                                      INDEX

PART I - FINANCIAL INFORMATION                                           PAGE

 Item 1.           Financial Statements

                   Independent Auditors' Review Report                      3

                   Consolidated Balance Sheets
                   as of December 31, 1996 and
                   March 31, 1997 (unaudited)                               4

                   Consolidated Statements of Income
                   for the three months ended March 31, 1996
                   (unaudited) and 1997 (unaudited)                         5

                   Consolidated Statements of Cash Flows
                   for the three months ended March 31, 1996
                   (unaudited) and 1997 (unaudited)                         6

                   Notes to Consolidated Financial Statements               7

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


PART II - OTHER INFORMATION

 Item 1.           Legal Proceedings                                       11

 Item 6.           Exhibits and Reports on Form 8-K                        11



<PAGE>


Item 1.           FINANCIAL STATEMENTS


                       Independent Auditors' Review Report


The Board of Directors
SPSS Inc.:

We have reviewed the consolidated balance sheet of SPSS Inc. and subsidiaries as
of March 31, 1997,  and the related  consolidated  statements of income and cash
flows  for the  three-month  periods  ended  March  31,  1996  and  1997.  These
consolidated   financial  statements  are  the  responsibility  of  SPSS  Inc.'s
management.

We conducted our review in accordance with standards established by the American
Institute  of  Certified  Public  Accountants.  A review  of  interim  financial
information consists principally of applying analytical  procedures to financial
data and making  inquiries of persons  responsible  for financial and accounting
matters. It is substantially less in scope than an audit conducted in accordance
with  generally  accepted  auditing  standards,  the  objective  of which is the
expression of an opinion regarding the financial statements taken as a whole.
Accordingly, we do not express such an opinion.

Based on our review, we are not aware of any material  modifications that should
be made to the consolidated  financial statements referred to above, for them to
be in conformity with generally accepted accounting principles.

We have  previously  audited,  in accordance  with generally  accepted  auditing
standards,  the  consolidated  balance sheet of SPSS Inc. and subsidiaries as of
December  31,  1996,  and  the  related   consolidated   statements  of  income,
stockholders'  equity,  and cash flows for the year then  ended  (not  presented
herein);  and in our report dated February 19, 1997, we expressed an unqualified
opinion  on  those  consolidated  financial  statements.  In  our  opinion,  the
information  set  forth in the  accompanying  consolidated  balance  sheet as of
December 31, 1996, is fairly stated,  in all material  respects,  in relation to
the consolidated balance sheet from which it has been derived.


                                                       /s/ KPMG Peat Marwick LLP
                                                           KPMG Peat Marwick LLP

Chicago, Illinois
April 29, 1997


<PAGE>



                           SPSS Inc. and Subsidiaries
                           CONSOLIDATED BALANCE SHEETS
                      (in thousands, except for share data)
<TABLE>
<CAPTION>

                                                                             December 31,           March 31,
                                                                                 1996                  1997
                                                                           -----------------     -----------------
                                                                                                   (unaudited)
CURRENT ASSETS:
<S>                                                                      <C>                   <C>               
          Cash and cash equivalents                                      $           12,621    $           12,110
          Accounts receivable, net of allowances                                     17,746                19,600
          Inventories                                                                 1,900                 1,564
          Prepaid expenses and other current assets                                   1,500                 1,538
                                                                           -----------------     -----------------

            Total current assets                                                     33,767                34,812
                                                                           -----------------     -----------------

EQUIPMENT AND LEASEHOLD IMPROVEMENTS, at cost:
          Furniture, fixtures and office equipment                                    3,979                 3,929
          Computer equipment and software                                            12,228                12,464
          Leasehold improvements                                                      1,593                 1,761
                                                                           -----------------     -----------------

                                                                                     17,800                18,154
          Less accumulated depreciation and amortization                             12,261                12,593
                                                                           -----------------     -----------------

Net equipment and leasehold improvements                                              5,539                 5,561
                                                                           -----------------     -----------------

Capitalized software development costs,
  net of accumulated amortization                                                     7,036                 7,360
Goodwill, net of accumulated amortization                                             2,173                 2,104
Deferred income tax assets                                                            1,245                 1,276
Other assets                                                                          2,275                 2,169
                                                                           -----------------     -----------------

                                                                         $           52,035    $           53,282
                                                                           =================     =================

CURRENT LIABILITIES:
          Notes payable                                                  $               --    $            1,496
          Accounts payable                                                            3,783                 4,915
          Accrued royalties                                                             520                   400
          Accrued rent                                                                  651                   556
          Other accrued liabilities                                                   7,989                 6,880
          Income taxes and value added taxes payable                                  3,401                 2,012
          Customer advances                                                             121                   140
          Deferred revenues                                                           6,764                 6,114
                                                                           -----------------     -----------------

            Total current liabilities                                                23,229                22,513
                                                                           -----------------     -----------------

Deferred income taxes                                                                 2,245                 2,245
Other noncurrent liabilities                                                             34                    --
                                                                                                        

STOCKHOLDERS' EQUITY:
          Common stock, $.01 par value; 50,000,000 shares
            authorized; 7,726,597 and  7,730,069 shares issued and
            outstanding in 1996 and 1997, respectively                                   77                    77
          Additional paid-in capital                                                 41,374                41,452
          Cumulative foreign currency translation adjustments                         (612)               (1,199)
          Accumulated deficit                                                      (14,312)              (11,806)
                                                                           -----------------     -----------------

            Total stockholders' equity                                               26,527                28,524
                                                                           -----------------     -----------------

                                                                         $           52,035    $           53,282
                                                                           =================     =================
</TABLE>

          See accompanying notes to consolidated financial statements.



<PAGE>



                                     SPSS Inc. and Subsidiaries
                                 CONSOLIDATED STATEMENTS OF INCOME
                               (in thousands, except for share data)
                                            (unaudited)


<TABLE>
<CAPTION>
                                                                           Three Months Ended
                                                                                March 31,
                                                                     --------------------------------

                                                                         1996              1997
                                                                     --------------    --------------

Net revenues:
<S>                                                                <C>               <C>            
      Desktop products                                             $        15,962   $        17,911
      Large System products                                                  2,855             2,354
      Other products and services                                            1,302             1,929
                                                                     --------------    --------------

Net revenues                                                                20,119            22,194
Cost of revenues                                                             2,007             2,253
                                                                     --------------    --------------

Gross profit                                                                18,112            19,941
                                                                     --------------    --------------

Operating expenses:
      Sales and marketing                                                   10,593            10,857
      Product development                                                    3,033             3,699
      General and administrative                                             1,691             1,749
                                                                     --------------    --------------

Operating expenses                                                          15,317            16,305

Operating income                                                             2,795             3,636
                                                                     --------------    --------------
Other income (expense):
      Net interest income                                                      122               127
      Other (expense)                                                         (50)              (22)
                                                                     --------------    --------------

Other income (expense)                                                          72               105
                                                                     --------------    --------------

Income before income taxes                                                   2,867             3,741
Income tax expense                                                           1,000             1,235
                                                                     --------------    --------------

Net income                                                         $         1,867   $         2,506
                                                                     ==============    ==============

Net earnings per share                                             $          0.23   $          0.29
                                                                     ==============    ==============

Shares used in computing net earnings per share                          8,249,701         8,605,248
                                                                     ==============    ==============
</TABLE>


                    See accompanying notes to consolidated financial statements.




<PAGE>



                                                SPSS Inc. and Subsidiaries
                                          CONSOLIDATED STATEMENTS OF CASH FLOWS
                                                      (in thousands)
                                                       (unaudited)
<TABLE>
<CAPTION>

                                                                                         Three Months Ended
                                                                                             March 31,
                                                                                    -----------------------------
                                                                                        1996           1997
                                                                                    -------------  --------------

          Cash flows from operating activities:
<S>                                                                               <C>            <C>            
              Net income                                                          $        1,867 $         2,506
              Adjustments to reconcile net income to net cash
                (used in) provided by operating activities:
                    Depreciation and amortization                                          1,133           1,330
                    Changes in assets and liabilities, net of effects of
                        acquisitions:
                       Deferred income taxes                                               --               (31)
                       Accounts receivable                                                 (127)         (1,854)
                       Inventories                                                           252             336
                       Accounts payable                                                      209           1,132
                       Accrued royalties                                                     (2)           (120)
                       Accrued expenses                                                  (2,401)         (1,180)
                       Accrued income taxes                                                (552)         (1,243)
                       Other                                                                  53         (1,807)
                                                                                    -------------  --------------

          Net cash (used in) provided by operating activities                                432           (931)
                                                                                    -------------  --------------

          Cash flows from investing activities:
               Capital expenditures, net                                                   (471)           (354)
               Capitalized software development costs                                      (350)           (775)
               Net payments for acquisitions                                              --                (24)
                                                                                    -------------  --------------

          Net cash used in investing activities                                            (821)         (1,153)
                                                                                    -------------  --------------

          Cash flows from financing activities:
               Net borrowings (repayments) on notes payable                                 (75)           1,495
               Net proceeds from issuance of common stock                                    232              23
               Income tax benefit from stock option exercises                                  4              55
                                                                                    -------------  --------------

          Net cash provided by financing activities                                          161           1,573
                                                                                    -------------  --------------

          Net change in cash                                                               (228)           (511)
          Cash at beginning of period                                                     11,175          12,621
                                                                                    -------------  --------------
          Cash at end of period                                                   $       10,947 $        12,110
                                                                                    =============  ==============

          Supplemental disclosures of cash flow information:
               Interest paid                                                      $           12 $             8
               Income taxes paid                                                             306           2,749
                                                                                    =============  ==============
</TABLE>

          See accompanying notes to consolidated financial statements.


<PAGE>

                           SPSS Inc. and Subsidiaries


                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


Note 1 - Basis of Presentation

         The accompanying  unaudited interim  consolidated  financial statements
reflect all adjustments which, in the opinion of management, are necessary for a
fair  presentation  of the results of the interim  periods  presented.  All such
adjustments are of a normal recurring nature.

         These consolidated  financial  statements should be read in conjunction
with the Company's audited  consolidated  financial statements and notes thereto
for the year ended December 31, 1996, included in the Company's Annual Report on
Form 10-K filed with the Securities and Exchange Commission.


Note 2 - Net Earnings Per Share

         Net earnings per common and common  equivalent  share has been computed
using the  weighted  average  number of common and  dilutive  common  equivalent
shares  outstanding for each period (8,249,701 shares for the three months ended
March 31, 1996 and 8,605,248 shares for the comparable  period in 1997).  Common
equivalent  shares consist of the shares issuable upon exercise of stock options
(using the treasury stock method).



<PAGE>



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

         The following table sets forth the  percentages  that selected items in
the Consolidated Statements of Income bear to net revenues:

                                                 Percentage of Net Revenues
                                               --------------------------------
                                                     Three Months Ended
                                                          March 31,
                                               --------------------------------
                                                   1996              1997
                                               --------------    --------------

        Statement of Income Data:
        Net revenues:
                                                     
             Desktop products                            79%               81%
             Large System products                       14%               10%
             Other products and services                  7%                9%
                                               --------------    --------------

        Net revenues                                    100%              100%
        Cost of revenues                                 10%               10%
                                               --------------    --------------

        Gross profit                                     90%               90%
                                               --------------    --------------

        Operating expenses:
             Sales and marketing                         53%               49%
             Product development                         15%               17%
             General and administrative                   8%                8%
                                               --------------    --------------

        Operating expenses                               76%               74%
                                               --------------    --------------

        Operating income                                 14%               16%
        Other income (expense):
             Net interest income                          --                1%
                                                          
             Other                                        --                --
                                               --------------    --------------

        Other income (expense)                            --                1%
                                               --------------    --------------

        Income before income taxes                       14%               17%
        Income tax expense                                5%                6%
                                               --------------    --------------

        Net income                                        9%               11%
                                               ==============    ==============




<PAGE>


Comparison  of Three Months Ended March 31, 1996 to Three Months Ended March 31,
1997.

Net Revenues. Net Revenues were $20,119,000 and $22,194,000 for the three months
ended March 31, 1996 and 1997,  respectively,  an increase of 10%. Revenues from
products  designed  for  desktop  computers   ("Desktop   products")   increased
$1,949,000 (12%) over the  corresponding  period in 1996. In addition,  revenues
from  annual  license  renewals  of  Desktop  products  increased  by  $570,000,
reflecting a $769,000  increase in annual license renewals for SPSS for Windows.
Revenues  from  products  designed  for  mainframes,   minicomputers,  and  UNIX
workstations  ("Large  System  products")  decreased 18% over the  corresponding
period in 1996.  Other products and services  revenues  increased 48% due to the
increase in training revenue and revenues received from publications and student
products.  Revenues  for the first  quarter of 1997 were  adversely  effected by
changes in foreign currency exchange rates.

Cost of Revenues. Cost of revenues consists of costs of goods sold, amortization
of capitalized  software development costs, and royalties paid to third parties.
Cost of revenues was  $2,007,000  and $2,253,000 in the three months ended March
31, 1996 and 1997, respectively, an increase of 12%. Such costs increased due to
higher  sales  levels,  higher  royalties  paid  to  third  parties  and  higher
amortization  amounts of  capitalized  software and product  translations.  As a
percentage of net revenues, cost of revenues remained constant at 10%.

Sales  and  Marketing.   Sales  and  marketing  expenses  were  $10,593,000  and
$10,857,000 in the three months ended March 31, 1996 and 1997, respectively,  an
increase of 2%. This  increase  was due to the  expansion  of the  domestic  and
international  sales organizations and increased media placement and promotional
costs. Such expenses decreased from 53% to 49% of net revenues.

Product Development. Product development expenses were $3,033,000 and $3,699,000
(net of capitalized  software development costs of $283,000 and $403,000) in the
three months ended March 31, 1996 and 1997, respectively, an increase of 22%. In
the  corresponding   periods  in  1996  and  1997,  the  Company's  expense  for
amortization of capitalized software and product translations,  included in cost
of revenues,  was $338,000 and $459,000,  respectively.  The increase in product
development  expenses was  primarily due to salary  increases,  additions to the
product development staff, recruitment expense, and network services expense. As
a percentage of net revenues, product development expenses increased from 15% to
17%, respectively.

General and Administrative.  General and administrative expenses were $1,691,000
and $1,749,000 in the three months ended March 31, 1996 and 1997,  respectively,
an increase of 3%. Such expenses increased  primarily due to increases in salary
and  salary  related  expenses,   recruiting  expense,  and  consulting  charges
partially  offset by a reduction in bad debt  expense.  As a  percentage  of net
revenues, general and administrative expenses remained constant at 8%.

Net Interest Income.  Net interest income was $122,000 and $127,000 in the three
months  ended  March 31,  1996 and 1997,  respectively,  an increase of 4%. This
favorable  variance  was  primarily  due to the  interest  earned on  short-term
investments.

<PAGE>

Other  (Expense).  Other  (expense)  was  ($50,000)  and ($22,000) for the three
months ended March 31, 1996 and 1997, respectively. Such transactions consist of
foreign currency transaction losses.

Provision  for Income  Taxes.  Provision  for income  taxes was  $1,000,000  and
$1,235,000  for the three  months  ended March 31, 1996 and 1997,  respectively,
reflecting effective tax rates of 34.8% and 33.0%, respectively.

Liquidity and Capital Resources

The  Company  had  debt  totaling  $1,495,000  as of  March  31,  1997  and held
approximately  $12,110,000 in cash and cash equivalents.  The Company's Japanese
subsidiary borrowed Y200 million (approximately $1,627,000) in a short term bank
loan during the quarter. The loan is unsecured and has no restrictions as to its
use.  The loan bears  interest at an annual rate of .95% and requires a lump sum
repayment  of Y60 million in April 1997 and monthly  repayments  of Y25 million.
The loan will be completely repaid in August 1997. The proceeds of the loan were
used to take advantage of foreign  exchange option contracts (Y140 million) that
came due in the quarter.  Net of repayments,  the balance of the loan at the end
of the quarter was Y175 million.

Funds in the first three months of 1997 were used in operations and for payments
related to the  Company's  acquisition  of Clear  Software and Jandel  Software.
Capital  expenditures  were  also made for  furniture,  computer  equipment  and
leasehold improvements for newly hired employees and product development.

The Company currently has an available  $5,000,000 unsecured line of credit with
Bank of America N.T.S.A. ("B of A"), under which borrowings bear interest at the
reference  rate  (currently  8.50%).  As of March 31,  1997,  the Company had no
borrowings under this line of credit. The Company's credit agreement with B of A
requires  the  Company to comply with  certain  specified  financial  ratios and
tests,  and,  among other things,  restricts  the  Company's  ability to (i) pay
dividends  or make  distributions,  (ii) incur  additional  indebtedness,  (iii)
create  liens  on  assets,  (iv)  make  investments,   (v)  engage  in  mergers,
acquisitions  or  consolidations,  (vi) sell assets and (vii)  engage in certain
transactions with affiliates.

The  Company  anticipates  that  amounts  available  under  its line of  credit,
existing  sources of liquidity and cash flows  generated from operations will be
sufficient to fund the Company's  operations  and capital  requirements  for the
foreseeable  future.  However,  no assurance can be given that changing business
circumstances  will not require  additional  capital  for  reasons  that are not
currently  anticipated  or that the  necessary  additional  capital will then be
available to the Company on favorable terms, or at all.


<PAGE>



International Operations

Significant growth in the Company's  international  operations  continued during
the first quarter of 1997. The portion of revenues attributable to international
operations  was  negatively  affected  by changes in foreign  currency  exchange
rates. Net corporate  revenues increased 10% in the three months ended March 31,
1997, when compared to the three months ended March 31, 1996. Net of the effects
of changes in foreign currency rates, the increase would have been approximately
14%.

Safe Harbor

         "Safe Harbor" Statement under the Private Securities  Litigation Reform
Act of 1995: With the exception of historical information, the matters discussed
in this Form 10-Q include  forward-looking  statements  that  involve  risks and
uncertainties  described in this document,  and the Company's other filings with
the Securities and Exchange  Commission  that could cause actual results to vary
materially from the future results indicated in such forward-looking statements.
No assurance can be given that the future results covered by the forward-looking
statements  will be achieved.  Other factors could also cause actual  results to
vary  materially  from the  future  results  indicated  in such  forward-looking
statements.


                           PART II - OTHER INFORMATION

Item 1.           Legal Proceedings

                  Currently there are no material  pending legal  proceedings to
                  which the Company or any of its  subsidiaries is a party or to
                  which any of their property is subject.

Item 6.           Exhibits and Reports on Form 8-K.

         (a)      Exhibits (Note:  Management contracts and compensatory plans 
                  or arrangements are underlined in the following list.)
                                                                  Incorporation
Exhibit                                                            by Reference
Number   Description of Document                                 (if applicable)

 2.1     Agreement and Plan of Merger among SPSS Inc.,                   @2.1
         SPSS ACSUB, Inc., Clear Software, Inc. and the
         shareholders named therein, dated September 23, 1996.

 2.2     Agreement and Plan of Merger among SPSS Inc.,               @@Annex A
         SPSS Acquisition Inc. and Jandel Corporation,
         dated October 30, 1996.

<PAGE>

 3.1     Certificate of Incorporation of the Company                  *   3.2

 3.2     By-Laws of the Company                                       *   3.4

 4.1     Credit Agreement                                            **   4.1

 4.2     First Amendment to Credit Agreement

10.1     Employment Agreement with Jack Noonan                        +  10.1
         -------------------------------------

10.2     Agreement with Valletta                                     **  10.2
         -----------------------

10.3     Agreement between the Company and                           **  10.5
         Prentice-Hall

10.4     Software Distribution Agreement between                     **  10.6
         the Company and IBM

10.5     HOOPS Agreement                                             **  10.7

10.6     Stockholders Agreement                                       *  10.8

10.7     Agreements with CSDC                                         *  10.9

10.8     Amended 1991 Stock Option Plan                               *  10.10
         ------------------------------

10.9     SYSTAT, INC. Asset Purchase Agreement                         ++10.9

10.10    Employment Agreement with Leland Wilkinson                    ++10.10
         ------------------------------------------

10.11    1994 Bonus Compensation                                      +++10.11
         -----------------------

10.12    Lease for Chicago, Illinois Office                           +++10.12

10.13    Amendment to Lease for Chicago, Illinois Office              +++10.13

10.14    1995 Equity Incentive Plan                                    - 10.14
         --------------------------

10.15    1995 Bonus Compensation                                      -- 10.15
         -----------------------

10.16    Lease for Chicago, Illinois Office                           -- 10.16

10.17    Amended and Restated 1995 Equity Incentive Plan              xxx10.17
         -----------------------------------------------

10.18    1996 Bonus Compensation                                        &10.18
         -----------------------

<PAGE>

10.19    Software Distribution Agreement between the                    &10.19
         Company and Banta Global Turnkey

10.20    Lease for Chicago, Illinois Office in Sears Tower

15.1     Acknowledgment of Independent Certified
         Public Accountants Regarding Independent
         Auditors' Review Report

27.1     Financial Data Schedule
- -------------------------------


@    Previously  filed with the Report on Form 8-K of SPSS Inc., dated September
     26, 1996,  filed on October 11, 1996, as amended on Form 8-K/A-1,  filed on
     November 1, 1996.

@@   Previously filed with Amendment No. 1 to Form S-4 Registration Statement of
     SPSS Inc., filed on November 7, 1996.

@@@  Previously  filed with the Annual  Report on Form 10-K of SPSS Inc. for the
     Year ended December 31, 1996 (Registration No. 33-64732).

x    Previously  filed with the  Quarterly  Report on Form 10-Q of SPSS Inc. for
     the Quarterly Period Ended September 30, 1993.

xx   Previously  filed with the Annual  Report of Form 10-K of SPSS Inc. for the
     Year ended December 31, 1995 (Registration No. 33-64732).

xxx  Previously  filed with the  Quarterly  Report on Form 10-Q of SPSS Inc. for
     the Quarterly Period Ended September 30, 1993 (Registration No. 0-22194).

*    Previously filed with Amendment No. 2 to Form S-1 Registration Statement of
     SPSS Inc. filed on August 4, 1993 (Registration No. 33-64732).

**   Previously filed with Amendment No. 1 to Form S-1 Registration Statement of
     SPSS Inc. filed on July 23, 1993 (Registration No. 33-64732).

+    Previously  filed  with the Form S-1  Registration  Statement  of SPSS Inc.
     filed on June 22, 1993 (Registration No. 33-64732).

++   Previously  filed  with the Form S-1  Registration  Statement  of SPSS Inc.
     filed on December 5, 1994 (Registration No. 33-86858).

<PAGE>

+++  Previously  filed with the Annual  Report on Form 10-K of SPSS Inc. for the
     Year Ended December 31, 1994 (Registration No. 33-64732).

- -    Previously filed with the Company's 1995 Proxy Statement.

- --   Previously filed with the SPSS' Annual Report on Form 10-K of SPSS Inc. for
     the Year Ended December 31, 1995 (Registration No. 33-64732).

&    Previously  filed with the Annual  Report on Form 10-K of SPSS Inc. for the
     Year ended December 31, 1996 (Registration No. 33-64732).

         (b)      Reports on Form 8-K

                  There was one report on Form 8-K filed by the  Company  during
                  the fiscal quarter ended March 31, 1996.

             (i)  Report on Form 8-K,  dated  February 19, 1997,  filed on March
                  10,  1997.  The  Report  on Form 8-K  reported  the  Company's
                  revenues and  earnings  for the fourth  quarter and year ended
                  December 31, 1996. A news release and financials were attached
                  and incorporated by reference.




<PAGE>



                                   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.


                                  SPSS Inc.



Date:             May 9, 1997     By:  /s/ Jack Noonan
                                  --------------------
                                   Jack Noonan
                                   President and Chief Executive Officer


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
this report has been signed by the undersigned, in his capacity as the principal
financial officer of the Registrant.


Date:             May 9, 1997    By:  /s/ Edward Hamburg
                                 -----------------------
                                 Edward Hamburg
                                 Senior Vice-President, Corporate
                                 Operations and Chief Financial Officer




<PAGE>



                                  EXHIBIT INDEX


Exhibit                                                                 Page
Number     Description of Document                                     Number


    10.20           Lease for Chicago, Illinois Office in Sears Tower    18

    15.1            Acknowledgment of Independent Certified
                    Public Accountants Regarding Independent
                    Auditors' Review Report                              38

    27.1            Financial Data Schedule                              39

                                                                         
                                                                                
                                    SUBLEASE                                    
                                                                                
                                                                                
1. Parties. This Sublease, dated _______________,  1997, is made between Ernst &
Young  U.S.  LLP,  a  limited  liability  partnership   registered  in  Delaware
("Sublandlord"), and SPSS Inc., a Delaware corporation("Subtenant").            
                                                                                
2. Master  Lease.  Sublandlord  is the tenant under a lease dated  September 25,
1991 (as  amended on March 2, 1992,  July 24, 1992 and July 28,  1992),  wherein
Tower  Leasing,  Inc.  successor  in interest to ST  Holdings,  Inc., a Delaware
corporation ("Master Landlord") leases to Sublandlord certain premises described
as  approximately  352,356 square feet in that certain building (the "Building")
commonly  known as Sears Tower at 233 South Wacker Drive in the City of Chicago,
State of Illinois (the "Master  Premises").  Such lease,  as amended,  is herein
referred to as the "Master Lease" is attached hereto as EXHIBIT A.              
                                                                                
3.       Premises.                                                              
                                                                                
         3.1 Initial Occupancy; Add-On Premises. Sublandlord hereby subleases to
Subtenant on the terms and  conditions  set forth in this  Sublease a portion of
the Master Premises  consisting of approximately  20,000 square feet on the 11th
floor of the Building (referred to herein as the "Initial Premises" or, together
with  any  other  space  from  time to time  demised  hereby,  the  "Premises").
Effective  February 1, 1998  (herein the "Add-On  Date") there shall be added to
the Premises,  without  notice or further act by  Sublandlord  or  Subtenant,  a
portion of the Master Premises,  consisting of approximately  20,000 square feet
on the 12th floor of the Building (herein referred to as the "Add-On Premises").
Subtenant shall designate the exact location of the Initial  Premises and of the
Add-On  Premises  in exhibits to be  incorporated  into this  Sublease by way of
amendments  (the  "Initial  Premises  Amendment"  and  the  "Add-On  Amendment",
respectively). The Initial Premises Amendment shall be executed and delivered by
Subtenant to  Sublandlord  as soon as  reasonably  possible  after the execution
hereof,  the Add-On  Amendment  shall be executed and  delivered by Subtenant to
Sublandlord prior to November 1, 1997.                                        
                                                                                
         3.2  Expansion  Right.  At any time and from  time to time on or before
November  1,  1998,  upon at  least  five  (5)  days  prior  written  notice  to
Sublandlord,  Subtenant  shall have the right to  exercise  the option to expand
into all or any part of the remainder  portion of the 11th and 12th floors which
is not part of the  Premises  subleased  by  Subtenant  pursuant  to Section 3.1
hereunder (the "Remainder  Portion").  In Subtenant's written notice of exercise
of its option to sublease all or any part of the Remainder Portion ("Subtenant's
Exercise  Notice")  Subtenant  shall  specify the specific area of the Remainder
Portion as to which Subtenant's  Exercise Notice relates and the date upon which
it  desires  to take  occupancy  of  such  part of the  Remainder  Portion  (the
"Occupancy Date") which shall in no event be earlier than five (5) days from the
date of  Subtenant's  Exercise  Notice.  Upon the Occupancy  Date the area as to
which the  Exercise  Notice  relates  shall be deemed to be part of and included
within the "Premises" subleased hereunder.  In all events, to the extent that on
November  1,  1998  there is any  part  (including  the                         
                                                                                
<PAGE>                                                                          
                                                                                
whole thereof) of the Remainder Portion which has not been previously  subleased
by Subtenant pursuant to the foregoing expansion  provisions of this Section 3.2
or pursuant to Section 3.3.1,  such  unsubleased  part of the Remainder  Portion
shall be  deemed to  constitute  part of and be  included  within  the  Premises
subleased  hereunder  so that as of  November  1,  1998  the  Premises  shall be
comprised  of the entire  11th and 12th  floors of the  Building  consisting  of
approximately 99,444 rentable square feet.                                      
                                                                                
         3.3      Actual Occupancy.                                             
                                                                                
                  3.3.1  Notwithstanding  the  provisions of Section 3.2 hereof,
but subject to the  provisions of Section  3.3.2,  to the extent that  Subtenant
actually occupies or in any manner uses any portion of the Remainder Portion for
business  operations,  storage or placement of personnel,  whether  temporary or
permanent,  such use shall  cause such part of the  Remainder  Portion to become
part of the Premises for all purposes of this  Sublease as though  Subtenant had
exercised  its option to expand  into such space and  incorporate  it within the
Premises in accordance with the provisions of Section 3.2.                      
                                                                                
                  3.3.2  Subtenant,   its  agents,   employees  contractors  and
subcontractors,  shall have the right from time to time to enter upon and occupy
(i) all or any portion of the Remainder Portion located on the 11th floor at any
time from and after the  Commencement  Date for the purpose of constructing  the
"First Phase" of "Subtenant's Work" as described in Section 34.1 and (ii) all or
any portion of the Remainder  Portion located on the 12th floor at any time from
and after the Add-On Date for the purpose of constructing  the "Second Phase" of
Subtenant's  Work as described in Section 34.1. Such entry upon and occupancy of
all or any portion of the Remainder Portion for such construction purposes shall
not  constitute  or be deemed to be the addition of such space to the  Premises.
However,  such entry and occupancy shall be deemed to be under all of the terms,
covenants,  conditions and provisions of this Sublease  except those relating to
the  payment  of Base  Rent,  other  rent and  Operating  Costs,  and  expressly
including,  without  limitation,  Section 11 hereof  (relating to utilities  and
services),  Section 17 hereof  (relating  to  insurance)  and  Section 18 hereof
(relating to indemnity).                                                        
                                                                                
4. Warranty by  Sublandlord.  Sublandlord  warrants and  represents to Subtenant
that the Master  Lease is in full  force and effect and has not been  amended or
modified except as expressly set forth herein, that, to Sublandlord's knowledge,
Sublandlord  is not in default or breach of any of the  provisions of the Master
Lease, and that, to Sublandlord's  knowledge,  Master Landlord is not in default
or breach of any of the provisions of the Master Lease.                         
                                                                                
5. Term. The term ("Term") of this Sublease  shall  commence (the  "Commencement
Date") on the latest of: (i) April 1, 1997,  (ii) ten (10)  business  days after
the Required  Consent has been obtained in writing in accordance with Section 32
hereof,  or (iii) the date  Subtenant  has  executed and  delivered  the Initial
Premises  Amendment to  Sublandlord,  and end on May 31, 2012 (the  "Termination
Date"),  unless otherwise sooner terminated in accordance with the provisions of
this Sublease. In the event the Term commences on a date other than the date set
forth in clause  (i),  Sublandlord  and  Subtenant  shall  execute a  memorandum
setting  forth the actual date                                                  
                                                                                
<PAGE>                                                                          
                                                                                
of  commencement  of the  Term.  Possession  of the  Initial  Premises  shall be
delivered to Subtenant on the  Commencement  Date;  and possession of the Add-On
Premises  shall be delivered to  Subtenant on the Add-On Date,  such  deliveries
being  subject to delays  for  casualties.  Notwithstanding  the  foregoing,  if
Sublandlord  has not delivered  possession of the Initial  Premises to Subtenant
within ten (10) business days after the date that Master  Landlord has delivered
to Sublandlord its written consent to this Sublease,  Subtenant may give written
notice to  Sublandlord of  Subtenant's  intention to cancel this Sublease.  Such
notice shall set forth an effective  date for such  cancellation  which shall be
the first  business  day  after  delivery  of such  notice  to  Sublandlord.  If
Sublandlord  delivers  possession to Subtenant on or before such effective date,
this Sublease  shall remain in full force and effect.  If  Sublandlord  fails to
deliver  possession to Subtenant on or before such effective date, this Sublease
shall be canceled, in which case any consideration  previously paid by Subtenant
to Sublandlord on account of this Sublease shall be returned to Subtenant,  this
Sublease  shall  thereafter  be of no further force or effect,  and  Sublandlord
shall  have no  further  liability  to  Subtenant  on  account  of such delay or
cancellation.                                                                   
                                                                                
6.       Rent.                                                                  
                                                                                
         6.1 Base Rent.  Subtenant shall pay to Sublandlord monthly base rent in
accordance with the schedule set forth hereinbelow,  without deduction,  setoff,
notice,  or demand  (except as  provided in Section  34.4 below with  respect to
Subtenant's set-off right in respect of the Work Allowance),  at the address set
forth in Section 12, or at such other place as Sublandlord  shall designate from
time to time by notice to Subtenant.  Monthly installments of base rent shall be
payable in advance,  on the first day of each calendar  month of the Term on and
after November 1, 1998.  Subtenant  shall pay to  Sublandlord  upon execution of
this  Sublease the amount of  $145,022.50  as base rent for November 1, 1998. No
base rent shall be payable with respect to any period prior to November 1, 1998,
subject to Section 35  hereof.  If the  payment of base rent  begins or the Term
ends on a day other than the first or last day of a month, the base rent for the
partial months shall be prorated on a per diem basis.                           
                                                                                
Rent Schedule                                                                   
                                                                                
- ---------------------------------- -----------------------------------------    
                                                                                
 Monthly Base Rent                                 Payment Period               
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $145,022.50                                  11/1/98 - 10/31/99             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $149,166.00                                  11/1/99 - 10/31/00             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $153,309.50                                  11/1/00 - 10/31/01             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $157,453.00                                  11/1/01 - 10/31/02             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $161,596.50                                  11/1/02 - 10/31/03             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $165,740.00                                  11/1/03 - 10/31/04             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
<PAGE>                                                                          
                                                                                
    $169,883.50                                  11/1/04 - 10/31/05             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $174,027.00                                  11/1/05 - 10/31/06             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $178,170.50                                  11/1/06 - 10/31/07             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $182,314.00                                  11/1/07 - 10/31/08             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $186,457.50                                  11/1/08 - 10/31/09             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $190,601.00                                  11/1/09 - 10/31/10             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $194,744.50                                  11/1/10 - 10/31/11             
- ---------------------------------- -----------------------------------------    
- ---------------------------------- -----------------------------------------    
                                                                                
    $198,888.00                                  11/1/11 - 5/31/12              
- ---------------------------------- -----------------------------------------    
                                                                                
         6.2 Operating  Costs.  The Master Lease requires  Sublandlord to pay to
Master  Landlord a portion of the expenses of owning and  operating the Building
and the land upon which it is situated ("Operating Costs"),  including,  but not
limited to, maintenance and repair, taxes, utilities, and insurance, all as more
particularly  described  in  Section 3 of the  Master  Lease.  Commencing  as of
January 1,  1998,  Subtenant  shall be  responsible  for,  as  additional  rent,
Subtenant's  Proportionate Share of the amounts payable by Sublandlord under the
Master Lease as Operating  Costs  incurred for the Master  Premises in excess of
those incurred for calendar year 1997.  Subtenant  shall have no  responsibility
for the payment of Operating Costs in 1997. The Operating Costs shall be payable
by  Subtenant to  Sublandlord  hereunder  as and when such  Operating  Costs are
payable by Sublandlord to Master  Landlord  pursuant to the Master Lease. If the
Master Lease provides for the payment by  Sublandlord of Operating  Costs on the
basis  of  estimates  thereof,  then,  Subtenant's  proportionate  share of such
estimates  shall be payable as and when  estimates  are  payable by  Sublandlord
under the Master Lease. Notwithstanding the two immediately foregoing sentences,
payments  of  Subtenant's  Proportionate  Share of  Operating  Costs which would
otherwise be due from January 1, 1998 through October 31, 1998, shall accrue and
not be due  and  payable  until  November  1,  1998.  When  adjustments  between
estimated  and  actual  Operating  Costs are made under the  Master  Lease,  the
obligations of Sublandlord  and Subtenant  hereunder shall be adjusted in a like
manner;  and if any such adjustment  shall occur after the expiration or earlier
termination of the Term, then the obligations of Sublandlord and Subtenant under
this  Section 6.2 shall  survive such  expiration  or  termination.  Sublandlord
shall,  upon  request  by  Subtenant,  furnish  Subtenant  with  copies  of  all
statements  submitted by Master Landlord of actual or estimated  Operating Costs
during the Term.                                                                
                                                                                
                  As used herein,  "Subtenant's  Proportionate Share" shall mean
the ratio, expressed as a percentage to the nearest 1/100 of one percent, of the
total rentable  square footage of the Premises  demised hereby from time to time
to the total rentable  square  footage of the Master  Premises from time to time
leased to Sublandlord  pursuant to the Master Lease.  It is hereby  acknowledged
and agreed that as of the date hereof the Master  Premises leased to Sublandlord
pursuant to the Master Lease  consists of all of the 11th through 17th floors of
the Building and contains  approximately  352,356 rentable square feet and that,
assuming that such Master                                                       
                                                                                
<PAGE>                                                                          
                                                                                
Premises remain leased to Sublandlord as of November 1, 1998,  then  Subtenant's
Proportionate  Share as of  November 1, 1998 shall be 28.22%  (representing  the
ratio of 99,444 to 352,356).                                                    
                                                                                
         6.3  Additional  Rent.  All amounts over and above,  or in addition to,
base rent which are payable by Subtenant to Sublandlord  under the terms of this
Sublease,  including but not limited to the Operating Costs described in Section
6.2, shall be deemed  additional rent hereunder and  Sublandlord  shall have all
the rights and remedies in the event of the nonpayment  thereof as it would have
had in the event of the nonpayment of any installment of base rent.             
                                                                                
7.       Security Deposit.  (Intentionally Deleted)                             
                                                                                
8. Use of the Premises. The Premises shall be used and occupied only for general
offices and/or professional  business purposes consistent with the provisions of
the Master Lease, and for no other use or purpose.                              
                                                                                
9.  Assignment and Subletting.  Except as expressly  provided in this Section 9,
Subtenant  shall not  hypothecate  its interest in or assign this  Sublease,  or
sublet, license or otherwise transfer any interest in the Sublease or all or any
part of the Premises without (i) the prior written consent of Sublandlord, which
consent  shall  not be  unreasonably  withheld  or  delayed,  and (ii) the prior
written  consent of Master  Landlord in accordance with the terms and provisions
of the  Master  Lease.  Subtenant  shall  pay,  within  ten (10) days of written
demand,  any fees or costs payable to Master Landlord under the Master Lease and
Sublandlord's reasonable attorneys' fees incurred in connection with Subtenant's
request   for   consent  to  a  sublease  or   assignment   of  this   Sublease.
Notwithstanding the foregoing, Subtenant may, upon delivery of written notice to
Sublandlord  and  subject to the prior  written  consent of Master  Landlord  in
accordance  with the terms and  provisions  of the  Master  Lease,  assign  this
Sublease  in whole or in part or sublet or  license  all or any  portion  of the
Premises  to any  entity  to which  substantially  all of the  assets,  stock or
business  of  Subtenant  is  transferred  or with which  Subtenant  is merged or
consolidated;  provided that  Subtenant  delivers to  Sublandlord  prior written
notice of the name of any successor  company and a copy of the Master Landlord's
consent  to  such  transfer  of  this  Sublease,  and  any  other  documentation
reasonably  requested  by  Sublandlord,  including a copy of the  assignment  or
sublease document.                                                              
                                                                                
10.      Other Provisions of Sublease.                                          
                                                                                
         10.1 All  applicable  terms  and  conditions  of the  Master  Lease are
incorporated  into and made a part of this Sublease as if  Sublandlord  were the
landlord  thereunder,  Subtenant  the tenant  thereunder,  and the  Premises the
Master Premises,  but  incorporating  such provisions  herein shall not obligate
Sublandlord or be construed as causing Sublandlord to assume or agree to perform
any  obligations  assumed  by the  Master  Landlord  or be  responsible  for any
representations  or  warranties  of  Master  Landlord  under the  Master  Lease.
Notwithstanding  the  foregoing  and subject to the  provisions  of Section 10.2
below,  the following  provisions  shall be deemed deleted from the Master Lease
for the purpose of incorporation herein: 1,2,3, the last sentence of 4.A (except
for the right to use the Premises'  ceiling plenum space and the underfloor duct
system for                                                                      
                                                                                
<PAGE>                                                                          
                                                                                
wiring and  cabling in  accordance  with  Exhibit E and  Section 8 of the Master
Lease),  5, the  proviso at the end of the second  sentence  of 6.A (ii) and the
second  to the last  sentence  of  6.A(ii),  the  references  to 5 years of free
electricity  for incidental  uses in 6.E (i), 6.E (ii),  the second  sentence of
15.D, 15.E (ii) and (iii),  17, the last two sentences of 19.A, 25, 26.J,  26.Q,
26.R,  26.S,  26.T,  26.U,  26.W, 26.Z, the first and the last sentence of 26.V,
26.Y,  26.CC, 27, 28, 29, 30, 31, 32, 33, 34 and 36, and Exhibits E, I, K, L, M,
N, O, P,  Q-1,  Q-2,  Q-3,  Q-4,  Q-5,  Q-6,  and R.  Notwithstanding  any other
provision hereof (i) Subtenant shall only be entitled to abatement of rent under
this  Sublease  pursuant  to  Sections  6.B,  11 and 14 of the  Master  Lease as
incorporated  herein to the extent  Sublandlord  receives  rent  abatement  from
Master Landlord for the Premises pursuant to the terms of the Master Lease, (ii)
only Sublandlord,  as the named tenant under the Master Lease, shall be entitled
to the benefits of 19.A.  (ii),  and (iii) in Sections  26.H,  26.I and 26.X the
references  to  "Landlord"  shall be  deemed to refer  only to Master  Landlord.
Subtenant  assumes  and agrees to perform  the  tenant's  obligations  under the
Master Lease during the Term to the extent that such  obligations are applicable
to the Premises,  except that the obligation to pay "Base Rent" and  "Additional
Rent" to Master  Landlord  under Sections 2 and 3,  respectively,  of the Master
Lease shall be considered performed by Subtenant to the extent and in the amount
base  rent and  Operating  Costs  are paid to  Sublandlord  in  accordance  with
Sections 6.1 and 6.2 of this Sublease.  Subtenant shall not commit or suffer any
act or omission that will violate any of the provisions of the Master Lease.  If
the Master Lease gives  Sublandlord  any right to terminate  the Master Lease in
the event of the  partial  or total  damage,  destruction,  condemnation  of the
Master  Premises or the  Building or  otherwise,  the  exercise of such right by
Sublandlord  shall not constitute a default or breach  hereunder.  To the extent
that the Master Lease  provides for the  abatement of rent and other  charges in
respect  of  the  Premises  in the  event  of  partial  damage,  destruction  or
condemnation,  rent and  other  charges  hereunder  shall be  abated in the same
proportion and for the same time period.                                        
                                                                                
         10.2  Sublandlord and Subtenant agree that the provisions of the Master
Lease  referred to in this Section 10.2 below shall be  incorporated  herein and
applied  to this  Sublease  only to the  extent  specifically  set forth  below,
provided  that  such  incorporation  of  these  provisions  for the  benefit  of
Subtenant  in the manner set forth below is not  violative  of the Master  Lease
and, if required  under the Master  Lease,  is consented to in writing by Master
Landlord:                                                                       
                                                                                
     (i)  With respect to Sublandlord's parking rights under Section 26.Q of the
          Master Lease, Subtenant shall have the right at any time and from time
          to time  during the term of this  Sublease to lease one (1) of the "On
          Site Parking  Spaces" in the Building on the same terms and conditions
          and at the same  cost  (from  time to time)  on which  Sublandlord  is
          entitled to lease such space  under the Master  Lease.  Subtenant  may
          exercise such right to lease,  and may  terminate  any such lease,  by
          delivery of thirty (30) days prior written notice to Sublandlord.     
                                                                                
     (ii) With respect to  Sublandlord's  rights with respect to listings in the
          Building lobby  directories under Section 26.R of the Master Lease, to
          the extent  that Master  Landlord  does not make  comparable  building
          directory  listings  available to Subtenant without cost to Subtenant,
          then  Sublandlord  shall  allocate  to  Subtenant,   without  cost  to
          Subtenant,                                                            
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
          Subtenant's  Proportionate Share (or less, at the option of Subtenant)
          of the directory listing space made available to Sublandlord under the
          Master Lease.                                                         
                                                                                
     (iii)Subtenant  shall be entitled to any penalty  payments paid by Landlord
          to Tenant  pursuant to Section  26.X of the Master Lease in respect of
          curtain  wall  window  breakage   relating  solely  to  the  Premises.
          Sublandlord shall use reasonable due diligence to seek such payment on
          Subtenant's  behalf and shall pay any  amounts  received  from  Master
          Landlord on Subtenant's behalf to Subtenant within thirty (30) days of
          receipt.                                                              
                                                                                
     (iv) With  respect  to  Sublandlord's   rights  to  use  existing  Building
          firestairs  under  Section 26.Z of the Master Lease,  Subtenant  shall
          have the right to use such  stairs  for access  between  11th and 12th
          floors of the Building  pursuant to all the same terms and  conditions
          set forth in Section 26.Z of the Master Lease  including that (a) such
          use  shall  be  subject  to  all  applicable   governmental  laws  and
          regulations  which may, at any time,  prohibit or restrict such usage,
          (b) Subtenant,  at its sole cost and expense,  must install a card key
          or similar access system reasonably acceptable to both Master Landlord
          and  Sublandlord  on the stairwell  side of each door leading into the
          Premises  from  such  stairwells,  (c)  neither  Master  Landlord  nor
          Sublandlord  shall be responsible for any  maintenance,  decorating or
          other improvement of such stairwells,  and such improvements  shall be
          done at Subtenant's  sole expense in accordance with the provisions of
          Section 19 hereof, and (d) Master Landlord and Sublandlord reserve the
          right to establish  such  reasonable  rules and  regulations as may be
          necessary with respect to Subtenant's use thereof.                    
                                                                                
     (v)  To the  extent  Sublandlord  is not  charged  by Master  Landlord  for
          lighting  costs  for the  period  from  January  1 to  April 30 of any
          calendar  year  during the Term  pursuant  to  Section  6.A(ii) of the
          Master  Lease,  Subtenant  shall  similarly  not be  charged  for such
          lighting costs.                                                       
                                                                                
11.  Utilities and Services.  Subtenant  shall be entitled to all those services
and utilities  which the Master  Landlord is required to provide to the Premises
pursuant to Section 6 of the Master  Lease at a cost to be paid by  Subtenant as
of the  Commencement  Date in  accordance  with  Section 6 of the Master  Lease.
Subtenant  shall look solely to the Master  Landlord  for the  provision of such
services and  utilities  and  Sublandlord  shall not be  responsible  for Master
Landlord's  failure to provide  the same.  To the extent  that  Master  Landlord
imposes  additional charges under the Master Lease for any additional service or
utility  provided to the Premises  beyond the basic  services and utilities that
are required to be supplied by the Master  Lease,  including  but not limited to
additional  cleaning and after hours and/or  supplemental HVAC, freight elevator
charges,  Subtenant shall pay for such charges, as additional rent, upon written
demand therefor.                                                                
                                                                                
12.  Notices.  All notices and demands which may be or are required or permitted
to be given by either  party to the other party  hereunder  shall be in writing.
All notices  and demands by  Sublandlord  to  Subtenant  shall be sent by United
States mail,  postage prepaid,  by commercial                                   
                                                                                
<PAGE>                                                                          
                                                                                
overnight  delivery  service  (with  verification  of receipt  requested)  or by
facsimile  transmission  (on business days only) with a confirming copy required
to be sent by U.S.  mail,  addressed to Subtenant  at the  Premises,  and to the
address  hereinbelow,  or to such other place as Subtenant may from time to time
designate  in a notice to  Sublandlord.  All notices and demands by Subtenant to
Sublandlord shall be sent by United States mail, postage prepaid,  by commercial
overnight  delivery  service  (with  verification  of receipt  requested)  or by
facsimile  transmission  (on business days only) with a confirming copy required
to be sent by U.S.  mail,  addressed  to  Sublandlord  at the  address set forth
herein,  and to such other person or place as Sublandlord  may from time to time
designate  in a notice to  Subtenant.  Delivery of any notice shall be effective
three  business  days  after  date of  mailing  if sent by U.S.  mail,  the next
business day after being sent, if delivered by overnight delivery service, or on
the date of  transmission  if sent by  facsimile on a business day prior to 4:00
p.m. EST (and if sent later than 4:00 p.m. EST, on the next business day).      
                                                                                
- -----------------------------------------   ------------------------------------
                                                                                
To Sublandlord:                             Ernst & Young U.S. LLP              
                                            Sears Tower                         
                                            233 S. Wacker Drive                 
                                            Chicago, Il.  60606                 
                                            Attn:  Managing Partner             
                                            Fax No.  312-879-3770               
- -----------------------------------------   ------------------------------------
- -----------------------------------------   ------------------------------------
                                                                                
With copies of any notice of default to:    Ernst & Young U.S. LLP              
                                            Attn:  General Counsel's Office     
                                            787 Seventh Avenue                  
                                            New York, NY  10019                 
                                            Fax No.  212-773-3896               
- -----------------------------------------   ------------------------------------
- -----------------------------------------   ------------------------------------
                                                                                
To Subtenant:                               SPSS Inc.                           
                                            Sears Tower                         
                                            233 S. Wacker Drive, 11th Floor     
                                            Chicago, Il.  60606                 
                                            Attn.:  Senior Director,            
                                                    Corporate Administration    
                                            Fax No.:                            
- -----------------------------------------   ------------------------------------
- -----------------------------------------   ------------------------------------
                                                                                
With a copy of any notice delivered         SPSS Inc.                           
prior to November 1, 1998 also to:          444 North Michigan Avenue           
                                            Chicago, Illinois 60611-3962        
                                            Attn:  Senior Director, Corporate   
                                                   Administration               
                                            Fax No.:  312-329-3560              
- -----------------------------------------   ------------------------------------
                                                                                
13. Time Periods for Performance.  Notwithstanding  the provisions of Section 10
of this Sublease,  the time limits  contained in the Master Lease for the giving
of notices, making of                                                           
                                                                                
<PAGE>                                                                          
                                                                                
demands or  performing  of any act,  condition or covenant on the part of tenant
under the Master  Lease,  or for the  exercise by the tenant  thereunder  of any
right,  remedy or option  incorporated  herein are  changed  for the  purpose of
incorporation  herein by reference by shortening the same, in each instance,  by
five (5) days, so that,  in each  instance,  Subtenant  shall have five (5) days
less time to observe or perform  hereunder than  Sublandlord has as tenant under
the Master Lease. If the Master Lease, as incorporated  herein, only allows five
(5) days or less for  Subtenant  to perform  any act or to correct  any  failure
relating  to the  Premises  or this  Sublease,  then,  except in the event of an
emergency, Subtenant shall nevertheless be allowed three (3) days to perform any
such act or correct any such failure.                                           
                                                                                
14. Performance by Sublandlord; Quiet Enjoyment. Sublandlord agrees that it will
pay all rent and other  charges  due and  payable  under the  Master  Lease with
respect to the entire Master  Premises as and when the same shall become due and
payable,  subject to  Sublandlord's  rights and remedies under the Master Lease,
that Sublandlord will observe and perform all other  obligations  required to be
observed  or  performed  by tenant  under the Master  Lease with  respect to the
portion of the Master Premises not included in the Premises demised hereby,  and
that, subject to Subtenant's performance of its obligations under this Sublease,
Sublandlord  will maintain the Master Lease in full force and effect and in good
standing.                                                                       
                                                                                
         Sublandlord further covenants that Subtenant,  upon paying the rent and
the charges  provided for herein and upon  observing  and  performing  all other
terms,  covenants,  conditions and agreements contained herein, shall during the
Term of this Sublease  peaceably  and quietly have,  hold and enjoy the Premises
subject to the terms, covenants,  conditions and agreements hereof free from any
hindrance  by  Sublandlord   or  any  person   claiming  by,  through  or  under
Sublandlord.                                                                    
                                                                                
15. Enforcement of Rights. If Master Landlord defaults in any of its obligations
under the  Master  Lease,  Subtenant  shall be  entitled,  at its own  cost,  to
participate  with  Sublandlord  in any action  undertaken by  Sublandlord in the
enforcement of  Sublandlord's  rights against  Master  Landlord.  If Sublandlord
elects  not  to  take  action,  whether  legal  action  or  otherwise,  for  the
enforcement of  Sublandlord's  rights against Master  Landlord,  Subtenant shall
have the right to take such  action in its own name and,  for that  purpose  and
only to such extent,  all the rights of Sublandlord  under the Master Lease with
respect to the Premises  shall be and are hereby  conferred upon and assigned to
Subtenant,  and Subtenant  shall be subrogated to such rights to the extent they
apply to the Premises.  Subtenant shall defend,  indemnify and hold  Sublandlord
harmless from all claims,  costs and liabilities,  including attorneys' fees and
costs,  arising out of or in connection  with any such action by  Sublandlord on
Subtenant's behalf or by Subtenant.                                             
                                                                                
16.  Delivery of  Possession.  The Premises  shall be delivered in their "as is"
condition (as of the  Commencement  Date),  broom clean, on the respective dates
that the several portions of the Premises are required to be delivered  pursuant
to the terms hereof.  Subtenant  acknowledges that it has inspected the Premises
and found  them to be in  acceptable  condition.  However,  notwithstanding  the
foregoing,  Sublandlord shall remove all the furniture and personal property (i)
from the 11th floor of the Master Premises prior to the  Commencement  Date, and
(ii) from the                                                                   
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
12th floor of the Master Premises prior to the Add-On Date.                     
                                                                                
17. Insurance. Subtenant shall comply with all of the insurance requirements and
obligations of Sublandlord, as tenant under the Master Lease, and shall, whether
required by the Master Lease or not,  name Master  Landlord and  Sublandlord  as
additional insureds, as their interests may appear, on all policies of insurance
required  to be  carried by  Subtenant  hereunder  or  thereunder.  The  parties
mutually  agree that  (insofar as and to the extent that such  agreement  may be
effective  without  invalidating  or making it  impossible  to secure  insurance
coverage from  responsible  insurance  companies  doing business in the State of
Illinois),  with respect to any property loss which is covered by insurance then
being carried by Sublandlord or Subtenant, respectively, the party carrying such
insurance  and  suffering  such loss  releases the other of and from any and all
claims with respect to such loss;  and the parties  further  mutually agree that
their respective  insurance companies shall have no right of subrogation against
the other on account thereof, even though extra premium may result therefrom. If
and to the extent such waiver can be obtained only upon payment of an additional
charge, the party benefiting from the waiver shall pay such charge, upon demand,
or shall be  deemed  to have  agreed  that the  party  obtaining  the  insurance
coverage  in  question  shall  be  free of any  further  obligations  under  the
provisions hereof relating to such waiver.                                      
                                                                                
18. Subtenant's and Sublandlord's  Indemnity.  Subtenant shall defend, indemnify
and hold harmless Sublandlord,  its partners,  employees, and agents, and Master
Landlord,  from and against any and all claims,  liabilities,  suits, judgments,
awards,  damages,  losses,  fines,  penalties,  costs  and  expenses,  including
reasonable  attorney's  fees,  that  Sublandlord,  its  partners,  employees and
agents,  and Master Landlord may suffer,  incur or be liable for by reason of or
arising  out of or  related  to the breach by  Subtenant  of any of the  duties,
obligations,   liabilities  or  covenants  applicable  to  Subtenant  hereunder,
Subtenant's  occupancy or use of the  Premises,  any  alterations,  additions or
modifications  made to the Premises by Subtenant or  Subtenant's  negligence  or
willful  misconduct.  This  indemnification  shall survive  termination  of this
Sublease.                                                                       
                                                                                
         Sublandlord shall defend,  indemnify and hold harmless  Subtenant,  its
officers, directors,  employees and agents, from and against any and all claims,
liabilities,  suits, judgments, awards, damages, losses, fines, penalties, costs
and  expenses,   including  reasonable  attorneys'  fees,  that  Subtenant,  its
officers, directors,  employees and agents may suffer, incur or be liable for by
reason of or arising  out of or related to the breach by  Sublandlord  of any of
the duties,  obligations,  liabilities  or covenants  applicable to  Sublandlord
hereunder or Sublandlord's  negligence or willful  misconduct within or relating
to the Master Premises.  This indemnification  shall survive termination of this
Sublease.                                                                       
                                                                                
19.  Alterations.  Notwithstanding  anything in the Master Lease as incorporated
herein to the  contrary,  before  proceeding  with any  alteration,  addition or
improvement to the Premises (collectively, "Alteration"), Subtenant shall obtain
the prior  written  consent of  Sublandlord  and Master  Landlord  and submit to
Sublandlord and Master Landlord plans and specifications for the work to be done
prepared by a licensed  architect for  Sublandlord's and Master Landlord's prior
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
written consent. Subtenant shall reimburse Sublandlord,  within ten (10) days of
written demand  therefor,  for all of  Sublandlord's  reasonable,  out-of-pocket
costs incurred in connection with the review of Subtenant's  plans and obtaining
the  consent  of  Master  Landlord  with  respect  thereto,  including,  without
limitation,  any costs imposed by Master  Landlord  pursuant to the terms of the
Master Lease.  Sublandlord  shall not  unreasonably  withhold its consent to any
such proposed work or plans and  specifications,  and Sublandlord shall describe
with particularity any objection, and the reasons therefor, which it may have to
any proposed work or plans or  specifications.  Sublandlord shall be required to
respond  within ten (10) days of receipt of any request from  Subtenant  for its
consent to any  Alteration  provided that Subtenant sets forth such ten (10) day
response  period in its request for such  consent.  Subtenant  shall  deliver to
Sublandlord,  within  five  (5) days of  request,  a copy of  Master  Landlord's
approval of Subtenant's  plans for any Alteration.  Subtenant  acknowledges  and
agrees that,  notwithstanding  anything herein to the contrary,  with respect to
any  of  Subtenant's  Alterations,  Sublandlord  shall  have  no  responsibility
whatsoever for the installation or proper functioning of, cost of correcting, or
removal upon  Sublease  termination  of any of  Subtenant's  Alterations  or any
compliance requirements of the Master Lease (including,  without limitation, any
costs  imposed by Master  Landlord  with  respect to its review of plans  and/or
supervision of work),  and Subtenant  shall bear the entire  responsibility  and
liability therefor.                                                             
                                                                                
20.      Limitations on Sublandlord.                                            
                                                                                
     (i) Subtenant  acknowledges that Sublandlord has made no representations or
warranties  with  respect to the  Building or the  Premises  except as expressly
provided in this Sublease.                                                      
                                                                                
     (ii) If  Sublandlord  assigns  its  leasehold  estate in the entire  Master
Premises,  Sublandlord shall have no obligation to Subtenant arising thereafter.
Subtenant  shall then recognize  Sublandlord's  assignee as sublessor under this
Sublease.                                                                       
                                                                                
     (iii) Sublandlord shall not be required to perform any of the covenants and
obligations of Master Landlord under the Master Lease and, insofar as any of the
obligations of the Sublandlord  hereunder are required to be performed under the
Master  Lease by Master  Landlord,  Subtenant  shall rely on and look  solely to
Master Landlord for the performance thereof.                                    
                                                                                
21. Subtenant's  Obligations upon Termination of this Sublease.  Subtenant shall
keep the Premises in good order and condition and as otherwise required pursuant
to the  Master  Lease  as  incorporated  herein.  At the  expiration  or  sooner
termination  of this  Sublease,  Subtenant  shall  surrender  and deliver up the
Premises  "broom clean" and in the same  condition as delivered by  Sublandlord,
except  that  (i)  Subtenant  shall  not be  required  to  remove  any  part  of
Subtenant's  Work (as  defined in Section 34 hereof),  or any of its  subsequent
Alterations unless (a) with respect to either of the foregoing, Master Landlord,
pursuant to the terms of the Master Lease  requires  such  removal,  or (b) with
respect to any  subsequent  Alterations  at the time of granting  its consent to
such Alteration,  Sublandlord notified Subtenant that it will require removal of
same upon  Sublease  termination;  and (ii) ordinary wear and tear and damage by
fire and other  casualty  shall also be  excepted.  Subtenant  shall  repair any
damage to the Premises or the Building caused                                   
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
by Subtenant's  move into or out of the Premises,  the removal from the Premises
of any property by or on behalf of Subtenant, and any damage otherwise caused by
Subtenant its agents,  contractors  or employees.  Any of  Subtenant's  personal
property,  fixtures or equipment  which shall  remain in the Premises  after the
expiration or sooner  termination of this Sublease shall be deemed  conclusively
to have been abandoned and either may be retained by Sublandlord as its property
or may be disposed of in such manner as Sublandlord  may see fit, at Subtenant's
sole cost and expense.                                                          
                                                                                
22.  Subordination to the Master Lease.  This Sublease is expressly  subject and
subordinate to the Master Lease.  In the event of any  termination of the Master
Lease or reentry or  dispossession  by Master  Landlord  under the Master Lease,
this Sublease shall terminate unless Master Landlord, at its sole option, elects
to take over all of the right,  title and interest of  Sublandlord  as sublessor
under this Sublease and, in such case, Subtenant shall attorn to Master Landlord
pursuant to the then  executory  provisions of this Sublease  except that Master
Landlord shall not be (i) liable for any previous act or omission of Sublandlord
under this Sublease,  (ii) subject to any offset not expressly  provided in this
Sublease which theretofore accrued to Subtenant against Sublandlord, (iii) bound
by any previous  modification of this Sublease unless consented in writing to by
Master Landlord,  or (iv) bound by any prepayment of more than one month's rent.
Subtenant  acknowledges  that it has received a copy, and has reviewed the terms
of, the Master Lease. In addition to Subtenant's obligations under this Sublease
and to the extent not inconsistent  with this Sublease,  Subtenant shall observe
and perform all of the terms, covenants and conditions of the Master Lease which
Sublandlord,  as tenant  under the Master  Lease,  is  obligated  to observe and
perform with respect to the Premises, as such terms, covenants and conditions of
the  Master  Lease  are  incorporated  herein  pursuant  to  Section  10 of this
Sublease.  Subtenant  shall  indemnify  and hold  Sublandlord  harmless from and
against any and all claims, suits,  liabilities,  costs and expenses,  including
reasonable   attorneys'  fees  and  costs,  asserted  against  or  sustained  by
Sublandlord  under the Master  Lease with  respect to the  Premises or resulting
from a termination of the Master Lease caused by Subtenant.  Subtenant shall not
do,  omit to do, or permit to be done or  omitted  any act in or  related to the
Premises  which could or does  constitute a breach or default under the terms of
the Master  Lease.  If any of the  express  provisions  of this  Sublease  shall
conflict with any of the provisions of the Master Lease as incorporated  herein,
such  conflict  shall be  resolved in favor of the  express  provisions  of this
Sublease.                                                                       
                                                                                
23.  Sublandlord's  Access.  Sublandlord and its agents and employees and Master
Landlord  shall  have  the  right  to  enter  the  Premises  in the  event of an
emergency,  and at other  reasonable  times,  from time to time, upon reasonable
notice to Subtenant (which notice may be oral) to ascertain whether Subtenant is
in  compliance  with the  provisions of this  Sublease,  to make such repairs as
Sublandlord deems necessary,  and, in the case of Master Landlord, for all other
purposes permitted under the Master Lease.                                      
                                                                                
24.  Interest on Unpaid Rent.  All  installments  of monthly rent, and any other
charges  which are not paid by Subtenant  when due shall bear  interest from the
date due until paid, at a rate set forth in Section 26.B of the Master Lease, in
no event to exceed the maximum legal rate (the                                  
                                                                                
<PAGE>                                                                          
                                                                                
"Interest Rate").                                                               
                                                                                
25.  Repairs  and  Maintenance  of the  Premises.  Any  repair  and  maintenance
obligations  with  respect  to the  Premises  which  are the  responsibility  of
Sublandlord,  as tenant under the Master Lease, shall be performed by Subtenant,
at  Subtenant's   sole  cost  and  expense.   Subtenant  shall  promptly  notify
Sublandlord of the need of any such repair, even though Sublandlord shall not be
responsible or liable therefor.                                                 
                                                                                
26. Consent or Approval of Master Landlord. If the consent or approval of Master
Landlord is required under the Master Lease with respect to any matter  relating
to the  Premises or this  Sublease,  it shall also be  required  of  Sublandlord
hereunder,  except as otherwise expressly provided herein. Subtenant may request
such consents and approvals concurrently. If Sublandlord grants any such consent
or approval, such consent may be conditioned upon Subtenant's receipt of consent
or approval  from  Master  Landlord.  Subtenant  shall be required to deliver to
Sublandlord  a copy of any request for consent or approval  delivered  to Master
Landlord and Master Landlord's response thereto within five (5) days of delivery
or  receipt,  as the  case  may be.  Sublandlord  shall,  if  requested,  assist
Subtenant  in  obtaining  such  consent or approval  from Master  Landlord,  but
Sublandlord  shall not be responsible  for obtaining such consent or approval or
any costs or expenses in connection therewith.                                  
                                                                                
27. Holdover. If Subtenant holds possession of the Premises after the expiration
or sooner  termination  of this  Sublease,  Subtenant  shall  become a tenant at
sufferance on a day-to-day  basis upon the terms specified herein at two hundred
percent  (200%) of the then existing  monthly base rent and one hundred  percent
(100%)  other  charges  payable  hereunder.  In  addition,  Subtenant  shall  be
responsible for any and all damages suffered by Sublandlord,  including, without
limitation,  holdover rent payable under the Master Lease,  all damages or costs
resulting from actions  initiated by Master  Landlord under the Master Lease and
all direct damages or costs resulting from actions initiated by third parties as
a result of such hold over.  Such tenancy shall not constitute a renewal of this
Sublease.                                                                       
                                                                                
28.  Liability of Sublandlord.  Notwithstanding  any other  provision  contained
herein to the contrary,  Subtenant  shall look only to the assets of Sublandlord
for the  satisfaction  of any liability of  Sublandlord  under the Sublease,  it
being  expressly  understood  and agreed that any  partner,  officer,  director,
employee or agent of Sublandlord as an individual  shall not be held  personally
liable for such  obligations and Subtenant shall not pursue  satisfaction of any
judgment  against  Sublandlord  against  the assets of any  individual  partner,
officer, director, employee or agent of Sublandlord.                            
                                                                                
29. Right to Cure Subtenant's  Defaults.  If Subtenant shall at any time fail to
make any payment or perform any other  obligation of Subtenant  hereunder,  then
Sublandlord  shall have the right,  but not the obligation,  after the lesser of
five (5) days' notice to Subtenant or the time within which Master  Landlord may
act on  Sublandlord's  behalf  under the  Master  Lease,  or  without  notice to
Subtenant  in the  case of any  emergency,  and  without  waiving  or  releasing
Subtenant from any obligations of Subtenant  hereunder,  to make such payment or
perform such                                                                    
                                                                                
<PAGE>                                                                          
                                                                                
                                                                                
other  obligation of Subtenant in such manner and to such extent as  Sublandlord
shall deem  necessary,  and in exercising any such right,  to pay any incidental
costs and expenses, employ attorneys and other professionals,  and incur and pay
attorneys'  fees and other costs  reasonably  required in connection  therewith.
Subtenant  shall pay to Sublandlord  upon demand all sums so paid by Sublandlord
and all incidental  costs and expenses of  Sublandlord in connection  therewith,
together with interest thereon at the Interest Rate.                            
                                                                                
30. Survival. Except as otherwise set forth in this Sublease, any obligations of
Subtenant (including, without limitation, rental and other monetary obligations,
repair obligations and obligations to indemnify Sublandlord),  shall survive the
expiration  or  sooner  termination  of  this  Sublease,   and  Subtenant  shall
immediately  reimburse  Sublandlord  for any expense  incurred by Sublandlord in
curing Subtenant's failure to satisfy any such obligation  (notwithstanding  the
fact that such cure might be effected by Sublandlord following the expiration or
earlier termination of this Sublease).                                          
                                                                                
31. Brokers.  Sublandlord and Subtenant warrant and represent that they have had
no  dealings  with any real  estate  broker  or  agent  in  connection  with the
negotiation of this Sublease except for LaSalle Partners  Management  (Illinois)
Limited  Partnership  ("LaSalle"),  and that they know of no other  real  estate
broker or agent who is or might be entitled to a commission in  connection  with
this  Sublease.  Sublandlord  agrees  that  it  shall  be  responsible  for  any
commission  which  may be owed to  LaSalle  in  connection  with  this  Sublease
pursuant  to a  separate  agreement.  Sublandlord  and  Subtenant  each agree to
indemnify, defend and hold the other party harmless from and against any and all
liabilities or expenses,  including attorneys' fees and costs, arising out of or
in connection with a breach of the representation contained in this section.    
                                                                                
32.  Consent by Master  Landlord.  This  Sublease  is  subject to  Sublandlord's
obtaining the prior written  consent of Master  Landlord and, if required  under
the terms of the Master Lease, the consent of Master Landlord's lender (together
the "Required  Consent").  Sublandlord  agrees to use all reasonable  efforts to
obtain the Required  Consent  within ten (10) days from the date the Sublease is
submitted to Master  Landlord for its consent,  it being  understood  and agreed
that  Sublandlord  shall submit this Sublease to Master Landlord for its consent
as soon as  reasonably  possible  after the date of full  execution and delivery
hereof but in no event prior to April 1, 1997.  If the  Required  Consent is not
obtained  within  ten (10)  days  after the  execution  and  delivery  hereof by
Sublandlord and Subtenant, then Subtenant at its option, exercisable by delivery
of written  notice to  Sublandlord,  may  terminate  and cancel  this  Sublease.
Sublandlord  shall not be entitled to  terminate  and cancel this  Sublease  (i)
unless and until Master Landlord,  pursuant to the provision of the Master Lease
delivers to Tenant written notice that the Required Consent has been denied,  or
(ii)  if  Master  Landlord  has  failed  to  deliver  the  Required  Consent  to
Sublandlord  within  forty-five (45) days of the date this Sublease is submitted
to Master Landlord for such consent  notwithstanding  that  Sublandlord has used
commercially  reasonable  efforts  to  obtain  the  Required  Consent.  Upon any
termination and cancellation of this Sublease by either Subtenant or Sublandlord
pursuant to the foregoing  provisions of this Section 32, this Sublease shall be
null and void and neither party shall have any further liability to the other on
account of or under any of the terms and provisions of this Sublease (except for
any liability due to the wrongdoing of the                                      
                                                                                
<PAGE>                                                                          
                                                                                
respective party).                                                              
                                                                                
33.  Submission  of Sublease to Subtenant.  The  submission  by  Sublandlord  to
Subtenant  of this  Sublease  shall have no binding  force or effect,  shall not
constitute an option for the subleasing of the Premises nor confer any rights or
impose  any  obligations  upon  either  party  until the  execution  thereof  by
Sublandlord  and the delivery of an executed  original copy thereof to Subtenant
or its representative.                                                          
                                                                                
34.      Improvements to Premises.                                              
                                                                                
         34.1  Subtenant's  Work.  Subtenant  intends to install certain initial
Alterations in the 11th and 12th floors of (the "11th Floor Alterations" and the
"12th Floor Alterations," respectively) at its sole cost and expense, subject to
Sublandlord's obligation to provide the Work Allowance pursuant to Section 34.4.
The 11th Floor  Alterations and the 12th Floor  Alterations shall be referred to
together  as the  "Alterations."  Subtenant  hereby  covenants  and agrees  that
Subtenant  will, in a good and workmanlike  manner,  make and complete such work
and  installation in and to the Premises  expeditiously  and in such a manner so
that the Premises will be executive and general offices of a standard consistent
with the nature and quality of the Building.  Sublandlord  and  Subtenant  agree
that such work shall be subject to the  provisions  of Section 19 hereof as well
as any  applicable  provisions  of the  Master  Lease.  The  work  set  forth in
Subtenant's  final  plans for the  Alterations  approved  in  writing  by Master
Landlord and Sublandlord  shall  hereinafter be called  "Subtenant's  Work". The
11th  Floor  Alterations  shall  be  the  first  phase  ("First  Phase")  of the
Alterations  and shall  commence  within sixty (60) days after the  Commencement
Date. The 12th Floor  Alterations  shall be the second phase ("Second Phase") of
the  Alterations  and shall  commence  within  thirty (30) days after the Add-On
Date.                                                                           
                                                                                
     34.2 Plan Approval.  Notwithstanding  anything to the contrary set forth in
the Master Lease, the following provisions shall apply to Subtenant's Work:     
                                                                                
          34.2.1 The final  plans for both  phases of  Subtenant's  Work and any
               changes  thereto  shall be submitted by Subtenant to  Sublandlord
               and Master Landlord for their written  approval before  Subtenant
               shall commence any portion of Subtenant's  Work. Any  reasonable,
               out-of-pocket  costs incurred by  Sublandlord in connection  with
               the  review  of  Subtenant's  plans  and/or  the  supervision  of
               Subtenant's Work,  including any costs imposed by Master Landlord
               on Sublandlord  in connection  with Master  Landlord's  review of
               such plans and/or supervision of Subtenant's Work pursuant to the
               terms of the Master  Lease,  shall be  reimbursed by Subtenant to
               Sublandlord  within  ten (10) days of  written  demand.  Prior to
               commencing the work set forth therein, or within five (5) days of
               Sublandlord's  request,  whichever  shall occur first,  Subtenant
               shall deliver to Sublandlord a copy of Master Landlord's approval
               of Subtenant's  final plans and any changes thereto.  Sublandlord
               shall not unreasonably  withhold its consent to Subtenant's plans
               and shall  describe with                                         
                                                                                
<PAGE>                                                                          
                                                                                
                                                                                
               particularity  any  objection,  and the reasons  therefor,  which
               Sublandlord  may have.  Sublandlord  shall be required to respond
               within ten (10) days of receipt of any request from Subtenant for
               Sublandlord's  consent  to any such  final  plans  provided  that
               Subtenant  sets  forth such ten (10) day  response  period in its
               request for such consent.  Upon  completion of Subtenant's  Work,
               Subtenant shall deliver to Sublandlord final "as-built"  drawings
               for such work.                                                   
                                                                                
          34.2.2  Subtenant   acknowledges  and  agrees  that,   notwithstanding
               anything  herein  to the  contrary,  Sublandlord  shall  have  no
               responsibility   whatsoever  for  the   installation   or  proper
               functioning of, cost of correcting,  or any removal upon Sublease
               termination required pursuant to Section 21 hereof of any portion
               of  Subtenant's   Work  and  Subtenant   shall  bear  the  entire
               responsibility and liability therefor.                           
                                                                                
          34.2.3 Any contractors  used by Subtenant to perform  Subtenant's Work
               shall be subject to the prior written approval of Master Landlord
               and Sublandlord.  Sublandlord shall not unreasonably withhold its
               approval to any contractors proposed by Subtenant and shall grant
               or deny  approval,  as the case may be,  within  ten (10) days of
               receipt of Subtenant's written request provided that such written
               request sets forth such ten (10) day approval period. If required
               by Master  Landlord  pursuant  to the terms of the Master  Lease,
               Subtenant  shall be  required to use Master  Landlord's  Building
               architectural  and engineering  firms to do any structural and/or
               mechanical/electrical /plumbing engineering work, respectively.  
                                                                                
         34.3 Work  Allowance.  Sublandlord  shall  provide to Subtenant a total
allowance amount of $2,983,320 (the "Work Allowance").  The Work Allowance shall
be available for "Subtenant's Work Cost," which, as used herein, shall mean only
Subtenant's  architectural and design fees and the direct  construction costs of
Subtenant's Work,  including,  without  limitation,  permit and filing fees, but
expressly  excluding  furniture,   equipment,  trade  fixtures,  attorneys'  and
accountants'  fees,  and moving  costs.  To the  extent any  portion of the Work
Allowance  remains  available  after  payment of  Subtenant's  Work  Cost,  such
remaining  amount shall be applied to the rent and other  charges next  becoming
payable under this Sublease.  In the event the Subtenant's Work Cost exceeds the
Work Allowance, Subtenant shall be entirely responsible for such excess.        
                                                                                
         34.4  Payment. Provided that Subtenant is not in default hereunder, the
Work Allowance shall be payable to Subtenant by Sublandlord in installments, or 
in its entirety (if Subtenant  makes  only  one  application  for  payment  upon
completion  of  Subtenant's  Work) as requested by Subtenant  within thirty (30)
days after written requisition from Subtenant for disbursement which requisition
shall be  accompanied  by (i)  copies of all  invoices  for such  portion of the
Subtenant's Work which has been completed and for which payment is sought, which
are  certified  in writing by an  officer or partner of  Subtenant  to have been
paid;  (ii) copies of lien waivers  obtained from all  Subtenant's  contractors,
subcontractors  and  suppliers to be paid                                       
                                                                                
<PAGE>                                                                          
                                                                                
                                                                                
from the  requested  payment,  provided that the waivers by  subcontractors  and
suppliers may be thirty (30) days in arrears,  and (iii) a certificate signed by
Subtenant's  architect and an officer of Subtenant  certifying that such portion
of  Subtenant's  Work  has  been  satisfactorily   completed   substantially  in
accordance  with the final plans approved by Master Landlord and Sublandlord (or
in  accordance  with any  changes to such final plans to which  Sublandlord  and
Master Landlord shall have given their written approval). It is acknowledged and
agreed that  Sublandlord  shall not be  obligated  to make more than one interim
disbursement  of  the  Work  Allowance  with  respect  to  the  First  Phase  of
Subtenant's  Work  prior  to  completion  of  the  First  Phase  and  one  final
disbursement with respect to the First Phase after the completion  thereof,  and
not more than one interim disbursement of the Work Allowance with respect to the
Second Phase of Subtenant's Work prior to completion of the Second Phase and one
final  disbursement  with  respect  to the  Second  Phase  after the  completion
thereof,  plus,  at  Subtenant's  option,  one  additional   disbursement  after
completion  of all of  Subtenant's  Work.  Notwithstanding  any other  provision
hereof,  there shall be no final disbursement of the Work Allowance with respect
to either  phase of  Subtenant's  Work  until  Subtenant  has (a)  delivered  to
Sublandlord  a copy  of  all  necessary  governmental  sign-offs  and  approvals
necessary for  Subtenant's  legal occupancy of the portion of the Premises as to
which such work relates (including, without limitation, a temporary or permanent
certificate  of  occupancy)  to  the  extent  such  governmental  sign-offs  and
approvals are typically issued under prevailing  industry  standards prior to an
office tenant's occupancy,  and (b) met all requirements of this Sublease and of
Master  Landlord as may be imposed  pursuant to the Master Lease with respect to
such  work.  In  the  event  Sublandlord  fails  to  pay  any  properly  payable
installment of the Work Allowance when payable in accordance with the foregoing,
provided that Subtenant delivers written notice to Sublandlord that such payment
is past due, such unpaid amount shall bear interest  until paid at the same rate
as provided in Section 24 hereof with respect to unpaid rent, and, if not sooner
paid,  Subtenant  shall have the right to offset  any such due and  unpaid  Work
Allowance, plus any interest accrued thereon, to the rent and other charges next
becoming due hereunder.                                                         
                                                                                
         34.5  Inspection.   At  any  and  all  times  during  the  progress  of
Subtenant's Work,  representatives of Sublandlord and Master Landlord shall have
the right of access to the Premises and inspection thereof;  provided,  however,
that  neither  Sublandlord  nor  Master  Landlord  shall  incur  any  liability,
obligation or  responsibility  to Subtenant or any third party by reason of such
access and inspection.                                                          
                                                                                
35. Rent  Abatement.  Pursuant to Section 6.1 of this  Sublease no monthly  base
rent is  payable  from  the  Commencement  Date  until  November  1,  1998  (the
"Abatement  Period").  If  Subtenant's  right to  possession  of the Premises is
terminated because of Subtenant's  default under this Sublease,  Sublandlord may
recover from Subtenant,  in addition to any other damages due Sublandlord  under
the terms and  conditions  of the  Sublease,  the  unearned  amount of base rent
abatements  computed in accordance  with the last paragraph of Section 22 of the
Master  Lease  assuming  that  the base  rent on the  Premises  subject  to this
Sublease from  time-to-time  during the Abatement  Period would have been $17.50
per rentable square foot per annum.                                             
                                                                                
36. Signs.  Subtenant  shall not be entitled to any signs on the entrance to its
Premises except                                                                 
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
as first approved in writing by Master Landlord.  Subtenant shall bear all costs
and  expenses  associated  with any such  signs and shall  remove  the same upon
expiration  of the Term and  repair any  damage to the  Building  caused by such
removal at its sole expense.                                                    
                                                                                
37.      Estoppel Certificate.                                                  
                                                                                
         37.1 Subtenant  agrees that from time to time (but not more  frequently
than  twice  each  year and also in  connection  with any  sale,  assignment  or
financing by  Sublandlord)  upon not less than  fifteen (15) days prior  written
request by Sublandlord (or such shorter period as may be required to comply with
a request from Master Landlord  pursuant to the terms of the Master Lease but in
no  event  less  than  five  (5)  business  days.  Subtenant  shall  deliver  to
Sublandlord any estoppel  certificate  required in accordance with Section 18 of
the Master  Lease as  incorporated  herein,  whether  for the  benefit of Master
Landlord or Sublandlord.                                                        
                                                                                
         37.2  Sublandlord  agrees  that  from  time to time  upon not less than
fifteen (15) days prior written  request by Subtenant  (but not more  frequently
than twice each year and also in connection with any sale,  assignment  sublease
or financing by Subtenant),  Sublandlord  shall deliver to Subtenant a statement
in writing certifying (a) that this Sublease is unmodified and in full force and
effect (or if there have been modifications that the Sublease,  as modified,  is
in full  force and  effect);  (b) the  dates to which  the rent and  other  sums
payable  under  this  Sublease  have  been  paid;  (c)  that,  to  Sublandlord's
knowledge,  without independent  investigation neither Sublandlord nor Subtenant
is in default  under any  provision  of this  Sublease,  or, if in default,  the
nature thereof in reasonable  detail;  and (d) such other matters  comparable to
the matters contained in Exhibit H to the Master Lease.                         
                                                                                
         In the event  Sublandlord  fails to deliver such statement to Subtenant
within such 15-day  period,  such  failure,  if not cured  within an  additional
15-day period after  delivery of written  notice  thereof  (accompanied  by such
information with respect to such foregoing certifications as Subtenant considers
accurate) shall be deemed a certification by Sublandlord that the Sublease is in
full  force a and  effect,  that no rent has been  paid  more  than one month in
advance and that to Subtenant's  knowledge neither Sublandlord nor Subtenant are
in default hereunder.                                                           
                                                                                
         This  Sublease  has been  executed  on the day and year  first  written
above.                                                                          
                                                                                
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
                                                                                
                                                                                
SUBLANDLORD:                                  SUBTENANT:                        
                                                                                
Ernst & Young U.S. LLP                        SPSS Inc.                         
                                                                                
                                                                                
By /s/ Jack Staley                            By  /s/ Edward Hamburg
Name:                                         Name: Edward Hamburg       
           Partner                            Title: Executive Vice President 
                                                                                
                                                                                
                                              By_________________________       
                                              Name:                             
                                              Title:                            
                                                                                
                                                                                
                                                                                
                                                                                
<PAGE>                                                                          
                                                                                
                                                                                
                                    EXHIBIT A                                   
                                                                                
                                                                                
                       (Attach Master Lease & Amendments)                       
                                                                                
                                                                                

                                 
                                                                    EXHIBIT 15.1
                                        
                                        
                                        
                                        
                                                                                
                          Acknowledgment of Independent
                          Certified Public Accountants
                  Regarding Independent Auditors' Review Report
                                                      
                                                      
The Board of Directors                                
SPSS Inc.:                                            
                                                      
With  respect  to the  Registration  Statements  on Form  S-8 of SPSS  Inc.,  we
acknowledge  our awareness of the use therein of our report dated April 29, 1997
related to our review of interim financial information.

Pursuant to Rule 436(c)  under the  Securities  Act of 1933,  such report is not
considered part of a registration  statement prepared or certified by an account
or a report  prepared  or  certified  by an  accountant  within  the  meaning of
sections 7 and 11 of the Act.



                                                       /s/ KPMG Peat Marwick LLP
                                                           KPMG Peat Marwick LLP



Chicago, Illinois
May 13, 1997



<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM     
SPSS INC. AND SUBSIDIARIES  CONSOLIDATED BALANCE SHEET AT MARCH 31,
1997 AND  CONSOLIDATED  STATEMENT  OF INCOME  FOR THE THREE  MONTHS
ENDED MARCH 31, 1997 AND IS  QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH FINANCIAL STATEMENTS.                                      
</LEGEND>
<CIK>                         0000869570
<NAME>                        SPSS Inc.
<MULTIPLIER>                                   1,000
       
<S>                                           <C>
<PERIOD-TYPE>                                 3-MOS
<FISCAL-YEAR-END>                             DEC-31-1997
<PERIOD-END>                                  MAR-31-1997
<CASH>                                        12,110
<SECURITIES>                                       0
<RECEIVABLES>                                 21,117
<ALLOWANCES>                                   1,517
<INVENTORY>                                    1,564
<CURRENT-ASSETS>                              34,812
<PP&E>                                        18,154
<DEPRECIATION>                                12,593
<TOTAL-ASSETS>                                53,282
<CURRENT-LIABILITIES>                         22,513
<BONDS>                                            0
                              0
                                        0
<COMMON>                                          77
<OTHER-SE>                                    28,447
<TOTAL-LIABILITY-AND-EQUITY>                  53,282
<SALES>                                       22,194
<TOTAL-REVENUES>                              22,194
<CGS>                                          2,253
<TOTAL-COSTS>                                  2,253
<OTHER-EXPENSES>                              16,305
<LOSS-PROVISION>                                  10
<INTEREST-EXPENSE>                                 8
<INCOME-PRETAX>                                3,741
<INCOME-TAX>                                   1,235
<INCOME-CONTINUING>                            2,506
<DISCONTINUED>                                     0
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                                   2,506
<EPS-PRIMARY>                                   0.29
<EPS-DILUTED>                                   0.29
                                          
                                          
                                        
                                        

</TABLE>


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