HNC SOFTWARE INC/DE
S-4/A, 1998-12-21
PREPACKAGED SOFTWARE
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<PAGE>   1

   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 21, 1998
                                                  REGISTRATION NO. 333-64527
================================================================================
    


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ----------------------
   
                                AMENDMENT NO. 1
                                       TO
                                    FORM S-4
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
    
                             ----------------------

                                HNC SOFTWARE INC.
             (Exact name of Registrant as specified in its charter)


<TABLE>
<S>                                    <C>                                      <C>       
          DELAWARE                                  7372                         33-0248788
(State or other jurisdiction of        (Primary Standard Industrial            (I.R.S. employer
incorporation or organization)         Classification Code Number)             identification no.)
                                             ----------------------
</TABLE>


                           5930 CORNERSTONE COURT WEST
                        SAN DIEGO, CALIFORNIA 92121-3728
                                 (619) 546-8877
          (Address, including zip code, and telephone number, including
            area code, of Registrant's principal executive offices)

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

                                RAYMOND V. THOMAS
                             CHIEF FINANCIAL OFFICER
                                HNC SOFTWARE INC.
                           5930 CORNERSTONE COURT WEST
                        SAN DIEGO, CALIFORNIA 92121-3728
                                 (619) 546-8877
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)

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

                                   Copies to:

GORDON K. DAVIDSON, ESQ.                      MARK G. BORDEN, ESQ.
KENNETH A. LINHARES, ESQ.                     PHILIP P. ROSSETTI, ESQ.
KATHERINE TALLMAN SCHUDA, ESQ.                HALE AND DORR LLP
AUSTIN M. CHOI, ESQ.                          60 STATE STREET
FENWICK & WEST LLP                            BOSTON, MASSACHUSETTS  02109
TWO PALO ALTO SQUARE                          (617) 526-6000
PALO ALTO, CALIFORNIA  94306
(650) 494-0600


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

           APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES
TO THE PUBLIC: Upon consummation of the Merger described herein.

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

           If the securities being registered on this form are being offered in
connection with the formation of a holding company and there is compliance with
General Instruction G, check the following box. [ ]

           If this form is filed to register additional securities for an
offering pursuant to Rule 462(b) under the Securities Act, check the following
box and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ] _______

           If this form is a post-effective amendment filed pursuant to Rule
462(d) under the Securities Act, check the following box and list the Securities
Act registration statement number of the earlier effective registration
statement for the same offering. [ ] _____________

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

   
           THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE
OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THIS REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID
SECTION 8(a), MAY DETERMINE.
    
<PAGE>   2

   
    
<PAGE>   3

                               OPEN SOLUTIONS INC.
                             300 WINDING BROOK DRIVE
                         GLASTONBURY, CONNECTICUT 06033


                                                                __________, 1998

Dear Stockholders:

           You are cordially invited to attend a Special Meeting of Stockholders
of Open Solutions Inc., a Delaware corporation ("OSI"), which will be held on
_____________, 1998 at __ _.m., local time, at the offices of Hale and Dorr LLP,
60 State Street, 26th Floor, Boston, Massachusetts (the "Special Meeting").

   
           At the Special Meeting, you will be asked to consider and vote upon a
proposal to approve and adopt (i) an Agreement and Plan of Reorganization, dated
September 16, 1998 (the "Merger Agreement"), among OSI, HNC Software Inc., a
Delaware corporation ("HNC") and Oahu Transaction Corp. ("Merger Sub"), a
Delaware corporation that is a newly formed, wholly-owned subsidiary of HNC,
pursuant to which Merger Sub will merge with and into OSI, with OSI surviving
the merger (the "Merger") and (ii) the Merger. Upon consummation of the proposed
Merger, each outstanding share of OSI capital stock will be converted into the
right to receive HNC Common Stock and each option to purchase OSI Common Stock
will be assumed by HNC and be converted into an option to purchase HNC Common
Stock. Based on the capitalization of OSI on September 16, 1998, and assuming
that OSI grants options to purchase 200,000 shares of OSI Common Stock before
consummation of the Merger, and that all warrants to purchase OSI capital stock
that were outstanding on September 16, 1998 are exercised in full prior to
consummation of the Merger, upon effectiveness of the Merger, (i) each
outstanding share of OSI Common Stock, OSI Series A-1 Preferred Stock, OSI
Series A-2 Preferred Stock, OSI Series B Preferred Stock, OSI Series C Preferred
Stock and OSI Series D Preferred Stock would be converted into 0.23794, 0.27594,
0.31394, 0.31394, 0.35194 and 0.38993 shares of HNC Common Stock, respectively
(subject to the elimination of fractional shares), and (ii) each outstanding
option to purchase shares of OSI Common Stock will be assumed by HNC and
converted into an option to purchase a number of shares of HNC Common Stock
equal to the number of shares of OSI Common Stock subject to such OSI option
multiplied by 0.23794 (subject to the elimination of fractional shares) at an
exercise price equal to the exercise price of such OSI option divided by
0.23794.  As a result, the stockholders of OSI would receive an aggregate of
2,507,507 shares of HNC Common Stock and all outstanding options to purchase
shares of OSI Common Stock would be assumed by HNC and converted into options to
purchase an aggregate of 449,111 shares of HNC Common Stock. Based on the
closing sale price of HNC Common Stock on December ___, 1998, the latest
practicable date before the mailing of the Proxy Statement/Prospectus, the
aggregate value of 2,507,507 shares of HNC Common Stock would be $_____________.
For accounting purposes, the Merger is intended to be treated as a "pooling of
interests," and for U.S. federal income tax purposes, the Merger is intended to
be a tax-free reorganization.
    

   
           If the requisite approval of the Merger Agreement and the Merger by
the stockholders of OSI is received and other conditions to the Merger are
satisfied or waived, the Merger is expected to be completed on or promptly after
___________, 1998.
    

           In the material accompanying this letter, you will find a Notice of
Special Meeting of Stockholders and a Proxy Statement/Prospectus relating to the
actions to be taken by OSI stockholders at the Special Meeting. In addition,
information about OSI and HNC is included in the Proxy Statement/Prospectus. I
urge you to read the Proxy Statement/Prospectus carefully.

           AFTER CAREFUL CONSIDERATION, YOUR BOARD OF DIRECTORS HAS UNANIMOUSLY
APPROVED THE MERGER AGREEMENT AND THE PROPOSED MERGER WITH HNC AND HAS CONCLUDED
THAT THE MERGER IS IN THE BEST INTERESTS OF OSI AND ITS STOCKHOLDERS.

           Approval of the Merger requires the affirmative vote of (i) the
holders of a majority of the outstanding shares of OSI Common Stock and (ii) the
affirmative vote of the holders of a majority of the outstanding shares of OSI
Preferred Stock, including a majority of the outstanding shares of OSI Series B
Preferred Stock and a majority of the outstanding shares of OSI Series C
Preferred Stock. Your participation in the Special Meeting, in person or by
proxy, is therefore especially important. WHETHER OR NOT YOU PLAN TO ATTEND THE
SPECIAL MEETING IN PERSON, PLEASE COMPLETE, SIGN, DATE AND PROMPTLY RETURN THE
ENCLOSED PROXY CARD IN THE ENVELOPE PROVIDED. YOUR BOARD OF DIRECTORS RECOMMENDS
THAT YOU VOTE FOR APPROVAL OF THE MERGER AGREEMENT AND THE MERGER.

   
           Holders of OSI Common Stock and OSI Preferred Stock may, by complying
with Section 262 of the Delaware General Corporation Law, be entitled to a
judicial determination of the "fair value" of their shares (exclusive of any
element of value arising from the accomplishment or expectation of the Merger)
and to receive from OSI payment of such fair value in cash. Section 262 of the
Delaware General Corporation Law, which governs such rights of dissenting
stockholders, is summarized in the Proxy Statement/Prospectus under "Approval of
the Merger-Appraisal Rights" and reproduced at Appendix B to the Proxy Statement
/Prospectus.
    

   
           We look forward to the successful combination of OSI and HNC and your
continuing support as a stockholder.
    
                              Sincerely,
   
                              Douglas K. Anderson
                              Chairman of the Board of Directors
                              and Chief Executive Officer
    



<PAGE>   4

                               OPEN SOLUTIONS INC.
                             300 WINDING BROOK DRIVE
                         GLASTONBURY, CONNECTICUT 06033

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

                    NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

To the Stockholders of Open Solutions Inc.:

           NOTICE IS HEREBY GIVEN that a Special Meeting of Stockholders (the
"Special Meeting") of Open Solutions Inc., a Delaware corporation ("OSI"), will
be held at the offices of Hale and Dorr LLP, 60 State Street, 26th Floor,
Boston, Massachusetts 02109 on _________________, 1998 at ______ __.m., local
time, for the following purposes:

1.         To consider and vote upon the approval and adoption of an Agreement
           and Plan of Reorganization, dated as of September 16, 1998 (the
           "Merger Agreement"), by and among OSI, HNC Software Inc., a Delaware
           corporation ("HNC") and Oahu Transaction Corp., a Delaware
           corporation and a wholly-owned subsidiary of HNC ("Merger Sub"), and
           the merger of Merger Sub with and into OSI pursuant to the Merger
           Agreement (the "Merger").

2.         To transact such other business as may properly come before the
           Special Meeting or any adjournment or postponement thereof.

   
           The Merger Agreement contemplates, among other things, that: (i)
Merger Sub will be merged with and into OSI, with the result that OSI will
become a wholly-owned subsidiary of HNC; and (ii) each outstanding share of OSI
capital stock will be converted into the right to receive HNC Common Stock and
each outstanding option to purchase OSI Common Stock will be assumed by HNC and
be converted into an option to purchase HNC Common Stock. The number of shares
of HNC Common Stock that will be issued in the Merger, plus the number of shares
of HNC Common Stock issuable upon exercise of HNC Options that are issued in the
Merger, will not exceed a total of 2,956,618 shares of HNC Common Stock. Based
on the capitalization of OSI on September 16, 1998, and assuming that OSI grants
options to purchase 200,000 shares of OSI Common Stock before consummation of
the Merger, and that all warrants to purchase OSI capital stock that were
outstanding on September 16, 1998 are exercised in full prior to consummation of
the Merger, upon effectiveness of the Merger, (i) each outstanding share of OSI
Common Stock, OSI Series A-1 Preferred Stock, OSI Series A-2 Preferred Stock,
OSI Series B Preferred Stock, OSI Series C Preferred Stock and OSI Series D
Preferred Stock would be converted into 0.23794, 0.27594, 0.31394, 0.31394,
0.35194 and 0.38993 shares of HNC Common Stock, respectively (subject to the
elimination of fractional shares) and (ii) each outstanding option to purchase
shares of OSI Common Stock will be assumed by HNC and converted into an option
to purchase a number of shares of HNC Common Stock equal to the number of shares
of OSI Common Stock subject to such OSI option multiplied by 0.23794 (subject to
the elimination of fractional shares), at an exercise price equal to the
exercise price of such OSI option divided by 0.23794.
    

           The OSI Board of Directors recommends that the OSI stockholders vote
FOR approval of the Merger Agreement and the Merger.

           The Merger Agreement is attached as Appendix A to the accompanying
Proxy Statement/Prospectus. The Proxy Statement/Prospectus and the Appendices
thereto form a part of this Notice.

           The foregoing items of business are more fully described in the Proxy
Statement/Prospectus accompanying this Notice. To ensure that your vote will be
counted, please complete, date and sign the enclosed proxy card and return it
promptly in the enclosed postage-paid envelope, whether or not you plan to
attend the Special Meeting. You may revoke your proxy in the manner described in
the accompanying Proxy Statement/Prospectus at any time before it is voted at
the Special Meeting.

           Holders of OSI Common Stock and OSI Preferred Stock may, by complying
with Section 262 of the Delaware General Corporation Law, be entitled to
appraisal rights with respect to the Merger. SECTION 262 OF THE DELAWARE 


<PAGE>   5

GENERAL CORPORATION LAW, WHICH GOVERNS THE RIGHTS OF DISSENTING STOCKHOLDERS, IS
SUMMARIZED IN THE PROXY STATEMENT/PROSPECTUS UNDER "APPROVAL OF THE
MERGER-APPRAISAL RIGHTS" AND REPRODUCED AT APPENDIX B TO THE ACCOMPANYING PROXY
STATEMENT/PROSPECTUS.

           Only OSI stockholders of record at the close of business on
___________, 1998 are entitled to notice of and to vote at the Special Meeting
or at any adjournment or postponement thereof.

                               By Order of the Board of Directors,



   
                               Douglas K. Anderson
                               Chairman of the Board of Directors 
                               and Chief Executive Officer
    

Glastonbury, Connecticut
________________, 1998

WHETHER OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING, PLEASE COMPLETE, DATE,
SIGN AND PROMPTLY RETURN THE ACCOMPANYING PROXY IN THE ENCLOSED POSTAGE-PAID
ENVELOPE SO THAT YOUR SHARES MAY BE REPRESENTED AT THE SPECIAL MEETING.



<PAGE>   6


OPEN SOLUTIONS INC.                                            HNC SOFTWARE INC.

PROXY STATEMENT                                                       PROSPECTUS

                           _____________________, 1998


       This Proxy Statement/Prospectus is being furnished to the stockholders of
Open Solutions Inc., a Delaware corporation ("OSI"), in connection with the
solicitation of proxies by the OSI Board of Directors (the "OSI Board") for use
at a Special Meeting of OSI Stockholders (the "Special Meeting") to be held at
______ __.m., local time, on ____________, 1998, at the offices of Hale and Dorr
LLP, 60 State Street, 26th Floor, Boston, Massachusetts 02109, and at any
adjournments or postponements of the Special Meeting.

       The Special Meeting has been called to (i) approve and adopt the
Agreement and Plan of Reorganization, dated as of September 16, 1998 (the
"Merger Agreement"), by and among OSI, HNC Software Inc., a Delaware corporation
("HNC"), and Oahu Transaction Corp., a Delaware corporation and a wholly-owned
subsidiary of HNC ("Merger Sub"), whereby Merger Sub will merge with and into
OSI (the "Merger") and (ii) to approve the Merger.

   
       This Proxy Statement/Prospectus constitutes the Prospectus of HNC for use
in connection with the offer and issuance of shares of Common Stock, $0.001 par
value, of HNC ("HNC Common Stock"), to be issued to the stockholders of OSI upon
completion of the Merger. Pursuant to the Merger: (i) each share of Common
Stock, $0.01 par value, of OSI ("OSI Common Stock"); (ii) each share of Series
A-1 Preferred Stock of OSI, $0.01 par value ("OSI Series A-1 Preferred Stock");
(iii) each share of Series A-2 Preferred Stock of OSI, $0.01 par value ("OSI
Series A-2 Preferred Stock"); (iv) each share of Series B Preferred Stock of
OSI, $0.01 par value ("OSI Series B Preferred Stock"); (v) each share of Series
C Preferred Stock of OSI, $0.01 par value ("OSI Series C Preferred Stock"); and
(vi) each share of Series D Preferred Stock of OSI, $0.01 par value ("OSI Series
D Preferred Stock") that is issued and outstanding immediately prior to
consummation of the Merger will be converted into the right to receive HNC
Common Stock. In addition, each option to purchase OSI Common Stock ("OSI
Option") that is outstanding immediately prior to consummation of the Merger
will be assumed by HNC and converted into an option to purchase a number of
shares of HNC Common Stock (an "HNC Option") equal to the number of shares of
OSI Common Stock subject to such OSI Option, multiplied by the number of shares
of HNC Common Stock into which one share of OSI Common Stock will be converted
in the Merger (the "Participation Number"), at an exercise price equal to the
exercise price of such OSI Option divided by the Participation Number. The
number of shares of HNC Common Stock to be issued to the holders of OSI capital
stock will vary depending upon the number of shares of OSI capital stock and the
number of shares subject to OSI Options that are outstanding immediately prior
to consummation of the Merger. See "Terms of the Merger--Manner and Basis of
Converting OSI Shares."

       Assuming that, immediately prior to the effectiveness of the Merger,
2,236,013 shares of OSI Common Stock, 1,000,000 shares of OSI Series A-1
Preferred Stock, 583,333 shares of OSI Series A-2 Preferred Stock, 1,736,250
shares of OSI Series B Preferred Stock, 1,375,000 shares of OSI Series C
Preferred Stock and 1,250,000 shares of OSI Series D Preferred Stock are then
outstanding, and OSI Options to purchase an aggregate of 1,887,500 shares are
then outstanding, then based on the Merger conversion formula (which takes into
account the merger preferences of each series of OSI Preferred Stock under OSI's
Certificate of Incorporation), (i) each then outstanding share of OSI Common
Stock, OSI Series A-1 Preferred Stock, OSI Series A-2 Preferred Stock, OSI
Series B Preferred Stock, OSI Series C Preferred Stock and OSI Series D
Preferred Stock would be converted into the right to receive 0.23794, 0.27594,
0.31394, 0.31394, 0.35194 and 0.38993 shares of HNC Common Stock, respectively
(subject to the elimination of fractional shares) and (ii) each then outstanding
OSI Option to purchase one share of OSI Common Stock would be converted into an
HNC Option to purchase 0.23794 shares of HNC Common Stock (subject to the
elimination of fractional shares). This would result in the issuance by HNC of a
total of 2,507,507 shares of HNC Common Stock (subject to the elimination of
fractional shares) and HNC Options to purchase up to approximately 449,111
shares of HNC Common Stock (subject to the elimination of fractional shares).
Based on the closing sale price of HNC Common Stock on December ___, 1998, the
latest practicable date before the mailing of this Proxy Statement/Prospectus,
the aggregate value of 2,507,507 shares of HNC Common Stock would be
$____________.

       The above example is based on OSI's capitalization as of September 16,
1998, and assumes that after September 16, 1998 and prior to consummation of the
Merger, (i) all warrants to purchase shares of OSI capital stock that were
outstanding on September 16, 1998 are exercised in full, and (ii) OSI grants OSI
Options to purchase an additional 200,000 shares of OSI Common Stock.

       The number of shares of HNC Common Stock to be issued in the Merger plus
the number of shares of HNC Common Stock issuable upon exercise of HNC Options
issued in the Merger is fixed at 2,956,618 shares of HNC Common Stock and will
not exceed such number. The capitalization of OSI is not expected to change
before consummation of the Merger, except that OSI expects that all warrants to
purchase shares of OSI capital stock that were outstanding on September 16, 1998
will be exercised in full and OSI Options to purchase an additional 200,000
shares of OSI Common Stock will be granted. However, if there are any other
changes to the capitalization of OSI before consummation of the Merger, the
number of shares of HNC Common Stock to be received by holders of each class and
series of OSI capital stock in the Merger and the number of shares of HNC Common
Stock issuable upon exercise of HNC Options issued in the Merger will change.
    

   
OSI stockholders will be informed of the exact number of shares of HNC Common
Stock they will receive after the Special Meeting. The parties anticipate that
the Merger will become effective immediately after the Special Meeting.

       Because the number of shares of HNC Common Stock to be issued in the
Merger, plus the number of shares of HNC Common Stock issuable upon exercise of
HNC Options to be issued in the Merger is fixed, changes in the market price of
HNC Common Stock will affect the dollar value of HNC Common Stock to be received
by stockholders of OSI in the Merger. As a result, the exact value of the shares
of HNC Common Stock to be received by OSI stockholders in the Merger will not be
known at the time of the Special Meeting. OSI stockholders are encouraged to
obtain current market quotations for HNC Common Stock prior to the Special
Meeting. The current market quotations for the HNC Common Stock may be obtained
on the Internet at http://www.nasdaq.com. On __________, 1998, the closing sale
price on the Nasdaq National Market of HNC Common Stock was $______________ per
share.
    

       This Proxy Statement/Prospectus and the accompanying form of proxy are
first being mailed to stockholders of OSI on or about ____________, 1998.

       Holders of OSI Common Stock and OSI Preferred Stock may, by complying
with Section 262 of the Delaware General Corporation Law, be entitled to
appraisal rights with respect to the Merger. See "Approval of the
Merger--Appraisal Rights."

       THE  ABOVE  MATTERS  ARE  DISCUSSED  IN  DETAIL IN THIS  PROXY  
STATEMENT/PROSPECTUS. THE PROPOSED MERGER IS A COMPLEX TRANSACTION. STOCKHOLDERS
ARE URGED TO READ AND CONSIDER CAREFULLY THIS PROXY STATEMENT/PROSPECTUS IN ITS
ENTIRETY, PARTICULARLY THE MATTERS REFERRED TO UNDER "RISK FACTORS" COMMENCING
ON PAGE _____.

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

     THE SECURITIES TO BE ISSUED PURSUANT TO THIS PROXY STATEMENT/PROSPECTUS
      HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE
      COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
           AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
               PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROXY
                 STATEMENT/PROSPECTUS. ANY REPRESENTATION TO THE
                         CONTRARY IS A CRIMINAL OFFENSE.

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

     The date of this Proxy Statement/Prospectus is _________________, 1998.




<PAGE>   7


                                TABLE OF CONTENTS

   
<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>                                                                                        <C>
AVAILABLE INFORMATION....................................................................       1
TRADEMARKS...............................................................................       1
FORWARD-LOOKING STATEMENTS...............................................................       2

SUMMARY..................................................................................       3
      The Companies......................................................................       3
      The OSI Special Meeting............................................................       4
      Recommendation of the OSI Board....................................................       4
      Risk Factors   ....................................................................       4
      Reasons for the Merger.............................................................       5
      Certain Federal Income Tax Consequences............................................       6
      Accounting Treatment...............................................................       6
      Government and Regulatory Approvals................................................       6
      Appraisal Rights...................................................................       6
      Interests of Certain Persons in the Merger.........................................       6
      Terms of the Merger................................................................       7
      Liquidated Damages.................................................................      10
      Indemnification and Escrow.........................................................      10
      Related Agreements.................................................................      11
      Market Prices and Dividends........................................................      12
           Market Prices.................................................................      12
           Dividends ....................................................................      13
      Comparative Per Share Data.........................................................      14

RISK FACTORS.............................................................................      15
      Risks Relating to the Merger ......................................................      15
      Risks Relating to HNC .............................................................      17
      Risks Relating to OSI .............................................................      25

THE OSI SPECIAL MEETING..................................................................      31
      Date, Time, Place and Purpose......................................................      31
      Record Date and Outstanding Shares.................................................      31
      Voting of Proxies..................................................................      31
      Vote Required; Quorum..............................................................      31
      Solicitation of Proxies and Expenses...............................................      32
      Appraisal Rights...................................................................      32
      Recommendation of the OSI Board....................................................      32

APPROVAL OF THE MERGER...................................................................      33
      HNC's Reasons for the Merger.......................................................      33
      OSI's Reasons for the Merger.......................................................      34
      Background of the Merger ..........................................................      36
      Material Federal Income Tax Consequences of the Merger.............................      38
      Accounting Treatment...............................................................      39
      Government and Regulatory Approvals................................................      39
      Appraisal Rights...................................................................      40
      Interests of Certain Persons in the Merger.........................................      42

TERMS OF THE MERGER......................................................................      44
      Effective Time.....................................................................      44
      Manner and Basis of Converting OSI Shares..........................................      44
      Assumption and Conversion of OSI Stock Options.....................................      47
      Stock Ownership Immediately Following the Merger...................................      48
      Effects of the Merger..............................................................      48
      Representations and Warranties.....................................................      48
      Conduct of Business Pending the Merger.............................................      49
</TABLE>
    


<PAGE>   8

   
<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>                                                                                        <C>

      Non-Solicitation...................................................................      50
      Conditions to the Merger...........................................................      50
      Termination, Amendment and Waiver..................................................      52
      Liquidated Damages.................................................................      53
      Indemnification and Escrow.........................................................      53
      Related Agreements.................................................................      54

UNAUDITED PRO FORMA COMBINED CONSOLIDATED FINANCIAL INFORMATION..........................      56

HNC SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA......................................      64

HNC SELECTED HISTORICAL CONSOLIDATED QUARTERLY OPERATING RESULTS.........................      65

HNC MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS  
      OF OPERATIONS......................................................................      66
      Overview...........................................................................      66
      Potential Fluctuations in Operating Results........................................      67
      Results of Operations..............................................................      67
      Liquidity and Capital Resources....................................................      72
      Year 2000 Compliance...............................................................      72
      New Accounting Pronouncements......................................................      73

BUSINESS OF HNC..........................................................................      74
      Industry Background................................................................      74
      The HNC Solution...................................................................      75
      HNC's Strategy.....................................................................      75
      Markets and Products...............................................................      76
      Emerging Market Opportunities......................................................      79
      Customer Service and Support.......................................................      80
      Pricing............................................................................      80
      Sales and Marketing................................................................      80
      Technology.........................................................................      81
      Research and Development...........................................................      82
      Intellectual Property and Other Proprietary Rights.................................      83
      Competition........................................................................      84
      Employees..........................................................................      85
      Properties.........................................................................      85

OSI SELECTED HISTORICAL FINANCIAL DATA...................................................      86

OSI MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
      OF OPERATIONS......................................................................      87
      Overview...........................................................................      87
      Results of Operations..............................................................      88
      Selected Quarterly Results of Operations...........................................      93
      Liquidity and Capital Resources....................................................      94

BUSINESS OF OSI..........................................................................      95
      Industry Background................................................................      95
      The OSI Solution...................................................................      96
      Strategy...........................................................................      96
      Technology.........................................................................      97
      Products...........................................................................      98
      Sales and Marketing................................................................     100
      Customers..........................................................................     100
      Services...........................................................................     101
      Product Development................................................................     101
      Competition........................................................................     101

</TABLE>
    

                                      -ii-

<PAGE>   9

<TABLE>
<CAPTION>
                                                                                              PAGE
                                                                                              ----
<S>                                                                                        <C>

      Intellectual Property and Other Proprietary Rights.................................     102
      Employees..........................................................................     102
      Facilities.........................................................................     102

MANAGEMENT OF HNC........................................................................     103
      Executive Officers and Directors...................................................     103
      Committees of the Board of Directors...............................................     104
      Compensation Committee Interlocks and Insider Participation........................     104
      Director Compensation..............................................................     105
      Executive Compensation.............................................................     105

SECURITY OWNERSHIP OF HNC................................................................     107

CERTAIN TRANSACTIONS OF HNC..............................................................     109

MANAGEMENT OF OSI........................................................................     110
      Executive Officers, Directors and Key Employees....................................     110
      Committees of the Board of Directors...............................................     112
      Director Compensation..............................................................     112
      Executive Compensation.............................................................     112
      Employment Agreements..............................................................     114
      Compensation Committee Interlocks and Insider Participation........................     115

SECURITY OWNERSHIP OF OSI................................................................     116

CERTAIN TRANSACTIONS OF OSI..............................................................     119

DESCRIPTION OF HNC CAPITAL STOCK.........................................................     121
      HNC Common Stock...................................................................     121
      Preferred Stock....................................................................     121
      Delaware General Corporation Law Section 203.......................................     121
      Existing Shelf Registrations.......................................................     121
      Transfer Agent and Registrar.......................................................     122

DESCRIPTION OF OSI CAPITAL STOCK.........................................................     123
      Common Stock.......................................................................     123
      Preferred Stock....................................................................     123
      Warrants...........................................................................     124

COMPARISON OF RIGHTS OF OSI STOCKHOLDERS AND HNC STOCKHOLDERS............................     125
      Size of the Board of Directors.....................................................     125
      "Blank Check" Preferred Stock and Common Stock Rights..............................     125
      Percentage of Voting Stock; Influence Over Affairs.................................     125
      Transactions With Interested Stockholders..........................................     125

OTHER BUSINESS ..........................................................................     126

LEGAL MATTERS............................................................................     126

INDEX TO FINANCIAL STATEMENTS............................................................     F-1


APPENDICES
      Appendix A Agreement and Plan of Reorganization
      Appendix B Section 262 of the Delaware General Corporation Law

</TABLE>

                                     -iii-

<PAGE>   10

       NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATION NOT CONTAINED IN THIS PROXY STATEMENT/PROSPECTUS IN CONNECTION
WITH THE SOLICITATION OF PROXIES OR THE OFFERING OF SECURITIES MADE HEREBY AND,
IF GIVEN OR MADE, SUCH INFORMATION OR REPRESENTATION MUST NOT BE RELIED UPON AS
HAVING BEEN AUTHORIZED. THIS PROXY STATEMENT/PROSPECTUS DOES NOT CONSTITUTE AN
OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY THE SECURITIES OFFERED BY
THIS PROXY STATEMENT/PROSPECTUS OR A SOLICITATION OF A PROXY IN ANY JURISDICTION
WHERE, OR TO ANY PERSON TO WHOM, IT WOULD BE UNLAWFUL TO MAKE SUCH AN OFFER OR
SOLICITATION.

       NEITHER THE DELIVERY OF THIS PROXY STATEMENT/PROSPECTUS NOR ANY
DISTRIBUTION OF THE SECURITIES TO WHICH THIS PROXY STATEMENT/PROSPECTUS RELATES
SHALL, UNDER ANY CIRCUMSTANCES, CREATE AN IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE INFORMATION CONTAINED HEREIN SINCE THE DATE HEREOF.

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

                              AVAILABLE INFORMATION

   
           HNC is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance
therewith files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). The materials filed by
HNC can be inspected and copied at the public reference facilities maintained by
the Commission at Room 1024, 450 Fifth Street, N.W., Washington, D.C. 20549 and
at the Commission's regional offices at 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661 and 7 World Trade Center, Suite 1300, New York, New York
10048. Copies of these materials can also be obtained from the Commission at
prescribed rates by writing to the Public Reference Section of the Commission,
450 Fifth Street, N.W., Washington, D.C. 20549. The Commission maintains a World
Wide Web site at the address http://www.sec.gov that contains reports, proxy
statements and other information regarding registrants that file electronically
with the Commission. HNC Common Stock is quoted on the Nasdaq National Market
under the symbol "HNCS," and such reports, proxy statements and other
information can also be inspected at the offices of Nasdaq Operations, 1735 K
Street, N.W., Washington, D.C. 20006.

           HNC has filed with the Commission a Registration Statement on Form
S-4 (together with all amendments and exhibits, the "Registration Statement")
under the Securities Act of 1933, as amended (the "Securities Act"). This Proxy
Statement/Prospectus constitutes the prospectus of HNC that is filed as part of
the Registration Statement. Other parts of the Registration Statement are
omitted from this Proxy Statement/Prospectus in accordance with the rules and
regulations of the Commission. Copies of the Registration Statement, including
the exhibits and other material that is not included herein, may be inspected,
without charge, at the regional offices of the Commission referred to above,
obtained at the Commission's World Wide Web site set forth above or obtained at
prescribed rates from the Public Reference Section of the Commission at the
address set forth above.

           Statements made in this Proxy Statement/Prospectus concerning the
contents of any contract or other document are not necessarily complete. With
respect to each contract or other document filed as an exhibit to, or
incorporated by reference in, the Registration Statement, reference is hereby
made to that exhibit for a more complete description of the matter involved, and
each such statement is hereby qualified in its entirety by such reference.

           All information contained in this Proxy Statement/Prospectus relating
to HNC has been supplied by HNC, and all information relating to OSI has been
supplied by OSI.
    


                                   TRADEMARKS

   
           This Proxy Statement/Prospectus contains trademarks of HNC and OSI,
and may contain trademarks of others, in the U.S. and other countries.
ProfitMax(R) is a registered trademark of HNC. CRLink(TM), CompCompare(TM),
ProviderCompare(TM), PMAdvisor(TM), AUTOADVISOR(TM), COMPADVISOR(TM),
VeriComp(TM), MIRA(TM), FALCON(TM), Falcon Expert(TM), Falcon Select(TM), Falcon
Debit(TM), Falcon Retail(TM), Falcon Sentry(TM), Eagle(TM), Capstone(TM),
Capstone for Payment Cards(TM), Capstone for Consumer Lending(TM), Capstone for
Mortgage Lending(TM), ProfitMax Bankruptcy(TM), Retek Merchandising
System(TM), Retek Data Warehouse(TM), Active Retail Intelligence(TM), Retek
Demand 
    



                                       1
<PAGE>   11
   
Forecasting(TM), Retek Trade Management(TM), RETEk Warehouse Management(TM),
Retek Collaborative Supply(TM), Retek Sales Audit(TM), Retek Invoice
Matching(TM), Retek Store Systems-RF(TM), MatchPlus(TM), SelectCast(TM),
SelectProfile(TM), SelectResponse(TM) and SelectResource(TM) are trademarks of
HNC. Open Solutions Inc.(R) is a registered trademark of OSI. The Complete
Banking Solution(TM) and The Complete Credit Union Solution(TM) are trademarks
of OSI.
    

                           FORWARD-LOOKING STATEMENTS

           This Proxy Statement/Prospectus contains forward-looking statements
within the meaning of Section 27A of the Securities Act and Section 21E of the
Exchange Act regarding HNC and OSI. Words such as "expects," "anticipates,"
"intends," "plans," "believes," "seeks," "estimates" and similar expressions or
variations of such words are intended to identify forward-looking statements,
but are not the exclusive means of identifying forward-looking statements in
this Proxy Statement/Prospectus. Additionally, statements concerning future
matters are forward-looking statements.

           Although forward-looking statements in this Proxy
Statement/Prospectus reflect the good faith judgment of the management of HNC
and OSI, as appropriate, such statements can only be based on facts and factors
currently known by HNC and OSI, respectively. Consequently, forward-looking
statements are inherently subject to risks and uncertainties and actual results
and outcomes may differ materially from the results and outcomes discussed in or
anticipated by the forward-looking statements. Factors that could cause or
contribute to such differences in results and outcomes include without
limitation those discussed in "Risk Factors" as well as those discussed
elsewhere in this Proxy Statement/Prospectus. Readers are urged not to place
undue reliance on these forward-looking statements, which speak only as of the
date of this Proxy Statement/Prospectus. Neither HNC nor OSI undertakes any
obligation to revise or update any forward-looking statements in order to
reflect any event or circumstance that may arise after the date of this Proxy
Statement/Prospectus. Readers are urged to carefully review and consider the
various disclosures made in this Proxy Statement/Prospectus, which attempt to
advise interested parties of the risks and factors that may affect HNC's and
OSI's respective business, financial condition, results of operations and
prospects.




                                       2
<PAGE>   12

                                    SUMMARY

           The following is a brief summary of certain information contained
elsewhere in this Proxy Statement/Prospectus. The summary does not contain a
complete description of the terms of the Merger and is qualified in its entirety
by reference to the full text of this Proxy Statement/Prospectus and the
Appendices hereto. Stockholders of OSI are urged to read this Proxy
Statement/Prospectus and the Appendices hereto in their entirety.

THE COMPANIES

           HNC Software Inc. HNC develops, markets and supports predictive
software solutions for leading service industries. These predictive software
solutions employ proprietary neural-network predictive decision engines,
profiles, traditional statistical modeling, business models, expert rules and
context vectors to convert existing data and business experiences into
meaningful recommendations and actions. HNC was founded in 1986 under the laws
of California and was reincorporated in June 1995 under the laws of Delaware.
HNC's principal executive offices are located at 5930 Cornerstone Court West,
San Diego, California 92121-3728, and its telephone number is (619) 546-8877.
See "Business of HNC."

   
           Open Solutions Inc. OSI provides client/server core processing
software and related services to small to mid-size banks and credit unions. OSI
has developed The Complete Banking Solution and The Complete Credit Union
Solution (either, the "OSI System"), which are fully-integrated suites of
banking and credit union applications that operate in a Microsoft Windows NT
environment with an Oracle relational database. OSI's software supports all of
an institution's core processing requirements, including deposits and loans,
teller functions, home/Internet banking and platform automation. The OSI System
interfaces to third-party applications that are commonly used in banks and
credit unions, including check processing, ATMs and general ledger applications.
OSI was organized as a Delaware corporation in 1992. OSI's principal offices are
located at 300 Winding Brook Drive, Glastonbury, Connecticut 06033 and its
telephone number is (860) 652-3155. See "Business of OSI."
    

           Oahu Transaction Corp. Merger Sub, a Delaware corporation, was
incorporated in September 1998 for the sole purpose of effecting the Merger. It
has no material assets and has not engaged in any activities except in
connection with the proposed Merger. Merger Sub's principal executive offices
are located at 5930 Cornerstone Court West, San Diego, California 92121-3728,
and its telephone number is (619) 546-8877.

THE OSI SPECIAL MEETING

           Date, Time, Place and Purpose. The Special Meeting will be held at
the offices of Hale and Dorr LLP, 60 State Street, 26th Floor, Boston,
Massachusetts 02109 on __________________, 1998 at _________ ___.m., local time.
At the Special Meeting, stockholders of OSI will be asked to approve and adopt
the Merger Agreement and the transactions contemplated thereby and to approve
the Merger. The Merger Agreement is attached hereto as Appendix A. See "Terms of
the Merger."

   
           Record Date and Outstanding Shares. Holders of record of OSI Common
Stock and OSI Preferred Stock at the close of business on ___________, 1998 (the
"Record Date") are entitled to notice of and to vote at the Special Meeting. As
of the close of business on the Record Date, there were 2,236,013 shares of OSI
Common Stock, 1,000,000 shares of OSI Series A-1 Preferred Stock, 583,333 
shares of OSI Series A-2 Preferred Stock, 1,627,917 shares of OSI Series B
Preferred Stock, 1,263,889 shares of OSI Series C Preferred Stock and 833,333
shares of OSI Series D Preferred Stock, outstanding and entitled to vote, held
of record by a total of 40 stockholders. Each holder of OSI Common Stock is
entitled to one vote for each share of OSI Common Stock held as of the Record
Date and each holder of OSI Preferred Stock is entitled to the number of votes
equal to the number of shares of OSI Common Stock issuable upon a conversion of
such OSI Preferred Stock held as of the Record Date. See "The OSI Special
Meeting--Record Date and Outstanding Shares."

           Vote Required; Quorum. Approval and adoption of the Merger Agreement
and the Merger by OSI's stockholders requires the affirmative vote of the
holders of a majority of the outstanding shares of OSI Common Stock and the
affirmative vote of the holders of a majority of the outstanding shares of OSI
Preferred Stock, including a majority of the outstanding shares of OSI Series B
Preferred Stock and a majority of the outstanding shares of OSI Series C
Preferred Stock. Abstentions will thus have the effect of a vote against the
Merger
    



                                       3
<PAGE>   13

Agreement and the Merger. The required quorum for the transaction of business at
the Special Meeting is a majority of the shares of OSI Common Stock and OSI
Preferred Stock outstanding on the Record Date. Abstentions will be considered
present at the Special Meeting for the purpose of determining a quorum.

   
           Certain stockholders who are or may be affiliates of OSI,
beneficially owning 875,000 shares of OSI Common Stock and 4,747,361 shares of
OSI Preferred Stock, or approximately 39.1% and 89.4% of the outstanding shares
of OSI Common Stock and OSI Preferred Stock, respectively, have executed voting
agreements pursuant to which they have agreed to vote such shares in favor of
the adoption and approval of the Merger Agreement and approval of the Merger.

           On the Record Date, directors and executive officers of OSI, and
their affiliated entities, as a group beneficially owned ____ shares of OSI
Common Stock and _____ shares of OSI Preferred Stock, or approximately ____% and
____% of the outstanding shares of OSI Common Stock and OSI Preferred Stock,
respectively, on such date. See "The OSI Special Meeting--Vote Required;
Quorum."
    

RECOMMENDATION OF THE OSI BOARD

   
           The OSI Board, by unanimous vote, has adopted and approved the Merger
Agreement and the transactions contemplated thereby, has determined that the
Merger is in the best interests of OSI and its stockholders and has approved the
Merger. After careful consideration, the OSI Board unanimously recommends a vote
FOR adoption and approval of the Merger Agreement and the Merger. See "The OSI
Special Meeting -- Recommendation of the OSI Board."
    

RISK FACTORS

   
           The following Risk Factors, among others set forth under "Risk
Factors" below and elsewhere in this Proxy Statement/Prospectus,
should be considered by OSI stockholders in evaluating the matters to be voted
on at the Special Meeting and the acquisition of the shares of HNC Common Stock
offered hereby.
    

           Risks related to the Merger include the following: (i) that the
anticipated long-term strategic benefits of the Merger depend upon the
successful integration of OSI into HNC's business; (ii) that HNC will depend on
the continued service of the current management of OSI after the Merger; (iii)
that the price of HNC Common Stock would be significantly and adversely affected
if the beneficial synergies that the Merger is intended to generate are not
achieved or do not occur as rapidly or to the extent anticipated; (iv) that the
Merger is expected to result in substantial Merger-related expenses, and that
the integration of OSI into HNC's business may involve substantial additional
costs; (v) that the inherent risks of the Merger may be compounded by ongoing
efforts associated with the integration of other recent acquisitions by HNC and
by the geographically dispersed operations of HNC and OSI; (vi) that the Merger
Agreement does not provide for any adjustment of the number of shares of HNC
Common Stock and the number of shares covered by HNC Options to be issued in the
Merger to account for changes in the price of HNC Common Stock; (vii) that the
Merger will reduce the respective interests of the HNC and OSI stockholders
after the Merger, compared to their ownership interests in their respective
companies before the Merger; and (viii) that if certain restrictions are not
observed by each company and its respective affiliates, the Merger may fail to
qualify as a pooling of interests for financial reporting purposes. See "Risk
Factors--Risks Relating to the Merger."

           Risks relating to HNC include the following: (i) that HNC has
experienced, and expects to continue to experience, significant fluctuations in
its results of operations on a quarterly and on an annual basis; (ii) that the
sales cycle associated with HNC's products is typically lengthy and orders are
therefore subject to a number of significant risks; (iii) that HNC has recently
completed a number of acquisitions and may pursue acquisitions in the future;
(iv) that HNC faces risks in managing any growth in its business; (v) that the
markets for HNC's products are still emerging and are subject to rapid
technological change, competing technologies, evolving industry standards and
frequent new product introductions; (vi) that HNC has one product or product
line in each of its three target markets that accounts for a majority of its
total revenues from that market; (vii) that HNC depends upon the availability of
data for the development, installation and support of certain of its products;
(viii) that the markets in which HNC competes are intensely competitive and many
competitors of HNC are substantially larger and have greater financial,
technical, marketing and other resources than HNC and broader integrated product
lines; (ix) that HNC depends on its ability to hire and retain qualified
personnel; (x) that HNC is subject to the risks inherent in international
sales; (xi) that HNC's customers are subject to a number of government
regulations and other industry standards with which many of HNC's products must
comply; (xii) that HNC


                                       4
<PAGE>   14


depends on proprietary technology, which it may not be able to protect fully or
which may be subject to litigation; (xiii) that products as complex as those
offered by HNC frequently contain undetected error or failures that could result
in product returns and other losses to HNC or its customers, including problems
relating to Year 2000 compliance; and (xiv) that the market price of HNC Common
Stock is volatile and subject to fluctuations in response to a variety of
factors. See Risk Factors--Risks Relating to HNC."

   
           Risks relating to OSI include the following: (i) that OSI has a
limited operating history, has not been profitable and has an accumulated
deficit; (ii) that OSI has experienced, and expects to continue to experience,
significant fluctuations in its results of operations on a quarterly and on an
annual basis; (iii) that OSI depends on the OSI System for substantially all of
its revenue; (iv) that the markets for OSI's products are subject to rapid
technological change, evolving industry standards and frequent new product
introductions and that OSI depends on its ability to timely release new and
upgraded version of its products; (v) that the market in which OSI competes is
intensely competitive and many competitors of OSI are substantially larger and
have greater financial, engineering, technical, marketing and other resources
than OSI; (vi) that OSI faces risks in managing any growth in its business;
(vii) that OSI relies on license fees from new customers for a substantial
portion of its revenues, including new credit union customers; (viii) that OSI
is subject to the risks faced by small to mid-size banks and credit unions and
there is a trend toward consolidation in that industry; (ix) that the sales
cycle associated with OSI's products is typically lengthy and orders are
therefore subject to a number of significant risks; (x) that OSI must expand its
sales force and its third-party outsourcing agreements to achieve future revenue
growth; (xi) that OSI depends on its ability to hire and retain qualified
personnel; (xii) that OSI depends on certain third-party technology; (xiii) that
a limited number of customers account for a significant percentage of OSI's
revenues; (xiv) that OSI may be subject to service warranty costs or claims for
damages by customers as a result of failure in a customer's system or Year 2000
compliance problems; (xv) that OSI's customers are subject to a number of
government regulations and other industry standards with which many of OSI's
products must comply; and (xvi) that OSI depends on proprietary technology,
which it may not be able to protect fully or which may be subject to litigation.
See "Risk Factors--Risks Relating to OSI."
    

REASONS FOR THE MERGER

   
           HNC's Reasons for the Merger. The HNC Board approved the Merger
because it believes that: (i) the Merger will give HNC the opportunity to
diversify its market focus to include small to mid-size banks and credit unions,
which HNC views as a strategic market; (ii) HNC's existing intelligent decision
products (many of which are designed to serve the needs of banks or similar
financial institutions) are well positioned to serve OSI's current customer
base; (iii) by acquiring OSI, HNC will acquire the ability to market an
integrated range of core products to banks and credit unions, with the strategy
of providing these customers a single source for all their core applications
software needs; (iv) the Merger will provide the opportunity for HNC to create
an integrated infrastructure solution that emphasizes predictive customer
relationship management by combining the core products of HNC's Financial 
Technology, Inc. ("FTI") subsidiary (as well as other HNC
financial solutions products) with the OSI System; (v) the Merger will provide
FTI and OSI with the ability to integrate their sales and marketing activities
and consulting services, and with advantageous cross-selling opportunities; and
(vi) the Merger will afford HNC the opportunity (subject to permission from
appropriate parties) to obtain additional consumer financial data, primarily
from the small to mid-size financial services companies that use OSI's products.
See "Approval of the Merger--HNC's Reasons for the Merger."

           OSI's Reasons for the Merger. The OSI Board identified a number of
potential benefits from the proposed Merger, including: (i) enhanced ability of
OSI to market and sell business-critical, core processing banking systems to
potential customers; (ii) potential to add functionality to the OSI System based
on HNC's predictive software solutions that would uniquely leverage the OSI
System's real time processing capability and significantly differentiate the OSI
System from other competitive core processing products; (iii) ability to
leverage HNC's distribution channels to augment OSI's current marketing and
sales activities both in the United States and abroad; (iv) opportunities to
leverage research and development capabilities by sharing technology and
coordinating product development efforts; (v) the ability to cross--sell various
of HNC's banking products to OSI's installed customer base; (vi) the
complementary, and not functionally redundant, nature of OSI's technologies and
products to those of HNC; and (vii) increased liquidity for OSI's stockholders
with respect to their investment in OSI. See "Approval of the Merger--OSI's
Reasons for the Merger."
    

                                       5
<PAGE>   15


CERTAIN FEDERAL INCOME TAX CONSEQUENCES

   
           The Merger is intended to be a tax-free reorganization for federal
income tax purposes, so that no gain or loss would generally be recognized by
HNC or OSI and no gain or loss would generally be recognized by an OSI
stockholder, except with respect to cash received in lieu of fractional shares
or an OSI stockholder who exercises his, her or its appraisal rights. OSI
stockholders are urged to consult their own tax advisors as to the specific tax
consequences of the Merger to the individual stockholder. For a further
discussion of the federal income tax consequences of the Merger, see "Approval
of the Merger--Material Federal Income Tax Consequences of the Merger."
    

ACCOUNTING TREATMENT

   
           The Merger is intended to be treated as a pooling of interests for
financial reporting purposes in accordance with generally accepted accounting
principles. It is a condition to HNC's obligations to consummate the Merger
that, among other things, HNC will have been advised in writing, as of the
effective time of the Merger, by PricewaterhouseCoopers LLP that, subject to
customary qualifications, they concur with management's conclusion that no
conditions exist that would preclude HNC from accounting for the Merger as a
"pooling of interests," and OSI will have been advised in writing, as of the
effective time of the Merger, by PricewaterhouseCoopers LLP that, subject to
customary qualifications, they concur with management's conclusion that no
conditions exist that would preclude OSI from being a party to a business
combination for which the pooling of interests method of accounting would be
available. See "Approval of the Merger--Accounting Treatment."
    

GOVERNMENT AND REGULATORY APPROVALS

   
           Under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended (the "HSR Act"), the Merger may not be consummated until certain
information has been furnished to the Department of Justice and the Federal
Trade Commission (the "FTC") and the specified waiting period requirements of
the HSR Act have been satisfied. HNC and OSI each filed their respective
notification and report forms under the HSR Act on October 2, 1998. On
October 15, 1998, the waiting period requirements of the HSR Act were satisfied.
See "Approval of the Merger--Government and Regulatory Approvals."
    

APPRAISAL RIGHTS

   
           When the Merger is effected, stockholders of OSI who comply with the
procedures prescribed in Section 262 of the Delaware General Corporation Law
(the "DGCL") will be entitled to a judicial determination of the "fair value" of
their shares (exclusive of any element of value arising from the accomplishment
or expectation of the Merger) and to receive from OSI payment of such fair value
in cash. Shares of OSI Common Stock and OSI Preferred Stock which are
outstanding immediately prior to the effective time of the Merger and with
respect to which appraisal shall have been properly demanded in accordance with
Section 262 of the DGCL shall not be converted into the right to receive shares
of HNC Common Stock in the Merger at or after the effective time of the Merger
unless and until the holder of such shares withdraws his, her or its demand for
such appraisal or becomes ineligible for such appraisal.
    

   
           Holders of HNC Common Stock and holders of OSI Options outstanding at
the effective time of the Merger are not entitled to appraisal rights in
connection with the Merger. See "Approval of the Merger--Appraisal Rights."
    

INTERESTS OF CERTAIN PERSONS IN THE MERGER

   
           In considering the recommendation of the OSI Board with respect to
the Merger, stockholders of OSI should be aware that certain members of the
management of OSI and the OSI Board have certain interests in the Merger in
addition to the interests of the OSI stockholders generally. In connection with
the OSI Board's determination that the Merger is fair to the stockholders of
OSI, the OSI Board was aware of these potential conflicts and carefully
considered conflict of interest issues relating to the matters described below.
    

   
           Mr. Anderson and HNC entered into a letter agreement regarding the
terms of his continued employment with OSI which provides that, effective as of
the closing, (i) Mr. Anderson shall continue to work for OSI as its Chief
Executive Officer for at least three years after the effective time of the
Merger, (ii) HNC shall pay Mr. Anderson his current 1998 cash compensation
(including a cash bonus) for the remainder of the calendar year, and thereafter
shall pay Mr. Anderson
    

                                       6
<PAGE>   16

   
compensation consistent with that paid by HNC to its comparably situated
executives, but in no event will his salary be reduced below the 1998 level
during the three-year period described above and (iii) Mr. Anderson agreed that
the salary continuation benefits provided for in his current employment
agreement with OSI would be available in the event of any triggering event (as
defined in that agreement) that occurs through, but not beyond, the third
anniversary of the effective time of the Merger.
    

   
           Mr. Person and HNC entered into a letter agreement regarding the
terms of his continued employment with OSI which provides that, effective as of
the Closing, (i) Mr. Person shall continue to work for OSI as its President and
Chief Operating Officer for at least three years after the effective time of the
Merger, (ii) HNC shall pay Mr. Person his current 1998 cash compensation
(including a cash bonus) for the remainder of the calendar year, and thereafter
shall pay Mr. Person compensation consistent with that paid by HNC to its
comparably situated executives, but in no event will his salary be reduced below
the 1998 level during the three-year period described above and (iii) Mr. Person
agreed that the salary continuation benefits provided for in his current
employment agreement with OSI would be available in the event of any triggering
event (as defined in that agreement) that occurs through, but not beyond, the
third anniversary of the effective time of the Merger.
    

   
           In accordance with the terms of Mr. Willemin's existing agreement
with OSI, each outstanding OSI Option held by Mr. Willemin (currently a total of
100,000 OSI Options) will become fully vested and exercisable immediately prior
to consummation of the Merger.
    

   
           Prior to the effective time of the Merger, OSI expects, in accordance
with past practice, to authorize the grant of options to purchase approximately
200,000 shares of OSI Common Stock to certain officers and other employees
pursuant to OSI's 1994 Stock Option Plan. OSI does not expect to grant any of
such options to any of the executive officers of OSI.
    

   
           OSI expects to enter into a consulting agreement with Richard P.
Yanak, a director of OSI, with a term commencing as of the effective time of the
Merger and extending through 2000. OSI expects to retain Mr. Yanak on a
consulting basis to assist OSI in electronic commerce product development, sales
and marketing activities and such other services relating to the business of OSI
as Mr. Yanak and OSI shall mutually agree upon, on terms to be determined.
    

   
           The Merger Agreement provides that, for a period of six years after
the effective time of the Merger, HNC shall, and shall cause the Surviving
Corporation to, indemnify and hold harmless the present and former officers and
directors of OSI and any officers, directors and employees of OSI who are (or
were) fiduciaries of OSI employee benefit plans in respect of certain acts or
omissions of such persons taken or occurring prior to the effective time of the
Merger and in their capacity as an officer, director or fiduciary, and to
provide officers' and directors' liability insurance covering OSI's officers and
directors for a period of five years after effectiveness of the Merger, subject
to a maximum annual insurance premium. See "Approval of the Merger--Interests of
Certain Persons in the Merger."
    


TERMS OF THE MERGER

   
           Effective Time. The Merger will become effective upon the filing of a
Certificate of Merger with the Delaware Secretary of State (the "Effective
Time"). The closing of the Merger (the "Closing") will occur as soon as
practicable, and in all events by the second business day after the satisfaction
or waiver of the conditions to the Merger, or on such other day as HNC and OSI
may mutually agree (the "Closing Date"). Assuming all conditions to the Merger
are met or waived prior thereto, it is anticipated that the Closing Date and the
Effective Time will occur on or about __________, 1998. See "Terms of the
Merger--Effective Time."
    

   
           Manner and Basis of Converting OSI Shares. Upon the effectiveness of
the Merger, each share of OSI Common Stock and each share of OSI Preferred Stock
that is issued and outstanding immediately prior to the Effective Time (other
than dissenting shares) will be converted into the right to receive HNC Common
Stock, and each OSI Option that is outstanding immediately prior to the
Effective Time will be assumed by HNC and converted into an HNC Option. The
Merger Agreement uses a conversion formula to compute the number of shares of
HNC Common Stock into which each share of OSI Common Stock and OSI Preferred
Stock will be converted in the Merger and the number of HNC Options into which
each OSI Option will be converted in the Merger. The results of this conversion
formula depend on the number of shares of OSI Common Stock and of each series of
OSI Preferred Stock, and on the number of OSI Options, that are outstanding
immediately prior to the Effective Time of the Merger. For a full description of
the steps used in this conversion formula, see "Terms of the Merger--Manner and
Basis of Converting OSI Shares."
    

           The Merger Agreement provides that the number of shares of HNC Common
Stock that will be (i) issued in the Merger upon the conversion of outstanding
shares of OSI Common Stock and OSI Preferred Stock and (ii) subject to all HNC
Options that are issued in the Merger upon the conversion of outstanding OSI
Options, will not exceed an aggregate total of 2,956,618 shares of HNC Common
Stock (the "HNC Merger Shares").



                                       7
<PAGE>   17

   
           Illustration of the Merger Conversion Formula. The following
illustration of the Merger conversion formula assumes that, immediately prior to
the Effective Time there are outstanding 2,236,013 shares of OSI Common Stock,
1,000,000 shares of OSI Series A-1 Preferred Stock, 583,333 shares of OSI Series
A-2 Preferred Stock, 1,736,250 shares of OSI Series B Preferred Stock, 1,375,000
shares of OSI Series C Preferred Stock, 1,250,000 shares of OSI Series D
Preferred Stock and OSI Options to purchase a total of 1,887,500 shares of OSI
Common Stock (and no other OSI securities). The above assumptions are based on
the number of shares of OSI Common Stock and OSI Preferred Stock and OSI Options
that were outstanding on September 16, 1998, and assumes that after September
16, 1998 and before consummation of the Merger (i) all outstanding warrants to
purchase shares of OSI capital stock are exercised in full and (ii) an
additional 200,000 OSI Options are granted. Based on those assumptions: (a) each
such share of OSI Common Stock, OSI Series A-1 Preferred Stock, OSI Series A-2
Preferred Stock, OSI Series B Preferred Stock, OSI Series C Preferred Stock and
OSI Series D Preferred Stock would be converted in the Merger into 0.23794,
0.27594, 0.31394, 0.31394, 0.35194 and 0.38993 shares of HNC Common Stock,
respectively (subject to the elimination of fractional shares), and each OSI
Option to purchase one share of OSI Common Stock would be converted in the
Merger into an option to purchase 0.23794 shares of HNC Common Stock (subject to
elimination of fractional shares) at an exercise price per share of HNC Common
Stock equal to the pre-Merger exercise price per share of OSI Common Stock
divided by 0.23794. This would result in the issuance by HNC of a total of
2,507,507 shares of HNC Common Stock (subject to the elimination of fractional
shares), or, based on the number of shares of HNC Common Stock outstanding on
August 31, 1998, approximately 8.8% of the shares of HNC Common Stock
outstanding after the Merger. Any changes to such assumptions will alter the
conversion rates at which shares of OSI Common Stock, OSI Preferred Stock and
OSI Options will be converted in the Merger. See "Terms of the Merger--Manner
and Basis of Converting OSI Shares."
    

   
           Procedure for Converting OSI Shares. Upon the Closing Date, each
holder of shares of OSI Common Stock and/or OSI Preferred Stock will surrender
the certificate(s) for such shares, duly endorsed to HNC for cancellation as of
the Effective Time, together (if requested by HNC) with each OSI stockholder's
brief agreement to and acknowledgment of the escrow and indemnification
requirements of the Merger Agreement. Promptly after the Effective Time and
receipt of such certificates and (if requested) such agreement and
acknowledgment, HNC or its transfer agent will issue to each tendering holder of
such an OSI stock certificate a certificate for the number of shares of HNC
Common Stock to which such holder is entitled pursuant to the Merger (less the
shares of HNC Common Stock to be placed in escrow under the Merger Agreement and
Escrow Agreement, as described below), plus a check for the amount of cash in
lieu of any fractional shares. On or about the Closing Date, HNC will deliver
the certificates representing the Escrow Shares to the Escrow Agent pursuant to
the Escrow Agreement. See "Terms of the Merger--Manner and Basis of Converting
OSI Shares."
    

   
           Assumption and Conversion of OSI Stock Options. Upon the Effective
Time, each OSI Option that is outstanding immediately prior to the Effective
Time will be assumed by HNC and converted into an HNC Option determined by
multiplying the number of shares of OSI Common Stock that are subject to such
OSI Option immediately prior to the Effective Time by the Participation Number,
at an exercise price per share of HNC Common Stock equal to the exercise price
per share of OSI Common Stock that was in effect for such OSI Option immediately
prior to the Effective Time divided by the Participation Number. The terms,
exercisability, vesting schedule, status as an "incentive stock option" under
Section 422 of the Internal Revenue Code of 1986, as amended (the "Code"), (if
applicable) or as a nonqualified stock option, and all other terms and
conditions of each OSI Option (including without limitation the provisions of
the OSI Option Plan that form part of the terms and conditions of such OSI
Option) that is converted into an HNC Option in the Merger will (except as
otherwise provided in the terms of such OSI Options), to the extent permitted by
law and otherwise reasonably practicable, be unchanged and continue in effect
after the Effective Time. Pre-Merger employment or other service with OSI will
be credited to each holder of an OSI Option for purposes of applying any vesting
schedule based on the duration of such holder's employment or other service that
is contained in the OSI Option issued to such holder that is converted into an
HNC Option in the Merger in order to determine the number of shares of HNC
Common Stock that are exercisable under such HNC Option at any point in time.
See "Terms of the Merger--Assumption and Conversion of OSI Stock Options."
    

   
           Stock Ownership Immediately Following the Merger. Based upon the
capitalization of OSI as of the close of business on September 16, 1998
(including the number of shares of OSI Common Stock and OSI Preferred Stock
outstanding and the number of shares issuable upon exercise of outstanding OSI
Options), and assuming that after September 16, 1998 and before consummation of
the Merger (i) all warrants to purchase OSI capital stock that were outstanding
on September 16, 1998 are exercised in full and (ii) options to purchase 200,000
shares of OSI Common Stock are granted by OSI, then upon consummation of the
Merger (assuming no OSI stockholders exercise appraisal rights), an aggregate of
approximately 2,507,507 shares of HNC Common Stock will be issued in the Merger
and HNC will assume OSI Options to purchase up to approximately 449,111
additional shares of HNC Common Stock (in each case subject to the elimination
of fractional shares). Since OSI's capitalization is subject to charge prior to
the Effective Time, these numbers may vary from the figures that actually result
from the Merger. See "Terms of the Merger--Stock Ownership Immediately Following
the Merger."
    



                                       8
<PAGE>   18


           Effects of the Merger. When the Merger is completed, Merger Sub will
cease to exist, and all of the business, assets, liabilities and obligations of
Merger Sub will be transferred to and assumed by OSI by operation of law, with
OSI continuing in existence as the surviving corporation of the Merger (the
"Surviving Corporation"). Pursuant to the Merger Agreement, the Certificate of
Incorporation of OSI, as amended and restated in the Merger Agreement, will
become the Certificate of Incorporation of the Surviving Corporation and the
Bylaws of OSI, as amended in the Merger Agreement, will become the Bylaws of the
Surviving Corporation. The officers of the Surviving Corporation immediately
after the Effective Time will be the individuals who are the officers of Merger
Sub immediately prior to the Effective Time. The members of the Board of
Directors of the Surviving Corporation immediately after the Effective Time will
be Douglas K. Anderson and three persons nominated by HNC, who are currently
anticipated to be Robert L. North, Raymond V. Thomas and Michael A. Thiemann.
There will be no change in the Board of Directors or officers of HNC as a result
of the Merger. See "Terms of the Merger--Effects of the Merger."

   
           Conduct of Business Pending the Merger. Until the earlier of the
consummation of the Merger or the termination of the Merger Agreement in
accordance with its terms, OSI has agreed to advise HNC promptly in writing (i)
of any event that would render any representation or warranty of OSI contained
in the Merger Agreement, if made on or as of the date of such event or the
Closing Date, untrue or inaccurate in any material respect and (ii) of any
material adverse change in OSI's business, results of operations, or financial
condition. OSI has also agreed that it will carry on and preserve its business
and its relationships with customers, suppliers, employees and others in
substantially the same manner as it has prior to the date of the Merger
Agreement and will promptly bring to the attention of HNC in writing any
material deterioration in its relationship with any key customer, key supplier
or key employee. In addition, without the prior written consent of HNC, OSI is
not permitted to perform or engage in certain activities. Until the earlier of
the Effective Time or the termination of the Merger Agreement, HNC has agreed to
advise OSI promptly in writing of any event that would render any representation
or warranty of HNC contained in the Merger Agreement, if made on or as of the
date of such event or the Closing Date, untrue or inaccurate in any material
respect. See "Terms of the Merger--Conduct of Business Pending the Merger."
    

           Non-Solicitation. Pursuant to the Merger Agreement, OSI has agreed
that it will not, and will not authorize, encourage or permit any officer,
director, employee, stockholder, affiliate or agent of OSI or any other person
on OSI's or their behalf to, directly or indirectly engage in certain activities
relating to, or that could result in, an Alternative Transaction. The Merger
Agreement defines the term "Alternative Transaction" as (i) any commitment,
agreement or transaction involving or providing for the possible disposition of
all or any substantial portion of OSI's business, assets or capital stock,
whether by way of merger, consolidation, sale of assets, sale of stock, tender
offer and/or any other form of business combination or (ii) any initial public
offering of capital stock or other securities of OSI pursuant to a registration
statement filed under the Securities Act. See "Terms of the
Merger--Non-Solicitation."

   
           Conditions to the Merger. In addition to the requirements that the
requisite approval of the OSI stockholders be received and that all HSR Act
requirements be satisfied, consummation of the Merger is subject to a number of
other conditions that, if not satisfied or waived, may cause the Merger not to
be completed and the Merger Agreement to be terminated. Consummation of the
Merger is conditioned on, among other things, the accuracy of each party's
representations and warranties in the Merger Agreement, performance by each
party of its covenants in the Merger Agreement, the absence of legal action
threatening, delaying, limiting or preventing consummation of the Merger,
receipt of all governmental and regulatory consents and approvals and the
absence of any material adverse change in the business of the parties. In
addition, the obligations of HNC under the Merger Agreement to effect the Merger
are subject to the fulfillment or satisfaction of the conditions that HNC shall
have been advised in writing, as of the Effective Time, by
PricewaterhouseCoopers LLP that, subject to customary qualifications, they
concur with management's conclusion that no conditions exist that would preclude
HNC from accounting for the Merger as a pooling of interests, and OSI will have
been advised in writing, as of the Effective Time, by PricewaterhouseCoopers LLP
that, subject to customary qualifications, they concur with management's
conclusion that no conditions exist that would preclude OSI from being a party
to a business combination for which the pooling of interests method of
accounting would be available. The obligations of HNC under the Merger Agreement
to effect the Merger are also subject to the fulfillment or satisfaction of
certain other conditions, including the conditions that HNC shall have received
all third party consents, the number of outstanding shares of OSI Common Stock
and OSI Preferred Stock (if any) that are eligible to exercise appraisal rights
under the DGCL will not exceed 5% of the shares of OSI Common Stock outstanding
on an as-converted basis, HNC shall have received signed affiliate agreements,
non-competition agreements and the escrow
    



                                       9
<PAGE>   19


   
agreement, HNC shall have received resignations from certain OSI directors,
certain OSI employees shall have agreed to remain with OSI after the Effective
Time, and certain parties with business relationships with OSI shall have waived
certain rights under the agreements governing those relationships. See "Terms of
the Merger--Conditions to the Merger."

           Termination, Amendment and Waiver. The Merger Agreement may be
terminated at any time prior to the Effective Time by the mutual written consent
of HNC and OSI. Either HNC or OSI, by giving written notice to the other, may
terminate the Merger Agreement (i) if a court of competent jurisdiction or other
governmental authority shall have issued a nonappealable final order, decree or
ruling or taken any other action, in each case having the effect of permanently
restraining, enjoining or otherwise prohibiting the Merger; or (ii) if the
Merger shall not have been consummated by March 31, 1999. Either HNC or OSI may
terminate the Merger Agreement at any time prior to the Closing if the other has
committed (or, in the case of a termination by OSI, Merger Sub has committed) a
material breach of (i) any of its representations and warranties under the
Merger Agreement; or (ii) any of its covenants under the Merger Agreement and
has not cured such material breach within 30 days after the party seeking to
terminate the Merger Agreement has given the other party written notice of the
material breach and its intention to terminate the Merger Agreement. Termination
of the Merger Agreement by a party (the "Terminating Party") in accordance with
the Merger Agreement shall not give rise to any obligation or liability on the
part of the Terminating Party on account of such termination, except to the
extent otherwise expressly provided in the Merger Agreement.
    
           Any term or provision of the Merger Agreement may be amended, and the
observance of any term of the Merger Agreement may be waived only by a writing
signed by the party to be bound thereby. The waiver by a party of any breach of
the Merger Agreement or default in the performance of the Merger Agreement will
not be deemed to constitute a waiver of any other default or any succeeding
breach or default. The Merger Agreement may be amended by the parties at any
time before or after approval of the Merger Agreement by the stockholders of
OSI, but, after such approval, no amendment will be made which by applicable law
requires the further approval of the stockholders of OSI without obtaining such
further approval. See "Terms of the Merger--Termination, Amendment and Waiver."

LIQUIDATED DAMAGES

           Under the Merger Agreement, if HNC refuses to consummate the Merger
notwithstanding satisfaction or waiver of all conditions precedent in the Merger
Agreement, or if HNC does not consummate the Merger solely due to OSI's failure
to satisfy certain conditions relating to waiver of certain rights of its
investors, HNC will, if requested to do so by OSI within 30 days after such a
termination of the Merger Agreement (i) purchase 625,000 shares of OSI Common
Stock at a price of $8.00 per share for cash on certain terms and (ii) lend OSI
$5.0 million, or such lesser sum as OSI may specify, on certain terms. Such
equity investment and/or loan would constitute OSI's sole and exclusive remedy
for any failure of HNC to consummate the Merger for the reasons described above.

INDEMNIFICATION AND ESCROW

   
           In connection with the Merger, HNC, Douglas K. Anderson, as
representative of the OSI stockholders ("Representative") and State Street Bank
and Trust Company of California, N.A. or a similar institution, as escrow agent
(the "Escrow Agent") will enter into an Escrow Agreement (the "Escrow
Agreement"). Pursuant to the Escrow Agreement, upon the Closing of the Merger,
HNC will withhold 5% of the shares of HNC Common Stock to be issued to OSI
stockholders in the Merger (the "Escrow Shares") and will deliver certificates
representing such Escrow Shares to Escrow Agent, together with related stock
transfer powers, to be held by the Escrow Agent as security for the OSI
stockholders' indemnification obligations under the Merger Agreement and the
Escrow Agreement. Pursuant to these indemnification obligations, the OSI
stockholders will indemnify and hold harmless HNC and the Surviving Corporation
and their respective officers, directors, agents, stockholders and employees,
and each person, if any, who controls or may control HNC or the Surviving
Corporation ("Indemnified Persons") from and against any and all claims,
demands, suits, actions, causes of actions, losses, costs, damages, liabilities
and expenses including, without limitation, reasonable attorneys' fees, other
professionals' and experts' reasonable fees and court or arbitration costs
("Damages") directly or indirectly incurred, resulting or and arising out of:
(i) any inaccuracy, misrepresentation, breach of, or default in, any of the
representations, warranties or covenants given or made by OSI in the Merger
Agreement or in the related documents and certificates delivered pursuant to the
Merger Agreement; (ii) any failure of any information pertaining to OSI and
contained in the Registration Statement or this Prospectus/Proxy Statement to be
true, correct and complete; or (iii) any OSI expenses incurred with respect to
the Merger Agreement, the Merger and the transactions contemplated thereby in
excess of $2.2 million ("Excess Transaction Expenses"). Satisfaction of the
indemnification obligations of the holders of OSI Common Stock and OSI Preferred
Stock will be effected solely by the
    


                                       10
<PAGE>   20


forfeiture of the Escrow Shares and any other assets deposited in escrow
pursuant to the Escrow Agreement. However, these limitations do not restrict
HNC's rights against (i) any person with respect to any fraudulent conduct or
any fraudulent misrepresentations or omission by such person or (ii) any OSI
stockholder, with respect to any failure of such OSI stockholder to have good,
valid and marketable title to any issued and outstanding shares of OSI Common
Stock or OSI Preferred Stock held (or asserted to have been held) by such OSI
stockholder, free and clear of all liens, claims and encumbrances, or to have
the full right, capacity and authority to vote such person's shares of stock of
OSI stock in favor of the Merger and any other transaction contemplated by the
Merger Agreement. The Escrow Shares will be held by the Escrow Agent until the
first anniversary of the Effective Time. OSI stockholders may be required to
submit IRS Form W-9 or W-8 backup withholding statement to the Escrow Agent in
order to have their shares of HNC Common Stock released from escrow upon its
expiration. See "Terms of the Merger--Indemnification and Escrow."

RELATED AGREEMENTS
   
           OSI Affiliate Agreement. To help ensure that the Merger will be
treated as a pooling of interests for accounting and financial reporting
purposes, each person determined by OSI to be an affiliate of OSI shall enter
into an Affiliate Agreement (the "Affiliate Agreement"), pursuant to which such
stockholder shall agree not to dispose of, or take any action that would reduce
its risk of ownership or investment in, any securities of HNC (i) during the
30-day period immediately preceding the Effective Time or (ii) until HNC has
publicly released a report including the combined financial results of HNC and
OSI for a period of at least 30-days of combined operations after the Merger.
See "Terms of the Merger--Related Agreements--OSI Affiliate Agreement."
    
   
           Voting Agreement. Pursuant to certain Voting Agreements dated
September 16, 1998 (the "Voting Agreements"), OSI stockholders that beneficially
own an aggregate of 875,000 shares of OSI Common Stock and 4,747,361 shares of
OSI Preferred Stock have agreed to vote all their shares of OSI Common Stock or
OSI Preferred Stock in favor of the Merger and against (i) any action or
agreement that would result in a breach of any representation, warranty,
covenant or obligation of OSI under the Merger Agreement or preclude fulfillment
of a condition precedent under the Merger Agreement, (ii) any Alternative
Transaction or any other action which is intended, or could be reasonably
expected to, impede, interfere with, delay, postpone, discourage or adversely
affect the Merger or any transactions contemplated thereby. Holders of a total
of approximately 39.1% and 89.4% of the outstanding shares of OSI Common Stock
and OSI Preferred Stock, respectively, have signed Voting Agreements. See "Terms
of the Merger--Related Agreements--Voting Agreement."
    
   
           Non-Competition Agreement. Douglas K. Anderson, Graham H. Gurney,
John L. Person, Clifford I. Waggoner and Richard J. Willemin will enter into
Non-Competition Agreements providing that, for a certain period following the
Effective Time, they will not directly or indirectly engage in any
business that is competitive with or substantially similar to the business
engaged in by OSI, or presently proposed to be conducted by OSI. See "Terms of
the Merger--Related Agreements--Non-Competition Agreement."
    



                                       11
<PAGE>   21

                           MARKET PRICES AND DIVIDENDS

MARKET PRICES

           HNC Common Stock has been traded on the Nasdaq National Market since
June 1995 under the symbol "HNCS." The following table sets forth for the
periods indicated the high and low sales prices of the HNC Common Stock. Before
June 1995, there was no established public trading market for the HNC Common
Stock. All prices have been adjusted to give effect to a two-for-one stock split
effected in the form of a stock dividend in April 1996.

   
<TABLE>
<CAPTION>
1996                                                 High              Low
                                                    -------          -------
<S>                                                 <C>              <C>
First Quarter                                       $38 3/4          $18 1/4
Second Quarter                                      $51              $31 1/4
Third Quarter                                       $47 1/2          $20 3/4
Fourth Quarter                                      $45 1/4          $26 1/4

</TABLE>


<TABLE>
<CAPTION>
1997                                                 High              Low
                                                    -------          -------
<S>                                                 <C>              <C>
First Quarter                                       $36 3/4          $23 1/4
Second Quarter                                      $42 3/8          $18 1/4
Third Quarter                                       $43 5/8          $33 3/4
Fourth Quarter                                      $43 1/2          $30
</TABLE>

<TABLE>
<CAPTION>
1998                                                 High              Low
                                                    -------          -------
<S>                                                 <C>              <C>
First Quarter                                       $43              $30 3/4
Second Quarter                                      $42 3/4          $31 1/2
Third Quarter                                       $47 1/8          $33 7/8
Fourth Quarter (through October 28, 1998)           $40 1/2          $22 1/2
</TABLE>
    

           There is no established public trading market for the OSI Common
Stock or the OSI Preferred Stock.

   
           The following table sets forth the closing sales price per share of
HNC Common Stock on the Nasdaq National Market on September 15, 1998, the last
trading day before announcement of the proposed Merger, and on ___________,
1998, the latest practicable trading day before the mailing of this Proxy
Statement/Prospectus for which information was obtainable, and the assumed
equivalent per share prices for OSI Common Stock and OSI Preferred Stock. The
"equivalent per share price" for OSI Common Stock, OSI Series A-1 Preferred
Stock, OSI Series A-2 Preferred Stock, OSI Series B Preferred Stock, OSI Series
C Preferred Stock and OSI Series D Preferred Stock as of such dates equals the
closing sale price per share of HNC Common Stock on such dates multiplied by
0.23794, 0.27594, 0.31394, 0.31394, 0.35194 and 0.38993, respectively. The
foregoing numbers represent the conversion rates of each such class or series of
OSI stock, based on OSI's capitalization as of September 16, 1998, and assuming
that after September 16, 1998 and prior to consummation of the Merger, (i) all
outstanding warrants to purchase shares of OSI stock are exercised in full, and
(ii) OSI grants OSI Options to purchase an additional 200,000 shares of OSI
Common Stock. See "Terms of the Merger--Manner and Basis of Converting OSI
Shares."
    

<TABLE>
<CAPTION>
                                 September 15, 1998                    , 1998
                                 ------------------        ------------------
<S>                              <C>                       <C>        
HNC Common Stock ...........          $40.125
OSI Common Equivalent ......          $ 9.547
OSI Series A-1 Equivalent...          $11.072
OSI Series A-2 Equivalent...          $12.597
OSI Series B Equivalent ....          $12.597
OSI Series C Equivalent ....          $14.122
OSI Series D Equivalent ....          $15.646

</TABLE>


                                       12
<PAGE>   22

   
           OSI stockholders are advised to obtain current market quotations for
the HNC Common Stock. No assurance can be given as to the market prices of HNC
Common Stock at any time before the Effective Time or as to the market price of
HNC Common Stock at any time thereafter. Because the number of shares of
HNC Common Stock to be issued in the Merger plus the number of shares of HNC
Common Stock subject to HNC Options to be issued in the Merger is fixed, OSI
stockholders will not be compensated for decreases in the market price of HNC
Common Stock that could occur before the Merger becomes effective. In the event
the market price of HNC Common Stock increases or decreases prior to the
Effective Time, the value at the Effective Time of the HNC Common Stock to be
received in the Merger in exchange for the OSI Common Stock and OSI Preferred
Stock would correspondingly increase or decrease. See "Terms of the
Merger--Manner and Basis of Converting OSI Shares."
    

   
           On August 31, 1998, there were 25,784,351 shares of HNC Common Stock
issued and outstanding held by 178 stockholders of record. On September 16,
1998, there were 2,236,013 shares of OSI Common Stock and 5,944,583 shares of
OSI Preferred Stock issued and outstanding, held by a total of 40 stockholders
of record.
    

DIVIDENDS

           HNC has never declared or paid any cash dividends on its capital
stock. HNC currently anticipates that it will retain all future earnings for use
in its business and does not anticipate paying any cash dividends in the
foreseeable future. HNC's bank credit agreement prohibits HNC from declaring or
paying any cash dividends without the bank's consent.


           OSI has never declared or paid any cash dividends on its capital
stock.





                                       13
<PAGE>   23


                           COMPARATIVE PER SHARE DATA

    COMPARISON OF EARNINGS (LOSS) AND BOOK VALUES PER SHARE OF COMMON STOCK*

   
           The following table sets forth certain historical per share data of
HNC and OSI and selected unaudited pro forma financial information after giving
effect to the Merger as a pooling of interests for accounting purposes, and
assuming that (i) each outstanding share of OSI Common Stock will be converted
in the Merger into the right to receive 0.23794 shares of HNC Common Stock; (ii)
each outstanding share of OSI Series A-1 Preferred Stock, OSI Series A-2
Preferred Stock, OSI Series B Preferred Stock, OSI Series C Preferred Stock, and
OSI Series D Preferred Stock will be converted in the Merger into the right to
receive 0.27594, 0.31394, 0.31394, 0.35194 and 0.38993 shares of HNC Common
Stock, respectively; and (iii) each outstanding option to purchase one share of
OSI Common Stock will be assumed by HNC in the Merger and converted into an
option to purchase 0.23794 shares of HNC Common Stock. The following data should
be read in conjunction with the Unaudited Pro Forma Consolidated Combined
Financial Information and the separate historical financial statements of HNC
and OSI included elsewhere in this Proxy Statement/Prospectus. The pro forma and
pro forma equivalent earnings per share information does not reflect transaction
costs of approximately $4.5 million expected to be incurred to complete the
Merger. The amount of this charge is expected to be $0.18 per share. The
unaudited pro forma combined per share data are not necessarily indicative of
the operating results that would have been achieved had the Merger been
consummated as of the beginning of the earliest period presented and should not
be construed as representative of the future operations or financial position of
HNC.
    

   
<TABLE>
<CAPTION>
                                                  PER HNC             PER OSI                  PRO FORMA EARNINGS 
                                                   SHARE               SHARE                 GIVING EFFECT TO MERGER
                                              ---------------     ---------------        -------------------------------
                                                                                          PER HNC              PER HNC
                                              EARNINGS (LOSS)      EARNINGS (LOSS)         SHARE                SHARE*
                                              ---------------     ---------------        ----------           ----------
<S>                                           <C>                 <C>                    <C>                  <C>     
September 30, 1998 (nine months)
   Series A-1 Preferred Stock..............                                                                   $ (0.09)
   Series A-2 Preferred Stock..............                                                                   $ (0.10)
   Series B Preferred Stock................                                                                   $ (0.10)
   Series C Preferred Stock................                                                                   $ (0.11)
   Series D Preferred Stock................                                                                   $ (0.12)
   Common Stock............................     $    (0.18)        $  (1.80)              $ (0.31)            $ (0.07)

December 31, 1997             
   Series A-1 Preferred Stock..............                                                                   $  0.14 
   Series A-2 Preferred Stock..............                                                                   $  0.16 
   Series B Preferred Stock................                                                                   $  0.16 
   Series C Preferred Stock................                                                                   $  0.18 
   Series D Preferred Stock................                                                                   $  0.20 
   Common Stock............................     $     0.68         $  (1.42)              $  0.52             $  0.12 

December 31, 1996             
   Series A-1 Preferred Stock..............                                                                   $  0.09 
   Series A-2 Preferred Stock..............                                                                   $  0.10 
   Series B Preferred Stock................                                                                   $  0.10 
   Series C Preferred Stock................                                                                   $  0.11 
   Series D Preferred Stock................                                                                   $  0.12 
   Common Stock............................     $     0.47         $  (1.73)              $  0.31             $  0.07 

December 31, 1995             
   Series A-1 Preferred Stock..............                                                                   $  0.05 
   Series A-2 Preferred Stock..............                                                                   $  0.06 
   Series B Preferred Stock................                                                                   $  0.06 
   Series C Preferred Stock................                                                                   $  0.06 
   Series D Preferred Stock................                                                                   $  0.07 
   Common Stock............................     $     0.28         $  (0.98)              $  0.18             $  0.04 

</TABLE>
    


   
<TABLE>
<CAPTION>
                                                  PER HNC             PER OSI               PRO FORMA BOOK VALUES
                                                   SHARE               SHARE               GIVING EFFECT TO MERGER 
                                               ------------        ------------        -------------------------------
                                                                                        PER HNC              PER HNC
                                                                                         SHARE                SHARE*
                                                                                       ----------           ----------
<S>                                            <C>                 <C>                    <C>                  <C>   
Book Values at

September 30, 1998 
   Series A-1 Preferred Stock..............                                                                   $  1.33 
   Series A-2 Preferred Stock..............                                                                   $  1.51 
   Series B Preferred Stock................                                                                   $  1.51 
   Series C Preferred Stock................                                                                   $  1.70 
   Series D Preferred Stock................                                                                   $  1.88 
   Common Stock............................     $     5.23         $  (4.55)             $  4.82              $  1.15 

December 31, 1997
   Series A-1 Preferred Stock..............                                                                   $  0.98 
   Series A-2 Preferred Stock..............                                                                   $  1.11 
   Series B Preferred Stock................                                                                   $  1.11 
   Series C Preferred Stock................                                                                   $  1.25 
   Series D Preferred Stock................                                                                   $  1.38 
   Common Stock............................     $     4.23         $  (3.61)             $  3.55              $  0.84 

</TABLE>
    



   
*          Assumes that (i) each outstanding share of OSI Common Stock, OSI
           Series A-1 Preferred Stock, OSI Series A-2 Preferred Stock, OSI
           Series B Preferred Stock, OSI Series C Preferred Stock, and OSI
           Series D Preferred Stock will be converted into the right to receive
           0.23794, 0.27594, 0.31394, 0.31394, 0.35194 and 0.38993 shares of HNC
           Common Stock, respectively; and (ii) each outstanding option to
           purchase one share of OSI Common Stock will be assumed by HNC and
           converted into an option to purchase 0.23794 shares of HNC Common
           Stock.
    

   
    



                                       14
<PAGE>   24

                                  RISK FACTORS

   
           The following factors should be considered carefully in evaluating
the matters to be voted on at the Special Meeting and the acquisition of the HNC
securities offered hereby. This Proxy Statement/Prospectus contains
forward-looking statements that involve risks and uncertainties. The
forward-looking statements contained herein reflect the good faith judgment of
the management of HNC and OSI based on factors currently known and involve risks
and uncertainties. Actual results could differ materially from those discussed
in the forward-looking statements as a result of certain factors, including
those set forth below and elsewhere in this Proxy Statement/Prospectus. See
"Forward-Looking Statements."
    

RISKS RELATING TO THE MERGER

           GENERAL RISKS ASSOCIATED WITH INTEGRATION OF OPERATIONS. HNC and OSI
have entered into the Merger Agreement with the expectation that the proposed
Merger will result in long-term strategic benefits. Realization of these
anticipated benefits will depend in part on whether the operations of the
companies can be integrated in an efficient and effective manner. There can be
no assurance that this will occur. The successful integration of HNC and OSI
will require, among other things, integration of the companies' respective
product offerings, the coordination of their respective management, sales and
marketing and research and development efforts and the cooperation and
coordination of HNC's and OSI's business managers. It is possible that this
integration will not be accomplished smoothly or successfully, and that efforts
to achieve integration may require more time, expense and management attention
than anticipated. The diversion of management's attention from day-to-day
operations and any difficulties encountered in the transition process related to
integrating the two companies could have a material adverse effect on HNC's
business, financial condition and results of operations. Disruption of HNC's or
OSI's business might result from employee uncertainty or lack of focus, as well
as from customer or supplier confusion, following announcement of the Merger.
The process of combining the operations of the two organizations could cause the
interruption of, or a loss of momentum in, the activities of either or both of
their businesses, which could have a material adverse effect on their combined
operations. In addition, during the pre-Merger and integration phase,
competitors may try to recruit key employees of HNC or OSI and to gain a
competitive advantage with the prospective and existing customers of HNC or OSI.
There can be no assurance that the focus on product integration and extension
efforts will not have an adverse effect on the development, introduction or
delivery of new or enhanced HNC or OSI products. Further, the addition of OSI's
employee base to HNC's workforce will substantially increase HNC's operating
expenses that are fixed in the near term, making HNC more vulnerable to
operating losses if quarterly revenues fall below budgeted levels due to loss or
delay of such revenues.

           DEPENDENCE ON OSI MANAGEMENT. If members of OSI's current management
team were to terminate their employment with OSI, HNC's ability to manage OSI's
business and workforce would be harmed and OSI's operations could be disrupted.
Although Douglas K. Anderson, the Chief Executive Officer of OSI, and John L.
Person, the President of OSI, will be subject to employment agreements with OSI
after the Merger, there can be no assurance that these agreements will result in
the retention of Mr. Anderson and Mr. Person for any significant period of time.
A loss of Mr. Anderson or Mr. Person or any other member of OSI's management
could defer or prevent HNC from realizing the benefits that it anticipates from
the Merger and likely would have a material adverse effect on HNC's business,
financial condition and results of operations.

           FINANCIAL IMPACT OF FAILURE TO ACHIEVE SYNERGIES; NON-RECURRING
CHARGE. If the integration of the operations of the two companies is not
successful, if HNC does not achieve business synergies as quickly or in as great
an amount as may be expected by financial analysts, or if the accretive/dilutive
effect of the Merger is not in line with the expectations of financial analysts,
the market price of HNC Common Stock will be significantly and adversely
affected. Any shortfall in anticipated operating results could have an immediate
and significant adverse effect on the market price of HNC Common Stock. In
particular, HNC and OSI will incur substantial Merger-related expenses,
currently estimated to be approximately $4.5 million, which will result in a
non-recurring charge to operations primarily in the fourth quarter of 1998, the
quarter in which the Merger is expected to be completed. HNC expects that the
Merger will begin to be accretive beginning in the second half of 1999. However,
this forward-looking statement is subject to risks and uncertainties and actual
results may vary materially due to unforeseen changes, inaccurate or incomplete
assumptions regarding the current business or future prospects of either or both
of OSI or HNC, or other reasons, including without limitation those described in
this "Risk Factors" section or elsewhere in this Proxy Statement/Prospectus.
Actual costs may substantially exceed current estimates, unanticipated expenses
associated with the integration of the two companies may arise or HNC may incur
additional material charges in subsequent quarters to reflect additional costs
associated with the integration of the two companies. Any failure of the Merger
to meet expectations as to potential business synergies or to be accretive in
any quarter could have an immediate and significant adverse effect on the market
price of HNC Common Stock following the Merger.



                                       15
<PAGE>   25
   
           INCREASED INTEGRATION DIFFICULTIES ASSOCIATED WITH RECENT
ACQUISITIONS. The challenges of integrating the organizations and operations of
HNC and OSI will be compounded by ongoing efforts associated with the
integration of several recent acquisitions by HNC. Between August 1996 and
August 1998, HNC acquired five businesses and purchased one product line. In
August 1996, HNC acquired Risk Data Corporation ("Risk Data"), a company that
develops, markets and supports proprietary software decision products for use in
the insurance industry. In November 1996, HNC acquired Retek Distribution
Corporation, now named Retek Information Systems, Inc. ("Retek"), a company that
develops, markets and supports management decision software products for
retailers and their vendors. In November 1997, HNC acquired CompReview, Inc.
("CompReview"), a company that develops, markets and supports a software product
and related services designed to assist in the management and containment of the
medical costs of workers' compensation and automobile accident medical claims.
In March 1998, HNC acquired Practical Control Systems Technologies, Inc.
("PCS"), a company that develops, markets and supports fully integrated
distribution center management software products that address the distribution
needs of the retail, manufacturing and wholesale industries. In April 1998, HNC
acquired FTI, a company that develops and markets profitability measurement and
decision support software products and related support services to banks and
other similar financial institutions. In June 1998, HNC acquired the Advanced
Telecommunications Abuse Control System ("ATACS") product line of Bedford
Associates, Inc., which is a wholly owned subsidiary of British Airways plc.
ATACS is a fraud management software solution for wireline, wireless and
Internet telecommunication service providers. The integration of multiple
organizations will require a substantial amount of HNC's management resources
and attention. See "--Risks Relating to HNC--Recent and Future Acquisitions."
    

           INTEGRATION OF GEOGRAPHICALLY DISPERSED ORGANIZATIONS. The
difficulties of integrating the organizations of HNC and OSI will be compounded
by the fact that HNC is headquartered in California and OSI is headquartered in
Connecticut. It is intended that OSI will maintain its presence in Connecticut
following the Merger, which may complicate coordination and communication among
management, development, marketing and service teams and may require additional
management resources and attention.

   
           RISKS ASSOCIATED WITH RIGHT TO RECEIVE FIXED NUMBER OF SHARES. Under
the terms of the Merger Agreement the outstanding shares of OSI Common Stock and
OSI Preferred Stock and outstanding OSI Options will be converted in the Merger
into the right to receive a fixed number of shares of (and options to purchase)
HNC Common Stock. The Merger Agreement does not provide for adjustment of such
number based on fluctuations in the price of HNC Common Stock. The price of HNC
Common Stock may vary significantly between the date hereof and the date on
which the OSI stockholders vote with respect to the Merger Agreement due to,
among other factors, market perception of the synergies expected to be achieved
by the Merger, changes in the business, operations, results of operations or
prospects of HNC or OSI, market assessments of the likelihood that the Merger
will be completed, the timing of completion of the Merger and general market and
economic conditions. To the extent that the market price for HNC Common Stock
increases or decreases before the Effective Time, the market value at the
Effective Time of HNC Common Stock to be received by OSI stockholders in the
Merger would correspondingly increase or decrease. For example, during the
period from October 1, 1998 to December ___, 1998, the latest practicable date
before the mailing of this Proxy Statement/Prospectus, the sale price of HNC
Common Stock ranged from a high of $_______ per share to a low of $_______ per
share. Assuming that an aggregate of 2,507,507 shares of HNC Common Stock are
issued in the Merger to the OSI stockholders, the total value of the shares of
HNC Common Stock issued in the Merger to the OSI stockholders during that same
period would have ranged from $____________ to $___________. OSI stockholders
will not be compensated for decreases in the market price of HNC Common Stock
that could occur before the Effective Time. HNC Common Stock historically has
been subject to substantial price volatility. No assurance can be given as to
the market price of HNC Common Stock. The market prices of HNC Common Stock as
of a recent date are set forth herein under "Summary--Market Prices and
Dividends." Stockholders voting on the Merger Agreement and the Merger are urged
to obtain recent market quotations for HNC Common Stock. The current market
quotations for HNC Common Stock may be obtained on the Internet at
http://www.nasdaq.com. See "--Risks Relating to HNC--Volatility of HNC Common
Stock Price."
    

   
           REDUCTION OF OWNERSHIP INTEREST OF CURRENT STOCKHOLDERS. Following
the Merger, and based on the number of shares of OSI Common Stock, OSI Preferred
Stock and OSI Options outstanding as of September 16, 1998, and assuming that,
after September 16, 1998 and prior to consummation of the Merger, all warrants
to purchase OSI stock that were outstanding on September 16, 1998 are exercised
in full, that OSI grants OSI Options to purchase an additional 200,000 shares of
OSI Common Stock and HNC does not issue any additional shares or options, the
stockholders of HNC and OSI would own approximately ____% and ___%,
respectively, of the shares of HNC Common Stock outstanding and ___% and ___%,
respectively, of the shares of HNC Common Stock on a fully diluted basis
immediately following the Merger. This represents substantial reduction of the
ownership interest of the current stockholders of HNC and OSI, in each case
compared to their ownership interests in their respective companies before the
Effective Time. The issuance of additional shares of HNC Common Stock pursuant
to the OSI Options being assumed by HNC in the Merger, the future grant of
additional HNC stock options pursuant to the existing employee stock option
plans of HNC, the conversion of any of HNC's 4.75% Convertible Subordinated
Notes due 2003 and any issuance of additional shares to the former shareholders
of PCS or FTI, subject to
    



                                       16
<PAGE>   26

achievement of certain financial objectives by PCS and FTI, respectively, set
forth in their acquisition agreements with HNC, will result in further dilution
to the current stockholders of HNC and OSI.

   
           SHARES ELIGIBLE FOR FUTURE SALE. Sales of substantial amounts of HNC
Common Stock (including shares issued upon the exercise of outstanding options)
in the public market could adversely affect the market price of HNC Common Stock
prevailing from time to time and could impair the ability of HNC to raise
capital through the sale of equity or debt securities. Assuming that, at the
Effective Time, HNC will issue to the stockholders of OSI an aggregate of
approximately 2,507,507 shares of HNC Common Stock, immediately upon completion
of the Merger, approximately _______ of such shares will be freely tradable, and
the remainder can be publicly sold following publication of financial results
covering 30 days of combined operations of HNC and OSI after the Merger, subject
to volume and other limitations imposed upon affiliates of OSI under Rule 145
promulgated under the Securities Act. In addition, assuming that options to
purchase 1,887,500 shares of OSI Common Stock are outstanding immediately prior
to consummation of the Merger, approximately 449,111 additional shares of HNC
Common Stock will be reserved for issuance upon exercise of OSI Options to be
converted into HNC Options in the Merger. Substantially all of the approximately
_________ shares of HNC Common Stock outstanding immediately before the Merger
will either be freely tradable, or tradable within the volume and manner of sale
restrictions imposed under Rule 144 or Rule 145 promulgated under the Securities
Act. Any substantial sales of HNC securities in the public market could have a
material adverse effect on the market price of such securities.
    

   
           POOLING OF INTERESTS. To qualify the Merger as a pooling of interests
for accounting purposes, HNC, OSI and their respective affiliates must meet the
criteria for pooling of interests accounting established in opinions published
by the Accounting Principles Board and interpreted by the Financial Accounting
Standards Board and the Commission. These opinions are complex and the
interpretation of them is subject to change. Consummation of the Merger is
conditioned, among other things, upon (i) the receipt by OSI of a letter from
its independent accountants that, subject to customary qualifications, they
concur with management's conclusion that no conditions exist that would preclude
OSI from being a party to a business combination for which the pooling of
interests method of accounting would be available and (ii) receipt by HNC of a
letter from its independent accountants that, subject to customary
qualifications, they concur with management's conclusion that no conditions
exist that would preclude HNC from accounting for the Merger as a pooling of
interests. However, the availability of pooling of interests accounting
treatment for the Merger depends, in part, upon circumstances and events
occurring after the Effective Time. For example, affiliates of HNC and OSI must
not sell, or otherwise reduce their risk with respect to, any shares of stock,
except for a de minimus number as defined by certain Commission rules and
regulations, of either HNC or OSI capital stock during the period beginning 30
days before the Effective Time and continuing until the day that HNC publicly
announces financial results covering at least 30 days of combined operations of
HNC and OSI after the Merger. If the Merger is completed and the Effective Time
occurs during December 1998, HNC expects that such combined financial results
would be published in April 1999. If affiliates of HNC or OSI sell their shares
of HNC Common Stock prior to that time despite a contractual obligation not to
do so, the Merger may not qualify for accounting as a pooling of interests for
financial reporting purposes. The failure of the Merger to qualify for pooling
of interests accounting treatment for financial reporting purposes for any
reason would materially and adversely affect HNC's reported earnings and,
potentially, the price of the HNC Common Stock. See "Approval of the
Merger--Accounting Treatment."
    

RISKS RELATING TO HNC

   
           After consummation of the Merger, the holders of OSI Common Stock and
OSI Preferred Stock who receive HNC Common Stock under the terms of the Merger
Agreement will become subject to all of the following risk factors as
stockholders of HNC.
    

   
           POTENTIAL FLUCTUATIONS IN OPERATING RESULTS. HNC's revenues and
operating results have varied significantly in the past and may do so in the
future. Factors affecting HNC's revenues and operating results include: market
acceptance of HNC's products; the relatively large size and small number of
customer orders that may be received during a given period; customer
cancellation of long-term contracts yielding recurring revenues or customers'
ceasing their use of HNC's products for which HNC's fees are usage based; the
length of the sales cycle of HNC products; HNC's ability to develop, introduce
and market new products and product enhancements; the timing of new product
announcements and introductions by HNC and its competitors; changes in the mix
of HNC's distribution channels; changes in the level of HNC's operating
expenses; HNC's ability to achieve progress on percentage-of-completion
contracts; HNC's success in completing certain pilot installations for
contracted fees; competitive conditions in the industry; domestic and
international economic conditions; and market conditions in HNC's targeted
markets. In addition, license agreements entered into during a quarter may not
meet HNC's revenue recognition criteria. Therefore, even if HNC meets or exceeds
its forecast of aggregate licensing and other contracting activity, it is
possible that HNC's revenues would not meet expectations. Furthermore, HNC's
operating results may be affected by factors unique to certain of its product
lines. For example, HNC derives a substantial and increasing portion of its
revenues from its retail products, which are generally priced as 
    



                                       17
<PAGE>   27

   
"perpetual" license transactions in which HNC receives a one-time license fee.
HNC recognizes these fees as revenue upon delivery of the software and
acceptance by the customer. Thus, failure to complete a perpetual license
transaction during a fiscal quarter would preclude HNC from recognizing revenue
from that transaction in that quarter, and thus would have a disproportionate
adverse impact on HNC's operating results for that quarter.
    

   
           HNC expects fluctuations in its operating results to continue for the
foreseeable future. Consequently, HNC believes that period-to-period comparisons
of its financial results should not be relied upon as an indication of future
performance. Because HNC's expense levels are based in part on its expectations
regarding future revenues and in the short term are fixed to a large extent, HNC
may be unable to adjust its spending in time to compensate for any unexpected
revenue shortfall. Accordingly, HNC may not be able to maintain profitability on
a quarterly or annual basis in the future. Due to the foregoing factors, it is
possible that in some future quarter HNC's operating results will be below the
expectations of public market analysts and investors. In that event, the price
of HNC Common Stock and, in turn, the price of HNC's 4.75% Convertible
Subordinated Notes due 2003, would likely be materially adversely affected. See
"HNC Management's Discussion and Analysis of Financial Condition and Results of
Operations."
    

           LENGTHY AND UNPREDICTABLE SALES CYCLE. Due in part to the
mission-critical nature of certain of HNC's applications, potential customers
perceive high risk in connection with adoption of HNC's products. As a result,
customers have been cautious in making decisions to acquire HNC's products. In
addition, because the purchase of HNC's products typically involves a
significant commitment of capital and may involve shifts by the customer to a
new software and/or hardware platform, delays in completing sales can arise
while customers complete their internal procedures to approve large capital
expenditures and test and accept new technologies that affect key operations.
For these and other reasons, the sales cycle associated with the purchase of
HNC's products is typically lengthy, unpredictable and subject to a number of
significant risks over which HNC has little or no control, including customers'
budgetary constraints and internal acceptance reviews. The sales cycle
associated with the licensing of HNC's products can typically range from 60 days
to 18 months. As a result of the length of the sales cycle and the typical size
of customers' orders, HNC's ability to forecast the timing and amount of
specific sales is limited. A lost or delayed sale could have a material adverse
effect on HNC's business, financial condition and results of operations. See
"HNC Management's Discussion and Analysis of Financial Condition and Results of
Operations" and "Business of HNC--Sales and Marketing."

   
           RECENT AND FUTURE ACQUISITIONS. Between August 1996 and August 1998,
HNC acquired five businesses and purchased one product line. HNC acquired Risk
Data and Retek in 1996, CompReview in 1997 and PCS and FTI in 1998. Also in
1998, HNC purchased the ATACS product line. HNC believes that its future growth
depends, in part, upon the success of these and possible future acquisitions.
There can be no assurance that HNC will successfully identify, acquire on
favorable terms or integrate such businesses, products, services or
technologies. HNC may in the future face increased competition for acquisition
opportunities, which may inhibit HNC's ability to consummate suitable
acquisitions and increase the costs of completing such acquisitions. The
acquisitions of Risk Data, Retek, CompReview, PCS and FTI, and the ATACS product
line, as well as other potential future acquisitions, will require HNC to
successfully manage and integrate such acquired businesses, which may be located
in diverse geographic locations. Acquiring other businesses also requires HNC to
successfully develop and market products to new industries and markets with
which HNC may not be familiar. It also requires HNC to coordinate (and possibly
change) the diverse operating structures, policies and practices of the acquired
companies and to integrate the employees of the acquired companies into HNC's
organization and culture. Failure of HNC to successfully integrate and manage
acquired businesses, to retain their employees, and to successfully address new
industries and markets associated with such acquired businesses, would have a
material adverse effect on HNC's business, financial condition and results of
operations. The acquisitions of Risk Data, Retek and CompReview have been
accounted for as poolings of interests. The acquisitions of PCS and FTI have
been accounted for as purchases. The acquisition of PCS resulted in an
accounting charge of approximately $4.0 million in the quarter ended March 31,
1998. The acquisitions of FTI and ATACS resulted in an accounting charge of
approximately $19.5 million in the quarter ended June 30, 1998. Any other future
acquisitions that may be accounted for as purchases may result in charges that
adversely affect HNC's earnings. Additional acquisitions may also involve the
issuance of shares of HNC's stock to owners of acquired businesses, resulting in
dilution in the percentage of HNC's stock owned by other stockholders. See
"Business of HNC--HNC's Strategy."
    

           RISKS ASSOCIATED WITH MANAGING GROWTH. In recent years, HNC has
experienced changes in its operations that have placed significant demands on
HNC's administrative, operational and financial resources. The growth in HNC's
customer base and expansion of its product functionality, together with its
acquisition of other businesses and their employees and expansion of its product
line into new markets, have challenged and are expected to continue to challenge
HNC's management and operations, including its sales, marketing, customer
support, research and development and 



                                       18
<PAGE>   28

finance and administrative operations. HNC's future performance will depend in
part on its ability to successfully manage change, both in its domestic and
international operations, and to adapt its operational and financial control
systems, if necessary, to respond to changes in its business and to facilitate
the integration of acquired businesses with HNC's operations. The failure of
HNC's management to effectively respond to and manage growth could have a
material adverse effect on HNC's business, financial condition and results of
operations.

   
           DEPENDENCE ON EMERGING TECHNOLOGIES AND MARKETS. The market for
predictive software solutions is still emerging. The rate at which businesses
have adopted HNC's products has varied significantly by market and by product
within each market, and HNC expects to continue to experience such variations
with respect to its target markets and products in the future. HNC has
introduced products for the healthcare/insurance, financial services and retail
markets. HNC has recently announced several new products, including PMAdvisor,
VeriComp, SelectCast, SelectResponse, SelectResource and SelectProfile. To date,
none of these products has achieved any significant degree of market acceptance,
and there can be no assurance that such products will ever be widely accepted.
Although businesses in HNC's target markets have recognized the advantages of
using predictive software solutions to automate the decision-making process,
many have developed decision automation systems internally rather than licensing
them from outside vendors. There can be no assurance that the markets for HNC's
products will continue to develop or that HNC's products will be widely
accepted, if at all. If the markets for HNC's new or existing products fail to
develop, or develop more slowly than anticipated, HNC's sales would be
negatively impacted, which would have a material adverse effect on HNC's
business, financial condition and results of operations. See "Business of
HNC--Emerging Market Opportunities."
    

   
           RISKS ASSOCIATED WITH TECHNOLOGICAL CHANGE AND DELAYS IN DEVELOPING
NEW PRODUCTS. The market for HNC's predictive software solutions is
characterized by rapidly changing technology and improvements in computer
hardware, network operating systems, programming tools, programming languages,
operating systems and database technology. HNC's success will depend upon its
ability to continue to develop and maintain competitive technologies, enhance
its current products and develop, in a timely and cost-effective manner, new
products that meet changing market conditions, including evolving customer
needs, new competitive product offerings, emerging industry standards and
changing technology. For example, the rapid growth of the Internet environment
creates new opportunities, risks and uncertainties for businesses, such as HNC,
which develop software solutions that now may have to be designed to operate in
Internet, intranet and other on-line environments. HNC may not be able to
develop and market, on a timely basis, or at all, product enhancements or new
products that respond to changing technologies. HNC has previously experienced
significant delays in the development and introduction of new products and
product enhancements, primarily due to difficulties with model development,
which has in the past required multiple iterations, as well as difficulties with
acquiring data and adapting to particular operating environments. The length of
these delays has varied depending upon the size and scope of the project and the
nature of the problems encountered. Any significant delay in the completion of
new products, or the failure of such products, if and when installed, to achieve
any significant degree of market acceptance, would have a material adverse
effect on HNC's business, financial condition and results of operations. Any
failure by HNC to anticipate or to respond adequately to changing technologies,
or any significant delays in product development or introduction, could cause
customers to delay or decide against purchases of HNC's products and would have
a material adverse effect on HNC's business, financial condition and results of
operations.
    

   
           PRODUCT CONCENTRATION. HNC currently has one product or product line
in each of its three target markets that accounts for a majority of HNC's total
revenues from that market. These products in the aggregate accounted for 60.0%,
59.1%, 57.9% and 51.1% of HNC's total revenues in 1995, 1996, 1997 and the first
nine months of 1998, respectively. In the healthcare/insurance market, HNC's
revenues from its CRLink product accounted for 29.8%, 24.6%, 23.0% and 21.9% of
HNC's total revenues in 1995, 1996, 1997 and the first nine months of 1998,
respectively, and are expected to account for a substantial portion of HNC's
total revenues for the foreseeable future. Continued market acceptance of CRLink
will be affected by future product enhancements and competition. Decline in
demand for, or use of, CRLink, whether as a result of competition,
simplification of state workers' compensation fee schedules, changes in the
overall payment system or regulatory structure for workers' compensation claims,
technological change, an inability to obtain or use state fee schedule or claims
data, saturation of market demand, industry consolidation or otherwise, could
result in decreased revenues from CRLink, which could have a material adverse
effect on HNC's business, financial condition and results of operations.
Further, revenues from the Retek Merchandising System ("RMS"), a retail
management product, accounted for 2.2%, 13.6%, 18.9% and 14.4% of HNC's total
revenues in 1995, 1996, 1997 and the first nine months of 1998, respectively,
and are expected to continue to account for a substantial portion of HNC's
revenues in the foreseeable future. Continued market acceptance of RMS will be
affected by the quality and timely introduction of future product enhancements
and competition. Decline in demand for, or use of, RMS as a result of continued
entry into the retail inventory management market by vendors that may have
significantly greater resources and a broader customer base than HNC could
result in 
    



                                       19
<PAGE>   29

   
decreased revenues from RMS, which could have a material adverse effect on HNC's
business, financial condition and results of operations. In addition, decline in
demand for RMS, as a result of technological change, saturation of market
demand, industry consolidation or otherwise could have a material adverse effect
on HNC's business, financial condition and results of operations. Revenues from
HNC's Falcon product line for credit card fraud detection accounted for 28.0%,
20.9%, 16.0% and 14.8% of HNC's total revenues in 1995, 1996, 1997 and the first
nine months of 1998, respectively, and are expected to continue to account for a
substantial portion of HNC's total revenues in the foreseeable future. Continued
market acceptance of the Falcon product line will be affected by the quality and
timely introduction of future product enhancements and competition. In addition,
it is possible that patterns of credit card fraud may change in a manner that
the Falcon product line would not detect and that other methods of credit card
fraud prevention may reduce customers' needs for the Falcon product line. As a
result of increasing saturation of market demand for the Falcon product line,
HNC may also need to rely increasingly on international sales to maintain or
increase Falcon revenue levels. Furthermore, Falcon customers are banks and
related financial institutions. Accordingly, HNC's future success depends upon
the capital expenditure budgets of such customers and the continued demand by
such customers for Falcon products. The financial services industry tends to be
cyclical in nature, which may result in variations in demand for HNC's products.
In addition, there has been and continues to be consolidation in the financial
services industry, which in some cases has led to lost or delayed sales and
reduced HNC's financial solutions customer base, which may lead to reduced
demand for HNC's products. Industry consolidation also could affect HNC's base
of recurring revenues on transaction based contracts as customers combine their
operations under one contract with HNC that, in some cases, could result in
lower payments or fees than those previously paid by such customers. Decline in
demand for, or use of, Falcon, whether as a result of competition, technological
change, change in fraud patterns, the cyclical nature of the financial service
industry, saturation of market demand, fluctuations in interest rates, industry
consolidation, reduction in capital spending or otherwise, could have a material
adverse effect on HNC's business, financial condition and results of operations.
See "Business of HNC--Markets and Products."
    

           DEPENDENCE ON DATA. The development, installation and support of
HNC's credit card fraud control and profitability management, loan underwriting
and certain healthcare/insurance products require periodic statistical model
updates. HNC must develop or obtain a reliable source of sufficient amounts of
current and statistically relevant data to analyze transactions and update its
models. For example, in the electronic payments market, the data required by HNC
are collected privately and maintained in proprietary databases. As a result,
HNC and its Falcon and ProfitMax customers enter into agreements pursuant to
which customers agree to provide the data HNC requires to analyze transactions,
report results and build new fraud detection and profitability models. Many of
HNC's healthcare/insurance products use historical workers' compensation claims
data obtained from customers. CRLink also uses data from state workers'
compensation fee schedules adopted by state regulatory agencies, and certain
third parties have asserted copyright interests in such data. In most cases,
such data must be periodically updated and refreshed to enable HNC's predictive
software products to continue to work effectively. In addition, the development
of new and enhanced products also depends to a significant extent on the
availability of sufficient amounts of statistically relevant data to enable HNC
to develop models. There can be no assurance that HNC will be able to continue
to obtain adequate amounts of statistically relevant data on a timely basis, in
the required formats or on reasonable terms and conditions, whether from
customers or commercial suppliers. Any such failure by HNC to obtain required
data when it is needed, for a reasonable price and on reasonable terms, could
have a significant negative impact on existing product performance, new product
development and product pricing which could in turn have a material adverse
effect on HNC's business, financial condition and results of operations. See
"Business of HNC--Customer Service and Support."

   
           COMPETITION. The market for predictive software solutions is
intensely competitive and subject to rapid change. Competitors, many of which
have substantially greater financial resources than HNC, vary in size and in the
scope of the products and services they offer. HNC encounters competition from a
number of sources, including (i) other application software companies, including
enterprise software vendors, (ii) management information systems departments of
customers and potential customers, including financial institutions, insurance
companies and retailers, (iii) third-party professional services organizations,
including consulting divisions of public accounting firms, (iv) hardware
suppliers that bundle or develop complementary software, (v) network and service
providers that seek to enhance their value-added services, (vi) neural-network
tool suppliers and (vii) managed care organizations. In the healthcare/insurance
market, HNC has experienced competition primarily from National Council on
Compensation Insurance ("NCCI"), Corporate Systems and CSC Incorporated. In the
workers' compensation and medical cost administration market, HNC has
experienced competition from MediCode, Inc. ("MediCode"), Medata, Inc. and
Embassy Software with regard to software licensing, and Intracorp and Corvel
Corporation in the service bureau operations market. Additionally, HNC has faced
competition from Automatic Data Processing, Inc. ("ADP") in the automobile
accident medical claims market. In the financial solutions market, HNC has
experienced competition from Fair, Isaac & Co., Inc.,
    



                                       20
<PAGE>   30
   
Cogensys (a subsidiary of Policy Management Systems Corporation), Federal
National Mortgage Association ("Fannie Mae"), Federal Home Loan Mortgage
Corporation ("Freddie Mac"), International Business Machines Corporation
("IBM"), Nestor, Inc., NeuralTech Inc., Neuralware Inc., PMI Mortgage Services
Co., VISA International and others. In the retail solutions market, HNC has
experienced competition from JDA Software Group, Inc., SAP AG, PeopleSoft, Inc.,
IBM, Manugistics Group, Inc. and others. HNC expects to experience additional
competition from other established and emerging companies, as well as from other
technologies. For example, HNC's Falcon product competes against other methods
of preventing credit card fraud, such as card activation programs, credit cards
that contain the cardholder's photograph, smart cards and other card
authorization techniques. Increased competition, whether from other products or
new technologies, could result in price reductions, fewer customer orders,
reduced gross margins and loss of market share, any of which could materially
adversely affect HNC's business, financial condition and results of operations.
    

           HNC believes that most of its products are currently priced at a
premium when compared to its competitors' products. The market for HNC's
products is highly competitive, and HNC expects that it will face increasing
pricing pressures from its current competitors and new market entrants. In
particular, increased competition could reduce or eliminate such premiums and
cause further price reductions. In addition, such competition could adversely
affect HNC's ability to obtain new long-term contracts and renewals of existing
long-term contracts on terms favorable to HNC. Any reduction in the price of
HNC's products could materially adversely affect HNC's business, financial
condition and results of operations.

           Some of HNC's current competitors, and many of HNC's potential
competitors, have significantly greater financial, technical, marketing and
other resources than HNC and broader integrated product lines. As a result, they
may be able to respond more quickly to new or emerging technologies and changes
in customer requirements or to devote greater resources to the development,
promotion and sale of their products than HNC and may possess marketing
advantages due to their ability to market integrated suites of related products
that are vital to the customer's computing infrastructure. In addition, current
and potential competitors have established or may establish cooperative
relationships among themselves or with third parties to increase the ability of
their products to address the needs of HNC's prospective customers. Accordingly,
it is possible that new competitors or alliances among competitors may emerge
and rapidly gain significant market share. Also, HNC relies upon its customers
to provide data, expertise and other support for the ongoing updating of HNC's
models. HNC's customers, most of which have significantly greater financial and
marketing resources than HNC, may compete with HNC in the future or otherwise
discontinue their relationships with or support of HNC. There can be no
assurance that HNC will be able to compete successfully against current and
future competitors or that competitive pressures faced by HNC will not
materially adversely affect its business, financial condition and results of
operations. See "Business of HNC--Competition."

           RISKS ASSOCIATED WITH RECRUITING AND RETAINING QUALIFIED PERSONNEL.
HNC's success depends to a significant degree upon the continued service of
members of HNC's senior management and other key research, development, sales
and marketing personnel. Accordingly, the loss of any of HNC's senior management
or key research, development, sales or marketing personnel could have a material
adverse effect on HNC's business, financial condition and results of operations.
Only a small number of employees have employment agreements with HNC, and there
can be no assurance that such agreements will result in the retention of these
employees for any significant period of time. In addition, the untimely loss of
a member of the management team or a key employee of a business acquired by HNC
could have a material adverse effect on HNC's business, financial condition and
results of operations, particularly if such loss occurred before HNC has had
adequate time to familiarize itself with the operating details of that business
and provide a suitably experienced replacement for such employee. In the past,
HNC has experienced difficulty in recruiting a sufficient number of qualified
sales and technical employees. In addition, competitors may attempt to recruit
HNC's key employees. There can be no assurance that HNC will be successful in
attracting, assimilating and retaining such personnel. The failure to attract,
assimilate and retain key personnel could have a material adverse effect on
HNC's business, financial condition and results of operations. See "Business of
HNC--Employees" and "Management of HNC."

   
           RISKS ASSOCIATED WITH INTERNATIONAL SALES. In 1995, 1996, 1997 and
the first nine months of 1998, international operations and export sales
(including sales in Canada) represented 12.6%, 17.7%, 16.8% and 24.8% of HNC's
total revenues, respectively. HNC intends to continue to expand its operations
outside the United States and to enter additional international markets, which
will require significant management attention and financial resources. For
certain more mature products, such as Falcon, HNC may need to increase
international sales in order to continue to expand the product's customer base.
HNC has committed and continues to commit significant time and development
resources to customizing certain of its products for selected international
markets and to developing international sales and support channels. There can be
no assurance that HNC's efforts to develop products, databases and models for
targeted international markets or to 
    



                                       21
<PAGE>   31

develop additional international sales and support channels will be successful.
The failure of such efforts, which can entail considerable expense, could have a
material adverse effect on HNC's business, financial condition and results of
operations.

   
           International sales are subject to additional inherent risks,
including longer payment cycles, unexpected changes in regulatory requirements,
import and export restrictions and tariffs, difficulties in staffing and
managing foreign operations, the burdens of complying with a variety of foreign
laws, greater difficulty or delay in accounts receivable collection, potentially
adverse tax consequences and political and economic instability. HNC's
international sales are currently denominated predominately in United States
dollars and a small portion are denominated in British pounds sterling. An
increase in the value of the United States dollar relative to foreign currencies
could make HNC's products more expensive, and therefore potentially less
competitive, in foreign markets. In the future, to the extent that HNC's
international sales are denominated in local currencies, foreign currency
translations may contribute to significant fluctuations in HNC's business,
financial condition and results of operations. If for any reason, exchange or
price controls or other restrictions on foreign currencies are imposed, HNC's
business, financial condition and results of operations could be materially
adversely affected. See "Business of HNC--Sales and Marketing."

           RISKS ASSOCIATED WITH CHANGING REGULATORY ENVIRONMENT. HNC's
customers are subject to a number of government regulations and certain other
industry standards with which many of HNC's key products must comply. For
example, HNC's financial services products are affected by Regulation B
promulgated under the Equal Credit Opportunity Act, by regulations governing the
extension of credit to consumers and by Regulation E promulgated under the
Electronic Fund Transfers Act governing the transfer of funds from and to
consumer deposit accounts, as well as VISA and MasterCard electronic payment
standards. In the mortgage services market, HNC's products are affected by
regulations such as Fannie Mae and Freddie Mac regulations for conforming loans.
In addition, recent regulatory initiatives have restricted the availability of
bank and credit bureau data, reflecting a consumer privacy trend that could
limit HNC's ability to obtain or use certain credit-related information. It is
also possible that insurance-related regulations may in the future apply to
HNC's healthcare/insurance products. In addition, if state-mandated workers'
compensation laws or regulations or state workers' compensation fee schedules
are simplified, such changes would diminish the need for, and the benefit
provided by, the CRLink product. In many states, including California, there
have been periodic legislative efforts to reform workers' compensation laws in
order to reduce the cost of workers' compensation insurance and to curb abuses
of the workers' compensation system. Changes in workers' compensation laws or
regulations could adversely affect HNC's healthcare/insurance products by making
them obsolete, or by requiring extensive changes in these products to reflect
new workers' compensation rules. To the extent that HNC sells new products
targeted to markets that include regulated industries and businesses, HNC's
products will need to comply with these additional regulations. Any failure of
HNC's products to comply with existing or future regulations and standards could
result in legal action against HNC or its customers by regulatory authorities or
by third parties, including actions seeking civil or criminal penalties,
injunctions against HNC's use of data or civil damages, any of which could have
a material adverse effect on HNC's business, financial condition and results of
operations. HNC may also be liable to its customers for failure of its products
to comply with such regulatory requirements. Furthermore, changes to these
regulations and standards or the adoption of new regulations or standards that
affect HNC's products could affect the performance of such products and have a
material adverse effect on HNC's business, financial condition and results of
operations.


           PROTECTION OF INTELLECTUAL PROPERTY. HNC relies on a combination of
patent, copyright, trademark and trade secret laws and confidentiality
procedures to protect its proprietary rights. HNC currently owns eleven issued
United States patents and has four United States patent applications pending.
HNC has applied for additional patents for its Falcon technology in Canada,
Europe and Japan and for its MIRA product in Australia, Canada and Europe. HNC's
issued United States patents expire at dates that range from December 2008 to
February 2016. There can be no assurance that patents will be issued with
respect to pending or future patent applications or that HNC's patents will be
upheld as valid or will prevent the development of competitive products. HNC
also seeks to protect its software, documentation and other written materials
under trade secret and copyright laws, which afford only limited protection. As
part of its confidentiality procedures, HNC generally enters into invention
assignment and proprietary information agreements with its employees and
independent contractors and nondisclosure agreements with its distributors,
corporate partners and licensees, and limits access to and distribution of its
software, documentation and other proprietary information. Despite these
precautions, it may be possible for a third party to copy or otherwise to obtain
and use HNC's products or technology without authorization, or to develop
similar technology independently. In addition, to ensure that customers will not
be adversely affected by an interruption in HNC's business, HNC places source
code for certain of its products into escrow, which may increase the likelihood
of misappropriation or other misuse of HNC's intellectual 

    



                                       22
<PAGE>   32

property. Moreover, effective protection of intellectual property rights may be
unavailable or limited in certain foreign countries in which HNC has done and
may do business. Also, HNC has developed technologies under research projects
conducted under agreements with various United States Government agencies or
subcontractors to such agencies. Although HNC has acquired certain commercial
rights to such technologies, the United States Government typically retains
ownership of certain intellectual property rights and licenses in the
technologies developed by HNC under such contracts, and in some cases can
terminate HNC's rights in such technologies if HNC fails to commercialize them
on a timely basis. In addition, under certain United States Government
contracts, the results of HNC's research may be made public by the government,
which could limit HNC's competitive advantage with respect to future products
based on such research. See "Business of HNC--Intellectual Property and Other
Proprietary Rights."

   
           INFRINGEMENT OF PROPRIETARY RIGHTS. In the past, HNC has received
communications from third parties asserting that HNC trademarks infringe such
other parties' trademarks, or that data used by HNC is copyrighted by such third
party, none of which has resulted in litigation or losses to HNC. In November
1998, Nestor, Inc. ("Nestor") filed a complaint against HNC alleging that HNC is
infringing a United States patent issued to Nestor and that a United States
patent issued to HNC is invalid and seeking damages and injunctive and
declaratory relief. The complaint also seeks treble compensatory damages,
punitive damages and injunctive relief for alleged violations of the Sherman
Antitrust Act and the Rhode Island Antitrust Act. See "Business of HNC--Legal
Proceedings." Given HNC's ongoing efforts to develop and market new technologies
and products, HNC may be subject to claims from other third parties asserting
that HNC's products infringe, or may infringe, their intellectual property
rights. If as a result of any such claims HNC were precluded from using certain
technologies or intellectual property rights, licenses to such disputed
third-party technology or intellectual property rights might not be available on
reasonable commercial terms, if at all. Furthermore, HNC may initiate claims or
litigation against third parties for infringement of HNC's proprietary rights or
to establish the validity of HNC's proprietary rights. Litigation, either as
plaintiff or defendant, could result in significant expense to HNC and divert
the efforts of HNC's technical and management personnel from productive tasks,
whether or not such litigation is resolved in favor of HNC. In the event of an
adverse ruling in any such litigation, HNC might be required to pay substantial
damages, discontinue the use and sale of infringing products, expend significant
resources to develop non-infringing technology or obtain licenses to infringing
technology, and a court might invalidate HNC's patents, trademarks or other
proprietary rights. In the event of a successful claim against HNC and the
failure of HNC to develop or license a substitute technology, HNC's business,
financial condition and results of operations would be materially and adversely
affected. As the number of software products increases and the functionality of
these products further overlaps, HNC believes that software developers may
become increasingly subject to infringement claims. Any such claims, with or
without merit, can be time consuming and expensive to defend and could
materially and adversely affect HNC's business, financial condition and results
of operations. See "Business of HNC--Intellectual Property and Other Proprietary
Rights."
    

           RISK OF PRODUCT DEFECTS AND PRODUCT LIABILITY. Software products as
complex as those offered by HNC often contain undetected errors or failures when
first introduced or as new versions are released. In addition, to the extent
that HNC may have to develop new products that operate in new environments, such
as the Internet, the possibility for program errors and failures may increase
due to factors such as the use of new technologies or the need for more rapid
product development that is characteristic of the Internet market. Despite
pre-release testing by HNC and by current and potential customers, there still
may be errors in new products, even after commencement of commercial shipments.
The occurrence of such errors could result in delay in, or failure to achieve,
market acceptance of HNC's products, which could have a material adverse effect
on HNC's business, financial condition and results of operations. Although HNC's
license agreements with its customers typically contain provisions designed to
limit HNC's exposure to potential product liability claims, it is possible that
such limitation of liability provisions may not be effective as a result of
existing or future laws or judicial decisions. Because HNC's products are used
in business-critical applications, any errors or failures in such products may
give rise to substantial product liability claims, which could have a material
adverse effect on HNC's business, financial condition and results of operations.

           VOLATILITY OF HNC COMMON STOCK PRICE. HNC's Common Stock has
experienced significant price volatility and such volatility may be expected to
recur in the future. Factors such as announcements of the introduction of new
products by HNC or its competitors, acquisitions of businesses or products by
HNC, quarter-to-quarter variations in HNC's operating results and the gain or
loss of significant orders, as well as market conditions in the technology and
emerging growth company sectors, may have a significant impact on the market
price of HNC Common Stock. The trading prices of many technology companies'
stocks, including HNC Common Stock, reflect price/earnings ratios substantially
above historical norms. The trading price of HNC Common Stock may not remain at
or near its current level. Further, the stock market has experienced a recent
downward trend and has historically experienced extreme volatility that has
particularly affected the market prices of securities of many technology
companies and that often has been unrelated or disproportionate to the operating
performance of such companies. These market fluctuations may adversely affect
the price of HNC Common Stock.



                                       23
<PAGE>   33
   
           YEAR 2000 COMPLIANCE. It is generally anticipated that many
organizations will experience operational difficulties at the beginning of the
Year 2000 as a result of the fact that many currently installed computer systems
and software products are coded to accept only two digit entries in the date
code field. Significant uncertainty exists in the software and other industries
concerning the scope and magnitude of problems associated with the century
change. As early as 1997, HNC had begun the process of planning and updating, in
some cases, its earlier versions of existing software products. More recent
versions of these same products as well as new products were developed with Year
2000 date processing in mind. To track performance of completing any remaining
compliance work as well as to assess the Year 2000 issue more broadly, HNC
developed a Year 2000 project plan.

          HNC initiated a company-wide Year 2000 Project (Y2k Project) during
1998 to more formally monitor compliance of its Year 2000 exposure for each
major business unit and has divided the project into three major sections that
address its critical date sensitive components: software products, information
technology ("IT") infrastructure, and non-IT systems. The Y2k Project consists
of (i) assessing the current state of readiness for all critical components,
(ii) developing project plans that track the status of work performed toward
completing planned solutions and (iii) developing contingency plans.
    

          In August 1998, IT directors of all significant business units were
asked to inventory all major components and provide the current state of
readiness as well as an indication as to when readiness would otherwise be
expected. In addition, each major business unit was asked to provide project
plan status reports that indicate how compliance would be achieved, as well as
to quantify the extent and timing of the effort and to identify when testing of
the solution would be completed. Finally, each major business unit was asked to
consider various scenarios that might impact successful implementation of their
Year 2000 solutions and to develop alternative or back-up plans to mitigate the
risk of not being ready on time.

   
           HNC has completed the initial stage of its Y2k Project by taking
inventory of its major software products, identifying the state of readiness for
each and developing project plans for completing and implementing designed
solutions. Based on HNC's assessment to date, HNC believes that the current
version of each of its major software products is Year 2000 compliant.
However, there can be no assurance that all of HNC's customers will install the
Year 2000 compliant version of HNC's products in a timely manner, which could
lead to failure of customer systems and product liability claims against HNC.

           HNC also expects to complete its review of the remaining major
components of its IT infrastructure, such as its applications developed in-house
or purchased from a supplier, by the end of 1998.

          HNC is reviewing its major non-IT system components for Year 2000
compliance and intends to take appropriate action based on the results of such
review. Non-IT systems include hardware and other electronic systems, excluding
application systems, used in the operation of HNC's business. The assessment and
project plans of non-IT Year 2000 solutions are currently expected to be
available by the end of 1998.

           HNC's plan for the Year 2000 calls for compliance verification of
third parties that supply software and information systems to HNC for both IT
and non-IT systems and communication with significant suppliers to determine the
readiness of third parties' remediation of their own Year 2000 issues. As part
of its assessment, HNC is evaluating the level of validation it will require of
third parties to ensure their Year 2000 readiness. To date, HNC has not
encountered any material Year 2000 issues concerning its computer systems.

          During the first quarter of 1999, HNC expects to have significantly
completed its assessment of the most reasonably likely worst case scenarios as
well as identifying potential contingency plans should HNC's Y2k Project not be
fully completed in time.

           All costs associated with carrying out HNC's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
preparation for the Year 2000 has not been, and is not expected to be, material
to HNC's business, financial condition or results of operations. Nevertheless,
HNC may not timely identify and remediate all significant Year 2000 problems and
remedial efforts may involve significant time and expense. Failure to identify
such problems could, for example, impair HNC's internal product development
efforts and internal management systems. There can be no assurance that any Year
2000 compliance problems of HNC or its customers or suppliers will not have a
material adverse effect on HNC's business, financial condition and results of
operations.
    

           The inability of HNC to complete its assessment and any necessary
modifications to recently acquired products could have a material adverse effect
on HNC's business, financial condition and results of operations. Even if HNC's
products are Year 2000 compliant, HNC may in the future be subject to claims
based on Year 2000 issues in the products of other companies, or issues arising
from the integration of multiple products within a system. The costs of
defending and resolving Year 2000-related disputes, and any liability of HNC for
Year 2000-related damages, including consequential damages, could have a
material adverse effect on HNC's business, financial condition and results of
operations. Further, HNC's products are generally used with enterprise systems
involving complex software products developed by other vendors, which may not be
Year 2000 compliant. In particular, many of HNC's customers are financial
institutions, insurance companies and other companies with insurance and
financial services businesses, all of which use legacy computer systems that are
expected to be particularly susceptible to Year 2000 compliance issues. If HNC's
customers are unable to use their information systems because of the failure of
such noncompliant systems or software or for any other reason, there would be a
decrease in the volume of transactions that HNC's customers process using HNC's
products. As a result, HNC's recurring revenue in the form of usage-based
transactional fees from customers in the insurance and financial solutions
markets would decline, which would have a material adverse effect on HNC's
business, financial condition and results of operations. Such failure could also
affect the perceived performance of HNC's products, which could have a negative
effect on HNC's competitive position. In addition, HNC believes that the
purchasing patterns of customers and potential customers may be affected by Year
2000 issues as companies expend significant resources to correct or patch their
current software systems for Year 2000 compliance. These expenditures may result
in reduced funds available to purchase software products such as those offered
by HNC, which could result in a material adverse effect on HNC's business,
financial condition and results of operations.


           HNC is also reviewing its major internal corporate systems for Year
2000 compliance and intends to take appropriate action based on the results of
such review. HNC's plan for the Year 2000 calls for compliance verification of
external vendors supplying software and information systems to HNC and
communication with significant suppliers to determine the readiness of third
parties' remediation of their own Year 2000 issues. As part of its assessment,
HNC is evaluating the level of validation it will require of third parties to
ensure their Year 2000 readiness. To date, HNC has not encountered any material
Year 2000 issues concerning its computer systems. HNC plans to complete its Year
2000 research and testing and create any necessary contingency plans by the end
of 1998. All costs associated with carrying out HNC's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
preparation for the Year 2000 has not been, and is not expected to be, material
to HNC's business, financial condition or results of operations. Nevertheless,
HNC may not timely identify and remediate all significant Year 2000 problems and
remedial efforts may involve significant time and expense. Failure to identify
such problems could, for example, impair HNC's internal product development
efforts and internal management systems. There can be no assurance that any Year
2000 compliance problems of HNC or its customers or suppliers will not have a
material adverse effect on HNC's business, financial condition and results of
operations.

   
           FACTORS INHIBITING TAKEOVER. The HNC Board of Directors is authorized
to issue up to 4,000,000 shares of Preferred Stock and to determine the price,
rights, preferences, privileges and restrictions, including voting rights, of
those shares without any further vote or action by HNC's stockholders. The
rights of the holders of HNC Common Stock will be subject to, and may be
adversely affected by, the rights of the holders of any HNC Preferred Stock that
may be issued in the future. The issuance of Preferred Stock, while providing
desirable flexibility in connection with possible acquisitions and other
corporate purposes, could have the effect of making it more difficult for a
third party to acquire a majority of the outstanding voting stock of HNC. HNC
has no current plans to issue shares of Preferred Stock. In addition, Section
203 of the DGCL restricts certain business combinations with any "interested 
stockholder" as defined by such statute. The statute may have the effect of 
delaying, deferring or preventing a change in control of HNC.
    



                                       24
<PAGE>   34

RISKS RELATING TO OSI

   
           LIMITED OPERATING HISTORY; HISTORY OF LOSSES. OSI was incorporated in
May 1992 and did not sell its first product until the second quarter of 1995.
Accordingly, OSI's prospects must be considered in light of the risks, expenses
and difficulties frequently encountered by companies with limited operating
histories. Although OSI has experienced revenue growth in recent periods,
historical growth rates may not be sustained and are not necessarily indicative
of OSI's future operating results. OSI incurred operating losses of $1.9
million, $3.8 million, $3.3 million and $4.2 million for 1995, 1996, 1997 and
the first nine months of 1998, respectively. There can be no assurance that
operating losses will not increase in the future or that OSI will ever achieve
or sustain profitability on a quarterly or annual basis. To the extent that
OSI's revenues do not grow at anticipated rates, increases in OSI's operating
expenses precede or are not subsequently followed by commensurate increases in
its revenues or OSI is unable to adjust its operating expense levels
accordingly, OSI's business, financial condition and results of operations will
be materially adversely affected. As of June 30, 1998, OSI had an accumulated
deficit of $12.8 million.
    

           POTENTIAL FLUCTUATIONS IN OPERATING RESULTS. OSI's revenues and
operating results have varied substantially from quarter to quarter.
Consequently, OSI believes that period-to-period comparisons of its results of
operations are not necessarily meaningful. OSI's quarterly operating results may
continue to fluctuate due to a number of factors, including the timing, size and
nature of OSI's licensing transactions, lengthy and unpredictable sales cycles,
the timing of introduction and market acceptance of new products or product
enhancements by OSI or its competitors, product and price competition, the
relative proportions of revenues derived from license fees and services, changes
in OSI's operating expenses, the existence of software bugs or other product
quality problems, personnel changes and fluctuations in economic and financial
market conditions.

   
           OSI recognizes software license revenues upon delivery and, if
required by the contract, upon customer acceptance if the acceptance criteria is
other than perfunctory. Delivery and acceptance of an OSI software product
typically does not occur in the same quarter in which the software license
agreement for the system is signed. As a result, OSI is constrained in its
ability to increase its software license revenue in any quarter if there are
unexpected delays in delivery or required acceptance of systems for which
software licenses were signed in previous quarters. Implementation of The
Complete Banking Solution and/or The Complete Credit Union Solution typically
occurs over a 14 to 24 week period, and OSI currently has limited implementation
resources. As a result of OSI's limited operating history and limited experience
in the implementation of the OSI System, OSI may from time to time experience
delays and difficulties in implementation of the OSI System. Delays in the
delivery, implementation or any required acceptance of OSI's products, including
delays resulting from constraints upon OSI's limited installation and
implementation resources, could materially adversely affect OSI's quarterly
results of operations. In addition, increased sales and marketing expenses for
any given quarter will negatively impact OSI's operating results for that
quarter if associated revenues are not recognized until a subsequent quarter.
    

           OSI's expense levels are based, in significant part, on its
expectations as to future revenues and are largely fixed in the short term. As a
result, OSI may be unable to adjust spending in a timely manner to compensate
for any unexpected shortfall in revenues. Accordingly, any significant shortfall
of revenues in relation to OSI's expectations would have an immediate and
materially adverse effect on OSI's business, financial condition and results of
operations. In addition, OSI plans to increase its operating expenses to expand
its installation, product development, sales and marketing and administrative
organizations. The timing of such expansion and the rate at which new personnel
become productive could cause material fluctuations in OSI's quarterly results
of operations.

           ACCEPTANCE OF OSI SYSTEM. OSI's revenues are derived primarily from
two sources: (i) license fees for software products and (ii) fees for a full
range of services complementing its products, including implementation, training
and support and maintenance services. Substantially all of these fees are
attributable to licenses of the OSI System. Although the use of client/server
technology has grown in the banking and credit union industry in recent years,
the client/server market is still an emerging market. Moreover, banks and credit
unions historically have been slow to adapt to and accept new technologies,
including client/server systems. OSI's success in penetrating the banking
industry, in particular large banks, may be adversely affected by the
unwillingness of such banks to incur the cost and effort to convert from their
current system to a client/server system and by the fact that client/server core
processing systems have not yet achieved widespread acceptance. OSI's future
financial performance will depend in large part on continued growth in the
number of banks and credit unions utilizing client/server technology.
Accordingly, if the client/server market fails to grow or grows more slowly than
OSI currently anticipates, OSI's business, financial condition and results of
operations could be materially adversely affected. In addition, a significant
portion of all banks and credit unions have traditionally satisfied 



                                       25
<PAGE>   35

   
their information technology needs through a service bureau or outsourcing
solution. Upon purchasing the OSI System, these customers will be required to
employ information technology personnel in order to successfully operate and
maintain the OSI System. There can be no assurance that OSI's customers will be
able to hire and retain such personnel or that any inability to do so will not
affect their ability to successfully operate and maintain the OSI System, which
could have a material adverse effect on OSI's business, financial condition and
results of operations. In addition, OSI's future financial performance will
depend in part on the successful development, introduction and customer
acceptance of new and enhanced versions of the OSI System and other products. A
decline in demand for, or failure to achieve broad market acceptance of, the OSI
System or any enhanced version as a result of competition, technological change
or otherwise, could have a material adverse effect on OSI's business, financial
condition and results of operations.
    

           DEPENDENCE ON NEW PRODUCTS AND RAPID TECHNOLOGICAL CHANGE; PRODUCT
DEVELOPMENT RISK. The client/server application software market is characterized
by rapid technological change, frequent new product introductions and evolving
industry standards. The introduction of products embodying new technologies and
the emergence of new industry standards can render existing products obsolete
and unmarketable in short periods of time. OSI expects that third parties will
develop and introduce new products and services and enhancements thereto, which
will compete with the products and services offered by OSI. The life cycles of
OSI's products are difficult to estimate and the return to OSI (in terms of
revenue) on the funds and time expended to develop a new product or enhancement
may ultimately prove to be minimal if the product or enhancement is quickly
superseded by other product or technology developments in the marketplace. OSI's
future success will depend upon the widespread adoption of client/server
application software in the banking and credit union industry, as well as OSI's
ability to enhance its current products and to develop and introduce new
products that keep pace with technological developments, emerging industry
standards and competitors' offerings and to address the increasingly
sophisticated needs of its customers. There can be no assurance that OSI will be
successful in developing and marketing new products or product enhancements that
meet these changing demands, that OSI will not experience difficulties that
could delay or prevent the successful development, introduction and marketing of
these products or that its new products and product enhancements will adequately
meet the demands of the marketplace and achieve market acceptance.

           Delays in the release of new and upgraded versions of OSI's software
products (or in third party products incorporated in the OSI System,
particularly the Oracle relational database management system) could have a
material adverse effect on OSI's revenues and results of operations. Because of
the complexities inherent in developing software products as sophisticated as
those sold by OSI and the lengthy testing periods associated with such products,
no assurance can be given that future product introductions by OSI will not be
delayed. In addition, complex software programs may contain undetected errors or
bugs when they are first introduced or as new versions are released. There can
be no assurance that errors will not be found in OSI's existing or future
products or in third-party products upon which OSI's products are dependent,
such as the Oracle relational database and Microsoft Windows NT, with the
possible result of delays in, or loss of, market acceptance of OSI's products,
diversion of OSI's resources, injury to OSI's reputation and increased service,
warranty expenses and/or payment of damages.

           COMPETITION. The market for OSI's products and services is intensely
competitive and subject to rapid technological change. Competitors vary in size
and in the scope and breadth of the products and services they offer. OSI
encounters competition from a number of sources, all of which offer core
software systems to the banking and credit union industry. OSI expects
additional competition from other established and emerging companies as the
client/server application software market continues to develop and expand. OSI
also expects that competition will increase as a result of software industry
consolidation, including particularly the acquisition of any of its competitors.
OSI encounters competition in the United States from a number of sources,
including Fiserv, Inc., NCR Corporation, Electronic Data Systems Corporation,
Marshall & Ilsley Corporation, M&I EastPoint, Phoenix International Ltd., Inc.,
Jack Henry & Associates, Inc., ALLTEL Corporation, Prologic Corporation and
Kirchman Corporation, all of which offer core processing systems or outsourcing
alternatives to banks and credit unions. OSI also competes against a number of
smaller, regional competitors. In addition to these competitors, OSI competes
internationally with Misys plc Banking Division (including Midas-Kapiti
International, Inc., Kindle Banking Systems and ACT Financial Systems), Sanchez
Computer Associates, Inc. and Financial Network Services, among others. Some of
OSI's current, and many of OSI's potential, competitors have longer operating
histories, greater name recognition, larger customer bases and significantly
greater financial, engineering, technical, marketing and other resources than
OSI. As a result, they may be able to respond more quickly to new or emerging
technologies and changes in customer demands or to devote greater resources to
the development, promotion and sale of their products than OSI. In addition,
current and potential competitors have established or may establish cooperative
relationships among themselves or with third parties to increase the ability of
their products to address the needs of OSI's prospective customers. Accordingly,
it is possible that new competitors or alliances 



                                       26
<PAGE>   36

among competitors may emerge and rapidly acquire significant market share. OSI
expects that the banking and credit union software market will continue to
attract new competitors and new technologies, possibly involving alternative
technologies that are more sophisticated and cost effective than OSI's
technology. There can be no assurance that OSI will be able to compete
successfully against current or future competitors or that competitive pressures
faced by OSI will not materially adversely affect its business, financial
condition and results of operations.

   
           RISKS ASSOCIATED WITH MANAGING GROWTH. OSI is currently experiencing
a period of rapid growth which has placed, and could continue to place, a strain
on its management and other resources. OSI's business has grown in size and
complexity over the past three years. Total revenues increased from $268,141 for
the year ended December 31, 1995 to $6.6 million for the year ended December 31,
1997 and to $9.5 million for the nine months ended September 30, 1998. In 
addition, the number of OSI's employees increased from 26 as of December 31, 
1995 to 143 as of September 30, 1998, and OSI expects to hire additional 
personnel during the remainder of 1998 and 1999. OSI's need to manage its growth
effectively will require it to continue to implement and improve its 
operational, financial and other internal systems on a timely basis, and to 
attract, train, motivate, manage and retain its employees. If OSI's management 
is unable to manage growth effectively or new employees are unable to achieve 
anticipated performance levels, OSI's business, financial condition and results 
of operations could be materially adversely affected.

           RELIANCE ON NEW CUSTOMERS. OSI historically has relied upon and
expects to continue to rely upon software license fees from new customers for a
substantial portion of its revenues. Most such licenses involve large dollar
amounts (typically ranging from $250,000 to $750,000), and the sales cycles for
these transactions are often lengthy and unpredictable. Any inability of OSI to
license and deliver the OSI System to a significant number of new customers
could have a material adverse effect on OSI's business, financial condition and
results of operations.
    

           EXPANSION OF CREDIT UNION CUSTOMER BASE. OSI's software for credit
unions, The Complete Credit Union Solution, has been installed to date at only
one credit union. There can be no assurance that The Complete Credit Union
Solution will be installed at additional credit unions or that it will achieve
meaningful acceptance by credit union customers. Any failure of OSI to
successfully penetrate the credit union industry could have a material adverse
effect on OSI's business, financial condition and results of operations.

   
           DEPENDENCE ON THE BANKING AND CREDIT UNION INDUSTRY. Substantially
all of OSI's revenues are derived from customers in the banking and credit union
industry, primarily small to mid-size banks, and OSI expects it will continue to
derive substantially all of its revenues from such customers for the foreseeable
future. Unfavorable economic conditions adversely impacting the banking and
credit union industry could therefore have a material adverse effect on OSI's
business, financial condition and results of operations. For example, the
banking and credit union industry has experienced and may continue to experience
cyclical fluctuations in profitability, which may affect the willingness or
ability of participants in this industry to fund projects such as those for
which OSI may be engaged.
    

           RISKS OF CONSOLIDATION. Merger and acquisition activity among
financial institutions, particularly large banks, has been widespread in recent
years and is expected to continue in future years. As a result, industry
consolidation could have the effect of reducing the number of OSI's current and
potential customers. Any significant increase in the level of such consolidation
among small to mid-size banks and credit unions could adversely affect OSI's
business, financial condition and results of operations.

           LENGTHY AND UNPREDICTABLE SALES CYCLE. OSI's software is used for
business-critical purposes, and its implementation involves significant capital
commitments by customers. Potential customers generally commit significant
resources to an evaluation of available software and require OSI to expend
substantial time, effort and money educating them as to the value and operation
of OSI's software. Sales of OSI's software products require an extensive
education and marketing effort throughout a customer's organization because
decisions to license such software generally involve the evaluation of the
software by a significant number of customer personnel in various functional
areas, each having specific and often conflicting requirements. A variety of
factors, including factors over which OSI has little or no control, may cause
potential customers to favor a competing vendor or to delay or forego a
purchase. In addition, the sales cycles associated with these transactions are
subject to a number of uncertainties, including customers' budgetary
constraints, the timing of the expiration of customers' current system license
agreements or outsourced core processing agreements, the timing of customers'
budget cycles and approval processes and customers' willingness to implement a
client/server operating environment. As a result of these or other factors, the
sales cycle for OSI's products is long, typically ranging between six to nine
months. Due to the length of the sales cycle for its software products, OSI's 
ability to forecast the



                                       27
<PAGE>   37
timing and amount of its sales is limited, and the delay or failure to complete
one or more large license transactions could have a material adverse effect on
OSI's business, financial condition and results of operations.

           RELIANCE ON AND EXPANSION OF SALES FORCE AND THIRD-PARTY OUTSOURCING
AGREEMENTS. OSI relies primarily on its direct sales force for sales of the OSI
System. OSI will be required to hire additional sales, customer service and
implementation personnel in 1998 and beyond if OSI is to achieve revenue growth
in the future. Competition for such personnel is intense, and there can be no
assurance that OSI will be able to retain its existing sales, customer service
and implementation personnel or will be able to attract, assimilate or retain
such additional highly qualified personnel in the future. If OSI is unable to
hire such personnel on a timely basis, its business, financial condition and
results of operations could be materially adversely affected.

           OSI has entered into exclusive license and marketing arrangements
with two providers of outsourcing services to financial institutions, BISYS,
Inc. ("BISYS"), a subsidiary of The BISYS Group, Inc. ("BISYS Group"), and
Connecticut On-Line Computer Center, Inc. ("COCC"). Accordingly, OSI's success
depends in part on the ultimate success of these license and marketing
arrangements, including the effort and resources expended by such providers to
market outsourcing services using the OSI System.

           RISKS ASSOCIATED WITH RECRUITING AND RETAINING QUALIFIED PERSONNEL.
OSI's future success depends to a significant extent on OSI's executive officers
and key employees, including OSI's sales force and software professionals,
particularly project managers, software engineers and other senior technical
personnel. The loss of the services of any of these individuals or group of
individuals could have a material adverse effect on OSI's business, financial
condition and results of operations. OSI does not maintain any key person life
insurance for any of its executive officers or key employees. Competition for
qualified personnel in the software industry is intense and OSI competes for
such personnel with other software companies that have greater financial and
other resources. The future success of OSI will depend in large part on its
ability to attract, retain and motivate highly qualified personnel, and there
can be no assurance that OSI will be able to do so. OSI has from time to time
experienced, and may in the future experience, difficulty in locating and
retaining candidates with appropriate qualifications, particularly project
managers, software engineers and other senior technical personnel. Any
difficulty in hiring needed personnel possessing requisite skills could have a
material adverse effect on OSI's business, financial condition and results of
operations.

           DEPENDENCE ON THIRD-PARTY TECHNOLOGY. OSI's proprietary software is
currently designed, and may in the future be designed, to work on or in
conjunction with certain third-party hardware and/or software products,
including the Microsoft Windows NT operating system and an Oracle relational
database. Although OSI believes that there are alternatives for these products,
any significant interruption in the supply of such third-party hardware and/or
software could have a material adverse effect on OSI's sales unless and until
OSI can replace the functionality provided by these products with products of
comparable quality that will be accepted by OSI's customers. In addition, OSI is
to a certain extent dependent upon such third-parties' abilities to enhance
their current products, to develop new products on a timely and cost-effective
basis and to respond to emerging industry standards and other technological
changes, and OSI must be able to continually maintain its products'
compatibility with such third party products. There can be no assurance that OSI
would be able to replace the functionality provided by the third-party hardware
and/or software currently offered in conjunction with OSI's products in the
event that such hardware and/or software becomes obsolete or incompatible with
future versions of OSI's products or is otherwise not adequately maintained or
updated. The absence of, or any significant delay in the replacement of, that
functionality could have a material adverse effect on OSI's business, financial
condition and results of operations.

   
           CONCENTRATION OF CUSTOMERS. Historically, a limited number of
customers have accounted for a significant percentage of OSI's revenues in each
year. For the year ended December 31, 1997, The Savings Bank of Manchester and
the Savings Bank of Utica accounted for 17% and 15% of OSI's total revenues,
respectively. For the year ended December 31, 1996, American Federal Bank,
Gloversville Federal Savings and Loan Association, Dean Cooperative Bank and
Signet Bank accounted for 38%, 22%, 20% and 14% of OSI's total revenues,
respectively. Although OSI expects that its reliance on any particular customer
will decline as its customer base expands, the failure of OSI to enter into a
sufficient number of licensing agreements during a particular period could have
a material adverse effect on OSI's business, financial condition and results of
operations.
    

           YEAR 2000 COMPLIANCE. A portion of the growth in OSI's revenues in
1997 and the first half of 1998 resulted from OSI's ability to provide banking
applications that resolve the Year 2000 problem. As the overall demand for Year
2000 solutions declines, there can be no assurance that the demand for OSI's
products and services will not be materially adversely affected. In addition,
purchasing patterns of potential customers may be affected by Year 2000 issues
as


                                       28
<PAGE>   38

financial institutions divert financial and human resources to correct or modify
their current core data processing systems to meet federal and state mandates
for Year 2000 readiness.

           Although OSI believes the OSI System complies with Year 2000
requirements, there can be no assurance that customers will not encounter
difficulties with the OSI System arising from Year 2000 issues. In addition,
there can be no assurance that Year 2000 issues will not adversely affect
third-party network or application software that is integrated with the OSI
System.

           OSI is assessing its major internal management systems for Year 2000
readiness. This assessment includes identification of all critical information
management systems, testing Year 2000 readiness of such systems and making
corrective fixes to non-compliant systems. OSI's plan also includes obtaining
compliance verification from third party vendors supplying critical software and
information systems to OSI, and communication with significant suppliers to
determine their plans to address their own Year 2000 issues. OSI has not
completed its assessment, but intends to take any corrective action necessary as
a result of such review. All costs associated with OSI's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
internal Year 2000 issues has not been, and is not expected to be, material to
OSI's business, financial condition or results of operations. OSI expects to
complete its Year 2000 assessment by June 30, 1999. Nevertheless, OSI may not
timely identify and remediate all significant Year 2000 problems and remedial
efforts may involve significant time and expense. There can be no assurance that
any Year 2000 compliance problems of OSI or its customers or suppliers will not
have a material adverse effect on OSI's business, financial condition or results
of operations.

           POTENTIAL FOR CONTRACT LIABILITY. Failures in a customer's system
could result in an increase in service and warranty costs or a claim for
substantial damages against OSI. There can be no assurance that the limitations
of liability set forth in OSI's contracts would be enforceable or would
otherwise protect OSI from liability for damages. OSI maintains general
liability insurance coverage, including coverage for errors and omissions in
excess of the applicable deductible amount. There can be no assurance that such
coverage will continue to be available on acceptable terms or at all or will be
available in sufficient amounts to cover one or more large claims, or that the
insurer will not deny coverage as to any future claim. The successful assertion
of one or more large claims against OSI that exceeds available insurance
coverage, or the occurrence of changes in OSI's insurance policies, including
premium increases or the imposition of large deductible or co-insurance
requirements, could have a material adverse effect on OSI's business, financial
condition and results of operations. Furthermore, litigation, regardless of its
outcome, could result in substantial cost to OSI and would divert management's
attention from OSI's operations. Any contract liability claim or litigation
against OSI could, therefore, have a material adverse effect on its business,
financial condition and results of operations. Because many of OSI's projects
are business-critical projects for financial institutions, a failure or
inability to meet a customer's expectations could result in a large damage claim
and could seriously damage OSI's reputation and affect its ability to attract
new business.

           RISKS ASSOCIATED WITH CHANGING REGULATORY ENVIRONMENT. While OSI's
operations are not directly regulated by banking authorities, OSI's existing and
potential customers are subject to extensive federal, state and foreign
governmental regulations. Such regulations may adversely affect the banking and
credit union industry, limit the number of potential customers for OSI's
products and services or otherwise have a material adverse effect on OSI's
business, financial condition and results of operations. In addition,
governmental regulation in the financial services industry is evolving,
particularly with respect to banking technology. There can be no assurance that
future changes in such laws or regulations or in their interpretation will not
adversely affect the business of OSI or require OSI's products to conform to
such laws or regulations.

           PROTECTION OF INTELLECTUAL PROPERTY; INFRINGEMENT OF PROPRIETARY
RIGHTS. OSI relies on a combination of copyright, trademark and trade secret
laws, nondisclosure agreements and other contractual provisions and technical
measures to protect its intellectual property rights. There can be no assurance
that these protections will be adequate to prevent OSI's competitors from
copying or reverse-engineering OSI's products, or that OSI's competitors will
not independently develop technologies that are substantially equivalent or
superior to OSI's technology. OSI does not include in its products any mechanism
to prevent unauthorized copying and any such unauthorized copying could have a
material adverse effect on OSI's business, financial condition and results of
operations. OSI has no patents, and existing copyright laws afford only limited
protection for OSI's intellectual property rights and will not protect such
rights in the event competitors independently develop products similar to those
of OSI. In addition, the laws of certain countries in which OSI's products are
or may be licensed do not protect OSI's products and intellectual property
rights to the same extent as the laws of the United States.



                                       29
<PAGE>   39

           Although OSI has never been the subject of a material intellectual
property dispute, there can be no assurance that a third party will not assert
that OSI's technology violates its intellectual property rights in the future.
As the number of software products in OSI's target market increases and the
functionality of these products further overlap, OSI believes that software
developers may increasingly become subject to infringement claims. Any such
claims, whether with or without merit, can be time consuming and expensive to
defend. There can be no assurance that third parties will not assert
infringement claims against OSI in the future with respect to its current or
future products or that any such assertion will not require OSI to enter into
royalty arrangements (if available) or litigation that could be costly to OSI.


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<PAGE>   40


                             THE OSI SPECIAL MEETING

DATE, TIME, PLACE AND PURPOSE

           The Special Meeting will be held at the offices of Hale and Dorr LLP,
60 State Street, 26th Floor, Boston, Massachusetts 02109 on __________________,
1998 at _________ ___.m., local time. At the Special Meeting, stockholders of
OSI will be asked to approve and adopt the Merger Agreement and the transactions
contemplated thereby and to approve the Merger. The Merger Agreement is attached
hereto as Appendix A. See "Terms of the Merger."

RECORD DATE AND OUTSTANDING SHARES

   
           Holders of record of OSI Common Stock and OSI Preferred Stock at the
close of business on ___________, 1998 (the "Record Date") are entitled to
notice of and to vote at the Special Meeting. As of the close of business on the
Record Date, there were 2,236,103 shares of OSI Common Stock, 1,000,000 shares
of OSI Series A-1 Preferred Stock, 583,333 shares of OSI Series A-2 Preferred
Stock, 1,627,917 shares of OSI Series B Preferred Stock, 1,263,889 shares of OSI
Series C Preferred Stock and 833,333 shares of OSI Series D Preferred Stock,
outstanding and entitled to vote, held of record by a total of 38 stockholders.
Each holder of OSI Common Stock is entitled to one vote for each share of OSI
Common Stock held as of the Record Date and each holder of OSI Preferred Stock
is entitled to the number of votes equal to the number of shares of OSI Common
Stock issuable upon a conversion of such OSI Preferred Stock held as of the
Record Date.
    

VOTING OF PROXIES

           The proxy accompanying this Proxy Statement/Prospectus is solicited
on behalf of the OSI Board for use at the Special Meeting. OSI stockholders are
requested to complete, date and sign the accompanying proxy and promptly return
it in the enclosed envelope or otherwise mail it to OSI. All properly executed
proxies received by OSI prior to the vote at the Special Meeting that are not
properly revoked will be voted at the Special Meeting in accordance with the
instructions indicated on the proxies or, if no direction is indicated on the
proxy, will be voted in favor of approving and adopting the Merger Agreement and
the Merger. An OSI stockholder who has given a proxy may revoke it at any time
before it is exercised at the Special Meeting by: (i) delivering to the
Secretary of OSI (by any means, including facsimile) a written notice, prior to
the vote at the Special Meeting bearing a date later than the date of the proxy,
stating that the proxy is revoked; (ii) signing and delivering to the Secretary
of OSI a proxy relating to the same shares and bearing a later date prior to the
vote at the Special Meeting; or (iii) attending the Special Meeting and voting
in person (although attendance at the Special Meeting will not, by itself,
revoke a proxy).

           It is not anticipated that any matter not referred to in this Proxy
Statement/Prospectus will be presented for action at the Special Meeting.
However, if any other matters are properly brought before the Special Meeting,
the persons named in the proxies will have discretion to vote on such matters in
accordance with their best judgment.

VOTE REQUIRED; QUORUM

           Approval and adoption of the Merger Agreement and the Merger by OSI's
stockholders requires the affirmative vote of the holders of a majority of the
outstanding shares of OSI Common Stock and the affirmative vote of the holders
of a majority of the outstanding shares of OSI Preferred Stock, including a
majority of the outstanding shares of OSI Series B Preferred Stock and a
majority of the outstanding shares of OSI Series C Preferred Stock. Abstentions
will thus have the effect of a vote against the Merger Agreement and the Merger.
The required quorum for the transaction of business at the Special Meeting is a
majority of the shares of OSI Common Stock and OSI Preferred Stock outstanding
on the Record Date. Abstentions will be considered present at the Special
Meeting for the purpose of determining whether a quorum of OSI's stockholders
are present.

   
           Certain stockholders who are or may be affiliates of OSI,
beneficially owning 875,000 shares of OSI Common Stock and 4,747,361 shares
of OSI Preferred Stock, or approximately 39.1% and 89.4% of the
outstanding shares of OSI Common Stock and OSI Preferred Stock, respectively,
have executed voting agreements pursuant to which they have agreed to vote such
OSI shares in favor of the adoption and approval of the Merger Agreement and
approval of the Merger.
    



                                       31
<PAGE>   41

           On the Record Date, directors and executive officers of OSI, and
their affiliated entities, as a group beneficially owned ____ shares of OSI
Common Stock and _____ shares of OSI Preferred Stock, or approximately ____% and
____% of the outstanding shares of OSI Common Stock and OSI Preferred Stock,
respectively on such date.

SOLICITATION OF PROXIES AND EXPENSES

   
           OSI will bear the cost of the solicitation of proxies from its
stockholders. In addition to solicitation by mail, the directors, officers and
employees of OSI may solicit proxies from stockholders by telephone, facsimile,
telegram, letter or in person.
    

APPRAISAL RIGHTS

   
           If the Merger is approved by the required vote of OSI stockholders
and is not abandoned or terminated, each holder of OSI Common Stock and OSI
Preferred Stock who does not vote in favor of the Merger and also complies with
the procedures set forth in Section 262 of the DGCL, a copy
of which is attached hereto as Appendix B, will be entitled to be paid the fair
value of his, her or its shares pursuant to Section 262 of the DGCL. See
"Approval of the Merger-- Appraisal Rights."
    

   
RECOMMENDATION OF THE OSI BOARD
    

           The OSI Board, by unanimous vote, has adopted and approved the Merger
Agreement and the transactions contemplated thereby, and has determined that the
Merger is in the best interests of OSI and its stockholders and approved the
Merger. After careful consideration, the OSI Board unanimously recommends a vote
FOR adoption and approval of the Merger Agreement and the Merger.



                                       32
<PAGE>   42


                             APPROVAL OF THE MERGER
   
           This section contains forward-looking statements that involve risks
and uncertainties. Words such as "expects," "anticipates," "intends," "plans,"
"believes," "seeks," "estimates" and similar expressions or variations of such
words are intended to identify these forward-looking statements, but are not the
exclusive means of identifying forward-looking statements in this section. The
forward-looking statements reflect the good faith judgment of the management of
HNC and OSI based on factors currently known and are subject to risks and
uncertainties. Actual results could differ materially from those anticipated in
the forward-looking statements as a result of certain factors, including those
set forth in "Risk Factors" and elsewhere in this Proxy Statement/Prospectus.
See "Forward-Looking Statements."
    

HNC'S REASONS FOR THE MERGER

           The HNC Board believes that the following are among the primary
reasons for HNC to complete the proposed Merger with OSI:

           -    OSI provides fully integrated suites of banking and credit union
                applications software that support an institution's broad range
                of core processing requirements, including deposits and loans,
                teller functions, home/Internet banking and platform automation.
                OSI's target customers are small to mid-size banks and credit
                unions, whereas most of HNC's customers for its financial
                solutions products have historically been larger financial
                institutions. HNC expects that acquiring OSI will enable HNC to
                diversify its market focus to include small to mid-size banks
                and credit unions. HNC believes this market segment to be a
                strategic one that will give HNC the opportunity to increase its
                market share and presence by leveraging its product line over a
                larger number of customers. HNC believes that its existing
                intelligent decision products (many of which are designed to
                serve the needs of banks or similar financial institutions) are
                well positioned to serve OSI's current customer base.

           -    By acquiring OSI, HNC will acquire the ability to market an
                integrated range of core products to banks and credit unions,
                with the strategy of providing these customers a single source
                for all their core applications software needs. HNC believes
                that marketing an integrated suite of products will enable it to
                compete more effectively with larger software vendors who market
                integrated solutions suites and should also eventually enable
                HNC to more effectively sell its existing predictive software
                solutions as valuable add-ons to OSI's customers' existing
                software suites.

   
           -    HNC's FTI subsidiary develops and markets general ledger,
                profitability measurement and decision support software products
                and related support services to the financial services industry.
                HNC believes that OSI's products are complementary to those of
                FTI. OSI and FTI currently have a joint marketing arrangement
                whereby OSI recommends FTI products to its customers and
                receives a referral fee from FTI. HNC anticipates that the
                Merger will provide the opportunity for HNC to create an
                integrated infrastructure solution that emphasizes predictive
                customer relationship management by combining FTI's core
                products (as well as other HNC financial solutions products) 
                with the OSI System.
    
           -    Because FTI and OSI address the same financial institution
                market with complementary, but not functionally overlapping
                products, it is expected that the Merger will provide FTI and
                OSI with the ability to integrate their sales and marketing
                activities and consulting services. HNC also believes that the
                Merger will provide FTI and OSI with advantageous cross-selling
                opportunities.

           -    HNC believes that the Merger will afford it the opportunity
                (subject to permission from appropriate parties) to obtain
                additional consumer financial data, primarily from the small to
                mid-size financial services companies that use OSI's products.
                HNC expects to be able to use this data to develop new
                predictive models and to create or enhance products for all of
                its target markets, including products developed for large banks
                and non-banking markets. HNC also believes that OSI's products,
                while currently targeted to small to mid-size banks and credit
                unions, are scalable and thus could eventually be marketed to
                larger financial customers.

           -    HNC believes that the Merger will result in business synergies,
                including the elimination or sharing of certain administrative
                and operational expenses. However, HNC believes that cost
                savings arising from the business synergies immediately
                following the Merger will be less significant than anticipated
                long-term economies of scale.



                                       33
<PAGE>   43

   
           In the course of its deliberations, the HNC Board reviewed with HNC's
management a number of factors relevant to the Merger in addition to the
benefits outlined above. The HNC Board considered, among other things: (i) the
terms of the Merger; (ii) information concerning HNC's and OSI's respective
businesses, prospects, financial positions, results of operations, products,
product development and technologies, based in the case of OSI on information
provided by OSI and on HNC management's due diligence investigation; (iii)
information regarding other companies in the banking applications software
industry, including market prices of those companies' stock, market
capitalizations, earnings per share, price to earnings ratios, revenues and
other results of operations, based on reported historical information and
analysts' reports and earnings estimates; (iv) information regarding reported
acquisitions of other companies in the application development software industry
and other comparable acquisitions; (v) an analysis of the relative value that
OSI might contribute to the future business and prospects of HNC; (vi) current
financial market conditions and historical market prices, volatility and trading
information with respect to HNC Common Stock; (vii) the compatibility of HNC's
and OSI's businesses, products, technologies, management and administrative,
sales and marketing and technical organizations; (viii) the expectation that the
Merger will qualify for pooling of interests treatment for financial reporting
purposes; and (ix) the expectation that the Merger will be a reorganization for
federal income tax purposes.
    

           The HNC Board also considered a variety of potentially negative
factors concerning the Merger, including: (i) the risk that, despite the
intentions and efforts of the parties, the benefits sought to be achieved in the
Merger might not be achieved, or that integration of the technologies, products,
organizations or other operations of the two companies might not be accomplished
smoothly and might require more time, expense and management attention than
anticipated; (ii) the potential disruption of HNC's business that might result
from employee uncertainty or lack of focus, as well as customer and supplier
confusion, following announcement of the Merger; (iii) the need and expense
associated with adapting certain HNC products for use with OSI's product line;
(iv) risks associated with addressing OSI's customer base, which represents a
new market segment for HNC; (v) the difficulties inherent in integrating a new
business, particularly when the business, as in OSI's case, is geographically
distant from HNC's headquarters; (vi) the uncertainty of the market's acceptance
of HNC's combined product offerings following the Merger; (vii) the estimated
charge of $4.5 million to be incurred due to the Merger, primarily in the
quarter in which the Merger is effective; (viii) the possibility that the
operational efficiencies and other benefits anticipated from the Merger might
not be achieved or might not occur as rapidly or to the extent currently
anticipated and that OSI's operations might have a dilutive effect on HNC's net
earnings for longer periods than anticipated; (ix) the risk that, despite the
efforts of OSI and HNC, OSI might not be able to retain its key technical,
management and sales personnel; (x) the risk that HNC's ability to increase or
maintain revenues might be diminished by intensified competition; (xi) the risk
that the public market price of HNC Common Stock might be adversely affected by
announcement of the Merger; (xii) the risk that the Merger would not be
effected, and the disruption in the business of HNC if the Merger is abandoned;
and (xiii) the other risks described above in "Risk Factors." The HNC Board
believed that these risks were outweighed by the potential benefits of the
Merger.

           In view of the wide variety of factors, both positive and negative,
considered by the HNC Board, the HNC Board did not find it practical to, and did
not, quantify or otherwise assign relative weights to the specific factors
considered.


OSI'S REASONS FOR THE MERGER

           The OSI Board, in voting to approve the Merger Agreement and the
Merger, identified a number of potential benefits from the proposed Merger.
There can be no assurance that any of these potential benefits will be realized.
The potential benefits include:

           -    An enhanced ability of OSI to market and sell mission-critical,
                core processing banking systems to potential customers. This
                will be due in part to the greater financial resources made
                available by the combined companies, greater access to the
                financial institutions market, and the increased credibility of
                being a subsidiary of a publicly traded company.

           -    The potential to add functionality to the OSI System based on
                HNC's predictive software solutions that would uniquely leverage
                the OSI System's real time processing capability and
                significantly differentiate the OSI System from other
                competitive core processing products. Such predictive software
                solutions include applications used to detect fraudulent credit
                card and bank check transactions and to forecast customer
                profitability.

           -    The ability to leverage HNC's distribution channels to augment
                OSI's current marketing and sales activities, both in the United
                States and abroad.

                                       34
<PAGE>   44

   
           -    Opportunities to leverage research and development capabilities
                by sharing technology and coordinating product development 
                efforts.

           -    The ability to cross-sell various of HNC's banking products to
                OSI's installed customer base.
    
           -    The complementary, and not functionally redundant, nature of
                OSI's technologies and products to those of HNC.

           -    Increased liquidity for OSI's stockholders with respect to their
                investment in OSI.

   
           In making its decision to approve the Merger Agreement, the Merger
and the other transactions contemplated thereby, and its determination that the
Merger is in the best interests of OSI and its stockholders, the OSI Board
consulted with its financial advisors regarding the financial aspects of
the proposed transaction and with its legal advisors regarding the legal terms 
of the transaction and the OSI Board's obligations in its consideration of the 
proposed transaction, as well as with management of OSI. Without assigning
any relative or specific weights, the OSI Board considered a number of factors,
both from a short term and long term perspective, including, without limitation,
the following: (i) information concerning the financial performance, condition,
business operations and prospects of each of HNC and OSI, including, without
limitation, the long term growth potential of HNC and the business risks
associated therewith; (ii) the financial strength, global market presence and
greater resources of the combined company and its consequent enhanced ability to
realize the potential of the business contributed by OSI; (iii) the current
financial market conditions and historical market prices, volatility and trading
information with respect to HNC Common Stock; (iv) financial and market
information regarding other companies in OSI's industry; (v) the current and
prospective environment in which OSI operates, including, without limitation,
general economic conditions and the competitive market for OSI's products; (vi)
that the product lines of the two companies are primarily complementary and not
functionally redundant; (vii) HNC's experience integrating several recent
acquired businesses; (viii) HNC's operating philosophy to permit subsidiaries to
operate in a relatively autonomous manner; (ix) difficulties in financial
markets experienced recently by publicly-traded small--cap technology companies;
(x) the financial and other significant terms of the proposed Merger, including,
without limitation, the terms and conditions of the Merger Agreement and the
related agreements; and (xi) the fact that, under the DGCL, the OSI stockholders
who do not wish to participate in the Merger may dissent therefrom and receive
the "fair value" of their shares.
    

           The OSI Board also considered negative factors relating to the
Merger, including, without limitation: (i) the risks that the benefits sought in
the Merger would not be fully achieved; (ii) the risk that the Merger would not
be consummated; (iii) the effect of the announcement of the Merger on OSI's
ability to attract and retain key management, sales and technical personnel;
(iv) the possibility that following the announcement of the transaction, some
customers may defer orders or purchasing decisions pending completion of the
Merger or seek to terminate their relations with the combined company; and (v)
the risks associated with the business of HNC and the combined company after the
Merger. See "Risk Factors."

           The foregoing discussion of the information and factors considered by
the OSI Board is not intended to be exhaustive, but is believed to include the
material factors the OSI Board considered. In addition, in reaching its
determination to approve and recommend the Merger, given the wide variety of
factors considered in connection with its evaluation of the proposed Merger, the
OSI Board did not find it practical to, and did not, quantify or otherwise
attempt to assign any relative or specific weights to the foregoing factors, and
individual directors may not concur on which factors should have been given
greater weight.

           If the stockholders of OSI do not approve and adopt the Merger
Agreement, or if the Merger is not consummated for any other reason, the OSI
Board currently expects to continue to operate OSI as an ongoing business.

AFTER CAREFUL CONSIDERATION, THE OSI BOARD UNANIMOUSLY RECOMMENDS A VOTE FOR THE
ADOPTION AND APPROVAL OF THE MERGER AGREEMENT AND FOR APPROVAL OF THE MERGER.



                                       35
<PAGE>   45


BACKGROUND OF THE MERGER

           HNC's growth strategy includes the ongoing evaluation of acquisitions
of businesses, products and technologies as a means to expand its product
offerings for existing and new target markets. Among its recent acquisitions is
the acquisition in April 1998 of FTI, a company that develops and markets
profitability measurement and decision support software products and related
support services to the financial services industry. FTI's products are
compatible with and complementary to OSI's products. At approximately the same
time as HNC's acquisition of FTI, Douglas C. Carlisle, a director of OSI and
general partner of a former investor in HNC, brought OSI to the attention of
Robert L. North, President and Chief Executive Officer of HNC.

           Commencing in early 1996, OSI has from time to time had discussions
with companies in the software, systems integration and financial services
industries in an effort to explore the future of the industry and the role of
OSI and its products. In the course of such discussions, OSI has considered
possible alliances, combinations and transactions with various industry
participants.

           In early 1998, OSI also was considering an underwritten public
offering of its Common Stock to the public, and on May 7, 1998, held an
organizational meeting for the offering with its legal advisors, accountants and
investment bankers.

           In mid-April 1998, Douglas K. Anderson, OSI's Chairman of the Board
and Chief Executive Officer, received a telephone call from Drew Hyatt, HNC's
Executive Director, Corporate Business Strategy, expressing HNC's interest in
meeting with OSI's management to explore the possibility of a combination or
alliance.

           On May 14, 1998, Mr. North and Mr. Hyatt, and Mr. Anderson, John L.
Person, OSI's President and Chief Operating Officer and Richard J. Willemin,
OSI's Senior Vice President and Chief Financial Officer, met for the first time
at OSI's headquarters. HNC and OSI executed and delivered a Mutual
Confidentiality and Non-Disclosure Agreement pursuant to which the parties
agreed to maintain the confidentiality of materials provided by, as well as
their discussions with, each other. At that meeting they discussed their
respective companies in general terms. In addition, the representatives of OSI
indicated that OSI was contemplating a registered underwritten public offering
of OSI Common Stock in the summer of 1998. As a result of that meeting, HNC
management considered the possibility of further discussions with OSI regarding
a business combination of the two companies and contacted Credit Suisse First
Boston for advice in that regard.

           On May 20, 1998, at a regularly scheduled meeting of the HNC Board,
management of HNC made a presentation on a number of possible acquisitions,
including OSI. No specific transactions were approved, and HNC's management was
authorized to continue to investigate the opportunity presented by OSI.

           On June 10, 1998, OSI filed a registration statement for an initial
public offering of its capital stock to be underwritten by BT Alex. Brown and
Warburg Dillon Read LLC.

           On June 25, 1998, at a regularly scheduled meeting of the OSI Board,
Mr. Anderson advised the OSI Board that he and other members of senior
management had discussions with a third party that had expressed interest in a
business combination with OSI. Mr. Anderson was authorized to continue
discussions regarding a possible business combination while OSI continued to
prepare for the initial public offering.

           On July 1, 1998, Michael A. Thiemann, President of HNC's Financial
Solutions Group and Mr. Hyatt from HNC, Messrs. Anderson, Person, Willemin and
Michael D. Nicastro, OSI's Vice President of Marketing, and representatives of
Credit Suisse First Boston and BT Alex. Brown, OSI's financial advisor, met to
discuss the potential synergies between HNC's Financial Solutions business and
OSI's business and product line.

           On July 8, 1998, during a telephone conference call, representatives
of Credit Suisse First Boston discussed matters relative to financial due
diligence with Messrs. Anderson and Willemin and representatives of BT Alex.
Brown.

           On July 10, 1998, the HNC Board met telephonically to discuss a
proposal of HNC's management to acquire OSI and to determine whether further
discussions with OSI should be pursued. At that meeting, HNC management made a
presentation on OSI's business and status, strategic benefits and opportunities
that might arise from a combination with OSI, its potential synergies with HNC's
business and market factors indicating the desirability of offering an
integrated product suite. In addition, representatives of Credit Suisse First
Boston made a presentation on OSI and the proposed 



                                       36
<PAGE>   46

Merger, including OSI's operating history, its key business relationships, their
assessment of OSI's pending initial public offering and potential ranges of
valuations of OSI that might be applied to a business combination. The HNC Board
authorized management to continue discussions with OSI, subject to further HNC
Board approval of any definitive agreement.
   
           On July 15, 1998, HNC presented Mr. Anderson with a proposal for the
acquisition of OSI by HNC. HNC proposed that the transaction be a merger of OSI
with and into a subsidiary of HNC pursuant to which OSI stockholders would
receive shares of HNC Common Stock. On July 16, 1998, Mr. Thiemann of HNC met
with Douglas C. Carlisle, a director of OSI, to discuss a potential business
combination and the strategic benefits and opportunities of such a transaction.
Mr. Anderson later conferred individually with the members of the OSI Board and
was instructed not to pursue the proposed transaction, but rather to pursue an
independent strategy including an initial public offering. During the end of
July and early August, OSI continued to prepare for an underwritten initial
public offering of its Common Stock.
    
           On July 22, 1998, at a regularly scheduled meeting of the HNC Board,
HNC management reported that, after preliminary discussions with OSI, HNC had
received no further response from OSI's representatives. At that time, HNC
management and the HNC Board believed that any potential combination with OSI
would not take place because OSI was pursuing its initial public offering.

           On August 5, 1998, due to instability in the public equity markets
(particularly the market for initial public offerings for technology companies),
Mr. Anderson met with Messrs. North, Thiemann and Hyatt at HNC's headquarters to
determine whether HNC was still interested in discussing a potential
transaction.

           On August 13, 1998, HNC presented Mr. Anderson with a detailed
proposal for the acquisition of OSI pursuant to the same structure as its
earlier proposal, and after Mr. Anderson conferred individually with members of
the OSI Board, the parties reached an agreement in principle as to the general
structure of a transaction. The agreement also provided that in the event that
the transaction was not consummated, HNC, at OSI's request, would invest
$5,000,000 in OSI stock and would lend OSI $5,000,000.

           The HNC Board met on August 14 to discuss the proposed Merger. The
HNC Board approved the agreement in principle and authorized HNC management to
pursue further negotiations and due diligence investigation with OSI. Legal
counsel for HNC and OSI then commenced preparation and negotiation of definitive
documents, and HNC and its counsel, accountants and financial advisor conducted
business, legal, financial and technical due diligence and senior management of
HNC and OSI discussed future organizational, product and marketing plans as a
combined entity.

   
           Between August 18, 1998 and September 15, 1998, HNC, OSI and their
respective legal counsel, financial advisors and independent accountants had
numerous meetings and conversations regarding the terms of the Merger Agreement
and related documents, including without limitation the terms of the escrow and
indemnification agreements of the OSI stockholders after the Merger, the
representations, warranties, covenants and conditions to closing to be set forth
in the Merger Agreement, the availability of pooling of interests accounting
treatment for the proposed Merger, the qualification of the proposed Merger as a
tax-free reorganization pursuant to Section 368(a) of the Internal Revenue Code
of 1986, as amended (the "Code") and the ability of the parties to complete the
proposed Merger in compliance with applicable antitrust laws. Concurrently, HNC
continued its legal, business and financial due diligence reviews of OSI.
    

           On September 2, 1998, at a special meeting of the OSI Board, held via
teleconference, representatives of BT Alex. Brown and OSI's legal counsel
reviewed with the OSI Board the proposed transaction and the terms and structure
that were being negotiated, as well as the remaining unresolved transaction
issues. OSI's legal counsel reviewed the principal terms of the proposed Merger
Agreement and related documents and engaged in a discussion with OSI Board
members concerning the directors' fiduciary duties in considering a business
combination. BT Alex. Brown reviewed with the OSI Board certain financial
analyses relating to the proposed business combination. Representatives of BT
Alex. Brown and OSI's legal counsel answered numerous questions from the OSI
Board concerning the proposed transaction.

           At special meetings of the OSI Board, held via teleconference, on
September 4, September 7, September 9 and September 11, Mr. Anderson reviewed
the course of negotiations and OSI's legal counsel summarized the current status
of the Merger Agreement and related documents.



                                       37
<PAGE>   47

           On September 8, 1998, at a special meeting of the HNC Board,
management reported on the status of the Merger negotiations. Representatives of
Credit Suisse First Boston reported on their due diligence review of OSI's
customers and also provided updated information regarding Credit Suisse First
Boston's valuation analysis of OSI and the preliminary pro forma impact of the
proposed Merger. Legal counsel to HNC also summarized for the HNC Board the
principal terms of the transaction as they had been negotiated to date.

           On September 13, 1998, at a special meeting of the OSI Board, held
via teleconference, Mr. Anderson and Mr. Willemin reported on the status of the
negotiations with HNC and representatives of BT Alex. Brown and OSI's legal
counsel reviewed the status of the remaining issues that had been negotiated.
After discussion of these matters, the OSI Board unanimously approved the Merger
and the Merger Agreement, subject to satisfactory resolution of the remaining
issues.

   
           On September 14, 1998, at a special meeting of the HNC Board, HNC
management reported on the status of the negotiations with OSI and counsel to
HNC reported on material transaction points. The HNC Board then authorized
management to sign the Merger Agreement provided that the Merger Agreement was
executed by all parties thereto on September 14, 1998, and directed management
to call another meeting of the HNC Board on September 15 to further discuss the
matter prior to final authorization if the Merger Agreement were not executed by
all parties thereto on September 14. The Merger Agreement was not signed on
September 14, 1998. Accordingly, a special meeting of the HNC Board was held on
September 15, 1998. At the meeting, the HNC Board unanimously approved the
Merger and the Merger Agreement, provided that the maximum number of shares of
HNC Common Stock issued in the proposed Merger and/or issuable upon the exercise
of options to purchase HNC Common Stock that are assumed in the Merger did not
exceed a total of 3,000,000 shares of HNC Common Stock.
    

   
           On September 16, 1998, the parties agreed to the maximum number of
shares of HNC Common Stock issuable in the proposed Merger, including the shares
of HNC Common Stock issuable upon the exercise of options assumed in the Merger.
After final approvals by the HNC Board and the OSI Board of the Merger Agreement
and the transactions contemplated by the Merger Agreement, the Merger Agreement
was signed by the parties and HNC and OSI issued a joint press release
announcing the Merger.
    

   
MATERIAL FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER

           The following discussion summarizes the material federal income tax
considerations of the Merger that are generally applicable to holders of OSI
Common Stock and OSI Preferred Stock. This discussion reflects the opinions of
Hale and Dorr LLP and Fenwick & West LLP attached as Exhibits 8.01 and 8.02 to
the Registration Statement of which this Proxy Statement/Prospectus is a part
(the "Exhibit Opinions"). The Exhibit Opinions each include an opinion to the
effect that the Merger will constitute a "reorganization" (a "Reorganization")
within the meaning of Section 368(a) of the Code. The Exhibit Opinions are based
on certain assumptions and subject to certain limitations and qualifications as
noted in the opinions. This discussion does not address all income tax
considerations that may be relevant to particular OSI stockholders in light of
their particular circumstances, such as stockholders who are dealers in
securities, stockholders who are foreign persons, stockholders who acquired
their shares in connection with previous mergers involving OSI or an affiliate
of OSI, stockholders who acquired their shares in connection with stock option
or stock purchase plans or in other compensatory transactions, or stockholders
who exercise their appraisal rights. In addition, the following discussion does
not address the tax consequences of transactions effectuated prior to or after
the Merger (whether or not such transactions are in connection with the Merger),
including without limitation transactions in which shares of OSI Common Stock or
OSI Preferred Stock were or are acquired or shares of HNC Common Stock were or
are disposed of. Furthermore, no foreign, state or local tax considerations are
addressed herein. ACCORDINGLY, OSI STOCKHOLDERS ARE URGED TO CONSULT THEIR OWN
TAX ADVISORS AS TO THE SPECIFIC TAX CONSEQUENCES OF THE MERGER, INCLUDING THE
APPLICABLE FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES OF THE MERGER TO
THEM.
    

           The following discussion is based on the interpretation by HNC's and
OSI's respective counsel of the Code, applicable Treasury Regulations, judicial
authority and administrative ruling and practice, all as of the date hereof. The
Internal Revenue Service (the "IRS") is not precluded from adopting a contrary
position. In addition, there can be no assurance that future legislative,
judical or administrative changes or interpretations will not adversely affect
the accuracy of the statements and conclusions set forth herein. Any such
changes or interpretations could be applied retroactively and could affect the
tax consequences of the Merger to HNC, OSI and/or their respective stockholders.



                                       38
<PAGE>   48

           Subject to the limitations and qualifications referred to herein, and
as a result of the Merger's qualifying as a Reorganization, HNC's and OSI's
respective counsel are of the opinion that:

                     (a) No gain or loss will be recognized by holders of OSI
           Common Stock or OSI Preferred Stock who hold such stock as a capital
           asset solely upon their receipt of HNC Common Stock in exchange
           therefor in the Merger (except to the extent of cash received in lieu
           of a fractional share thereof);

                     (b) The aggregate tax basis of the HNC Common Stock
           received in the Merger by an OSI stockholder (including any
           fractional share of HNC Common Stock not actually received) will be
           the same as the aggregate tax basis of the OSI Common Stock and/or
           OSI Preferred Stock surrendered in exchange therefor;

                     (c) The holding period of the HNC Common Stock received in
           the Merger by an OSI stockholder will include the period during which
           the stockholder held the OSI Common Stock and/or OSI Preferred Stock
           of such OSI stockholder surrendered in exchange therefor, provided
           that the OSI Common Stock and/or OSI Preferred Stock is held by such
           OSI stockholder as a capital asset at the time of the Merger;

                     (d) Cash payments received by holders of OSI Common Stock
           or OSI Preferred Stock in lieu of a fractional share of HNC Common
           Stock will be treated as if such fractional share of HNC Common Stock
           had been issued in the Merger and then redeemed by HNC. An OSI
           stockholder receiving such cash generally will recognize gain or
           loss, upon such payment, measured by the difference (if any) between
           the amount of cash received and the stockholder's basis in such
           fractional share; and

                     (e) Neither HNC, Merger Sub nor OSI will recognize material
amounts of gain or loss solely as a result of the Merger.

           The parties are not requesting a ruling from the IRS in connection
with the Merger. The Exhibit Opinions neither bind the IRS nor preclude the IRS
from adopting a position contrary to such opinions. It is not a condition to the
Merger that HNC or OSI receive an opinion from their respective counsel that the
Merger constitutes a Reorganization.

           A successful IRS challenge to the "Reorganization" status of the
Merger would result in an OSI stockholder's recognizing gain or loss with
respect to each share of OSI Common Stock or OSI Preferred Stock surrendered
equal to the difference between the stockholder's basis in such share of OSI
stock and the fair market value, as of the Effective Time of the Merger, of the
HNC Common Stock received in exchange therefor. In such event, a stockholder's
aggregate basis in the HNC Common Stock so received would equal its fair market
value and such stockholder's holding period of the HNC Common Stock so received
would begin the day after the Merger.

ACCOUNTING TREATMENT

           The Merger is intended to be treated as a pooling of interests for
financial reporting purposes in accordance with generally accepted accounting
principles. Under pooling accounting treatment, the recorded assets and
liabilities and the operating results of both HNC and OSI are combined as if the
two companies were combined for all periods presented and no recognition of
goodwill in the combination is required of either party to the Merger. It is a
condition to HNC's obligations to consummate the Merger that, among other
things, HNC will have been advised in writing, as of the Effective Time, by
PricewaterhouseCoopers LLP that, subject to customary qualifications, they
concur with management's conclusion that no conditions exist that would preclude
HNC from accounting for the Merger as a "pooling of interests," and OSI will
have been advised in writing, as of the Effective Time, by
PricewaterhouseCoopers LLP that, subject to customary qualifications, they
concur with management's conclusion that no conditions exist that would preclude
OSI from being a party to a business combination for which the pooling of
interests method of accounting would be available.

GOVERNMENT AND REGULATORY APPROVALS

   
           Transactions such as the Merger are reviewed by the Department of
Justice and the FTC to determine whether they comply with applicable antitrust
laws. Under the provisions of the HSR Act, the Merger may not be consummated
until certain information has been furnished to the Department of Justice and
the FTC and the specified waiting period requirements of the HSR Act have been
satisfied. HNC and OSI each filed their respective notification and report forms
under the HSR Act on October 2, 1998. On October 15, 1998, the waiting period
requirement under the HSR Act was satisfied.
    



                                       39
<PAGE>   49

           At any time before or after the Effective Time, state attorneys
general, foreign regulatory agencies or a private person or entity could
challenge the Merger under the antitrust laws and seek, among other things, to
enjoin the Merger or to cause HNC to divest itself, in whole or in part, of
assets or businesses of HNC and/or of OSI. Based on information available to
them, HNC and OSI believe that the Merger will not violate federal or state
antitrust laws. However, there can be no assurance that a challenge to the
Merger on antitrust grounds will not be made or that, if such a challenge is
made, HNC and OSI will prevail or will not be required to accept certain
conditions, possibly including divestitures or hold-separate agreements, or
certain mandatory licensing, in order to consummate the Merger.

           Under the Merger Agreement, conditions to both HNC's and OSI's
obligations to consummate the Merger include the absence of any injunction or
other legal, contractual or regulatory restraint which would restrict the Merger
or require divestiture of assets by HNC or OSI.

APPRAISAL RIGHTS

           When the Merger is effected, stockholders of OSI who comply with the
procedures prescribed in Section 262 of the DGCL ("Section 262") will be
entitled to a judicial determination of the "fair value" of their shares
(exclusive of any element of value arising from the accomplishment or
expectation of the Merger) and to receive from OSI payment of such fair value in
cash. Shares of OSI Common Stock and OSI Preferred Stock which are outstanding
immediately prior to the Effective Time and with respect to which appraisal
shall have been properly demanded in accordance with Section 262 shall not be
converted into the right to receive shares of HNC Common Stock in the Merger
(the "Merger Consideration") at or after the Effective Time unless and until the
holder of such shares withdraws his, her or its demand for such appraisal or
becomes ineligible for such appraisal.

           Holders of HNC Common Stock and holders of OSI Options outstanding at
the Effective Time are not entitled to appraisal rights in connection with the
Merger.

   
           It is a condition to HNC's obligations under the Merger Agreement 
that the holders of no more than 5% of the shares of OSI Common Stock (on an 
as-converted basis) are eligible to exercise appraisal rights under the DGCL.

           The following is a brief summary of the statutory procedures to be
followed by a stockholder of OSI in order to dissent from the Merger and perfect
appraisal rights under the DGCL. THIS SUMMARY IS NOT INTENDED TO BE COMPLETE AND
IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SECTION 262, THE TEXT OF WHICH IS
INCLUDED AS APPENDIX B TO THIS PROXY STATEMENT/PROSPECTUS. ANY OSI STOCKHOLDER
CONSIDERING DEMANDING APPRAISAL IS ADVISED TO CONSULT LEGAL COUNSEL.
    


           Written Demand for Appraisal. A written demand for appraisal of
shares of OSI Common Stock or OSI Preferred Stock must be delivered to OSI by a
stockholder seeking appraisal before the taking of the vote on the Merger. This
written demand must be separate from any proxy or vote abstaining from or voting
against approval of the Merger. Voting against approval of the Merger,
abstaining from voting or failing to vote with respect to approval of the Merger
will not constitute a demand for appraisal within the meaning of Section 262.

           OSI stockholders electing to exercise their appraisal rights under
Section 262 must not vote for approval of the Merger. A vote by an OSI
stockholder against approval of the Merger is not required in order for that
stockholder to exercise appraisal rights. However, if an OSI stockholder returns
a signed proxy but does not specify a vote against approval of the Merger or a
direction to abstain, the proxy, if not revoked, will be voted for approval of
the Merger, which will have the effect of waiving that stockholder's appraisal
rights.

           A written demand for appraisal must reasonably inform OSI of the
identity of the stockholder of record and that such stockholder intends thereby
to demand appraisal. Accordingly, a demand for appraisal should be executed by
or for the OSI stockholder of record, fully and correctly, as such stockholder's
name appears on the stock certificate. If OSI Common Stock or OSI Preferred
Stock is owned of record in a fiduciary capacity, such as by a trustee, guardian
or custodian, such demand must be executed by the fiduciary. If OSI Common Stock
or OSI Preferred Stock is owned of record by more than one person, as in a joint
tenancy or tenancy in common, such demand must be executed by or for all joint
owners. An authorized agent, including an agent for two or more joint owners,
may execute the demand for appraisal for a stockholder of record; however, the
agent must identify the record owner and expressly disclose the fact that, in
exercising the demand, he is acting as agent for the record owner.

           A record owner who holds OSI Common Stock or OSI Preferred Stock as a
nominee for others may exercise appraisal rights with respect to the OSI Common
Stock and OSI Preferred Stock held for all or less than all beneficial owners of
OSI Common Stock and OSI Preferred Stock as to which the holder is the record
owner. In such case, the written demand must set forth the number of shares of
OSI Common Stock and OSI Preferred Stock covered by such 



                                       40
<PAGE>   50

demand. Where the number of shares of OSI Common Stock and OSI Preferred Stock
is not expressly stated, the demand will be presumed to cover all shares of OSI
Common Stock and OSI Preferred Stock outstanding in the name of such record
owner. Beneficial owners who are not record owners and who intend to exercise
appraisal rights should instruct the record owner to comply strictly with the
statutory requirements with respect to the delivery of written demand prior to
the taking of the vote on the Merger.

           An OSI stockholder who elects to exercise appraisal rights must mail
or deliver the written demand for appraisal to: Secretary, Open Solutions Inc.,
300 Winding Brook Drive, Glastonbury, Connecticut 06033, or deliver such demand
to OSI in person at the Special Meeting. The written demand for appraisal should
specify the stockholder's name and mailing address and the number of shares of
OSI Common Stock and OSI Preferred Stock covered by the demand, and should state
that the stockholder is thereby demanding appraisal in accordance with Section
262.

           Other Procedures. Within ten days after the Effective Time, OSI must
provide notice as to the date of effectiveness of the Merger to all OSI
stockholders who have duly and timely delivered demands for appraisal and who
have not voted for approval of the Merger Agreement (a "Dissenting
Stockholder").

           Within 120 days after the Effective Time, any Dissenting Stockholder
is entitled, upon written request, to receive from OSI a statement setting forth
the aggregate number of shares not voted in favor of approval of the Merger and
the Merger Agreement and with respect to which demands for appraisal have been
received by OSI, and the number of holders of such shares. Such statement must
be mailed within 10 days after the written request therefor has been received by
OSI.

           Within 120 days after the Effective Time, either OSI or any
Dissenting Stockholder may file a petition in the Delaware Court of Chancery
demanding a determination of the fair value of each share of OSI Common Stock
and OSI Preferred Stock of all Dissenting Stockholders. If a petition for an
appraisal is timely filed, after a hearing on such petition, the Delaware Court
of Chancery will determine which of the OSI stockholders are entitled to
appraisal rights and thereafter will appraise the shares of OSI Common Stock and
OSI Preferred Stock owned by such stockholders, determining the fair value of
such shares, exclusive of any element of value arising from the accomplishment
or expectation of the Merger, together with the fair rate of interest to be
paid, if any, upon the amount determined to be fair value. In determining fair
value, the Delaware Court of Chancery is to take into account all relevant
factors. In Weinberger v. UOP, Inc., et al., the Delaware Supreme Court
discussed the factors that could be considered in determining fair value in an
appraisal proceeding, stating that "proof of value by any techniques or methods
which are generally considered acceptable in the financial community and
otherwise admissible in court" should be considered and the "[f]air price
obviously requires consideration of all relevant factors involving the value of
a company." The Delaware Supreme Court stated that in making this determination
of fair value the court and the appraiser may consider "all factors and elements
which reasonably might enter into the fixing of value," including "market value,
asset value, dividends, earnings prospects, the nature of the enterprise and any
other facts which were known or which could be ascertained as of the date of the
merger and which throw any light on future prospects of the merger corporation
 ...." The Delaware Supreme Court has construed Section 262 to mean that
"elements of future value, including the nature of the enterprise, which are
known or susceptible of proof as of the date of the merger and not the product
of speculation, may be considered." However, such court noted that Section 262
provides that fair value is to be determined "exclusive of any element of value
arising from the accomplishment or expectation of the merger."

   
           Stockholders of OSI considering whether to seek appraisal should bear
in mind that the fair value of their OSI Common Stock and OSI Preferred Stock
determined under Section 262 could be more than, the same as, or less than the
value of the Merger Consideration to be exchanged in the Merger. Moreover, OSI
reserves the right to assert in any appraisal proceeding that, for purposes
thereof, the "fair value" of the OSI Common Stock and OSI Preferred Stock is
less than the value of the Merger Consideration.
    

           The cost of the appraisal proceeding may be determined by the
Delaware Court of Chancery and taxed upon the parties as the court deems
equitable in the circumstances. Upon application of a Dissenting Stockholder,
the court may order that all or a portion of the expenses incurred by any
Dissenting Stockholder in connection with the appraisal proceeding, including,
without limitation, reasonably attorneys' fees, and the fees and expenses of
experts, be charged pro rata against the value of all shares entitled to
appraisal. In the absence of such a determination or assessment, each party
bears its own expenses.



                                       41
<PAGE>   51

           A Dissenting Stockholder who has duly demanded appraisal in
compliance with Section 262 will not, after the Effective Time, be entitled to
vote for any purpose the OSI Common Stock and OSI Preferred Stock subject to
such demand or to receive payment of dividends or other distributions on such
OSI Common Stock and OSI Preferred Stock, except for dividends or other
distributions payable to stockholders of record at a date prior to the Effective
Time.

           At any time within 60 days after the Effective Time, any Dissenting
Stockholder will have the right to withdraw his, her or its demand for appraisal
and to accept the Merger Consideration. After this period, a Dissenting
Stockholder may withdraw his or her demand for appraisal only with the consent
of OSI. If no petition for appraisal is filed with the Delaware Court of
Chancery within 120 days after the Effective Time, Dissenting Stockholders'
rights to appraisal shall cease and they shall be entitled only to receive the
Merger Consideration. Inasmuch as OSI has no obligation to file such a petition,
any OSI stockholder who desires such a petition to be filed is advised to file
it on a timely basis. However, no petition timely filed in the Delaware Court of
Chancery demanding appraisal shall be dismissed as to any OSI stockholder
without the approval of the Delaware Court of Chancery, and such approval may be
conditioned upon such terms as the Delaware Court of Chancery deems just.

           A vote for the Merger will constitute a waiver of appraisal rights. A
failure to vote against the Merger will not, of itself, under Delaware law,
constitute a waiver of appraisal rights. If a stockholder returns a proxy which
does not contain instructions as to how it should be voted, such proxy will be
voted in favor of the Merger and, accordingly, appraisal rights will be waived.
As described above, a vote against the Merger is not sufficient to perfect
appraisal rights. A stockholder's failure to make the written demand prior to
the Special Meeting under Delaware law as described above, will constitute a
waiver of appraisal rights.

           ANY HOLDER WHO FAILS TO COMPLY WITH THE REQUIREMENTS OF SECTION 262
OF THE DELAWARE GENERAL CORPORATION LAW (SEE APPENDIX B) WILL FORFEIT HIS, HER
OR ITS RIGHTS TO DISSENT AND WILL RECEIVE THE MERGER CONSIDERATION FOR HIS, HER
OR ITS SHARES.

INTERESTS OF CERTAIN PERSONS IN THE MERGER


   
           In considering the recommendation of the OSI Board with respect to
the Merger, stockholders of OSI should be aware that certain members of the
management of OSI and the OSI Board have certain interests in the Merger in
addition to the interests of the OSI stockholders generally. In connection with
the OSI Board's determination that the Merger is fair to the stockholders of
OSI, the OSI Board was aware of these potential conflicts and carefully
considered conflict of interest issues relating to the matters described below.
    

           Mr. Anderson and HNC entered into a letter agreement regarding the
terms of his continued employment with OSI which provides that, effective as of
the Closing, (i) Mr. Anderson shall continue to work for OSI as its Chief
Executive Officer for at least three years after the Effective Time, (ii) HNC
shall pay Mr. Anderson his current 1998 cash compensation (including a cash
bonus) for the remainder of the calendar year, and thereafter shall pay Mr.
Anderson compensation consistent with that paid by HNC to its comparably
situated executives, but in no event will his salary be reduced below the 1998
level during the three year period described above and (iii) Mr. Anderson agreed
that the salary continuation benefits provided for in his current employment
agreement with OSI would be available in the event of any triggering event (as
defined in that agreement) that occurs through, but not beyond, the third
anniversary of the Effective Time.

   
           Mr. Person and HNC entered into a letter agreement regarding the
terms of his continued employment with OSI which provides that, effective as of
the Closing, (i) Mr. Person shall continue to work for OSI as its President and
Chief Operating Officer for at least three years after the Effective Time, (ii)
HNC shall pay Mr. Person his current 1998 cash compensation (including a cash
bonus) for the remainder of the calendar year, and thereafter shall pay Mr.
Person compensation consistent with that paid by HNC to its comparably situated
executives, but in no event will his salary be reduced below the 1998 level
during the three year period described above and (iii) Mr. Person agreed that
the salary continuation benefits provided for in his current employment
agreement with OSI would be available in the event of any triggering event (as
defined in that agreement) that occurs through, but not beyond, the third
anniversary of the Effective Time.

           In accordance with the terms of Mr. Willemin's existing agreement
with OSI, each outstanding OSI Option held by Mr. Willemin (currently a total of
100,000 OSI Options) will become fully vested and exercisable immediately prior
to consummation of the Merger.
    



                                       42
<PAGE>   52

           Prior to the Effective Time, OSI expects, in accordance with past
practice, to authorize the grant of options to purchase approximately 200,000
shares of OSI Common Stock to certain officers and other employees pursuant to
OSI's 1994 Stock Option Plan. OSI does not expect to grant any of such options
to any of the executive officers of OSI.

           OSI expects to enter into a consulting agreement with Richard P.
Yanak, a director of OSI, with a term commencing as of the Effective Time and
extending through 2000. OSI expects to retain Mr. Yanak on a consulting basis to
assist OSI in electronic commerce product development, sales and marketing
activities and such other services relating to the business of OSI as Mr. Yanak
and OSI shall mutually agree upon, on terms to be determined.

           The Merger Agreement provides that, for a period of six years after
the Effective Time, HNC shall, and shall cause the Surviving Corporation to,
indemnify and hold harmless the present and former officers and directors of OSI
and any officers, directors and employees of OSI who are (or were) fiduciaries
of OSI employee benefit plans in respect of certain acts or omissions of such
persons taken or occurring prior to the Effective Time and in their capacity as
an officer, director or fiduciary, and to provide officers' and directors'
liability insurance covering OSI's officers and directors for a period of five
years after effectiveness of the Merger, subject to a maximum annual insurance
premium.



                                       43
<PAGE>   53
                               TERMS OF THE MERGER

           The following discussion summarizes the terms of the Merger
Agreement, the Merger and the transactions contemplated thereby. The following
is not, however, a complete statement of all provisions of the Merger Agreement
and related agreements. The following description of the Merger, the Merger
Agreement and related transactions is qualified in all respects by reference to
the complete text of the Merger Agreement which is attached to this Proxy
Statement/Prospectus as Appendix A.

EFFECTIVE TIME

   
           The Merger will become effective upon the filing by OSI of a
Certificate of Merger with the Delaware Secretary of State. The Closing of the
Merger will occur as soon as practicable, and in all events by the second
business day after the satisfaction or waiver of the conditions to the Merger,
or on such other day as HNC and OSI may mutually agree. Assuming all conditions
to the Merger are met or waived prior thereto, it is anticipated that the
Closing Date and the Effective Time will occur on or about ___________, 1998.
    

MANNER AND BASIS OF CONVERTING OSI SHARES

   
           Upon the effectiveness of the Merger, each share of OSI Common Stock
and each share of OSI Preferred Stock that is issued and outstanding immediately
prior to the Effective Time (other than dissenting shares as to which appraisal
rights have been exercised) will be converted into the right to receive HNC
Common Stock, and each OSI Option that is outstanding immediately prior to the
Effective Time will be assumed by HNC and converted into an HNC Option. The
Merger Agreement uses a conversion formula to compute the number of shares of
HNC Common Stock into which each share of OSI Common Stock and OSI Preferred
Stock will be converted in the Merger and to compute the number of HNC Options
into which each OSI Option will be converted in the Merger. The results of this
conversion formula depend on the number of outstanding shares of OSI Common
Stock and of each series of OSI Preferred Stock, and on the number of OSI
Options, that are outstanding immediately prior to the Effective Time. The steps
used in this conversion formula are summarized in more detail below.
    

           Conversion of OSI Stock

           The Merger Agreement provides that (i) the number of shares of HNC
Common Stock that will be issued in the Merger upon the conversion of
outstanding shares of OSI Common Stock and OSI Preferred Stock plus (ii) the
number of shares of HNC Common Stock that will be subject to all HNC Options
that are issued in the Merger upon the conversion of outstanding OSI Options,
will not exceed an aggregate total of 2,956,618 shares of HNC Common Stock (such
number of shares of HNC Common Stock to be issued in the Merger and issuable
upon exercise of HNC Options issued in the Merger is hereinafter referred to as
the "HNC Merger Shares").

   
           The terms of OSI's Certificate of Incorporation provide that, before
any Merger consideration is paid to the holders of OSI Common Stock: (i) each
outstanding share of OSI Series A-1 Preferred Stock is entitled to receive in
the Merger a preferential payment of $1.50 per share plus any declared but
unpaid dividends thereon (the "OSI Series A-1 Preference"); (ii) each
outstanding share of OSI Series A-2 Preferred Stock is entitled to receive in
the Merger a preferential payment of $3.00 per share plus any declared but
unpaid dividends thereon (the "OSI Series A-2 Preference"); (iii) each
outstanding share of OSI Series B Preferred Stock is entitled to receive in the
Merger a preferential payment of $3.00 per share plus any accrued but unpaid
dividends thereon (the "OSI Series B Preference"); (iv) each outstanding share
of OSI Series C Preferred Stock is entitled to receive in the Merger a
preferential payment of $4.50 per share plus any accrued but unpaid dividends
thereon (the "OSI Series C Preference"); and (v) each outstanding share of OSI
Series D Preferred Stock is entitled to receive in the Merger a preferential
payment of $6.00 per share plus any accrued but unpaid dividends thereon (the
"OSI Series D Preference"). Each of the above preferential payments is
individually referred to herein as an "OSI Series Preference." There are
currently no declared or accrued but unpaid dividends on the shares of any
series of OSI Preferred Stock and none are expected to be declared or accrued
prior to consummation of the Merger.
    

           After receiving such preferential payments of Merger consideration,
each series of OSI Preferred Stock is also entitled to participate pro rata with
the holders of the outstanding OSI Common Stock in receiving all remaining
Merger consideration that is payable to OSI's stockholders, and, for purposes of
this participation right, each share of OSI Preferred Stock is deemed to be the
number of shares of OSI Common Stock into which it is convertible under the
terms of 



                                       44
<PAGE>   54

OSI's Certificate of Incorporation. Currently, each share of each series of OSI
Preferred Stock is convertible into one share of OSI Common Stock.

           The conversion formula used in the Merger Agreement implements the
above principles in determining the number of shares of HNC Common Stock into
which each outstanding share of OSI Common Stock and OSI Preferred Stock will be
converted in the Merger and operates as follows:

   
           -    Determine the Aggregate Series Preference Amount for each Series
                of OSI Preferred Stock. First, the total dollar value of the
                aggregate amount of preferential merger payments payable to all
                of the shares of each series of OSI Preferred Stock is computed.
                To compute this aggregate dollar amount for each series of OSI
                Preferred Stock, the OSI Series Preference applicable to that
                series of OSI Preferred Stock is multiplied by the number of
                shares of such series that are issued and outstanding
                immediately prior to the consummation of the Merger. This
                resulting product is the "Aggregate Preference Amount" for that
                series of OSI Preferred Stock and represents the dollar value of
                the aggregate merger preference for that series of OSI Preferred
                Stock. The "Aggregate Preference Amount" for the OSI Series A-1
                Preferred Stock, OSI Series A-2 Preferred Stock, OSI Series B
                Preferred Stock, OSI Series C Preferred Stock and OSI Series D
                Preferred Stock is hereinafter referred to as the "Aggregate
                Series A-1 Preference Amount," "Aggregate Series A-2 Preference
                Amount," "Aggregate Series B Preference Amount," "Aggregate
                Series C Preference Amount" and "Aggregate Series D Preference
                Amount," respectively.

           -    Compute the Series Merger Shares for each Series of OSI
                Preferred Stock. Next, the Aggregate Preference Amount for each
                series of OSI Preferred Stock is divided by $39.475 (the "HNC
                Average Price Per Share") and the resulting quotient (rounded
                down to the nearest whole number of shares of HNC Common Stock)
                is hereinafter called the "Series Merger Shares" for that series
                of OSI Preferred Stock. The "Series Merger Shares" of a series
                of OSI Preferred Stock means the total number of shares of HNC
                Common Stock that will be issued to all the holders of such
                series of OSI Preferred Stock in order to satisfy their
                aggregate merger preference rights. The number of "Series Merger
                Shares" for the OSI Series A-1 Preferred Stock, OSI Series A-2
                Preferred Stock, OSI Series B Preferred Stock, OSI Series C
                Preferred Stock and OSI Series D Preferred Stock is hereinafter
                referred to as the "Series A-1 Merger Shares," "Series A-2
                Merger Shares," "Series B Merger Shares," "Series C Merger
                Shares," and "Series D Merger Shares," respectively. The "HNC
                Average Price Per Share" of $39.475 is the average of the
                closing prices per share of HNC Common Stock as quoted on the
                Nasdaq Stock Market for the five trading days ended on September
                15, 1998, the date before the Merger Agreement was signed.

           -    Compute the Series Conversion Number for each Series of OSI
                Preferred Stock. Next, the number of Series Merger Shares for
                each series of OSI Preferred Stock is divided by the number of
                shares of that series of OSI Preferred Stock that are issued and
                outstanding immediately prior to the consummation of the Merger,
                and the resulting quotient is the "Series Conversion Number" for
                that series of OSI Preferred Stock. The Series Conversion Number
                for each series of OSI Preferred Stock is the number of shares
                of HNC Common Stock into which each outstanding share of that
                series of OSI Preferred Stock will be converted in order to
                satisfy the merger preference rights of that series of OSI
                Preferred Stock. The "Series Conversion Number" for the OSI
                Series A-1 Preferred Stock, OSI Series A-2 Preferred Stock, OSI
                Series B Preferred Stock, OSI Series C Preferred Stock and OSI
                Series D Preferred Stock is hereinafter referred to as the
                "Series A-1 Conversion Number," "Series A-2 Conversion Number,"
                "Series B Conversion Number," "Series C Conversion Number" and
                "Series D Conversion Number," respectively.
    

           -    Compute the Preference Shares. Next, the number of shares of HNC
                Common Stock equal to the sum of the Series A-1 Merger Shares,
                the Series A-2 Merger Shares, the Series B Merger Shares, the
                Series C Merger Shares and the Series D Merger Shares is
                computed and this aggregate number of shares of HNC Common Stock
                is referred to as the "Preference Shares." The "Preference
                Shares" is the total number of shares of HNC Common Stock that
                will be issued to all holders of OSI Preferred Stock in the
                Merger in satisfaction of their aggregate merger preference
                rights.

   
           -    Compute the Participation Shares. Next, the number of Preference
                Shares is subtracted from the number of HNC Merger Shares, and
                the remaining number of shares of HNC Common Stock is the
                "Participation Shares." The Participation Shares represents the
                total number of the HNC Merger Shares that will be (i) issued
                upon the conversion of shares of OSI Common Stock in the Merger,
                (ii) issued upon the conversion of shares of OSI Preferred Stock
                in the Merger (after payment of the full merger preference
                payments applicable to such shares of OSI Preferred Stock as
                described above) and (iii) issuable upon the exercise of all HNC
                Options granted upon the conversion of OSI Options in the Merger
                (see below).
    

           -    Compute the Participation Number. Next, the number of the
                Participation Shares is divided by the "Fully Diluted OSI
                Shares" (as defined below), and this resulting quotient is the
                "Participation Number." The "Fully Diluted OSI Shares" is the
                number of shares of OSI Common Stock that is equal to the sum
                of: (i) the total number of shares of OSI 



                                       45
<PAGE>   55

                Common Stock that are issued and outstanding immediately prior
                to the consummation of the Merger, plus (ii) the total number of
                shares of OSI Common Stock that are issuable upon the conversion
                in full of all shares of OSI Preferred Stock that are issued and
                outstanding immediately prior to the consummation of the Merger
                plus (iii) the total number of shares of OSI Common Stock
                potentially issuable upon exercise in full of all OSI Options
                that are outstanding immediately prior to the consummation of
                the Merger (computed without regard to vesting restrictions),
                plus (iv) the total number of all shares of OSI Common Stock
                that are potentially issuable upon the conversion, exercise or
                exchange of any warrants, options (other than OSI Options),
                convertible securities (other than OSI's Preferred Stock) or
                other securities of OSI that are outstanding immediately prior
                to the consummation of the Merger (computed without regard to
                vesting restrictions).

   
           -    Compute Conversion Rates for OSI Common Stock and OSI Preferred
                Stock. The above computations determine the number of shares of
                HNC Common Stock into which each share of OSI Common Stock and
                each share of OSI Preferred Stock (other than any such shares as
                to which dissenters' appraisal rights are exercised) will be
                converted in the Merger (subject to the elimination of
                fractional shares of HNC Common Stock as described below), as
                follows:
    

                    OSI Common Stock: Each share of OSI Common Stock that is 
issued and outstanding immediately prior to the consummation of the Merger will
be converted into a number of shares of HNC Common Stock equal to the
PARTICIPATION NUMBER;

   
                    OSI Series A-1 Preferred Stock: Each share of OSI Series A-1
Preferred Stock that is issued and outstanding immediately prior to the
consummation of the Merger will be converted into the right to receive a number
of shares of HNC Common Stock equal to the sum of (i) THE SERIES A-1 Conversion
NUMBER PLUS (ii) THE PRODUCT OBTAINED BY MULTIPLYING THE PARTICIPATION NUMBER BY
THE NUMBER OF SHARES OF OSI COMMON STOCK INTO WHICH SUCH SHARE OF SERIES A-1
PREFERRED STOCK IS THEN CONVERTIBLE;

                    OSI Series A-2 Preferred Stock: Each share of OSI Series A-2
Preferred Stock that is issued and outstanding immediately prior to the
consummation of the Merger will be converted into the right to receive a number
of shares of HNC Common Stock equal to the sum of the (i) THE SERIES A-2
Conversion NUMBER PLUS (ii) THE PRODUCT OBTAINED BY MULTIPLYING THE
PARTICIPATION NUMBER BY THE NUMBER OF SHARES OF OSI COMMON STOCK INTO WHICH SUCH
SHARE OF SERIES A-2 PREFERRED STOCK IS THEN CONVERTIBLE;

                    OSI Series B Preferred Stock: Each share of OSI Series B
Preferred Stock that is issued and outstanding immediately prior to the
consummation of the Merger will be converted into the right to receive a number
of shares of HNC Common Stock equal to the sum of (i) THE SERIES B Conversion
NUMBER PLUS (ii) THE PRODUCT OBTAINED BY MULTIPLYING THE PARTICIPATION NUMBER BY
THE NUMBER OF SHARES OF OSI COMMON STOCK INTO WHICH SUCH SHARE OF SERIES B
PREFERRED STOCK IS THEN CONVERTIBLE;

                    OSI Series C Preferred Stock: Each share of OSI Series C
Preferred Stock that is issued and outstanding immediately prior to the
consummation of the Merger will be converted into the right to receive a number
of shares of HNC Common Stock equal to the sum of (i) THE SERIES C Conversion
NUMBER PLUS (ii) THE PRODUCT OBTAINED BY MULTIPLYING THE PARTICIPATION NUMBER BY
THE NUMBER OF SHARES OF OSI COMMON STOCK INTO WHICH SUCH SHARE OF SERIES C
PREFERRED STOCK IS THEN CONVERTIBLE; and
    

   
                    OSI Series D Preferred Stock: Each share of OSI Series D
Preferred Stock that is issued and outstanding immediately prior to the
consummation of the Merger will be converted into the right to receive a number
of shares of HNC Common Stock equal to the sum of (i) THE SERIES D Conversion
NUMBER PLUS (ii) THE PRODUCT OBTAINED BY MULTIPLYING THE PARTICIPATION NUMBER BY
THE NUMBER OF SHARES OF OSI COMMON STOCK INTO WHICH SUCH SHARE OF SERIES D
PREFERRED STOCK IS THEN CONVERTIBLE.
    

           Hypothetical Illustration of Merger Conversion Formula

   
           This paragraph is intended to illustrate the Merger conversion
formula assumes that, immediately prior to the consummation of the Merger,
2,236,013 shares of OSI Common Stock, 1,000,000 shares of OSI Series A-1
Preferred Stock, 583,333 shares of OSI Series A-2 Preferred Stock, 1,736,250
shares of OSI Series B Preferred Stock, 1,375,000 shares of OSI Series C
Preferred Stock, 1,250,000 shares of OSI Series D Preferred and OSI Options to
purchase a total of 1,887,500 shares of OSI Common Stock (and no other OSI
securities) will be issued and outstanding. The above assumptions were based on
the number of shares and OSI Options outstanding on September 16, 1998, and
assumes that after September 16, 1998 and prior to the 
    



                                       46
<PAGE>   56
   
consummation of the Merger (i) all outstanding warrants to purchase shares of
OSI stock are exercised in full and (ii) an additional 200,000 OSI Options are
granted. Based on those assumptions: (a) the Participation Number would be
0.23794, and each such share of OSI Common Stock, OSI Series A-1 Preferred
Stock, OSI Series A-2 Preferred Stock, OSI Series B Preferred Stock, OSI Series
C Preferred Stock and OSI Series D Preferred Stock would be converted in the
Merger into the right to receive 0.23794, 0.27594, 0.31394, 0.31394, 0.35194 and
0.38993 shares of HNC Common Stock, respectively (subject to the elimination of
fractional shares), and each OSI Option to purchase one share of OSI Common
Stock would be converted in the Merger into an option to purchase 0.23794 shares
of HNC Common Stock (subject to the elimination of fractional shares) at an
exercise price per share of HNC Common Stock equal to the pre-Merger exercise
price per share of OSI Common Stock divided by 0.23794. This would result in the
issuance by HNC of a total of 2,507,507 shares of HNC Common Stock (subject to
the elimination of fractional shares). Based on the closing sale price of the
HNC Common Stock as reported by Nasdaq on December ____, 1998, the latest
practicable date before the mailing of this Proxy Statement/Prospectus, the
value of 2,507,507 shares of HNC Common Stock would be an aggregate of
$__________ and the value of the HNC Common Stock to be received by each holder
of OSI Common Stock, OSI Series A-1 Preferred Stock, OSI Series A-2 Preferred
Stock, OSI Series B Preferred Stock, OSI Series C Preferred Stock and OSI Series
D Preferred Stock would be $_________, $_________, $_________, $_________,
$_________, $_________, and $_________ per share, respectively.
    


           THE ABOVE ILLUSTRATION IS BASED ON THE ASSUMPTIONS DESCRIBED ABOVE.
ANY CHANGES TO SUCH ASSUMPTIONS WILL ALTER THE CONVERSION RATES AT WHICH SHARES
OF OSI COMMON STOCK, OSI PREFERRED STOCK AND OSI OPTIONS WILL BE CONVERTED IN
THE MERGER.

   
           Under the terms of the Merger Agreement, the outstanding shares of
OSI Common Stock and OSI Preferred Stock and outstanding OSI Options will be
converted in the Merger into the right to receive a total of 2,956,618 shares of
HNC Common Stock. The Merger Agreement does not provide for adjustment of such
number based on fluctuations in the price of HNC Common Stock. The price of HNC
Common Stock may vary significantly between the date hereof and the date on
which the OSI stockholders vote with respect to the Merger Agreement. To the
extent that the market price for HNC Common Stock increases or decreases before
the Effective Time, the market value at the Effective Time of HNC Common Stock
to be received by OSI stockholders in the Merger would correspondingly increase
or decrease. For example, during the period from October 1, 1998 to __________,
1998, the latest practicable date before the mailing of this Proxy
Statement/Prospectus, the sale price of HNC Common Stock ranged from a high of
$_______ per share to a low of $__________ per share. Assuming that an aggregate
of 2,507,507 shares of HNC Common Stock are issued in the Merger to the OSI
stockholders, the total value of the shares of HNC Common Stock issued in the
Merger to the OSI stockholders during that same period would have ranged from
$____________ to $___________. See "Risk Factors--Risks Related to the
Merger--Risks Associated with Right to Receive Fixed Number of Shares."
       

   
           No fractional shares of HNC Common Stock will be issued in connection
with the Merger. Each holder of OSI Common Stock and each holder of OSI
Preferred Stock who would otherwise be entitled to receive a fraction of a share
of HNC Common Stock will receive, in lieu of such fractional share, an amount of
cash computed based upon $39.475 per share, which is the average of the closing
prices per share of HNC Common Stock on the Nasdaq National Market as reported
in The Wall Street Journal for the five trading days ended on September 15,
1998.
    

           Upon the Closing Date, each holder of shares of OSI Common Stock
and/or OSI Preferred Stock will be required to surrender the certificate(s) for
such shares, duly endorsed to HNC for cancellation as of the Effective Time,
together (if requested by HNC) with each OSI stockholder's brief agreement to
and acknowledgment of the escrow and indemnification requirements of the Merger
Agreement. Promptly after the Effective Time and receipt of such certificates
and (if requested) such agreement and acknowledgment, HNC or its transfer agent
will issue to each tendering holder of such an OSI stock certificate a
certificate for the number of shares of HNC Common Stock to which such holder is
entitled pursuant to the Merger (less the shares of HNC Common Stock to be
placed in escrow under the Merger Agreement and Escrow Agreement, as described
below), plus a check for the amount of cash in lieu of any fractional shares.
See "--Indemnification and Escrow." At or about the Closing Date, HNC will
deliver the certificates representing the Escrow Shares to the Escrow Agent
pursuant to the Escrow Agreement.

           No certificates representing shares of HNC Common Stock will be
issued to any holder of OSI Common Stock or OSI Preferred Stock who fails to
surrender his, her or its OSI stock certificates. No dividends or distributions
payable to holders of record of HNC Common Stock after the Effective Time, or
cash payable in lieu of fractional shares, will be paid to the holder of any OSI
stock certificate unless and until such holder surrenders such OSI stock
certificate to HNC. Subject to the effect, if any, of applicable escheat and
other laws, following surrender of any OSI stock certificate, any dividends or
distributions on HNC Common Stock will be delivered to the person entitled
thereto, without interest.

   
           After the Effective Time, there will be no further registration of
transfers on the stock transfer books of OSI of any shares of capital stock of
OSI that were outstanding immediately prior to the Effective Time. If, after the
Effective Time, OSI stock certificates are presented for any reason, they will
be canceled and exchanged as provided in the Merger Agreement. Until
certificates representing shares of OSI Common Stock and/or OSI Preferred Stock
that are outstanding immediately prior to the Effective Time are surrendered
pursuant to the Merger Agreement, such certificates will be deemed, for all
purposes, to evidence ownership of the number of shares of HNC Common Stock into
which such shares of OSI Common Stock and/or OSI Preferred Stock will have been
converted pursuant to the Merger.
    

ASSUMPTION AND CONVERSION OF OSI STOCK OPTIONS

   
           Upon the Effective Time, each OSI Option that is outstanding
immediately prior to the Effective Time will be assumed by HNC and converted
into an HNC Option to purchase a number of shares of HNC Common Stock determined
by multiplying the number of shares of OSI Common Stock that are subject to such
OSI Option immediately prior to the Effective Time by the Participation Number,
at an exercise price per share of HNC Common Stock equal to the exercise price
per share of OSI Common Stock that was in effect for such OSI Option immediately
prior to the Effective Time divided by the Participation Number. The terms,
exercisability, vesting schedule, status as an "incentive stock option" under
Section 422 of the Code (if applicable) or as a nonqualified stock option, and
all other terms and conditions of each OSI Option (including without limitation
the provisions of the OSI option plan that form part of the 
    

                                       47
<PAGE>   57
   
terms and conditions of such OSI Option) that is converted into an HNC Option in
the Merger will (except as otherwise provided in the terms of such OSI Options),
to the extent permitted by law and otherwise reasonably practicable, be
unchanged and continue in effect after the Effective Time. Pre-Merger employment
or other service with OSI will be credited to each holder of an OSI Option for
purposes of applying any vesting schedule based on the duration of such holder's
employment or other service that is contained in the OSI Option issued to such
holder that is converted into an HNC Option in the Merger in order to determine
the number of shares of HNC Common Stock that are exercisable under such HNC
Option at any point in time.
    

STOCK OWNERSHIP IMMEDIATELY FOLLOWING THE MERGER

   
           Based upon the capitalization of OSI as of the close of business on
September 16, 1998 (including the number of shares of OSI Common Stock and OSI
Preferred Stock outstanding and the number of shares issuable upon exercise of
outstanding OSI Options), and assuming that after September 16, 1998 and prior
to consummation of the Merger (i) all warrants to purchase OSI stock that were
outstanding on September 16, 1998 are exercised in full and (ii) options to
purchase 200,000 shares of OSI Common Stock are granted by OSI, then upon
consummation of the Merger (assuming no OSI stockholders exercise appraisal
rights), an aggregate of approximately 2,507,507 shares of HNC Common Stock will
be issued in the Merger and HNC will assume OSI Options to purchase up to
approximately 449,111 additional shares of HNC Common Stock (in each case
subject to the elimination of fractional shares). Since OSI's capitalization is
subject to change prior to the Effective Time, these numbers may vary from the
figures that actually result from the Merger.
    

EFFECTS OF THE MERGER

   
           When the Merger is completed, Merger Sub will cease to exist, and all
of the business, assets, liabilities and obligations of Merger Sub will be
transferred to and assumed by OSI by operation of law, with OSI continuing in
existence as the Surviving Corporation. Pursuant to the Merger Agreement, the
Certificate of Incorporation of OSI, as amended and restated in the Merger
Agreement, will become the Certificate of Incorporation of the Surviving
Corporation and the Bylaws of OSI, as amended in the Merger Agreement, will
become the Bylaws of the Surviving Corporation. The officers of the Surviving
Corporation immediately after the Effective Time will be the individuals who are
the officers of Merger Sub immediately prior to the Effective Time. The members
of the Board of Directors of the Surviving Corporation immediately after the
Effective Time will be Douglas K. Anderson and three persons nominated by HNC,
who are currently anticipated to be Robert L. North, Raymond V. Thomas and
Michael A. Thiemann. There will be no change in the Board of Directors or
officers of HNC as a result of the Merger.
    


  REPRESENTATIONS AND WARRANTIES

           Under the Merger Agreement, OSI has made various representations and
warranties to HNC regarding its business, including representations and
warranties regarding: (i) its corporate good standing; (ii) its subsidiaries;
(iii) its due authorization of the Merger Agreement and transactions
contemplated thereby; (iv) its capitalization, including outstanding stock and
stock options; (v) voting arrangements and registration rights; (vi) no conflict
with charter documents, corporate documents and other agreements; (vii) absence
of litigation; (viii) taxes; (ix) the accuracy of certain financial information
regarding OSI; (x) its title to property; (xi) the absence of certain changes to
OSI's business or financial condition; (xii) certain contracts and commitments;
(xiii) the absence of default, consent requirements or restrictions with respect
to material agreements; (xiv) intellectual property rights; (xv) its compliance
with laws; (xvi) related party transactions and agreements; (xvii) employees,
labor matters and employee benefit plans; (xviii) documents and information made
available; (xix) brokers or finders; (xx) books and records; (xxi) insurance;
(xxii) environmental matters; (xxiii) voting agreements and proxies; (xxiv) the
vote required of OSI's stockholders to approve the Merger Agreement and the
Merger; (xxv) board approval of the Merger; (xxvi) accounting matters; (xxvii)
actions that would affect qualification of the Merger as a tax-free
reorganization; and (xxviii) the accuracy of the Merger Agreement, its exhibits
and schedules, an OSI letter containing additional disclosure, certificates to
be delivered by OSI to HNC, and the information supplied or to be supplied by or
on behalf of OSI for inclusion or incorporation by reference in the Registration
Statement and/or this Proxy Statement/Prospectus.

           Under the Merger Agreement, HNC and Merger Sub have also made various
representations and warranties to OSI regarding their businesses, including
representations and warranties regarding: (i) their corporate good standing;
(ii) due authorization of the Merger Agreement and transactions contemplated
thereby; (iii) capitalization, including outstanding stock and stock options;
(iv) no conflict with charter documents, corporate documents and certain other



                                       48
<PAGE>   58

agreements; (v) brokers or finders; (vi) absence of litigation; (vii) actions
that would effect qualification of the Merger as a tax-free reorganization; and
(viii) no material adverse change. Under the Merger Agreement, HNC has also made
representations and warranties to OSI regarding: (i) filings with the Commission
and (ii) validity of shares to be issued in the Merger.

CONDUCT OF BUSINESS PENDING THE MERGER

           Until the earlier of the consummation of the Merger or the
termination of the Merger Agreement in accordance with its terms, OSI has agreed
to advise HNC promptly in writing (i) of any event that would render any
representation or warranty of OSI contained in the Merger Agreement, if made on
or as of the date of such event or the Closing Date, untrue or inaccurate in any
material respect and (ii) of any material adverse change in OSI's business,
results of operations, or financial condition. OSI has also agreed that it will
carry on and preserve its business and its relationships with customers,
suppliers, employees and others in substantially the same manner as it has prior
to the date of the Merger Agreement and will promptly bring to the attention of
HNC in writing any material deterioration in its relationship with any key
customer, key supplier or key employee. Until the earlier of the Effective Time
or the termination of the Merger Agreement, HNC has agreed to advise OSI
promptly in writing of any event that would render any representation or
warranty of HNC contained in the Merger Agreement, if made on or as of the date
of such event or the Closing Date, untrue or inaccurate in any material respect.

           Further, OSI has agreed it will continue to conduct its business and
maintain its business relationships in the ordinary and usual course and that
neither OSI nor any of its subsidiaries will, without the prior written consent
of the President or Chief Financial Officer of HNC, take certain actions,
including but not limited to the following: (i) borrow or lend any money, other
than certain reasonable and ordinary employee expense advances; (ii) enter into
any transaction or agreement not in the ordinary course of OSI's business; (iii)
grant any lien or other encumbrance on any of OSI's assets; (iv) sell, transfer
or dispose of any of OSI's assets except in the ordinary course of OSI's
business; (v) enter into any material lease or contract for the purchase or sale
of any property, whether real or personal, tangible or intangible; (vi) pay any
bonus, increased salary or special remuneration to any officer, director,
employee or consultant (except for certain normal salary increases and bonus
payments consistent with OSI's past practices), enter into any new employment or
consulting agreement with any such person, or enter into any indemnification
agreement or agreements to advance expenses of defending any claim, suit or
proceeding with any such person; (vii) declare, set aside or pay any cash or
stock dividend or other distribution in respect of its capital stock, redeem,
repurchase or otherwise acquire any of its capital stock or other securities,
pay or distribute any cash or property to any stockholder or securityholder of
OSI or make any other cash payment to any stockholder or securityholder of OSI
that is unusual, or not made in the ordinary course of OSI's business consistent
with its past practices; (viii) amend or terminate any contract, agreement or
license to which OSI or any of its subsidiaries is a party except for certain
contracts amended or terminated in the ordinary course of OSI's business or
contracts that would not, if so amended or terminated, have any material impact
on OSI's business or financial condition; (ix) guarantee or act as a surety for
any obligation of any third party; (x) issue, sell, create or authorize any
shares of its capital stock of any class or series or any other of its
securities, any warrants, obligations, subscriptions, options, convertible
securities, or other commitments to issue shares of its capital stock or
securities exchangeable for, or convertible into, shares of its capital stock,
except that OSI may issue shares of OSI Common Stock issuable upon the exercise
of OSI Options that were outstanding on September 16, 1998 (the date of the
Merger Agreement), in accordance with their terms as now in effect and may grant
stock options under the OSI 1994 Option Plan (but not under the OSI 1998 Stock
Incentive Plan) in the ordinary course of OSI's business to OSI employees and
consultants in amounts, at exercise prices and on such terms and to such
persons, as are consistent with OSI's past practices; (xi) split or reverse
split the outstanding shares of its capital stock of any class or series or
enter into any recapitalization affecting the number of outstanding shares of
its capital stock of any class or series or affecting any other of its
securities; (xii) merge, consolidate or reorganize with, or acquire, or enter
into any other business combination with, any corporation, partnership, limited
liability company or any other entity or enter into any negotiations,
discussions or agreement for such purpose; (xiii) amend its Certificate of
Incorporation or Bylaws; (xiv) license any of its technology or intellectual
property rights except for licenses of products made in the ordinary course of
OSI's business, or acquire any intellectual property rights (or any license
thereto) from any third party except for any such license obtained in the
ordinary course of OSI's business; (xv) modify or change the exercise or
conversion rights or exercise or purchase prices of any capital stock of OSI,
any OSI stock options, warrants or other OSI securities, or accelerate or
otherwise modify the right to exercise any option, warrant or other right to
purchase any capital stock or other securities of OSI or accelerate or otherwise
modify the vesting or release of, any shares of capital stock or other
securities of OSI from any repurchase options or rights of refusal held by OSI
or any other party or any other restrictions unless such
accelerations/modifications are expressly required and mandated by the terms of
a formal written agreement or plan that was entered into prior to the execution
of the Merger 



                                       49
<PAGE>   59

Agreement and not in contemplation of the Merger or other transactions
contemplated by the Merger Agreement; (xvi) purchase or otherwise acquire, or
sell or otherwise dispose of any shares of HNC Common Stock, other HNC
securities or any securities whose value is derived from or determined with
reference to, in whole or in part, the value of HNC Common Stock or other HNC
securities; and (xvii) agree to do any of the above.

           OSI has made additional covenants, including covenants relating to:
(i) the submission of the Merger and related agreements or transactions for
approval by the OSI stockholders; (ii) the preparation of this Proxy
Statement/Prospectus and other necessary documents and securities and regulatory
filings; (iii) obtaining third party consents; (iv) giving HNC notice of
litigation; (v) providing HNC with access to OSI's business and financial
information; (vi) taking efforts to cause satisfaction of conditions precedent
to the Merger; (vii) identifying of OSI's affiliates; (viii) accounting for the
Merger as a pooling of interests; (ix) certain HNC-related investments and
agreements; (x) identifying holders of OSI dissenting shares; (xi) termination
of registration and voting rights; (xii) securing invention assignment and
confidentiality agreements; (xiii) OSI employee option and benefit plans; (xiv)
encouraging the exercise of warrants; (xv) closing of the Merger; and (xvi)
actions that would affect qualification of the Merger as a tax-free
reorganization.

NON-SOLICITATION

           Pursuant to the Merger Agreement, OSI has agreed that, until the
earlier of the consummation of the Merger or the termination of the Merger
Agreement in accordance with its terms, OSI will not, and will not authorize,
encourage or permit any officer, director, employee, stockholder, affiliate or
agent of OSI or any other person on OSI's or their behalf to, directly or
indirectly: (i) solicit, initiate, encourage or induce the making, submission or
announcement of, any offer or proposal from any party concerning any Alternative
Transaction (as defined below) or take any other action that could reasonably be
expected to lead to an Alternative Transaction or a proposal therefor; (ii)
consider any inquiry, offer or proposal received from any party concerning any
Alternative Transaction; (iii) furnish any information regarding OSI to any
person or entity in connection with or in response to any inquiry, offer or
proposal for or regarding any Alternative Transaction; (iv) participate in any
discussions or negotiations with any person or entity with respect to any
Alternative Transaction; (v) otherwise cooperate with, facilitate or encourage
any effort or attempt by any person or entity (other than HNC) to effect any
Alternative Transaction; or (vi) execute, enter into or become bound by any
letter of intent, agreement, commitment or understanding between OSI and any
third party that is related to, provides for or concerns any Alternative
Transaction. Until the earlier of the Effective Time or the termination of the
Merger Agreement, OSI will promptly disclose to HNC any inquiries or proposals
for Alternative Transactions received by OSI from any third parties, which
disclosure shall include the identity of the party making the inquiry or
proposal and the terms of the proposal. The term "Alternative Transaction" means
(i) any commitment, agreement or transaction involving or providing for the
possible disposition of all or any substantial portion of OSI's business, assets
or capital stock, whether by way of merger, consolidation, sale of assets, sale
of stock, tender offer and/or any other form of business combination or (ii) any
initial public offering of capital stock or other securities of OSI pursuant to
a registration statement filed under the Securities Act.

CONDITIONS TO THE MERGER

           The obligations of OSI under the Merger Agreement to effect the
Merger are subject to the fulfillment or satisfaction, on and as of the Closing,
of a number of conditions, including the following: (i) the representations and
warranties of HNC and Merger Sub in the Merger Agreement (as qualified in a
separate disclosure letter from HNC to OSI) being true and accurate on and as of
the Closing with the same force and effect as if they had been made at the
Closing Date (except for representations or warranties made as of a specified
date, which need be true and accurate only as of such date); (ii) HNC shall have
performed and complied in all material respects with all of its covenants
contained in Article 6 of the Merger Agreement; (iii) the principal terms of the
Merger Agreement and the Merger shall have been duly and validly approved and
adopted by OSI's stockholders and the HNC Board; (iv) the principal terms of the
Merger shall have been approved and adopted by Merger Sub's Board of Directors
and HNC, as Merger Sub's sole stockholder; (v) no litigation or proceeding shall
be threatened or pending for the purpose or with the probable effect of
enjoining or preventing the Merger or any of the other material transactions
contemplated by the Merger Agreement, and there shall not be issued, enacted or
adopted, or threatened in writing by any governmental authority, any order,
decree, temporary, preliminary or permanent injunction, legislative enactment,
statute, regulation, action or proceeding, or any judgment or ruling by any
court, arbitrator, governmental authority or any other fact or circumstance,
that, directly or indirectly, challenges, threatens, prohibits, enjoins,
restrains, suspends, delays, conditions or renders illegal or imposes
limitations on (or involves a challenge, threat to, or a prohibition,
injunction, restraint, suspension, delay or illegality of, or to impose
limitations on) the Merger or any other material transaction contemplated by the
Merger Agreement; (vi) there shall have been obtained at or prior to the Closing
Date such permits or authorizations, and there shall have been taken all such
other actions by any 



                                       50
<PAGE>   60

   
regulatory authority having jurisdiction, as may be required to lawfully
consummate the Merger; (vii) all applicable waiting periods under the HSR Act
shall have expired or early termination of such waiting periods shall have been
granted; (viii) the Registration Statement shall have been declared effective by
the Commission and no stop order affecting the issuance of the shares of HNC
Common Stock or HNC Options in the Merger shall be in effect; (ix) OSI shall
have received an opinion from HNC's counsel as to certain matters; (x) the
shares of HNC Common Stock issuable in the Merger and the shares of HNC Common
Stock issuable upon the exercise of HNC Options issued in the Merger shall be
authorized for listing on the Nasdaq Stock Market, subject to official notice of
issuance; and (xi) there shall not have been any material adverse change in the
financial condition, properties, assets, liabilities, business, results of
operations or operations of HNC and its subsidiaries, taken as a whole, except
that (A) a change arising or resulting, directly or indirectly, from general
industry, economic or stock market conditions, (B) a change that is proximately
caused by the public announcement of, and the response or reaction of customers,
vendors, licensors, investors or employees of HNC to, the Merger Agreement, the
Merger or any of the transactions contemplated by the Merger Agreement and (C) a
decrease in the market price of HNC Common Stock, by itself, will not be
considered such a material adverse change.
    

   
           The obligations of HNC under the Merger Agreement to effect the
Merger are subject to the fulfillment or satisfaction, on and as of the Closing,
of a number of conditions, including the following: (i) the representations and
warranties of OSI in the Merger Agreement (as qualified in a separate disclosure
letter from OSI to HNC) that are qualified as to materiality shall be true and
correct, and those that are not qualified as to materiality shall be true and
correct in all material respects, in each case, on and as of the Closing) with
the same force and effect as if they had been made at the Closing Date (except
for any such representations or warranties made as of a specified date, which
need be true and accurate only as of such date); (ii) OSI shall have performed
and complied in all material respects with all of its covenants contained in
Article 5 of the Merger Agreement; (iii) there shall not have been any material
adverse change in the financial condition, properties, assets, liabilities,
business, results of operations or operations of OSI and its subsidiaries, taken
as a whole, except that (A) a change arising or resulting, directly or
indirectly, from general industry, economic or stock market conditions and (B) a
change that is proximately caused by the public announcement of, and the
response or reaction of customers, vendors, licensors, investors or employees of
OSI to, the Merger Agreement, the Merger or any of the transactions contemplated
by the Merger Agreement, will not be considered such a material adverse change;
(iv) there shall not be any outstanding or threatened, or enacted or adopted,
any order, decree, temporary, preliminary or permanent injunction, legislative
enactment, statute, regulation, action, proceeding or any judgment or ruling by
any court, arbitrator, governmental agency, authority or entity, or any other
fact or circumstance, that, directly or indirectly, challenges, threatens,
prohibits, enjoins, restrains, suspends, delays, conditions, or renders illegal
or imposes limitations on (or is likely to result in a challenge, threat to, or
a prohibition, injunction, restraint, suspension, delay or illegality of, or to
impose limitations on) the Merger or any other material transaction contemplated
by the Merger Agreement or any related agreement; (v) no litigation or
proceeding shall be threatened or pending for the purpose or with the probable
effect of enjoining or preventing any of the transactions contemplated by the
Merger Agreement, or which could be reasonably expected to have a material
adverse effect on OSI; (vi) there shall have been obtained at or prior to the
Closing Date such permits or authorizations, and there shall have been taken all
such other actions by any regulatory authority having jurisdiction, as may be
required to lawfully consummate the Merger; (vii) all applicable waiting periods
under the HSR Act shall have expired or early termination of such waiting
periods shall have been granted; (viii) HNC shall have received an opinion from
OSI's counsel as to certain matters; (ix) HNC shall have received duly executed
copies of all material third-party consents, approvals, assignments, waivers,
authorizations or other certificates contemplated by the Merger Agreement to
provide for the continuation in full force and effect of any and all material
contracts, agreements and leases of OSI and its subsidiaries after the Merger
and the preservation of OSI's intellectual property rights and other assets and
properties after the Merger and for HNC to consummate the Merger and the other
transactions contemplated by the Merger Agreement and related agreements; (x)
the principal terms of the Merger Agreement, the Merger and the related
agreements shall have been duly and validly approved and adopted by the OSI
Board and the valid and affirmative vote of OSI's stockholders, as described in
the Merger Agreement and required by the DGCL and OSI's Certificate of
Incorporation and Bylaws; (xi) the number of the outstanding shares of OSI
Common Stock and OSI Preferred Stock (if any) that have not affirmatively voted
in favor of the Merger and are eligible to exercise or perfect any statutory
appraisal rights of dissenting stockholders under applicable law will not exceed
5% of the shares of OSI Common Stock outstanding on the Record Date (computed
assuming full conversion of the OSI Preferred Stock into OSI Common Stock on
such Record Date); (xii) each director, executive officer and 10% or greater
stockholder of OSI and each affiliate of OSI who is to receive HNC Common Stock
in the Merger will have executed and delivered to HNC an OSI Affiliate Agreement
agreeing to certain covenants regarding the disposition of OSI securities and
HNC securities; (xiii) HNC shall have received from each of Douglas K. Anderson,
Graham H. Gurney, John L. Person, Clifford I. Waggoner and Richard J. Willemin
fully executed Non-Competition Agreements; (xiv) HNC shall have received a fully
executed Escrow Agreement; (xv) the Registration Statement shall have been
declared effective by the Commission and no stop order 
    



                                       51
<PAGE>   61
   
affecting the issuance of the shares of HNC Common Stock or HNC Options in the
Merger shall be in effect; (xvi) each of Douglas K. Anderson and John L. Person
shall have continued to be full-time employees of OSI prior to and through the
Effective Time and shall have accepted offers of continued at will employment
with OSI following the Effective Time, pursuant to written offer letters in
which such persons commit to continue to be full-time employees for two years
after the Effective Time; (xvii) the directors of OSI in office immediately
prior to the Effective Time of the Merger (other than such director designated
in the Merger Agreement to be a director of OSI immediately after the Effective
Time) shall have resigned as directors of the Surviving Corporation in writing
effective as of the Effective Time; (xviii) HNC shall have been advised in
writing, as of the Effective Time, by its independent accountants,
PricewaterhouseCoopers LLP, that, subject to customary qualifications, they
concur with HNC management's conclusion that no conditions exist that would
preclude HNC from accounting for the Merger as a pooling of interests, and OSI
will have been advised in writing, as of the Effective Time, by its independent
accountants, PricewaterhouseCoopers LLP, that, subject to customary
qualifications, they concur with management's conclusion that no conditions
exist that would preclude OSI from being a party to a business combination for
which the pooling of interests method of accounting would be available; (xix)
OSI's warrants and other securities (other than the OSI Options or OSI Preferred
Stock), will have been exercised in full in accordance with their current terms
and conditions, so that no OSI securities, other than OSI Options, OSI Common
Stock and OSI Preferred Stock, will be outstanding immediately prior to the
Effective Time; (xx) each of BISYS Group and COCC shall have executed and
delivered to OSI a written release and waiver agreement, waiving and terminating
certain rights; and (xxi) certain investors of OSI shall have executed and
delivered to OSI written agreements confirming the waiver and/or termination of
certain of their rights upon consummation of the Merger under their agreements
with OSI.
    

TERMINATION, AMENDMENT AND WAIVER
   
           The Merger Agreement may be terminated at any time prior to the
Effective Time by the mutual written consent of HNC and OSI. In addition, either
HNC or OSI, by giving written notice to the other, may terminate the Merger
Agreement (i) if a court of competent jurisdiction or other governmental
authority shall have issued a nonappealable final order, decree or ruling or
taken any other action, in each case having the effect of permanently
restraining, enjoining or otherwise prohibiting the Merger; or (ii) if the
Merger shall not have been consummated by midnight Pacific time on March 31,
1999, provided that the right to terminate the Merger Agreement pursuant to the
provision described in this clause (ii) will not be available to any party whose
failure to perform in any material respect any of its obligations under the
Merger Agreement results in the failure of any condition set forth in the Merger
Agreement or if the failure of such condition results from facts or
circumstances that constitute a material breach of a representation or warranty
made under the Merger Agreement by such party, if the other party has performed
in all material respects its obligations under the Merger Agreement and the
representations and warranties of such other party to the Merger Agreement are
true and correct in all material respects as of the Termination Date. Further,
either HNC or OSI may terminate the Merger Agreement at any time prior to the
Closing if the other has committed (or, in the case of a termination by OSI,
Merger Sub has committed) a material breach of (i) any of its representations
and warranties under the Merger Agreement; or (ii) any of its covenants under
the Merger Agreement, and has not cured such material breach within 30 days
after the party seeking to terminate the Merger Agreement has given the other
party written notice of the material breach and its intention to terminate the
Merger Agreement. Termination of the Merger Agreement by a party (the
"Terminating Party") in accordance with the Merger Agreement shall not give rise
to any obligation or liability on the part of the Terminating Party on account
of such termination, except to the extent otherwise expressly provided in the
Merger Agreement.
    
           Any term or provision of the Merger Agreement may be amended, and the
observance of any term of the Merger Agreement may be waived, only by a writing
signed by the party to be bound thereby. The waiver by a party of any breach of
the Merger Agreement or default in the performance of the Merger Agreement will
not be deemed to constitute a waiver of any other default or any succeeding
breach or default. The Merger Agreement may be amended by the parties at any
time before or after approval of the Merger Agreement by the stockholders of
OSI, but, after such approval, no amendment 


                                       52
<PAGE>   62

will be made which by applicable law requires the further approval of the
stockholders of OSI without obtaining such further approval. At any time prior
to the Effective Time, each of OSI and HNC, by action taken by its Board of
Directors, may, to the extent legally allowed: (i) extend the time for the
performance of any of the obligations or other acts of the other; (ii) waive any
inaccuracies in the representations and warranties made to it in the Merger
Agreement or any document delivered pursuant thereto; and (iii) waive compliance
with any of the agreements or conditions for its benefit in the Merger
Agreement. No such waiver or extension will be effective unless signed in
writing by the party against whom such waiver or extension is asserted. The
failure of any party to enforce any of the provisions of the Merger Agreement
will not be construed to be a waiver of the right of such party thereafter to
enforce such provisions.

LIQUIDATED DAMAGES

   
           Under the Merger Agreement, both HNC and OSI have agreed to
consummate the Merger if all the conditions precedent to such party's
obligations to consummate the Merger under the Merger Agreement have been
satisfied or waived prior to the Termination Date and the other party elects to
consummate the Merger. Under the Merger Agreement, HNC has agreed with OSI that
if (a) HNC breaches the above-mentioned covenant and refuses to consummate the
Merger, or (b) HNC does not consummate the Merger and terminates the Merger
Agreement solely due to OSI's failure to satisfy, by the Termination Date,
certain closing conditions related to obtaining certain confirmations, releases
and waivers from several OSI stockholders of certain rights under investors'
rights agreements OSI entered into with such stockholders in connection with
their investments in OSI stock, then HNC will: (a) if requested to do so by OSI
within 30 days after such a termination of the Merger Agreement by HNC, purchase
625,000 shares of OSI Common Stock at a price of $8.00 per share for cash on
certain terms (which include giving HNC the right to elect one representative to
the OSI Board and granting HNC certain registration rights), and (b) if
requested to do so by OSI within 30 days after such a termination of the Merger
Agreement by HNC, lend OSI the principal sum of $5 million, or such lesser sum
as OSI may request (which loan would mature no later than one year after it was
advanced, would be secured by OSI's assets and would bear interest at 2% above
the prime rate charged by a designated national bank). The above-described
equity investment in and/or loan to OSI by HNC would constitute liquidated
damages and OSI's sole and exclusive right and remedy for any breach by HNC of
its obligations under the above-mentioned covenant of the Merger Agreement or
any failure by HNC to consummate the Merger for any of the reasons described
above in this paragraph.
    

INDEMNIFICATION AND ESCROW

   
           In connection with the Merger, HNC, Douglas K. Anderson, as the
Representative and State Street Bank and Trust Company of California, N.A. or a
similar institution, as the Escrow Agent will enter into the Escrow Agreement.
Pursuant to the Escrow Agreement, upon the Closing of the Merger, HNC will
withhold 5% of the shares of HNC Common Stock to be issued to OSI stockholders
in the Merger (the "Escrow Shares") and will deliver certificates representing
such Escrow Shares to the Escrow Agent, together with related stock transfer
powers, to be held by the Escrow Agent as security for the OSI stockholders'
indemnification obligations under the Merger Agreement and the Escrow Agreement.
Pursuant to these indemnification obligations, the OSI stockholders will
indemnify and hold harmless HNC and the Surviving Corporation and their
respective officers, directors, agents, stockholders and employees, and each
person, if any, who controls or may control HNC or the Surviving Corporation
("Indemnified Persons") from and against any and all claims, demands, suits,
actions, causes of actions, losses, costs, damages, liabilities and expenses
including, without limitation, reasonable attorneys' fees, other professionals'
and experts' reasonable fees and court or arbitration costs ("Damages") directly
or indirectly incurred, resulting or and arising out of: (i) any inaccuracy,
misrepresentation, breach of, or default in, any of the representations,
warranties or covenants given or made by OSI in the Merger Agreement or in the
related documents and certificates delivered pursuant to the Merger Agreement;
(ii) any failure of any information pertaining to OSI and contained in the
Registration Statement or this Prospectus/Proxy Statement to be true, correct
and complete; or (iii) any legal, auditors', investment bankers' and financial
advisors' fees and other expenses incurred by OSI with respect to the Merger
Agreement, the Merger and the transactions contemplated thereby in excess of
$2,200,000 ("Excess Transaction Expenses"). Such Damages do not include any
overhead costs of HNC personnel not involving out-of-pocket expense and the
amount of Damages incurred by an Indemnified Person will be reduced dollar for
dollar by the amount of any insurance proceeds actually received by HNC (or any
subsidiary of HNC) on account of such Damages and the amount of U.S. federal or
state tax savings that have been demonstrated to be actually recognized or
recognizable by HNC for tax periods beginning on or after the Effective Time and
that are directly attributable to Damages otherwise recoverable under the Merger
Agreement. With the exception of OSI's obligations for Excess Transaction
Expenses, the indemnification obligations will not apply unless and until the
aggregate Damages exceeds a cumulative aggregate of $250,000, in which event OSI
stockholders will be liable to indemnify for all Damages 
    



                                       53
<PAGE>   63
   
(inclusive of the first $250,000 of Damages). Satisfaction of the
indemnification obligations of the holders of OSI Common Stock and OSI Preferred
Stock will be effected solely by the forfeiture of the Escrow Shares and any
other assets deposited in escrow pursuant to the Escrow Agreement. However,
these limitations do not restrict HNC's rights against (i) any person (including
any OSI stockholder) with respect to any fraudulent conduct or any fraudulent
misrepresentations or omission by such person or (ii) any OSI stockholder, with
respect to any failure of such OSI stockholder to have good, valid and
marketable title to any issued and outstanding shares of OSI Common Stock or OSI
Preferred Stock held (or asserted to have been held) by such OSI stockholder,
free and clear of all liens, claims and encumbrances, or to have the full right,
capacity and authority to vote such person's shares of stock of OSI stock in
favor of the Merger and any other transaction contemplated by the Merger
Agreement. The Escrow Shares will be held by the Escrow Agent until the first
anniversary of the Effective Time (the "Escrow Release Date"). OSI stockholders
may be required to submit an IRS Form W-9 or W-8 backup withholding statement to
the Escrow Agent in order to have their shares of HNC Common Stock released from
escrow upon its expiration. Within seven business days after the Escrow Release
Date, the Escrow Agent will release from escrow for delivery to each former OSI
stockholder the certificates representing such holder's Escrow Shares minus (i)
any Escrow Shares delivered to HNC in satisfaction of claims for Damages and
minus (ii) any Escrow Shares that may be subject to delivery to HNC with respect
to any then pending but unresolved claims for Damages. Any Escrow Shares held as
a result of pending but unresolved claims for Damages will be released to the
former OSI stockholders or released to HNC for cancellation, as the case may be,
within seven business days after resolution of each specific claim involved. If
the Representative contests a claim for Damages, such contested claim will be
resolved either by settlement or binding arbitration.
    


RELATED AGREEMENTS

   
           OSI Affiliate Agreement. To help ensure that the Merger will be
treated as a pooling of interests for accounting and financial reporting
purposes, each person determined by OSI to be an affiliate of OSI shall enter
into an Affiliate Agreement, pursuant to which such stockholder shall agree not
to dispose of, or take any action that would reduce its risk of ownership or
investment in, any securities of HNC (i) during the 30-day period immediately
preceding the Effective Time or (ii) until such time after the Effective Time as
HNC has publicly released a report including the combined financial results of
HNC and OSI for a period of at least 30-days of combined operations of HNC and
OSI after the Merger. OSI will use its diligent efforts to cause each person or
entity who may become an affiliate of OSI to execute and deliver an Affiliate
Agreement to HNC promptly after such person or entity becomes an affiliate of
OSI.
    

   
           Voting Agreement. Pursuant to the Voting Agreements, OSI stockholders
that beneficially own an aggregate of 875,000 shares of OSI Common Stock and
4,747,361 shares of OSI Preferred Stock have agreed (i) not to offer, sell,
transfer or dispose of or encumber any shares of their OSI Common Stock or OSI
Preferred Stock until the Effective Time or the valid termination of the Merger
Agreement in accordance with its terms; (ii) to vote all their shares of OSI
Common Stock or OSI Preferred Stock in favor of the Merger, the Merger Agreement
and the actions contemplated thereby and the actions required in furtherance
thereof; (iii) to vote all their shares of OSI Common Stock or OSI Preferred
Stock against any action or agreement that would result in a breach of any
representation, warranty, covenant or obligation of OSI under the Merger
Agreement or would preclude fulfillment of a condition precedent under the
Merger Agreement to OSI's or HNC's or Merger Sub's obligation to consummate the
Merger; (iv) to vote all their shares of OSI Common Stock or OSI Preferred Stock
against the following actions (other than the Merger and the transactions
contemplated thereby): (A) any Alternative Transaction, (B) any extraordinary
corporate transaction involving OSI or any subsidiary of OSI (such as a merger,
consolidation or other business combination), (C) any sale, lease or transfer of
a material amount of assets of the OSI or any subsidiary of OSI, other than in
the ordinary course of business, (D) any reorganization, recapitalization,
dissolution or liquidation of OSI or any subsidiary of OSI, (E) any change in a
majority of the board of directors of OSI, (F) any amendment to OSI's
Certificate of Incorporation, (G) any material change in the capitalization of
OSI or its corporate structure, (H) a registered public offering of OSI's
capital stock pursuant to a registration statement filed under the Securities
Act, or (I) any other action which is intended, or could be reasonably expected
to, impede interfere with, delay, postpone, discourage or adversely affect the
Merger or any transactions contemplated thereby; (iv) to vote all their shares
of OSI Common Stock or OSI Preferred Stock in favor of the termination,
effective immediately prior to the effectiveness of the Merger, of any rights of
first refusal, rights of notice, rights of co-sale, information rights,
registration rights, preemptive rights or similar rights held by such OSI
stockholders under any agreement, arrangement or understanding with respect to
such OSI stockholder's holdings of OSI Common Stock or OSI Preferred Stock; (v)
not to enter into any agreement or understanding to vote or give instructions in
any manner inconsistent with the terms of the Voting Agreement; (vi) to deliver
irrevocable proxies with respect to those stockholders' holdings of OSI Common
Stock and OSI Preferred Stock; (vii) to take such actions to waive and terminate
all appraisal rights, rights of first refusal, registration rights, and other
similar rights, as well as terminate all agreements under which such rights were
granted; and (viii) not to, nor allow any agent or representative of such
stockholders to, solicit, approve, initiate discussions or take any other action
in opposition to or in competition with the Merger. Holders of a total of
approximately 39.1% and 89.4% of the outstanding shares of OSI Common Stock and
OSI Preferred Stock, respectively, who are or may be affiliates of OSI, have
signed Voting Agreements.
    


                                       54
<PAGE>   64

   
           Non-Competition Agreement. Douglas K. Anderson, Graham H. Gurney,
John L. Person, Clifford I. Waggoner and Richard J. Willemin will enter into
Non-Competition Agreements providing that, for three years following the
Effective Time, they will not directly or indirectly engage in any
business that is competitive with or substantially similar to the business
engaged in by OSI, or presently proposed to be conducted by OSI.
    



                                       55
<PAGE>   65

                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                              FINANCIAL INFORMATION


   
           The following unaudited pro forma consolidated combined financial
information assumes a business combination between HNC and OSI that is accounted
for as a pooling of interests and is based on the companies' respective
historical financial statements and the notes thereto. The unaudited pro forma
consolidated combined balance sheet gives effect to the acquisition of OSI as if
it had occurred on September 30, 1998. The unaudited pro forma consolidated
combined statements of operations give effect to the acquisition of OSI as if it
had occurred at the beginning of the periods presented, combining HNC's
historical results for the nine month periods ended September 30, 1997 and 1998
and each of the three years in the period ended December 31, 1997 with the
corresponding historical OSI results for those respective periods. The pro forma
information does not reflect transaction costs of approximately $4.5 million 
expected to be incurred to complete the Merger.

           The unaudited pro forma consolidated combined information is
presented for illustrative purposes only and is not necessarily indicative of
the operating results or financial position that would have occurred if the
acquisition of OSI had been consummated at the beginning of the earliest period
presented, nor is it necessarily indicative of future operating results or
financial position.
    

           The unaudited pro forma consolidated combined financial information
is based on, and should be read in conjunction with, the historical consolidated
financial statements and the related notes thereto of HNC and the historical
financial statements and the related notes thereto of OSI included elsewhere in
this Proxy Statement/Prospectus.



                                       56
<PAGE>   66

                                HNC SOFTWARE INC.

   
                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                                  BALANCE SHEET
                               SEPTEMBER 30, 1998
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
    

   
<TABLE>
<CAPTION>
                                                                         HISTORICAL                         PRO FORMA (1)
                                                                  ------------------------            -------------------------
                                                                    HNC              OSI     NOTES    ADJUSTMENTS      COMBINED
                                                                  --------         -------   -----    -----------      --------
<S>                                                               <C>              <C>       <C>      <C>              <C>    
                                                                  ASSETS
Current assets:
   Cash and cash equivalents..................................     $40,746          $5,603    (2)      $(4,500)         $41,849
   Investments available for sale.............................      48,725              --                  --           48,725
   Accounts receivable, net...................................      50,391           2,290                  --           52,681
   Current portion of deferred income taxes...................       8,873              --                  --            8,873
   Other current assets.......................................       4,711             505                  --            5,216
                                                                  --------         -------             -------         --------
      Total current assets....................................     153,446           8,398              (4,500)         157,344
    

   
Property and equipment, net...................................      14,597           1,758                  --           16,355
Deferred income taxes, less current portion...................      18,180              --                  --           18,180
Long-term investments available for sale......................      61,125              --                  --           61,125
Other assets..................................................      11,226             589                  --           11,815
                                                                  --------         -------             -------         --------
                                                                  $258,574         $10,745             $(4,500)        $264,819
                                                                  ========         =======             =======         ========
    

       LIABILITIES, MANDATORILY REDEEMABLE CONVERTIBLE PREFERRED STOCK, MINORITY INTEREST AND STOCKHOLDERS' EQUITY (DEFICIT)

   
Current liabilities:
   Accounts payable...........................................      $5,892            $997             $    --           $6,889
   Accrued liabilities........................................       9,567           1,213                  --           10,780
   Deferred revenue...........................................       7,881           2,451                  --           10,332
   Other current liabilities..................................         104              --                  --              104
                                                                   -------          ------             -------          -------
      Total current liabilities...............................      23,444           4,661                  --           28,105

   Convertible Subordinated Notes.............................     100,000              --                  --          100,000
   Other non-current liabilities..............................          30             111                  --              141
                                                                   -------          ------             -------          -------
      Total liabilities.......................................     123,474           4,772                  --          128,246
                                                                   -------          ------             -------          -------

Mandatorily redeemable convertible preferred stock and
   warrants...................................................          --          16,140    (3)      (16,140)              --
Minority interest in consolidated subsidiary..................         157              --                  --              157
                                                                   -------         -------             -------         --------
Stockholders' equity (deficit):
   Preferred stock, $0.01 par value - 1,417 shares
      authorized:  1,417 and 0 shares issued and
      outstanding.............................................          --              14    (3)          (14)              --
   Common stock, $0.01 par value - 19,055 shares
      authorized: 2,236 and 0 shares issued and
      outstanding.............................................          --              22    (3)          (22)              --
   Preferred stock, $0.001 par value - 4,000 shares
      authorized:  no shares issued and outstanding...........          --              --                  --               --
   Common stock, $0.001 par value - 50,000 shares
      authorized: 25,809 and 28,022 shares issued and 
      outstanding.............................................          26              --    (3)            2               28
   Paid-in capital............................................     131,502           4,312    (3)       16,174          151,988
   Accumulated other comprehensive income.....................         (23)             --                  --              (23)
   Retained earnings (accumulated deficit)....................       3,438         (14,515)   (2)       (4,500)         (15,577)
                                                                  --------         -------             -------         --------
Total stockholders' equity (deficit)..........................     134,943         (10,167)             11,640          136,416
                                                                  --------         -------             -------         --------
                                                                  $258,574         $10,745             $(4,500)        $264,819
                                                                  ========         =======             =======         ========
    

</TABLE>


See accompanying notes to unaudited pro forma consolidated combined financial
information.


                                       57
<PAGE>   67

                                HNC SOFTWARE INC.

   
                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                             STATEMENT OF OPERATIONS
                      NINE MONTHS ENDED SEPTEMBER 30, 1998
                      (in thousands, except per share data)
    

   
<TABLE>
<CAPTION>
                                                                     HISTORICAL                                    PRO FORMA (1)
                                                              ---------------------------         
                                                                HNC                 OSI            NOTES           COMBINED
                                                              -------              ------          -----           --------
<S>                                                           <C>                  <C>             <C>             <C>   
Revenues:
   License and maintenance..................................  $97,480              $5,805                         $103,285
   Installation and implementation..........................   10,717               3,196                           13,913
   Contracts and other......................................   11,165                 475                           11,640
   Service bureau...........................................    6,610                  --                            6,610
                                                             --------             -------                         --------
      Total revenues........................................  125,972               9,476                          135,448
                                                             --------             -------                         --------
Operating expenses:
   License and maintenance..................................   22,168               1,685                           23,853
   Installation and implementation..........................    7,692               2,679                           10,371
   Contracts and other......................................    8,437                 689                            9,126
   Service bureau...........................................    4,050                  --                            4,050
   Research and development.................................   23,466               1,564                           25,030
   Sales and marketing......................................   25,245               2,577                           27,822
   Contract termination.....................................       --               1,265                            1,265
   Public offering costs....................................       --               1,055                            1,055
   General and administrative...............................   10,847               2,180                           13,027
   In-process research and development......................   22,783                  --                           22,783
   Acquisition related amortization.........................      906                  --                              906    
                                                             --------             -------                         -------- 
     Total operating expenses..............................   125,594              13,694                          139,288
                                                             --------             -------                         --------
Operating income (loss).....................................      378              (4,218)                          (3,840)

Interest and other income...................................    4,912                 251                            5,163
Interest expense............................................   (3,205)                 (4)                          (3,209)
Minority interest in income of consolidated subsidiary......     (114)                 --                             (114)
                                                             --------             -------                         --------
        Loss before income tax provision....................    1,971              (3,971)                          (2,000)
Income tax provision........................................    6,562                  --                            6,562
                                                             --------             -------                         --------
           Net loss.........................................  $(4,591)            $(3,971)                         $(8,562)
                                                             =========            =======                         ========

Earnings per share:
      Basic net loss per common share.......................   $(0.18)             $(1.80)        (4)               $(0.31)
                                                               ======              ======                           ======
      Diluted net loss per common share.....................   $(0.18)             $(1.80)        (4)               $(0.31)
                                                               ======              ======                           ======

Shares used in computing basic net loss per common share....   25,217               2,207         (4)               27,472
                                                               ======               =====                           ======
Shares used in computing diluted net loss per common share..   25,217               2,207         (4)               27,472
                                                               ======               =====                           ======

</TABLE>
    


See accompanying notes to unaudited pro forma consolidated combined financial
information.


                                       58
<PAGE>   68

                               HNC SOFTWARE INC.

   
                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                             STATEMENT OF OPERATIONS
                      NINE MONTHS ENDED SEPTEMBER 30, 1997
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
    


   
<TABLE>
<CAPTION>
                                                                      HISTORICAL                                    PRO FORMA(1)
                                                                --------------------------                     
                                                                 HNC                 OSI              NOTES         COMBINED
                                                               -------              ------            -----         --------
<S>                                                            <C>                  <C>               <C>           <C>    
Revenues:
   License and maintenance...................................  $64,347              $2,045                          $66,392
   Installation and implementation...........................    7,203               1,159                            8,362
   Contracts and other.......................................    6,202                 105                            6,307
   Service bureau............................................    3,902                  --                            3,902
                                                                 -----               -----                            -----
      Total revenues.........................................   81,654               3,309                           84,963
                                                                ------               -----                           ------

Operating expenses:
   License and maintenance...................................   13,987               1,054                           15,041
   Installation and implementation...........................    3,551               1,649                            5,200
   Contracts and other.......................................    4,415                  55                            4,470
   Service bureau............................................    2,986                  --                            2,986
   Research and development..................................   15,376               1,512                           16,888
   Sales and marketing.......................................   15,477               1,454                           16,931
   General and administrative................................    8,369               1,121                            9,490
                                                                 -----               -----                            -----
      Total operating expenses...............................   64,161               6,845                           71,006
                                                                ------               -----                           ------

Operating income (loss)......................................   17,493              (3,536)                          13,957

Interest and other income....................................    1,511                 128                            1,639
Interest expense.............................................      (63)                 (7)                             (70)
                                                                  ----                 ---                             ----

        Income (loss) before income tax provision............   18,941              (3,415)                          15,526
Income tax provision.........................................    4,643                  --                            4,643
                                                                 -----               -----                            -----
           Net income (loss).................................  $14,298             $(3,415)                         $10,883
                                                               =======             =======                          =======

Earnings per share:
      Basic net income (loss) per common share...............    $0.59              $(1.59)        (4)                $0.42
                                                                 =====              ======                            =====
      Diluted net income (loss) per common share.............    $0.56              $(1.59)        (4)                $0.39
                                                                 =====              ======                            =====

Shares used in computing basic net income (loss)
   per common share..........................................   24,213               2,152         (4)               26,145
                                                                ======               =====                           ======
Shares used in computing diluted net income (loss)
   per common share..........................................   25,574               2,152         (4)               27,701
                                                                ======               =====                           ======

</TABLE>
    


See accompanying notes to unaudited pro forma consolidated combined financial
information.



                                       59
<PAGE>   69


   
                               HNC SOFTWARE INC.
    

                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                             STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1997
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)


   
<TABLE>
<CAPTION>
                                                                      HISTORICAL                                   PRO FORMA (1)
                                                               ---------------------------
                                                                 HNC                 OSI           NOTES           COMBINED
                                                               -------              ------         -----           --------
<S>                                                            <C>                  <C>           <C>             <C>    
Revenues:
   License and maintenance...................................  $89,643              $4,505                          $94,148
   Installation and implementation...........................   10,702               1,959                           12,661
   Contracts and other.......................................    7,772                 185                            7,957
   Service bureau............................................    5,618                  --                            5,618
                                                                 -----               -----                            -----
      Total revenues.........................................  113,735               6,649                          120,384
                                                               -------               -----                          -------

Operating expenses:
   License and maintenance...................................   19,937               1,801                           21,738
   Installation and implementation...........................    5,174               2,416                            7,590
   Contracts and other.......................................    5,438                  93                            5,531
   Service bureau............................................    4,320                  --                            4,320
   Research and development..................................   21,151               1,902                           23,053
   Sales and marketing.......................................   22,049               2,132                           24,181
   General and administrative................................   12,626               1,569                           14,195
                                                                ------               -----                           ------
      Total operating expenses...............................   90,695               9,913                          100,608
                                                                ------               -----                          -------

Operating income (loss)......................................   23,040              (3,264)                          19,776

Interest and other income....................................    2,003                 218                            2,221
Interest expense.............................................      (81)                 (9)                             (90)
Minority interest in income of consolidated subsidiary.......      (43)                 --                              (43)
                                                                 -----               -----                            -----

        Income (loss) before income tax provision............   24,919              (3,055)                          21,864
Income tax provision.........................................    7,354                  --                            7,354
                                                                 -----               -----                            -----
           Net income (loss).................................  $17,565             $(3,055)                         $14,510
                                                               =======             =======                          =======

Earnings per share:
      Basic net income (loss) per common share...............    $0.72              $(1.42)        (4)                $0.55
                                                                 =====              ======                            =====
      Diluted net income (loss) per common share.............    $0.68              $(1.42)        (4)                $0.52
                                                                 =====              ======                            =====

Shares used in computing basic net income (loss)
   per common share..........................................   24,275               2,155         (4)               26,278
                                                                ======               =====                           ======
Shares used in computing diluted net income (loss)
   per common share..........................................   25,681               2,155         (4)               27,939
                                                                ======               =====                           ======

</TABLE>
    



See accompanying notes to unaudited pro forma consolidated combined financial
information.



                                       60
<PAGE>   70


   
                               HNC SOFTWARE INC.
    

                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                             STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1996
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)


   
<TABLE>
<CAPTION>
                                                                   HISTORICAL                                PRO FORMA (1)
                                                          --------------------------- 
                                                             HNC                 OSI         NOTES           COMBINED
                                                          -------               -----        -----           --------
<S>                                                       <C>                   <C>          <C>             <C>    
Revenues:
   License and maintenance..............................  $48,890                $879                          $49,769
   Installation and implementation......................    6,691                 140                            6,831
   Contracts and other..................................   11,128                  --                           11,128
   Service bureau.......................................    4,730                  --                            4,730
                                                            -----               -----                            -----
      Total revenues....................................   71,439               1,019                           72,458
                                                           ------               -----                           ------

Operating expenses:
   License and maintenance..............................   13,725               1,100                           14,825
   Installation and implementation......................    2,714                 937                            3,651
   Contracts and other..................................    7,694                  --                            7,694
   Service bureau.......................................    3,365                  --                            3,365
   Research and development.............................   13,808               1,060                           14,868
   Sales and marketing..................................   11,923               1,051                           12,974
   General and administrative...........................    8,551                 645                            9,196
                                                            -----               -----                            -----
      Total operating expenses..........................   61,780               4,793                           66,573
                                                           ------               -----                           ------

Operating income (loss).................................    9,659              (3,774)                           5,885

Interest and other income...............................    2,178                 139                            2,317
Interest expense........................................     (478)                 (3)                            (481)
                                                             -----              ------                            -----

        Income (loss) before income tax benefit.........   11,359              (3,638)                           7,721
Income tax benefit......................................     (534)                 --                             (534)
                                                             ----               -----                             ----
           Net income (loss)............................  $11,893             $(3,638)                          $8,255
                                                          =======             =======                           ======

Earnings per share:
      Basic net income (loss) per common share..........    $0.50              $(1.73)        (4)                $0.33
                                                            =====              ======                            =====
      Diluted net income (loss) per common share........    $0.47              $(1.73)        (4)                $0.31
                                                            =====              ======                            =====

Shares used in computing basic net income (loss)
   per common share.....................................   23,552               2,103         (4)               25,077
                                                           ======               =====                           ======
Shares used in computing diluted net income (loss)
   per common share.....................................   25,363               2,103         (4)               26,943
                                                           ======               =====                           ======

</TABLE>
    



See accompanying notes to unaudited pro forma consolidated combined financial
information.



                                       61
<PAGE>   71

                                HNC SOFTWARE INC.

                    UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                             STATEMENT OF OPERATIONS
                          YEAR ENDED DECEMBER 31, 1995
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)


   
<TABLE>
<CAPTION>
                                                             HISTORICAL                                   PRO FORMA (1)
                                                      ---------------------------
                                                        HNC                  OSI        NOTES             COMBINED
                                                      -------               -----       -----             --------
<S>                                                   <C>                   <C>         <C>               <C>    
Revenues:
   License and maintenance..........................  $24,561                $220                          $24,781
   Installation and implementation..................    4,648                  48                            4,696
   Contracts and other..............................    9,146                  --                            9,146
   Service bureau...................................    5,349                  --                            5,349
                                                        -----               -----                            -----
      Total revenues................................   43,704                 268                           43,972
                                                       ------               -----                           ------

Operating expenses:
   License and maintenance..........................    7,903                 381                            8,284
   Installation and implementation..................    1,425                 319                            1,744
   Contracts and other..............................    6,894                  --                            6,894
   Service bureau...................................    3,025                  --                            3,025
   Research and development.........................    6,998                 661                            7,659
   Sales and marketing..............................    7,276                 398                            7,674
   General and administrative.......................    5,101                 399                            5,500
                                                        -----               -----                            -----
      Total operating expenses......................   38,622               2,158                           40,780
                                                       ------               -----                           ------

Operating income (loss).............................    5,082              (1,890)                           3,192

Interest and other income...........................      912                  17                              929
Interest expense....................................     (428)                (22)                            (450)
                                                         -----                ----                            ----

        Income (loss) before income tax benefit.....    5,566              (1,895)                           3,671
Income tax benefit..................................     (511)                 --                             (511)
                                                         ----               -----                             ----
           Net income (loss)........................   $6,077             $(1,895)                          $4,182
                                                       ======             =======                           ======

Earnings per share:
      Basic net income (loss) per common share......    $0.38              $(0.98)        (4)                $0.24
                                                        =====              ======                            =====
      Diluted net income (loss) per common share....    $0.28              $(0.98)        (4)                $0.18
                                                        =====              ======                            =====

Shares used in computing basic net income (loss)
   per common share.................................   15,195               1,936         (4)               16,100
                                                       ======               =====                           ======
Shares used in computing diluted net income (loss)
   per common share.................................   21,510               1,936         (4)               22,667
                                                       ======               =====                           ======

</TABLE>
    


See accompanying notes to unaudited pro forma consolidated combined financial
information.



                                       62
<PAGE>   72


                                HNC SOFTWARE INC.

               NOTES TO UNAUDITED PRO FORMA CONSOLIDATED COMBINED
                              FINANCIAL INFORMATION

(1)        The unaudited pro forma consolidated combined financial statements of
           HNC and OSI give retroactive effect to the proposed OSI acquisition
           which will be accounted for as a pooling of interests and, as a
           result, such statements are presented as if the companies had been
           combined for all periods presented.

           There were no material differences between the accounting policies of
           HNC and OSI. Certain amounts have been reclassified to conform to the
           pro forma presentation.

   
(2)        Transaction costs expected to be incurred to complete the Merger
           approximate $4.5 million and consist primarily of investment banking,
           legal and accounting fees, and printing, mailing and registration
           expenses. Due to the non-recurring nature of these costs, they have
           not been reflected in the pro forma statement of operations.
    

(3)        These pro forma adjustments reflect the assumed exchange of all
           outstanding shares of OSI Preferred Stock and OSI Common Stock for an
           aggregate of approximately 2,507,507 shares of HNC Common Stock to
           effect the OSI acquisition.

   
(4)        Pro forma share and per share amounts are based upon weighted average
           options and warrants, using the treasury stock method, and shares
           outstanding during each period. Based on the capitalization of OSI on
           September 16, 1998, and assuming the issuance of options to purchase
           200,000 shares of OSI Common Stock before consummation of the Merger,
           and that all warrants to purchase OSI capital stock that were
           outstanding on September 16, 1998 are exercised in full prior to
           consummation of the Merger, as a result of the Merger, each
           outstanding share of OSI Common Stock will be converted into the
           right to receive 0.23794 shares of HNC Common Stock and each
           outstanding share of OSI Series A-1 Preferred Stock, OSI Series A-2
           Preferred Stock, OSI Series B Preferred Stock, OSI Series C Preferred
           Stock and OSI Series D Preferred Stock will be converted into the
           right to receive 0.27594, 0.31394, 0.31394, 0.35194 and 0.38993
           shares of HNC Common Stock, respectively. In addition, based on the
           same assumptions, each OSI Option will be assumed by HNC and the
           number of shares underlying such options will be converted into an
           option to purchase a number of shares of HNC Common Stock equal to
           the number of shares of OSI Common Stock subject to such OSI Option
           multiplied by 0.23794.
    


                                       63
<PAGE>   73


               HNC SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)


   
           The following selected historical consolidated financial data of HNC
for each of the three years in the period ended December 31, 1997 and as of
December 31, 1996 and 1997 have been derived from the audited HNC historical
consolidated financial statements, and should be read in conjunction with such
financial statements and the notes thereto included elsewhere in this
Registration Statement. The selected historical consolidated financial data for
HNC for the years ended December 31, 1993 and 1994 and as of December 31, 1993,
1994 and 1995 have been derived from audited HNC historical consolidated
financial statements and should be read in conjunction with such financial
statements and the notes thereto, which are on file with the Commission. The
consolidated statement of operations data of HNC for the nine-month periods
ended September 30, 1997 and 1998 and the consolidated balance sheet data of HNC
at September 30, 1998 are unaudited but have been prepared on the same basis as
the audited consolidated financial statements of HNC and, in the opinion of
management of HNC, contain all adjustments, consisting only of normal recurring
adjustments, necessary for a fair presentation of the results of operations for
such periods. The results of operations for the nine-month periods ended
September 30, 1997 and 1998 are not necessarily indicative of results to be
expected for any future periods.
    


   
<TABLE>
<CAPTION>                                                                                                      
                                                                                                    NINE MONTHS ENDED
                                                              YEAR ENDED DECEMBER 31,                 SEPTEMBER 30,
                                                 ------------------------------------------------  ------------------
                                                   1993      1994      1995      1996      1997      1997      1998
                                                 --------  --------  --------  --------  --------  --------  --------
<S>                                              <C>       <C>       <C>       <C>       <C>       <C>       <C>
STATEMENT OF OPERATIONS DATA: (1)
    Total revenues............................   $ 16,167  $ 29,838  $ 43,704  $ 71,439  $113,735  $ 81,654  $125,972
    Operating income..........................      1,034     2,881     5,082     9,659    23,040    17,493       378
    Net income (loss).........................        875     3,142     6,077    11,893    17,565    14,298    (4,591)
    Basic net income (loss) per common
      share(2)(3).............................       0.02      0.28      0.38      0.50      0.72      0.59     (0.18)
    Diluted net income (loss) per common
      share(2)(3).............................       0.02      0.17      0.28      0.47      0.68      0.56     (0.18)
    Shares used in computing basic net........
      income (loss) per common share..........      8,591     8,642    15,195    23,552    24,275    24,213    25,217
    Shares used in computing diluted net......
      income (loss) per common share(4).......      9,289    18,142    21,510    25,363    25,681    25,574    25,217
                                               
</TABLE>
    

   
<TABLE>
<CAPTION>
                                                                                  AS OF DECEMBER 31,                 SEPTEMBER 30,
                                                                  -------------------------------------------------  -------------
                                                                    1993       1994      1995      1996      1997         1998
                                                                  --------   --------  --------  --------  --------  -------------
<S>                                                               <C>        <C>       <C>       <C>       <C>          <C>
BALANCE SHEET DATA:
   Cash, cash equivalents and investments available for sale..    $  4,679   $  7,827  $ 44,975  $ 34,849  $ 42,946     $150,596
   Total assets...............................................      10,944     20,663    63,113    98,293   119,877      258,574
   Long-term obligations, less current portion................       1,470      1,212     1,659       683       239      100,030
   Total stockholders' (deficit) equity.......................      (5,553)       841    50,861    84,970   103,860      134,943
</TABLE>
    

(1)   The selected consolidated financial data gives retroactive effect to the
      acquisitions of Risk Data, Retek and CompReview for all periods presented,
      accounted for as poolings of interests.

   
(2)   The computations for basic net income per common share for 1993, 1994 and
      1995 include reductions of consolidated net income in the amounts of $717,
      $717 and $348, respectively, related to the accretion of dividends on
      mandatorily redeemable convertible Preferred Stock, which converted into
      HNC Common Stock upon the closing of HNC's initial public offering on June
      26, 1995. The computation of diluted net income per common share for 1993
      does not include the assumed conversion of all outstanding shares of
      mandatorily redeemable convertible Preferred Stock into 7,675 shares of
      HNC Common Stock or an increase to net income per common share related to
      the elimination of dividend accretion on such Preferred Stock as the
      impact would be antidilutive.
    

(3)   Prior to the acquisition of CompReview by HNC on November 28, 1997,
      CompReview had elected subchapter S corporation status for income tax
      purposes; therefore, its income was included in the tax returns of its
      stockholders, and no income tax provision was recorded for CompReview
      other than certain minimum state taxes on subchapter S corporations. As a
      result of the acquisition, beginning November 29, 1997, CompReview became
      subject to corporate income taxes on its taxable income.

   
(4)   For the nine month period ended September 30, 1998, common stock
      equivalents of approximately 1,387 shares were not used to calculate
      diluted net loss per share because of their anti-dilutive effect. The
      conversion of HNC's 4.75% Convertible Subordinated Notes for the nine
      month period ended September 30, 1998 of 1,700 shares was not used to
      calculate diluted net loss per share as its effect would be anti-dilutive.
    



                                       64
<PAGE>   74
  HNC SELECTED HISTORICAL CONSOLIDATED QUARTERLY OPERATING RESULTS (UNAUDITED)
                                 (IN THOUSANDS)


   
<TABLE>
<CAPTION>
                                                                                                     NINE MONTHS ENDED
                                               YEAR ENDED DECEMBER 31, 1997 (1)                     SEPTEMBER 30, 1998(1)
                               -----------------------------------------------------------     ----------------------------------
                                FIRST       SECOND        THIRD       FOURTH        TOTAL       FIRST       SECOND         THIRD
                               QUARTER      QUARTER      QUARTER      QUARTER       YEAR       QUARTER      QUARTER       QUARTER
                               -------      -------      -------      -------     --------     -------      -------       -------
<S>                            <C>          <C>          <C>          <C>         <C>          <C>          <C>           <C>
 Revenues...................   $24,072      $27,593      $29,989      $32,081     $113,735     $35,081      $43,141       $47,750

 Operating income (loss) ...     5,120        6,002        6,371        5,547       23,040       2,804      (11,529)        9,103

 Net income (loss) .........     4,212        4,959        5,127        3,267       17,565       2,015      (12,716)        6,110
</TABLE>
    

   
<TABLE>
<CAPTION>
                                                          YEAR ENDED DECEMBER 31, 1996 (1)
                                           ------------------------------------------------------------------
                                              FIRST       SECOND         THIRD         FOURTH         TOTAL
                                             QUARTER      QUARTER       QUARTER        QUARTER        YEAR
                                           ---------     ---------     ---------      ---------     ---------
<S>                                        <C>           <C>           <C>            <C>           <C>      
    Revenues.............................  $  13,877     $  16,697     $  19,115      $  21,750     $  71,439

    Operating income.....................        351         1,801         3,117          4,390         9,659

    Net income...........................        258         1,504         2,984          7,147        11,893

</TABLE>
    

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

(1)   The unaudited selected consolidated quarterly operating results give
      retroactive effect to the acquisitions of Risk Data, Retek and CompReview
      for all periods presented, accounted for as poolings of interests.



                                       65
<PAGE>   75


                    HNC MANAGEMENT'S DISCUSSION AND ANALYSIS
                 OF FINANCIAL CONDITION AND RESULTS OF OPERATION

   
           This Proxy Statement/Prospectus (including without limitation the
following section regarding Management's Discussion and Analysis of Financial
Condition and Results of Operations) contains forward-looking statements
regarding HNC and its business, financial condition, results of operations and
prospects. Words such as "expects," "anticipates," "intends," "plans,"
"believes," "seeks," "estimates" and similar expressions or variations of such
words are intended to identify forward-looking statements, but are not the
exclusive means of identifying forward-looking statements in this Proxy
Statement/Prospectus. Additionally, statements concerning future matters such as
the development of new products, enhancements or technologies, possible changes
in legislation and other statements regarding matters that are not historical
are forward-looking statements.
    

   
           Although forward-looking statements in this Proxy
Statement/Prospectus reflect the good faith judgment of HNC's management, such
statements can only be based on facts and factors currently known by HNC.
Consequently, forward-looking statements are inherently subject to risks and
uncertainties and actual results and outcomes may differ materially from the
results and outcomes discussed in the forward-looking statements. Factors that
could cause or contribute to such differences in results and outcomes include
without limitation those discussed in "Risk Factors" above as well as those
discussed elsewhere in this Proxy Statement/Prospectus. Readers are urged not to
place undue reliance on these forward-looking statements, which speak only as of
the date of this Proxy Statement/Prospectus. HNC undertakes no obligation to
revise or update any forward-looking statements in order to reflect any event or
circumstance that may arise after the date of this Proxy Statement/Prospectus.
Readers are urged to carefully review and consider the various disclosures made
in this Proxy Statement/Prospectus, which attempt to advise interested parties
of the risks and factors that may affect HNC's business, financial condition,
results of operations and prospects.
    

OVERVIEW

           HNC develops, markets and supports predictive software solutions for
leading service industries. These predictive software solutions employ
proprietary neural-network predictive decision engines, profiles, traditional
statistical modeling, business models, expert rules and context vectors to
convert existing data and business experiences into meaningful recommendations
and actions. HNC was founded in 1986 to provide software tools and contracted
technology services using neural-network technology.

   
           In August 1996, HNC completed its acquisition of Risk Data in a
transaction accounted for as a pooling of interests. Risk Data is based in
Irvine, California and develops, markets and supports proprietary software
decision products for use in the insurance industry. In 1996, HNC formed Aptex
Software Inc. ("Aptex"), a majority-owned subsidiary located in San Diego,
California that develops, markets and supports electronic text analysis
technology in products designed for the Internet and other environments. In
November 1996, HNC completed its acquisition of Retek in a transaction accounted
for as a pooling of interests. Retek is based in Minneapolis, Minnesota and
develops, markets and supports management decision software products for
retailers and their vendors. In November 1997, HNC completed its acquisition of
CompReview, in a transaction accounted for as a pooling of interests. CompReview
is located in Costa Mesa, California and develops, markets and supports a
software product and related services designed to assist in the management and
containment of the medical costs of workers' compensation and automobile
accident medical claims. CompReview provides its product and services primarily
to insurance companies, managed care organizations, third party administrators
and large self-insured employers. In March 1998, HNC acquired PCS, a company
that develops, markets and supports fully integrated distribution center
management software products that address the distribution needs of the retail,
manufacturing and wholesale industries. In April 1998, HNC acquired FTI, which
develops and markets profitability measurement and decision support software
products and related support services to banks and other similar financial
institutions. In June 1998, HNC acquired the ATACS product line of Bedford
Associates, Inc., which is a wholly-owned subsidiary of British Airways plc.
ATACS is a fraud management software solution for wireline, wireless and
Internet telecommunication service providers. In June 1998, Risk Data merged
with and into CompReview to form HNC Insurance Solutions. HNC anticipates that
from time to time it will consider acquisitions of other businesses in order to
expand the markets served by HNC and to acquire complementary technologies,
products and personnel. See "Risk Factors--Risks Relating to HNC--Recent and
Future Acquisitions" and "Business of HNC--HNC's Strategy."
    

                                       66
<PAGE>   76

           After giving retroactive effect to HNC's acquisitions of Risk Data,
Retek and CompReview, HNC experienced compound annual growth in total revenues
of 63% from 1993 through 1997. See "Risk Factors--Risks Relating to HNC--Risks
Associated with Managing Growth." This revenue growth resulted primarily from
increased license fees for the Retek Merchandising System, CRLink, Falcon, MIRA
and ProfitMax products and, to a lesser extent, from increased license fees for
the Active Retail Intelligence, Retek Data Warehouse, PMAdvisor, CompCompare,
Capstone and AREAS products. Because of the long sales and development cycle
associated with HNC's products, HNC has not received significant revenues to
date from the SelectCast, SelectProfile, SelectResponse, SelectResource,
VeriComp or PMAdvisor products. See "Risk Factors--Risks Relating to
HNC--Lengthy and Unpredictable Sales Cycle."

   
           HNC markets many of its predictive software solutions as an ongoing
service that includes software licenses, decision model updates, application
consulting and on-line or on-site support and maintenance. HNC's pricing for the
CRLink, Falcon, MIRA, ProfitMax, PMAdvisor, CompCompare and ProviderCompare
products typically includes an annual or monthly usage fee and a one to seven
year contract commitment. In 1995, 1996 and 1997, annual license and maintenance
revenues from these contracts represented 61.2%, 56.1% and 55.2% of HNC's total
revenues, respectively. In the first nine months of 1997 and 1998, annual
license and maintenance revenues from these contracts represented 55.0% and
51.8% of HNC's total revenues, respectively.
    

POTENTIAL FLUCTUATIONS IN OPERATING RESULTS

           HNC's revenues and operating results have varied significantly in the
past and may do so in the future. Factors affecting HNC's revenues and operating
results include: the degree of acceptance of HNC's products by the markets and
industries served by HNC; the historical tendency of HNC to receive, during a
given fiscal period, a small number of relatively large customer orders, such
that failure to recognize revenue from any such order in that fiscal period may
disproportionately and adversely affect HNC's revenues and operating results for
that fiscal period; customer cancellation of long-term contracts that yield
recurring revenues or customers' ceasing their use of HNC products for which HNC
receives recurring, usage-based fees and disputes with customers regarding fees
payable to HNC; the lengthy sales cycle of most of HNC's products; HNC's ability
to successfully and timely develop, introduce and market new products and
product enhancements; the timing of new product announcements and introductions
by HNC and its competitors; changes in the mix of distribution channels; changes
in the level of operating expenses; HNC's ability to achieve progress and
fulfill its obligations under percentage-of-completion contracts; HNC's success
in completing certain pilot installations within contracted fee budgets;
competitive conditions in the industry; domestic and international economic
conditions; and market conditions in HNC's targeted markets. In addition,
license agreements entered into during a quarter may not meet HNC's revenue
recognition criteria, with the result that, even if HNC meets or exceeds its
forecast of aggregate licensing and other contracting activity for a given
fiscal period, it is possible that HNC's revenues for that fiscal period would
not meet expectations. Furthermore, HNC's operating results may be affected by
factors unique to certain of its product lines. For example, although in the
past a large portion of HNC's revenues were derived from contracts providing for
periodic, recurring fees, HNC now derives a substantial and increasing portion
of its revenues from products (particularly products for the retail industry)
priced as "perpetual" license transactions in which HNC receives a one-time
license fee that is recognized upon delivery of the software and acceptance by
the customer. Thus, failure to complete a perpetual license transaction during a
fiscal quarter would have a disproportionate adverse impact on HNC's operating
results for that quarter.

   
           HNC expects that fluctuations in its operating results will continue
for the foreseeable future. Consequently, HNC believes that period-to-period
comparisons of its financial results should not be relied upon as an indication
of future performance. Because HNC's expense levels are based in part on its
expectations regarding future revenues and are fixed to a large extent in the
short term, HNC may be unable to adjust its spending in time to compensate for
any unexpected revenue shortfall. Accordingly, HNC may not be able to maintain
profitability on a quarterly or annual basis in the future. Due to the foregoing
factors, it is possible that in some future quarter HNC's operating results will
be below the expectations of public market analysts and investors. In that
event, the price of HNC Common Stock and, in turn, the price of HNC's 4.75%
Convertible Subordinated Notes due 2003, would likely be materially adversely
affected.
    

RESULTS OF OPERATIONS

   
           Total Revenues. HNC's revenues are comprised of license and
maintenance revenues, installation and implementation revenues, contracts and
other revenues and service bureau revenues. Total revenues increased by 54% from
$81.7 million in the nine months ended September 30, 1997, compared to total
revenues of $126.0 million in the same period in 1998. Total revenues increased
by 63.5% to $71.4 million in 1996 and by 59.2% to $113.7 million in 1997. 
    

                                       67
<PAGE>   77

   
International operations and export sales represented 12.6%, 17.7% and 16.8% of
total revenues in 1995, 1996 and 1997, respectively, and 18.9% and 24.8% of
total revenues in the first nine months of 1997 and 1998, respectively. For the
nine months ended September 30, 1998, approximately 7% of HNC's sales were
denominated in currencies other than HNC's functional currency, which is the US
dollar. These foreign currencies are primarily those of Western Europe, Canada
and Australia. The retail product line currently has more sales in international
markets than the healthcare/insurance and financial services product lines
combined. HNC believes that international sales represent a significant
opportunity for revenue growth and expects international sales to increase as a
percent of total revenue.
    

           License and Maintenance Revenues. HNC's license and maintenance
revenues are derived from annual license fees, monthly license fees, perpetual
license fees and annual maintenance fees. HNC typically licenses many of its
products for an annual or monthly usage fee under long-term contracts that
include software licenses, decision model updates, application consulting, and
on-line or on-site support and maintenance. HNC's revenue from periodic software
license and maintenance agreements is generally recognized ratably over the
respective license or agreement periods. Revenue from certain short-term
periodic software license and maintenance agreements with guaranteed minimum
license fees is recognized as related services are performed. Transactional fees
are recognized as revenue based on system usage or when fees based on system
usage exceed the monthly minimum license fees. Revenue from perpetual licenses
of HNC's software for which there are no significant continuing obligations and
collection of the related receivables is probable is recognized on delivery of
the software and acceptance by the customer.

   
           License and maintenance revenues increased by 51% from $64.3 million
in the nine months ended September 30, 1997, compared to $97.5 million in the
comparable period in 1998. The increase in license and maintenance revenues was
due primarily to the growth of license fee revenues from the financial solutions
segment of approximately $14.3 million and the retail solutions segment of
approximately $11.9 million. The increase in the financial solutions industry
revenue during the nine months ended September 30, 1998 compared to the nine
months ended September 30, 1997, is attributable primarily to an increase in
sales of the Falcon, FTI (the recently acquired company), AREAS and ProfitMax.
The increase in license and maintenance revenues in the retail solutions segment
in the nine months ended September 30, 1998 compared to the nine months ended
September 30, 1997, was primarily due to an increase in sales of the Retek suite
of products. Contributing to the increase in license and maintenance revenues
were increases in the insurance solutions segment of approximately $4.2 million
and license and maintenance revenues in the telecommunications solutions segment
from the recently acquired ATACS product line of approximately $2.2 million.

    

           License and maintenance revenues increased by 99.1% to $48.9 million
in 1996 and by 83.4% to $89.6 million in 1997. The increase from 1995 to 1996
was due primarily to the growth of license fees in all markets, particularly
from the Retek Merchandising System, CRLink and Falcon, and, to a lesser extent,
MIRA and CompCompare. The increase from 1996 to 1997 was due primarily to the
growth of license fee revenues from the Retek Merchandising System and CRLink.
Also contributing to the increase were increased license fees from other retail
products, such as ARI and Retek Data Warehouse, financial services products such
as Falcon, ProfitMax and Capstone, and other healthcare/insurance products, such
as PMAdvisor and MIRA.

           Installation and Implementation Revenues. Revenues from software
installations and implementations are generally recognized as the services are
performed using the percentage of completion method based on costs incurred to
date compared to total estimated costs at completion. Amounts received in
advance of performance under the contracts are recorded as deferred revenue and
are generally recognized within one year from receipt.

   
           Installation and implementation revenues increased by 49% from $7.2
million in the nine months ended September 30, 1997 compared to $10.7 million in
the nine months ended September 30, 1998. The increase in installation and
implementation revenues was due primarily to the financial solutions segment of
approximately $2.4 million and the retail solutions segment of approximately
$900,000. The increase in the financial solutions industry revenue during the
nine months ended September 30, 1998 compared to the nine months ended September
30, 1997, is attributable primarily to an increase in installations of the
Capstone, Falcon and ProfitMax product lines. Installation and implementation
revenues increased by 44.0% to $6.7 million in 1996 and by 59.9% to $10.7
million in 1997. Substantially all of the increase from 1995 to 1996 was due
primarily to growth in the installations of Retek Data Forecasting as this
product moved from development into production. The increase from 1996 to 1997
was due primarily to growth in the installations of Capstone and ProfitMax.
    

           Contracts and Other Revenues. Contracts and other revenues are
derived primarily from new product development contracts with commercial
customers and research contracts with the United States Government. HNC
typically contracts with one or two commercial partners for pilot development
and installation of its new products and with the United States Government for
additional research funds. Revenues from contract services are generally
recognized as the services are performed using the percentage of completion
method based on costs incurred to date compared to total estimated costs at
completion. Revenue from hardware product sales, which is included in contracts
and other revenues, is recognized upon shipment to the customer.

   
           Contracts and other revenues increased by 80% from $6.2 million in
the nine months ended September 30, 1997, compared to $11.2 million for the same
period in 1998. The increase in contracts and other revenues was due primarily
to an increase in consulting contracts with commercial customers of
approximately $4.3 million during the nine months ended September 30, 1998.
Contracts and other revenues increased by 21.7% to $11.1 million in 1996 and
decreased by 30.2% to $7.8 million in 1997. The increase in 1996 was primarily
the result of greater revenues from commercial new product pilot installation
contracts with customers in support of HNC's development of ProfitMax,
SelectCast, Falcon Sentry and Capstone. The decrease in 1997 was primarily the
result of products such as ProfitMax, Retek Data Forecasting and Capstone moving
from development into production.
    

                                       68
<PAGE>   78

           During 1997, HNC had fewer new product development projects and new
product pilot installations than during 1996. There can be no assurance that any
of these product development projects or pilot installations will be successful
or be completed within anticipated time schedules or that the customers who
serve as pilot installation sites will be satisfied with these products or agree
to license them. If HNC's new product development efforts are unsuccessful, are
not completed on a timely basis or are not well received by pilot customers, HNC
may be compelled to delay or discontinue the release of production versions of
these products or bear increased expense to bring these pilot products to
market, either of which would have a material adverse effect on HNC's business,
financial condition and results of operations.

           Service Bureau Revenues. Service bureau revenues are derived from
HNC's service bureau operations, which provide CRLink's functionality to
customers that do not wish to obtain a license, that use this service until they
can implement their own internal CRLink operation or that use this service when
their volumes peak to high levels. Service bureau customers typically subscribe
for services under month-to-month agreements. Service bureau fees are recognized
as revenue when the processing services are performed.

   
           Service bureau revenues increased by 69% from $3.9 million in the
nine months ended September 30, 1997, compared to $6.6 million in the same
period in 1998. This increase was attributable to an increase in the number of
customers utilizing HNC's CRLink service bureau operations. Service bureau
revenues decreased by 11.6% to $4.7 million in 1996 and increased by 18.8% to
$5.6 million in 1997. The decrease in 1996 was primarily a result of the
significant increase in license revenues as HNC's sales efforts were focused on
licensing CRLink to customers rather than marketing service bureau services. The
increase in 1997 was primarily due to an increase in the number of customers
utilizing service bureau operations.
    

           Gross Margin. The following table sets forth the gross margin for
each of HNC's revenue categories for each of the comparison periods.

<TABLE>
<CAPTION>
   
                                                                                    NINE MONTHS
                                        YEAR ENDED DECEMBER 31,                 ENDED SEPTEMBER 30,
                                   --------------------------------           ---------------------- 
                                   1995          1996          1997           1997              1998
                                   ----          ----          ----           ----              ----
<S>                                <C>           <C>          <C>             <C>              <C>  
License and maintenance........... 67.8%         71.9%        77.8%           78.3%            77.3%

Installation and implementation... 69.3          59.4         51.7            50.7             28.2

Contracts and other............... 24.6          30.9         30.0            28.8             24.4

Service bureau.................... 43.4          28.9         23.1            23.5             38.7
</TABLE>
    

   
           License and Maintenance Gross Margin. License and maintenance costs
primarily represent HNC's expenses for personnel engaged in customer support,
travel to customer sites and documentation materials. Gross margins for the nine
months ended September 30, 1997 and 1998 were 78.3% and 77.3%, respectively. The
primary reason for the decrease in gross margins was increased staffing and
associated costs in client services to support an increased volume of business.
HNC's gross margin on license and maintenance revenues was 67.8%, 71.9% and
77.8% in 1995, 1996 and 1997, respectively. In 1996, the improvement in gross
margin was the result of HNC's ability to move from price discounts for early
adopters of its products to full pricing for products sold to subsequent
customers as well as a higher volume of international licenses, which generate
relatively higher margins than domestic operations due, in part, to lower
overhead expenses as a result of less corporate infrastructure. Gross margin
improved in 1997 due primarily to license fees increasing at a higher rate than
the costs associated with providing these licenses. This increase was primarily
attributable to increased pricing producing higher margins in the retail and
healthcare/insurance markets.
    

   
     Installation and Implementation Gross Margin. Installation and
implementation costs consist primarily of personnel-related costs, travel and
equipment. Installation and implementation gross margins for the first nine
months of 1997 and 1998 were 50.7% and 28.2%, respectively. The decrease in
gross margins was a result of a shift in the mix of implementations within the
financial solutions segment due primarily to an increase in Capstone
implementations, which have substantially lower margins than implementations of
the Falcon line of products. HNC's gross margin on installation and
implementation revenues was 69.3%, 59.4% and 51.7% in 1995, 1996 and 1997,
respectively. In 1996, the decrease in the gross margin was due primarily to new
installations of Retek Data Forecasting, which have substantially lower margins
than installations of Falcon products, which represented a majority of
installations in 1995. Gross margin decreased in 
    


                                       69
<PAGE>   79

1997 due primarily to an increase in Capstone implementations, which have
substantially lower margins than implementations of Falcon products.

   
     Contracts and Other Gross Margin. Contracts and other costs consist
primarily of personnel-related costs. Gross margins for the nine months ended
September 30, 1997 and 1998 were 28.8% and 24.4%, respectively. This increase is
attributable to an increase in consulting contracts with commercial customers in
the retail industry. Due to the increase in demand for retail consulting
services, the retail solutions segment utilized a significant amount of contract
labor, which in turn caused a decrease in gross margins. HNC's gross margin on
contracts and other revenues was 24.6%, 30.9% and 30.0% in 1995, 1996 and 1997,
respectively. The improvement in gross margin during 1996 was due primarily to
HNC's increased ability to better price its new pilot projects. The slight
decrease in gross margin for 1997 was due to the decrease in new product
development contracts, while government projects with substantially lower
margins remained relatively constant in absolute dollars.
    

   
     Service Bureau Gross Margin. Service bureau costs consist primarily of the
personnel and facilities costs of operating the service bureaus. Gross margins
for the first nine months of 1997 and 1998 were 23.5% and 38.7%, respectively.
The increase in gross margin was the result of an increased volume of service
bureau customers combined with relatively fixed costs. HNC's gross margin on
service bureau revenues was 43.4%, 28.9% and 23.1% in 1995, 1996 and 1997,
respectively. The decrease in 1996 was a result of the loss of a customer in
early 1996 for which HNC was able to recognize higher than usual margins during
1995. The decrease in 1997 was attributable to an increase in fixed costs and in
labor costs required to support the service bureau business that outpaced the
increase in revenue. This was the result of a more static customer base and
higher fixed costs associated with the infrastructure necessary to run the
service bureau operation.
    

   
     Research and Development Expenses. Research and development expenses
consist primarily of salaries and other personnel-related expenses,
subcontracted development services, depreciation for development equipment and
supplies. Research and development expenses for the first nine months of 1997
were $15.4 million or 19% of total revenues compared to $23.5 million or 19% of
total revenues for the first nine months of 1998. The insurance solutions
segment accounted for approximately $4.4 million of the increase during the nine
months ended September 30, 1998 compared to the nine months ended September 30,
1997. The retail solutions segment accounted for approximately $2.6 million of
the increase during the nine months ended September 30, 1998. The financial
solutions segment accounted for approximately $1.6 million of the increase
during the nine months ended September 30, 1998. The increase in these expenses
in absolute dollars was due primarily to increases in staffing and related costs
to support increased product development activities, primarily related to
enhancements to the insurance solutions and retail solutions products and, to a
lesser extent, the financial solutions products. Research and development
expenses also increased in absolute dollars due to increased efforts required to
support the research and development functions of businesses acquired by HNC in
late fiscal 1997 and in fiscal 1998. Research and development expenses increased
from $7.0 million in 1995 to $13.8 million in 1996 and to $21.2 million in 1997,
representing 16.0%, 19.3% and 18.6% of total revenues in 1995, 1996 and 1997,
respectively. Research and development expenses increased in absolute dollars
due to the development costs associated with new releases of several products in
the retail and financial services product lines. The increased research and
development expenses in absolute dollars and as a percentage of revenues in 1996
was primarily the result of greater staffing to support more new product
development programs, primarily for ProfitMax, Capstone, CompCompare,
ProviderCompare and the Retek Merchandising System. The 1996 costs also included
the initial product development costs of HNC's Aptex business unit, which did
not have a significant impact on revenues. Statement of Financial Accounting
Standards No. 86, "Accounting for the Costs of Computer Software to be Sold,
Leased or Otherwise Marketed," requires capitalization of certain software
development costs subsequent to the establishment of technological feasibility.
Based on HNC's product development process, technological feasibility is not
established until completion of a working model. Costs incurred by HNC between
completion of the working model and the point at which a product is ready for
general release have been insignificant. As a result, no significant software
development costs were capitalized through June 30, 1998. HNC anticipates that
research and development expenses will increase in dollar amount and could
increase as a percentage of total revenues for the foreseeable future.
    
   
    





                                       70
<PAGE>   80
   
     Sales and Marketing Expenses. Sales and marketing expenses consist
primarily of salaries and benefits, commissions, travel, entertainment and
promotional expenses. Sales and marketing expenses were $15.5 million or 19% of
total revenues in the first nine months of 1997 compared to $25.2 million or 20%
of total revenues in the first nine months of 1998. The retail solutions segment
accounted for approximately $4.8 million of the increase during the nine months
ended September 30, 1998 compared to the nine months ended September 30, 1997.
The financial solutions segment accounted for approximately $3.6 million of the
increase during the nine months ended September 30, 1998. The insurance
solutions segment accounted for approximately $800,000 of the increase during
the nine months ended September 30, 1998. The increases in sales and marketing
expenses were due primarily to increases in staffing related to HNC's expansion
of its direct sales and marketing staff, including opening sales offices in
Canada, Germany, South Africa, France and Japan. Contributing to the increases
were increased expenses for trade shows, advertising, corporate marketing
programs and other expenses to support the recently acquired businesses. Sales
and marketing expenses increased from $7.3 million in 1995 to $11.9 million in
1996 and to $22.0 million in 1997, representing 16.6%, 16.7% and 19.4% of total
revenues in 1995, 1996 and 1997, respectively. The increases were primarily a
result of increased staffing as HNC built its direct sales and marketing staff,
opened sales offices in Japan and in several locations in Europe, and increased
expenses for trade shows, advertising and other marketing programs. HNC expects
sales and marketing expenses to continue to increase for the foreseeable future.
Such expenses could also increase as a percentage of total revenues as HNC
continues to develop a direct sales force in Europe and other international
markets, expand its domestic sales and marketing organization and increase the
breadth of its product lines.
    

   
           General and Administrative Expenses. General and administrative
expenses consist primarily of personnel costs for finance, contract
administration, human resources and general management, as well as acquisition,
insurance and professional services expenses. General and administrative
expenses were $8.4 million or 10% of total revenues in the first nine months of
1997, compared to $10.8 million or 9% of total revenues in the first nine months
of 1998. Acquisition related costs of $673,000 and $123,000 were included in
general and administrative expenses in the first nine months of 1998 and in the
first nine months of 1997, respectively. These costs related to the acquisition
of CompReview in November 1997 and the acquisition of PCS in the first quarter
of 1998 and the acquisitions of FTI and ATACS in the second quarter of 1998.
Excluding acquisition costs, the retail solutions segment accounted for
approximately $900,000 of the increase during the nine months ended September
30, 1998 compared to the nine months ended September 30, 1997. Excluding
acquisition costs, the financial solutions segment accounted for approximately
$600,000 of the increase during the nine months ended September 30, 1998. The
increase in absolute dollars was due primarily to increased staffing and related
expenses, including recruiting costs, to support higher levels of sales and
development activity across HNC resulting in part from HNC's recent
acquisitions. The decrease of general and administrative expenses as a
percentage of total revenues was the result of general and administrative
expenses increasing at a lower rate than revenues in the same fiscal periods.
General and administrative expenses increased from $5.1 million in 1995 to $8.6
million in 1996 and to $12.6 million in 1997, representing 11.7%, 10.3% and 9.8%
of total revenues, respectively. General and administrative expenses included
$1.2 million of acquisition expenses related to the acquisitions of Risk Data
and Retek in 1996 and $1.4 million of acquisition expenses primarily related to
the acquisition of CompReview in 1997. Excluding acquisition expenses, general
and administrative expenses were $5.1 million, $7.4 million and $11.2 million in
1995, 1996 and 1997, respectively. The primary reason for these increases in
absolute dollars was increased staffing to support HNC's growth and additional
expenses associated with being a public company.
    

   
        In-process Research and Development Expenses. In connection with the
acquisitions of PCS, FTI and ATACS, acquired in-process research and development
expenses were $22.8 million for the nine months ended September 30, 1998.
    

   
        Practical Control Solutions, Inc. PCS is a worldwide supplier of fully
integrated distribution center management software products that address the
distribution needs of the retail, wholesale and manufacturing industries. PCS'
products may be classified into two categories: Nautilus, an off-the-shelf
warehouse management software system designed with all the tools needed to
control the course of warehouse operations and Nautilus CBT, an operational
tutorial database which guides the user through Nautilus operations. Certain
products were complete in certain areas and under development in others. The
classification of the technology as complete or under development was made in
accordance with the guidelines of Statement of Financial Accounting Standards
No. 86 ("SFAS 86"), Statement of Financial Accounting Standards No. 2 ("SFAS 2")
and Financial Accounting Standards Board Interpretation No. 4 ("FIN4"). At the
time of acquisition, PCS had a number of new software products under
development, including Nautilus Versions 6.0 and 7.0 and Nautilus CBT. Nautilus
Version 6.0 and Nautilus CBT were both nearly complete but had not reached
technological feasibility as of the acquisition date and approximately $280,000
of development costs were assumed to be incurred through to their scheduled
completion in mid-1998. Nautilus 7.0 was in an early stage of development as of
the acquisition date. HNC assumed that it would incur approximately $974,000 of
additional development costs through to technological feasibility, which was
assumed to be in early 1999.
    

   
     All in-process research and development (R&D) projects continue to
progress, in all material respects, consistently with the assumptions that HNC
provided to the independent appraiser for use in the valuation of the in-process
R&D. The inability of HNC to complete this technology within the expected
timeframes could materially impact future revenues and earnings, which could
have a material adverse effect on HNC's business, financial condition and
results of operations. 
    

   
     Financial Technologies, Inc. FTI has been a leading provider of management
accounting software for financial institutions since 1982. Since 1994, FTI has
focused on profitability measurement and other decision support systems. FTI's
products are generally classified into six categories: ProfitVision,
MarketVision, RiskVision, DataVision, Decision Support Products and Financial
Platform Products. FTI had various new products under development in each of
these categories, none of which had reached technological feasibility as of the
acquisition date. The classification of each new technology as complete or under
development was made in accordance with the guidelines of SFAS 86, SFAS 2 and
FIN4. Each new product under development has varying release dates for
completion ranging from July 1998 through December 1999. The valuation was based
on the assumption that the estimated cost to complete all products under
development, measured as of the acquisition date, would be approximately $2.1
million, of which $1.2 million would be incurred through December 1998 and an
additional $900,000 would be incurred during 1999. The valuation approach also
assumed that these products would generate revenues through the year 2002. The
inability of HNC to complete this technology within the expected timeframes 
could materially impact future revenues and earnings, which could have a
material adverse effect on HNC's business, financial condition and results of
operations.
    

   
     In-process research and development projects continue to progress, in all
material respects, consistently with management's original assumptions that were
provided to the independent appraiser and used to value the in-process R&D.    
    

   
     Advanced Telecommunications Abuse Control System. ATACS is a fraud
management software solution for the wireline, wireless and Internet
telecommunication service provider industries. The system detects fraudulent
traffic thereby avoiding significant financial losses to traditional
telecommunication carriers and Internet Service Providers. ATACS' Version 4.2
includes significant enhanced features from its prior version, including new
enhancements to Velocity, Message Handlers and a subsystem to support fraud
detection of on-line transactions. ATACS Version 4.1 was completed and producing
revenues prior to the acquisition date while Version 4.2, which includes new
technology that allows the system to function on three interface platforms, was
under development and had not yet reached technological feasibility as of the
acquisition date. Although Version 4.2 has as its foundation technology from the
completed as well as in-process technology, HNC believes that it will have
changed significantly so as to be considered new research and development
efforts. The classification of each research and development project as complete
or under development was made in accordance with the guidelines of SFAS 86, SFAS
2 and FIN4. The valuation approach assumed that the cost to reach technological
feasibility would be approximately $250,000 and the release would be completed
by July 1998.
    

        In-process research and development projects continue to progress, in
all material respects, consistently with HNC's original assumptions that were
provided to the independent appraiser and used to value the in-process R&D.

   
        Valuation Approach. HNC used an independent appraisal firm to assist it
with its valuation of the fair market value of the purchased assets of PCS, FTI
and ATACS. Fair market value is defined as the estimated amount at which an
asset might be expected to be exchanged between a willing buyer and willing
seller assuming the buyer continues to use the assets in their current
operations. HNC provided assumptions by product line of revenue, cost of
goods sold and operating expense to the appraiser to assist in the valuation.
The appraisal considered three traditional approaches to valuation: the cost
approach, the market approach and the income approach. The incomplete technology
represents a mix of near and mid-term prospects for the business and imparts a
level of uncertainty to its prospects. It is the nature of the business to be
constantly developing new software for future product releases. A reasonable
expectation of return on the incomplete technology would be higher than that of
completed technology due to these inherent risks. As a result, the earnings
associated with incomplete technology were discounted at a rate of 40.0%, 18.0%
and 22.5% for PCS, FTI and ATACS, respectively.
    

   
        Acquisition Related Amortization Expenses. Acquisition related
amortization expenses were $906,000 or 1% of total revenues in the first nine
months of 1998. These expenses represent the amortization of intangible assets
purchased in conjunction with HNC's acquisitions of PCS and FTI and the asset
purchase of ATACS during the first nine months of 1998.
    

   
           Operating Income. The above factors resulted in operating income of
$17.5 million, constituting 21.4% of total revenues in the first nine months of
1997 and operating income of $378,000, constituting 0.3% of total revenues in
the first nine months of 1998. Operating income was $5.1 million, constituting
11.6% of total revenues in 1995, $9.7 million, constituting 13.5% of total
revenues in 1996, and $23.0 million, constituting 20.3% of total revenues in
1997. HNC does not expect that operating income will continue to increase
significantly as a percentage of total revenues.
    

   
           Other Income (Expense) Net. Other income for the first nine months of
1997 was $1.4 million compared to $1.6 million in the first nine months of 1998.
Other income is comprised primarily of interest income earned on cash and
investment balances, net of interest expense related to the 4.75% Convertible
Subordinated Notes due 2003. The increase is the result of increased interest
income related to the increase in investments, partially offset by the interest
expense related to the Notes. Interest and other income, net of interest
expense, increased from $484,000 in 1995 to $1.7 million in 1996 and to $1.9
million in 1997. The increase in 1996 was primarily attributable to increased
interest income in 1996 from higher cash and investment balances, which
consisted primarily of the proceeds from HNC's initial public offering in June
1995 and secondary public offering in December 1995. The increase in 1997 was
primarily due to a decrease in interest expense of approximately $397,000
primarily related to the repayment of Risk Data's bank notes payable during the
third quarter of 1996, offset by a decrease in interest income of approximately
$165,000.
    

   
           Income Tax (Benefit) Provision. The income tax provisions of $4.6
million and $6.6 million during the first nine months of 1997 and 1998,
respectively, are based on management's estimates of the effective tax rates to
be incurred by HNC during those respective full fiscal years. The income tax
provision of $4.6 million during the first nine months of 1997 was lower than
1997 taxes at statutory rates primarily as a result of CompReview's subchapter S
corporation status prior to the acquisition, which resulted in CompReview's tax
liability being borne by its former stockholders. As of the date of the
acquisition, CompReview's tax status was changed to C corporation. In the
future, HNC expects that the effective tax rate will be reflective of the tax
rate of other California-based companies. The income tax provision of $6.6
million for the nine month period ended September 30, 1998 includes the tax
effects of the permanent differences generated by the one-time write-offs of
in-process research and development related to the purchases of both PCS and FTI
during the nine months ended September 30, 1998.
    


                                       71
<PAGE>   81
   
           The income tax benefit of $511,000 in 1995 was primarily attributable
to the recognition of a $2.2 million deferred tax asset based on anticipated
future utilization of all of HNC's remaining net operating loss carryforwards
and research and development credit carryforwards. The income tax benefit of
$534,000 in 1996 was primarily attributable to the recognition of a $2.7 million
deferred tax asset based on anticipated future utilization of all of the
remaining net operating loss carryforwards and research and development credit
carryforwards relating to Risk Data and Retek. That deferred tax asset had
previously been offset by a valuation allowance. Based on HNC's pre-tax income
in the second and third quarters of 1995 and its estimates of future taxable
income, significant growth in backlog and the market acceptance of two new
products introduced in 1995, the Company believed it was more likely than not
that its deferred tax assets would be realized and therefore recorded the full
benefit of its deferred tax assets during the third quarter of 1995. Based on
pre-tax income generated in the third and fourth quarters of fiscal 1996 at both
Risk Data and Retek and estimates of future taxable income, it was management's
assessment that it was more likely than not that HNC would realize the deferred
tax assets in future periods; therefore, HNC released the valuation allowances
provided on the deferred tax assets of these two subsidiaries during the fourth
quarter of 1996. However, if the Company's revenues and operating results fall
below prior levels and expectations, the realizability of the Company's deferred
tax assets may be adversely impacted and this may adversely impact the Company's
financial position and results of operations. The 1997 income tax provision of
$7.4 million, or 29.5% of pre-tax income, was lower than 1997 taxes at statutory
rates primarily as a result of CompReview's subchapter S corporation status
prior to the acquisition, which resulted in most of CompReview's tax liability
being borne by its former stockholders.
    

LIQUIDITY AND CAPITAL RESOURCES

   
           Net cash provided by operating activities during the first nine
months of 1998 was $13.5 million, which primarily represented net income before
non-cash charges for purchased research and development and depreciation and
amortization of approximately $24.0 million, offset in part by an increase in
accounts receivable. Net cash used in investing activities was $96.7 million
during the first nine months of 1998, primarily due to net purchases of
investments of $127.0 million. Net cash provided by financing activities of
$106.0 million during the first nine months of 1998 was primarily related to
proceeds from the issuance of HNC's 4.75% Convertible Subordinated Notes (the
"Notes") due 2003 of $100.0 million issued in conjunction with HNC's debt
offering in March 1998 and net proceeds of $9.7 million from the issuance of HNC
Common Stock. This was partially offset by costs of approximately $2.8 million
related to the issuance of the above-mentioned Notes.
    

           The $21.0 million of net cash provided by operating activities in
1997 represented net income before depreciation and amortization of
approximately $22.4 million, further increased by a decrease in deferred income
taxes of $6.9 million and offset by an increase in accounts receivable of $11.1
million. Net cash used in investing activities was $7.7 million in 1997
primarily due to $9.6 million expended for property and equipment during 1997,
including $6.0 million for computer equipment to support the increased staffing
across HNC, and $1.9 million for furniture and fixtures primarily related to the
relocation of HNC's Minneapolis facility, offset by approximately $1.9 million
of proceeds from sales and maturities of investments available for sale net of
purchases of such investments. Net cash used in financing activities was $3.2
million in 1997 primarily due to $6.8 million in distributions to the former
CompReview stockholders offset by $4.0 million in net proceeds from issuances of
common stock.

   
           At September 30, 1998, HNC had $150.6 million in cash, cash
equivalents and investments available for sale. As of December 31, 1997, HNC had
$42.9 million in cash, cash equivalents and investments. HNC believes that its
current cash, cash equivalents and investments available for sale balances,
borrowings under its credit facility and net cash provided by operating
activities, will be sufficient to meet its working capital and capital
expenditure requirements for at least the next 12 months. HNC expects to invest
approximately $2.0 million in capital assets, including computer equipment and
building improvements throughout the remainder of 1998. Management intends to
invest HNC's cash in excess of current operating requirements in short-term,
interest-bearing, investment-grade securities. A portion of HNC's cash could
also be used to acquire or invest in complementary businesses or products or
otherwise to obtain the right to use complementary technologies or data. The
proceeds from the Notes will be used for general corporate purposes, including
working capital or to acquire complementary businesses, products or
technologies. From time to time, in the ordinary course of business, HNC
evaluates potential acquisitions of such businesses, products, technologies or
data. HNC has no present understandings, commitments or agreements with respect
to any material acquisition of businesses, products, technologies or data, other
than the Merger.
    

   
           The objectives of HNC's investment policy are the safety and
preservation of invested funds and liquidity of investments that is sufficient
to meet cash flow requirements. HNC's policy is to place its cash, cash
equivalents and investments available for sale with high credit quality
financial institutions and commercial companies and government agencies in order
to limit the amount of credit exposure. It is also HNC's policy to maintain
certain concentration limits, to invest only in certain "allowable securities"
as determined by HNC's management and to invest only in securities denominated
in U.S. dollars. HNC's investment portfolio shall not have an average portfolio
maturity of beyond one year and shall maintain certain liquidity positions.
Investments are prohibited in certain industries and speculative activities.
    

YEAR 2000 COMPLIANCE

   
           It is generally anticipated that many organizations will experience
operational difficulties at the beginning of the Year 2000 as a result of the
fact that many currently installed computer systems and software products are
coded to accept only two digit entries in the date code field. Significant
uncertainty exists in the software and other industries concerning the scope and
magnitude of problems associated with the century change. As early as 1997, HNC
had begun the process of planning and updating, in some cases, its earlier
versions of existing software products. More recent versions of these same
products as well as new products were developed with Year 2000 date processing
in mind. To track performance of completing any remaining compliance work as
well as to assess the Year 2000 issue more broadly, HNC developed a Year 2000
project plan.

           HNC initiated a company-wide Year 2000 Project (Y2k Project) during
1998 to more formally monitor compliance of its Year 2000 exposure for each
major business unit and has divided the project into three major sections that
address its critical date sensitive components: software products, information
technology ("IT") infrastructure, and non-IT systems. The Y2k Project consists
of (i) assessing the current state of readiness for all critical components,
(ii) developing project plans that track the status of work performed toward
completing planned solutions and (iii) developing contingency plans.

           In August 1998, IT directors of all significant business units were
asked to inventory all major components and provide the current state of
readiness as well as an indication as to when readiness would otherwise be
expected. In addition, each major business unit was asked to provide project
plan status reports that indicate how compliance would be achieved, as well as
to quantify the extent and timing of the effort and to identify when testing of
the solution would be completed. Finally, each major business unit was asked to
consider various scenarios that might impact successful implementation of their
Year 2000 solutions and to develop alternative or back-up plans to mitigate the
risk of not being ready on time.

           HNC has completed the initial stage of its Y2k Project by taking
inventory of its major software products, identifying the state of readiness for
each and developing project plans for completing and implementing designed
solutions. Based on HNC's assessment to date, HNC believes that the current
version of each of its major software products is Year 2000 compliant. However,
there can be no assurance that all of HNC's customers will install the Year 2000
compliant version of HNC's products in a timely manner, which could lead to
failure of customer systems and product liability claims against HNC.

           HNC also expects to complete its review of the remaining major
components of its IT infrastructure, such as its applications developed in-house
or purchased from a supplier, by the end of 1998.

           HNC is reviewing its major non-IT system components for Year 2000
compliance and intends to take appropriate action based on the results of such
review. Non-IT systems include hardware and other electronic systems, excluding
application systems, used in the operation of HNC's business. The assessment and
project plans of non-IT Year 2000 solutions are currently expected to be
available by the end of 1998.

           HNC's plan for the Year 2000 calls for compliance verification of
third parties that supply software and information systems to HNC for both IT
and non-IT systems and communication with significant suppliers to determine the
readiness of third parties' remediation of their own Year 2000 issues. As part
of its assessment, HNC is evaluating the level of validation it will require of
third parties to ensure their Year 2000 readiness. To date, HNC has not
encountered any material Year 2000 issues concerning its computer systems.

           During the first quarter of 1999, HNC expects to have significantly
completed its assessment of the most reasonably likely worst case scenarios as
well as identifying potential contingency plans should HNC's Y2k Project not be
fully completed in time.

           All costs associated with carrying out HNC's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
preparation for the Year 2000 has not been, and is not expected to be, material
to HNC's business, financial condition or results of operations. Nevertheless,
HNC may not timely identify and remediate all significant Year 2000 problems and
remedial efforts may involve significant time and expense. Failure to identify
such problems could, for example, impair HNC's internal product development
efforts and internal management systems. There can be no assurance that any Year
2000 compliance problems of HNC or its customers or suppliers will not have a
material adverse effect on HNC's business, financial condition and results of
operations.

           The inability of HNC to complete its assessment and any necessary
modifications to recently acquired products could have a material adverse effect
on HNC's business, financial condition and results of operations. Even if HNC's
products are Year 2000 compliant, HNC may in the future be subject to claims
based on Year 2000 issues in the products of other companies, or issues arising
from the integration of 
    



                                       72
<PAGE>   82
   
multiple products within a system. The costs of defending and resolving Year
2000-related disputes, and any liability of HNC for Year 2000-related damages,
including consequential damages, could have a material adverse effect on HNC's
business, financial condition and results of operations. Further, HNC's products
are generally used with enterprise systems involving complex software products
developed by other vendors, which may not be Year 2000 compliant. In particular,
many of HNC's customers are financial institutions, insurance companies and
other companies with insurance and financial services businesses, all of which
use legacy computer systems that are expected to be particularly susceptible to
Year 2000 compliance issues. If HNC's customers are unable to use their
information systems because of the failure of such noncompliant systems or
software or for any other reason, there would be a decrease in the volume of
transactions that HNC's customers process using HNC's products. As a result,
HNC's recurring revenue in the form of usage-based transactional fees from
customers in the insurance and financial solutions markets would decline, which
would have a material adverse effect on HNC's business, financial condition and
results of operations. Such failure could also affect the perceived performance
of HNC's products, which could have a negative effect on HNC's competitive
position. In addition, HNC believes that the purchasing patterns of customers
and potential customers may be affected by Year 2000 issues as companies expend
significant resources to correct or patch their current software systems for
Year 2000 compliance. These expenditures may result in reduced funds available
to purchase software products such as those offered by HNC, which could result
in a material adverse effect on HNC's business, financial condition and results
of operations.
    

   
           HNC is also reviewing its major internal corporate systems for Year
2000 compliance and intends to take appropriate action based on the results of
such review. HNC's plan for the Year 2000 calls for compliance verification of
external vendors supplying software and information systems to HNC and
communication with significant suppliers to determine the readiness of third
parties' remediation of their own Year 2000 issues. As part of its assessment,
HNC is evaluating the level of validation it will require of third parties to
ensure their Year 2000 readiness. To date, HNC has not encountered any material
Year 2000 issues concerning its computer systems. HNC plans to complete its Year
2000 research and testing and create any necessary contingency plans by the end
of 1998. All costs associated with carrying out HNC's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
preparation for the Year 2000 has not been, and is not expected to be, material
to HNC's business, financial condition or results of operations. Nevertheless,
HNC may not timely identify and remediate all significant Year 2000 problems and
remedial efforts may involve significant time and expense. Failure to identify
such problems could, for example, impair HNC's internal product development
efforts and internal management systems. There can be no assurance that any Year
2000 compliance problems of HNC or its customers or suppliers will not have a
material adverse effect on HNC's business, financial condition and results of
operations.
    

NEW ACCOUNTING PRONOUNCEMENTS

   
           During the first quarter of 1998, HNC adopted Statement of Position
No. 97-2 ("SOP 97-2"), "Software Revenue Recognition," as amended by Statement
of Position No. 98-4 "Deferral of the Effective Date of a Provision of SOP 97-2,
Software Revenue Recognition". SOP 97-2 provides guidance for software revenue
recognition. The adoption of SOP 97-2 did not have a significant impact on HNC's
financial position or results of operations.
    

           In June 1997, the FASB issued Statement of Financial Accounting
Standards No. 131 ("FAS 131"), "Disclosures about Segments of an Enterprise and
Related Information," which HNC is required to adopt for its 1998 annual
financial statements. This statement establishes standards for reporting
information about operating segments in annual financial statements and requires
selected information about operating segments in interim financial reports
issued to stockholders. It also establishes standards for related disclosures
about products and services, geographic areas and major customers. Under FAS
131, operating segments are to be determined consistent with the way that
management organizes and evaluates financial information internally for making
operating decisions and assessing performance. HNC has not determined the impact
of the adoption of this new accounting standard on its consolidated financial
statement disclosures.

           In June 1998, the Financial Accounting Standards Board issued
Statement of Accounting Standards No. 133 "Accounting for Derivative Instruments
and Hedging Activities" ("FAS 133") which HNC will be required to adopt for its
2000 annual financial statements. This statement establishes a new model for
accounting for derivatives and hedging activities. Under FAS 133, all
derivatives must be recognized as assets and liabilities and measured at fair
value. HNC has not determined the impact of the adoption of this new accounting
standard on its consolidated financial position or results of operations.



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<PAGE>   83


                                 BUSINESS OF HNC

           HNC develops, markets and supports predictive software solutions for
leading service industries. These predictive software solutions employ
proprietary neural-network predictive decision engines, profiles, traditional
statistical modeling, business models, expert rules and context vectors to
convert existing data and business experiences into meaningful recommendations
and actions. Just as manufacturing organizations have implemented manufacturing
resource planning ("MRP") software to automate routine transactions, leading
service industries such as the health-care/insurance, financial services and
retail industries are using predictive software solutions to improve
profitability, competitiveness and customer satisfaction.

INDUSTRY BACKGROUND

           Today's competitive business environment has forced many service
companies to increase business efficiency while improving their flexibility and
responsiveness to changing market conditions. Businesses continually seek new
ways to make better decisions by collecting and analyzing data. Consequently,
service companies have made, and continue to make, significant investments in
computer systems designed to gather and electronically store ever increasing
amounts of data. In most cases, these computerized systems automate manual tasks
and activities, resulting in the conversion of significant amounts of corporate
data from paper to electronic form. However, these systems generally do not
synthesize data in ways that help businesses make better real-time decisions.

           Historically, the development of predictive software solutions was
inhibited by the lack of computing standards and effective computational
intelligence techniques. The emergence of client-server standards, including
relational database management systems, the Windows operating system and network
communications protocols, has fostered the increased transmission and
dissemination of electronically stored data within and among businesses. MRP
software systems were developed to automate production, accounting, human
resources and distribution transactions for primarily manufacturing
organizations. These systems manage and store large amounts of diverse business
information, providing continuous and simultaneous availability of information
to geographically dispersed employees, customers and suppliers. However, MRP
systems generally do not provide businesses with the functionality and
flexibility needed to utilize this data to simulate operations and make
real-time decisions and recommendations in diverse and rapidly changing business
environments.

           Several service industries have a particular need to leverage large
volumes of real-time transactional and operational data in order to address
systemic issues that have historically affected profitability, competitiveness
and customer satisfaction. These industries and issues include:

      -    HEALTHCARE/INSURANCE INDUSTRY. Workers' compensation fraud and
           abuse is currently receiving widespread attention in the
           healthcare/insurance industry. Conning & Co. recently estimated
           that 10%-25% of the dollar amount of filed workers' compensation
           claims in the United States are fraudulent. This translates to
           more than $5 billion lost each year to workers' compensation
           fraud.

      -    FINANCIAL SERVICES INDUSTRY. Based on reports from Visa and
           Mastercard, Faulkner & Gray estimates that United States credit
           card credit losses and chargeoffs were $18 billion in 1996.

      -    RETAIL INDUSTRY. Rapid changes in consumer buying patterns have
           caused merchants to place increased emphasis on predicting
           consumer demand and managing retail inventories. The change from
           mass to individual retail marketing has multiplied the number of
           promotional offers and stock-keeping units ("SKUs") required to
           address market opportunities. The U.S. Department of Commerce
           estimates that the inventory carrying costs for retail
           inventories nationwide were $316 billion at the end of March
           1997.

           Historically, many companies in the healthcare/insurance, financial
services and retail industries have developed specialized in-house applications
to address these issues. Such applications are generally designed to access
large volumes of operational and transactional data stored on mainframe
computers. However, such systems are expensive, costly to support and maintain,
and do not offer flexible and enterprise-wide access to data. Furthermore, most
of these systems are not designed to meet the need for real-time recommendations
and actions. The widespread adoption of distributed client-server computing has
provided organizations with a much greater ability to access and manipulate
stored information but also has created the need for third-party vendors of
packaged applications software solutions that provide the same degree of
functionality and reliability as traditional in-house applications. These
vendors are able to provide a higher degree of 



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<PAGE>   84

functionality and reliability than traditional in-house applications by
combining the domain knowledge from their customers and partners with expertise
in computational intelligence and client-server technologies.

THE HNC SOLUTION

           HNC's predictive software solutions enable leading service
industries, such as the healthcare/insurance, financial services and retail
industries, to analyze and act upon operational and transactional data in real
time. HNC's products provide the following benefits:

           Core predictive software technology. HNC's software includes a
variety of computational intelligence technologies such as proprietary
neural-network predictive decision engines, profiles, traditional statistical
modeling, business models, expert rules and context vectors, that can be
customized to specific business applications. Neural networks can be adapted to
changing environments and applications quickly and have proven to be accurate
and effective in real-time operating environments. HNC's decision engine also
includes a user-defined rule-based technology. The neural networks and rulebases
are delivered through software that allows HNC's products to adapt to many
customer-specific business needs without extensive custom programming. Adaptable
functions include workflow queuing management, policy and procedure guidelines,
input data modification, flexible graphical user interface ("GUI") display,
decision criteria and report formats.

           Quick payback for customers. HNC's software solutions are designed
for quick customer payback. HNC typically installs its products in two to six
months, and customer payback periods for installation and first year usage fees
are typically less than one year. Payback is rapid because the software products
address applications that have a significant profit impact. HNC personnel focus
not only on the technical integration, but also on delivering direct benefits to
the customer throughout the service contract period.

           Transaction-based, real-time decision capability. HNC's software can
operate in real time, providing an immediate, situation-specific response to
each customer transaction. For example, the Falcon system for credit/debit card
fraud detection can monitor millions of transactions each day, identify
fraudulent transactions in progress and permit the card issuing bank to withhold
an authorization before the perpetrator completes a purchase. The Falcon system
differs from traditional modeling implementations, which operate in a batch or
off-line mode on a collection of historical transactions.

           Flexible client-server solutions. HNC's solutions can be integrated
into a customer's existing environment or architecture. HNC's products are
available on industry-standard, client-server platforms, including Windows and
UNIX clients, NetWare, Windows NT, UNIX and CICS servers and IBM, Oracle, Sybase
and Informix databases. HNC's application products represent a complete software
solution, including decision models, deployment software, communications
interfaces and GUIs. HNC also supplies systems integration, ongoing performance
analysis, model rebuilding and application consulting services to help ensure
ongoing success for the customer. HNC believes that this flexible combination of
products, services and deployment platforms represents an advance that enables
successful predictive software system deployment in many mission-critical
applications.

           Turnkey, customized and user-developed model options. The choice of
data source is important to customers because data are the fundamental building
blocks used to create accurate predictive models. HNC provides various models
built on industry-specific or customer-specific data to meet individual
application requirements. Customers and data suppliers provide HNC with
historical transaction data for turnkey models, trend analyses and product
updates. This combination of proprietary turnkey (from data and individual
consumer profiles), customized and user-developed models allows HNC to offer
products that solve a broad range of predictive application problems.

HNC'S STRATEGY

           HNC's objective is to be the leading supplier of predictive software
solutions by leveraging its core computational intelligence technology across a
series of product families targeted at specific service industries. HNC's
strategy for achieving this objective contains the following key elements:

           Maintain and strengthen HNC's position at the core of its customers'
applications infrastructure. Customers rely heavily on HNC's predictive software
solutions to anticipate and react to rapidly changing business conditions. HNC's
core computational intelligence technology serves as a platform upon which
service businesses can deploy and combine HNC's 



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<PAGE>   85

products to manage and respond to operational and transactional data in real
time. Therefore, HNC attempts to establish a strong position within the
applications infrastructure of its customers. For example, HNC's first
predictive solution product, Falcon, is a credit/debit card fraud detection
system for monitoring individual credit card accounts. By adapting the core
technology developed for Falcon, HNC later introduced ProfitMax, a
transaction-based, real-time credit authorization system that manages the
profitability of credit card portfolios. HNC believes that the opportunity
exists for similar penetration within each of its core vertical markets,
including opportunities such as retail banking within the financial services
industry. As another example, HNC's context vectoring technology could profile
visitors to a financial institution's Web site and send proactive direct e-mails
regarding financial products.

           Leverage core predictive technologies to enter new market segments.
Historically, HNC has applied its core predictive technology to the domain
knowledge of companies it has acquired to introduce new products. For example,
in August 1996, HNC acquired Risk Data, a developer of decision systems in the
workers' compensation industry. By combining Risk Data's industry expertise with
HNC's fraud detection technology, HNC is developing a VeriComp module that
applies predictive technology to employer fraud in the workers' compensation
industry. In addition, HNC is evaluating opportunities in other data-intensive
industries, such as telecommunications, where predictive software may have the
ability to improve business performance and profitability.

   
           Earn recurring revenues through long-term contracts. HNC markets many
of its predictive software solutions as an ongoing service that includes
software licenses, decision model updates, application consulting and on-line or
on-site support and maintenance. Since many of HNC's applications are enhanced
by periodic model updates, customers derive significant value from HNC's ongoing
services. In addition, the mission-critical nature of many of HNC's predictive
software solutions creates customer demand for long-term support commitments.
Accordingly, HNC's customers typically pay for this package of software and
service with a monthly usage fee and a one to seven year contract commitment.
    

           Use strategic relationships to support direct distribution. In each
of its primary markets, HNC uses strategic relationships with system integrators
and third-party service providers to support its direct distribution efforts.
These partners provide varying levels of distribution support, from lead
generation to resale of HNC's products. HNC maintains such strategic
relationships with Electronic Data Systems Corporation ("EDS"), Intracorp and
Marsh McLennan, Inc. in healthcare/insurance, First Data Corporation and EDS in
financial services, and Andersen Consulting and KPMG Peat Marwick LLP in retail.

           Growth through acquisitions. HNC acquired Risk Data, Retek and
CompReview in 1996 and 1997, thereby significantly expanding its product
offerings in its target markets. In 1998, HNC acquired PCS, FTI and the ATACS
product line and entered into the Merger Agreement with OSI. HNC expects to
continue to review acquisitions of businesses, products and technologies as a
means to expand its product offerings for existing and new target markets.

   
MARKETS AND PRODUCTS

           HNC has a broad family of predictive software products that provide
specific solutions for each of the healthcare/insurance, financial services and
retail markets. Revenues from each of HNC's three target markets accounted for
more than one-quarter of HNC's total revenues in 1997. Revenues from three
products, CRLink, Retek Merchandising System and Falcon, accounted for 57.9% and
51.1% of HNC's total revenues in 1997 and the first nine months of 1998,
respectively. See "Risk Factors--Risks Relating to HNC--Product Concentration."
    

           Healthcare/Insurance

           HNC offers and is developing products in the healthcare/insurance
market. These products are targeted to insurance carriers, insurance providers,
managed care organizations, state insurance funds, third-party administrators
and large, self-insured employers. HNC has developed predictive software
solutions that address the containment of the medical costs of workers'
compensation and automobile accident insurance claims, workers' compensation
loss reserving, workers' compensation fraud, managed care effectiveness and
provider effectiveness. These solutions, CRLink, MIRA, CompCompare,
ProviderCompare, PMAdvisor, VeriComp and AUTOADVISOR allow users the ability to
reduce fraud losses and streamline operations.



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<PAGE>   86

                   HNC HEALTHCARE/INSURANCE INDUSTRY PRODUCTS

<TABLE>
<CAPTION>
         PRODUCT                           PRODUCT DESCRIPTION
         -------                           -------------------
<S>                           <C>
CRLink                        CRLink operates as the bill review engine that
                              links all of the critical components of an
                              effective cost containment program to help clients
                              control the cost of workers' compensation,
                              personal injury and other casualty risks.

MIRA                          MIRA uses statistical predictive methods to
                              automatically determine workers' compensation loss
                              reserves based on historical data gathered from
                              insurance carriers, third-party administrators and
                              state insurance funds throughout the United
                              States.

CompCompare                   CompCompare enables clients to compare claims
                              costs or the effectiveness of managed care
                              programs by using benchmarking data from HNC's
                              proprietary workers' compensation database.

ProviderCompare               ProviderCompare  is a physician  profiling  product that 
                              provides  on-line access to HNC's proprietary workers' 
                              compensation  database.  ProviderCompare  enables clients 
                              to generate a detailed comparative analysis, such as treatment
                              costs, among providers within the same specialty.

PMAdvisor                     PMAdvisor enables claim payors to verify that the
                              number of visits and type of treatment for claims
                              involving physical medicine (primarily
                              chiropractic and physical therapy) are appropriate
                              for the diagnosis and severity of the injury and
                              to identify chiropractic and physical therapy
                              claims that exceed appropriate treatment
                              guidelines.

VeriComp                      VeriComp is a workers' compensation claimant
                              system designed to assist in identifying claimant
                              behavior that is likely to indicate the presence
                              of fraud or abuse.

AUTOADVISOR                   AUTOADVISOR integrates the medical repricing
                              software with a managed care component for the
                              auto medical claims market.
</TABLE>

           Financial Services

           The increasing volume of electronic financial transactions requires
mission-critical decision-making in real time for applications such as credit
card charge authorization, that carry a substantial risk of consumer and
merchant fraud. HNC's Falcon and ProfitMax product lines are targeted at bank
and private label card issuers and payment processors. Falcon employs a
client/server architecture that consists of an interface into the customer's
legacy system, a decision engine, a cardholder profile database, a case
management database and a fraud workstation.

   
           HNC estimates that loan underwriting costs in the United States
currently exceed $2.5 billion each year. Competitive pressures including cost
reduction, rapid loan approval and the growth of on-line banking have compelled
lenders to turn to software solutions that can automate loan origination in
order to lower costs, improve customer service and provide remote access to
lending services. HNC's predictive software solution for the loan origination
markets, Capstone, allows lenders such as banks and private label card
issuers, home equity lenders, auto lenders and mortgage lenders to automate the
loan approval decision process.
    

                    HNC FINANCIAL SERVICES INDUSTRY PRODUCTS

<TABLE>
<CAPTION>
             PRODUCT                                       PRODUCT DESCRIPTION
             -------                                       -------------------
<S>                         <C>
Falcon Product Line         Falcon  products  are  neural  network-based   solutions  that  examine  transaction,
Falcon                      cardholder  and merchant  data to detect a wide range of credit and debit card fraud.
Falcon Expert               Using predictive  software  techniques,  Falcon captures  relationships  and patterns
Falcon Select               that often are missed by traditional methods of detecting suspicious transactions.
Falcon Debit
Falcon Retail
Falcon Sentry
Eagle

Capstone Product Line       Capstone  is  an  intelligent,   high-performance  new  account  decision  processing
Capstone for Payment        solution.   Based  on  expert  rules,  Capstone  allows  users  to  automate  lending
    Cards                   decisions and design, test, implement and track lending policies.
Capstone for
   Consumer Lending
Capstone for Mortgage
   Lending
</TABLE>


                                       77
<PAGE>   87

   
<TABLE>
<S>                         <C>
ProfitMax Product Line      ProfitMax provides transaction-based, real-time authorization and action decisions 
ProfitMax                   from within a complete infrastructure for managing the profitability of credit card 
ProfitMax Bankruptcy        portfolios. ProfitMax uses neural networks, expert rules and HNC's cardholder
                            behavior profiling technology to analyze the expected profitability of each account
                            in an issuer's portfolio using the issuer's definition of financial profit.
                            ProfitMax Bankruptcy uses the basic ProfitMax structure to predict the
                            likelihood of cardholder bankruptcy even before the cardholder is delinquent.

SelectProfile               SelectProfile  is a predictive  customer  relationship  management  service that uses
                            transaction  data  to  automatically   segment  cardholders  for  targeted  marketing
                            programs.
</TABLE>
    


           Retail

           Although retailers have made significant investments in customer
information, point-of-sale and quick-response ordering systems, these
applications often do not include the forecasting ability required to maximize
profitability and respond to competition through timely "in-store"
replenishment, electronic networking and quick response initiatives. HNC has
developed a group of products that effectively addresses inventory control,
merchandise management and financial control management. These software
solutions allow retailers to build forecasting and marketing models to carry out
day-to-day buying and selling activities, thereby reducing carrying costs for
inventories and improving purchasing, promotion and logistics efficiencies. The
target markets for HNC's retail products are department stores, mass
merchandisers and specialty retail chains in multi-store and multi-warehouse
environments with gross sales in excess of $200 million.

                          HNC RETAIL INDUSTRY PRODUCTS


<TABLE>
<CAPTION>
             PRODUCT                                                             PRODUCT DESCRIPTION
             -------                                                             -------------------
<S>                                 <C>
Retek Merchandising                 The Retek Merchandising System provides inventory control, merchandise management and 
System                              financial control and addresses the definition and management of merchandise at the
                                    SKU level and reporting and financial control through stock ledgers.

Retek Data Warehouse                Retek Data Warehouse provides the transaction infrastructure needed for
                                    retailers to plan, buy, move, sell and pay for their merchandise.

Active Retail                       Active Retail Intelligence identifies performance exceptions and recommends the 
Intelligence                        appropriate corrective action.

Retek Demand                        Retek Demand Forecasting provides forecasts to retailers' supply chain planning 
Forecasting                         allocation and replenishment functions and uses predictive causal techniques with
                                    automated forecasting and multi-dimensional on-line analysis.

Falcon                              Retail Falcon Retail provides proactive detection of private label card application
                                    and transaction fraud.

Retek Trade Management              Retek's  trade and import  system  manages the global  procurement  process with landed
                                    costing,  letter  of  credit,   transportation  tracking,  customs  clearance,  payment
                                    tracking and expense  allocation.  Retek Trade  Management  provides status updates and
                                    alerts as product moves through the supply
                                    chain, and automates the routine tasks and
                                    paper-intensive nature of the import
                                    process.

Retek Warehouse                     This distribution management system is scaled to handle distribution  arrangements from
   Management                       the  single  distribution  center  to  multiple-facility  management.  Retek  Warehouse
                                    Management  manages  appointments,   trailers/yards,   receiving,   inventory  control,
                                    distribution planning,  picking,  shipping, and manifest mailing systems. Designed as a
                                    flexible,  table-driven system,  it allows retailers  to configure system parameters to
                                    optimize their operating environment.

</TABLE>


                                       78
<PAGE>   88

<TABLE>
<S>                                 <C>
Retek Collaborative                 Retek's collaborative supply chain management system enables the retailer to integrate 
Supply                              with their supply chain via the Internet to share a common plan and forecast and to
                                    manage  the  profitability  of that plan  in-season.  This  delivers  improved  product
                                    availability and reduced lost sales, without increasing stock levels and associated
                                    markdown.

Retek Sales Audit                   Retek Sales Audit  provides  retailers  the  capability to balance sales and tenders at
                                    stores to match  cash to bank  deposits.  Sales  Audit  accepts  transaction  data from
                                    popular  Point-of-Sale  applications  and moves the data  through a series of processes
                                    that  culminate in clean data that can be accepted into a number of systems,  including
                                    financial, loss prevention,  data warehouse and merchandising  applications.  Data that
                                    is found to be inaccurate is brought to the attention of the retailer's  sales auditors
                                    who use the  intuitive  features  of the  Retek  Sales  Audit  system  to  correct  the
                                    problems.  ReSA  provides  Flash Sales  reporting  capability  that  captures the daily
                                    sales  snapshot  regardless  of whether all  transactions  have passed  validation.  In
                                    addition,  ReSA also supports  multiple  currencies.  Retek Sales Audit lets  retailers
                                    easily clean their POS data to balance sales and tenders, and cash to bank deposits.

Retek Invoice Matching              Retek Invoice Matching streamlines the invoice matching process by automatically 
                                    confirming receipt of merchandise and alerting the retailer to unmatched or 
                                    partially-matched invoices using a cross-reference number.

Retek Store Systems--RF             Store Systems--RF improves store performance by linking employees in real time with 
                                    corporate head office applications and information, using easy to maintain, 
                                    pre-integrated turnkey solutions.  Retek Store Systems provides back-office
                                    functionality to store employees through handheld RF (radio frequency) devices linked
                                    to corporate databases through a high speed intranet.
</TABLE>


EMERGING MARKET OPPORTUNITIES

           HNC's experience and technology capabilities in the
healthcare/insurance, financial services and retail markets often lead to new
product ideas and concepts. HNC also evaluates new market opportunities that
arise through its commercial and government contract work. As contracts are
completed, the end products are evaluated for commercialization. For example,
contracts for the Advanced Research Projects Agency, United States Army Research
Laboratory, United States Air Force, Office of Naval Research, DataTimes
Corporation and Tracor Applied Sciences, Inc. generated a context-based text
analysis technology called MatchPlus. This core text analysis technology has
been under development at HNC for the last four years for Department of Defense
applications. During 1996, HNC formed Aptex to commercialize HNC's MatchPlus
text analysis technology for emerging markets. Aptex has developed a strategic
partnership with InfoSeek Corporation, an Internet search and navigation
service, to deliver products using this text analysis technology to the Internet
market. To date, three new Internet products have been launched: SelectCast,
SelectResponse and SelectResource.

           Substantially all of HNC's revenues in recent years have been
attributable to sales of predictive software solutions and services, and these
products and services are currently expected to continue to account for a
substantial amount of HNC's future revenues. The market for predictive software
solutions is still emerging. The rate at which businesses have adopted HNC's
products has varied significantly by market and by product within each market,
and HNC expects to continue to experience such variations with respect to its
target markets and products in the future. HNC has introduced products for the
healthcare/insurance, financial services and retail markets. HNC has recently
announced several new products, including PMAdvisor, VeriComp, SelectCast,
SelectResponse, SelectResource and SelectProfile. To date, none of these
products has achieved any significant degree of market acceptance, and there can
be no assurance that such products will ever be widely accepted. Although
businesses in HNC's target markets have recognized the advantages of using
predictive software solutions to automate the decision-making process, many have
developed decision automation systems internally rather than licensing them from
outside vendors. There can be no assurance that the markets for HNC's products
will continue to develop or that HNC's products will be widely accepted, if at
all. If the markets for HNC's new or existing products fail to develop, or
develop more slowly than anticipated, HNC's sales would be negatively impacted,
which would have a material adverse effect on HNC's business, financial
condition and results of operations.



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CUSTOMER SERVICE AND SUPPORT

           A high level of continuing maintenance, service and support is
critical to maintaining the performance of HNC's predictive software solutions.
Service and support are also essential to HNC's objective of developing
long-term relationships with, and obtaining recurring revenues from, customers.
HNC's service and support activities are related to system installation,
performance validation and ongoing consultation on the optimal use of HNC
products.

           Model and Rule Updates. Most HNC product license agreements include
periodic data, model and/or rule updates to maintain system performance. HNC
technical personnel generally assist the customer with installation of updates.
HNC makes commitments to update models and rules at varying intervals, from
fixed times (such as quarterly and annually) to unscheduled times, provided the
customer has met its commitments to provide data to HNC.

           Education. HNC offers comprehensive education and training programs
to its customers. HNC provides on-site training services associated with many of
its products. Fees for education and training services are generally included in
usage-priced products, but may be charged separately in other cases.

           Consulting. HNC's consultants are available to work with customers'
user application groups and information systems organizations. Customers that
buy consulting services are usually planning large implementations or want to
optimize performance of HNC's products in their operating environments. Fees for
consulting are generally included in usage-priced products, but may be charged
separately in other cases.

PRICING

   
           HNC generally establishes prices in one of two ways: usage-based fees
and fixed-fee licenses with maintenance. HNC generally employs usage-based
pricing for its healthcare/insurance products, Falcon and ProfitMax. Under the
usage-based pricing structure, HNC generally provides a fixed-term software
license, software maintenance, model updates (in the case of HNC-supplied
models) and ongoing consulting services in exchange for recurring revenue based
on usage. Usage-based term contracts typically include annual price index
adjustments. In 1995, 1996, 1997 and the first nine months of 1998, annual
license and maintenance revenues from these contracts represented 61.2%, 56.1%,
55.2% and 51.1% of HNC's total revenues, respectively. HNC generally employs
fixed-fee license pricing for Capstone and all of HNC's retail products except
Falcon Retail. Under the fixed-fee license pricing structure, HNC generally
licenses the product for the customer's internal use on a perpetual basis. In
most cases, the user can separately contract for maintenance services on an
annual basis. HNC typically offers early adopter pricing for its usage-based
products to customers that agree to be part of pilot or other early product life
cycle installations. Early adopter pricing might include reduced-fee perpetual
licenses, reduced-fee services or both.
    

           HNC often contracts for installation services associated with its
predictive software solutions. HNC provides user-specific proposals priced at
either fixed-fee levels or on a time and materials basis. In nearly all cases,
travel expenses are billed separately at cost.

           HNC offers contract consulting services. Because of the complexity
associated with predictive software solutions, users often request that HNC help
them to develop models or analyze problems. Also, from time to time HNC accepts
engagements not associated with current product offerings in order to become
more familiar with a new application area and determine the potential for new
product development. Although consulting services are included with many of
HNC's usage-based products, customers may request additional consulting, often
associated with custom modeling.

SALES AND MARKETING

           HNC sells and markets its software and services in North America and
internationally through its direct sales organization, joint marketing and
distribution agreements. HNC's worldwide sales and marketing organization
consisted of 131 employees as of June 30, 1998. The domestic sales staff is
based at HNC's corporate headquarters in San Diego and in United States field
offices in California, Colorado, Connecticut, Georgia, Minnesota, New York,
Pennsylvania, Texas and Virginia. Internationally, HNC has field sales offices
in Australia, Canada, France, Germany, Japan, Singapore, South Africa and the
United Kingdom. To support its sales force, HNC conducts comprehensive marketing
programs, which include direct mail, public relations, advertising, seminars,
trade shows and ongoing customer communication programs. The sales staff is
generally product-based, and each representative is assigned a geographic
territory.



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           HNC has licensed First Data Resources, Inc. ("First Data") and EDS to
act as service bureaus to provide an alternate channel of distribution for
end-users to utilize the Falcon product. First Data also licenses ProfitMax as a
service bureau. HNC generally assists its service bureau partners in the sales
effort, often employing HNC's direct sales force in the process. HNC sales
representatives earn a commission for service bureau sales in their territory.
These service bureaus pay HNC monthly usage fees based on the volume of
transactions processed.

   
           HNC also uses representative agents for certain products in certain
territories outside of North America. HNC has agents covering Australia,
Austria, France, Germany, Italy, New Zealand, Spain and Switzerland. In 1995,
1996, 1997 and the first nine months of 1998, international operations and
export sales (including sales in Canada) represented 12.6%, 17.7%, 16.8% and
24.8% of HNC's total revenues, respectively. International sales result
primarily from Falcon product sales and sales of retail products. HNC intends to
continue to expand its operations outside the United States and to enter
additional international markets which will require significant management
attention and financial resources. HNC has committed and continues to commit
significant time and development resources to customizing certain of its
products for selected international markets and to developing international
sales and support channels. There can be no assurance that HNC's efforts to
develop products, databases and models for targeted international markets or to
develop additional international sales and support channels will be successful.
The failure of such efforts, which can entail considerable expense, could have a
material adverse effect on HNC's business, financial condition and results of
operations.
    

           International sales are subject to additional inherent risks,
including longer payment cycles, unexpected changes in regulatory requirements,
import and export restrictions and tariffs, difficulties in staffing and
managing foreign operations, the burdens of complying with a variety of foreign
laws, greater difficulty or delay in accounts receivable collection, potentially
adverse tax consequences and political and economic instability. HNC's
international sales are currently denominated predominantly in United States
dollars and a small portion are denominated in British pounds sterling. An
increase in the value of the United States dollar relative to foreign currencies
could make HNC's products more expensive, and therefore potentially less
competitive, in foreign markets. In the future, to the extent HNC's
international sales are denominated in local currencies, foreign currency
translations may contribute to significant fluctuations in HNC's business,
financial condition and results of operations. If for any reason exchange or
price controls or other restrictions on foreign currencies are imposed, HNC's
business, financial condition and results of operations could be materially
adversely affected.

           Due in part to the mission-critical nature of certain of HNC's
applications, potential customers perceive high risk in connection with adoption
of HNC's products. As a result, customers have been cautious in making decisions
to acquire HNC's products. In addition, because the purchase of HNC's products
typically involves a significant commitment of capital and may involve shifts by
the customer to a new software and/or hardware platform, delays in completing
sales can arise while customers complete their internal procedures to approve
large capital expenditures and test and accept new technologies that affect key
operations. For these and other reasons, the sales cycle associated with the
purchase of HNC's products is typically lengthy, unpredictable and subject to a
number of significant risks over which HNC has little or no control, including
customers' budgetary constraints and internal acceptance reviews. The sales
cycle associated with the licensing of HNC's products can typically range from
60 days to 18 months. As a result of the length of the sales cycle and the
typical size of customers' orders, HNC's ability to forecast the timing and
amount of specific sales is limited. A lost or delayed sale could have a
material adverse effect on HNC's business, financial condition and results of
operations.

TECHNOLOGY

           HNC seeks to develop innovative products by combining industry and
application knowledge with its core neural-network technology to address
specific market needs. HNC's systems also employ rule-based technology to
implement customer strategy, policy and procedures. These technologies are
incorporated in computer software and hardware architectures, including
client-server hardware, relational databases and object-oriented programming.
HNC intends to continue to develop state-of-the-art technologies to enhance its
current products and broaden development opportunities.

           Neural-Network Technology. Neural networks have predictive power that
can be improved with experience as the historical database increases in size.
The term "neural network" refers to a family of nonlinear, statistical modeling
techniques, sometimes called "computational intelligence." These techniques
distinguish themselves through a process of automated "learning" or "training"
that replaces the time-consuming manual techniques of traditional nonlinear,
statistical modeling. The neural-network architecture itself consists of groups
of "processing elements," or equations with several inputs and a single output.
The output of each element becomes either the input to another element or part
of the 



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dependent output. Each input receives a "weight" or value, in the equation,
which is adjusted during the training process. The actual result from each
training record is compared with the answer from the neural network, and the
weights are adjusted to reduce the error between the two. This process can
become computationally intensive, as millions of training data records must be
processed hundreds or thousands of times. HNC has developed proprietary
high-speed and parallel-processor boards to accelerate training and execution of
its neural-network software. HNC believes that the rapid model development
afforded by its technology provides a competitive advantage in the development
of predictive software solutions.

           Rule-Based Technology. HNC's systems also employ rule-based
technology to implement customer strategy, policy and procedures. The rules are
implemented as part of predictive processes. HNC believes that its combination
of neural networks and rule bases in a single decision engine represents a
significant competitive advantage over more traditional approaches to decision
automation.

           Context Vector Technology. Context vector technology that originated
at HNC and is being commercialized at Aptex is a way to explore, analyze and
model unstructured textual data. Context vector technology automatically
discovers the underlying structure of free form symbolic data. This structure
enables modeling from data elements previously considered impossible to include
in predictive software applications. Context vector technology also models
behavior. Just as relationships are discovered in unstructured data, observing
electronic transaction behavior identifies patterns. Compatibility predictions
can be made between information, behavior, people and products. When combined
with other HNC technologies, such as neural networks and rule-based systems, HNC
believes that context vectors can improve the performance of existing
applications while opening new market opportunities. Context vector technology
has been demonstrated to increase banner advertising click rates on the
Internet, automate e-mail responses and discover unknown relationships in credit
card transaction data.

           HNC's success depends upon its ability to enter new markets by
successfully developing new products for such markets on a timely and
cost-effective basis. HNC's products often require customer data for decision
model development and system installation. As a result, completion of new
products (particularly new products for markets not previously served by HNC)
may be delayed while HNC extracts sufficient amounts of statistically relevant
data and develops the models. During this development process, HNC relies on its
potential customers in the new market to provide data and to help train HNC
personnel in the use and meaning of the data in the specific industry. These
relationships also assist HNC in establishing a market presence and credibility
in the new market. These potential customers, most of which have significantly
greater financial and marketing resources than HNC, may compete with HNC in the
future or otherwise discontinue their relationships with or support of HNC,
either during development of HNC's products or thereafter. The failure by HNC to
obtain adequate third-party support for new product development would have a
material adverse effect on HNC's ability to enter new markets and, consequently,
on HNC's business, financial condition and results of operations. See "Risk
Factors--Risks Relating to HNC--Risks Associated with Technological Change and
Delays in Developing New Products."

RESEARCH AND DEVELOPMENT

   
           HNC believes that its future success depends in part on its ability
to maintain and improve its core technologies, enhance its existing products and
develop new products that meet an expanding range of markets and customer
requirements. HNC intends to expand its existing product offerings and to
introduce new predictive software solutions. In the development of new products
and enhancements to existing products, HNC uses its own tools extensively. Until
1996, HNC relied primarily on internal development of its products. Based on
timing and cost considerations, however, HNC has acquired, and in the future may
consider acquiring, technology or products from third parties. For example, HNC
acquired technology and products in connection with its acquisitions of Risk
Data and Retek in 1996, CompReview in 1997 and PCS, FTI and ATACS in 1998.
    

           HNC performs all quality assurance and develops documentation
internally. HNC intends to continue to support industry standard operating
environments, client-server architectures and network protocols. HNC's
specialists in neural network model development, software engineering, user
interface design, product documentation and quality improvement are responsible
for maintaining and enhancing the performance, quality and usability of all HNC
predictive software solutions. The marketing services organization is
responsible for authoring and updating all user documentation and other
publications. See "Risk Factors--Risks Relating to HNC--Risks Associated with
Technological Change and Delays in Developing New Products."



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           HNC strategically targets its long-term research projects. In
addition to funds allocated by HNC for research, HNC receives research contracts
from a range of commercial sources and the United States Government. Government
and commercial contract customers have included the Advanced Research Projects
Agency, United States Air Force, Office of Naval Research and Tracor Applied
Sciences, Inc. HNC believes that these contracts augment its ability to maintain
existing technologies and investigate new technologies that may or may not
become part of its products. The United States Government typically retains
certain intellectual property rights and licenses in the technologies HNC
develops under research contracts directly or indirectly sponsored by the
government, and in some cases can terminate HNC's rights in such technologies if
HNC fails to commercialize them on a timely basis. Historically, these contracts
have not resulted in development of products contributing to HNC's revenues in
the fiscal year in which the research contract is performed, or in the
subsequent fiscal year.

   
           The market for HNC's predictive software solutions is characterized
by rapidly changing technology and improvements in computer hardware, network
operating systems, programming tools, programming languages, operating systems
and database technology. HNC's success will depend upon its ability to continue
to develop and maintain competitive technologies, enhance its current products
and develop, in a timely and cost-effective manner, new products that meet
changing market conditions, including evolving customer needs, new competitive
product offerings, emerging industry standards and changing technology. For
example, the rapid growth of the Internet environment creates new opportunities,
risks and uncertainties for businesses, such as HNC, which develop software
solutions that now may have to be designed to operate in Internet, intranet and
other on-line environments. HNC may not be able to develop and market, on a
timely basis, or at all, product enhancements or new products that respond to
changing technologies. HNC has previously experienced significant delays in the
development and introduction of new products and product enhancements, primarily
due to difficulties with model development, which has in the past required
multiple iterations, as well as difficulties with acquiring data and adapting to
particular operating environments. The length of these delays has varied
depending upon the size and scope of the project and the nature of the problems
encountered. Any significant delay in the completion of new products, or the
failure of such products, if and when installed, to achieve any significant
degree of market acceptance, would have a material adverse effect on HNC's
business, financial condition and results of operations. Any failure by HNC to
anticipate or to respond adequately to changing technologies, or any significant
delays in product development or introduction, could cause customers to delay or
decide against purchases of HNC's products and would have a material adverse
effect on HNC's business, financial condition and results of operations.
    

INTELLECTUAL PROPERTY AND OTHER PROPRIETARY RIGHTS

   
           HNC relies on a combination of patent, copyright, trademark and trade
secret laws and confidentiality procedures to protect its proprietary rights.
HNC currently owns eleven issued United States patents and has four United
States patent applications pending. HNC has applied for additional patents for
its Falcon technology in Canada, Europe and Japan and for its MIRA product in
Australia, Canada and Europe. HNC's issued United States patents expire at dates
that range from December 2008 to February 2016. There can be no assurance that
patents will be issued with respect to pending or future patent applications or
that HNC's patents will be upheld as valid or will prevent the development of
competitive products. HNC seeks to protect its software, documentation and other
written materials under trade secret and copyright laws, which afford only
limited protection. As part of its confidentiality procedures, HNC generally
enters into invention assignment and proprietary information agreements with its
employees and independent contractors and nondisclosure agreements with its
distributors, corporate partners and licensees, and limits access to and
distribution of its software, documentation and other proprietary information.
Despite these precautions, it may be possible for a third party to copy or
otherwise to obtain and use HNC's products or technology without authorization,
or to develop similar technology independently. In addition, to ensure that
customers will not be adversely affected by an interruption in HNC's business,
HNC places source code for certain of its products into escrow, which may
increase the likelihood of misappropriation or other misuse of HNC's
intellectual property. Moreover, effective protection of intellectual property
rights may be unavailable or limited in certain foreign countries in which HNC
has done and may do business. Also, HNC has developed technologies under
research projects conducted under agreements with various United States
Government agencies or subcontractors to such agencies. Although HNC has
acquired certain commercial rights to such technologies, the United States
Government typically retains ownership of certain intellectual property rights
and licenses in the technologies developed by HNC under such contracts, and in
some cases can terminate HNC's rights in such technologies if HNC fails to
commercialize them on a timely basis. In addition, under certain United States
Government contracts, the results of HNC's research may be made public by the
government, which could limit HNC's competitive advantage with respect to future
products based on such research.
    

   
           In the past, HNC has received communications from third parties
asserting that HNC trademarks infringe such other parties' trademarks, or that
data used by HNC is copyrighted by such third party, none of which has resulted
in litigation or losses to HNC. In November 1998, Nestor filed a complaint
against HNC alleging that HNC is infringing a United States patent issued to
Nestor and that a United States patent issued to HNC is invalid and seeking
damages and injunctive and declaratory relief. The complaint also seeks treble
compensatory damages, punitive damages and injunctive relief for alleged
violations of the Sherman Antitrust Act and the Rhode Island Antitrust Act. See
" Business of HNC--Legal Proceedings." Given HNC's ongoing efforts to 
    



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develop and market new technologies and products, HNC may be subject to claims
from other third parties asserting that HNC's products infringe, or may
infringe, their intellectual property rights. If as a result of any such claims
HNC were precluded from using certain technologies or intellectual property
rights, licenses to such disputed third-party technology or intellectual
property rights might not be available on reasonable commercial terms, if at
all. Furthermore, HNC may initiate claims or litigation against third parties
for infringement of HNC's proprietary rights or to establish the validity of
HNC's proprietary rights. Litigation, either as plaintiff or defendant, could
result in significant expense to HNC and divert the efforts of HNC's technical
and management personnel from productive tasks, whether or not such litigation
is resolved in favor of HNC. In the event of an adverse ruling in any such
litigation, HNC might be required to pay substantial damages, discontinue the
use and sale of infringing products, expend significant resources to develop
non-infringing technology or obtain licenses to infringing technology, and a
court might invalidate HNC's patents, trademarks or other proprietary rights. In
the event of a successful claim against HNC and the failure of HNC to develop or
license a substitute technology, HNC's business, financial condition and results
of operations would be materially and adversely affected.
    

           As the number of software products increases and the functionality of
these products further overlaps, HNC believes that software developers may
become increasingly subject to infringement claims. Any such claims, with or
without merit, can be time consuming and expensive to defend and could
materially and adversely affect HNC's business, financial condition and results
of operations.

COMPETITION

   
           The market for predictive software solutions is intensely competitive
and subject to rapid change. Competitors, many of which have substantially
greater financial resources than HNC, vary in size and in the scope of the
products and services they offer. HNC encounters competition from a number of
sources, including (i) other application software companies, including
enterprise software vendors, (ii) management information systems departments of
customers and potential customers, including financial institutions, insurance
companies and retailers, (iii) third party professional services organizations,
including without limitation, consulting divisions of public accounting firms,
(iv) hardware suppliers that bundle or develop complementary software, (v)
network and service providers that seek to enhance their value-added services,
(vi) neural-network tool suppliers and (vii) managed care organizations. In the
healthcare/insurance market, HNC has experienced competition primarily from
NCCI, Corporate Systems, Inc. and CSC Incorporated. In the workers' compensation
and medical cost administration market, HNC has experienced competition from
MediCode, Medata, Inc. and Embassy Software with regard to software licensing,
and Intracorp and Corvel Corporation in the service bureau operations market.
Additionally, HNC has faced competition from ADP in the automobile accident
medical claims market. In the financial services market, HNC has experienced
competition from Fair, Isaac & Co., Inc., Cogensys (a subsidiary of Policy
Management Systems Corporation), Fannie Mae, Freddie Mac, IBM, Nestor, Inc.,
NeuralTech Inc., Neuralware Inc., PMI Mortgage Services Co., VISA International
and others. In the retail market, HNC has experienced competition from JDA
Software Group, Inc., SAP AG, PeopleSoft, Inc., IBM, Manugistics Group, Inc. and
others. HNC expects to experience additional competition from other established
and emerging companies, as well as other technologies. For example, HNC's Falcon
product competes against other methods of preventing credit card fraud, such as
card activation programs, credit cards that contain the cardholder's photograph,
smart cards and other card authorization techniques. Increased competition,
whether from other products or new technologies, could result in price
reductions, fewer customer orders, reduced gross margins and loss of market
share, any of which could materially adversely affect HNC's business, financial
condition and results of operations.
    

           HNC believes that most of its products are currently priced at a
premium when compared to its competitors' products. The market for HNC's
products is highly competitive, and HNC expects that it will face increasing
pricing pressures from its current competitors and new market entrants. In
particular, increased competition could reduce or eliminate such premiums and
cause further price reductions. In addition, such competition could adversely
affect HNC's ability to obtain new long-term contracts and renewals of existing
long-term contracts on terms favorable to HNC. Any reduction in the price of
HNC's products could materially adversely affect HNC's business, financial
condition and results of operations.

           HNC believes that the principal competitive factors affecting its
market include technical performance (for example, accuracy in detecting credit
card fraud or evaluating workers' compensation claims), access to unique
proprietary databases and product attributes such as adaptability, scalability,
ability to integrate with products produced by other vendors, functionality,
ease-of-use, product reputation, quality, performance, price, customer service
and support, the effectiveness of sales and marketing efforts and HNC
reputation. Although HNC believes that its products currently compete favorably
with respect to such factors, there can be no assurance that HNC can maintain
its competitive position 



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against current and potential competitors, especially those with significantly
greater financial, marketing, service, support, technical and other resources.

   
           Some of HNC's current competitors, and many of HNC's potential
competitors have significantly greater financial, technical, marketing and other
resources than HNC and broader integrated product lines. As a result, they may
be able to respond more quickly to new or emerging technologies and changes in
customer requirements or to devote greater resources to the development,
promotion and sale of their products than HNC and may possess marketing
advantages due to their ability to market integrated suites of related products
that are vital to the customer's computing infrastructure. In addition, current
and potential competitors have established or may establish cooperative
relationships among themselves or with third parties to increase the ability of
their products to address the needs of HNC's prospective customers. Accordingly,
it is possible that new competitors or alliances among competitors may emerge
and rapidly gain significant market share. Also, HNC relies upon its customers
to provide data, expertise and other support for the ongoing updating of HNC's
models. HNC's customers, most of which have significantly greater financial and
marketing resources than HNC, may compete with HNC in the future or otherwise
discontinue their relationships with or support of HNC. There can be no
assurance that HNC will be able to compete successfully against current and
future competitors or that competitive pressures faced by HNC will not
materially adversely affect its business, financial condition and results of
operations.
    

EMPLOYEES

   
           As of September 30, 1998, HNC had 927 employees, including 449 in
product development and support, 143 in customer service, 125 in sales and
marketing, 84 in service bureau and 126 in finance, administration and MIS. Most
of these employees are located in the United States. None of HNC's employees are
represented by a labor union. HNC has experienced no work stoppages and believes
that its employee relationships are generally good.

           HNC's success depends to a significant degree upon the continued
service of members of HNC's senior management and other key research,
development, sales and marketing personnel. Accordingly, the loss of any of
HNC's senior management or key research, development, sales or marketing
personnel could have a material adverse effect on HNC's business, financial
condition and results of operations. Only a small number of employees have
employment agreements with HNC, and there can be no assurance that such
agreements will result in the retention of these employees for any significant
period of time. In addition, the untimely loss of a member of the management
team or a key employee of a business acquired by HNC could have a material
adverse effect on HNC's business, financial condition and results of operations,
particularly if such loss occurred before HNC has had adequate time to
familiarize itself with the operating details of that business and provide a
suitably experienced replacement for such employee. In the past, HNC has
experienced difficulty in recruiting a sufficient number of qualified sales and
technical employees. In addition, competitors may attempt to recruit HNC's key
employees. There can be no assurance that HNC will be successful in attracting,
assimilating and retaining such personnel. The failure to attract, assimilate
and retain key personnel could have a material adverse effect on HNC's business,
financial condition and results of operations.
    

PROPERTIES

           HNC's principal administrative, sales, marketing, support, research
and development facilities are located in approximately 63,000 square feet of
space in San Diego, California. HNC and its subsidiaries also lease an aggregate
of approximately 117,000 square feet of additional office space in Minneapolis,
Minnesota; Costa Mesa, California; Irvine, California; Cincinnati, Ohio; and
Atlanta, Georgia. HNC and its subsidiaries also maintain numerous field offices
in the United States and in foreign countries. HNC believes that its current
facilities are adequate to meet its needs for the foreseeable future. HNC
believes that suitable additional or alternative space will be available in the
future on commercially reasonable terms as needed.

   
LEGAL PROCEEDINGS

           On November 25, 1998, Nestor filed a complaint against HNC in the
United States District Court for the District of Rhode Island. In the complaint,
Nestor alleges that HNC has violated the federal Sherman Antitrust Act and the
Rhode Island Antitrust Act and tortiously interfered with prospective
contractual business relationships of Nestor in connection with HNC's marketing
of its Falcon credit card fraud detection product. The complaint also alleges
that HNC has infringed a United States patent held by Nestor. Nestor seeks to
recover unspecified compensatory damages, treble damages and punitive damages
and to obtain certain injunctive relief arising from these claims. The complaint
also seeks a declaratory judgment that a United States patent held by HNC is
invalid and unenforceable due to alleged inequitable conduct of HNC in obtaining
such patent and that Nestor's products do not infringe such patent. Although HNC
is in the early stages of analyzing Nestor's complaint, HNC believes that the
complaint is without merit and that HNC has good and valid defenses to Nestor's
claims. HNC intends to defend the action rigorously.
    


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                     OSI SELECTED HISTORICAL FINANCIAL DATA
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)

     The selected financial data set forth below as of December 31, 1996 and
1997, and for the three years ended December 31, 1997 are derived from OSI's
audited financial statements, which appear elsewhere in this Proxy
Statement/Prospectus. The selected financial data set forth below as of December
31, 1994 and 1995, and for the year ended December 31, 1994 are derived from
OSI's audited financial statements which are not included in this Proxy
Statement/Prospectus. The selected financial data set forth below as of and for
the year ended December 31, 1993 are derived from OSI's unaudited financial
statements which are not included in this Proxy Statement/Prospectus. The
selected financial data set forth below as of September 30, 1998, and for the
nine months ended September 30, 1997 and 1998 are derived from OSI's unaudited
financial statements, which appear elsewhere in this Proxy Statement/Prospectus.
In the opinion of OSI management, the unaudited financial statements have been
prepared on a basis consistent with the financial statements which appear
elsewhere in this Proxy Statement/Prospectus and include all adjustments,
consisting only of normal recurring adjustments, necessary for a fair statement
of the financial position and results of operations for these unaudited periods.
The operating results for the nine months ended September 30, 1998 are not
necessarily indicative of the results to be expected for the full year ending
December 31, 1998. The data set forth below should be read in conjunction with
"OSI Management's Discussion and Analysis of Financial Condition and Results of
Operations" and OSI's financial statements, including the notes thereto,
included elsewhere in this Proxy Statement/Prospectus.

    

   
<TABLE>
<CAPTION>
                                                                                          NINE MONTHS ENDED
                                                     YEAR ENDED DECEMBER 31,                SEPTEMBER 30,
                                        -----------------------------------------------   ------------------
                                         1993      1994      1995      1996      1997      1997      1998
                                        -------   -------   -------   -------   -------   -------   -------
<S>                                     <C>       <C>       <C>       <C>       <C>       <C>       <C>    
STATEMENT OF OPERATIONS DATA:
 Revenues:
   License and maintenance ...........  $    --   $    --   $   220   $   879   $ 4,505   $ 2,045   $ 5,805
   Installation and implementation ...       --        --        48       140     1,959     1,159     3,196
   Hardware and other ................       95        --        --        --       185       105       475
                                        -------   -------   -------   -------   -------   -------   -------
      Total revenues .................       95        --       268     1,019     6,649     3,309     9,476
  Operating expenses:
    License and maintenance ..........       --        --       381     1,100     1,801     1,054     1,685
    Installation and implementation ..       --        --       319       937     2,416     1,649     2,679
    Hardware and other ...............       25        --        --        --        93        55       689
    Sales and marketing ..............       60       136       398     1,051     2,132     1,454     2,577
    Product development ..............      436       985       661     1,060     1,902     1,512     1,564
    General and administrative .......       50        84       399       645     1,569     1,121     2,180
    Contract termination .............       --        --        --        --        --        --     1,265
    Public offering costs.............       --        --        --        --        --        --     1,055
                                        -------   -------   -------   -------   -------   -------   -------
      Total operating expenses .......      571     1,205     2,158     4,793     9,913     6,845    13,694
                                        -------   -------   -------   -------   -------   -------   -------
  Loss from operations ...............     (476)   (1,205)   (1,890)   (3,774)   (3,264)   (3,536)   (4,218)
  Interest income (expense), net .....      (37)       14        (5)      136       209       121       247
                                        -------   -------   -------   -------   -------   -------   -------
  Net loss ...........................  $  (513)  $(1,191)  $(1,895)  $(3,638)  $(3,055)  $(3,415)  $(3,971)
                                        =======   =======   =======   =======   =======   =======   =======
  Net loss per common share (basic and
    diluted) .........................  $ (0.25)  $ (0.61)  $ (0.98)  $ (1.73)  $ (1.42)  $ (1.59)  $ (1.80)
  Weighted average common shares used
    to compute net loss per share ....    2,079     1,955     1,936     2,103     2,155     2,152     2,207
</TABLE>
    




   
<TABLE>
<CAPTION>
                                                                                       DECEMBER 31,               SEPTEMBER 30,
                                                              ---------------------------------------------------           
                                                                1993       1994      1995       1996       1997       1998
                                                              --------   --------  --------   --------   --------   --------
<S>                                                           <C>        <C>       <C>        <C>        <C>        <C>     
BALANCE SHEET DATA:
  Cash and cash equivalents ................................  $      2   $    652  $  3,914   $  4,438   $  7,596   $  5,603
  Working capital (deficit) ................................      (100)       660     3,570      4,901      6,198      3,736
  Total assets .............................................        67        771     4,354      7,546     11,302     10,745
  Long-term debt, less current portion .....................       730        250        --         --         58         --
  Mandatorily redeemable convertible preferred stock and
     warrants...............................................        --         --     5,092     10,573     15,551     16,140
  Stockholders' equity (deficit) ...........................      (764)       521    (1,253)    (4,779)    (7,826)   (10,167)
</TABLE>
    


                                       86
<PAGE>   96


                    OSI MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

OVERVIEW

           OSI is a leading provider of client/server core processing software
and related services to small to mid-size banks and credit unions. OSI
established operations in May 1992, and released its first major product, The
Complete Banking Solution, in the second quarter of 1995. OSI released a second
major product, The Complete Credit Union Solution, in the first quarter of 1998.
These two products (the "OSI System") are fully-integrated suites of banking and
credit union applications that operate in a Windows NT environment using an
Oracle relational database. The OSI System supports an institution's entire core
processing requirements, including deposits and loans, teller functions,
home/Internet banking and platform automation.

   
           As of September 30, 1998, 42 banks, including four banks utilizing
outsourcing services provided by OSI's outsourcing partners, and one credit
union utilized the OSI System. An additional 41 banks, including one credit
union, were in various stages of implementation, including 13 banks owned by
three bank holding companies and nine banks utilizing outsourcing services
provided by OSI's outsourcing partners.


           OSI currently markets its products in the United States directly and,
through an alliance with Unisys PAAG ("Unisys"), in Asia (except Japan), South
Africa and certain other countries. OSI has established software license and
marketing agreements with BISYS and COCC under which these third parties use the
OSI System to provide core processing services to banks and credit unions on an
outsourced basis. Under the agreement with BISYS, software license fees are paid
to OSI over a three-year period following BISYS' implementation of each OSI
System. OSI recognized $181,013 under the BISYS agreement in the nine months
ended September 30, 1998, comprised primarily of consulting related revenue and
to a lesser extent installation and software license revenues. Under the
agreement with COCC, software license fees are paid, and revenues are
recognized, upon implementation of each OSI System. Under this agreement, once
cumulative software license fees total a stipulated amount, COCC is released
from any further obligation to pay license fees. This release is subject to a
one-time payment in December 2002 if the asset base of COCC's customers has
exceeded a specified amount. Under both the BISYS and COCC agreements, OSI is
also entitled to annual support and maintenance payments on each installed OSI
System. OSI recognized revenue of $320,728 under the COCC agreement in the nine
months ended September 30, 1998. Of this amount OSI recognized $250,000 for the
delivery of the OSI System source code to COCC. The $70,728 of remaining revenue
consisted primarily of training fees and third-party software license revenues.
OSI will earn an additional $250,000 for implementation assistance on the first
three COCC customers. Apart from these fees, OSI does not expect to recognize
significant revenues from its agreements with Unisys and COCC until 1999 at the
earliest.


           OSI's revenues are primarily derived from two sources: (i) license
and maintenance revenues and (ii) installation and implementation fees. OSI
derives other revenues from computer hardware product sales, consulting revenues
and marketing referral commissions. License and maintenance revenues primarily
include revenues from software licenses for the OSI System and customer support
and maintenance fees for providing on-going support and product updates.
Software license fees are generally based on the bank's asset size and the
number of accounts and typically are payable upon delivery of the software. OSI
also derives software license revenues from the sale of third-party software
sublicensed by OSI. Customer support and maintenance fees are established as a
percentage of the list price for the software license and are paid annually.
Support and maintenance agreements generally have a term of 12 months and are
renewable annually. As of September 30, 1998, all users of the OSI System were
covered by support and maintenance agreements. OSI derives installation and
implementation revenues from implementation planning, system installation, data
conversion and training of customer personnel, fees for which are based on
customer size and the magnitude and complexity of the project.
    

            Effective January 1, 1997 OSI adopted AICPA Statement of Position
97-2, "Software Revenue Recognition" ("SOP 97-2"). Under SOP 97-2, OSI
recognizes software license revenue when a noncancelable license agreement has
been executed, fees are fixed and determinable, the software has been delivered,
and accepted by the customer if acceptance is required by the contract and other
than perfunctory, and collection is considered probable. Prior to 1997, OSI
recognized software license revenue in accordance with AICPA Statement of
Position 91-1, "Software Revenue Recognition" ("SOP 91-1"). Under SOP 91-1, OSI
recognized software license revenue when the software was delivered,
collectibility was probable and no other significant post-delivery obligations
remained.

           In December 1997, OSI revised its standard end user license agreement
to eliminate certain customer acceptance provisions that required the deferral
of software license revenue recognition until after implementation was
completed, which generally lagged software delivery by three to four months. The
anticipated impact of the revised end user license agreement on future results
will be to eliminate the deferral of software license revenue pending completion
of 



                                       87
<PAGE>   97

implementation. OSI expects that its future licensing arrangements will
generally be governed by the revised license agreement, although licenses sold
under the previous agreement will continue to affect revenue recognition through
1998 and certain new agreements may contain acceptance or other provisions that
have the effect of deferring software license revenue recognition. Such
differences in the timing of revenue recognition will impact the comparability
of OSI's historical revenues and operating results to future results of
operations.

   
           OSI is assessing its major internal management systems for Year 2000
readiness. This assessment includes identification of all critical information
management systems, testing the Year 2000 readiness of such systems and making
corrective fixes to non-compliant systems. OSI's plan also includes obtaining
compliance verification from third party vendors supplying critical software and
information systems to OSI, and communication with significant suppliers to
determine their plans to address their own Year 2000 issues. OSI has not
completed its assessment, but intends to take any corrective action necessary as
a result of such review. All costs associated with OSI's plan for Year 2000
compliance are being expensed as incurred. The total cost associated with
internal Year 2000 issues has not been, and is not expected to be, material to
OSI's business, financial condition or results of operations. OSI expects to
complete its Year 2000 assessment by June 30, 1999. Nevertheless, OSI may not
timely identify and remediate all significant Year 2000 problems and remedial
efforts may involve significant time and expense. Although OSI believes the OSI
System complies with Year 2000 requirements, there can be no assurance that
customers will not encounter difficulties with the OSI System arising from Year
2000 issues. In addition, there can be no assurance that Year 2000 issues will
not adversely affect third-party network or application software that is
integrated with the OSI System. Finally, there can be no assurance that any Year
2000 compliance problems of OSI or its customers or suppliers will not have a
material adverse effect on OSI's business, financial condition or results of
operations.
    

RESULTS OF OPERATIONS

           The following table sets forth certain financial data as a percentage
of revenues for the periods indicated.


   
<TABLE>
<CAPTION>
                                                                          NINE MONTHS
                                        YEAR ENDED DECEMBER 31,       ENDED SEPTEMBER 30,
                                     --------------------------      --------------------
                                      1995      1996      1997        1997          1998
                                     ------    ------    ------      ------        ------
<S>                                    <C>       <C>       <C>       <C>          <C>
Revenues:

  License and maintenance .........    81.9%     86.2%     67.8%        61.8%        61.3%
  Installation and implementation..    18.1      13.8      29.4         35.0         33.7
  Hardware and other ..............      --        --       2.8          3.2          5.0
                                     ------    ------    ------       ------       ------
     Total revenues ...............   100.0     100.0     100.0        100.0        100.0
Operating expenses:
  License and maintenance .........   142.0     107.9      27.1         31.9         17.9
  Installation and implementation..   119.1      92.0      36.3         49.8         28.3
  Hardware and other ..............      --        --       1.4          1.7          7.3
  Sales and marketing .............   148.6     103.0      32.1         43.9         27.2
  Product development .............   246.3     104.0      28.6         45.7         16.5
  General and administrative ......   149.0      63.3      23.6         33.9         22.9
  Contract termination ............      --        --        --           --         13.3
  Public offering costs............      --        --        --           --         11.1
                                     ------    ------    ------       ------       ------
     Total operating expenses .....   805.0     470.2     149.1        206.9        144.5
Loss from operations ..............  (705.0)   (370.2)    (49.1)      (106.9)       (44.5)
Interest income (expense), net ....    (1.7)     13.3       3.2          3.7          2.6
                                     ------    ------    ------       ------       ------
Net loss ..........................  (706.7)%  (356.9)%   (45.9)%     (103.2)%      (41.9)%
                                     ======    ======    ======       ======       ======
</TABLE>
    

   
   Nine Months Ended September 30, 1998 and September 30, 1997

           Revenues. Revenues increased 186.3% to $9.5 million for the nine
months ended September 30, 1998 from $3.3 million for the nine months ended
September 30, 1997. License and maintenance revenues increased 183.9% to $5.8
million for the nine months ended September 30, 1998 from $2.0 million for the
nine months ended September 30, 1997. This increase was primarily due to
increased software license revenue from increased sales of the OSI System and,
to a lesser extent, an increase in the installed base of customers under support
and maintenance agreements. OSI's installed customer base was 42, including four
banks utilizing outsourcing services provided by OSI's outsourcing partners, at
September 30, 1998 compared with 18 at September 30, 1997. In addition, during
the nine months ended September 30, 1998, OSI recognized revenues of $250,000
upon delivery of source code to COCC for the OSI System pursuant to the
agreement with COCC. For the nine months ended September 30, 1998 and 1997,
software license revenues included $969,705 and $477,648, 
    



                                       88
<PAGE>   98

respectively, related to third-party software products, primarily Oracle's
relational database management software, which were sold by OSI with the OSI
System under various sublicense agreements.

   
           Installation and implementation revenues increased 175.7% to $3.2
million for the nine months ended September 30, 1998 from $1.2 million for the
nine months ended September 30, 1997. This increase in revenues was primarily
due to implementation fees on a larger number of completed or in-process
installations.
    

   
           Hardware and other revenue increased 350.3% to $474,450 for the nine
months ended September 30, 1998 from $105,353 for the nine months ended
September 30, 1997. This increase in other revenue was primarily due to
increased hardware product sales, commission and consulting revenues.

           OSI's backlog at September 30, 1998 was approximately $9.8 million,
which represented the unrecognized portion of contractually committed software
license and implementation fees.

           Cost of revenues. Cost of license and maintenance revenues consists
primarily of sublicense fees paid on third-party software products that are sold
with the OSI System, including Oracle's relational database product,
amortization of capitalized software development costs, personnel and other
costs to produce media and documentation, and personnel and facility expenses
associated with customer support and product maintenance activities. OSI
amortizes capitalized software development costs over a three-year period.
Through March 1998, cost of revenues also included royalties paid to Banking
Spectrum Services, Inc. ("Spectrum"), a shareholder of OSI, and Banking
Spectrum, Inc. (together with Spectrum, "Banking Spectrum") to license certain
software products and for consulting and support services. In March 1998, OSI
entered into an agreement with Banking Spectrum that released it from paying
future royalties to Banking Spectrum. (See Note 13 of Notes to OSI's Financial
Statements). Cost of installation and implementation fees primarily consists of
personnel and related facility expenses associated with implementation, data
conversion and training activities. Cost of other revenue consists primarily of
computer hardware and consulting personnel costs.

           Cost of license and maintenance. Cost of license and maintenance
revenues increased 59.8% to $1.7 million for the nine months ended September 30,
1998 from $1.0 million for the nine months ended September 30, 1997. This
increase was primarily due to an increase in the number of Oracle relational
database licenses required to support a greater number of new installations,
increased amortization of capitalized software development costs and the hiring
of additional personnel in the customer support department. Cost of license and
maintenance revenues as a percent of license and maintenance revenues decreased
to 29.0% for the nine months ended September 30, 1998 from 51.6% for the nine
months ended September 30, 1997. This decline was primarily due to a larger
license and maintenance fee revenue base over which to spread costs.

           Cost of installation and implementation. Cost of installation and
implementation revenues increased 62.5% to $2.7 million for the nine months
ended September 30, 1998 from $1.6 million for the nine months ended September
30, 1997. This increase is primarily due to the hiring of additional personnel
in the implementation, data conversion and training departments. Cost of
installation and implementation revenues as a percentage of installation and
implementation revenues decreased to 83.8% for the nine months ended September
30, 1998 from 142.2% for the nine months ended September 30, 1997. This decrease
was primarily due to a larger installation and implementation revenue base and
productivity gains achieved in the implementation and training functions. OSI
anticipates that the dollar amount of installation and implementation costs will
increase in future periods as OSI expands its implementation and training staff
to accommodate future growth.

           Hardware and other. Cost of hardware and other expenses primarily
include the cost of hardware purchased from third parties for resale to
identified customers, consulting expenses and personnel costs associated with
the professional services department. Hardware and other expenses increased
1,159.8% to $689,263 for the nine months ended September 30, 1998 from $54,713
for the nine months ended September 30, 1997. This increase was primarily due to
the increase in hardware purchases, additional consulting expenses and
additional personnel in the professional services department. Hardware and other
expenses as a percentage of hardware and other revenues increased to 145.3% for
the nine months ended September 30, 1998 from 51.9% for the nine months ended
September 30, 1997. The increase was primarily due to the ramping up of the
professional services department and expenses increasing faster than revenues
generated by such department.
    

   
           Sales and marketing. Sales and marketing expenses primarily include
personnel costs associated with OSI's sales and marketing activities, including
sales commissions, travel and related overhead, and expenses incurred in
connection with trade shows, advertising, product literature and other
promotional activities. Sales and marketing expenses increased 77.2% to $2.6
million for the nine months ended September 30, 1998 from $1.5 million for the
nine months ended September 30, 1997. This increase was primarily due to an
increase in sales department personnel, increase in advertising and promotion,
increase in travel and entertainment expenses and increase in sales commissions
paid on higher revenues. Sales and marketing expenses as a percentage of total
revenues decreased to 27.2% for the nine months ended September 30, 1998 from
43.9% for the nine months ended September 30, 1997. This decrease was primarily
due to a larger revenue base over which to spread costs. OSI anticipates that
the dollar amount of its sales and marketing expenses will increase in future
periods as OSI expands its sales force and increases advertising and promotional
expenditures.
    

           Product development. Product development expenses consist of
personnel and related overhead expenses for programmers and outside consultants
involved in developing and maintaining new and existing software products. OSI
accounts for software development costs under Statement of Financial Accounting
Standards No. 86 "Accounting for the Costs of Computer Software to be Sold,
Leased or Otherwise Marketed" ("SFAS 86"). Product development expenses are
charged to expenses as incurred until technological feasibility is established.
Thereafter, costs are capitalized until the 



                                       89
<PAGE>   99
   
product is released to the market. OSI defines technological feasibility as the
point in time at which OSI has a working model of the related product.
Capitalized software costs are amortized over three years. Product development
expenses increased 3.4% to $1.6 million for the nine months ended September 30,
1998 from $1.5 million for the nine months ended September 30, 1997. This
increase was primarily due to increased expenses associated with additional
staffing offset by decreased consulting expense and increased capitalized
software (excluding a purchased ATM software system). OSI capitalized software
development costs of $251,028 and $301,077 ($235,000 represents the purchase of
an ATM software system in August 1997) for the nine months ended September 30,
1998 and 1997, respectively, in accordance with SFAS 86. Product development
expenses as a percentage of total revenues decreased to 16.5% for the nine
months ended September 30, 1998 from 45.7% for the nine months ended September
30, 1997. This decrease was primarily due to a larger revenue base over which to
spread costs. OSI anticipates that product development costs will increase in
absolute terms in future periods as OSI continues its development work on future
releases of the OSI System.
    

   
           General and administrative. General and administrative expenses
primarily include personnel costs associated with the executive, administrative
and finance staff, as well as outside professional fees and other administrative
costs. General and administrative costs increased 94.5% to $2.2 million for the
nine months ended September 30, 1998 from $1.1 million for the nine months ended
September 30, 1997. This increase was primarily due to the addition of personnel
to support OSI's growth, increased professional services, increased computer
supplies and communication costs. OSI believes that the dollar amount of its
general and administrative costs will continue to increase in future periods to
accommodate anticipated growth. General and administrative expenses as a
percentage of total revenues decreased to 22.9% for the nine months ended
September 30, 1998 from 33.9% for the nine months ended September 30, 1997. This
decrease was primarily due to a larger revenue base over which to spread costs.
    

   
           Contract termination. In January 1994, OSI entered into an agreement
with Banking Spectrum to license certain software products and for consulting
and support services. Pursuant to the agreement OSI agreed to pay Banking
Spectrum a royalty based on the licensing of software products and related
services, ranging from three percent to 17% of net revenues, based on Banking
Spectrum's involvement in the sale of such products and services. In March 1998,
OSI and Banking Spectrum entered into an agreement that terminated their
previous agreement. The agreement released OSI from any future royalty payments
to Banking Spectrum in exchange for a cash payment of $100,000 to Banking
Spectrum and fully vested options to shareholders of Spectrum to purchase
275,000 shares of Common Stock at an exercise price of $0.45 per share. The
stock options were estimated by management to have a fair value of approximately
$1.6 million. Net of amounts previously accrued, OSI recorded a contract
termination expense of approximately $1.3 million for the nine months ended
September 30, 1998.
    

   
           Public Offering Costs. In the three-month period ended September 30,
1998, OSI charged against income $1.1 million relating to costs incurred during
the second and third quarter relating to an initial public offering. No costs
were incurred after OSI entered into a definitive agreement to be acquired by
HNC.
    

   
    
           Interest income (expense), net. For the nine months ended September
30, 1998, OSI's average cash balance was higher than in 1997 resulting in higher
interest income, which was partially offset by interest expense relating to an
equipment loan.

   Years Ended December 31, 1997 and 1996

           Revenues. Total revenues increased 552.3% to $6.6 million in 1997
from $1.0 million in 1996. License and maintenance revenues increased 412.5% to
$4.5 million in 1997 from $879,138 in 1996. This increase was primarily due to
increased sales of the OSI System and, to a lesser extent, an increase in the
installed base of customers under support and maintenance agreements. For the
years ended December 31, 1997 and 1996, license revenue included $1.0 million
and $187,940, respectively, related to third party software products, primarily
Oracle's relational database. Installation and implementation revenues increased
1,296.8% to $2.0 million in 1997 from $140,255 in 1996. This increase in
installation and implementation revenues was primarily due to a larger number of
completed or in-process installations.

           Cost of license and maintenance. Cost of license and maintenance
revenues increased 63.7% to $1.8 million in 1997 from $1.1 million in 1996. This
increase was primarily due to an increase in the number of Oracle relational
database software licenses required for the increased number of new
installations, increased royalties paid to Banking Spectrum and increased
staffing in the customer support department. Cost of license and maintenance
revenues as a percent of license and maintenance revenues decreased to 40.0% in
1997 from 125.1% in 1996. This decrease was primarily due to a larger revenue
base over which to spread costs, including larger software license fees and
support and maintenance revenue.

           Cost of installation and implementation. Cost of installation and
implementation revenues increased 157.8% to $2.4 million in 1997 from $937,541
in 1996. This increase was primarily attributable to increased staffing in the
implementation, data conversion, and training departments to support OSI's
growth. Cost of installation and implementation revenues as a percentage of
installation and implementation revenues decreased to 123.4% in 1997 from 



                                       90
<PAGE>   100

668.5% in 1996. This decrease was primarily due to a larger installation and
implementation revenue base and productivity gains achieved in the
implementation and training functions as a result of a larger number of
installations.

           Sales and marketing. Sales and marketing expenses increased 102.9% to
$2.1 million in 1997 from $1.1 million in 1996. This increase was primarily due
to an increase in sales and marketing personnel, increased sales commissions
paid on higher revenues and increased advertising and promotion expenses and
increased travel and entertainment expenses. Sales and marketing expenses as a
percentage of total revenues decreased to 32.1% in 1997 from 103.1% in 1996.
This decrease was primarily due to a larger revenue base over which to spread
costs.

           Product development. Product development expenses increased 79.4% to
$1.9 million in 1997 from $1.1 million in 1996. This increase was primarily due
to increased staffing and consulting fees incurred in connection with continued
development of OSI's software products. During 1997 and 1996, OSI capitalized
software development costs of $455,078 and $153,209, respectively, in accordance
with SFAS 86. Amounts capitalized in 1997 included $240,000 related to the
acquisition of automated teller machine ("ATM") management software from a third
party. Product development expenses as a percentage of total revenues decreased
to 28.6% in 1997 from 104.0% in 1996. This decrease was primarily due to a
larger revenue base over which to spread costs.

           General and administrative. General and administrative expenses
increased 143.2% to $1.6 million in 1997 from $645,334 in 1996. This increase
was primarily due to the hiring of additional accounting and executive personnel
required to support OSI's growth. General and administrative expenses as a
percentage of total revenues decreased to 23.6% in 1997 from 63.3% in 1996. This
decrease was primarily due to a larger revenue base over which to spread costs.

           Interest income (expense), net. During 1997, OSI's average cash
balance was higher than in 1996, resulting in higher interest income, which was
partially offset by interest expense relating to an equipment loan.

   Years Ended December 31, 1996 and 1995

           Revenues. Total revenues increased 280.2% to $1.0 million in 1996
from $268,141 in 1995. License and maintenance revenues increased 300.3% to
$879,138 in 1996 from $219,620 in 1995. This increase was primarily due to
increased sales of the OSI System and, to a lesser extent, an increase in the
installed base of customers under support and maintenance agreements. For the
years ended December 31, 1996 and 1995, license revenue included $187,940 and
$91,632, respectively, related to third-party software products, primarily
Oracle's relational database. Installation and implementation revenues increased
189.1% to $140,255 in 1996 from $48,521 in 1995. This increase in service fees
was primarily due to the increase in the number of installations in 1996.

           Cost of revenues. Cost of license and maintenance revenues increased
188.9% to $1.1 million in 1996 from $380,793 in 1995. This increase was due to
increased license fees paid to third-party software providers, primarily Oracle,
increased royalties paid to Banking Spectrum and increased system documentation
personnel. Cost of installation and implementation revenues increased 193.7% to
$937,541 in 1996 from $319,213 in 1995. This increase was primarily attributable
to increased staffing in the implementation, data conversion and training
functions required to support the growth in customer installations as noted
above.

           Sales and marketing. Sales and marketing expenses increased 163.7% to
$1.1 million in 1996 from $398,496 in 1995. This increase was primarily due to
an increase in the number of sales personnel, increased travel and entertainment
expenses and increased advertising and promotions. Sales and marketing expenses
as a percentage of total revenues decreased to 103.1% in 1996 from 148.6% in
1995. This decrease was primarily due to a larger revenue base over which to
spread costs.

           Product development. Product development expenses increased 60.5% to
$1.1 million in 1996 from $660,510 in 1995. Product development expense
increased primarily due to increased staffing and consulting fees required to
support continued development of OSI's software products. During 1996 and 1995,
OSI capitalized software development costs of $153,209 and $119,514,
respectively, in accordance with SFAS 86. Product development expenses as a
percentage of total revenues decreased to 104.0% in 1996 from 246.3% in 1995.
This decrease was primarily due to a larger revenue base over which to spread
costs.

           General and administrative. General and administrative expenses
increased 61.5% to $645,334 in 1996 from $399,576 in 1995. The increase in
expenses was primarily due to an increase in OSI's telephone and communication



                                       91
<PAGE>   101

expenses, increased computer and office supplies and increased travel and
entertainment expenses. General and administrative expenses as a percentage of
total revenues decreased to 63.3% in 1996 from 149.0% in 1995. This decrease was
primarily due to a larger revenue base over which to spread costs.

           Interest income (expense), net. During 1995, OSI was funding
operations with bridge loans from existing investors until a December 1995
preferred stock sale. The interest on the bridge loans exceeded the interest
income earned on the operating account balance during 1995.



                                       92
<PAGE>   102


SELECTED QUARTERLY RESULTS OF OPERATIONS

           The following table sets forth unaudited quarterly results of
operations of OSI for each of the quarters in the year ended December 31, 1997
and the nine months ended September 30, 1998. In management's opinion, this
unaudited information has been prepared on the same basis as the audited
Financial Statements and includes all adjustments (consisting only of normal
recurring adjustments) necessary for a fair presentation of the information for
the quarters presented, when read in conjunction with OSI's Financial Statements
and Notes thereto included elsewhere in this Proxy Statement/Prospectus.

   
<TABLE>
<CAPTION>
                                                                 THREE MONTHS ENDED
                                      --------------------------------------------------------------------------------------
                                      MAR. 31,     JUNE 30,     SEPT. 30,    DEC. 31,    MAR. 31,     JUNE 30,     SEPT. 30,
                                       1997         1997          1997        1997         1998        1998          1998
                                      -------      -------      -------      -------     -------      -------      --------
                                                                   (IN THOUSANDS)
<S>                                   <C>          <C>          <C>          <C>         <C>          <C>          <C>
Revenues:
  License and maintenance .........   $   732      $   571      $   742      $ 2,460     $ 1,413      $ 1,938      $ 2,454
  Installation and implementation..       244          389          526          800         891        1,137        1,168
  Hardware and other ..............         6           26           73           80          30          360           85
                                      -------      -------      -------      -------     -------      -------      -------
     Total revenues ...............       982          986        1,341        3,340       2,334        3,435        3,707
Operating expenses:
  License and maintenance .........       345          302          408          747         523          499          663
  Installation and implementation..       600          498          551          768         688          871        1,120
  Hardware and other ..............         6            8           40           38         109          384          196
  Sales and marketing .............       458          496          500          678         784          778        1,015
  Product development .............       472          523          517          390         444          475          645
  General and administrative ......       324          416          381          447         643          703          834
  Contract termination ............        --           --           --           --       1,265           --           --
  Public offering costs ...........        --           --           --           --          --           --        1,055
                                      -------      -------      -------      -------     -------      -------      -------
     Total operating expenses .....     2,205        2,243        2,397        3,068       4,456        3,710        5,528
Income (loss) from operations .....    (1,223)      (1,257)      (1,056)         272      (2,122)        (275)      (1,821)
Interest income, net ..............        44           31           46           88          95           86           66
                                      -------      -------      -------      -------     -------      -------      -------
Net income (loss) .................   $(1,179)     $(1,226)     $(1,010)     $   360     $(2,027)     $  (189)     $(1,755)
                                      =======      =======      =======      =======     =======      =======      =======
</TABLE>
    

   
           The following table sets forth unaudited quarterly results of
operations as a percentage of revenues for each of the quarters in the year
ended December 31, 1997 and the nine months ended September 30, 1998.
    

   
<TABLE>
<CAPTION>
                                                               THREE MONTHS ENDED
                                      --------------------------------------------------------------------------------------
                                      MAR. 31,     JUNE 30,     SEPT. 30,    DEC. 31,    MAR. 31,     JUNE 30,     SEPT. 30,
                                        1997        1997         1997         1997        1998         1998          1998
                                      ------       ------       ------       ------      ------       ------       --------
<S>                                   <C>          <C>          <C>          <C>         <C>          <C>          <C>
Revenues:
  License and maintenance .........     74.5%        57.9%        55.3%        73.6%       60.5%        56.4%      66.2%
  Installation and Implementation..     24.9         39.5         39.2         24.0        38.2         33.1       31.5
  Hardware and other ..............      0.6          2.6          5.5          2.4         1.3         10.5        2.3
                                      ------       ------       ------       ------      ------       ------      -----
  Total revenues ..................    100.0        100.0        100.0        100.0       100.0        100.0      100.0
Operating expenses:
  License and maintenance .........     35.2         30.6         30.4         22.4        22.4         14.5       17.8
  Installation and Implementation..     61.0         50.5         41.1         23.0        29.5         25.4       30.2
  Hardware and other ..............      0.6          0.8          3.0          1.1         4.7         11.1        5.3
  Sales and marketing .............     46.7         50.3         37.3         20.3        33.6         22.7       27.4
  Product development .............     48.0         53.1         38.5         11.7        19.0         13.8       17.4
  General and administrative ......     32.9         42.1         28.4         13.3        27.5         20.5       22.5
  Contract termination ............       --           --           --           --        54.2           --         --
  Public offering costs ...........       --           --           --           --          --           --       28.5
                                      ------       ------       ------       ------      ------       ------      -----
     Total operating expenses .....    224.4        227.4        178.7         91.8       190.9        108.0      149.1
Income (loss) from operations .....   (124.4)      (127.4)       (78.7)         8.2       (90.9)        (8.0)     (49.1)
Interest income, net ..............      4.4          3.1          3.4          2.6         4.1          2.5        1.8
                                      ------       ------       ------       ------      ------       ------      -----
Net income (loss) .................   (120.0)%     (124.3)%      (75.3)%       10.8%      (86.8)%       (5.5)%    (47.3)%
                                      ======       ======       ======       ======      ======       ======      =====
</TABLE>
    

           OSI's revenues and operating results have varied substantially from
quarter to quarter. OSI's quarterly operating results may continue to fluctuate
due to a number of factors, including the timing, size and nature of OSI's
licensing transactions, lengthy and unpredictable sales cycles, the timing of
introduction and market acceptance of new products or product enhancements by
OSI or its competitors, product and price competition, the relative proportions
of revenues derived from license fees and services, changes in OSI's operating
expenses, software bugs or other product quality 



                                       93
<PAGE>   103

problems, personnel changes and fluctuations in economic and financial market
conditions. Accordingly, OSI believes that period-to-period comparisons of its
results of operations are not necessarily meaningful and the results of
operations for any quarter are not necessarily indicative of future results of
operations.

           Revenues of $3.3 million for the three months ended December 31, 1997
included software license and implementation revenues of $1.6 million associated
with two larger banks (assets greater than $1 billion) that were implemented in
that quarter.

LIQUIDITY AND CAPITAL RESOURCES

   
           OSI has financed its operations primarily from the sale of preferred
stock and from a credit line for equipment purchases. OSI had net working
capital of $3.7 million at September 30, 1998, including cash and cash
equivalents totaling $5.6 million.


           Cash used in operating activities was $1.2 million, $1.0 million,
$3.9 million and $1.7 million for the nine months ended September 30, 1998 and
for the years ended December 31, 1997, 1996 and 1995, respectively. Cash used in
operations during each of these periods was primarily due to net losses and an
increase in accounts receivable partially offset in each period by increases in
short-term liabilities, including deferred revenues. In 1996, the cash used in
operating activities was also attributable to expenditures for deferred project
costs. In 1997, cash flow from operations was favorably impacted by a reduction
in deferred project costs.

           Cash used in investing activities was $1.1 million, $812,334,
$850,083 and $212,037 for the nine months ended September 30, 1998, and for the
years ended December 31, 1997, 1996 and 1995, respectively. Cash used during
such periods was to acquire property and equipment and for capitalized software
development costs. OSI currently has no significant capital spending or purchase
commitments, but expects to continue to engage in capital spending in the
ordinary course of business.

           Cash provided by financing activities was $342,119, $5.0 million,
$5.3 million and $5.2 million for the nine months ended September 30, 1998, and
for the years ended December 31, 1997, 1996 and 1995, respectively. During 1997,
1996 and 1995, OSI received $5.0 million, $5.5 million, and $5.1 million,
respectively, of net proceeds from the sale of preferred stock. In addition, OSI
received $60,000 and $120,000 in proceeds during 1996 and 1995, respectively,
from a subscription note receivable.

           In 1995, OSI received and repaid $1.0 million in bridge loans from
existing investors. In September 1996, OSI entered into a $250,000 equipment
line of credit with a bank. The equipment line allowed for draw downs through
September 1997 with the outstanding borrowings on the equipment line converting
to a $104,002, nine percent term loan payable in 36 months beginning in October
1997. As of September 30, 1998, OSI had no outstanding balance under this term 
loan.
    

           OSI believes that cash and cash equivalents on hand will, in light of
anticipated future cash flows, be sufficient to meet OSI's working capital
requirements for the next twelve months.



                                       94
<PAGE>   104

                                 BUSINESS OF OSI

           OSI is a leading provider of client/server core processing software
and related services to small to mid-size banks and credit unions. OSI has
developed The Complete Banking Solution and The Complete Credit Union Solution
(the "OSI System"), which are fully-integrated suites of banking and credit
union applications that operate in a Microsoft Windows NT environment with an
Oracle relational database. OSI's software supports all of an institution's core
processing requirements, including deposits and loans, teller functions, home/
Internet banking and platform automation. OSI's open and flexible client/server
architecture is designed to enable its customers to reduce their core processing
and operational costs and leverage customer information to improve retention and
identify potential cross-selling opportunities. The OSI System interfaces to
third-party applications that are commonly used in banks and credit unions,
including check processing, ATMs and general ledger applications. The OSI System
enables banks and credit unions to enhance customer satisfaction and compete
more effectively in the financial services industry.

INDUSTRY BACKGROUND

           Currently, there are over 20,000 banking and depository institutions
in the United States with assets of up to $3 billion, including small to
mid-size commercial banks, thrifts and credit unions. OSI believes that these
institutions, which have traditionally competed on personalized service, are
facing increasing competitive pressures to improve their efficiencies in the
areas of customer service, operations and marketing. In addition, the evolving
requirements of the electronic marketplace demand that banks expand their
traditional services to include ATMs, telephone banking and home banking through
personal computers and the Internet. Banks and depository institutions of all
sizes are also experiencing increased competitive pressures from non-bank
competitors which, as a result of the deregulation of the financial services
industry, can offer products and services traditionally marketed by banks.

           In responding to these trends, small to mid-size banks and credit
unions are increasingly seeking to implement information technology systems that
will enable them to increase the efficiency of their operations, offer a broader
array of services and provide enhanced levels of customer service. These
institutions have traditionally fulfilled their information technology needs
through legacy computer systems, operated either by the institution or a service
bureau on an outsourced basis. These systems, which operate in large mainframe
or minicomputer environments, are designed primarily to batch process a large
number of transactions and create centralized financial records. Nightly batch
sessions are typically required to update each customer's account with the
business day's transactions. As a result, banks utilizing legacy systems
typically do not offer their customers real-time processing of transactions, a
feature that is becoming an increasingly important operating requirement.
Moreover, legacy systems typically store data in non-relational, sequentially
indexed files. In this environment, retrieval of customer or other information
can be burdensome and time consuming and limits an institution's flexibility in
meeting changing customer service requirements. The centralized processing and
proprietary architecture of these systems is not designed to easily support
analysis for decision-making or integrate with other business applications used
throughout the enterprise. Financial institutions relying on legacy systems
often find it difficult to conform their business processes and reporting to the
architecture of the system and are not able to easily adapt the system to their
evolving needs.

           The need to improve customer service levels, enhance operating
efficiencies and lower costs has contributed to the growing acceptance of the
client/server model of computing based on open, industry-standard operating
environments and relational databases. In a client/server environment, servers
provide shared access to data and applications, while client devices such as
personal computers and workstations provide the user interface and local
processing functions. Client/server systems can improve information sharing by
providing access at each desktop to critical customer and transaction data and
business applications, which had historically been restricted or difficult to
access in legacy environments. Client/server applications enable organizations
to streamline core business practices and reporting and to make faster, more
informed decisions. The client/server model is also scalable as capacity can be
increased by upgrading the server or linking multiple servers. In addition, the
client/server model offers flexibility in that additional functionality can
easily be provided through third-party applications.

           OSI believes that, until recently, the adoption of client/server
systems in many banks and credit unions has lagged other industries due to the
limited number of suppliers of open client/server systems designed specifically
to address the core processing requirements of such institutions. In part, this
has been attributable to the industry's long-standing reliance on legacy systems
and the high-volume processing requirements of larger banks. Among smaller
banking institutions, which OSI believes are best positioned to benefit from the
implementation of client/server systems, the adoption of such systems has been
hampered by the absence of cost effective client/server systems designed
specifically for use by such 



                                       95
<PAGE>   105

institutions. OSI believes that fewer than 200 small to mid-size banks and
credit unions in the United States have implemented open client/server core
processing systems.

           OSI believes that banks and credit unions today are seeking
information technology solutions that combine the performance, reliability and
security associated with legacy-based systems with the flexibility, ease-of-use,
scalability and reduced cost of ownership associated with client/server systems.
Banks and credit unions require systems that can be easily integrated with other
applications used in the enterprise, provide real-time transaction processing
and comply with applicable regulatory requirements. Banks and credit unions also
require core processing systems that are able to accommodate new and emerging
technologies, such as ATMs, telephone banking and home banking via personal
computers and the Internet. In addition, these institutions require systems that
are Year 2000 compliant. Banks and credit unions are also seeking information
technology solutions that offer quick and effective access to customer and
account data in order to offer better, more customized services, monitor trends
and performance and cross-sell services and products. A client/server core
processing solution must be able to meet all of these requirements to enable
banks and credit unions to achieve a competitive advantage in their markets
through improved customer service, lower costs and enhanced access to customer
information.

THE OSI SOLUTION

           The OSI System enables financial institutions to process transactions
and access critical customer and account data through a suite of open,
distributed application modules that operate in a Microsoft Windows NT
environment with an Oracle relational database. OSI's solutions are designed to
provide its customers with the following benefits:

      -    Fully-Integrated Solution. The OSI System supports all of an
           institution's core processing requirements, including those of its
           branch offices. The OSI System accommodates telephone banking and
           home banking via personal computers and the Internet, and provides
           ATM management capabilities. All components of the OSI System utilize
           a common relational database and operating system. This architecture
           allows a bank to provide its customers with real-time information
           concerning their accounts and to create real-time management reports.
           The OSI System also eliminates potential errors arising from the
           maintenance of multiple databases and enables institutions to change
           their business processes without requiring the modification of the
           underlying data model.

      -    Enhanced Customer Service Through Real-Time Processing. The OSI
           System allows a bank's customers and employees to access and process
           information on a real-time basis, which enables a bank's customers to
           receive up to the minute account and transaction information from any
           branch, telephone, home or Internet location. The OSI System also
           enables bank employees to quickly identify customers and gather
           accurate and current information about the entire customer
           relationship. Availability of this information enables institutions
           to improve their level of customer service and provide them with
           incremental opportunities for marketing additional products and
           services.

      -    Open Architecture. The OSI System operates in an open environment
           using the Microsoft Windows NT operating system and the Oracle
           relational database management system, which are installed on
           non-proprietary hardware. The flexible, open architecture of the OSI
           System facilitates the use of popular, off-the-shelf third-party
           software and the addition of more processing capability as the
           institution's requirements increase.

      -    Reduced Cost of Ownership. The OSI System can reduce the overall cost
           of ownership of a financial institution's core system. By integrating
           core banking functions, which have historically run on separate
           systems, into one seamless environment, the OSI System enables its
           customers to achieve operational efficiencies. The OSI System can
           also reduce the costs that would otherwise be associated with the
           ongoing maintenance of legacy systems. In addition, the time and
           expense required to adapt the OSI System to accommodate changing
           business processes and regulatory requirements is less than that
           required with a typical legacy system. The ability of the OSI System
           to operate across a broad range of popular hardware provides
           customers with increased flexibility and the ability to select the
           most cost-effective system.

STRATEGY

           OSI's objective is to be the leading supplier of enterprise-wide
client/server software for small to mid-size banks and credit unions. OSI's
strategy for achieving this objective includes the following:



                                       96
<PAGE>   106

      -    Focus on Small to Mid-Size Banks and Credit Unions. OSI will continue
           to focus on providing core processing solutions to small to mid-size
           banks and credit unions, which OSI defines as institutions with
           assets up to $3 billion. OSI believes that the client/server model of
           computing is particularly well-suited for institutions in this
           market. These institutions, unlike larger banks, typically do not
           require extensive customization in connection with the implementation
           of a banking system which makes it easier for them to realize the
           benefits of client/server core processing systems in a cost-effective
           manner. OSI believes that the demand for client/server systems in
           this market is increasing as a result of these factors.

      -    Expand Distribution Through Outsourcing Solutions. A number of small
           to mid-size banks and credit unions outsource their core processing
           systems to third-party service providers. These third-party service
           providers typically choose one or more significant banking solutions
           on which they base their outsourcing services. OSI has established
           strategic relationships with BISYS, a major national outsourcing
           provider, and COCC, a major regional outsourcing provider, under
           which these third parties provide outsourced processing services to
           the financial services industry using the OSI System. OSI plans to
           continue to jointly market the OSI System with its outsourcing
           partners to expand its installed customer base.

      -    Leverage Customer Base. OSI intends to continue to leverage its
           installed customer base by expanding the range of complementary
           products and services available to its customers. OSI generates
           recurring revenues by entering into maintenance arrangements with its
           customers that provide for annual service fees. As the asset size or
           number of accounts of a financial institution increases, or as
           additional application modules or services are provided, customers
           typically pay incremental license and maintenance fees. OSI plans to
           continue to expand its professional services offerings to its
           installed base of customers as they implement additional application
           modules.

      -    Maintain Product Leadership. OSI believes that the open client/server
           architecture of the OSI System provides it with competitive
           advantages over other core processing systems. For example, the OSI
           System offers on-line, real-time transaction processing capabilities
           that are not available in many competitive systems, and OSI recently
           announced the introduction of a home/Internet banking module
           supporting the Open Financial Exchange ("OFX") standard, which
           enables customers to access bank services using personal computers
           and the Internet. OSI's open architecture enables it to utilize
           leading, non-proprietary software and hardware to provide
           comprehensive functionality. OSI intends to extend its technological
           leadership by continuing to add new applications, integrate new
           technologies and expand the functionality of its system.

TECHNOLOGY

           OSI developed the OSI System to enable customers to realize the
advantages of client/server architectures. The OSI System is designed to offer
the following benefits: (i) flexible functionality, scalability, and high
performance, (ii) lower total cost of ownership, (iii) the ability to operate
either in real-time or batch processing mode and (iv) integration with
third-party applications and emerging technologies. OSI believes that the OSI
System achieves these objectives through an open architecture that is based on
leading technologies in the areas of operating systems, relational databases,
graphical user interfaces and report generation tools.

           The foundation of the OSI System is an enterprise-wide relational
database. The OSI System uses relational database software from the industry's
leading supplier, Oracle Corporation. The OSI System's functionality is
implemented through application modules, each of which performs a specific core
processing function, that share the data in the relational database. This
approach allows for database normalization and business modeling. Through
database normalization, data is organized in tables that are easily accessible
through a variety of query tools as well as the application modules. The OSI
System's data model consists of over 600 tables, which OSI believes is
substantially greater than the number of tables in the data models of competing
solutions. As a result, a higher degree of independence between a customer's
business processes and underlying data is achieved and the OSI System is more
scalable and adaptable to changing business needs. New application modules may
be developed or existing modules may be altered as required without having to
change the underlying data model.

           The OSI System is based on a single, enterprise-wide database as
opposed to a distributed database in which the database is spread among two or
more components, typically resident on different computers. The principal
benefit of an architecture using a single enterprise-wide database is that it
permits real-time processing so that, for example, transactions are immediately
reflected in a bank or credit union customer's account. This contrasts with a
batch processing approach in which all accounts are updated only at scheduled
intervals, typically at the end of the business day. The OSI System may 



                                       97
<PAGE>   107

be configured to operate in either batch mode or a hybrid batch/real-time mode
for those banks or credit unions that do not require or desire real-time
processing.

           The OSI System is a 32-bit Microsoft Windows NT application that
operates in an open systems environment. The system does not require any
proprietary hardware components and is currently deployed on a wide range of
client and server platforms. The system features multi-level security that takes
advantage of the features of the underlying operating system and relational
database as well as offers some that are indigenous to the system. The OSI
System also interfaces to a broad range of third-party applications and
peripherals that are commonly used in banks and credit unions.

PRODUCTS

           The OSI System is an enterprise-wide solution that addresses the core
processing requirements of small to mid-size banks and credit unions and other
financial institutions. The OSI System consists of software application modules
that operate on a fully-integrated basis and is designed to be Year
2000-compliant. OSI recently released its OSI/ATM Server, the OSI home/Internet
banking module and a 32-bit version of the OSI System. In addition, OSI markets
third-party applications that are commonly used in banks and credit unions.
Current prices for the base OSI System software license range from approximately
$140,000 to $1.5 million, depending on asset size and number of customer
accounts.

Application Modules

           The following table describes certain application modules of the OSI
System:

<TABLE>
<CAPTION>
APPLICATION                                                                           DESCRIPTION
- -----------                                                                           -----------
<S>                                                            <C>
Customer Service.........................................      Provides a quick and  comprehensive  view of each customer
                                                               relationship;  maintains  customer's picture and signature
                                                               for  recognition;  supports opening and maintenance of all
                                                               types of accounts and provides a measure of an  individual
                                                               customer's  profitability;  enables tellers to complete an
                                                               entire   transaction   on-line  in  the  presence  of  the
                                                               customer.

Comprehensive Lending....................................      Provides  comprehensive  management of all loans,  whether
                                                               mortgage, consumer or commercial,  including establishment
                                                               of  escrow,   insurance  and  tax  accounts;  can  provide
                                                               loan-loss reserve  calculations  based on risk ratings and
                                                               loan  classifications;  includes "what if" loan calculator
                                                               and amortization schedule.

Depository System........................................      Supports  all  forms  of  deposit  instruments,  including
                                                               passbook  and   statement   savings,   club  accounts  and
                                                               checking   accounts,   share   drafts   (credit   unions),
                                                               certificates  of deposit and time deposits and  repurchase
                                                               agreements.

Teller Application.......................................      Provides  a teller  with  real-time  access to the  bank's
                                                               database  and a complete  profile  of the  bank's  clients
                                                               (including a  customer's  picture and  signature);  easily
                                                               navigated  by the teller and does not require  transaction
                                                               codes.

General Ledger Interface.................................      Easy-to-use   module  designed  to  manage  interfaces  to
                                                               popular general ledger systems.

</TABLE>

                                       98
<PAGE>   108


<TABLE>
<S>                                                            <C>

Bank and Branch Operations...............................      A comprehensive and secure administrative  management tool
                                                               for determining  user  accessibility,  security,  hours of
                                                               operation, cash boxes and authorization structures.

End of Day Production....................................      Identifies  and  schedules  all  end  of  day  processing,
                                                               including  updating of interest,  fees and other  charges,
                                                               and  produces  daily   production   reports  and  customer
                                                               statements.

Executive Information....................................      Enables management to monitor bank's  performance  through
                                                               on-line  queries  of any  product  or  branch;  tools  can
                                                               generate  new reports  in graphical  or tabular form based 
                                                               upon ad hoc information requests.

External File Manager....................................      Manages  all data that must be entered  into the  database
                                                               from external  sources,  including  check  clearings,  ACH
                                                               (automatic  clearing  house),  loan  origination  and  ATM
                                                               transaction files.

Payroll..................................................      Enables updating of all payroll accounts  provided through
                                                               an ACH format or from outside payroll systems.

   
Product Manager..........................................      Enables bank to design and promote new loan,  checking and
                                                               deposit   products   and  to   monitor   current   product
                                                               offerings; uses fill-in-the-blank, easy-to-follow  screens
                                                               with  user  defined  fees and rate  schedules  that  allow
                                                               for unlimited tiering.
    

IRS/Year-End Reporting...................................      Supports  year-end  IRS  reporting  information  for  both
                                                               standard and specialized forms.

Forms Integration........................................      Integrates  generation  of  forms,  includes  new  account
                                                               documents,  disclosures,  signature  cards and  passbooks;
                                                               eliminates need to inventory pre-printed forms.
</TABLE>

   OSI/ATM Server

           The OSI/ATM Server is an ATM management system that provides banks
with the capability to directly manage their own ATM network or interface with
regional ATM networks. The OSI/ATM Server enables customers to reduce costs
associated with ATM systems and provides features such as real-time, single
balance update capabilities, support for multiple ATM transactions and
processing and authorization options. In addition, the OSI/ATM Server enables
banks to define their own operating parameters without the need for program
modifications. The system, which operates on Stratus computers, is designed to
provide fault-tolerant reliability. The OSI/ATM Server is fully integrated with
the OSI System. Current list prices for the OSI/ATM Server module range from
approximately $45,000 to $90,000.

   Home/Internet Banking Module

           OSI's home/Internet banking module enables customers to remotely
access an online banking system through which a customer can transfer funds from
transaction accounts, make balance inquiries, generate instant statements and
monitor account activity. OSI's system supports the OFX standard, which enables
the system to interface to bank services that use a variety of devices to
originate customer transactions. Through the OFX standard, the OSI System can
also be integrated with commonly-used personal financial management products,
such as Microsoft's Money 98 and Intuit's Quicken. Current list prices for the
home/Internet banking module range from approximately $50,000 to $100,000.



                                       99
<PAGE>   109

   Third-Party Applications

           The open architecture of the OSI System facilitates the integration
of third-party applications, and OSI offers various third-party applications for
use with the OSI System. Such applications include: asset/liability management,
check and statement imaging, collection management, disaster recovery planning,
general ledger, voice response, loan origination and on-line ATM interface.

SALES AND MARKETING

   
           OSI markets its software and services primarily through its direct
sales force. As of September 30, 1998, OSI employed 25 sales and marketing
personnel.
    

           OSI's marketing program includes direct mail, networking,
telemarketing, advertising in industry specific trade journals and periodicals,
seminars and trade shows. OSI maintains an Internet web site from which
prospective customers can retrieve and view product information. OSI has
established an alliance with Unisys PAAG under which Unisys has exclusive rights
to market the OSI System in Asia (except Japan), South Africa and certain other
countries. OSI has established strategic relationships with Oracle Corporation,
Compaq Computer Corporation and Stratus Computer, Inc. providing for joint
marketing efforts.

           Historically, a significant portion of all banks and credit unions
have chosen to satisfy their information technology needs through service
bureaus. To address this market, OSI has entered into software license and
marketing agreements with BISYS and COCC under which these third parties provide
outsourced core processing services to the financial services industry using the
OSI System.

   
           Pursuant to a Software License and Marketing and Distribution
Agreement with BISYS, OSI has granted BISYS the exclusive right in the United
States, subject to certain exceptions (including OSI's right to use regional
providers of outsourcing services), to use the OSI System to provide outsourcing
of core processing services to banks and credit unions. The OSI System may not
be sublicensed by BISYS, and all proprietary rights to the OSI System remain
with OSI. This right becomes non-exclusive if BISYS fails to obtain a specified
number of customer contracts, or pay the minimum required license and
maintenance fees in each of these first three years. BISYS has agreed that OSI
shall be its exclusive provider of client/server core processing systems for
BISYS during the term of the Agreement. Royalty payments under the Agreement are
consistent with those paid by other outsourcing providers of the OSI System. OSI
has agreed to provide BISYS with pricing and other terms at least as favorable
as those granted by OSI to other outsourcing providers. Pursuant to the
agreement, the parties engage in joint marketing of each other's products and
services and refer potential customers to each other. As of September 30, 1998,
BISYS had entered into outsourcing agreements with nine institutions.
    

   
           OSI has also entered into a License and Marketing Agreement with COCC
under which OSI has granted COCC certain exclusive rights to use the OSI System
to provide outsourced core processing services to banks and credit unions in the
New England states and New York. COCC must meet certain customer milestones to
maintain its exclusivity. OSI receives license fees with respect to outsourced
data processing agreements entered into by COCC, subject to a cumulative maximum
payment, as stipulated in the agreement. As of September 30, 1998, COCC had 
entered into outsourcing agreements with four institutions.
    

CUSTOMERS

   
     OSI's customers are primarily small to mid-size banks and credit unions,
typically with fewer than ten branches, that serve the banking needs of their
local communities. These banks are often the primary local providers of savings
accounts and consumer, mortgage and commercial loans in the markets they serve.
The majority of OSI's customers are located in the Northeast region, although
OSI is expanding its presence in other regions. As of September 30, 1998, 42
banks and one credit union utilized the OSI System. An additional 41 banks,
including one credit union, were in various stages of implementation, including
13 banks owned by three bank holding companies and nine banks utilizing
outsourcing services provided by OSI's outsourcing partners. The average asset
size of OSI's current customer base is approximately $192 million.
    

   
     No customer accounted for 10% or more of total revenues in the nine months
ended September 30, 1998. Sales to The Savings Bank of Manchester and The
Savings Bank of Utica accounted for approximately 17% and 15% of total revenues,
respectively, in the year ended December 31, 1997. Sales to American Federal
Bank, Gloversville Federal Savings and Loan Association, Dean Cooperative Bank
and Signet Bank accounted for
    



                                      100
<PAGE>   110

approximately 38%, 22%, 20% and 14% of total revenues, respectively, in the year
ended December 31, 1996. Sales to Seneca Falls Savings Bank and The Simsbury
Savings Bank accounted for approximately 56% and 43% of total revenues,
respectively, in the year ended December 31, 1995. OSI anticipates that no
customer will account for more than 10% of revenues in the year ending December
31, 1998.

SERVICES

   
           OSI provides comprehensive implementation and training services to
customers who purchase the OSI System. An implementation team works with the
customer through all phases of the project, including software installation,
data conversion, education and training. Full implementation of the OSI System
typically occurs over a 14 to 24 week period, depending on the complexity of the
conversion. OSI also provides post-implementation customer support and
maintenance. As of September 30, 1998, OSI had 69 employees dedicated to
implementation, training, support and maintenance.
    

      -    Implementation. OSI assigns to each customer a project manager who
           coordinates all activities related to the implementation of the OSI
           System. OSI also assigns conversion programmers who convert a bank's
           current account data to the relational database in the OSI System.
           Data conversion activities include data mapping, program development,
           testing, data auditing and a complete trial conversion prior to the
           final implementation date.

      -    Training. OSI offers a comprehensive education and training program
           to its customers. OSI offers training classes at its headquarters in
           Connecticut and hands-on application training at the customer site
           prior to installation of the OSI System. In addition, on-site
           training for ancillary products is available upon request. OSI also
           assists customers desiring to adapt the OSI System to particular
           needs, including customer-specific software features, reports or
           regulatory requirements.

      -    Support and Maintenance. Support and maintenance personnel provide
           immediate telephone response service during normal working hours,
           supplemented by on-call support 24 hours a day, seven days a week.
           OSI also provides product support services through the Internet,
           electronic mail and facsimile. In addition, OSI offers remote product
           support services whereby OSI's support team directly connects to a
           customer's server to troubleshoot or perform routine maintenance. OSI
           enters into maintenance agreements with its customers pursuant to
           which they pay an annual maintenance fee, based on a percentage of
           the license fee, over the term of the software license. See "OSI
           Management's Discussion and Analysis of Financial Condition and
           Results of Operations -- Overview."

PRODUCT DEVELOPMENT

           OSI plans to continue to invest significant resources to maintain and
enhance its current product and service offerings. OSI's principal product
development focus is on: (i) enhanced functionality of the OSI System through
the development of new features and improvements to existing applications
modules, (ii) software updates as new versions of the Windows NT operating
system and Oracle relational database are released and (iii) tools to automate
the process of converting a customer's legacy data to the OSI System.

   
           As of September 30, 1998, OSI employed a staff of 32 employees
engaged in product development. OSI's product development expenditures were
approximately $1.6 million, $1.9 million, $1.1 million and $660,510 for the nine
months ended September 30, 1998 and the years ended December 31, 1997, 1996 and
1995, respectively.
    

COMPETITION

           The financial services software market is intensely competitive and
subject to rapid technological change. Competitors vary in size and in the scope
and breadth of products and services offered. OSI encounters competition in the
U.S. from a number of competitors which offer alternative client/server systems
to banks and credit unions, including M&I Eastpoint, Phoenix International Ltd.,
Inc. and Prologic Corporation, and a number of competitors, including Fiserv,
Inc., NCR Corporation, EDS, Marshall & Ilsley Corporation, Jack Henry &
Associates, Inc., ALLTEL Corporation and Kirchman Corporation, all of which
offer legacy core processing systems or outsourcing alternatives to banks and
credit unions. OSI also competes against a number of smaller, regional
competitors. In addition to these competitors, OSI competes internationally with
Misys plc Banking Division (including Midas-Kapiti International, Inc., Kindle
Banking Systems and ACT Financial Systems), Sanchez Computer Associates, Inc.
and Financial Network Services, among others. OSI also competes with other core
processing alternatives, including in-house applications, which were either
developed 




                                      101
<PAGE>   111

internally or purchased from third-party vendors, and outsourcing, either as a
part of a total outsourcing solution or through a service bureau arrangement.
Furthermore, OSI expects additional competition from other established and
emerging companies as the client/server application software market continues to
expand. There can be no assurance that OSI will be able to compete successfully
against either its existing or future competitors.

           In general, OSI competes on the basis of product architecture and
functionality, service and support, including the range and quality of technical
support, training and implementation services, and product pricing in relation
to performance and support.

INTELLECTUAL PROPERTY AND OTHER PROPRIETARY RIGHTS

           OSI relies primarily on a combination of copyright and trademark
laws, trade secrets, confidentiality procedures and contractual provisions to
protect its proprietary rights. OSI seeks to protect its software, documentation
and other written materials under trade secret and copyright laws, which afford
only limited protection. OSI's license agreements contain provisions which limit
the number of users, state that title remains with OSI and protect
confidentiality. OSI presently has no patents or patent applications pending.

   
           Despite OSI's efforts to protect its proprietary rights, unauthorized
parties may attempt to copy aspects of OSI's products or to obtain and use
information that OSI regards as proprietary. Policing unauthorized use of OSI's
products is difficult, particularly overseas, and while OSI is unable to
determine the extent to which piracy of its software products exists, software
piracy can be expected to be a persistent problem. In addition, the laws of some
foreign countries do not protect OSI's proprietary rights to the extent of the
laws of the United States. Nevertheless, OSI believes that due to the rapid pace
of technological change in the information technology and software industries,
factors such as the technological and creative skills of its employees, new
product developments, frequent product enhancements and the timeliness and
quality of support services are more important to establishing and maintaining a
competitive advantage in the industry.
    

           OSI does not believe that any of its products infringe upon the
proprietary rights of third parties. There can be no assurance, however, that
third parties will not claim infringement by OSI with respect to current or
future products. Any such claim could result in costly litigation, cause product
shipment delays or require OSI to enter into royalty or licensing agreements.
Such royalty or licensing agreements, if required, may not be available on terms
acceptable to OSI or at all, which could have a material adverse effect upon
OSI's business, financial condition and results of operations.

EMPLOYEES

   
           As of September 30, 1998, OSI had a total of 143 employees, of which
32 were engaged in product development and system documentation, 69 were engaged
in implementation, training, support and maintenance, 25 were engaged in sales
and marketing and 17 were engaged in finance and administration and other
functions. None of OSI's employees is represented by a labor union. OSI has not
experienced any work stoppages and considers relations with its employees to be
good.
    

FACILITIES

   
           OSI currently leases approximately 25,000 square feet of space in its
headquarters facility in Glastonbury, Connecticut. A lease for 15,000 square
feet expires in 2003, a lease for 7,000 square feet expires in 2001 and a lease
for 3,000 square feet expires in July 1999. OSI plans to lease approximately
5,000 additional square feet at this facility during 1999.
    



                                      102
<PAGE>   112

                                MANAGEMENT OF HNC

EXECUTIVE OFFICERS AND DIRECTORS

   
           The names, ages and positions of HNC's executive officers and
directors as of December 7, 1998 are as follows:
    

   
<TABLE>
<CAPTION>
NAME                               AGE                                      POSITION
- ----                               ---                                      --------
<S>                                <C>     <C>                                                    
Robert L. North                    63      President, Chief Executive Officer and Director
Raymond V. Thomas                  55      Vice President, Finance and Administration, Chief Financial Officer and
                                           Secretary
John Mutch                         42      President, HNC Insurance Solutions Group
Michael A. Thiemann                42      President, HNC Financial Solutions Group
John Buchanan                      41      President, Retek Information Systems, Inc.
Todd V. Gutschow                   37      Vice President, Technology and New Markets
Edward K. Chandler (1)             40      Director
Oliver D. Curme (2)                44      Director
Thomas F. Farb (1)                 41      Director
Charles H. Gaylord, Jr. (2)        53      Director
Alex W. Hart                       __      Director
</TABLE>
    

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

(1)    Member of Audit Committee

(2)    Member of Compensation Committee

           Mr. North has been President and Chief Executive Officer and a
director of HNC since June 1987. Mr. North is also a director of Peerless
Systems Corporation. Mr. North holds Bachelor of Science and Master of Science
degrees in Electrical Engineering from Stanford University.

           Mr. Thomas has been Vice President, Finance and Administration and
Chief Financial Officer of HNC since February 1995 and Secretary of HNC since
May 1995. From May 1993 to February 1995, he served as Executive Vice President
and Chief Financial Officer of Golden Systems, Inc., a power supply
manufacturer, and from September 1994 to February 1995 he also served as Chief
Operating Officer. From April 1991 to May 1993, Mr. Thomas served as Senior Vice
President of Finance and Administration and Chief Financial Officer of Vitesse
Semiconductor Corporation, a semiconductor manufacturer. Mr. Thomas holds a
Bachelor of Science degree in Industrial Management from Purdue University and
attended the Wharton School of Business at the University of Pennsylvania.

   
           Mr. Mutch joined HNC in July 1997 as Vice President, Marketing, and
has served as President of HNC Insurance Solutions Group since September 1998.
He was a founder of MVenture Holdings, Inc., a private equity fund that invests
in start-up technology companies, and served as a General Partner from June 1994
to July 1997. From December 1986 to June 1994, Mr. Mutch held a variety of
positions with Microsoft Corporation, including Director of Organization
Marketing. He holds a Bachelor of Science degree in Applied Economics from
Cornell University and a Masters degree in Business Administration from the
University of Chicago.

           Mr. Thiemann joined HNC in June 1989. Mr. Thiemann has served as
President of the HNC Financial Solutions Group since April 1998. He ran HNC's
Aptex text analysis division from January 1996 to September 1996 and was
President and Chief Executive Officer of Aptex Software Inc. from September 1996
to April 1998. From May 1993 to January 1996, he served as Executive Vice
President, Sales and Marketing of HNC. He also served as Executive Vice
President and General Manager, Decision Systems of HNC from January 1993 to May
1993, Vice President and General Manager, Decision Systems of HNC from February
1990 to January 1993 and Vice President, New Business Development of HNC from
June 1989 to February 1990. Mr. Thiemann holds a Bachelor of Arts degree in Art,
a Bachelor of Science degree in Electrical Engineering and a Masters degree in
Electrical Engineering from Stanford University and a Masters degree in Business
Administration from Harvard University.
    

           Mr. Buchanan has been President of Retek since February 1993. In
November 1996, Retek became a wholly-owned subsidiary of HNC. Mr. Buchanan holds
a Bachelor of Commerce degree in Finance and Computer Systems from the
University of Otago.



                                      103
<PAGE>   113
   
           Mr. Gutschow is a co-founder of HNC and has been Vice President,
Technology and New Markets since January 1998. He served as Vice President,
Technology Development of HNC from October 1990 to January 1998. He was also
Secretary of HNC from January 1993 to May 1995. Mr. Gutschow holds a Bachelor of
Arts degree in Physics from Harvard University and attended the University of
California at San Diego.
    

           Mr. Chandler has been a director of HNC since August 1991. Since July
1991, he has been President of Prairie-EKC, Inc., a partner of the general
partner of PCE 1991 Limited Partnership, a venture capital firm. Since November
1996, Mr. Chandler has also been a Managing Director of Graystone Venture
Partners, LLC, a venture capital firm. Mr. Chandler holds a Bachelor of Arts
degree in Economics from Yale University and a Masters degree in Business
Administration from Harvard University.

           Mr. Curme has been a director of HNC since June 1987. Since January
1988, he has been a general partner of the general partner of Battery Ventures,
L.P., a national venture capital firm. Mr. Curme also serves as a director of
several privately held technology companies. Mr. Curme is also a director of
InfoSeek Corporation, an Internet search and navigation service company. He
holds a Bachelor of Science degree in Biochemistry from Brown University and a
Masters degree in Business Administration from Harvard University.

           Mr. Farb has been a director of HNC since November 1987. Since April
1994, he has been Senior Vice President, Chief Financial Officer and Treasurer
of Interneuron Pharmaceuticals, Inc., a publicly-held diversified pharmaceutical
company, and an officer of several of its subsidiaries. From October 1992 to
March 1994, Mr. Farb served as Vice President of Corporate Development, Chief
Financial Officer and Controller of Cytyc Corporation, a medical device and
diagnostics company. Mr. Farb also serves as a director of Redwood Trust, Inc.,
a California-based publicly-held Real Estate Investment Trust. He holds a
Bachelor of Arts degree in Sociology from Harvard College.

           Mr. Gaylord has been a director of HNC since May 1995. He is
currently a private technology investor and a director of Stac Inc., a
publicly-held software company. From December 1993 to September 1994, Mr.
Gaylord served as Executive Vice President of Intuit Inc., a publicly-held
personal and small business finance software company, following Intuit's
acquisition of ChipSoft, Inc., a tax preparation software company. Prior to that
acquisition, from June 1990 to December 1993, he served first as President and
Chief Executive Officer and a director of ChipSoft and then as Chairman of the
Board of Directors and Chief Executive Officer. He holds Bachelor of Science and
Master of Science degrees in Aerospace Engineering from Georgia Institute of
Technology and a Masters degree in Business Administration from Harvard
University.

   
           Mr. Hart has been a director of HNC since October 1998. He is
currently an independent consultant to the financial services industry and
serves as a director of Sanchez Computer Associates, Inc., a publicly-held
banking software company, and a number of privately-held companies. From March
1994 to October 1997, Mr. Hart was Chief Executive Officer of Advanta
Corporation, a diversified financial services company. From November 1988 to
February 1994, he was President and Chief Executive officer of MasterCard
International, a financial services company. Mr. Hart holds a ______ degree in
______ from Harvard University, a ______ degree from the Graduate School of Bank
Marketing at the University of Colorado and a ______ degree from Harvard
Business School.
    

COMMITTEES OF THE BOARD OF DIRECTORS

   
           Standing committees of the HNC Board include an Audit Committee and a
Compensation Committee. The HNC Board does not have a nominating committee or a
committee performing similar functions.
    

   
           Messrs. Chandler and Farb are the current members of the Audit
Committee. The Audit Committee met four times during 1997. The Audit Committee
meets with HNC's independent accountants to review the adequacy of HNC's
internal control systems and financial reporting procedures; reviews the general
scope of HNC's annual audit and the fees charged by the independent accountants;
reviews and monitors the performance of non-audit services by HNC's auditors,
reviews the fairness of any proposed transaction between HNC and any officer,
director or other affiliate of HNC (other than transactions subject to the
review of the Compensation Committee), and after such review, makes
recommendations to the full HNC Board; and performs such further functions as
may be required by any stock exchange or over-the-counter market upon which HNC
Common Stock may be listed.
    

           Messrs. Curme and Gaylord are the current members of the Compensation
Committee. The Compensation Committee met twice during 1997. The Compensation
Committee recommends compensation for officers and employees of HNC, grants (or
delegates authority to grant) options and stock awards under HNC's employee
benefit plans, and reviews and recommends adoption of and amendments to stock
option and employee benefit plans.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

   
           The Compensation Committee of the HNC Board consists of Messrs. Curme
and Gaylord, neither of whom has any interlocking relationships as defined by
the Commission.
    



                                      104
<PAGE>   114

DIRECTOR COMPENSATION

   
           HNC reimburses its Board members for reasonable expenses associated
with their attendance at HNC Board meetings. With the exception of Thomas F.
Farb, who receives a fee from HNC of $1,000 for each HNC Board meeting he
attends, none of the members of the HNC Board receives a fee for attending
meetings. Members of the HNC Board who are not employees, consultants or
independent contractors of HNC, or any parent, subsidiary or affiliate of HNC,
are eligible to participate in HNC's 1995 Directors Stock Option Plan (the
"Directors Plan"). During 1997, Messrs. Chandler, Curme, Farb and Gaylord were
each granted an option pursuant to the Directors Plan to purchase 10,000 shares
of HNC Common Stock at an exercise price of $39.875 per share.
    

EXECUTIVE COMPENSATION

           The following table sets forth all compensation awarded, earned or
paid for services rendered in all capacities to HNC and its subsidiaries during
each of 1995, 1996 and 1997 to (i) HNC's Chief Executive Officer and (ii) HNC's
four other most highly compensated executive officers who were serving as
executive officers at the end of 1997 (the "HNC Named Executive Officers"). This
information includes the dollar values of base salaries and bonus awards, the
number of shares subject to stock options granted and certain other
compensation, if any, whether paid or deferred. HNC does not grant stock
appreciation rights and has no long-term compensation benefits other than stock
options.

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                                                   LONG-TERM
                                                                                                                  COMPENSATION
                                                                 ANNUAL  COMPENSATION                               AWARDS
                                               -----------------------------------------------------------------  ------------
                                                                                                                   SECURITIES
                                                                                                   OTHER ANNUAL    UNDERLYING
NAME AND PRINCIPAL POSITION (1)                YEAR          SALARY             BONUS            COMPENSATION(2)    OPTIONS
- -------------------------------                ----          ------             -----            ---------------    -------
<S>                                            <C>           <C>                <C>              <C>               <C>   
Robert L. North                                1997          $196,008           $85,700               $4,763          70,000
President and Chief Executive Officer          1996           175,000            85,700                4,472          70,000
                                               1995           174,428            64,100                1,797         100,000

Raymond V. Thomas                              1997           129,584            42,400                  729          20,000
Vice President, Finance and                    1996           125,004            42,400                  438          20,000
Administration, Chief Financial Officer        1995           104,389            46,750               87,750(4)      110,000
and Secretary

Todd W. Gutschow                               1997           115,415            20,565                1,336          20,000
Vice President, Technology Development         1996           105,415            19,875                1,323          40,000
                                               1995           115,332            20,167                   62              --

Michael A. Thiemann                            1997           151,591           114,153(3)             1,919              --
President, Aptex Software Inc.                 1996           146,667           109,170(3)             1,799              --
                                               1995           111,351           202,823(3)               201              --

Lee E. Martin(5)                               1997            79,583           385,739(3)               264          10,000
Vice President, North American Sales           1996            75,000           251,966(3)               205          10,000
                                               1995            74,719           236,026(3)               200              --
</TABLE>


(1)        Principal position as of December 31, 1997.

(2)        Unless otherwise indicated below, represents premiums for group term
           life and disability insurance.

(3)        Includes commissions.

(4)        Represents premiums for group term life insurance and disability
           insurance in the amount of $360 and reimbursements for relocation
           expenses in the amount of $87,390.

   
(5)        Mr. Martin is no longer an executive officer of HNC.
    



                                      105
<PAGE>   115
   
           The following table sets forth further information regarding option
grants pursuant to the HNC 1995 Equity Incentive Plan during 1997 to each of the
HNC Named Executive Officers. In accordance with the rules of the Commission,
the table sets forth the hypothetical gains or "option spreads" that would exist
for the options at the end of their respective ten-year terms. These gains are
based on assumed rates of annual compound stock price appreciation of 5% and 10%
from the date the option was granted to the end of the option term.
    

                              OPTION GRANTS IN 1997

   
<TABLE>
<CAPTION>
                                                       INDIVIDUAL GRANTS
                              ------------------------------------------------------------------- 
                               NUMBER OF                                                                POTENTIAL REALIZABLE
                              SECURITIES     PERCENTAGE OF TOTAL                                       VALUE AT ASSUMED ANNUAL
                              UNDERLYING      OPTIONS GRANTED TO                                        RATES OF STOCK PRICE
                                OPTIONS          EMPLOYEES IN       EXERCISE PRICE     EXPIRATION   APPRECIATION FOR OPTION TERM(2)
                                                                                                    -------------------------------
           NAME               GRANTED(1)             1997             PER SHARE          DATE            5%                 10%
           ----               ----------     --------------------  ----------------    ----------   -----------          ----------
<S>                           <C>            <C>                   <C>                 <C>          <C>                  <C>       
Robert L. North...........      70,000               3.3%              $31.25           1/24/07     $1,375,707           $3,486,312
Raymond V. Thomas.........      20,000               1.0                31.25           1/24/07        393,059              996,089
Todd W. Gutschow..........      20,000               1.0                31.25           1/24/07        393,059              996,089
Michael A. Thiemann.......          --               --                   --              --                --                   --
Lee E. Martin.............      10,000               --                 31.25           1/24/07        196,529              498,045

</TABLE>
    

(1)        The options shown in the table were granted at fair market value, are
           incentive stock options (to the extent permitted under the Code) and
           will expire ten years from the date of grant, subject to earlier
           termination upon termination of the optionee's employment.

(2)        The 5% and 10% assumed annual compound rates of stock price
           appreciation are mandated by the rules of the Commission and do not
           represent HNC's estimate or projection of future HNC Common Stock
           prices or values.

   
           The following table sets forth certain information concerning the
exercise of options by each of the HNC Named Executive Officers during 1997,
including the aggregate amount of gains on the date of exercise. In addition,
the table includes the number of shares covered by both exercisable and
unexercisable stock options as of December 31, 1997. Also reported are values of
"in-the-money" options that represent the positive spread between the respective
exercise prices of outstanding stock options and $43.00 per share, which was the
closing price of HNC Common Stock as reported on the Nasdaq National Market on
December 31, 1997, the last day of trading for 1997.
    

             AGGREGATE OPTION EXERCISES IN 1997 AND YEAR-END VALUES

<TABLE>
<CAPTION>
                                                              NUMBER OF SECURITIES UNDERLYING     VALUE OF UNEXERCISED IN-THE-MONEY
                                                            UNEXERCISED OPTIONS AT YEAR END (1)        OPTIONS AT YEAR END (2)
                                                            -----------------------------------        -----------------------
                           SHARES ACQUIRED     VALUE
         NAME              ON EXERCISE (1)  REALIZED (1)      EXERCISABLE        UNEXERCISABLE    EXERCISABLE         UNEXERCISABLE
         ----              ---------------  ------------      -----------        -------------    -----------         -------------
<S>                        <C>              <C>               <C>                <C>              <C>                 <C>       
Robert L. North...........        97,834        $2,834,215        280,398              154,602    $11,465,135          $2,919,615
Raymond V. Thomas.........         3,000            72,750         70,916               72,084      2,836,640           1,870,860
Todd W. Gutschow..........            --                --         23,497               41,667        544,095             616,881
Michael A. Thiemann.......         4,167           103,445             --                   --             --                  --
Lee E. Martin.............         1,476            49,372          7,741               19,688        258,279             349,188
</TABLE>

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

(1)        "Value Realized" represents the fair market value of the shares of
           HNC Common Stock underlying the option on the date of exercise less
           the aggregate exercise price of the option.

(2)        These values, unlike the amounts set forth in the column entitled
           "Value Realized," have not been, and may never be, realized and are
           based on the positive spread between the respective exercise prices
           of outstanding options and the closing price of HNC Common Stock on
           December 31, 1997, the last day of trading for 1997.



                                      106
<PAGE>   116


                            SECURITY OWNERSHIP OF HNC

   
           The following table sets forth certain information with respect to
the beneficial ownership of HNC Common Stock as of August 31, 1998 and as
adjusted to reflect the issuance of HNC Common Stock in the Merger by: (i) each
stockholder known by HNC to be the beneficial owner of more than 5% of HNC
Common Stock; (ii) each director of HNC; (iii) each HNC Named Executive Officer;
and (iv) all current directors and executive officers of HNC as a group.
    

   
<TABLE>
<CAPTION>
                                                             SHARES BENEFICIALLY        SHARES BENEFICIALLY OWNED
                                                             OWNED BEFORE MERGER               AFTER MERGER
                                                           ------------------------     -------------------------
NAME OF BENEFICIAL OWNER                                   NUMBER(1)     PERCENT(1)     NUMBER(2)      PERCENT(2)
- ------------------------                                   ---------     ----------     ---------      ----------
<S>                                                        <C>             <C>          <S>            <C>
Capital Research and Management Co. (3).................   2,968,700         11.5%      2,968,700        10.5%
Robert L. North (4).....................................     391,253          1.5         391,253         1.4
Todd W. Gutschow (5)....................................     271,189          1.1         271,189         1.0
Edward K. Chandler (6)..................................     105,284          *           105,284           *
Raymond V. Thomas (7)...................................      90,833          *            90,883           *
Michael A. Thiemann (8).................................      40,167          *            40,167           *
Charles H. Gaylord, Jr. (9).............................      50,000          *            50,000           *
Lee E. Martin (10)......................................      20,673          *            20,673           *
Oliver D. Curme (11)....................................      12,500          *            12,500           *
Thomas F. Farb (12).....................................       7,550          *             7,550           *
Alex W. Hart............................................
All current executive officers and directors as a 
group (11 persons) (13).................................   1,026,276          4.0%      1,026,276         3.6%
</TABLE>
    
- ---------------

*Less than 1%

(1)        Based upon a total of 25,784,351 shares of HNC Common Stock
           outstanding as of August 31, 1998. Unless otherwise indicated below,
           the persons and entities named in the table have sole voting and sole
           investment power with respect to all shares beneficially owned,
           subject to community property laws where applicable. Shares of HNC
           Common Stock subject to options that are currently exercisable or
           exercisable within 60 days of August 31, 1998 are deemed to be
           outstanding and to be beneficially owned by the person holding such
           options for the purpose of computing the percentage ownership of such
           person but are not treated as outstanding for the purpose of
           computing the percentage ownership of any other person.

   
(2)        Assumes that an aggregate of 2,507,507 shares of HNC Common Stock are
           issued in the Merger to the OSI stockholders, based on the following:
           If, immediately before the Effective Time, there are outstanding
           2,236,013 shares of OSI Common Stock, 1,000,000 shares of OSI Series
           A-1 Preferred Stock, 583,333 shares of OSI Series A-2 Preferred
           Stock, 1,736,250 shares of OSI Series B Preferred Stock, 1,375,000
           shares of OSI Series C Preferred Stock, 1,250,000 shares of OSI
           Series D Preferred Stock and options to purchase an aggregate of
           1,887,500 shares of OSI Common Stock, then the Merger conversion
           formula provides that each then outstanding share of OSI Common
           Stock, OSI Series A-1 Preferred Stock, OSI Series A-2 Preferred
           Stock, OSI Series B Preferred Stock, OSI Series C Preferred Stock and
           OSI Series D Preferred Stock would be converted into the right to
           receive 0.23794, 0.27594, 0.31394, 0.31394, 0.35194 and 0.38993
           shares of HNC Common Stock, respectively.
    

   
(3)        Based upon a Schedule 13G dated July 10, 1998 filed by a group
           comprised of Capital Research and Management Co. ("CRMC") and
           SMALLCAP World Fund, Inc. ("SCWF"). CRMC reported that it is an
           investment advisor to various investment companies, including SCWF.
           CRMC reported sole dispositive power with respect to 2,968,700 shares
           of HNC Common Stock. SCWF reported shared voting power with respect
           to 1,595,000 shares of HNC Common Stock. The address of CRMC and SCWF
           is 333 South Hope Street, Los Angeles, California 90071.
    

   
(4)        Includes 77,137 shares of HNC Common Stock held of record by the
           Robert L. North & Dixie L. North Revocable Inter Vivos Trust, of
           which Mr. North is a trustee. Also includes 314,116 shares of HNC
           Common Stock subject to options exercisable within 60 days of August
           31, 1998. Mr. North is the President and Chief Executive Officer and
           a director of HNC.
    

   
(5)        Includes 239,523 shares of HNC Common Stock held by the Todd and Mari
           Gutschow Family Trust, of which Mr. Gutschow is a trustee, and 31,666
           shares of HNC Common Stock subject to options exercisable within 60
           days of August 31, 1998. Mr. Gutschow is Vice President, Technology
           and New Markets of HNC.
    

   
(6)        Includes 30,000 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998. Mr. Chandler is a
           director of HNC.
    

   
(7)        Represents 90,833 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998. Mr. Thomas is Vice
           President, Finance and Administration, Chief Financial Officer and
           Secretary of HNC.
    

   
(8)        Includes 40,167 shares of HNC Common Stock held by the Thiemann
           Family Trust dated July 1, 1996, of which Mr. Thiemann is a trustee.
           Mr. Thiemann is the President of the HNC Financial Solutions Group.
    

                                      107
<PAGE>   117

(Footnotes continued from previous page)

   
(9)        Represents 20,000 shares of HNC Common Stock held of record by the
           Gaylord Family Trust UTD 12/31/93, Charles H. Gaylord, Jr. and Lynn
           M. Gaylord trustees, and 30,000 shares of HNC Common Stock subject to
           options exercisable within 60 days of August 31, 1998. Mr. Gaylord is
           a director of HNC.
    

   
(10)       Includes 9,708 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998. Mr. Martin was an
           executive officer of HNC until February 1998.
    

   
(11)       Includes 12,500 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998. Mr. Curme is a
           director of HNC.
    

   
(12)       Represents 7,500 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998. Mr. Farb is a director
           of HNC.
    

   
(13)       Includes 574,115 shares of HNC Common Stock subject to options
           exercisable within 60 days of August 31, 1998, including the options
           described in footnotes (3) through (8), (10) and (11).
    



                                      108
<PAGE>   118


                           CERTAIN TRANSACTIONS OF HNC


   
           From January 1, 1995 to the present, there are no currently proposed
transactions in which the amount involved exceeds $60,000 to which HNC or any of
its subsidiaries was (or is to be) a party and in which any executive officer,
director, 5% beneficial owner of HNC Common Stock or member of the immediate
family of any of the foregoing persons had (or will have) a direct or indirect
material interest, except for: (i) payments set forth under "Executive
Compensation" above; (ii) the transactions described below; and (iii)
indemnification agreements entered into by HNC with each of its directors and
executive officers that provide the maximum indemnity available to directors and
executive officers under Section 145 of the DGCL and HNC's Bylaws, as well as
certain additional procedural protections. Such indemnity agreements provide
generally that HNC will advance expenses incurred by directors and executive
officers in any action or proceeding as to which they may be indemnified, and
require HNC to indemnify such individuals to the fullest extent permitted by
law.
    

   
           Aptex Software, Inc. ("Aptex") is a partially-owned subsidiary of HNC
formed to exploit HNC's text analysis technology in certain markets. From
January 1996 to September 1996, Michael A. Thiemann, formerly HNC's Executive
Vice President and currently President of HNC's Financial Solutions Group,
managed the Aptex business unit. From Aptex's incorporation in September 1996 to
July 1998, Mr. Thiemann was President, Chief Executive Officer and a director of
Aptex. During his employment as an executive officer of Aptex, Mr. Thiemann was
compensated under an employment agreement that provided for at least $150,000
annual base salary, plus the opportunity to earn a cash bonus of $50,000 each
year, based on certain mutually agreed on financial objectives. In addition,
apart from his compensation from Aptex, Mr. Thiemann received certain sales
commissions from HNC. Mr. Thiemann resigned all of his positions with Aptex as
of July 1, 1998.
    

   
           Mr. Thiemann purchased a total of 1,000,000 shares of Aptex Common
Stock in September 1996 for $30,000 in cash, pursuant to a Restricted Stock
Purchase Agreement (the "Stock Purchase Agreement") and Aptex's 1996 Equity
Incentive Plan. The Stock Purchase Agreement provided that, upon termination of
Mr. Thiemann's employment with Aptex, Aptex would be entitled to repurchase any
unvested shares, at Mr. Thiemann's purchase price. On January 1, 1997, 25% of
the shares vested free of Aptex's repurchase right and an additional 1/48 of the
shares vested monthly thereafter. At the time of his resignation, there were
375,000 unvested shares, all of which Aptex repurchased for an aggregate of
$11,250. HNC intends to purchase Mr. Thiemann's remaining 625,000 shares of
Aptex Common Stock at a price of $5.25 per share, for an aggregate of
$3,281,250.
    




                                      109
<PAGE>   119


                                MANAGEMENT OF OSI

EXECUTIVE OFFICERS, DIRECTORS AND KEY EMPLOYEES

           The executive officers, directors and certain other key employees of
OSI, their respective ages as of September 21, 1998 and their positions with OSI
are as follows:

   
<TABLE>
<CAPTION>
     EXECUTIVE OFFICERS AND DIRECTORS             AGE                              POSITION
     --------------------------------             ---                              --------

<S>                                               <C>      <C>                                                 
     Douglas K. Anderson...................       48       Chairman of the Board and Chief Executive Officer
     John L. Person........................       64       President and Chief Operating Officer
     Graham H. Gurney......................       58       Senior Vice President of Sales and Director
     Clifford I. Waggoner..................       57       Senior Vice President, Chief Technology Officer and
                                                           Director
     Richard J. Willemin...................       47       Senior Vice President and Chief Financial Officer
     Carlos P. Naudon......................       48       Vice Chairman of the Board
     Douglas C. Carlisle...................       41       Director
     David M. Clarke.......................       47       Director
     Samuel F. McKay.......................       59       Director
     William W. Neville....................       44       Director
     Richard P. Yanak......................       63       Director

     KEY EMPLOYEES

     Charles J. Beer.......................       40       Vice President of Application Development
     John J. DeMita........................       54       Vice President of Professional Services
     John L. Messier.......................       35       Vice President of Conversion Services
     Michael D. Nicastro...................       39       Vice President of Marketing
     Debra D. Rooney.......................       31       Controller
</TABLE>
    

           Mr. Anderson has served as Chairman of the Board and Chief Executive
Officer of OSI since December 1997 and as a director since July 1994. Mr.
Anderson served as President of OSI from October 1995 to December 1997. From
December 1986 to October 1995, Mr. Anderson was employed by the Savings Bank of
Manchester and was responsible for all bank operations and information
technology, most recently as Executive Vice President. Prior to joining the
Savings Bank of Manchester, Mr. Anderson was employed for 14 years by Unisys
Corporation.

           Mr. Person has served as President and Chief Operating Officer of OSI
since December 1997, and served as Executive Vice President and Chief Operating
Officer of OSI from May 1997 to December 1997. From August 1996 to May 1997, Mr.
Person was Managing Director of Compression Engines, LLC, a software company.
From October 1994 to May 1997, Mr. Person served as President of Enanti
Corporation, a contact management software company. From July 1992 to October
1994, Mr. Person served as President of HP Films, a film production company. Mr.
Person also served as President of Newtrend MISER Group, a company specializing
in banking software.

           Mr. Gurney co-founded OSI in 1992, and has served as Senior Vice
President of Sales of OSI since June 1996 and as a director since 1992. From
September 1984 to October 1987, Mr. Gurney served as regional district manager
for the New York district of Sperry Corporation, a computer hardware and
software company. From October 1987 to June 1992, Mr. Gurney served as the
Eastern regional sales director for Sharebase Corporation, a relational database
company. Mr. Gurney was employed in various positions for 15 years in the
financial services computing industry.

           Mr. Waggoner co-founded OSI in 1992, has served as Senior Vice
President and Chief Technology Officer of OSI since October 1995 and as a
director since 1992. Mr. Waggoner served as President of OSI from May 1992 to
October 1995. From June 1987 to May 1992, Mr. Waggoner was Vice President and
Principal of Linc Systems Corporation, a software services company. Prior to
joining Linc Systems Corporation, Mr. Waggoner was employed for 17 years by
Electronic Data Systems Corporation.



                                      110
<PAGE>   120

           Mr. Willemin has served as Senior Vice President and Chief Financial
Officer of OSI since April 1998. From March 1997 to April 1998, Mr. Willemin
served as Chief Financial Officer of Summit Medical, Inc., a supplier of
clinical database software. From September 1996 to February 1997, Mr. Willemin
served as Chief Financial Officer of Datalogix International, Inc., a supplier
of manufacturing and logistics software. From June 1994 to August 1996, Mr.
Willemin served as Vice President and Chief Financial Officer of NEIC, a
transaction processing company in the health care industry. From March 1992 to
June 1994, Mr. Willemin served as interim Chief Financial Officer during periods
of transition for several companies, including Saratoga Springs Water Company, a
beverage manufacturer and distributor, and Canyon Ranch Spa Cuisine, a mail
order health food company.

   
           Mr. Naudon has served as Vice Chairman of the Board of OSI since
October 1995 and as a director since September 1994, and served as Managing
Director from March 1995 to October 1995. Since May 1992, Mr. Naudon has served
as Chairman of the Board of BSI Administrative Services Inc., a benefits plan
administration company. In addition, since January 1984, Mr. Naudon has served
as President, Chief Executive Officer and director of Spectrum and Banking
Spectrum, Inc., each a banking consulting company.
    

           Mr. Carlisle has served as a director of OSI since March 1994. Since
1984, Mr. Carlisle has served as a general partner of Menlo Ventures VI, L.P.
("Menlo Ventures"), a venture capital fund that invests in emerging growth
technology companies. Mr. Carlisle is a director of Carrier Access Corporation.

           Mr. Clarke has served as a director of OSI since April 1998. Since
September 1993, Mr. Clarke has served as Vice President, Private Equity, of the
Aetna Investment Management Group of Aetna Life Insurance Company ("Aetna").
From September 1977 to September 1993, Mr. Clarke held various other positions
in the Private Bond Investment Group of Aetna.

           Mr. McKay has served as a director of OSI since December 1995. Since
April 1994, Mr. McKay has served as a general partner of Axiom Venture Partners,
L.P. ("Axiom"), a venture capital firm. Previously, Mr. McKay was general
partner of Connecticut Seed Ventures, L.P. Mr. McKay is a director of Anika
Therapeutics, Inc., Sabre Communications Corporation, Costar Corporation and
Nightingale Corp.

           Mr. Neville has served as a director of OSI since June 1998. Since
June 1997, Mr. Neville has served as President of BISYS. From June 1995 to June
1997, Mr. Neville served as Senior Vice President and Eastern regional General
Manager of BISYS. From June 1992 to June 1995, Mr. Neville served as Vice
President and General Manager of the New England region of BISYS.

           Mr. Yanak has served as a director of OSI since May 1996. Since
October 1996, Mr. Yanak has served as Senior Advisor of NYCE Corporation, an
electronic banking services company. From December 1987 to October 1996, Mr.
Yanak served as President and Chief Executive Officer of NYCE Corporation.

           Mr. Beer has served as Vice President of Application Development of
OSI since October 1996, and served as Director of Application Development of OSI
from June 1992 to October 1996. Previously, Mr. Beer served as Assistant Vice
President of Development of American Savings Bank.

           Mr. DeMita has served as Vice President of Professional Services of
OSI since September 1996. From December 1995 to September 1996, Mr. DeMita
served as Vice President of Production of NYCE Corporation, an electronic
banking services company. From July 1992 to October 1995, Mr. DeMita served as
President of Hardcopy Media Inc., a printing company and owned and operated
Alpha Graphics, a printing franchise company. Previously, Mr. DeMita served as
President of American Business Information Services, a subsidiary of American
Savings Bank.

           Mr. Messier has served as Vice President of Conversion Services of
OSI since December 1997, and served as Manager of Customer Support of OSI from
July 1995 to December 1997. From February 1990 to July 1995, Mr. Messier served
as a Product Support Specialist and Senior Project Manager at Fiserv, Inc., a
financial services technology company.

           Mr. Nicastro has served as Vice President of Marketing of OSI since
October 1996, and served as Director of Marketing and Customer Services of OSI
from September 1994 to October 1996. From February 1985 to September 1994, Mr.
Nicastro held various product management positions with the Data Services
Division of NCR Corporation. In addition, Mr. Nicastro served in various
positions at Bristol Savings Bank and Citicorp.



                                      111
<PAGE>   121



   
           Ms. Rooney has served as Controller of OSI since May 1997. From
August 1989 to April 1997, Ms. Rooney was employed by Price Waterhouse LLP, an
independent public accounting firm, most recently as Audit Manager in its
Technology Industry Group. Ms. Rooney is a certified public accountant.
    

   
           Pursuant to an Amended and Restated Investors' Rights Agreement dated
as of August 22, 1997 among OSI and certain stockholders of OSI, such
stockholders were granted the right (which terminates at the Effective Time) to
designate representatives on the OSI Board. Under this agreement, Messrs.
Carlisle, McKay, Clarke and Neville were elected the representatives of Menlo
Ventures, Axiom, Aetna and BISYS, respectively.
    

   
           Pursuant to a Software License and Marketing and Distribution
Agreement dated as of August 20, 1997 between OSI and BISYS, BISYS was granted
the right (which continues until termination of the agreement) to nominate a
candidate to the OSI Board.
    

           Each officer serves at the discretion of the OSI Board and holds
office until his or her successor is elected and qualified or until his or
her earlier resignation or removal. There are no family relationships among any
of the directors or executive officers of OSI.

COMMITTEES OF THE BOARD OF DIRECTORS

   
           The OSI Board has a Compensation Committee composed of Messrs.
Carlisle, McKay and Yanak, which makes recommendations concerning salaries and
incentive compensation for employees of and consultants to OSI and administers
and grants stock options pursuant to OSI's stock option plans, and an Audit
Committee composed of Messrs. Clark, McKay and Naudon, which reviews the results
and scope of the audit and other services provided by OSI's independent public
accountants. The OSI Board does not have a nominating committee or a committee
performing similar functions.
    

DIRECTOR COMPENSATION

   
           Directors do not currently receive any compensation for their
services on the OSI Board, other than reimbursement for out-of-pocket expenses.
    



                                      112
<PAGE>   122
   
EXECUTIVE COMPENSATION

           The following table sets forth the total compensation paid or accrued
for the year ended December 31, 1997 for OSI's Chief Executive Officer and its
three other most highly compensated executive officers in 1997 who were serving
as executive officers on December 31, 1997 (the Chief Executive Officer and such
other executive officers are hereinafter referred to as the "OSI Named Executive
Officers"):
    


                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                                 LONG-TERM
                                                         ANNUAL COMPENSATION                    COMPENSATION
                                            --------------------------------------------        ------------
                                                                               OTHER            SECURITIES
          NAME AND PRINCIPAL                                                   ANNUAL            UNDERLYING           ALL OTHER
              POSITION                         SALARY           BONUS       COMPENSATION         OPTIONS(1)         COMPENSATION
          ------------------------          -----------       ----------    ------------        ------------        ------------
<S>                                         <C>               <C>           <C>                 <C>                 <C>       
Douglas K. Anderson...............           $175,000          $30,000        $   --             195,000(2)          $40,000(2)
  Chairman of the Board
  and Chief Executive
  Officer

Graham H. Gurney..................            100,000           15,400(3)         --                  --                  --
  Senior Vice President of
  Sales

Clifford I. Waggoner..............            106,000            3,000            --                  --                  --
  Senior Vice President
  and Chief Technology
  Officer

John L. Person(4).................             88,218           15,000         2,800(5)          100,000               4,936(6)
  President and Chief
  Operating Officer
</TABLE>

- ----------

(1)        Represents the number of shares covered by options to purchase shares
           of OSI Common Stock granted during the year ended December 31, 1997.

(2)        In exchange for the surrender of the right to receive 175,000 shares
           of OSI Common Stock originally granted on October 2, 1995, Mr.
           Anderson received an option to purchase 175,000 shares of OSI Common
           Stock at an exercise price of $0.45 per share and supplemental
           compensation of $40,000 in 1997 and $60,000 in 1998.

(3)        Represents sales commissions.

(4)        Mr. Person joined OSI in May 1997.

(5)        Represents automobile allowance.

(6)        Represents reimbursement for relocation expenses.



                                      113
<PAGE>   123

   
     The following table sets forth grants of stock options to each of the OSI
Named Executive Officers during the year ended December 31, 1997.

                        OPTION GRANTS IN LAST FISCAL YEAR

<TABLE>
<CAPTION>
                                                   INDIVIDUAL GRANTS                        
                        --------------------------------------------------------------------          POTENTIAL REALIZABLE VALUE
                                       PERCENT OF                                                       AT ASSUMED ANNUAL RATES
                         NUMBER OF        TOTAL                                                             OF STOCK PRICE
                        SECURITIES       OPTIONS                                                        APPRECIATION FOR OPTION
                        UNDERLYING     GRANTED TO     EXERCISE      FAIR MARKET                                 TERM(3)
                          OPTIONS     EMPLOYEES IN      PRICE        VALUE PER    EXPIRATION    ------------------------------------
NAME                    GRANTED(1)     FISCAL YEAR    PER SHARE      SHARE(2)        DATE           0%           5%            10%
- ----                   ------------  -------------- ------------  -------------  ------------   ---------     ---------    ---------
<S>                    <C>           <C>            <C>           <C>            <C>            <C>           <C>           <C>     
Douglas K. Anderson...     175,000       36.3%         $0.45          $1.50           7/21/07   $183,750      $299,309      $476,600
                            20,000        4.2%          0.45           1.50           7/21/07     21,000        34,207        54,469
Graham H. Gurney......          --         --             --             --                --         --            --            --
Clifford I. Waggoner..          --         --             --             --                --         --            --            --
John L. Person........     100,000       20.7%          0.45           1.50           5/07/07    105,000       171,034       272,343

</TABLE>

- ----------

(1)        Mr. Anderson's option to purchase 175,000 shares vested with respect
           to 84,722 shares immediately upon grant and the remaining shares
           underlying the option vest in twenty-six equal monthly installments.
           Twenty-five percent of Mr. Person's option and Mr. Anderson's option
           to purchase 20,000 shares vest on the first anniversary of the date
           of grant and the remaining shares underlying the options vest in
           thirty-six equal monthly installments.

(2)        The fair market value of the OSI Common Stock on the grant date was
           determined in good faith by the OSI Board, based upon factors such as
           the terms upon which OSI issued securities to third parties in
           financing transactions, the illiquid nature of OSI's securities, and
           the financial condition, results of operations and business prospects
           of OSI at each of the dates of grant. OSI Common Stock is not
           publicly traded.
    

(3)        Amounts reported in these columns represent amounts that may be
           realized upon exercise of the options immediately prior to the
           expiration of their term assuming the specified compound rates of
           appreciation (0%, 5% and 10%) on the fair value of the OSI Common
           Stock on the date of option grant over the term of the options. These
           numbers are calculated based on rules promulgated by the Commission
           and do not reflect OSI's estimate of future stock price growth.
           Actual gains, if any, on stock option exercises and OSI Common Stock
           holdings are dependent on the timing of such exercise and the future
           performance of the OSI Common Stock.

           The following table sets forth certain information concerning the
number and value of unexercised options held by each of the OSI Named Executive
Officers on December 31, 1997. None of the OSI Named Executive Officers
exercised any stock options during the year ended December 31, 1997.

                          FISCAL YEAR-END OPTION VALUES

<TABLE>
<CAPTION>
                                       NUMBER OF SHARES                     VALUE OF UNEXERCISED
                                    UNDERLYING UNEXERCISED                  IN-THE-MONEY OPTIONS
                                  OPTIONS AT FISCAL YEAR-END                AT FISCAL YEAR-END(1)
                                 ------------------------------         ------------------------------
NAME                             EXERCISABLE      UNEXERCISABLE         EXERCISABLE      UNEXERCISABLE
- ----                             -----------      -------------         -----------      -------------
<S>                              <C>              <C>                     <C>               <C>       
Douglas K. Anderson.........        130,555            94,445             $536,248          $384,002
Graham H. Gurney............         81,272            30,208              342,314           126,874
Clifford I. Waggoner........         19,792            30,208               83,126           126,874
John L. Person..............             --           100,000                   --           405,000
</TABLE>

- ----------

(1)        Represents the difference between the exercise price and the fair
           value of the OSI Common Stock at fiscal year end.

EMPLOYMENT AGREEMENTS

     Pursuant to a Key Employee Agreement dated October 2, 1995, as amended on
July 21, 1997, OSI agreed to employ Douglas K. Anderson as President and Chief
Executive Officer. OSI also agreed to maintain a policy on the life of Mr.
Anderson with a death benefit of $300,000 payable to a beneficiary named by Mr.
Anderson. Under the agreement, Mr. Anderson retained 175,000 shares of OSI
Common Stock initially issued to him and surrendered the right to receive
175,000 shares in exchange for the grant of an incentive stock option to
purchase 175,000 shares of OSI Common Stock at an exercise price of $0.45 per
share and supplemental compensation of $40,000 in 1997 and $60,000 in 1998. OSI
also granted to Mr. Anderson an additional option to purchase 20,000 shares of
OSI Common Stock at an exercise price of $0.45 per share. On March 2, 1998, by
action of the OSI Board, OSI agreed to pay Mr. Anderson an annual base salary of
not less than $225,000 and a bonus of $50,000 in 1998 based on the achievement
of certain performance targets. OSI also agreed to provide, under certain
circumstances, for 24 months of salary continuation and acceleration of options
upon termination of Mr. Anderson's employment. See "Approval of the
Merger--Interests of Certain Persons in the Merger."

Pursuant to employment agreements dated January 2, 1993, as amended
on January 2, 1994, OSI agreed to employ each of Graham H. Gurney and Clifford
I. Waggoner. OSI agreed to pay each of Messrs. Gurney and Waggoner an annual
base salary of $100,000. The agreements also include a covenant by each of
Messrs. Gurney and Waggoner not to compete with the business of OSI, or to
solicit any employee or client of OSI, during the two-year period following his
employment termination, and contain customary confidentiality and invention
assignment provisions.

   
           Pursuant to a letter agreement dated April 10, 1997, OSI agreed to
employ John L. Person as Executive Vice President and Chief Operating Officer
and to grant Mr. Person an incentive stock option to purchase 100,000 shares of
OSI Common Stock at an exercise price of $0.45 per share. On March 2, 1998, by
action of the OSI Board, OSI agreed to pay Mr. Person an annual base
salary of $190,000 and a bonus of up to $35,000 based on the achievement of
certain performance targets. OSI also agreed to provide, under certain
circumstances, 12 months salary continuation and 
    



                                      114
<PAGE>   124

acceleration of options upon termination of Mr. Person's employment. See
"Approval of the Merger--Interests of Certain Persons in the Merger."

   
           Pursuant to a letter agreement dated February 27, 1998, OSI agreed to
employ Richard J. Willemin as Senior Vice President and Chief Financial Officer.
OSI agreed to pay Mr. Willemin an annual base salary of $150,000 and to grant
Mr. Willemin an incentive stock option to purchase 100,000 shares of OSI Common
Stock at an exercise price of $2.75 per share. OSI also agreed that in the event
of a change in control of OSI the vesting of all such options will be
accelerated. See "Approval of the Merger--Interests of Certain Persons in the
Merger."
    

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

   
           The current members of the Compensation Committee of the OSI Board
are Messrs. Carlisle, McKay and Yanak. No executive officer of OSI has served as
a director or member of the compensation committee (or other committee serving
an equivalent function) of any other entity, whose executive officers served as
a director of or member of the Compensation Committee of the OSI Board.

           From January 1997 to June 1998, Mr. Naudon served as a member of the
Compensation Committee of the OSI Board. Mr. Naudon is President, Chief
Executive Officer, a director and majority shareholder of Spectrum, a
shareholder of OSI. In January 1994, OSI entered into an agreement with Banking
Spectrum to license certain software products and for consulting and support
services. Pursuant to the agreement, OSI agreed to pay Banking Spectrum a
royalty based on the licensing of software products and related services,
ranging from three percent to 17% of net revenues, based on Banking Spectrum's
involvement in the sale of such products and services. In March 1998, OSI and
Banking Spectrum entered into a distribution agreement and a termination
agreement. The March 1998 distribution agreement provides that OSI shall have a
fully-paid license to distribute twenty copies of an electronic regulatory
reference product developed by Banking Spectrum. The March 1998 termination
agreement releases OSI from any future royalty payments to Banking Spectrum in
exchange for a cash payment of $100,000 and grants to affiliates of Banking
Spectrum fully-vested options to purchase 275,000 shares of OSI Common Stock at
an exercise price of $0.45 per share. The stock options were estimated by
management to have a fair value of approximately $1.6 million, and OSI recorded
a contract termination expense of approximately $1.3 million (net of amounts
previously accrued) for the three months ended March 31, 1998. On September 14, 
1994, OSI issued 83,333 shares of OSI Series A-2 Preferred Stock at $3.00 per 
share for $50,000 cash and a $200,000 promissory note from Banking Spectrum.

           Messrs. Carlisle and McKay were appointed to the OSI Board as the 
designee of Menlo Ventures and Axiom, respectively. Mr. Carlisle is a general 
partner of MV Management VI, L.P. ("MVM"). MVM is a general partner of Menlo 
Ventures and Menlo Entrepreneurs Fund VI, L.P. ("Menlo Entrepreneurs"). Mr. 
McKay is Chief Executive Officer of Axiom Venture Associates, Inc. ("Axiom 
Associates"), the general partner of Axiom.

           On February 3, 1994, OSI issued an aggregate of 1,000,000 shares of
OSI Series A-1 Preferred Stock at $1.50 per share for an aggregate purchase
price of $1.5 million to Menlo Ventures and Menlo Entrepreneurs. In addition,
OSI issued warrants to purchase 333,333 shares of OSI Series A-2 Preferred Stock
with an exercise price of $3.00 per share. These warrants were exercised on
September 13, 1994 for $999,999. On September 1, 1995, OSI issued demand notes
with an interest rate of 10% per annum to Menlo Ventures and Menlo Entrepreneurs
in an aggregate original principal amount of $500,000. On November 15, 1995, OSI
issued demand notes with an interest rate of 10% per annum to Menlo Ventures and
Menlo Entrepreneurs in an aggregate original principal amount of $500,000. Each
of the notes was repaid on December 27, 1995.

           On December 27, 1995, OSI issued an aggregate of 1,543,334 shares of
OSI Series B Preferred Stock at $3.00 per share for an aggregate purchase price
of $4,630,000 to certain investors, including Menlo Ventures, Menlo
Entrepreneurs, Axiom and CII. In addition, OSI issued warrants to purchase
192,916 shares of OSI Series B Preferred Stock at $4.00 per share. Warrants to
purchase 84,583 shares of OSI Series B Preferred Stock were exercised by Menlo
Ventures and Menlo Entrepreneurs on March 6, 1998 for $338,332. OSI granted each
of Axiom and Menlo the right (which terminates at the Effective Time) to
designate one nominee for election to the OSI Board.

           On October 23, 1996, OSI issued 1,222,222 shares of OSI Series C
Preferred Stock at $4.50 per share for an aggregate purchase price of $5,500,000
to Aetna, Menlo Ventures, Menlo Entrepreneurs, Axiom and CII. In addition, OSI
issued warrants to purchase 152,778 shares of OSI Series C Preferred Stock at
$6.00 per share. Warrants to purchase 41,667 shares of OSI Series C Preferred
Stock were exercised by Menlo Ventures and Menlo Entrepreneurs on March 6, 1998
for $250,002.

    

                                      115
<PAGE>   125


                            SECURITY OWNERSHIP OF OSI

   
           The following table sets forth certain information regarding the
beneficial ownership of the OSI Common Stock and OSI Preferred Stock as of
August 31, 1998, by (i) each person or entity known to OSI to own beneficially
more than 5% of the OSI Common Stock or any series of OSI Preferred Stock, (ii)
each of the directors of OSI, (iii) each of the OSI Named Executive Officers,
and (iv) all current directors and executive officers of OSI as a group.
    

   
        SHARES OF OSI COMMON STOCK AND OSI PREFERRED STOCK BENEFICIALLY OWNED(1)
    

   
<TABLE>
<CAPTION>
                                            COMMON STOCK          SERIES A-1 PREFERRED STOCK    SERIES A-2 PREFERRED STOCK 
                                            ------------          ---------------------------   --------------------------- 
                                                                                PERCENTAGE OF                 PERCENTAGE OF  
                                       NUMBER OF   PERCENTAGE OF   NUMBER OF     OUTSTANDING     NUMBER OF     OUTSTANDING   
                                        SHARES      OUTSTANDING      SHARES     OSI SERIES A-1     SHARES     OSI SERIES A-2   
                                     BENEFICIALLY    OSI COMMON   BENEFICIALLY    PREFERRED     BENEFICIALLY    PREFERRED    
       NAME OF BENEFICIAL OWNER        OWNED(1)        STOCK        OWNED(1)        STOCK         OWNED(1)        STOCK 
       ------------------------        --------        -----        --------        -----         --------        -----      
<S>                                  <C>            <C>           <C>           <C>             <C>            <C>     

  5% STOCKHOLDERS
  MV Management VI, L.P.(2).........   2,469,583        52.5%      1,000,000        100.00%        333,333         57.1%
  The BISYS Group, Inc.(3)..........   1,250,000        35.9%             --           --               --         --
  Axiom Venture Partners, L.P.(4)...     875,000        28.1%             --           --               --         --
  Aetna Life Insurance Company(5)...     750,000        25.1%             --           --               --         --
  Carlos P. Naudon(6)...............     550,042        22.0%             --           --           30,000          5.1%
  Connecticut Innovations,
   Incorporated(7)..................     479,167        17.7%             --           --          166,667         28.6%
  Graham H. Gurney(8)...............     441,688        19.0%             --           --               --         --
  Lorraine H. Rothstein.............     440,000        19.7%             --           --               --         --
    157 Arbour Circle
    Basking Ridge, NJ 07920
  Ellen A. Dugan....................     430,000        19.2%             --           --               --         --
    33 Country Oaks
    Lebanon, NJ 08833
  Clifford I. Waggoner(9)...........     380,208        16.8%             --           --               --         --
  Douglas K. Anderson(10)...........     348,055        14.5%             --           --               --         --
  Mark L. Villamar..................      39,066         1.7%             --           --           33,333          5.7%
    c/o Open Solutions Inc.
    300 Winding Brook Drive
    Glastonbury, CT  06033
  OTHER DIRECTORS AND EXECUTIVE
  OFFICERS
  Douglas C. Carlisle(2)............   2,469,583        52.5%      1,000,000        100.00%        333,333         57.1%
  David M. Clarke(5)................     750,000        25.1%             --           --               --         --
  Samuel F. McKay(4)................     875,000        28.1%             --           --               --         --
  William W. Neville................          --        --                --           --               --         --
  John L. Person(11)................      35,416         1.6%             --           --               --         --
  Richard J. Willemin...............          --        --                --           --               --         --
  Richard P. Yanak(12)..............      12,083         *                --           --               --         --
  All executive officers and
  directors as a group (11
  persons)(13)......................   5,862,075        84.6%      1,000,000        100.00%        363,333         62.3%
</TABLE>
    

   
<TABLE>
<CAPTION>
                                         SERIES B PREFERRED STOCK  SERIES C PREFERRED STOCK   SERIES D PREFERRED STOCK
                                         ------------------------  ------------------------   ------------------------
                                                    PERCENTAGE OF              PERCENTAGE OF              PERCENTAGE OF
                                        NUMBER OF    OUTSTANDING   NUMBER OF    OUTSTANDING   NUMBER OF    OUTSTANDING
                                          SHARES     OSI SERIES B    SHARES     OSI SERIES C    SHARES     OSI SERIES D
                                       BENEFICIALLY   PREFERRED   BENEFICIALLY   PREFERRED   BENEFICIALLY   PREFERRED
       NAME OF BENEFICIAL OWNER          OWNED(1)       STOCK       OWNED(1)       STOCK       OWNED(1)       STOCK
       ------------------------          --------       -----       --------       -----       --------       -----
<S>                                    <C>          <C>           <C>          <C>           <C>           <C>

  5% STOCKHOLDERS
  MV Management VI, L.P.(2).........       761,250       46.8%         375,000        29.7%           --         --
  The BISYS Group, Inc.(3)..........            --        --                --        --       1,250,000       100.00%
  Axiom Venture Partners, L.P.(4)...       750,000       43.8%         125,000         9.8%           --         --
  Aetna Life Insurance Company(5)...            --        --           750,000        55.7%           --         --
  Carlos P. Naudon(6)...............            --        --                --        --              --         --
  Connecticut Innovations,
   Incorporated(7)..................       187,500       11.4%         125,000         9.8%           --         --
  Graham H. Gurney(8)...............            --        --                --        --              --         --
  Lorraine H. Rothstein.............            --        --                --        --              --         --
    157 Arbour Circle
    Basking Ridge, NJ 07920
  Ellen A. Dugan....................            --        --                --        --              --         --
    33 Country Oaks
    Lebanon, NJ 08833
  Clifford I. Waggoner(9)...........            --        --                --        --              --         --
  Douglas K. Anderson(10)...........            --        --                --        --              --         --
  Mark L. Villamar..................            --        --                --        --              --         --
    c/o Open Solutions Inc.
    300 Winding Brook Drive
    Glastonbury, CT  06033
  OTHER DIRECTORS AND EXECUTIVE
  OFFICERS
  Douglas C. Carlisle(2)............       761,250       46.8%         375,000        29.7%           --         --
  David M. Clarke(5)................            --        --           750,000        55.7%           --         --
  Samuel F. McKay(4)................       750,000       43.8%         125,000         9.8%           --         --
  William W. Neville................            --        --                --        --              --         --
  John L. Person(11)................            --        --                --        --              --         --
  Richard J. Willemin...............            --        --                --        --              --         --
  Richard P. Yanak(12)..............            --        --                --        --              --         --
  All executive officers and
  directors as a group (11          
  persons)(13)......................     1,511,250       88.3%       1,250,000        91.8%           --         --
</TABLE>
    

- ----------

     * Less than 1%

     (Footnotes continued on next page)


                                      116
<PAGE>   126

- ----------

      (1)  Unless otherwise indicated below, the persons and entities named in
           the table have sole voting and sole investment power with respect to
           all shares beneficially owned, subject to community property laws
           where applicable. Shares of OSI Common Stock subject to options,
           warrants or convertible securities that are currently exercisable or
           exercisable within 60 days of August 31, 1998 are deemed to be
           outstanding and to be beneficially owned by the person holding such
           options, warrants or convertible securities for the purpose of
           computing the percentage ownership of such person but are not treated
           as outstanding for the purpose of computing the percentage ownership
           of any other person.

      (2)  Consists of (i) 985,221 shares of OSI Common Stock issuable upon
           conversion of OSI Series A--1 Preferred Stock held by Menlo Ventures
           and 14,779 shares of OSI Common Stock issuable upon conversion of OSI
           Series A--1 Preferred Stock held by Menlo Entrepreneurs, (ii) 328,407
           shares OSI Common Stock issuable upon conversion of OSI Series A-2
           Preferred Stock held by Menlo Ventures and 4,926 shares of OSI Common
           Stock issuable upon conversion of OSI Series A--2 Preferred Stock
           held by Menlo Entrepreneurs, (iii) 750,000 shares of OSI Common Stock
           issuable upon conversion of OSI Series B Preferred Stock held by
           Menlo Ventures and 11,250 shares of OSI Common Stock issuable upon
           conversion of OSI Series B Preferred Stock held by Menlo
           Entrepreneurs and (iv) 369,375 shares of OSI Common Stock issuable
           upon conversion of OSI Series C Preferred Stock held by Menlo
           Ventures and 5,625 shares of OSI Common Stock issuble upon conversion
           of OSI Series C Preferred Stock held by Menlo Entrepreneurs. MVM is a
           general partner of Menlo Ventures and Menlo Entrepreneurs. Mr.
           Carlisle, a director of OSI, is a general partner of MVM. Mr.
           Carlisle disclaims beneficial ownership of the shares held by Menlo
           Ventures and Menlo Entrepreneurs, except to the extent of his
           pecuniary interests therein. The address of MV Management VI, L.P. is
           3000 Sand Hill Road, Building 4, Suite 100, Menlo Park, CA 94025

      (3)  Consists of (i) 833,333 shares of OSI Common Stock issuable upon
           conversion of OSI Series D Preferred Stock, (ii) 416,667 shares of
           OSI Series D Preferred Stock issuable upon the exercise of warrants
           which are exercisable within 60 days after August 31, 1998 and (iii)
           416,667 shares of OSI Common Stock issuble upon conversion of such
           preferred stock. The address of The BISYS Group, Inc. is 11 Greenway
           Plaza, Houston, TX 77046.

   
      (4)  Consists of (i) 666,667 shares of OSI Common Stock issuable upon
           conversion of OSI Series B Preferred Stock, (ii) 111,111 shares of
           OSI Common Stock issuable upon conversion of OSI Series C Preferred
           Stock, (iii) 83,333 shares of OSI Series B Preferred Stock issuable
           upon the exercise of warrants which are exercisable within 60 days
           after August 31, 1998, (iv) 83,333 shares of OSI Common Stock issuble
           upon conversion of such OSI Series B Preferred Stock, (v) 13,889
           shares of OSI Series C Preferred Stock issuable upon the exercise of
           warrants which are exercisable within 60 days after August 31, 1998
           and (vi) 13,889 shares of OSI Common Stock issuable upon the
           conversion of such OSI Series C Preferred Stock. Mr. McKay, a
           director of OSI, is Chief Executive Officer of Axiom Associates, the
           general partner of Axiom. Mr. McKay shares voting and investment
           power with respect to such shares with two other executive officers
           of Axiom Associates. Mr. McKay disclaims beneficial ownership of the
           shares held by Axiom, except to the extent of his pecuniary interest
           therein. The address of Axiom Venture Partners, L.P. is City Place
           II, 17th Floor, Hartford, CT 06103.
    

   
      (5)  Consists of (i) 666,667 shares of OSI Common Stock issuable upon
           conversion of OSI Series C Preferred Stock, (ii) 83,333 shares of OSI
           Series C Preferred Stock issuable upon the exercise of warrants which
           are exercisable within 60 days after August 31, 1998 and (iii) 83,333
           shares of OSI Common Stock issuable upon the conversion of such OSI
           Series C Preferred Stock. Mr. Clarke, a director of OSI, is Vice
           President, Private Equity of Aetna. The address of Aetna Life
           Insurance Company is 151 Farmington Avenue, Hartford, CT 06106.
    

   
      (6)  Consists of (i) 251,762 shares of OSI Common Stock held by Spectrum,
           (ii) 23,520 shares of OSI Common Stock issuable upon the exercise of
           options held by Spectrum which are exercisable within 60 days after
           August 31, 1998, (iii) 14,375 shares of OSI Common Stock issuable
           upon conversion of OSI Series A--2 Preferred Stock, (iv) 205,695
           shares of OSI Common Stock issuable upon the exercise of options held
           by Mr. Naudon which are exercisable within 60 days after August 31,
           1998, (v) 10,000 shares of OSI Common Stock held by The Enrique S.
           Naudon Trust, (vi) 10,000 shares of OSI Common Stock held by The
           Ignacio S. Naudon Trust, (vii) 10,000 shares of OSI Common Stock held
           by The Huguette Rivet Trust, (viii) 9,065 shares of OSI Common Stock
           held by The Eric P. Steingass Trust and (ix) 15,625 shares of OSI
           Common Stock issuable upon conversion of OSI Series A--2 Preferred
           Stock held by Allister & Naudon Profit Sharing Pension Plan. Mr.
           Naudon, a director of OSI, is President and Chief Executive Officer,
           and a director and the majority shareholder of Spectrum, a trustee of
    


                                      117
<PAGE>   127

           the Allister & Naudon Profit Sharing Plan, and Susan Steingass, his
           spouse, is a trustee of The Enrique S. Naudon Trust, The Ignacio S.
           Naudon Trust, The Huguette Rivet Trust and The Eric P. Steingass
           Trust. The address of Carlos P. Naudon is c/o Banking Spectrum
           Service, Inc., 57 West 38th Street, New York, NY 10018.

      (7)  Consists of (i) 166,667 shares of OSI Common Stock issuable upon
           conversion of OSI Series A--2 Preferred Stock, (ii) 166,667 shares of
           OSI Common Stock issuable upon conversion of OSI Series B Preferred
           Stock, (iii) 111,111 shares of OSI Common Stock issuable upon
           conversion of OSI Series C Preferred Stock, (iv) 20,883 shares of OSI
           Series B Preferred Stock issuable upon the exercise of warrants which
           are exercisable within 60 days after August 31, 1998, (v) 20,833
           shares of OSI Common Stock issuable upon the conversion of such OSI
           Series B Preferred Stock, (vi) 13,889 shares of OSI Series C
           Preferred Stock issuable upon the exercise of warrants which are
           exercisable within 60 days after Adjust 31,1998 and (vii) 13,889
           shares of OSI Common Stock issuable upon the conversion of such OSI
           Series C Preferred Stock. CII is the State of Connecticut's
           technology development corporation. The address of Connecticut
           Innovations, Incorporated is 999 West Street, Rocky Hill, CT 06067.

      (8)  Includes 91,688 shares of OSI Common Stock subject to options held by
           Mr. Gurney which are exercisable within 60 days after August 31,
           1998. The address of Graham H. Gurney is c/o Open Solutions Inc., 300
           Winding Brook Drive, Glastonbury, CT 06033.

      (9)  Includes 30,208 shares of OSI Common Stock issuable upon the exercise
           of options held by Mr. Waggoner which are exercisable within 60 days
           after August 31, 1998. The address of Clifford I. Waggoner is c/o
           Open Solutions Inc., 300 Winding Brook Drive, Glastonbury, CT 06033.

      (10) Includes 173,055 shares of OSI Common Stock issuable upon the
           exercise of options held by Mr. Anderson which are exercisable within
           60 days after August 31, 1998. The address of Douglas K. Anderson is
           c/o Open Solutions Inc., 300 Winding Brook Drive, Glastonbury, CT
           06033.

      (11) Consists of OSI Common Stock issuable upon the exercise of options
           held by Mr. Person which are exercisable within 60 days after August
           31, 1998.

      (12) Consists of OSI Common Stock issuable upon the exercise of options
           held by Mr. Yanak which are exercisable within 60 days after August
           31, 1998.

   
      (13) Includes (i) 1,000,000 shares of OSI Common Stock issuable upon
           conversion of OSI Series A--1 Preferred Stock, (ii) 583,333 shares of
           OSI Common Stock issuable upon conversion of OSI Series A--2
           Preferred Stock, (iii) 1,627,917 shares of OSI Common Stock issuable
           upon conversion of OSI Series B Preferred Stock, (iv) 1,263,889
           shares of OSI Common Stock issuable upon conversion of OSI Series C
           Preferred Stock, (v) 833,333 shares of OSI Common Stock issuable upon
           conversion of OSI Series D Preferred Stock, (vi) 108,333 shares of
           OSI Series B Preferred Stock issuable upon the exercise of warrants
           which are exercisable within 60 days after August 31, 1998, (vii)
           108,333 shares of OSI Common Stock issuable upon the conversion of
           such OSI Series B Preferred Stock, (viii) 111,111 shares of OSI
           Series C Preferred Stock issuable upon the exercise of warrants which
           are exercisable within 60 days after August 31, 1998, (ix) 111,111
           shares of OSI Common Stock issuable upon the conversion of such OSI
           Series C Preferred Stock, (x) 416,667 shares of OSI Series D
           Preferred Stock issuable upon the exercise of warrants which are
           exercisable within 60 days after August 31, 1998, (xi) 416,667 shares
           of OSI Common Stock issuable upon the conversion of such OSI Series D
           Preferred Stock and (xii) 571,665 shares of OSI Common Stock issuable
           upon the exercise of options which are exercisable within 60 days
           after August 31, 1998.
    


                                      118
<PAGE>   128


                           CERTAIN TRANSACTIONS OF OSI

   
    

           In July 1992 and January 1994, OSI entered into Professional Services
Agreements (the "Prism Agreements") with Prince-Roth Information Systems
Management, Inc. T/A ("PRISM"). Under the PRISM Agreements, PRISM provided data
processing technical services to OSI, and OSI deferred payment for such services
under the agreements until June 1995 and June 1996, respectively. Pursuant to
the terms of the PRISM Agreements, Messrs. Gurney and Waggoner each received an
aggregate of approximately $132,000. Spouses of the shareholders of PRISM are
shareholders of OSI.

   
    

           On May 12, 1995, OSI issued 166,667 shares of OSI Series A-2
Preferred Stock at $3.00 per share for an aggregate purchase price of $500,000
to CII. CII is a holder of more than five percent of the OSI Preferred Stock.

   
           On December 27, 1995, OSI issued an aggregate of 1,543,334 shares of
OSI Series B Preferred Stock at $3.00 per share for an aggregate purchase price
of $4,630,000 to certain investors, including Menlo Ventures, Menlo
Entrepreneurs, Axiom and CII. In addition, OSI issued warrants to purchase
192,916 shares of OSI Series B Preferred Stock at $4.00 per share. Warrants to
Ventures and Menlo Entrepreneurs on March 6, 1998 for $338,332. OSI granted each
of Axiom and Menlo the right (which terminates at the Effective Time) to
designate one nominee for election to the OSI Board. Mr. McKay, a director of
OSI, is Chief Executive Officer of Axiom Associates, the general partner of
Axiom.

           On October 31, 1996, OSI issued 1,222,222 shares of OSI Series C
Preferred stock at $4.50 per share for an aggregate purchase price of $5,500,000
to Aetna, Menlo Ventures, Menlo Entrepreneurs, Axiom and CII. In addition, OSI
issued warrants to purchase 152,778 shares of OSI Series C Preferred Stock at
$6.00 per share. Warrants to purchase 41,667 shares of OSI Series C Preferred
Stock were exercised by Menlo Ventures and Menlo Entrepreneurs on March 6, 1998
for $250,002. OSI granted Aetna the right (which terminates at the Effective
Time) to designate one nominee for election to the OSI Board. Mr. Clarke, a
director of OSI, is Vice President, Private Equity, of Aetna.
    




                                      119
<PAGE>   129

   
           On August 22, 1997, OSI issued 833,333 shares of OSI Series D
Preferred Stock at $6.00 per share for an aggregate purchase price of $5,000,000
to the BISYS Group. In addition, OSI issued a warrant to purchase 416,667 shares
of OSI Series D Preferred Stock at $6.00 per share. Concurrent with such
preferred stock offering, OSI entered into a Software License and Marketing and
Distribution Agreement with BISYS. See "Business of OSI--Sales and Marketing."
BISYS is a subsidiary of BISYS Group. As of June 30, 1998, OSI had recognized an
aggregate of $115,658 of revenue under such agreement. Pursuant to such
agreement, BISYS shall pay OSI a license fee for each BISYS customer utilizing
the OSI System pursuant to an outsourcing arrangement equal to 30% of the
license fee OSI would receive if such customer was a direct customer of OSI (the
"OSI License Fee"), and an annual maintenance fee for each BISYS customer
utilizing the OSI System equal to 5% of the OSI License Fee during the first and
second year, 7% of the OSI License Fee during the third year and 10% of the OSI
License Fee for each year thereafter. OSI may also receive fees from BISYS for
rendering additional services under the Software License and Marketing and
Distribution Agreement. The agreement also provides that OSI may engage BISYS to
develop additional software applications for the OSI System at a cost equal to
the lesser of 25% of BISYS's development costs and $250,000. In addition,
pursuant to such agreement, BISYS was granted the right (which continues until
termination of the agreement) to nominate a candidate to the OSI Board. Mr.
Neville, a director of OSI, is President of BISYS.
    

   
           For additional information regarding transactions involving directors
of OSI, see "Management of OSI -- Compensation Committee Interlocks and Insider
Participation."
    

   
           OSI has adopted a policy providing that all material transactions
between OSI and its officers, directors and other affiliates must (i) be
approved by a majority of the members of the OSI Board and by a majority of the
disinterested members of the OSI Board and (ii) be on terms no less favorable to
OSI than could be obtained from unaffiliated third parties.
    



                                      120
<PAGE>   130


                        DESCRIPTION OF HNC CAPITAL STOCK

   
           The authorized capital stock of HNC consists of 50,000,000 shares of
HNC Common Stock and 4,000,000 shares of HNC Preferred Stock. As of August 31,
1998, there were outstanding 25,784,351 shares of HNC Common Stock held by 178
stockholders of record and options to purchase 6,074,418 shares of HNC Common
Stock.
    

HNC COMMON STOCK

   
           Subject to preferences that may apply to any HNC Preferred Stock
outstanding at the time, the holders of outstanding shares of HNC Common Stock
are entitled to receive dividends out of assets legally available therefore at
such times and in such amounts as the HNC Board may from time to time determine.
Each stockholder is entitled to one vote for each share of HNC Common Stock held
on all matters submitted to a vote of stockholders. Cumulative voting for the
election of directors is not provided for in HNC's Certificate of Incorporation,
which means that the holders of a majority of the shares voted can elect all of
the directors then standing for election. The HNC Common Stock is not entitled
to preemptive rights and is not subject to conversion or redemption. Upon
liquidation, dissolution or winding-up of HNC, the assets legally available for
distribution to stockholders are distributable ratably among the holders of the
HNC Common Stock and any participating HNC Preferred Stock outstanding at that
time after payment of liquidation preferences, if any, on any outstanding HNC
Preferred Stock and payment of other claims of creditors. Each outstanding share
of HNC Common Stock is fully paid and nonassessable. HNC Common Stock is traded
on the Nasdaq National Market under the symbol "HNCS."
    

PREFERRED STOCK

   
           The HNC Board is authorized, subject to any limitations prescribed by
Delaware law, to provide for the issuance of additional shares of HNC Preferred
Stock in one or more series, to establish from time to time the number of shares
to be included in each such series, to fix the powers, designations, preferences
and rights of the shares of each wholly unissued series and any qualifications,
limitations or restrictions thereon, and to increase or decrease the number of
shares of any such series (but not below the number of shares of such series
then outstanding), without any further vote or action by the stockholders. The
HNC Board may authorize the issuance of HNC Preferred Stock with voting or
conversion rights that could adversely affect the voting power or other rights
of the holders of HNC Common Stock. Thus, the issuance of HNC Preferred Stock
could have the effect of delaying, deferring or preventing a change in control
of HNC. HNC has no current plan to issue any shares of HNC Preferred Stock.
    

DELAWARE GENERAL CORPORATION LAW SECTION 203

   
           As a publicly held corporation organized under the laws of the State
of Delaware, HNC is subject to Section 203 of the DGCL, which restricts certain
business combinations between HNC and an "interested stockholder" (in general, a
stockholder owning 15% or more of HNC's outstanding voting stock) or its
affiliates or associates for a period of three years following the date on which
the stockholder becomes an "interested stockholder." The restrictions do not
apply if (i) prior to an interested stockholder becoming such, the HNC Board
approves either the business combination or the transaction in which the
stockholder becomes an interested stockholder, (ii) upon consummation of the
transaction in which the stockholder becomes an interested stockholder, such
interested stockholder owns at least 85% of the voting stock of HNC outstanding
at the time the transaction commences (excluding shares owned by certain
employee stock ownership plans and persons who are both directors and officers
of HNC) or (iii) on or subsequent to the date an interested stockholder becomes
such, the business combination is both approved by the HNC Board and authorized
at an annual or special meeting of HNC's stockholders, not by written consent,
but by the affirmative vote of at least 66-2/3% of the outstanding voting stock
not owned by the interested stockholder.
    

EXISTING SHELF REGISTRATIONS

           Pursuant to registration rights agreements entered into in connection
with the acquisitions of CompReview, Retek, PCS and FTI, HNC has registered the
shares of HNC Common Stock that were issued in these acquisitions on shelf
registration statements on Form S-3 pursuant to Rule 415 under the Securities
Act. An aggregate of 2,975,581 shares of HNC Common Stock are registered on
these shelf registration statements. Sales of these shares of HNC Common Stock
may be made pursuant to such shelf registration statements only during certain
time periods after advance notice to HNC. HNC is not obligated to maintain the
effectiveness of the such shelf registration statements after November 28, 1998
for the 



                                      121
<PAGE>   131

CompReview shelf registration, November 29, 1998 for the Retek shelf
registration, March 31, 1999 for the PCS shelf registration and April 6, 1999
for the FTI shelf registration. Pursuant to the registration rights agreements,
however, HNC has the right to defer a requested sale of shares, in which case
the time period during which the shelf registration statement must be kept
effective must be extended by a period of time equal to the period of deferral.

TRANSFER AGENT AND REGISTRAR

           The Transfer Agent and Registrar for HNC Common Stock is BankBoston,
N.A.


                                      122
<PAGE>   132


                        DESCRIPTION OF OSI CAPITAL STOCK


   
           The authorized capital stock of OSI consists of 19,055,417 shares of
OSI Common Stock and 5,944,583 shares of OSI Preferred Stock. As of September
16, 1998, there were outstanding (i) 2,236,013 shares of OSI Common Stock held
by 27 stockholders or record, (ii) 5,944,983 shares of OSI Preferred Stock held
by 13 stockholders of record, (iii) options to purchase an aggregate of
1,687,500 shares of OSI Common Stock and (iv) warrants to purchase 108,333
shares of OSI Series B Preferred Stock, 111,111 shares of OSI Series C Preferred
Stock and 416,667 shares of OSI Series D Preferred Stock.
    

COMMON STOCK

   
           Holders of OSI Common Stock are entitled to one vote for each share
held on all matters submitted to a vote of stockholders and do not have
cumulative voting rights. Accordingly, holders of a majority of the shares of
OSI Common Stock entitled to vote in any election of directors may elect all of
the directors standing for election. Holders of OSI Common Stock are entitled to
receive ratably such dividends, if any, as may be declared by the OSI Board out
of funds legally available therefor, subject to any preferential dividend rights
of outstanding OSI Preferred Stock. Upon the liquidation, dissolution or winding
up of OSI, the holders of OSI Common Stock are entitled to receive ratably the
net assets of OSI available after the payment of all debts and other liabilities
and subject to the prior rights of any outstanding OSI Preferred Stock. Holders
of OSI Common Stock have no preemptive, subscription, redemption or conversion
rights. The outstanding shares of OSI Common Stock are fully paid and
nonassessable.
    

PREFERRED STOCK

           As of September 30, 1998, of the 5,944,583 authorized shares of OSI
Preferred Stock, 1,000,000 shares have been designated Series A-1 Preferred
Stock, of which a total of 1,000,000 shares are outstanding, 583,333 shares have
been designated Series A-2 Preferred Stock, of which a total of 583,333 shares
are outstanding, 1,736,250 shares have been designated Series B Preferred Stock,
of which a total of 1,627,917 shares are issued and outstanding, 1,375,000
shares have been designated Series C Preferred Stock, of which a total of
1,263,889 shares are issued and outstanding, and 1,250,000 shares have been
designated Series D Preferred Stock, of which a total of 833,333 shares are
issued and outstanding.

   
           The holders of OSI Preferred Stock are entitled to non-cumulative
dividends, prior and in preference to any payment of any dividend on the OSI
Common Stock, payable when, as and if declared by the OSI Board in its sole
discretion. In the event of any liquidation, dissolution or winding up of OSI,
the holders of OSI Preferred Stock are entitled to receive, prior and in
preference to any distribution of any of the assets of OSI to the holders of OSI
Common Stock, an amount equal to their original purchase price plus an amount
equal to all declared but unpaid dividends thereon (such total being the
"Preference Amount"). If there are insufficient assets to permit the payment in
full of such Preference Amounts, then the assets of OSI are to be distributed
ratably to the holders of OSI Preferred Stock in the proportion to the
Preference Amount each holder is otherwise entitled to receive. After the full
Preference Amount has been paid on all outstanding shares of OSI Preferred
Stock, any remaining funds and assets of OSI legally available for distribution
to the stockholders are to be distributed ratably among the holders of OSI
Preferred Stock and OSI Common Stock held by each (assuming conversion of all
such OSI Preferred Stock). The holders of OSI Preferred Stock are entitled to
convert the OSI Preferred Stock at any time into shares of OSI Common Stock,
with automatic conversion occurring upon the closing of an underwritten public
offering meeting certain specified conditions, at specified conversion prices.
Such conversion prices are subject to adjustment in the event of stock splits,
stock dividends, or other issuances of OSI capital stock, with certain
enumerated exceptions.
    

   
           Each holder of OSI Preferred Stock is entitled to the number of votes
equal to the number of shares of OSI Common Stock issuable upon conversion of
such OSI Preferred Stock, generally voting together with the OSI Common Stock as
a single class. At each election of directors in which there are shares of OSI
Preferred Stock outstanding, the holders of OSI Preferred Stock, voting together
as a class, are entitled to elect four members to the OSI Board. Furthermore,
the holders of OSI Preferred Stock, together with the holders of OSI Common
Stock, voting together as a separate class, are entitled to elect one member to
the OSI Board, or such additional number of members approved by a majority of
the holders of OSI Preferred Stock and OSI Common Stock, each voting as a
separate class.
    

           The consent of a simple majority of the outstanding OSI Preferred
Stock, as well as certain simple majority votes of certain series of OSI
Preferred Stock, are required before OSI may: (i) sell, encumber or otherwise
dispose of all or substantially all of OSI's property or business, or merge into
or consolidate with any other corporation (other than a 



                                      123
<PAGE>   133



   
wholly-owned subsidiary corporation) or effect any transaction in which more
than 50% of the voting power of OSI is disposed of; (ii) alter or change the
rights, preferences or privileges of the OSI Preferred Stock; (iii) increase or
decrease (other than by redemption or conversion) the total number of authorized
shares of OSI Preferred Stock; (iv) create shares of any class or series of
stock having preferences superior to, or on a parity with, the OSI Preferred
Stock with respect to voting, dividends or liquidation; (v) effect a
reclassification or recapitalization of the outstanding capital stock of OSI;
(vi) amend the OSI Certificate of Incorporation, to provide limits on director
liability or indemnification other than to the maximum extent permitted by law;
or (vii) change the size of the OSI Board from nine. So long as any shares of
OSI Series B Preferred Stock or OSI Series C Preferred Stock are outstanding,
OSI cannot cause an automatic conversion of OSI Preferred Stock upon an
underwritten public offering without first obtaining the approval of the holders
of two-thirds of the outstanding shares of each of the OSI Series B Preferred
Stock and OSI Series C Preferred Stock.
    

WARRANTS

   
           As of September 30, 1998, OSI had outstanding warrants to purchase
108,333 shares of OSI Series B Preferred Stock at an exercise price of $4.00 per
share, warrants to purchase 111,111 shares of OSI Series C Preferred Stock at an
exercise price of $6.00 per share and a warrant to purchase 416,667 shares of
OSI Series D Preferred Stock at an exercise price of $6.00 per share. The
warrants to purchase OSI Series B Preferred Stock expire on December 27, 2000.
The warrants to purchase OSI Series C Preferred Stock expire on October 23,
2001. The warrant to purchase OSI Series D Preferred Stock expires on August 22,
2002. All of these warrants will have been exercised by the Effective Time.
    




                                      124
<PAGE>   134

          COMPARISON OF RIGHTS OF OSI STOCKHOLDERS AND HNC STOCKHOLDERS

           After consummation of the Merger, the holders of OSI Common Stock and
OSI Preferred Stock who receive HNC Common Stock under the terms of the Merger
Agreement will become stockholders of HNC. Because OSI and HNC are both Delaware
corporations, OSI stockholders' rights will continue to be governed by the DGCL.
Additionally, as stockholders of OSI, their rights are presently governed by the
OSI Certificate of Incorporation, as amended and restated ("OSI Charter"), and
the OSI Bylaws. As stockholders of HNC, their rights following the consummation
of the Merger will instead by governed by the HNC Certificate of Incorporation,
as amended ("HNC Charter") and the HNC Bylaws. Certain differences between the
rights of HNC stockholders and OSI stockholders under the charters and bylaws of
HNC and OSI, respectively, are summarized below. This summary does not purport
to be complete and is qualified in its entirety by reference to the HNC Charter
and Bylaws, the OSI Charter and Bylaws and the relevant provisions of the DGCL.

SIZE OF THE BOARD OF DIRECTORS

   
           The DGCL permits the board of directors alone to change the
authorized number, or the range, of directors by amendment to the bylaws, unless
the directors are not authorized to amend the bylaws or the number of directors
is fixed in the certificate of incorporation, in which case a change in the
number of directors may be made only by amendment to the certificate of
incorporation following approval of such change by the stockholders. The OSI
Bylaws specify a seven member board, or a board of such greater number as may be
approved by the OSI stockholders pursuant to the OSI Charter and the Amended and
Restated Investors Rights Agreement executed as part of the August 22, 1997 OSI
Series D Preferred Stock financing. The HNC Bylaws provide that the HNC Board
shall consist of one or more members, and further provides that the current
number of directors shall be six. Such number may be changed by resolution of
the HNC Board. The HNC Bylaws do not grant HNC stockholders the right to change
the authorized number, or the range, of directors. Former OSI stockholders would
therefore not retain their right to approve changes in the size of the board of
directors.
    

"BLANK CHECK" PREFERRED STOCK AND COMMON STOCK RIGHTS

   
           The HNC Charter permits the HNC Board to issue up to 4,000,000 shares
of HNC Preferred Stock and to determine the rights, preferences, privileges and
restrictions, including voting rights, of those authorized but unissued shares
of HNC Preferred Stock, commonly referred to as "blank check" Preferred Stock,
without any further vote or action by the HNC stockholders. The issuance of HNC
Preferred Stock could have the effect of making it more difficult for a third
party to acquire a majority of the outstanding HNC voting stock. Although the
HNC Board has no present intention of issuing such HNC Preferred Stock, it could
do so in the future without stockholder approval. The OSI Charter does not
permit the OSI Board to issue any "blank check" Preferred Stock.
    

PERCENTAGE OF VOTING STOCK; INFLUENCE OVER AFFAIRS

   
           Upon completion of the Merger, the percentage ownership of HNC by
each former OSI stockholder will be substantially less than such stockholder's
current percentage ownership of OSI. For example, based on the number of shares
of OSI Common Stock, OSI Preferred Stock and OSI Options outstanding as of
September 16, 1998, and assuming that, after September 16, 1998 and prior to
consummation of the Merger, all warrants to purchase OSI stock that were
outstanding on September 16, 1998 are exercised in full, and that OSI grants OSI
Options to purchase an additional 200,000 shares of OSI Common Stock, the
shareholders of OSI would own approximately ____% of the shares of HNC Common
Stock outstanding immediately following the Merger. Accordingly, former OSI
stockholders will have a significantly smaller voting influence over the affairs
of HNC than they currently enjoy over the affairs of OSI. See "Risk Factors --
Risks Relating to the Merger --Reduction of Ownership Interest of Current
Stockholders."
    

TRANSACTIONS WITH INTERESTED STOCKHOLDERS

           HNC, as a publicly held corporation, is subject to Section 203 of the
DGCL ("Section 203"). Section 203 prevents an "Interested Stockholder" of a
corporation (generally defined to mean any beneficial owner of more than 15% of
the corporation's voting stock) from engaging in any "Business Combination" (as
defined in Section 203) with the constituent corporation for a period of three
years following the date on which such Interested Stockholder became an
Interested Stockholder, unless: (i) before such person became an Interested
Stockholder, the Board of Directors of the corporation approved the transaction
which resulted in the Interested Stockholder becoming an Interested Stockholder;
(ii) upon consummation of the transaction which resulted in the Interested
Stockholder becoming an Interested Stockholder, the Interested Stockholder owned
at least 85% of the voting stock of the corporation outstanding at the time the
transaction commenced, excluding for purposes of determining the number of
shares outstanding, shares held by directors who are also officers, and employee
stock ownership plans in which employee participants do not have the right to
determine confidentially whether shares held subject to the plan will be
tendered in a tender or exchange offer; or 



                                      125
<PAGE>   135

   
(iii) following the transaction which resulted in the Interested Stockholder
becoming an Interested Stockholder, the Business Combination is (x) approved by
the Board of Directors of the corporation, and (y) authorized at an annual or
special meeting of stockholders, and not by written consent, by the affirmative
vote of the holders of at least 66-2/3% of the outstanding voting stock of the
corporation not then owned by the Interested Stockholder.
    

           OSI is not publicly held and accordingly is not subject to Section
203 of the DGCL.


                                 OTHER BUSINESS

           The OSI Board does not intend to bring any other business before the
Special Meeting, and, so far as is known to the OSI Board, no matters are to be
brought before the Special Meeting except as specified in the notice of the
Special Meeting. As to any business that may properly come before the Special
Meeting, however, it is intended that proxies, in the form enclosed, will be
voted in respect thereof in accordance with the judgment of the persons voting
such proxies.

                                  LEGAL MATTERS

           The validity of the shares of HNC Common Stock to be issued in the
Merger and certain other legal matters will be passed upon for HNC by Fenwick &
West LLP, Palo Alto, California. Certain legal matters in connection with the
Merger will be passed upon for OSI by Hale and Dorr LLP, Boston, Massachusetts,
and Shipman & Goodwin LLP, Hartford, Connecticut.



                                      126
<PAGE>   136


                                HNC SOFTWARE INC.

                          INDEX TO FINANCIAL STATEMENTS


   
<TABLE>
<CAPTION>
                                                                                                 PAGE
                                                                                                 ----
<S>                                                                                              <C>
HNC SOFTWARE INC.

        Report of Independent Accountants..................................................       F-2
        Consolidated Balance Sheet as of December 31, 1996 and 1997........................       F-3
        Consolidated Statement of Income and Comprehensive Income for the 
          years ended December 31, 1995, 1996 and 1997.....................................       F-4
        Consolidated Statement of Cash Flows for the years ended December 31, 1995, 
          1996 and 1997....................................................................       F-5
        Consolidated Statement of Changes in Stockholders' Equity for the years ended 
        December 31, 1995, 1996 and 1997...................................................       F-6
        Notes to Consolidated Financial Statements.........................................       F-7
        Consolidated Balance Sheet (unaudited) at September 30, 1998.......................      F-21
        Consolidated Statement of Operations and Comprehensive Income (Loss) (unaudited) 
          for the nine months ended September 30, 1997 and 1998............................      F-22
        Consolidated Statement of Cash Flows (unaudited) for the nine months ended 
          September 30, 1997 and 1998......................................................      F-23
        Consolidated Statement of Changes in Stockholders' Equity for the nine
          months ended September 30, 1998..................................................      F-24
        Notes to Consolidated Financial Statements (unaudited).............................      F-25


OPEN SOLUTIONS INC.

        Report of Independent Accountants..................................................      F-30
        Balance Sheet at December 31, 1996, 1997 and September 30, 1998 (unaudited)........      F-31
        Statement of Operations for the years ended December 31, 1995, 1996 and 
          1997 and for the nine months ended September 30, 1997 (unaudited) and
          September 30, 1998 (unaudited)...................................................      F-32
        Statement of Cash Flows for the years ended December 31, 1995, 1996 and 
          1997 and for the nine months ended September 30, 1997 (unaudited) and
          September 30, 1998 (unaudited)...................................................      F-33
        Statement of Changes in Stockholders' Equity (Deficit) for the years
             ended December 31, 1995, 1996 and 1997 and for the nine months ended
             September 30, 1998 (unaudited)................................................      F-34
        Notes to Financial Statements......................................................      F-35

</TABLE>
    



                                      F-1
<PAGE>   137


                        REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders
of HNC Software Inc.

In our opinion, the accompanying consolidated balance sheet and the related
consolidated statements of income and comprehensive income, of cash flows and of
changes in stockholders' equity present fairly, in all material respects, the
financial position of HNC Software Inc. and its subsidiaries at December 31,
1996 and 1997, and the results of their operations and their cash flows for each
of the three years in the period ended December 31, 1997, in conformity with
generally accepted accounting principles. These financial statements are the
responsibility of the Company's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these statements in accordance with generally accepted auditing
standards which require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for the opinion expressed above.




Price Waterhouse LLP

San Diego, California
January 29, 1998,
except as to Note 11
which is as of February 13, 1998



                                      F-2
<PAGE>   138

                                HNC SOFTWARE INC.

                           CONSOLIDATED BALANCE SHEET
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)

                                     ASSETS

<TABLE>
<CAPTION>
                                                                                    DECEMBER 31,
                                                                             -------------------------
                                                                                 1996          1997
                                                                             ----------     ----------
<S>                                                                            <C>          <C>       
Current assets:
  Cash and cash equivalents................................................    $  8,121     $   18,068
  Investments available for sale...........................................      26,728         24,878
  Accounts receivable, net.................................................      21,856         32,980
  Current portion of deferred income taxes.................................       6,383         11,310
  Other current assets.....................................................       2,553          2,802
                                                                               --------     ----------
          Total current assets.............................................      65,641         90,038
Deferred income taxes, less current portion................................      22,966         15,322
Property and equipment, net................................................       6,339         12,102
Other assets...............................................................       3,330          2,415
                                                                               --------     ----------
                                                                               $ 98,276     $  119,877
                                                                               ========     ==========

                                 LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
  Accounts payable.........................................................    $  4,368     $    5,728
  Accrued liabilities......................................................       4,433          5,933
  Deferred revenue.........................................................       3,377          3,883
  Other current liabilities................................................         445            191
                                                                               --------     ----------
          Total current liabilities........................................      12,623         15,735
Non-current liabilities....................................................         683            239

Minority interest in consolidated subsidiary...............................          --             43

Commitments and contingencies (Notes 5 and 10)

Stockholders' equity:
  Preferred stock, $0.001 par value -- 4,000 shares authorized:
     no shares issued or outstanding.......................................          --             --
  Common stock, $0.001 par value-- 50,000 shares authorized:
     24,012 and 24,538 shares issued and outstanding, respectively.........          24             25
  Paid-in capital..........................................................      83,991         95,919
  Accumulated other comprehensive income...................................          (5)          (113)
  Retained earnings........................................................         960          8,029
                                                                               --------     ----------
          Total stockholders' equity.......................................      84,970        103,860
                                                                               --------     ----------
                                                                               $ 98,276     $  119,877
                                                                               ========     ==========
</TABLE>

           See accompanying notes to consolidated financial statements


                                      F-3
<PAGE>   139



                                HNC SOFTWARE INC.

            CONSOLIDATED STATEMENT OF INCOME AND COMPREHENSIVE INCOME
                      (IN THOUSANDS, EXCEPT PER SHARE DATA)

<TABLE>
<CAPTION>
                                                                              YEAR ENDED DECEMBER 31,
                                                                    ------------------------------------------
                                                                         1995           1996           1997
                                                                    -------------  -------------   -----------
<S>                                                                 <C>            <C>             <C>       
Revenues:
  License and maintenance........................................     $  24,561      $  48,890      $   89,643
  Installation and implementation................................         4,648          6,691          10,702
  Contracts and other............................................         9,146         11,128           7,772
  Service bureau.................................................         5,349          4,730           5,618
                                                                      ---------      ---------      ----------
          Total revenues.........................................        43,704         71,439         113,735
                                                                      ---------      ---------      ----------
Operating expenses:
  License and maintenance........................................         7,903         13,725          19,937
  Installation and implementation................................         1,425          2,714           5,174
  Contracts and other............................................         6,894          7,694           5,438
  Service bureau.................................................         3,025          3,365           4,320
  Research and development.......................................         6,998         13,808          21,151
  Sales and marketing............................................         7,276         11,923          22,049
  General and administrative.....................................         5,101          8,551          12,626
                                                                      ---------      ---------      ----------
          Total operating expenses...............................        38,622         61,780          90,695
                                                                      ---------      ---------      ----------
Operating income.................................................         5,082          9,659          23,040
Interest and other income........................................           912          2,178           2,003
Interest expense.................................................          (428)          (478)            (81)
Minority interest in income of consolidated subsidiary...........            --             --             (43)
                                                                      ---------      ---------      ----------
          Income before income tax (benefit) provision...........         5,566         11,359          24,919
Income tax (benefit) provision...................................          (511)          (534)          7,354
                                                                      ---------      ---------      ----------
          Net income.............................................     $   6,077      $  11,893      $   17,565
                                                                      =========      =========      ==========
Other comprehensive income:
  Foreign currency translation adjustments.......................            --             54            (165)
  Unrealized gain (loss) on securities available for sale........            92           (151)             57
                                                                      ---------      ---------      ----------
  Total other comprehensive income...............................            92            (97)           (108)
                                                                      ---------      ---------      ----------
Comprehensive income.............................................         6,169         11,796          17,457
                                                                          -----         ------          ------
Earnings per share:
  Basic net income per common share..............................     $    0.38         $ 0.50         $  0.72
                                                                      =========      =========      ==========
  Diluted net income per common share............................     $    0.28         $ 0.47         $  0.68
                                                                      =========      =========      ==========
Unaudited pro forma data (Note 1):
  Income before income tax provision.............................     $   5,566      $  11,359      $   24,919
  Income tax provision...........................................         1,032          1,628           9,502
                                                                      ---------      ---------      ----------
          Net income.............................................     $   4,534      $   9,731      $   15,417
                                                                      =========      =========      ==========
  Basic pro forma net income per common share....................                                   $     0.64
                                                                                                    ==========
  Diluted pro forma net income per common share..................                                   $     0.60
                                                                                                    ==========
Shares used in computing basic net income per common share
  and unaudited basic pro forma net income per common
  share (Notes 1 and 8)..........................................        15,195         23,552          24,275
                                                                      =========      =========      ==========
Shares used in computing diluted net income per common share
  and unaudited diluted pro forma net income per common share
  (Notes 1 and 8)................................................        21,510         25,363          25,681
                                                                      =========      =========      ==========
</TABLE>

          See accompanying notes to consolidated financial statements.



                                      F-4
<PAGE>   140


                                HNC SOFTWARE INC.

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                     YEAR ENDED DECEMBER 31,
                                                                            ---------------------------------------
                                                                                1995          1996          1997
                                                                            ------------  ------------  -----------
<S>                                                                         <C>           <C>           <C>       
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income..............................................................   $    6,077    $   11,893    $   17,565
  Adjustments to reconcile net income to net cash provided by operating
    activities:
    Depreciation and amortization.........................................        1,874         3,605         4,833
    Tax benefit from stock option transactions............................          800           896         3,848
    Changes in assets and liabilities:
      Accounts receivable, net............................................       (1,658)      (10,978)      (11,124)
      Other assets........................................................         (674)       (1,207)         (295)
      Deferred income taxes...............................................       (1,551)       (1,324)        6,909
      Accounts payable....................................................        1,172         2,167         1,360
      Accrued liabilities.................................................        1,756           625        (2,348)
      Deferred revenue....................................................        1,337         1,472           375
      Other liabilities...................................................           22          (441)         (116)
                                                                             ----------    ----------    ----------
         Net cash provided by operating activities........................        9,155         6,708        21,007
                                                                             ----------    ----------    ----------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchase of investments available for sale..............................      (28,666)      (26,113)      (26,517)
  Maturities of investments available for sale............................        4,182        18,125        24,666
  Proceeds from sales of investments available for sale...................        2,467         3,707         3,716
  Acquisitions of property and equipment..................................       (2,246)       (3,978)       (9,593)
                                                                             ----------    ----------    ----------
         Net cash used in investing activities............................      (24,263)       (8,259)       (7,728)
                                                                             ----------    ----------    ----------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Net proceeds from issuances of common stock.............................       33,726         1,935         4,039
  Proceeds from issuances of notes payable to stockholders................        1,000            --            --
  Repayments of notes payable to stockholders.............................           --        (1,000)           --
  Proceeds from bank line of credit.......................................        1,085           309            --
  Repayments of bank line of credit.......................................         (265)       (2,504)           --
  Repayments of debt from asset purchases.................................           --        (4,710)           --
  Capital lease payments..................................................         (502)         (553)         (408)
  Proceeds from issuances of bank notes payable...........................           --         1,999            --
  Repayments of bank notes payable........................................         (687)       (1,999)           --
  Distributions to CompReview stockholders................................       (3,845)       (5,908)       (6,798)
                                                                             ----------    ----------    ----------
         Net cash provided by (used in) financing activities..............       30,512       (12,431)       (3,167)
                                                                             ----------    ----------    ----------
Effect of exchange rate changes on cash...................................           --            54          (165)
                                                                             ----------    ----------    ----------
Net increase (decrease) in cash and cash equivalents......................       15,404       (13,928)        9,947
Cash and cash equivalents at beginning of period..........................        6,645        22,049         8,121
                                                                             ----------    ----------    ----------
Cash and cash equivalents at end of period................................   $   22,049    $    8,121    $   18,068
                                                                             ==========    ==========    ==========
SIGNIFICANT NON-CASH INVESTING AND FINANCING ACTIVITIES:
  Assets purchased through issuance of debt...............................   $       --    $    4,710    $       --
                                                                             ==========    ==========    ==========
  Acquisitions of property and equipment under capital leases.............   $      411    $      344    $       --
                                                                             ==========    ==========    ==========
  Conversion of preferred stock...........................................   $   13,518    $       --    $       --
                                                                             ==========    ==========    ==========
  Accretion of dividends on mandatorily redeemable convertible preferred
    stock.................................................................   $      348    $       --    $       --
                                                                             ==========    ==========    ==========
SUPPLEMENTAL CASH FLOW DISCLOSURE:
  Interest paid...........................................................   $      390    $      448    $      101
                                                                             ==========    ==========    ==========
  Income taxes paid.......................................................   $      190    $      165    $      547
                                                                             ==========    ==========    ==========
</TABLE>

           See accompanying notes to consolidated financial statements




                                      F-5
<PAGE>   141

                                HNC SOFTWARE INC.

            CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
                                 (IN THOUSANDS)


<TABLE>
<CAPTION>
                                                                                                                                   
                                                                  CONVERTIBLE PREFERRED STOCK                                      
                                                    -----------------------------------------------------                          
                                                             SERIES A                    SERIES E                 COMMON STOCK     
                                                    -------------------------   -------------------------  ------------------------
                                                       SHARES        AMOUNT        SHARES       AMOUNT        SHARES        AMOUNT 
                                                    ------------  ------------  ------------ ------------  ------------  ----------
<S>                                                 <C>           <C>           <C>          <C>           <C>           <C>       
BALANCE AT DECEMBER 31, 1994.....................        380          $ --          1,282        $  1          8,656         $  9  
Common stock options exercised...................                                                                207               
Accretion of dividends...........................                                                                                  
Issuance of common stock in initial public
 offering, net of issuance costs.................                                                              2,376            2  
Conversion of convertible preferred stock into
 common stock....................................       (380)           --         (1,282)         (1)         8,956            9  
Issuance of common stock in follow-on public
 offering, net of issuance costs.................                                                              1,116            2  
Issuance of common stock at inception of Retek
 (Note 1)........................................                                                              1,367            1  
Tax benefit from stock option transactions.......                                                                                  
Other comprehensive income.......................                                                                                  
Stock warrant exercised..........................                                                                100               
Distributions to CompReview stockholders.........                                                                                  
Net income.......................................                                                                                  
                                                        ----          ----         ------        ----         ------         ----  
BALANCE AT DECEMBER 31, 1995.....................         --            --             --          --         22,778           23  
Common stock options exercised...................                                                              1,140            1  
Common stock issued under Employee Stock
 Purchase Plan...................................                                                                 94               
Tax benefit from stock option transactions.......                                                                                  
Tax benefit from Retek taxable pooling (Note
 7)..............................................                                                                                  
Other comprehensive income.......................                                                                                  
Distributions to CompReview stockholders.........                                                                                  
Net income.......................................                                                                                  
                                                        ----          ----         ------        ----         ------         ----  
BALANCE AT DECEMBER 31, 1996.....................         --            --             --          --         24,012           24  
Common stock options exercised...................                                                                475            1  
Common stock issued under Employee Stock
 Purchase Plan...................................                                                                 51               
Tax benefit from stock option transactions.......                                                                                  
Other comprehensive income.......................                                                                                  
Distributions to CompReview stockholders.........                                                                                  
CompReview contribution to capital...............                                                                                  
Net income.......................................                                                                                  
                                                        ----          ----         ------        ----         ------         ----  
BALANCE AT DECEMBER 31, 1997.....................         --          $ --             --        $ --         24,538         $ 25  
                                                        ====          ====         ======        ====         ======         ====  
</TABLE>

<TABLE>
<CAPTION>
                                                                     ACCUMULATED    (ACCUMULATED
                                                                        OTHER           DEFICIT)         TOTAL
                                                                                                              
                                                         PAID-IN     COMPREHENSIVE     RETAINED      STOCKHOLDERS'
                                                                                                                  
                                                         CAPITAL        INCOME          EARNINGS         EQUITY
                                                      ------------      ------      ---------------  ----------
<S>                                                   <C>            <C>            <C>              <C>       
BALANCE AT DECEMBER 31, 1994.....................       $ 10,980       $    --         $ (10,149)     $      841
Common stock options exercised...................             85                                              85
Accretion of dividends...........................           (348)                                           (348)
Issuance of common stock in initial public
 offering, net of issuance costs.................         14,329                                          14,331
Conversion of convertible preferred stock into
 common stock....................................         10,618                           2,892          13,518
Issuance of common stock in follow-on public
 offering, net of issuance costs.................         19,184                                          19,186
Issuance of common stock at inception of Retek
 (Note 1)........................................             (1)                                             --
Tax benefit from stock option transactions.......            800                                             800
Other comprehensive income.......................                           92                                92
Stock warrant exercised..........................            124                                             124
Distributions to CompReview stockholders.........                                         (3,845)         (3,845)
Net income.......................................                                          6,077           6,077
                                                        --------       -------         ---------      ----------
BALANCE AT DECEMBER 31, 1995.....................         55,771            92            (5,025)         50,861
Common stock options exercised...................          1,095                                           1,096
Common stock issued under Employee Stock
 Purchase Plan...................................            839                                             839
Tax benefit from stock option transactions.......          7,889                                           7,889
Tax benefit from Retek taxable pooling (Note
 7)..............................................         18,397                                          18,397
Other comprehensive income.......................                          (97)                              (97)
Distributions to CompReview stockholders.........                                         (5,908)         (5,908)
Net income.......................................                                         11,893          11,893
                                                        --------       -------         ---------      ----------
BALANCE AT DECEMBER 31, 1996.....................         83,991            (5)              960          84,970
Common stock options exercised...................          2,845                                           2,846
Common stock issued under Employee Stock
 Purchase Plan...................................          1,193                                           1,193
Tax benefit from stock option transactions.......          4,192                                           4,192
Other comprehensive income.......................                         (108)                             (108)
Distributions to CompReview stockholders.........                                         (6,798)         (6,798)
CompReview contribution to capital...............          3,698                          (3,698)             --
Net income.......................................                                         17,565          17,565
                                                        --------       -------         ---------      ----------
BALANCE AT DECEMBER 31, 1997.....................       $ 95,919       $  (113)        $   8,029      $  103,860
                                                        ========       =======         =========      ==========
</TABLE>

           See accompanying notes to consolidated financial statements


                                      F-6
<PAGE>   142

                                HNC SOFTWARE INC

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

NOTE 1 -- HNC AND ITS SIGNIFICANT ACCOUNTING POLICIES


     Headquartered in San Diego, California, HNC Software Inc. ("HNC") develops,
markets and supports predictive software solutions in client/server
environments. HNC provides innovative predictive software systems in the
healthcare/insurance, financial services and retail markets.

Acquisitions

     On August 30, 1996, HNC completed an acquisition of all of the outstanding
shares of Risk Data Corporation ("Risk Data"). Risk Data is an insurance
information technology services firm that develops, markets and supports
analytical benchmarking and risk management software products primarily for
insurance carriers, state insurance funds and third party administrators
primarily in the workers' compensation insurance field. Under the terms of the
acquisition, accounted for as a pooling of interests, HNC exchanged 1,891 shares
of common stock for all of the then outstanding shares of Risk Data preferred
and common stock.

     On November 29, 1996, HNC completed an acquisition of all of the
outstanding shares of Retek Distribution Corporation ("Retek"). Retek develops,
markets and supports inventory management system software primarily for
customers in the retail industry. Under the terms of the acquisition, accounted
for as a pooling of interests, HNC exchanged 1,367 shares of common stock for
all of the then outstanding shares of Retek common stock.

     On November 28, 1997, HNC completed an acquisition of all of the
outstanding shares of CompReview, Inc. ("CompReview"). CompReview develops,
markets and supports cost containment software for workers' compensation
insurance carriers and for insurers that handle automobile accident personal
injury claims. Under the terms of the acquisition, accounted for as a pooling of
interests, HNC exchanged 4,886 shares of common stock for all of the then
outstanding shares of CompReview common stock.

     The consolidated financial statements and related notes give retroactive
effect to all three acquisitions for all of the periods presented. The
consolidated balance sheet as of December 31, 1996 and 1997 includes the
accounts of Risk Data, Retek and CompReview as of December 31, 1996 and 1997.
The consolidated statements of income, of cash flows and of changes in
stockholders' equity for each of the three years in the period ended December
31, 1997 include the results of Risk Data, Retek and CompReview for each of the
years then ended. The term "HNC" as used in these consolidated financial
statements refers to HNC and its subsidiaries, including Risk Data, Retek and
CompReview.



                                      F-7
<PAGE>   143

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     No adjustments to conform the accounting methods of the acquired companies
to the accounting methods of HNC were required. Certain amounts have been
reclassified with regard to presentation of the financial information of the
acquired companies. Revenues and net income (loss) for each of the previously
separate companies for the periods prior to their respective acquisition dates
are as follows:


<TABLE>
<CAPTION>
                                                                    SIX MONTHS            NINE MONTHS
                                                                       ENDED                 ENDED
                                     YEAR ENDED DECEMBER 31,         JUNE 30,            SEPTEMBER 30,
                          --------------------------------------                   ------------------------
                            1995           1996          1997          1996           1996           1997
                          ---------     ---------     ----------     ---------     ---------      ---------
                                                                    (UNAUDITED)           (UNAUDITED)
<S>                       <C>           <C>           <C>            <C>           <C>            <C>      
 Revenues:
   HNC...............     $  25,174     $  53,833     $  113,735     $  16,478     $  31,423      $  62,683
   Risk Data.........         4,577            --             --         2,600            --             --
   Retek.............           921            --             --         3,377         5,635             --
   CompReview........        13,032        17,606             --         8,119        12,631         18,971
                          ---------     ---------     ----------     ---------     ---------      ---------
                          $  43,704     $  71,439     $  113,735     $  30,574     $  49,689      $  81,654
                          =========     =========     ==========     =========     =========      =========
 Net income (loss):
   HNC...............     $   4,457     $   6,376     $   17,565     $   1,780     $     975      $   7,597
   Risk Data.........        (1,952)           --             --        (2,184)           --             --
   Retek.............          (382)           --             --            43            93             --
   CompReview........         3,954         5,517             --         2,123         3,679          6,702
                          ---------     ---------     ----------     ---------     ---------      ---------
                          $   6,077     $  11,893     $   17,565     $   1,762     $   4,747      $  14,299
                          =========     =========     ==========     =========     =========      =========
</TABLE>

     Transaction costs of $563, $515 and $1,440 were incurred to complete the
acquisitions of Risk Data, Retek and CompReview, respectively. Transaction costs
were deferred and charged to income when the related transactions were
consummated. Transaction costs consisted primarily of investment banker, legal
and accounting fees, and printing, mailing and registration expenses.

Principles of Consolidation

     The consolidated financial statements include the accounts of HNC and its
wholly-owned subsidiaries. All significant intercompany transactions and
balances have been eliminated.

     During 1996, HNC established Aptex Software Inc. ("Aptex"), a majority
owned subsidiary, in order to develop, market and support certain text analysis
technology that is being used to develop products for the Internet market. The
minority stockholders' interest in Aptex's financial position and results of
operations is presented as a minority interest in HNC's consolidated financial
statements.

Financial Statement Preparation

     The preparation of financial statements, in conformity with generally
accepted accounting principles, requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the dates of the financial
statements and the reported amounts of revenues and expenses during the
reporting periods. Actual results could differ from those estimates.

Cash Equivalents

     Cash equivalents are highly liquid investments and consist of investments
in money market accounts and commercial paper purchased with maturities of three
months or less.



                                      F-8
<PAGE>   144

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

Investments

     Management determines the appropriate classification of its investments in
marketable debt and equity securities at the time of purchase and re-evaluates
such designation as of each balance sheet date. HNC classifies all securities as
"available for sale" and carries them at fair value with unrealized gains or
losses related to these securities included in stockholders' equity in HNC's
consolidated balance sheet.

Property and Equipment

     Property and equipment are recorded at cost. HNC computes depreciation and
amortization using either the straight-line method over the estimated useful
lives of the assets of three to seven years or an accelerated method over the
estimated useful lives of the assets of five to seven years. HNC amortizes
leasehold improvements over the shorter of their estimated useful lives or the
remaining term of the related lease. Repair and maintenance costs are charged to
expense as incurred.

Software Costs

     Software costs are recorded at cost and amortized over their estimated
useful lives of 36 to 42 months. Software costs are comprised of purchased
software and other rights that are stated at the lower of cost or net realizable
value. At December 31, 1996 and 1997, software costs of $2,561 and $2,581,
respectively, were included in other assets in the consolidated balance sheet
net of accumulated amortization of $642 and $1,451, respectively.

     Development costs for software to be licensed or sold that are incurred
from the time technological feasibility is established until the product is
available for general release to customers are capitalized and reported at the
lower of cost or net realizable value. Through December 31, 1997, no significant
amounts were expended subsequent to reaching technological feasibility.

Long-Lived Assets

     HNC investigates potential impairments of long-lived assets, certain
identifiable intangibles and associated goodwill when events or changes in
circumstances have made recovery of an asset's carrying value unlikely. An
impairment loss would be recognized if the sum of the expected future net cash
flows were less than the carrying amount of the asset. No such impairments of
long-lived assets existed through December 31, 1997.

Stock-Based Compensation

     HNC measures compensation expense for its stock-based employee compensation
plans using the intrinsic value method and provides pro forma disclosures of net
income and earnings per share as if the fair value-based method had been applied
in measuring compensation expense.

Revenue Recognition

     HNC's revenue from periodic software license and maintenance agreements is
generally recognized ratably over the respective license periods. Revenue from
certain short-term periodic software license and maintenance agreements with
guaranteed minimum license fees is recognized as related services are performed.
Transactional fees are recognized as revenue based on system usage or when fees
based on system usage exceed the monthly minimum license fees. Revenue from
perpetual licenses of HNC's software for which there are no significant
continuing obligations and collection of the related receivables is probable is
recognized on delivery of the software and acceptance by the customer. Revenue
from hardware product sales, which is included in contracts and other revenue,
is recognized upon shipment to the customer.


                                      F-9
<PAGE>   145

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     HNC's revenue from software installation and implementation and from
contract services is generally recognized as the services are performed using
the percentage of completion method based on costs incurred to date compared to
total estimated costs at completion. Amounts received under contracts in advance
of performance are recorded as deferred revenue and are generally recognized
within one year from receipt. Contract losses are recorded as a charge to income
in the period such losses are first identified. Unbilled accounts receivable are
stated at estimated realizable value.

     Service bureau fees are from review and repricing of customers' medical
bills and are assessed to customers on the basis of volume of bills processed
and are recognized as revenue when the processing services are performed.

Income Taxes

     HNC's current income tax expense is the amount of income taxes expected to
be payable for the current year. A deferred income tax asset or liability is
computed for the expected future impact of differences between the financial
reporting and tax bases of assets and liabilities as well as the expected future
tax benefit to be derived from tax loss and tax credit carryforwards. Valuation
allowances are established, when necessary, to reduce deferred tax assets to the
amount "more likely than not" to be realized in future tax returns. Tax rate
changes are reflected in income during the period such changes are enacted.

Net Income Per Common Share

     HNC adopted Statement of Financial Accounting Standard No. 128 ("FAS 128"),
"Earnings per Share," for fiscal 1997 and retroactively restated all prior
periods to conform with FAS 128 as required. Basic net income per common share
is computed as net income less accretion of dividends on mandatorily redeemable
convertible preferred stock divided by the weighted average number of common
shares outstanding during the period. Diluted net income per common share is
computed as net income divided by the weighted average number of common shares
and potential common shares, using the treasury stock method, outstanding during
the period and assumes conversion into common stock at the beginning of each
period of all outstanding shares of convertible preferred stock (Note 8).

Unaudited Pro Forma Data

     Prior to the acquisition of CompReview by HNC on November 28, 1997,
CompReview had elected subchapter S corporation status for income tax purposes;
therefore, its income was included in the tax returns of its stockholders, and
no income tax provision was recorded for CompReview other than certain minimum
state taxes on subchapter S corporations. As a result of the acquisition,
beginning November 29, 1997, CompReview became subject to corporate income taxes
on its taxable income. For comparative purposes, the consolidated statement of
income includes unaudited pro forma adjusted data with respect to the merged
companies' income tax provision as if CompReview had been subject to corporate
income taxes on its taxable income for all periods presented.

Foreign Currency Translation

     The financial statements of HNC's international operations are translated
into U.S. dollars using period-end exchange rates for assets and liabilities and
average exchange rates during the period for revenues and expenses. Cumulative
translation gains and losses are excluded from results of operations and
recorded as a separate component of stockholders' equity. Gains and losses
resulting from foreign currency transactions (transactions denominated in a
currency other than the entity's local currency) are included in the
consolidated statement of income and are not material.


                                      F-10
<PAGE>   146


                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

Diversification of Credit Risk

     HNC's financial instruments that are subject to concentrations of credit
risk consist primarily of cash equivalents, investments available for sale and
accounts receivable, which are generally not collateralized. HNC's policy is to
place its cash, cash equivalents and investments available for sale with high
credit quality financial institutions and commercial companies and government
agencies in order to limit the amount of its credit exposure. HNC's software
license and installation agreements and commercial development contracts are
primarily with large customers in the healthcare/insurance, financial services
and retail industries. HNC maintains reserves for potential credit losses.

     HNC has one major product or product line in each of its three target
markets. In the healthcare/insurance market, revenues from one product accounted
for 29.8%, 24.6% and 23.0% of HNC's total revenues for 1995, 1996 and 1997,
respectively. During those same periods, one product in the retail market
accounted for 2.2%, 13.6% and 18.9%, respectively, of HNC's total revenues, and
one product line in the financial services market accounted for 28.0%, 20.9% and
16.0%, respectively, of HNC's total revenues. Revenues from international
operations and export sales, primarily to Western Europe and Canada, represented
approximately 12.6%, 17.7% and 16.8% of total revenues in 1995, 1996 and 1997,
respectively. Export sales were $4,595, $7,310 and $7,896 in 1995, 1996 and
1997, respectively.

Disclosures About Fair Value of Financial Instruments

     The carrying amounts of cash and cash equivalents and accrued liabilities
approximate fair value because of the short-term maturities of these financial
instruments. The carrying amounts of capital lease obligations approximate their
fair values based on interest rates currently available to HNC for borrowings
with similar terms and maturities.

Reincorporation and Stock Split

     In May 1995, HNC's stockholders approved an Agreement and Plan of Merger
whereby HNC merged with and into a newly incorporated Delaware corporation ("HNC
Delaware"), which is the surviving corporation. In conjunction with the merger,
each share of HNC's common stock, preferred stock and options and warrants to
purchase HNC's common stock was exchanged for one-half share of HNC Delaware's
common stock, preferred stock and options and warrants to purchase HNC
Delaware's common stock, at twice the exercise price for options and warrants.
In April 1996, HNC consummated a two-for-one stock split effected in the form of
a common stock dividend. All references to share and per share amounts of common
and preferred stock and other data in these financial statements have been
retroactively restated to reflect the reincorporation and stock split.

Comprehensive Income

     During the first quarter of 1998, HNC adopted Statement of Financial
Accounting Standards No. 130 ("FAS 130"), "Reporting Comprehensive Income." FAS
130 requires HNC to report in the financial statements, in addition to net
income, comprehensive income and its components including foreign currency items
and unrealized gains and losses on certain investments in debt and equity
securities. Comprehensive income is defined as "the change in equity (net
assets) of a business enterprise during a period from transactions and other
events and circumstances from non-owner sources. It includes all changes in
equity during a period except those resulting from investments by owners and
distributions to owners."

New Accounting Pronouncements

     In June 1997, the FASB issued Statement of Financial Accounting Standards
No. 131 ("FAS 131"), "Disclosures about Segments of an Enterprise and Related
Information," which HNC is required to adopt for its 1998 annual financial
statements. This statement establishes standards for reporting information about
operating segments in annual financial statements and requires selected
information about operating segments in interim financial reports issued to
stockholders. It also establishes standards for related disclosures about
products and services, geographic areas and major customers. Under FAS 131,
operating segments are to be determined consistent with the way that management
organizes and evaluates financial information internally for making operating
decisions and assessing performance. HNC has not determined the impact of the
adoption of this new accounting standard on its consolidated financial statement
disclosures.


                                      F-11
<PAGE>   147



                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     In June 1998, the Financial Accounting Standards Board issued Statement of
Accounting Standards No. 133 "Accounting for Derivative Instruments and Hedging
Activities" ("FAS 133") which HNC will be required to adopt for its 2000 annual
financial statements. This statement establishes a new model for accounting for
derivatives and hedging activities. Under FAS 133, all derivatives must be
recognized as assets and liabilities and measured at fair value. HNC has not
determined the impact of the adoption of this new accounting standard on its
consolidated financial position or results of operations.

Reclassifications

     Certain prior year balances have been reclassified to conform to the
current year presentation.

NOTE 2 -- COMPOSITION OF CERTAIN FINANCIAL STATEMENT CAPTIONS

<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                          -------------------------
                                                              1996           1997
                                                          -----------    ----------
Accounts receivable, net:
<S>                                                        <C>           <C>      
  Billed.............................................      $  13,266      $  27,812
  Unbilled...........................................          9,299          8,368
                                                           ---------      ---------
                                                              22,565         36,180
Less allowance for doubtful accounts.................           (709)        (3,200)
                                                           ---------      ---------
                                                           $  21,856      $  32,980
                                                           =========      =========
</TABLE>

     Unbilled accounts receivable represent revenue recorded in excess of
amounts billable pursuant to contract provisions and generally become billable
at contractually specified dates or upon the attainment of milestones. Unbilled
amounts are expected to be realized within one year.

<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                            ------------------------
                                                                1996          1997
                                                            -----------   ----------
<S>                                                          <C>           <C>      
Property and equipment, net:
  Computer equipment....................................     $   9,302     $  15,611
  Furniture and fixtures................................         2,210         4,632
  Leasehold improvements................................           273         1,012
                                                             ---------     ---------
                                                                11,785        21,255
Less accumulated depreciation and amortization..........        (5,446)       (9,153)
                                                             ---------     ---------
                                                             $   6,339     $  12,102
                                                             =========     =========

Accrued liabilities:
Payroll and related benefits............................      $ 1,645       $ 3,456
  Vacation..............................................          860           927
  Other.................................................        1,928         1,550
                                                             --------       -------
                                                             $  4,433     $   5,933
                                                             ========     =========

</TABLE>



                                      F-12
<PAGE>   148

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

NOTE 3 -- INVESTMENTS

     At December 31, 1996 and 1997, the amortized cost and estimated fair value
of investments available for sale were as follows:

<TABLE>
<CAPTION>
                                                             DECEMBER 31, 1996
                                           ----------------------------------------------------
                                            AMORTIZED    UNREALIZED    UNREALIZED       FAIR
                                              COST          GAINS        LOSSES         VALUE
                                           ----------    ----------    ----------   -----------
<S>                                        <C>           <C>           <C>          <C>      
U.S. government and federal agencies...    $  18,212        $  --        $  (38)      $  18,174
Foreign government debt................        1,006           --            (2)          1,004
U.S. corporate debt....................        4,851           --           (14)          4,837
Foreign corporate debt.................        2,718           --            (5)          2,713
                                           ---------        -----        ------       ---------
                                           $  26,787        $  --        $  (59)      $  26,728
                                           =========        =====        ======       =========
</TABLE>

<TABLE>
<CAPTION>
                                                             DECEMBER 31, 1997
                                           ----------------------------------------------------
                                            AMORTIZED    UNREALIZED    UNREALIZED       FAIR
                                              COST          GAINS        LOSSES         VALUE
                                           ----------    ----------    ----------   -----------
<S>                                        <C>           <C>           <C>          <C>      
U.S. government and federal agencies...    $  20,682        $  --         $  (1)      $  20,681
U.S. corporate debt....................        1,894           --            (1)          1,893
Foreign corporate debt.................        2,304           --            --           2,304
                                           ---------        -----         -----       ---------
                                           $  24,880        $  --         $  (2)      $  24,878
                                           =========        =====         =====       =========
</TABLE>

     No significant gains or losses were realized during the years ended
December 31, 1996 and 1997. The cost of securities sold is determined by the
specific identification method.

NOTE 4 -- NOTES PAYABLE

     HNC has a Credit Agreement with a bank which provides for a $15,000
revolving line of credit through July 11, 1999. The agreement requires that HNC
maintain certain financial ratios and levels of working capital, tangible net
worth and profitability, and also restricts HNC's ability to pay cash dividends
and make loans, advances or investments without the bank's consent. At December
31, 1997, HNC had no amounts outstanding under the revolving line of credit.
Interest is payable monthly at the bank's prime rate or LIBOR rate plus 1.5%.
The applicable interest rate was 7.22% at December 31, 1997.

     The Risk Data credit facilities were comprised of a revolving line of
credit secured by eligible accounts receivable, as well as a bridge loan that
was secured by the guarantees of certain stockholders. The revolving line of
credit matured on January 5, 1997. The bridge loan matured on September 5, 1996.
All outstanding amounts were repaid during 1996, and neither credit facility was
renewed.

     During 1995, the preferred stockholders of Risk Data loaned HNC $1,000
under subordinated note agreements (secured by the assets of Risk Data but
subordinated to borrowings under the Risk Data line of credit) bearing interest
at 9%. All outstanding amounts were repaid during 1996.

NOTE 5 -- LEASES

   
     At December 31, 1997, HNC was obligated through 2004 under noncancelable
operating leases for its facilities and certain equipment as follows:
    

<TABLE>
<CAPTION>
                                                                               NET FUTURE
                                      FUTURE MINIMUM       LESS SUBLEASE      MINIMUM LEASE
                                      LEASE PAYMENTS          INCOME            PAYMENTS
                                      --------------       -------------      -------------
<S>                                   <C>                  <C>                <C>    
1998...........................          $  2,984             $  127             $ 2,857
1999...........................             3,047                 --               3,047
2000...........................             3,043                 --               3,043
2001...........................             2,994                 --               2,994
2002...........................             2,884                 --               2,884
thereafter.....................             1,535                 --               1,535
</TABLE>

                                      F-13
<PAGE>   149

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     The lease for HNC's corporate headquarters provides for scheduled rent
increases and an option to extend the lease for five years with certain changes
to the terms of the lease agreement and a refurbishment allowance. Rent expense
under operating leases for the years ended December 31, 1995, 1996 and 1997 was
approximately $1,503, $1,623 and $2,687, respectively, net of sublease income of
$83, $125 and $477, respectively.

     Risk Data maintains a lease line of credit with a leasing company for the
acquisition of equipment under capital lease arrangements. Future minimum
payments are $222 for 1998 and $66 for 1999 with a total of $34 of such amounts
representing interest.

     The gross value of assets under capital leases at December 31, 1996 and
1997 was $1,481 and $714, and accumulated amortization was $599 and $556,
respectively. Amortization expense for assets acquired under capital leases is
included in depreciation expense.

NOTE 6 -- CAPITAL STOCK

     During June 1995, HNC completed its initial public offering of 5,176 shares
of common stock (of which 2,376 shares were sold by HNC and 2,800 shares were
sold by certain selling stockholders) at a price to the public of $7.00 per
share, which resulted in net proceeds to HNC of $15,461 after the payment of
underwriters' commissions but before the deduction of offering expenses. Upon
the closing of HNC's initial public offering, all outstanding shares of Series
A, B, C, D and E convertible preferred stock were automatically converted into
shares of common stock at their then effective conversion prices. Upon
conversion, the preferred stockholders were no longer entitled to any undeclared
cumulative dividends and all class voting rights terminated.

     During December 1995, HNC completed a follow-on public offering of 3,000
shares of common stock (of which 1,116 shares were sold by HNC and 1,884 shares
were sold by certain selling stockholders) at a price to the public of $18.50
per share, which resulted in net proceeds to HNC of $19,606 after the payment of
underwriters' commissions but before the deduction of offering expenses.

     HNC's Board of Directors is authorized to issue up to 4,000 shares of
preferred stock and to determine the price, rights, preferences, privileges and
restrictions, including voting rights, of those shares without any further vote
or action by the stockholders. The rights of the holders of common stock will be
subject to the rights of the holders of any preferred stock that may be issued
in the future.

NOTE 7 -- INCOME TAXES

Income (loss) before income tax (benefit) provision was taxed under the
following jurisdictions:

<TABLE>
<CAPTION>
                                          YEAR ENDED DECEMBER 31,
                                 ------------------------------------------
                                     1995            1996           1997
                                 ------------    ------------   ------------
<S>                              <C>             <C>            <C>      
Domestic.....................      $  5,764        $   8,599      $  23,907
Foreign......................          (198)           2,760          1,012
                                   --------        ---------      ---------
                                   $  5,566        $  11,359      $  24,919
                                   ========        =========      =========

</TABLE>



                                      F-14
<PAGE>   150


                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     The income tax (benefit) provision is summarized as follows:

<TABLE>
<CAPTION>
                                           YEAR ENDED DECEMBER 31,
                                  -----------------------------------------
                                      1995           1996           1997
                                  ------------   ------------   -----------
<S>                               <C>            <C>            <C>     
CURRENT:
  Federal....................        $   97        $  1,132       $  2,257
  State......................           143             204            537
  Foreign....................            --              51            233

DEFERRED:
  Federal....................          (521)         (1,569)         3,197
  State......................          (186)            (56)           985
  Foreign....................           (44)           (296)           145
                                     ------        --------       --------
                                     $ (511)       $   (534)      $  7,354
                                     ======        ========       ========
</TABLE>

Deferred tax assets are summarized as follows:

<TABLE>
<CAPTION>
                                                            YEAR ENDED
                                                           DECEMBER 31,
                                                   --------------------------
                                                       1996            1997
                                                   -----------     ----------
<S>                                                <C>             <C>      
Taxable pooling basis difference..............      $  18,397       $  16,955
Net operating loss carryforwards..............          8,587           7,404
Tax credit carryforwards......................          1,878           2,059
Other.........................................            487             214
                                                    ---------       ---------
Gross deferred tax assets.....................         29,349          26,632
Deferred tax asset valuation allowance........             --              --
                                                    ---------       ---------
          Net deferred tax asset..............      $  29,349       $  26,632
                                                    =========       =========
</TABLE>

     During 1995, HNC released the valuation allowance related to its deferred
tax assets based on management's assessment that it was more likely than not
that HNC would realize a portion of those assets in future periods due to
improvements in HNC's operating results. During 1996, HNC released the valuation
allowances related to Risk Data's and Retek's deferred tax assets based on
management's assessment that it was more likely than not that HNC would realize
those assets in future periods due to improvements in the operating results of
those subsidiaries.

     During 1995, 1996 and 1997, HNC realized certain tax benefits related to
stock option transactions in the amount of $800, $7,889 and $4,192,
respectively. The benefit from the stock option tax deduction is credited
directly to paid-in capital.

     During 1996, in connection with the acquisition of Retek, HNC made an
Internal Revenue Code Section 338 election for federal and state tax purposes,
resulting in the treatment of the acquisition as a taxable transaction, whereby
the tax bases of the acquired assets and liabilities were adjusted to their fair
values as of the date of the acquisition. As the purchase price exceeded the
carrying value of the net assets acquired by approximately $46,000, HNC recorded
a deferred tax asset in the amount of $18,397.

     A reconciliation of the income tax (benefit) provision to the amount
computed by applying the statutory federal income tax rate to income before
income tax provision is summarized as follows:

<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER 31,
                                               ----------------------------------------
                                                   1995          1996           1997
                                               ------------  ------------   -----------
<S>                                            <C>           <C>            <C>      
Amounts computed at statutory federal rate..     $   1,892     $   3,862      $   8,472
     State income taxes.....................           465           554          1,407
     Subchapter S corporation earnings......        (1,366)       (1,901)        (2,888)
     Change in tax status of S corporation..            --            --            869
     Tax credit carryforwards generated.....           (68)         (334)          (284)
     Release of valuation allowance.........        (2,223)       (2,717)            --
     Foreign income taxes...................           (44)         (296)            27
     Losses without tax benefit.............           794            --             --
     Other..................................            39           298           (249)
                                                 ---------     ---------      ---------
Income tax (benefit) provision..............     $    (511)    $    (534)     $   7,354
                                                 =========     =========      =========
</TABLE>

                                      F-15
<PAGE>   151

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     Prior to the acquisition of CompReview by HNC on November 28, 1997,
CompReview had elected subchapter S corporation status and the cash basis of
accounting for income tax purposes; therefore, its cash basis income was
included in the tax returns of its stockholders, and no income tax provision was
recorded for CompReview other than certain minimum state taxes on subchapter S
corporations. As of the date of CompReview's acquisition, its tax status was
changed to C corporation status with the accrual basis of accounting. As a
result of this change in tax status, HNC recorded a deferred tax liability in
the amount of $869 based on the cumulative income recognition differences as of
the date of acquisition between CompReview's former and prospective tax
accounting methods.

     At December 31, 1997, HNC had federal, state and foreign net operating loss
carryforwards of approximately $19,992, $7,785 and $352, respectively. The net
operating loss carryforwards expire as follows:

<TABLE>
<S>                                   <C>      
2001.............................     $   6,982
2003.............................            84
2005.............................           123
2006.............................         1,670
2007.............................            17
2008.............................         1,692
2009.............................         1,370
2010.............................         1,840
2011.............................        14,086
</TABLE>

   
     HNC also has approximately $1,295 of federal research and development
credit carryforwards, which expire from 2000 to 2012, $711 of state research and
development credit carryforwards, which have no expiration date, and $53 of
foreign tax credit carryforwards, which expire from 1999 to 2002. Certain of
these net operating loss and research and development credit carryforwards
generated by Risk Data, Retek and CompReview prior to their acquisitions by HNC
are subject to annual limitations on their utilization and also are limited to
utilization solely by the company that generated them. Should a substantial
change in HNC's ownership occur, as defined by the Tax Reform Act of 1986, there
will be an annual limitation on its utilization of net operating loss and
research and development credit carryforwards.
    

NOTE 8 -- RECONCILIATION OF NET INCOME AND SHARES USED IN PER SHARE COMPUTATIONS

<TABLE>
<CAPTION>
                                                                                      YEAR ENDED DECEMBER 31,
                                                                             ---------------------------------------
                                                                                 1995          1996          1997
                                                                             ------------  ------------  -----------
<S>                                                                          <C>           <C>           <C>      
NET INCOME USED:
Net income used in computing basic net income per common share.............    $   5,729     $  11,893     $  17,565
Add back accretion of dividends on mandatorily redeemable convertible
  preferred stock..........................................................          348            --            --
                                                                               ---------     ---------     ---------
Net income used in computing diluted net income per common share...........    $   6,077     $  11,893     $  17,565
                                                                               =========     =========     =========
SHARES USED:
Weighted average common shares outstanding used in computing basic net
  income per common share..................................................       15,195        23,552        24,275
  Weighted average options and warrants to purchase common stock as
    determined by application of the treasury stock method.................        1,995         1,796         1,383
  Incremental shares for assumed conversion of convertible preferred
    stock..................................................................        4,265            --            --
  Purchase Plan common stock equivalents...................................           55            15            23
                                                                               ---------     ---------     ---------
Shares used in computing diluted net income per common share...............       21,510        25,363        25,681
                                                                               =========     =========     =========
</TABLE>

     All outstanding shares of HNC's preferred stock automatically converted
into shares of common stock upon the closing of HNC's initial public offering on
June 26, 1995. Shares used in computing diluted net income per common share for
1995 assume conversion of all outstanding shares of convertible preferred stock
were converted at the beginning of that year.



                                      F-16
<PAGE>   152

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

NOTE 9 -- EMPLOYEE BENEFIT PLANS

    During 1987, HNC adopted the 1987 Stock Option Plan and reserved 2,500
shares of HNC's common stock for issuance pursuant to nonqualified and incentive
stock options to its officers, directors, key employees and consultants. The
plan, as amended, is administered by the Board of Directors or its designees and
provides generally that, for incentive stock options and nonqualified stock
options, the exercise price must not be less than the fair market value of the
shares as determined by the Board of Directors at the date of grant. The options
expire no later than ten years from the date of grant and may be exercised in
installments based upon stipulated timetables (not in excess of seven years). At
December 31, 1997, options to purchase 490 shares were exercisable.

     During 1995, HNC adopted the 1995 Directors Stock Option Plan (the
"Directors Plan"), the 1995 Equity Incentive Plan (the "Incentive Plan") and the
1995 Employee Stock Purchase Plan (the "Purchase Plan"). For purposes of the
discussion contained in the three paragraphs below, "fair market value" means
the closing price of HNC's common stock on the Nasdaq National Market on the
grant date.

     The Directors Plan provides for the issuance of up to 300 nonqualified
stock options to HNC's outside directors. Under the provisions of the Directors
Plan, options to purchase 25 shares of HNC's common stock are granted to outside
directors upon their respective dates of becoming members of the Board of
Directors and options to purchase ten shares of such stock will be granted on
each anniversary of such dates. Options under the Directors Plan are granted at
the fair market value of the stock at the grant date and vest at specific times
over a four-year period. At December 31, 1997, options to purchase 72 shares
were exercisable.

     The Incentive Plan provides for the issuance of up to 3,550 shares of HNC's
common stock in the form of nonqualified or incentive stock options, restricted
stock or stock bonuses. In addition, all shares that remained unissued under the
1987 Stock Option Plan on the effective date of the Incentive Plan, and all
shares issuable upon exercise of options granted pursuant to the 1987 Stock
Option Plan that expire or become unexercisable for any reason without having
been exercised in full are available for issuance under the Incentive Plan.
Nonqualified stock options and restricted stock may be awarded at a price not
less than 85% of the fair market value of the stock at the date of the award.
Incentive stock options must be awarded at a price not less than 100% of the
fair market value of the stock at the date of the award. Options granted under
the Incentive Plan may have a term of up to ten years. HNC has the discretion to
provide for restrictions and the lapse thereof in respect of restricted stock
awards. Options typically vest at the rate of 25% of the total grant per year
over a four-year period; however, HNC may, at its discretion, implement a
different vesting schedule with respect to any new stock option grant. At
December 31, 1997, 316 shares were exercisable.

     The Purchase Plan provides for the issuance of a maximum of 400 shares of
common stock. Each purchase period, eligible employees may designate between 2%
and 10% of their cash compensation, subject to certain limitations, to be
deducted from their compensation for the purchase of common stock under the
Purchase Plan. The purchase price of the shares under the Purchase Plan is equal
to 85% of the lesser of the fair market value per share on the first day of the
twelve-month offering period or the last day of each six-month purchase period.
Approximately 60% of eligible employees have participated in the Purchase Plan
in the last two years.

     Risk Data's stock option plan is administered by HNC's Board of Directors.
All outstanding Risk Data options were converted into options to purchase HNC
common stock and adjusted to give effect to the acquisition exchange ratio in
the Risk Data acquisition. No changes were made to the terms of the Risk Data
options in connection with the exchange. Options granted under the Risk Data
stock option plan generally vest at the rate of 25% of the total grant per year
and expire ten years after the date of grant. At December 31, 1997, 30 shares
were exercisable under the Risk Data plan.

     Retek's stock options are administered by HNC's Board of Directors. All
outstanding Retek options were converted into options to purchase HNC's common
stock and adjusted to give effect to the acquisition exchange ratio in the Retek
acquisition. No changes were made to the terms of the Retek options in
connection with the exchange. Options granted vest ratably over periods from one
to four years and have a term of up to ten years. At December 31, 1997, options
to purchase 32 shares were exercisable.



                                      F-17
<PAGE>   153

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     The CompReview 1995 Stock Option Plan is administered by HNC's Board of
Directors. All outstanding CompReview stock options were converted into options
to purchase HNC common stock in the CompReview acquisition and adjusted to give
effect to the acquisition exchange ratio. No changes were made to the terms of
the CompReview options in connection with the exchange. Options granted under
the CompReview Stock Option Plan generally vest ratably over periods from two to
four years and expire ten years after the date of grant. At December 31, 1997,
options to purchase 156 shares were exercisable.

     Transactions under HNC's stock option and purchase plans during the years
ended December 31, 1995, 1996 and 1997, including options under the Risk Data
stock option plan, options under the Retek stock option plan and options under
the CompReview Stock Option Plan, but excluding options to purchase stock of
Aptex, a subsidiary of HNC, are summarized as follows.

<TABLE>
<CAPTION>
                                                                       YEAR ENDED DECEMBER 31,
                                     -----------------------------------------------------------------------------------------
                                               1995                         1996                              1997
                                     --------------------------   ----------------------------     ---------------------------
                                               WEIGHTED AVERAGE               WEIGHTED AVERAGE                WEIGHTED AVERAGE
                                       SHARES   EXERCISE PRICE     SHARES      EXERCISE PRICE        SHARES    EXERCISE PRICE
                                       ------   --------------     ------      --------------        ------    --------------
<S>                                  <C>       <C>                <C>         <C>                  <C>        <C>   
Outstanding at beginning of year....    2,080      $0.49            2,868        $2.84                3,215        $15.65
  Options granted...................    1,272       6.08            1,645        27.98                2,177         32.61
  Options exercised.................     (207)      0.52           (1,140)        0.96                 (475)         6.16
  Options canceled..................     (277)      1.80             (158)       17.62                 (326)        26.33
                                     --------                     -------                          --------
Outstanding at end of year..........    2,868       2.84            3,215        15.65                4,591         23.92
                                     ========                     =======                          ========
Options exercisable at end of
  year..............................    1,437                         841                             1,096
Weighted average fair value of
  options granted during the year... $   3.10                      $14.50                          $  19.79
</TABLE>

     The following table summarizes information about employee stock options
outstanding at December 31, 1997:

<TABLE>
<CAPTION>
                                              
                                             OPTIONS OUTSTANDING
                               ------------------------------------------------        OPTIONS EXERCISABLE
                                                    WEIGHTED                       ---------------------------
                                    NUMBER           AVERAGE        WEIGHTED           NUMBER         WEIGHTED
                                OUTSTANDING AT      REMAINING        AVERAGE       OUTSTANDING AT      AVERAGE
         RANGE OF                DECEMBER 31,      CONTRACTUAL      EXERCISE        DECEMBER 31,      EXERCISE
       EXERCISE PRICES               1997        LIFE (IN YEARS)      PRICE             1997            PRICE
- ---------------------------    ---------------   ---------------  -------------    ---------------  ----------
<S>        <C>                 <C>               <C>              <C>              <C>              <C>  
$0.02      to  $ 3.00                1,002          5.90            $1.90                 702         $1.60
 4.50           25.38                  793          8.21            19.22                 188         15.69
25.60           30.75                  791          8.86            29.39                 147         30.33
30.81           31.50                  944          9.57            31.40                   1         30.94
31.88           39.00                  774          9.42            36.03                  32         34.24
39.09           49.50                  287          9.27            41.42                  26         42.64
                                    ------                                             ------
 0.02           49.50                4,591          8.37            23.92               1,096          9.82
                                    ======                                             ======
</TABLE>

     During 1996, Aptex adopted the 1996 Equity Incentive Plan (the "Aptex
Plan") whereby 2,000 shares of Aptex common stock were reserved for issuance
pursuant to nonqualified and incentive stock options and restricted stock
awards. The plan is administered by the Board of Directors of Aptex or its
designees and provides generally that nonqualified stock options and restricted
stock may be awarded at a price not less than 85% of the fair market value, as
determined by the Board of Directors, of the stock at the date of the award.
Incentive stock options must be awarded at a price not less than 100% of the
fair market value of the stock at the date of the award, or 110% of fair market
value for awards to more than 10% stockholders. Options granted under the
Incentive Plan may have a term of up to ten years. HNC has the discretion to
provide for restrictions and the lapse thereof in respect of restricted stock
awards, and options typically vest at the rate of 25% of the total grant per
year. However, HNC may, at its discretion, implement a different vesting
schedule with respect to any new stock option grant. During 1996, Aptex issued
1,000 shares of common stock at fair market value under the Aptex Plan for cash
consideration of $0.03 per share. At December 31, 1997, options to purchase 79
shares were exercisable under the Aptex Plan.



                                      F-18
<PAGE>   154

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

     HNC applies Accounting Principles Board Opinion No. 25 and related
Interpretations in accounting for its stock-based compensation. No compensation
expense has been recognized for its employee stock option grants, which are
fixed in nature, as the options have been granted at fair market value. No
compensation expense has been recognized for the Purchase Plan. Had compensation
cost for HNC's stock-based compensation awards issued during 1997 and 1996 been
determined based on the fair value at the grant dates of awards consistent with
the method of Financial Accounting Standards Board Statement No. 123 ("FAS
123"), HNC's net income and basic and diluted pro forma net income per common
share would have been reduced to the pro forma amounts indicated below:

<TABLE>
<CAPTION>
                                                  YEAR ENDED DECEMBER 31,
                                           ------------------------------------
                                               1995         1996         1997
                                           -----------  -----------  ----------
<S>                                        <C>          <C>          <C>      
 Net income:
   As reported...........................    $ 6,077     $  11,893    $  17,565
   Pro forma.............................      5,126         6,122        2,232
 Basic net income per common share:
   As reported...........................       0.38          0.50         0.72
   Pro forma.............................       0.31          0.26         0.09
 Diluted net income per common share:
   As reported...........................       0.28          0.47         0.68
   Pro forma.............................       0.24          0.24         0.09
</TABLE>

     The fair value of each option grant is estimated on the date of grant using
the Black-Scholes option pricing model with the following weighted average
assumptions used for grants during the years ended December 31, 1995, 1996 and
1997, respectively: dividend yield of 0.0% for all three years, risk-free
interest rates of 6.29%, 6.03% and 6.10%, expected volatilities of 75%, 70% and
65% (0% for 1995 and 1996 options granted by Risk Data, Retek and CompReview
prior to their acquisition by HNC), and expected lives of 3.5, 3.5 and 3.0
years. The fair value of the employees' purchase rights pursuant to the Purchase
Plan is estimated using the Black-Scholes model with the following assumptions:
dividend yield of 0.0% for all three years, risk-free interest rates of 5.66%,
5.36% and 5.32%, expected volatilities of 75%, 70% and 65%, and an expected life
of 6 months for all three years. The weighted average fair value of those
purchase rights granted in 1995, 1996 and 1997 was $2.75, $9.61 and $14.10,
respectively.

     The fair value of each option granted under the Aptex Plan is estimated on
the date of grant using the Black-Scholes option pricing model with the
following weighted average assumptions used for grants during the years ended
December 31, 1996 and 1997: dividend yield of 0.0% for both years, risk-free
interest rates of 6.42% and 6.33%, expected volatility of 90% for both years,
and expected lives of 9.25 and 8.0 years. Options to purchase 704 shares and 214
shares were granted during 1996 and 1997, with weighted average exercise prices
per share of $0.03 and $0.08, respectively. During 1997, options to purchase 173
shares with a weighted average exercise price of $0.03 per share were exercised.
During 1997, options to purchase 58 shares with a weighted average exercise
price of $0.03 per share were cancelled. The weighted average fair value per
share of options granted during 1996 and 1997 was $0.03 and $0.07, respectively.

     The following table summarizes information about Aptex employee stock
options outstanding at December 31, 1997:

<TABLE>
<CAPTION>
                                                             OPTIONS OUTSTANDING            
                                               ---------------------------------------------           OPTIONS EXERCISABLE
                                                                  WEIGHTED                             -------------------
                                                   NUMBER          AVERAGE         WEIGHTED          NUMBER          WEIGHTED
                                               OUTSTANDING AT     REMAINING         AVERAGE      OUTSTANDING AT       AVERAGE
                                RANGE OF        DECEMBER 31,     CONTRACTUAL       EXERCISE       DECEMBER 31,       EXERCISE
                             EXERCISE PRICES        1997        LIFE (IN YEARS)     PRICE            1997             PRICE
                           ------------------  ---------------  ---------------   -----------    ---------------   ----------
<S>                         <C>                <C>              <C>               <C>            <C>               <C>  
                            $0.03 to $0.03           497          8.75              $0.03              79             $0.03
                             0.05     0.05            39          9.40               0.05              --                --
                             0.10     0.10           151          9.82               0.10              --                --
                                                    ----                                               --
                             0.03     0.10           687          9.03               0.05              79              0.03
                                                    ====                                               ==
</TABLE>

                                      F-19
<PAGE>   155

                                HNC SOFTWARE INC.

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)

NOTE 10 -- CONTINGENCIES

     Various claims arising in the course of business, seeking monetary damages
and other relief, are pending. The amount of the liability, if any, from such
claims cannot be determined with certainty; however, in the opinion of
management, the ultimate liability for such claims will not have a material
adverse effect on HNC's consolidated financial position, results of operations
or cash flows.

NOTE 11 -- SUBSEQUENT EVENTS

     On January 30, 1998, HNC signed a definitive agreement to acquire Practical
Control Systems Technologies, Inc. ("PCS"), a distribution center management
software vendor based in Cincinnati, Ohio, subject to the satisfaction of
certain closing conditions and the approval of PCS' shareholders. If
consummated, the acquisition of PCS will be accounted for under the purchase
method and will not be considered a "significant" acquisition pursuant to
regulations set forth by the Securities and Exchange Commission.

     On February 13, 1998, HNC adopted the 1998 Stock Option Plan (the "1998
Plan"), under which 1,000,000 shares of HNC Common Stock were reserved for
issuance pursuant to nonqualified stock options. The 1998 Plan is administered
by the Board of Directors of HNC or a committee appointed by the Board and
provides that nonqualified stock options granted under the plan must be awarded
at an exercise price of not less than 100% of the fair market value of the stock
at the date of grant. Options granted under the 1998 Plan may have a term of up
to ten years. No options have been granted under the 1998 Plan to date.

NOTE 12 -- SUBSEQUENT EVENTS (UNAUDITED)

           On March 31, 1998, HNC acquired PCS, based in Cincinnati, Ohio. PCS,
founded in 1985, is a supplier of fully integrated distribution center
management software that addresses the distribution business needs of the
retail, manufacturing and wholesale industries. HNC acquired PCS in exchange for
142,868 shares of HNC common stock, 14,286 of which are subject to an escrow to
secure certain indemnification obligations of the former PCS stockholders plus
the contingent right, subject to PCS' achievement of certain financial
objectives during calendar 1998 and 1999, to receive certain additional shares
of HNC common stock.

           On April 7, 1998, HNC acquired FTI. Incorporated in 1982, FTI is a
provider of profitability measurement and decision-support software to the
financial services industry and serves a substantial user base in the United
States, Canada, and Europe. HNC acquired FTI in exchange for the issuance of
396,617 shares of HNC common stock, 97,390 of which are subject to an escrow to
secure certain indemnification obligations of the former FTI stockholders; a
cash payment of $1.5 million; and the contingent right, subject to FTI's
achievement of certain financial objectives during calendar 1998, to receive up
to $5,590,000 of HNC common stock.

           On June 11, 1998, HNC acquired the ATACS product line. ATACS, a
subsidiary of Bedford Associates, Inc., which is a wholly owned subsidiary of
British Airways plc, is a fraud-management software solution for wireline,
wireless and Internet telecommunication service providers. HNC acquired the
ATACS product line for a cash payment of $4.75 million.

   
           On September 16, 1998, HNC announced that it had signed a definitive
agreement to acquire Open Solutions Inc. ("OSI"). OSI is a provider of
client/server core processing software and related professional services to
small to mid-size banks and credit unions. This transaction has not yet been
consummated and remains subject to the satisfaction of certain conditions,
including qualification of the transaction for "pooling of interests" accounting
treatment. Under the current terms of the pending transaction, the consideration
payable by HNC to acquire all of OSI's outstanding stock and stock options would
consist of approximately 2,956,618 shares of HNC's Common Stock and/or options.
The mix of shares and options is currently expected to be approximately
2,507,507 shares and 449,111 options.
    



                                      F-20
<PAGE>   156


                                HNC SOFTWARE INC.
                           CONSOLIDATED BALANCE SHEET
                      (in thousands, except per share data)
                                   (unaudited)

                                     ASSETS
   
<TABLE>
<CAPTION>
                                                                         SEPTEMBER 30,
                                                                             1998     
                                                                         -------------
<S>                                                                       <C>      
Current assets:
    Cash and cash equivalents .......................................        $  40,746
    Investments available for sale ..................................           48,725
    Accounts receivable, net ........................................           50,391
    Current portion of deferred income taxes ........................            8,873
    Other current assets ............................................            4,711
                                                                         -------------
        Total current assets ........................................          153,446
Property and equipment, net .........................................           14,597
Deferred income taxes, less current portion .........................           18,180
Long-term investments available for sale ............................           61,125
Other assets ........................................................           11,226
                                                                         -------------
                                                                             $ 258,574
                                                                         =============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

Current liabilities:
   Accounts payable .................................................        $   5,892
   Accrued liabilities ..............................................            9,567
   Deferred revenue .................................................            7,881
   Other current liabilities ........................................              104
                                                                          ------------
     Total current liabilities ......................................           23,444
Convertible Subordinated Notes ......................................          100,000
Other non-current liabilities .......................................               30

Minority interest in consolidated subsidiary ........................              157

Stockholders' equity:
Preferred stock, $0.001 par value -- 4,000 shares authorized:
     no shares issued or outstanding ................................               --
Common stock, $0.001 par value - 50,000 shares authorized:
     25,809 shares issued and outstanding ...........................               26
Paid-in capital .....................................................          131,502
Retained earnings ...................................................            3,438 
Accumulated other comprehensive income ..............................              (23)
                                                                          ------------
     Total stockholders' equity .....................................          134,943
                                                                          ------------
                                                                             $ 258,574
                                                                          ============
</TABLE>
    

          See accompanying notes to consolidated financial statements.


                                      F-21
<PAGE>   157


   
                                HNC SOFTWARE INC.
                      CONSOLIDATED STATEMENT OF OPERATIONS
                        AND COMPREHENSIVE INCOME (LOSS)
                      (in thousands, except per share data)
                                   (unaudited)
    

   
<TABLE>
<CAPTION>
                                                                                   NINE MONTHS ENDED    
                                                                                     SEPTEMBER 30,        
                                                                                ---------------------- 
                                                                                  1997          1998   
                                                                                --------      -------- 
<S>                                                                             <C>           <C>      
Revenues:                                                                                              
   License and maintenance ..................................................   $ 64,347      $ 97,480 
   Installation and implementation ..........................................      7,203        10,717 
   Contracts and other ......................................................      6,202        11,165 
   Service bureau ...........................................................      3,902         6,610 
                                                                                --------      -------- 
     Total revenues .........................................................     81,654       125,972 
                                                                                                       
                                                                                --------      -------- 
Operating expenses:                                                                                    
   License and maintenance ..................................................     13,987        22,168 
   Installation and implementation ..........................................      3,551         7,692 
   Contracts and other ......................................................      4,415         8,437 
   Service bureau ...........................................................      2,986         4,050 
   Research and development .................................................     15,376        23,466 
   Sales and marketing ......................................................     15,477        25,245 
   General and administrative ...............................................      8,369        10,847 
   In-process research and development ......................................         --        22,783 
   Acquisition related amortization .........................................         --           906
                                                                                --------      -------- 
     Total operating expenses ...............................................     64,161       125,594 
                                                                                --------      -------- 
Operating income ............................................................     17,493           378
Other income, net ...........................................................      1,511         4,912
Interest expense ............................................................        (63)       (3,205)
Minority interest in income of consolidated subsidiary ......................         --          (114)
                                                                                --------      -------- 
   Total other income, net ..................................................      1,448         1,593 
     Income before income tax provision .....................................     18,941         1,971
Income tax provision ........................................................      4,643         6,562 
                                                                                --------      -------- 
        Net income (loss) ...................................................   $ 14,298      $ (4,591)
                                                                                ========      ======== 
Other comprehensive income, net of tax:                                                                
   Foreign currency translation adjustments .................................        (14)          (19)
   Unrealized gains on securities available for sale ........................         60           109
                                                                                --------      -------- 
     Total other comprehensive income .......................................         46            90
                                                                                              -------- 
                                                                                              -------- 
Comprehensive income (loss)..................................................     14,344        (4,501)
                                                                                --------      -------- 
Earnings per share:                                                                                    
   Basic net income (loss) per common share .................................   $   0.59      $  (0.18)
                                                                                ========      ======== 
   Diluted net income (loss) per common share ...............................   $   0.56      $  (0.18)
                                                                                ========      ======== 
Shares used in computing basic net income (loss) per common share ...........     24,213        25,217 
                                                                                ========      ======== 
Shares used in computing diluted net income (loss) per common share .........     25,574        25,217 
                                                                                ========      ======== 
</TABLE>
    

See accompanying notes to consolidated financial statements.


                                      F-22
<PAGE>   158


                                HNC SOFTWARE INC.
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                 (in thousands)
                                   (unaudited)

   
<TABLE>
<CAPTION>
                                                                      NINE MONTHS ENDED SEPTEMBER 30,
                                                                      -------------------------------
                                                                         1997           1998
                                                                      ---------      ---------
<S>                                                                   <C>            <C>       
Cash flows from operating activities:
  Net income (loss) .............................................     $  14,298       $ (4,591)
  Adjustments to reconcile net income (loss) to net cash provided
     by operating activities:
     Depreciation and amortization ..............................         3,478          5,882  
   Purchased research and development .........................            --           22,783
     Tax benefit from stock option transactions .................         4,165          6,100
     Changes in assets and liabilities:
         Accounts receivable, net ...............................        (8,298)       (15,252)
         Other assets ...........................................          (927)        (1,753)
         Deferred income taxes ..................................         4,146          5,236
         Accounts payable .......................................         2,325           (273)
         Accrued liabilities ....................................        (1,956)        (3,840)
         Deferred revenue .......................................          (848)          (522)
         Other liabilities ......................................          (110)          (227)
                                                                      ---------      ---------
          Net cash provided by operating activities .............        16,273         13,543
                                                                      ---------      ---------

Cash flows from investing activities:
  Purchases of investments ......................................       (27,712)      (126,960)
  Maturities of investments .....................................        12,100         38,284
  Proceeds from sale of investments .............................         5,689          4,000
  Cash purchased in business acquisition ........................            --            649
  Acquisitions, net of cash acquired ............................            --         (6,250)
  Acquisitions of property and equipment ........................        (6,873)        (6,472)
                                                                      ---------      ---------
          Net cash used in investing activities .................       (16,796)       (96,749)
                                                                      ---------      ---------

Cash flows from financing activities:
  Net proceeds from issuances of common stock ...................         3,447          9,671
  Proceeds from issuances of Convertible Subordinated Notes .....            --        100,000
  Debt issuance costs ...........................................            --         (2,779)
  Repayment of bank line of credit ..............................            --           (770)
  Repayment of capital lease obligations ........................          (332)          (151)
  Distributions to CompReview Stockholders ......................        (5,798)            --
                                                                      ---------      ---------
          Net cash (used in) provided by financing activities ...        (2,683)       105,971
                                                                      ---------      ---------

Effect of exchange rate changes on cash .........................           (14)           (87)
                                                                      ---------      ---------
Net (decrease) increase in cash and cash equivalents ............        (3,220)        22,678
Cash and cash equivalents at the beginning of the period ........         8,121         18,068
                                                                      ---------      ---------

Cash and cash equivalents at the end of the period ..............     $   4,901      $  40,746
                                                                      =========      =========

Significant non-cash investing activities:
  Assets assumed in acquisitions of PCS, FTI, and ATACS .........     $      --      $   9,929
                                                                      =========      =========
  Liabilities assumed in acquisitions of PCS, FTI, and ATACS ....     $      --      $   7,297
                                                                      =========      =========
</TABLE>
    

          See accompanying notes to consolidated financial statements.



                                      F-23
<PAGE>   159
   
                                HNC SOFTWARE INC.
            CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
                                 (in thousands)
                                   (unaudited)
    

   
<TABLE>
<CAPTION>
                                                                           ACCUMULATED
                                                COMMON STOCK                  OTHER                       TOTAL
                                               --------------  PAID-IN    COMPREHENSIVE    RETAINED    STOCKHOLDERS' 
                                               SHARES  AMOUNT  CAPITAL     INCOME(LOSS)    EARNINGS       EQUITY    
                                               ------  ------  --------   -------------    --------    ------------ 
<S>                                            <C>     <C>     <C>        <C>              <C>         <C>          
BALANCE AT DECEMBER 31, 1997.................  24,538   $ 25   $ 95,919       $(113)        $ 8,029      $103,860   
Common stock options exercised...............     663      1      7,737                                     7,738
Common stock issued under Employee Stock
 Purchase Plan...............................      68             1,933                                     1,933
Tax benefit from stock option transactions...                     6,100                                     6,100
Common stock issued for acquisition of PCS...     143             5,088                                     5,088
Common stock issued for acquisition of FTI...     397            14,725                                    14,725
Unrealized gain on investments...............                                   109                           109   
Foreign currency translation adjustment......                                   (19)                          (19)  
Net loss.....................................                                                (4,591)       (4,591)  
                                               ------   ----   --------       -----         -------      --------   
BALANCE AT SEPTEMBER 30, 1998................  25,809   $ 26   $131,502       $ (23)        $ 3,438      $134,943   
                                               ======   ====   ========       =====         =======      ========   
</TABLE>
    

   
           See accompanying notes to consolidated financial statements
    


                                      F-24

<PAGE>   160

                                HNC SOFTWARE INC.
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

NOTE 1 -- GENERAL

   
           In management's opinion, the accompanying unaudited consolidated
financial statements for HNC Software Inc. ("HNC") for the nine months ended
September 30, 1997 and 1998 have been prepared in accordance with generally
accepted accounting principles for interim financial statements and include all
adjustments (consisting only of normal recurring accruals) that HNC considers
necessary for a fair presentation of its financial position, results of
operations, and cash flows for such periods. However, the accompanying financial
statements do not contain all of the information and footnotes required by
generally accepted accounting principles for complete financial statements. All
such financial statements are unaudited except the December 31, 1997 balance
sheet. The accompanying unaudited financial statements should be read in
conjunction with HNC's audited financial statements and notes thereto included
elsewhere herein. Footnotes that would substantially duplicate the disclosures
in HNC's audited financial statements for the fiscal year ended December 31,
1997 have been omitted. The interim financial information is not necessarily
indicative of the results to be expected for any other interim period or for the
full fiscal year ending December 31, 1998.
    

NOTE 2 -- BASIS OF PRESENTATION

           The consolidated financial statements and related notes give
retroactive effect to HNC's November 28, 1997 acquisition of CompReview, Inc.,
accounted for as a pooling of interests, for all periods presented. The
acquisitions of Practical Control Systems Technologies, Inc. ("PCS") and
Financial Technology, Inc. ("FTI") were completed on March 31, 1998 and April 7,
1998, respectively, and accounted for as purchases as of the respective
acquisition dates. In addition, the acquisition of the Advanced
Telecommunications Abuse Control System ("ATACS") product line of Bedford
Associates, Inc., which is a wholly owned subsidiary of British Airways plc, was
completed on June 11, 1998 and accounted for as a purchase as of that date. In
connection with these acquisitions, acquired in-process research and development
in the aggregate amount of $22.8 million was charged to operations at the
respective acquisition dates.

NOTE 3 -- ACQUISITIONS

   
           In March 1998, HNC acquired PCS, a company that develops, markets and
supports fully integrated distribution center management software products that
address the distribution needs of the retail, manufacturing and wholesale
industries. HNC acquired PCS in exchange for 142,868 shares of HNC common stock,
14,286 of which are subject to an escrow to secure certain indemnification
obligations of the former PCS stockholders plus the contingent right, subject to
PCS' achievement of certain financial objectives during calendar 1998 and 1999,
to receive certain additional shares of HNC common stock.

           In April 1998, HNC acquired FTI, a company that develops and markets
profitability measurement and decision-support software products to banks and
other similar financial institutions. HNC acquired FTI in exchange for the
issuance of 396,617 shares of HNC common stock, 97,390 of which are subject to
an escrow to secure certain indemnification obligations of the former FTI
stockholders; a cash payment of $1.5 million; and the contingent right, subject
to FTI's achievement of certain financial objectives during calendar 1998, to
receive additional shares of HNC common stock.

           In June 1998, HNC acquired the ATACS product line. ATACS is a
fraud-management software solution for wireline, wireless and Internet
telecommunication service providers. HNC acquired the ATACS product line for a
cash payment of $4.75 million.

NOTE 4 -- PENDING ACQUISITION

           On September 16, 1998, HNC announced that it had signed a definitive
agreement to acquire Open Solutions Inc. ("OSI"). OSI provides client/server
core processing software and related professional services to small to mid-size
banks and credit unions. This transaction has not yet been consummated and
remains subject to the satisfaction of certain conditions, including
qualification of the transaction for "pooling of interests" accounting
treatment. Under the current terms of the pending transaction, the consideration
payable by HNC to acquire all of OSI's outstanding stock and stock options would
consist of approximately 2,507,507 shares and 449,111 options.
    




                                      F-25
<PAGE>   161

                                HNC SOFTWARE INC.

       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) (CONTINUED)

   
NOTE 5 -- REVENUE RECOGNITION

           During the first quarter of 1998, HNC adopted Statement of Position
No. 97-2 ("SOP 97-2"), "Software Revenue Recognition," as amended by Statement
of Position No. 98-4 "Deferral of the Effective Date of a Provision of SOP 97-2,
Software Revenue Recognition". SOP 97-2 provides guidance for software revenue
recognition. The adoption of SOP 97-2 did not have a significant impact on HNC's
financial position or results of operations.

NOTE 6 -- COMPREHENSIVE INCOME

           During the first quarter of 1998, HNC adopted Statement of Financial
Accounting Standards No. 130 "Reporting Comprehensive Income" ("FAS 130"). FAS
130 requires HNC to report in the financial statements, in addition to net
income, comprehensive income and its components including foreign currency items
and unrealized gains and losses on certain investments in debt and equity
securities. Comprehensive income is defined as "the change in equity (net
assets) of a business enterprise during a period from transactions and other
events and circumstances from non-owner sources. It includes all changes in
equity during a period except those resulting from investments by owners and
distributions to owners."

NOTE 7 -- RECLASSIFICATIONS

           Certain prior period balances have been reclassified to conform to
the current period presentation.

NOTE 8 -- RECONCILIATION OF NET (LOSS) INCOME AND SHARES USED IN PER SHARE
COMPUTATIONS
    

   
<TABLE>
<CAPTION>
                                                NINE MONTHS ENDED
                                                  SEPTEMBER 30,
                                             ----------------------
                                                1998          1997
                                             --------      --------
<S>                                          <C>           <C>     
NET (LOSS) INCOME USED:
Net (loss) income used in computing
     basic and diluted net (loss) income
     per common share ..................     $ (4,591)     $ 14,298
                                             ========      ========
SHARES USED:
Shares used in computing basic net
     (loss) income per common share ....       25,217        24,213

Weighted average options to purchase
     common stock as determined by
     application of the treasury stock
     method ............................           --         1,359

Purchase Plan common stock
     equivalents .......................           --             2
                                             --------      --------

Shares used in computing diluted net
     (loss) income per common share ....       25,217        25,574
                                             ========      ========
</TABLE>
    

   
           For the nine month period ended September 30, 1998, common stock
equivalents of approximately 1,387,000 shares were not used to calculate diluted
net loss per share because of their anti-dilutive effect. The conversion of
HNC's 4.75% Convertible Subordinated Notes for the nine month period ended
September 30, 1998 of 1,700,000 shares was not used to calculate diluted net
loss per share as their effect would be anti-dilutive.
    


                                      F-26
<PAGE>   162
   
NOTE 9 -- NEW ACCOUNTING PRONOUNCEMENTS

           In June 1997, the FASB issued Statement of Financial Accounting
Standards No. 131 ("FAS 131"), "Disclosures about Segments of an Enterprise and
Related Information," which HNC is required to adopt for its 1998 annual
financial statements. This statement establishes standards for reporting
information about operating segments in the annual financial statements and
requires selected information about operating segments in interim financial
reports issued to stockholders. It also establishes standards for related
disclosures about products and services, geographic areas and major customers.
Under FAS 131, operating segments are to be determined consistent with the way
that management organizes and evaluates financial information internally for
making operating decisions and assessing performance. HNC has not determined the
impact of the adoption of this new accounting standard on its consolidated
financial statement disclosures.

           In June 1998, the Financial Accounting Standards Board issued
Statement of Accounting Standards No. 133 "Accounting for Derivative Instruments
and Hedging Activities" ("FAS 133") which HNC will be required to adopt during
the first quarter of 2000. This statement establishes a new model for accounting
for derivatives and hedging activities. Under FAS 133, all derivatives must be
recognized as assets and liabilities and measured at fair value. HNC has not
determined the impact of the adoption of this new accounting standard on its
consolidated financial position or results of operations.
    

   
NOTE 10  CONVERTIBLE SUBORDINATED NOTES

        In March 1998, HNC issued $100,000,000 of 4.75% Convertible Subordinated
Notes (the "Notes") due 2003. The Notes will be convertible into common stock at
any time prior to the close of business on the maturity date, unless previously
redeemed or repurchased, at a conversion price of $44.85 per share (equivalent
to a conversion rate of approximately 22.30 shares per $1,000 principal amount
of Notes), subject to adjustment.

NOTE 11  INVESTMENTS

        At September 30, 1998 and December 31, 1997, the amortized cost and
estimated fair value of investments available for sale were as follows (in
thousands):
    

   
<TABLE>
<CAPTION>
                                                                          SEPTEMBER 30, 1998
                                                      -------------------------------------------------
                                                      AMORTIZED    UNREALIZED    UNREALIZED     FAIR
                                                        COST         GAINS         LOSSES       VALUE
                                                      ---------    ----------    ----------    --------
        <S>                                           <C>          <C>           <C>           <C>
        U.S. government and federal agencies....      $ 75,686        $ 75           $--       $ 75,761
        U.S. corporate debt.....................        26,951          60            --         27,011
        Foreign corporate debt..................         7,043          35            --          7,078
                                                      --------        ----           ---       --------
                                                      $109,680        $170           $--       $109,850
                                                      ========        ====           ===       ========
</TABLE>
    

   
<TABLE>
<CAPTION>
                                                                           DECEMBER 31, 1997
                                                      -------------------------------------------------
                                                      AMORTIZED    UNREALIZED    UNREALIZED     FAIR
                                                        COST         GAINS         LOSSES       VALUE
                                                      ---------    ----------    ----------    --------
        <S>                                           <C>          <C>           <C>           <C>
        U.S. government and federal agencies....      $ 20,682         $--           $(1)      $ 20,681
        U.S. corporate debt.....................         1,894          --            (1)         1,893
        Foreign corporate debt..................         2,304          --            --          2,304
                                                      --------         ---           ---       --------
                                                      $ 24,880         $--           $(2)      $ 24,878
                                                      ========         ===           ===       ========
</TABLE>
    

   
        At September 30, 1998 and December 31, 1997, all foreign corporate debt
investments were denominated in U.S. dollars.

        The objectives of HNC's investment policy are the safety and
preservation of invested funds and liquidity of investments that is sufficient
to meet cash flow requirements. HNC's policy is to place its cash, cash
equivalents and investments available for sale with high credit quality
financial institutions and commercial companies and government agencies in order
to limit the amount of credit exposure. It is also HNC's policy to maintain
certain concentration limits, to invest only in certain "allowable securities"
as determined by HNC's management and to invest only in securities denominated
in U.S. dollars. HNC's investment portfolio shall not have an average portfolio
maturity of beyond one year and shall maintain certain liquidity positions.
Investments are prohibited in certain industries and speculative activities.

NOTE 12  IN PROCESS RESEARCH AND DEVELOPMENT

        In connection with the acquisitions of PCS, FTI and ATACS, acquired
in-
    


                                      F-27
<PAGE>   163
   
process research and development in the aggregate amount of $22.8 million was
charged to operations at the respective acquisition dates.

        Practical Control Solutions, Inc. PCS is a worldwide supplier of fully
integrated distribution center management software products that address the
distribution needs of the retail, wholesale and manufacturing industries. PCS'
products may be classified into two categories: Nautilus, an off-the-shelf
warehouse management software system designed with all the tools needed to
control the course of warehouse operations and Nautilus CBT, an operational
tutorial database which guides the user through Nautilus operations. Certain
products were complete in certain areas and under development in others. The
classification of the technology as complete or under development was made in
accordance with the guidelines of Statement of Financial Accounting Standards
No. 86 ("SFAS 86"), Statement of Financial Accounting Standards No. 2 ("SFAS 2")
and Financial Accounting Standards Board Interpretation No. 4 ("FIN4"). At the
time of acquisition, PCS had a number of new software products under development
including Nautilus Versions 6.0 and 7.0 and Nautilus CBT. Nautilus Version 6.0
and Nautilus CBT were both nearly complete but had not reached technological
feasibility as of the acquisition date.

        Financial Technologies, Inc. FTI has been a leading provider of
management accounting software for financial institutions since 1982. Since
1994, FTI has focused on profitability measurement and other decision support
systems. FTI's products are generally classified into six categories:
ProfitVision, MarketVision, RiskVision, DataVision, Decision Support Products
and Financial Platform Products. FTI had various new products under development
in each of these categories, none of which had reached technological feasibility
as of the acquisition date. The classification of each new technology as
complete or under development was made in accordance with the guidelines of SFAS
86, SFAS 2 and FIN4.
    


                                      F-28
<PAGE>   164
   
        Advanced Telecommunications Abuse Control System. ATACS is a fraud
management software solution for the wireline, wireless and Internet
telecommunication service provider industries. The system detects fraudulent
traffic thereby avoiding significant financial losses to traditional
telecommunication carriers and Internet Service Providers. ATACS' Version 4.2
includes significant enhanced features from its prior version, including new
enhancements to Velocity, Message Handlers and a subsystem to support fraud
detection of on-line transactions. ATACS Version 4.1 was completed and producing
revenues prior to the acquisition date while Version 4.2, which includes new
technology that allows the system to function on three interface platforms, was
under development and had not yet reached technological feasibility as of the
acquisition date. Although Version 4.2 has as its foundation technology from the
completed as well as in-process technology, HNC believes that it will have
changed significantly so as to be considered new research and development
efforts. The classification of each research and development project as complete
or under development was made in accordance with the guidelines of SFAS 86, SFAS
2 and FIN4.
    


                                      F-29
<PAGE>   165


                        REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders
of Open Solutions Inc.

     In our opinion, the accompanying balance sheet and the related statements
of operations, of cash flows and of changes in stockholders' equity (deficit)
present fairly, in all material respects, the financial position of Open
Solutions Inc. at December 31, 1997 and 1996, and the results of its operations,
its cash flows and changes in stockholders' equity (deficit) for each of the
three years in the period ended December 31, 1997, in conformity with generally
accepted accounting principles. These financial statements are the
responsibility of the Company's management; our responsibility is to express an
opinion on these financial statements based on our audits. We conducted our
audits of these statements in accordance with generally accepted auditing
standards which require that we plan and perform the audit to obtain reasonable
assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements, assessing the
accounting principles used and significant estimates made by management, and
evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for the opinion expressed above.




Price Waterhouse LLP


Hartford, Connecticut
April 6, 1998


                                      F-30
<PAGE>   166


                               OPEN SOLUTIONS INC.

                                  BALANCE SHEET

   
<TABLE>
<CAPTION>
                                                                                 DECEMBER 31,             SEPTEMBER 30, 1998
                                                                       --------------------------------   ------------------
                                                                             1996             1997           (UNAUDITED)
                                                                         -------------    -------------               
<S>                                                                       <C>             <C>                 <C>         
              ASSETS
              Current assets:
                 Cash and cash equivalents...........................     $ 4,437,657     $  7,596,183        $  5,603,276
                 Restricted cash (Note 2)............................          94,241          281,090                  --
                 Accounts receivable (Note 2)........................       1,448,573        1,505,940           2,289,782
                 Prepaid expenses and other (Note 2).................         135,210          232,807             505,059
                 Deferred project costs (Note 2).....................         458,675               --                  --
                                                                          -----------     ------------        ------------
                   Total current assets..............................       6,574,356        9,616,020           8,398,117
              Fixed assets, net (Notes 2 and 3)......................         767,390        1,153,090           1,757,769
              Software development costs, net (Note 2)...............         204,035          533,343             589,452
                                                                          -----------     ------------        ------------
                   Total assets......................................     $ 7,545,781     $ 11,302,453        $ 10,745,338
                                                                          ===========     ============        ============
              LIABILITIES, MANDATORILY REDEEMABLE                                         
                CONVERTIBLE PREFERRED STOCK
                AND STOCKHOLDERS' EQUITY (DEFICIT)
              Current liabilities:
                 Accounts payable....................................     $   227,887     $    104,249        $    997,288
                 Royalties payable (Note 13).........................          68,315          378,981                  --
                 Accrued expenses (Note 4)...........................         372,108        1,081,917           1,213,980
                 Note payable (Note 5)...............................              --          175,000                  --
                 Current portion of long-term debt (Note 6)..........              --           34,668                  --
                 Deferred revenue (Note 2)...........................       1,005,129        1,643,457           2,451,021
                                                                          -----------     ------------        ------------
                   Total current liabilities.........................       1,673,439        3,418,272           4,662,289
                                                                          -----------     ------------        ------------
              Accrued rent expense (Note 2)..........................          77,731          100,823             110,587
              Long-term debt, less current portion (Note 6)..........              --           57,778                  --
                                                                          -----------     ------------        ------------
                                                                               77,731          158,601             110,587
                                                                          -----------     ------------        ------------
              Total liabilities......................................       1,751,170        3,576,873           4,772,876
              Commitments and contingencies (Note 10)................
              Mandatorily redeemable convertible preferred
                stock and warrants (Note 7)..........................      10,573,480       15,551,214          16,139,549

              Stockholders' equity (deficit) (Note 8 and 9):
                 Preferred stock, $0.01 par value;
                   1,416,667, 1,416,667, and 1,416,667
                   shares authorized; 1,416,667, 1,416,667,
                   and 1,416,667 shares issued and outstanding.......          14,167           14,167              14,167
                 Common stock, $0.01 par value; 8,580,417,
                   9,830,417, and 19,055,417 shares authorized;
                   2,115,000, 2,165,325, and 2,236,013 shares
                   issued and outstanding............................          21,150           21,653              22,360
                 Additional paid-in capital..........................       2,674,465        2,682,569           4,311,842
                 Accumulated deficit.................................      (7,488,651)     (10,544,023)        (14,515,456)
                                                                          -----------     ------------        ------------
                   Total stockholders' equity (deficit)..............      (4,778,869)      (7,825,634)        (10,167,087)
                                                                          -----------     ------------        ------------
              Total liabilities, mandatorily redeemable
                 convertible preferred stock and
                 stockholders' equity (deficit)......................     $ 7,545,781     $ 11,302,453        $ 10,745,338
                                                                          ===========     ============        ============

</TABLE>
    


   The accompanying notes are an integral part of these financial statements.



                                      F-31
<PAGE>   167


                               OPEN SOLUTIONS INC.

                             STATEMENT OF OPERATIONS

   
<TABLE>
<CAPTION>
                                                                                                    NINE MONTHS ENDED
                                                          YEAR ENDED DECEMBER 31,                     SEPTEMBER 30,
                                             ---------------------------------------------      ---------------------------
                                                1995             1996              1997            1997             1998
                                             -----------      -----------      -----------      -----------      -----------
                                                                                                (unaudited)      (unaudited)
<S>                                          <C>              <C>              <C>              <C>              <C>        
Revenues (Note 2):
  License and maintenance ..............     $   219,620      $   879,138      $ 4,505,627      $ 2,044,832      $ 5,805,403
  Installation and implementation ......          48,521          140,255        1,959,037        1,159,156        3,196,330
 Hardware and other ....................              --               --          184,948          105,353          474,450
                                             -----------      -----------      -----------      -----------      -----------
     Total revenues ....................         268,141        1,019,393        6,649,612        3,309,341        9,476,183
Operating expenses:
  License and maintenance ..............         380,793        1,100,081        1,801,202        1,054,480        1,684,848
  Installation and implementation ......         319,213          937,541        2,416,511        1,648,587        2,678,934
  Hardware and other ...................              --               --           92,828           54,713          689,263
  Sales and marketing ..................         398,496        1,050,831        2,132,410        1,454,233        2,576,930
  Product development ..................         660,510        1,059,879        1,901,892        1,512,348        1,564,158
  General and administrative ...........         399,576          645,334        1,569,568        1,120,874        2,179,821
  Contract termination (Note 13)........              --               --               --               --        1,265,292
  Public offering costs (Note 15).......              --               --               --               --        1,055,535
                                             -----------      -----------      -----------      -----------      -----------
    Total operating expenses ...........       2,158,588        4,793,666        9,914,411        6,845,235       13,694,781
                                             -----------      -----------      -----------      -----------      -----------
Loss from operations ...................      (1,890,447)      (3,774,273)      (3,264,799)      (3,535,894)      (4,218,598)
       Interest income (expense), net ..          (4,506)         135,801          209,427          120,986          247,165
                                             -----------      -----------      -----------      -----------      -----------
Net loss ...............................     $(1,894,953)     $(3,638,472)     $(3,055,372)     $(3,414,908)     $(3,971,433)
                                             ===========      ===========      ===========      ===========      ===========
Net loss per common share (basic and
  diluted) .............................     $     (0.98)     $     (1.73)     $     (1.42)     $     (1.59)     $     (1.80)
Weighted average common shares used
  to compute net loss per share (Note 2)       1,935,644        2,102,568        2,155,333        2,152,069        2,206,751

</TABLE>
    


The accompanying notes are an integral part of these financial statements.



                                      F-32
<PAGE>   168


                               OPEN SOLUTIONS INC.

                             STATEMENT OF CASH FLOWS

   
<TABLE>
<CAPTION>
                                                                                                           NINE MONTHS ENDED
                                                                YEAR ENDED DECEMBER 31,                       SEPTEMBER 30,
                                                     ---------------------------------------------    ----------------------------
                                                        1995             1996             1997           1997              1998
                                                     -----------      -----------      -----------    -----------      -----------
                                                                                                      (UNAUDITED)       (UNAUDITED)
<S>                                                  <C>              <C>              <C>            <C>              <C>         
Cash flows from operating activities:
   Net loss .....................................    $(1,894,953)     $(3,638,472)     $(3,055,372)   $(3,414,908)     $(3,971,433)
   Adjustments to reconcile net loss to net
     cash used by operating activities:
     Depreciation and amortization ..............         53,865          147,790          352,326        207,620          440,663
     Compensation expense related to stock and
     options granted ............................             --           52,500           85,526         52,756          114,774
     Options granted to Banking Spectrum
     (Note 13) ..................................             --               --               --             --        1,608,750
     Changes in operating assets and
     liabilities:
     Restricted cash ............................             --          (94,241)        (186,849)      (329,333)         281,090
     Accounts receivable ........................       (146,240)      (1,302,333)         (57,367)    (1,046,286)        (783,842)
     Prepaid expenses and other .................        (17,054)        (110,005)         (97,597)      (230,188)        (272,252)
     Deferred project costs .....................             --         (458,675)         458,675        458,675               --
     Accounts payable and accrued expenses ......        264,158          371,774          500,645        498,954          910,328 
     Royalties payable ..........................             --           68,315          310,666        (68,315)        (378,981)
     Deferred revenue ...........................             --          968,254          638,328      1,583,976          807,564
     Accrued rent expense .......................             --           77,731           23,092         17,854            9,764
                                                     -----------      -----------      -----------    -----------      -----------
     Net cash used by operating activities ......     (1,740,224)      (3,917,362)      (1,027,927)    (2,269,195)      (1,233,575)
                                                     -----------      -----------      -----------    -----------      -----------
Cash flows from investing activities:
   Purchases of fixed assets ....................        (92,523)        (696,874)        (597,256)      (416,903)        (850,423)
   Capitalized software development costs .......       (119,514)        (153,209)        (215,078)      (301,077)        (251,028)
                                                     -----------      -----------      -----------    -----------      -----------
     Net cash used by investing activities ......       (212,037)        (850,083)        (812,334)      (717,980)      (1,101,451)
                                                     -----------      -----------      -----------    -----------      -----------
Cash flows from financing activities:
   Net proceeds from the sale of preferred
     stock ......................................      5,092,000        5,481,480        4,977,734      5,000,000               --
   Proceeds from exercise of stock options ......          1,500               --            8,607          8,033           21,230
   Proceeds from exercise of warrants ...........             --               --               --             --          588,335
   Proceeds from short-term debt ................      1,000,000               --               --             --               --
   Payments of short-term debt ..................     (1,000,000)        (250,000)         (80,000)            --         (209,668)
   Proceeds from long-term debt .................             --               --          104,002        276,113               --
   Payments of long-term debt ...................             --               --          (11,556)            --          (57,778)
   Proceeds from subscription note receivable ...        120,000           60,000               --             --               --
                                                     -----------      -----------      -----------    -----------      -----------
     Net cash provided by financing activities ..      5,213,500        5,291,480        4,998,787      5,284,146          342,119
                                                     -----------      -----------      -----------    -----------      -----------
   Net increase (decrease) in cash and cash
     equivalents ................................      3,261,239          524,035        3,158,526      2,296,971       (1,992,907)
   Cash and cash equivalents at beginning of
     period .....................................        652,383        3,913,622        4,437,657      4,437,657        7,596,183
                                                     -----------      -----------      -----------    -----------      -----------
   Cash and cash equivalents at end of period ...    $ 3,913,622      $ 4,437,657      $ 7,596,183    $ 6,734,628      $ 5,603,276
                                                     ===========      ===========      ===========    ===========      ===========
Supplemental disclosure:
     Cash paid for interest .....................    $    21,781      $     3,438      $     9,148    $     6,760      $     4,367
     Cash paid for income taxes .................          4,156           25,923           19,172         24,672           26,540

See discussion of non-cash transaction in Note 5.

</TABLE>
    


   The accompanying notes are an integral part of these financial statements.



                                      F-33
<PAGE>   169



                               OPEN SOLUTIONS INC.

             STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT)

   
<TABLE>
<CAPTION>
                                  PREFERRED STOCK      COMMON STOCK      ADDITIONAL                      TOTAL
                                ------------------  ------------------    PAID-IN     ACCUMULATED    STOCKHOLDERS'
                                 SHARES     AMOUNT   SHARES     AMOUNT    CAPITAL       DEFICIT     EQUITY (DEFICIT)
                                ---------  -------  ---------  -------  ------------  ------------  ----------------
<S>                             <C>        <C>      <C>        <C>      <C>           <C>           <C>
Balance -- December 31, 1994    1,416,667  $14,167  1,930,000  $19,300  $2,442,315  $ (1,955,226)     $   520,556
   Exercise of stock            
      options ................         --       --     10,000      100       1,400            --            1,500
   Proceeds from subscription   
      note receivable ........         --       --         --       --     120,000            --          120,000
   Net loss ..................         --       --         --       --          --    (1,894,953)      (1,894,953)
                                ---------  -------  ---------  -------  ----------  ------------     ------------
Balance -- December 31, 1995    1,416,667   14,167  1,940,000   19,400   2,563,715    (3,850,179)      (1,252,897)
   Issuance of common stock     
      (Note 8) ...............         --       --    175,000    1,750      50,750            --           52,500
   Proceeds from subscription   
      note receivable ........         --       --         --       --      60,000            --           60,000
   Net loss ..................         --       --         --       --          --    (3,638,472)      (3,638,472)
                                ---------  -------  ---------  -------  ----------  ------------     ------------
Balance -- December 31,1996 ..  1,416,667   14,167  2,115,000   21,150   2,674,465    (7,488,651)      (4,778,869)
   Exercise of stock            
      options ................         --       --     50,325      503       8,104            --            8,607
   Net loss ..................         --       --         --       --          --    (3,055,372)      (3,055,372)
                                ---------  -------  ---------  -------  ----------  ------------     ------------
Balance -- December 31,1997 ..  1,416,667   14,167  2,165,325   21,653   2,682,569   (10,544,023)      (7,825,634)
   Exercise of stock            
      options ................         --       --     70,688      707      20,523            --           21,230
   Issuance of stock options    
      (Note 13) ..............         --       --         --       --   1,608,750            --        1,608,750
   Net loss ..................         --       --         --       --          --    (3,971,433)      (3,971,433)
                                ---------  -------  ---------  -------  ----------  ------------     ------------
Balance -- September 30, 1998        
   (unaudited) ...............  1,416,667  $14,167  2,236,013  $22,360  $4,311,842  $(14,515,456)    $(10,167,087)
                                =========  =======  =========  =======  ==========  ============     ============

</TABLE>
    


The accompanying notes are an integral part of these financial statements.



                                      F-34
<PAGE>   170

                               OPEN SOLUTIONS INC.

                          NOTES TO FINANCIAL STATEMENTS

NOTE 1 -- OPEN SOLUTIONS INC.

     Open Solutions Inc. ("OSI") is a provider of client/server core processing
software and related professional services to small to mid-size banks and credit
unions. OSI was incorporated in Delaware in May 1992, and was formed to design
and develop enterprise wide banking software. OSI released its first major
product, The Complete Banking Solution, in the second quarter of 1995. OSI's
design and development efforts have principally been funded through the sale of
redeemable and non-redeemable equity securities as more fully described in Notes
7 and 8. OSI's current products operate in a Microsoft Windows NT environment
using an Oracle relational database.

NOTE 2 -- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Cash and Cash Equivalents

     Cash and cash equivalents include cash on deposit with banks, as well as
short-term investments with original maturities of 90 days or less.

Restricted Cash

     As of December 31, 1996 and 1997, certain cash amounts were restricted by a
customer in an escrow account. In February 1998, the restriction was removed.

Accounts Receivable

   
     Receivables are net of the allowance for doubtful accounts. As of December
31, 1996 and 1997 and September 30, 1998, the allowance for doubtful accounts
was approximately $86,000, $214,000 and $310,000 (unaudited), respectively.
    

Fixed Assets

     Fixed assets are stated at cost and are depreciated using the straight-line
method over the estimated useful lives of the assets, ranging from 5 and 7
years. Leasehold improvements are amortized over the shorter of the term of the
lease or the useful life of the asset.

Software Development Costs

   
     Software development costs for new software products and additional modules
for existing software are expensed as incurred until technological feasibility
is established, in accordance with Statement of Financial Accounting Standard
No. 86, "Accounting for the Costs of Computer Software to be Sold, Leased or
Otherwise Marketed." Technological feasibility is defined as the point in time
at which OSI has a product design and working model of the software product that
has been appropriately tested. Software development costs incurred subsequent to
the establishment of technological feasibility and prior to general release of
the product are capitalized and amortized based on the greater of the amount
computed using (a) the ratio that current gross revenues for a product bear to
the total of current and anticipated future gross revenues for that product or
(b) the straight-line method over the remaining estimated economic life of the
product, generally three years. Capitalized software development costs were
$153,209, $455,078 and $251,028 (unaudited) for years ended December 31, 1996,
1997 and for the nine months ended September 30, 1998, respectively. 
Amortization expense was $19,919, $48,769,
    


                                      F-35
<PAGE>   171


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

   
$125,770, $47,586 (unaudited) and $194,919 (unaudited) for the years ended
December 31, 1995, 1996, 1997 and the nine months ended September 30, 1997 and
1998, respectively. Accumulated amortization was $68,688, $194,458, and $389,377
(unaudited) as of December 31, 1996, 1997 and September 30, 1998, respectively.
    

Accrued Rent Expense

     Accrued rent expense results from the recognition of rent expense on a
straight-line basis relating to a seven year lease agreement with escalating
payments expiring April 2003.

Revenue Recognition

     OSI generates revenues from licensing the rights to use its software
products and certain third-party software products to end users. OSI also
generates revenues from customer support and maintenance, and from
implementation and training services provided to customers.

     Effective January 1, 1997 OSI early adopted AICPA Statement of Position
97-2, "Software Revenue Recognition" (SOP 97-2). Under SOP 97-2, OSI recognizes
software license revenue when a noncancelable license agreement has been
executed, fees are fixed and determinable, the software has been delivered,
accepted by the customer if acceptance is required by the contract and other
than perfunctory, and collection is considered probable. Beginning in December
1997, OSI revised its standard end user license agreements, eliminating certain
customer acceptance provisions. License revenue under the revised agreement will
be recognized upon software delivery, assuming all other revenue recognition
criteria are met. Prior to 1997, OSI recognized software license revenue in
accordance with AICPA Statement of Position 91-1, "Software Revenue Recognition"
(SOP 91-1). Under SOP 91-1, OSI recognized software license revenue when the
software was delivered, collectibility was probable and no other significant
post delivery obligations remained.

     Maintenance revenues are recognized ratably over the maintenance period,
generally one year. Revenues from implementation and training services are
recognized as services are performed. OSI enters into contracts which provide
both license and service elements. As such service elements are not essential to
functionality of the software, in accordance with SOP 97-2, the license fees are
generally recognized upon delivery and the service revenues are recognized when
performed.

     Deferred revenue is comprised of payments received in advance of product
delivery, maintenance and other services which have been paid by customers prior
to the services being performed. Deferred project costs are comprised of costs
associated with projects in process for which revenue has not yet been
recognized.

     OSI receives royalties from several software vendors for marketing
referrals. Royalty income is recognized at the time the software vendor receives
payment from its customer, and such income is included in service and
maintenance revenue.

     As described in Note 10, OSI anticipates receiving payments under certain
license and marketing agreements. OSI expects to recognize such license revenue
when the software has been delivered to the reseller's customer. When extended
payment terms exist, generally the software license fee will be recognized as
payments become due, unless a determination is made at the outset of the
arrangement that the fee is fixed and determinable.

Income Taxes

     OSI uses the liability method of accounting for income taxes, as set forth
in Statement of Financial Accounting Standards No. 109, "Accounting for Income
Taxes." Under this method, deferred tax assets and liabilities are recognized
for the expected future tax consequences of temporary differences between the
financial statement carrying amounts and the tax basis of the assets and
liabilities and the net operating loss carryforwards using presently enacted tax
rates.



                                      F-36
<PAGE>   172


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

Earnings Per Share

     In February 1997, the Financial Accounting Standards Board issued Statement
No. 128, "Earnings per Share" (EPS) (SFAS 128) which specifies the computation,
presentation and disclosure requirements for earnings per share of entities with
publicly held common stock or potential common stock. SFAS 128 is effective for
financial statements for both interim and annual periods ended after December
15, 1997. The statement defines two earnings per share calculations, basic and
diluted. Basic EPS is computed by dividing income available to common stock by
the weighted average number of common shares outstanding; diluted EPS is
computed by giving effect to all dilutive potential common shares that were
outstanding during the period. The calculation of diluted EPS is similar to
basic EPS except both the numerator and denominator are increased for the
conversion of potential common shares. Dilutive common share equivalents include
stock options, warrants, and convertible preferred stock.

   
     The 1995, 1996, 1997 and September 1997 and 1998 calculations of diluted
EPS do not include the exercise of stock options, conversion of preferred stock
or the exercise of warrants as the effect on diluted earnings per share would
have been antidilutive.
    

Concentration of Credit Risk

   
     Financial instruments which potentially expose OSI to concentrations of
credit risk are limited to accounts receivable. No individual customer accounted
for 10% or more of total revenues for the nine months ending September 30, 1998.
Sales to two banks accounted for approximately 17% and 15% of total revenues,
respectively, in the year ended December 31, 1997. Sales to four banks accounted
for approximately 38%, 22%, 20% and 14% of total revenues, respectively, in the
year ended December 31, 1996. Sales to two banks accounted for approximately 56%
and 43% of total revenues, respectively, in the year ended December 31, 1995.
OSI maintains reserves for potential credit risks and otherwise controls this
risk through credit approvals and monitoring procedures.
    

Stock Based Compensation

     OSI applies APB Opinion 25 and related interpretations in accounting for
its stock option plan. Under APB 25, compensation expense is recognized to the
extent that the fair market value of the underlying stock on the date of grant
exceeds the exercise price of the employee stock option. Additional disclosures
required under Financial Accounting Standards Board Statement No. 123
"Accounting for Stock-Based Compensation" (SFAS 123), are included in Note 9,
Stock Option Plan.

Use of Estimates

     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

New Accounting Pronouncements

     In June 1997, the Financial Accounting Standards Board issued Statement No.
130, "Reporting Comprehensive Income" (SFAS 130). SFAS 130 applies to all
companies and is effective for fiscal years beginning after December 15, 1997.
SFAS 130 establishes standards for the reporting and display of comprehensive
income in a set of financial statements. Comprehensive income is defined as the
change in net assets of a business enterprise during a period from transactions
generated from non-owner sources. It includes all changes in equity during a
period except those resulting from investment by owners and distributions to
owners. OSI has adopted SFAS 130 beginning January 1, 1998. For the years ended
December 31, 1995, 1996, and 1997 and for the nine months ended September 30, 
1998, comprehensive loss was the same as net loss.



                                      F-37
<PAGE>   173


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

     In June 1997, the Financial Accounting Standards Board issued Statement No.
131 "Disclosures about Segments of an Enterprise and Related Information" (SFAS
131). SFAS 131 applies to all public companies and is effective for fiscal years
beginning after December 15, 1997. SFAS 131 requires that business segment
financial information be reported in the financial statements utilizing the
management approach. The management approach is defined as the manner in which
management organizes the segments within the enterprise for making operating
decisions and assessing performance. OSI has adopted SFAS 131 beginning January
1, 1998. OSI's operations are currently managed all within one segment.

     Unaudited Interim Financial Statements

     The financial statements as of September 30, 1998 and for the nine months
ended September 30, 1997 and 1998 are unaudited and include all adjustments
(consisting of normal recurring adjustments) which are, in the opinion of
management, necessary for a fair presentation of the results for such interim
periods. The results of operations for the nine months ended September 30, 1998
are not necessarily indicative of the results to be expected for any future
period.

NOTE 3 -- FIXED ASSETS

<TABLE>
<CAPTION>
                                                                                 DECEMBER 31,          SEPTEMBER 30,
                                                                         ----------------------------  -------------
                                                                              1996           1997           1998
                                                                         -------------  -------------  -------------
                                                                                                         (UNAUDITED)
<S>                                                                      <C>            <C>            <C>        
               Computer equipment....................................     $   633,664   $  1,106,892   $  1,616,956
               Office furniture and equipment........................         112,262        198,200        429,203
               Leasehold improvements................................         186,855        239,945        349,301
                                                                          -----------   ------------   ------------
                                                                              932,781      1,545,037      2,395,460
               Less: accumulated depreciation........................        (165,391)      (391,947)      (637,691)
                                                                          -----------   ------------   ------------
                                                                          $   767,390   $  1,153,090   $  1,757,769
                                                                          ===========   ============   ============
</TABLE>

     Depreciation and amortization expense was $33,946, $99,021 and $226,556,
for the years ended December 31, 1995, 1996 and 1997, respectively, and $160,034
(unaudited) and $251,426 (unaudited) for the nine months ended September 30,
1997 and 1998, respectively.

NOTE 4 -- ACCRUED EXPENSES

<TABLE>
<CAPTION>
                                       DECEMBER 31,        SEPTEMBER 30,
                                  -----------------------  -------------
                                     1996         1997          1998
                                  ----------   ----------  -------------
                                                            (UNAUDITED)
<S>                               <C>          <C>          <C>       
Accrued compensation ...........  $  146,555   $  423,833   $  460,762
Accrued third party license fees      75,275      327,425      424,572
Accrued sales tax ..............     113,102      316,463       92,146
Accrued merger costs ...........          --           --      200,000
Other ..........................      37,176       14,196       36,500
                                  ----------   ----------   ----------
                                  $  372,108   $1,081,917   $1,213,980
                                  ==========   ==========   ==========
</TABLE>

NOTE 5 -- NOTE PAYABLE

     In August 1997, OSI entered into an agreement with another software company
for the purchase of certain assets, properties and rights relating to an ATM
software product in exchange for a $255,000 note. The amount due to the vendor
was paid down based on per copy fees of the purchased software products and the
remaining balance was paid in full on June 30, 1998. At December 31, 1997 and
September 30, 1998, the balance due to the software company was $175,000 and $0
(unaudited), respectively.



                                      F-38
<PAGE>   174


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

NOTE 6 -- LINES OF CREDIT

   
     In September 1996, OSI entered into a $250,000 equipment line of credit
with a bank. The equipment line allowed for draw downs through September 1997
with the outstanding borrowings on the equipment line converting to a $104,002,
nine percent term loan payable in 36 months beginning October 1997. Borrowings
are secured by a first security interest in the related equipment. At December
31, 1997 and September 30, 1998 the term loan balance was $92,446 and $0
(unaudited), respectively.

     In June 1997, OSI entered into a $1,000,000 working capital line of credit
with the same bank. At December 31, 1997 and September 30, 1998, there was no
balance outstanding under this line of credit. The line of credit was secured
with a first security interest in all assets, exclusive of those financed under
the equipment line, and expired on July 20, 1998. The line of credit was
available up to 75% of domestic accounts receivable less than 90 days
outstanding. Interest was payable monthly at the bank's prime plus 50 basis
points.

     In conjunction with these credit agreements, OSI must maintain certain
liquidity, tangible capital base and quick ratio financial covenants. OSI was in
compliance with its financial covenants at December 31, 1997. Payment of
dividends is prohibited under the lines of credit.
    

NOTE 7 -- MANDATORILY REDEEMABLE CONVERTIBLE PREFERRED STOCK

   
     In May 1995, OSI issued to Connecticut Innovations, Incorporated ("CII")
166,667 shares of Series A-2 Preferred Stock at $3.00 per share for $500,000. As
a requirement of the funding, OSI must maintain its principal place of business
and conduct the majority of its operations in Connecticut. If OSI fails to
maintain its Connecticut presence, CII may require OSI to purchase CII's shares
at the greater of the original purchase price plus a 40% annual compounded rate
of return or the fair market value of the shares. In addition, CII may require
OSI to purchase its shares if OSI is a private company and is acquired by a
third party or if OSI disposes of substantially all of its assets to a third
party. The price of redemption will be the greater of the original purchase
price of the shares plus a 25% annually compounded rate of return or the fair
market value of the shares. On September 16, 1998, OSI entered into a merger
agreement with HNC Software Inc. ("HNC"). Management does not believe CII will
put their securities to OSI. Rather, OSI believes that CII will have their
shares exchanged into HNC common stock as provided in the Merger Agreement.
Based on the above, OSI has not accrued for the put feature accretion.
    

     In December 1995, OSI issued to a group of investors 1,543,334 shares of
Series B Preferred Stock at $3.00 per share for $4,630,000. In conjunction with
the sale, OSI issued 192,916 warrants to purchase additional shares of Series B
Preferred Stock at $4.00 per share of which 84,583 warrants were exercised in
March 1998. The Series B Preferred Stock has similar mandatory redemption
features as the May 1995 Series A-2.

     In October 1996, OSI issued to a group of investors 1,222,222 shares of
Series C Preferred Stock at $4.50 per share for $5,500,000. In conjunction with
the sale, OSI issued 152,778 warrants to purchase additional shares of Series C
Preferred Stock at $6.00 per share of which 41,667 warrants were exercised in
March 1998. The Series C Preferred Stock has similar mandatory redemption
features as the May 1995 Series A-2 and Series B.

   
     In August 1997, OSI issued to an investor 833,333 shares of Series D
Preferred Stock at $6.00 per share for $5,000,000. In conjunction with the sale,
OSI issued 416,667 warrants to purchase additional shares of Series D Preferred
Stock at $6.00 per share. The Series D Preferred Stock has similar mandatory
redemption features as the May 1995 Series A-2, Series B and Series C.
Concurrent with the preferred stock offering, the investor in the Series D
Preferred Stock offering also entered into a marketing and distribution
agreement with OSI. For the nine months ended September 30, 1998, there were
revenues of $181,013 recognized under this agreement.
    

     The holders of preferred stock are entitled to receive noncumulative cash
dividends when and as declared by the Board of Directors and have similar voting
rights as common stockholders in addition to certain other defined voting
rights. In the event of any voluntary or involuntary liquidation of OSI, the
holders of Series A-1, Series A-2, Series B, Series C and



                                      F-39
<PAGE>   175


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

Series D Preferred Stock shall be entitled to all unpaid dividends at the time
of liquidation and $1.50, $3.00, $3.00 or $4.50 and $6.00, respectively, per
share as a liquidating distribution prior to any liquidating distribution to the
common stockholders. At the option of the preferred stockholders, their shares
may be converted to common stock at the rate of one common stock share for one
share of preferred stock. The preferred stock shall automatically convert into
shares of common stock upon the closing of a firm commitment underwritten public
offering (i) with an aggregate offering price of at least $10,000,000, (ii) with
an offering price per share, with respect to the shares of Series A-1, Series
A-2 and Series B Preferred Stock, of $6.00 and, with respect to the shares of
Series C and Series D Preferred Stock, of $7.50, (iii) where the common stock is
listed for trading on the Nasdaq National Market System and (iv) with the
consent of the holders of at least two-thirds of the outstanding shares of
Series B and Series C Preferred Stock.

   
     The mandatory redemption features terminate upon the closing of a public
offering and the expiration of any related lock-up agreements, with the
exception of the Series A-2 Preferred Stock held by CII and the Series B
Preferred Stock. The rights of CII and of the holders of Series B Preferred
Stock to require OSI to purchase their shares of Series A-2 Preferred Stock and
Series B Preferred Stock, respectively, in the event OSI fails to maintain its
Connecticut presence do not terminate. The right of CII to require OSI to
purchase its shares of Series A-2 Preferred Stock in the event of a change of
control terminates upon the closing of a public offering.
    

NOTE 8 -- STOCKHOLDERS' EQUITY

Capital Stock Transactions

     In December 1995, in conjunction with the issuance of the Series B
Preferred Stock, OSI revised its certificate of incorporation to authorize
11,000,000 shares, of which 7,680,417 were common stock and 3,319,583 were
preferred stock. In October 1996, in conjunction with the issuance of the Series
C Preferred Stock, OSI revised its certificate of incorporation to authorize
13,275,000 shares of which 8,580,417 were common stock and 4,694,583 were
preferred stock. In August 1997, in conjunction with the issuance of the Series
D Preferred Stock, OSI revised its certificate of incorporation to authorize
15,775,000 shares, of which 9,830,417 were common stock and 5,944,583 were
preferred stock. In February 1998, OSI revised its certificate of incorporation
to approve an increase in authorized shares from 15,775,000 to 25,000,000.

     In January 1996, OSI issued 175,000 shares of common stock to the Chief
Executive Officer, resulting in compensation expense of $52,500.

     OSI has reserved shares of common stock as follows:

   
<TABLE>
<CAPTION>
                                               DECEMBER 31,   SEPTEMBER 30,
                                                   1997           1998
                                                ---------      ---------
                                                               (UNAUDITED)
<S>                                             <C>            <C>
Conversion of preferred stock ................  5,182,222      5,308,472
Conversion of preferred stock upon exercise of
    warrants .................................    762,361        636,111
Exercise of options ..........................  1,610,000      3,000,000
                                                ---------      ---------
                                                7,554,583      8,944,583
                                                =========      =========
</TABLE>
    

Preferred Stock

     In February 1994, OSI issued 1,000,000 shares of preferred stock designated
as Series A-1 Preferred Stock at $1.50 per share. In conjunction with the
issuance of the Series A-1 Preferred Stock, OSI issued a warrant to purchase
333,333 shares of Series A-2 Preferred Stock with an exercise price of $3.00 per
share. The warrant was subsequently converted to 333,333 shares of Series A-2
Preferred Stock in September 1994 for $999,999.


                                      F-40
<PAGE>   176


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

     In September 1994, OSI issued an additional 83,333 shares of preferred
stock designated as Series A-2 Preferred Stock at $3.00 per share. OSI received
$50,000 in cash and a note for $200,000 payable in monthly installments of
$10,000 plus interest, of which $60,000 and $0 was outstanding at December 31,
1995 and 1996, respectively. The shares were pledged as collateral against the
note.

     At the option of the preferred stockholders, their shares may be converted
to common stock at the rate of one common stock share for one share of preferred
stock. The preferred stock shall automatically convert into shares of common
stock upon the closing of a public offering meeting certain criteria.

NOTE 9 -- STOCK OPTION PLAN

     OSI has established the 1994 Stock Option Plan (the "1994 Plan") for
employees, officers, directors, and consultants or advisors to OSI under which
the Board of Directors may grant incentive stock options and non-qualified stock
options. Incentive stock options will be granted at the fair value of the Common
Stock at the time of grant, as determined by the Board of Directors. Generally,
incentive stock options vest 25% on the first anniversary of the date of grant
and then ratably on a monthly basis over the subsequent three years. In certain
circumstances, at the discretion of the Board of Directors, options are granted
with a vesting schedule of other than four years. Non-qualified stock options
have a vesting period as determined by the Board of Directors generally vesting
25% on the first anniversary of the date of grant and then ratably on a monthly
basis over the subsequent three years. The stock options are exercisable over a
period of ten years from the date of grant.

     In May 1997, the shareholders approved an increase in the maximum number of
shares that may be issued under the 1994 Plan from 1,110,000 to 1,610,000. In
February 1998, the shareholders approved an increase in the maximum number of
shares that may be issued under the 1994 Plan from 1,610,000 to 3,000,000.

     A summary of stock option activity under the 1994 Plan is as follows:

<TABLE>
<CAPTION>
                                                             WEIGHTED
                                                             AVERAGE
                                              NUMBER OF      EXERCISE
                                              SHARES         PRICE
                                              ---------      --------
<S>                                           <C>          <C>  
Outstanding at December 31, 1995 .......        595,500      $0.20
   Granted .............................        386,500       0.30
                                              ---------            
Outstanding at December 31, 1996 .......        982,000       0.24
   Granted .............................        482,250       1.23
   Canceled ............................        (47,675)      0.24
   Exercised ...........................        (50,325)      0.17
                                              ---------            
Outstanding at December 31, 1997 .......      1,366,250       0.59
   Granted .............................        404,500       1.32
   Canceled ............................        (10,562)      2.11
   Exercised ...........................        (70,688)      0.30
                                              ---------            
Outstanding at September 30, 1998
  (unaudited) ..........................      1,689,500       0.77
                                              =========       ====
</TABLE>

   
     Stock options outstanding at September 30, 1998 include 275,000 stock
options granted to affiliates of Banking Spectrum Services, Inc., a shareholder
of OSI, in March 1998. OSI recorded contract termination expense in connection
with these stock options, as described in Note 13, Related Parties.
    


                                      F-41
<PAGE>   177


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

   
     The following table summarizes information regarding stock options granted
during 1995, 1996 and 1997, and the nine months ended September 30, 1998 
(unaudited):
    

<TABLE>
<CAPTION>
                                                                                                                       WEIGHTED
                                                                                                                       AVERAGE
                                                                                                                       SFAS123
                                                                                                          WEIGHTED      MINIMUM
                                                                                            NUMBER OF      AVERAGE     VALUE AT
                                                                                             OPTIONS      EXERCISE      GRANT
                                                                                             GRANTED       PRICE         DATE
                                                                                            ---------    ---------    ---------
<S>                                                                                         <C>          <C>          <C>  
       1995:
       Options granted with an exercise price equal to market value.................         245,500       $0.28        $0.09
       1996:
       Options granted with an exercise price equal to market value.................         386,500        0.30         0.10
       1997:
       Options granted with an exercise price equal to market value.................           8,500        0.36         0.12
       Options granted with an exercise price less than market value................         473,750        1.25         1.10
       1998:
       Options granted with an exercise price less than market value................         404,500        1.32         5.60
</TABLE>

     The weighted average SFAS 123 minimum value at grant date is the amount
attributable to the option that is calculated without considering the expected
volatility of the underlying stock.

   
     The following table summarizes additional information about stock options
outstanding at September 30, 1998 (unaudited):
    

   
<TABLE>
<CAPTION>                                                                          
                                        OPTIONS OUTSTANDING
               -------------------------------------------------------------------           OPTIONS EXERCISABLE
                     NUMBER                   WEIGHTED-                              -----------------------------------
                 OUTSTANDING AT               AVERAGE                 WEIGHTED             NUMBER           WEIGHTED
    EXERCISE      SEPTEMBER 30,              REMAINING                 AVERAGE         EXERCISABLE AT       AVERAGE
      PRICE           1998           CONTRACTUAL LIFE IN YEARS     EXERCISE PRICE    SEPTEMBER 30, 1998  EXERCISE PRICE
  -----------  ------------------  ----------------------------  ------------------  ------------------ ----------------
<S>            <C>                 <C>                           <C>                 <C>                <C>  
  $0.15                296,000                  5.7                  $0.15                   296,000          $0.15
   0.15                 20,000                  6.3                   0.15                    18,333           0.15
   0.30                133,000                  6.8                   0.30                   109,634           0.30
   0.30                368,000                  7.7                   0.30                   206,802           0.30
   0.45                311,000                  8.5                   0.45                   184,625           0.45
   0.45                275,000                  9.4                   0.45                   275,000           0.45
   2.75                157,500                  9.1                   2.75                       750           2.75
   2.75                  8,500                  9.4                   2.75                        --             --
   2.75                100,000                  9.5                   2.75                        --             --
   4.50                  9,000                  9.5                   4.50                        --             --
   6.00                 11,500                  9.7                   6.00                        --             --
                  ------------                                                          ------------
                     1,689,500                                                             1,091,144
                  ============                                                          ============
</TABLE>
    


     Had compensation expense been recognized based on the minimum value of the
employee options at their grant dates, as prescribed in SFAS 123, OSI's pro
forma net loss would have been as follows:

   
<TABLE>
<CAPTION>
                                                                                                             
                                                                                                              NINE MONTHS
                                                                     YEAR ENDED DECEMBER 31,                     ENDED
                                                      ---------------------------------------------------     SEPTEMBER 30,
                                                           1995                1996             1997              1998
                                                      --------------     -------------      -------------     -------------
                                                                                                                (UNAUDITED)
<S>                                                   <C>                <C>                <C>               <C>          
Net loss:
   As reported ..................................      $1,894,953         $3,638,472         $3,055,372        $3,971,433
   Pro forma ....................................       1,896,688          3,646,337          3,131,847         4,142,894
Pro forma net loss per share (basic and diluted):
   As reported ..................................      $    (0.98)        $    (1.73)        $    (1.42)       $    (1.80)
   Pro forma ....................................           (0.98)             (1.73)             (1.45)            (1.88)

</TABLE>
    



                                      F-42
<PAGE>   178

                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

     The minimum value of each option grant is estimated on the date of grant
using the Black-Scholes option pricing model with the following assumptions used
for options granted during the applicable period: .

   
<TABLE>
<CAPTION>
                                                                                       SEPTEMBER 30,
                                             1995           1996            1997           1998
                                          ----------     ----------     -----------     -----------
                                                                                        (UNAUDITED)
<S>                                       <C>            <C>            <C>             <C>  
Risk free interest rate................     7.24%          6.72%        5.65%-6.66%     5.32%-5.46%
Expected dividend yield................      None          None            None            None
Expected life of option................    6 years        6 years         6 years         6 years
Expected volatility....................       0%            0%              0%              0%
</TABLE>
    

     The minimum value method requires the input of subjective assumptions.
Changes in the subjective input assumptions can materially affect the minimum
value estimate.

   
     Compensation of $358,513 and $419,325 (unaudited) has been attributed to
those common stock options granted to employees during 1997 and the nine months
ended September 30, 1998, respectively, with an exercise price below estimated
fair value. Compensation expense is recognized over the four year vesting period
and totaled $85,526, $66,496 (unaudited) and $114,774 (unaudited) for the year
ended December 31, 1997 and the nine months ended September 30, 1997 and 1998,
respectively.
    

NOTE 10 -- COMMITMENTS AND CONTINGENCIES

   
     At September 30, 1998, OSI was committed under facility and various other
operating leases with an initial term of more than one year which expire at
various dates through 2003. Terms of the facility lease provide for escalating
rent payments in future years. Minimum lease payments under these noncancelable
leases are approximately as follows:
    

   
<TABLE>
<CAPTION>
                                                                            AS OF            AS OF
                                                                        SEPTEMBER 30,    DECEMBER 31,
                                                                            1998             1997
                                                                        ------------     ------------
                                                                        (UNAUDITED)
<S>                                                                     <C>              <C>        
 January 1-- September 30, 1998.....................................      $      --       $    82,000
 October 1-- December 31, 1998......................................         82,000            86,000
 1999...............................................................        319,000           182,000
 2000...............................................................        301,000           191,000
 2001...............................................................        268,000           211,000
 2002...............................................................        230,000           219,000
 Thereafter.........................................................         44,000            72,000
                                                                         ----------      ------------
       Total minimum  obligations...................................     $1,244,000       $ 1,043,000
                                                                         ==========      ============
</TABLE>
    

   
     Rent expense under operating leases was approximately $36,000, $149,000 and
$194,000 for the years ended December 31, 1995, 1996 and 1997 and $150,000
(unaudited) and $230,000 (unaudited) for the nine months ended September 30, 
1997 and 1998, respectively.
    

     OSI has license and marketing agreements which provide certain
geographically exclusive rights to use OSI's software product for the
outsourcing of core processing services to banks and credits unions. The
agreements provide defined geographic exclusivity as long as minimum revenue
targets are met.

     From time to time in the ordinary course of business, OSI is subject to
legal proceedings. While it is impossible to determine the ultimate outcome of
such matters, it is management's opinion that the resolution of any pending
issues will not have a material adverse effect on the financial position,
results of operations or cash flows of OSI.

NOTE 11 -- DISCLOSURE ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS

     The carrying amount of cash, trade accounts receivable, other current
assets, trade accounts payable, royalties payable, accrued expenses, notes
payable and outstanding lines of credit approximate fair value because of the
short maturity of those instruments.

   
                                      F-43
    
<PAGE>   179

                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)
NOTE 12 -- INCOME TAXES

   
     Significant components of OSI's deferred tax asset at December 31, 1996 and
1997, and September 30, 1998 are as follows:
    

   
<TABLE>
<CAPTION>
                                              DECEMBER 31,            SEPTEMBER 30,
                                     ----------------------------     ------------
                                        1996              1997            1998
                                     -----------      -----------      -----------
                                                                       (UNAUDITED)
<S>                                  <C>              <C>              <C>        
Gross deferred tax assets:
   Net operating loss
      carryforwards ............     $ 2,853,000      $ 3,967,000      $ 4,816,000
   Research & development credit
      carryforwards ............         130,000          332,000          470,000
   Stock option expense ........              --               --          643,000
   Other .......................          32,000          126,000          168,000
                                     -----------      -----------      -----------
                                       3,015,000        4,425,000        6,097,000
                                     -----------      -----------      -----------
Gross deferred tax liability:
   Capitalized software
      development costs ........          84,000          221,000          174,000
   Accelerated depreciation ....          14,000           71,000           92,000
                                     -----------      -----------      -----------
                                          98,000          292,000          266,000
                                     -----------      -----------      -----------
Valuation allowance ............      (2,917,000)      (4,133,000)      (5,831,000)
                                     -----------      -----------      -----------
     Net deferred tax asset ....     $        --      $        --      $        --
                                     ===========      ===========      ===========
</TABLE>
    

   
     OSI has provided a valuation allowance for the full amount of the net
deferred tax asset as of December 31, 1996 and 1997 and September 30, 1998 since
management has not determined realization of these future benefits to be more
likely than not. If OSI achieves profitability, the deferred tax asset would be
available, subject to certain annual limitations, to offset future income taxes.
    

   
     At September 30, 1998, OSI had approximately $11.9 million (unaudited) of
federal net operating loss carryforwards that begin expiring in 2007 and had
approximately $12.6 million (unaudited) of state net operating loss
carryforwards that begin expiring in 1998. At September 30, 1998, OSI had
approximately $470,000 (unaudited) of research and development credit
carryforwards that begin expiring in 2007.
    

     As defined in the Internal Revenue Code, certain ownership changes limit
the annual utilization of federal net operating loss and tax credit
carryforwards. OSI experienced such an ownership change in December 1995 which
limits approximately $3.2 million of federal net operating loss carryforwards
and $149,000 of research tax credits to a $307,000 annual Section 382
limitation.

NOTE 13 -- RELATED PARTIES

Banking Spectrum

   
     In January 1994, OSI entered into an agreement with Banking Spectrum
Services, Inc., a shareholder of OSI, and Banking Spectrum, Inc. (collectively,
"Banking Spectrum"), to provide and receive certain consulting and support
services. The majority shareholder of Banking Spectrum Services, Inc. is a
director and shareholder of OSI. Pursuant to the agreement, OSI agreed to pay
Banking Spectrum a royalty based on the licensing of software products and
related services, ranging from three percent to 17% of net revenues, based on
Banking Spectrum's involvement in the sale of such products and services. OSI
recognized royalty expense of $9,021, $72,064, $337,945, $147,929 (unaudited) 
and $90,403 (unaudited) for the years ended December 31, 1995, 1996, 1997 and 
for the nine months ended September 30, 1997 and 1998, respectively.
    

    In March 1998, OSI and Banking Spectrum terminated their previous agreement
and entered into a distribution and termination agreement. The new agreement
released OSI from any future royalty payments to Banking Spectrum in exchange
for cash payment of $100,000 to Banking Spectrum and fully vested options to
affiliates of Banking Spectrum Services, Inc. to purchase 275,000 shares of
Common Stock at an exercise price of $0.45 per share. The distribution and
termination agreement expires upon delivery to OSI's customers of a limited
number of modules licensed from Banking


                                      F-44
<PAGE>   180


                               OPEN SOLUTIONS INC.

                    NOTES TO FINANCIAL STATEMENTS (CONTINUED)

   
Spectrum. As of March 31, 1998, there was no remaining future value attributable
to the termination charge because the maximum number of Banking Spectrum
licenses had been sold, there were no other future services to be provided by
Banking Spectrum under the agreement and there is no embedded Banking Spectrum
technology in OSI's existing products. The stock options were estimated by
management to have a fair value of approximately $1.6 million (unaudited). Net
of amounts previously accrued, OSI recorded a contract termination expense of
approximately $1.3 million (unaudited) for the nine months ended September 30, 
1998.
    

PRISM

     During 1994, OSI borrowed $250,000 from Prince-Roth Information Systems
Management Inc. ("PRISM"), a related party. Spouses of the shareholders of PRISM
are shareholders of OSI. The note was paid in full during 1996 including
interest due. Interest expense was $0 and $3,000 for the years ended December
31, 1995 and 1996, respectively.

NOTE 14 -- 401(k) PLAN

   
     In 1994 OSI established a voluntary 401(k) plan in which all full time
employees are eligible to participate. Since July 1996 OSI has provided matching
contributions of $30.00 per year plus 25% of the first four percent of the
employee's compensation which is deferred under the plan. Eligible employees who
elect to participate in the 401(k) plan are generally vested in OSI's matching
contributions after three years of service. OSI contributions for the years
ended December 31, 1995, 1996 and 1997 and for the nine months ended 
September 30, 1998, were $0, $9,926, $27,773, and $37,235 (unaudited), 
respectively.

NOTE 15 -- SUBSEQUENT EVENTS (UNAUDITED)

     On September 16, 1998, OSI entered into a merger agreement with HNC whereby
all the outstanding OSI Common Stock and OSI Preferred Stock will be exchanged
for HNC Common Stock. The Merger is expected to be completed by December 31,
1998. OSI accrued and deferred $200,000 in merger costs as of September 30,
1998. As a result, previously deferred initial public offering costs of
approximately $1.1 million were written off in the three-month period ended
September 30, 1998.
    



                                      F-45
<PAGE>   181

                                                                      APPENDIX A


     THIS AGREEMENT AND PLAN OF REORGANIZATION (this "AGREEMENT") is made and
entered into as of September 16, 1998 (the "AGREEMENT DATE") by and among HNC
SOFTWARE INC., a Delaware corporation ("HNC"), OAHU TRANSACTION CORP., a
Delaware corporation that is a wholly-owned subsidiary of HNC ("SUB"), and OPEN
SOLUTIONS INC., a Delaware corporation ("OSI").

                                    RECITALS

     A.   The parties intend that, subject to the terms and conditions of this
Agreement, Sub will be merged with and into OSI in a reverse triangular merger,
with OSI to be the surviving corporation of such merger, all pursuant to the
terms and conditions of this Agreement and applicable law. The parties also
intend for such merger to qualify as a "pooling of interests" transaction for
accounting and financial reporting purposes and to be treated as a
"reorganization" under Section 368(a) of the Internal Revenue Code of 1986, as
amended (the "CODE").

     B.   Upon the effectiveness of such merger, (i) the common stock and
preferred stock of OSI that is outstanding immediately prior to the
effectiveness of the merger will be converted into shares of the common stock of
HNC, (ii) the employee stock options to purchase shares of OSI's common stock
granted under the OSI Option Plans (as defined in Article I below) that are
outstanding immediately prior to the effectiveness of the Merger will be assumed
by HNC and converted into options to purchase shares of HNC common stock and
(iii) Sub will be merged with and into OSI, all as provided in this Agreement.

     NOW, THEREFORE, in consideration of the above-recited facts and the mutual
promises, covenants and conditions contained herein, the parties hereby agree as
follows:

                                    ARTICLE 1

                               CERTAIN DEFINITIONS

     As used in this Agreement, the following terms will have the meanings set 
forth below:

     1.1  The "MERGER" means the statutory merger of Sub with and into OSI to be
effected pursuant to the terms and conditions of this Agreement.

     1.2  The "EFFECTIVE TIME" means the time and date on which the Merger first
becomes legally effective under the law of the State of Delaware as a result of
the filing with the Delaware Secretary of State of a Certificate of Merger
regarding the Merger, conforming to the requirements of Section 251 of the
Delaware General Corporation Law (the "CERTIFICATE OF MERGER").

     1.3  "OSI COMMON STOCK" means OSI's Common Stock, $0.01 par value per
share.

     1.4  "OSI PREFERRED STOCK" means OSI's Preferred Stock, $0.01 par value per
share, of any series, including but not limited to the OSI Series A-1 Stock, OSI
Series A-2 Stock, OSI Series B Stock, OSI Series C Stock and OSI Series D Stock.

     1.5  "OSI SERIES A-1 STOCK" means OSI's Series A-1 Preferred Stock, $0.01
par value per share.

     1.6  "OSI SERIES A-2 STOCK" means OSI's Series A-2 Preferred Stock, $0.01
par value per share.

     1.7  "OSI SERIES B STOCK" means OSI's Series B Preferred Stock, $0.01 par
value per share.

     1.8  "OSI SERIES C STOCK" means OSI's Series C Preferred Stock, $0.01 par
value per share.

     1.9  "OSI SERIES D STOCK" means OSI's Series D Preferred Stock, $0.01 par
value per share.


<PAGE>   182

     1.10 "OSI OPTIONS" means options to purchase shares of OSI Common Stock
granted by OSI to OSI employees or to individuals who are consultants of OSI
under OSI's 1994 Stock Option Plan, ("1994 OPTION PLAN") or OSI's 1998 Stock
Incentive Plan (the "1998 OPTION PLAN"). The 1994 Option Plan and the 1998
Option Plan are collectively referred to herein as the "OSI OPTION PLANS" and
each individually as an "OSI OPTION PLAN."

     1.11 "OTHER OSI SECURITIES" means, collectively: (a) any warrant, option,
right or other security (other than any OSI Option) that entitles the holder
thereof to purchase or otherwise acquire any shares of the capital stock of OSI
(collectively, "OSI STOCK RIGHTS"); (b) any note, evidence of indebtedness,
stock or other security of OSI (other than OSI Preferred Stock) that is
convertible into or exchangeable for any shares of the capital stock of OSI or
any OSI Stock Rights ("OSI CONVERTIBLE SECURITY"); and (c) any warrant, option,
right, note, evidence of indebtedness, stock or other security that entitles the
holder thereof to purchase or otherwise acquire any OSI Stock Rights or any OSI
Convertible Security. The term "Other OSI Securities" does not include any OSI
Options or any shares of OSI Preferred Stock.

     1.12 "FULLY DILUTED OSI SHARES" means that number of shares of OSI Common
Stock that is equal to the sum of: (a) the total number of shares of OSI Common
Stock that are issued and outstanding immediately prior to the Effective Time;
plus (b) the total number of shares of OSI Common Stock that are issuable upon
the conversion in full of all shares of OSI Preferred Stock that are issued and
outstanding immediately prior to the Effective Time; plus (c) the total number
of shares of OSI Common Stock that are subject to or potentially issuable
(without regard to vesting) under all OSI Options that are issued and
outstanding immediately prior to the Effective Time; plus (d) the total number
of shares of OSI Common Stock that, immediately prior to the Effective Time,
are, directly or indirectly, ultimately or potentially issuable by OSI upon the
exercise, conversion or exchange of all Other OSI Securities (if any) that are
issued and outstanding immediately prior to the Effective Time.

     1.13 "OSI STOCKHOLDERS" means, collectively, those persons (each being
individually referred to herein as a "OSI STOCKHOLDER") who, immediately prior
to the Effective Time, hold the shares of OSI Common Stock and OSI Preferred
Stock that are outstanding immediately prior to the Effective Time; provided,
however, that for purposes of Section 2.4 and Article 11 of this Agreement, the
term "OSI Stockholders" means only those OSI Stockholders (as defined above in
this Section) who are issued shares of HNC Common Stock in the Merger pursuant
to Section 2.1.2 of this Agreement.

     1.14 "OSI DISSENTING SHARES" means any shares of any capital stock of OSI
that (i) are outstanding immediately prior to the Effective Time and (ii) with
respect to which dissenter's appraisal rights to require the purchase of such
dissenting shares for cash at their fair market value in accordance with Section
262 of the Delaware General Corporation Law have been duly and properly
exercised and perfected in connection with the Merger.

     1.15 "HNC COMMON STOCK" means HNC's Common Stock, $0.001 par value per
share.

     1.16 "OSI SERIES A-1 AGGREGATE PREFERENCE AMOUNT" means that dollar amount
equal to the sum of (a) $1.50 multiplied by the total number of shares of OSI
Series A-1 Stock that are issued and outstanding immediately prior to the
Effective Time plus (b) the aggregate dollar amount of all declared but unpaid
dividends (if any) on all the outstanding shares of OSI Series A-1 Stock as of
immediately prior to the Effective Time.

     1.17 "OSI SERIES A-2 AGGREGATE PREFERENCE AMOUNT" means that dollar amount
equal to the sum of (a) $3.00 multiplied by the total number of shares of OSI
Series A-2 Stock that are issued and outstanding immediately prior to the
Effective Time plus (b) the aggregate dollar amount of all declared but unpaid
dividends (if any) on all the outstanding shares of OSI Series A-2 Stock as of
immediately prior to the Effective Time.

     1.18 "OSI SERIES B AGGREGATE PREFERENCE AMOUNT" means that dollar amount
equal to the sum of (a) $3.00 multiplied by the total number of shares of OSI
Series B Stock that are issued and outstanding immediately prior to the
Effective Time plus (b) the aggregate dollar amount of all accrued but unpaid
dividends (if any) on all the outstanding shares of OSI Series B Stock as of
immediately prior to the Effective Time.

     1.19 "OSI SERIES C AGGREGATE PREFERENCE AMOUNT" means that dollar amount
equal to the sum of (a) $4.50 multiplied by the total number of shares of OSI
Series C Stock that are issued and outstanding immediately prior to the
Effective Time plus (b) the aggregate dollar amount of all accrued but unpaid
dividends (if any) on all the outstanding shares of OSI Series C Stock as of
immediately prior to the Effective Time.


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     1.20 "OSI SERIES D AGGREGATE PREFERENCE AMOUNT" means that dollar amount
equal to the sum of (a) $6.00 multiplied by the total number of shares of OSI
Series D Stock that are issued and outstanding immediately prior to the
Effective Time plus (b) the aggregate dollar amount of all accrued but unpaid
dividends (if any) on all the outstanding shares of OSI Series D Stock as of
immediately prior to the Effective Time.

     1.21 "HNC AVERAGE PRICE PER SHARE" means $39.475, which is the average of
the closing prices per share of HNC Common Stock as quoted on the Nasdaq Stock
Market and reported in The Wall Street Journal for the five (5) trading days
immediately preceding (but not including) the Agreement Date (as adjusted to
reflect any Capital Change (as defined in Section 2.3) of HNC that may occur
during such five (5) day period).

     1.22 "HNC SERIES A-1 PREFERRED MERGER SHARES" means that number of shares
of HNC Common Stock, as presently constituted, equal to the quotient obtained by
dividing (a) the OSI Series A-1 Aggregate Preference Amount by (b) the HNC
Average Price Per Share, rounded down to the nearest whole number of shares of
HNC Common Stock.

     1.23 "HNC SERIES A-2 PREFERRED MERGER SHARES" means that number of shares
of HNC Common Stock, as presently constituted, equal to the quotient obtained by
dividing (a) the OSI Series A-2 Aggregate Preference Amount by (b) the HNC
Average Price Per Share, rounded down to the nearest whole number of shares of
HNC Common Stock.

     1.24 "HNC SERIES B PREFERRED MERGER SHARES" means that number of shares of
HNC Common Stock, as presently constituted, equal to the quotient obtained by
dividing (a) the OSI Series B Aggregate Preference Amount by (b) the HNC Average
Price Per Share, rounded down to the nearest whole number of shares of HNC
Common Stock.

     1.25 "HNC SERIES C PREFERRED MERGER SHARES" means that number of shares of
HNC Common Stock, as presently constituted, equal to the quotient obtained by
dividing (a) the OSI Series C Aggregate Preference Amount by (b) the HNC Average
Price Per Share, rounded down to the nearest whole number of shares of HNC
Common Stock.

     1.26 "HNC SERIES D PREFERRED MERGER SHARES" means that number of shares of
HNC Common Stock, as presently constituted, equal to the quotient obtained by
dividing (a) the OSI Series D Aggregate Preference Amount by (b) the HNC Average
Price Per Share, rounded down to the nearest whole number of shares of HNC
Common Stock.

     1.27 "HNC PREFERRED MERGER SHARES" means the number of shares of HNC Common
Stock, as presently constituted, equal to the sum of (i) the HNC Series A-1
Preferred Merger Shares, plus (ii) the HNC Series A-2 Preferred Merger Shares,
plus (iii) the HNC Series B Preferred Merger Shares, plus (iv) the HNC Series C
Preferred Merger Shares plus (v) the HNC Series D Preferred Merger Shares;
provided, however, that in no event shall the number of shares of HNC Common
Stock equal to the HNC Preferred Merger Shares exceed the number of shares of
HNC Common Stock equal to the HNC Merger Shares.

     1.28 "HNC MERGER SHARES" means 2,956,618 shares of HNC Common Stock, as
presently constituted.

     1.29 "HNC PARTICIPATING MERGER SHARES" means the number of shares of HNC
Common Stock, as presently constituted, equal to the HNC Merger Shares minus the
HNC Preferred Merger Shares.

     1.30 "PARTICIPATING STOCK CONVERSION NUMBER" means the quotient obtained by
dividing (a) the number of shares of HNC Common Stock constituting the HNC
Participating Merger Shares by (b) the number of Fully Diluted OSI Shares.

     1.31 "SERIES A-1 PREFERRED CONVERSION NUMBER" means the quotient obtained
by dividing (a) the number of shares of HNC Common Stock constituting the HNC
Series A-1 Preferred Merger Shares by (b) the number of shares of OSI Series A-1
Stock that are issued and outstanding immediately prior to the Effective Time.


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     1.32 "SERIES A-2 PREFERRED CONVERSION NUMBER" means the quotient obtained
by dividing (a) the number of shares of HNC Common Stock constituting the HNC
Series A-2 Preferred Merger Shares by (b) the number of shares of OSI Series A-2
Stock that are issued and outstanding immediately prior to the Effective Time.

     1.33 "SERIES B PREFERRED CONVERSION NUMBER" means the quotient obtained by
dividing (a) the number of shares of HNC Common Stock constituting the HNC
Series B Preferred Merger Shares by (b) the number of shares of OSI Series B
Stock that are issued and outstanding immediately prior to the Effective Time.

     1.34 "SERIES C PREFERRED CONVERSION NUMBER" means the quotient obtained by
dividing (a) the number of shares of HNC Common Stock constituting the HNC
Series C Preferred Merger Shares by (b) the number of shares of OSI Series C
Stock that are issued and outstanding immediately prior to the Effective Time.

     1.35 "SERIES D PREFERRED CONVERSION NUMBER" means the quotient obtained by
dividing (a) the number of shares of HNC Common Stock constituting the HNC
Series D Preferred Merger Shares by (b) the number of shares of OSI Series D
Stock that are issued and outstanding immediately prior to the Effective Time.

     1.36 "OSI ANCILLARY AGREEMENTS" means, collectively, the Certificate of
Merger and each other agreement, certificate or document (other than this
Agreement) which OSI is to enter into as a party thereto, pursuant to or in
connection with this Agreement.

     1.37 "HNC ANCILLARY AGREEMENTS" means, collectively, each agreement,
certificate or document (other than this Agreement) which HNC is to enter into
as a party thereto pursuant to or in connection with this Agreement.

     1.38 "SUB ANCILLARY AGREEMENTS" means, collectively, each agreement,
certificate or document (other than this Agreement) which Sub is to enter into
as a party thereto pursuant to or in connection with this Agreement.

     1.39 "KNOWLEDGE," when used with reference to a party, means the collective
actual knowledge of the executive officers and members of the board of directors
of such party.

     1.40 "MATERIAL ADVERSE EFFECT" when used with reference to any entity or
group of entities, means any event, change or effect that is (or will with the
passage of time be) materially adverse to the financial condition, properties,
assets, liabilities, business, operations, or results of operations of such
entity and its subsidiaries, taken as a whole.

     1.41 "MATERIAL ADVERSE CHANGE" when used with reference to any entity or
group of entities, means a material adverse change other than (a) a change
arising or resulting, directly or indirectly, from general industry, economic or
stock market conditions or (b) a change that is proximately caused by the public
announcement of, and the response or reaction of customers, vendors, licensors,
investors, employees of such entity or group of entities to, this Agreement, the
Merger or any of the transactions contemplated by this Agreement.

     1.42 "OSI STOCKHOLDERS' MEETING" means, as applicable (a) the written
consent of OSI stockholders in lieu of a meeting in accordance with Section 228
of the Delaware General Corporation Law or (b) the special meeting of OSI
stockholders to be called and held by OSI, in order to seek the OSI
stockholders' approval of the Merger, this Agreement and the transactions
contemplated thereby.

     1.43 "TERMINATION DATE" means December 31, 1998; provided however, that:
(a) if, following the filing by HNC and OSI of pre-merger notification and
report forms under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as
amended, and the regulations thereunder (the "HSR ACT"), HNC or OSI shall
receive a formal request from the U.S. Department of Justice or Federal Trade
Commission for additional information (i.e., a "SECOND REQUEST") delivered under
the HSR Act, then (subject to any longer extension of the Termination Date
pursuant to the provisions of the following clause (b) of this Section 1.43) the
Termination Date shall mean the earlier of (i) January 31, 1999 or (ii) the date
thirty (30) days after HNC and the Company each deliver a response that
substantially complies with any such second request; and (b) if, notwithstanding
HNC's compliance with its obligations under the provisions of Section 2.6, the
registration under the Form S-4 (as defined in Section 2.6) of the offer and
issuance by HNC of the shares of HNC Common Stock to be issued in the Merger
pursuant to this Agreement has not been declared effective by the SEC (as
defined in Section 2.2.2) under the 1933 Act (as defined in Section 2.2.2) by
December 15, 1998, then the Termination Date shall mean March 31, 1999.


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     Other capitalized terms defined elsewhere in this Agreement and not defined
in this Article I will have the meanings assigned to such terms in this 
Agreement.

                                    ARTICLE 2

                             PLAN OF REORGANIZATION

     2.1  Conversion of Shares.

          2.1.1 Conversion of Sub Stock. At the Effective Time, each share of
the Common Stock of Sub that is issued and outstanding immediately prior to the
Effective Time will, by virtue of the Merger and without the need for any
further action on the part of the holder thereof, be converted into and become
one (1) share of OSI Common Stock that is issued and outstanding immediately
after the Effective Time, and the shares of OSI Common Stock into which the
shares of Sub Common Stock are so converted in the Merger will be the only
shares of capital stock of OSI that are issued and outstanding immediately after
the Effective Time.

          2.1.2 Conversion of OSI Stock. At the Effective Time:

               (a)  each share of OSI Common Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
Participating Stock Conversion Number, subject to the provisions of Section
2.1.4 regarding the elimination of fractional shares;

               (b)  each share of OSI Series A-1 Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
sum of (a) the Series A-1 Preferred Conversion Number plus (b) the product
obtained by multiplying (i) the Participating Stock Conversion Number by (ii)
the number of shares of OSI Common Stock into which one (1) share of OSI Series
A-1 Stock is convertible under the terms of OSI's Certificate of Incorporation
immediately prior to the Effective Time of the Merger, subject to the provisions
of Section 2.1.4 regarding the elimination of fractional shares;

               (c)  each share of OSI Series A-2 Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
sum of (a) the Series A-2 Preferred Conversion Number plus (b) the product
obtained by multiplying (i) the Participating Stock Conversion Number by (ii)
the number of shares of OSI Common Stock into which one (1) share of OSI Series
A-2 Stock is convertible under the terms of OSI's Certificate of Incorporation
immediately prior to the Effective Time of the Merger, subject to the provisions
of Section 2.1.4 regarding the elimination of fractional shares;

               (d)  each share of OSI Series B Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
sum of (a) the Series B Preferred Conversion Number plus (b) the product
obtained by multiplying (i) the Participating Stock Conversion Number by (ii)
the number of shares of OSI Common Stock into which one (1) share of OSI Series
B Stock is convertible under the terms of OSI's Certificate of Incorporation
immediately prior to the Effective Time of the Merger, subject to the provisions
of Section 2.1.4 regarding the elimination of fractional shares;

               (e)  each share of OSI Series C Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
sum of (a) the Series C Preferred Conversion Number plus (b) the product
obtained by multiplying (i) the Participating Stock Conversion Number by (ii)
the number of shares of OSI Common Stock into which one (1) share of OSI Series
C Stock is convertible under the terms of OSI's Certificate of 


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Incorporation immediately prior to the Effective Time of the Merger, subject to
the provisions of Section 2.1.4 regarding the elimination of fractional shares;
and

               (f)  each share of OSI Series D Stock that is issued and
outstanding immediately prior to the Effective Time (other than any OSI
Dissenting Shares as provided in Section 2.1.3) will, by virtue of the Merger,
and without the need for any further action on the part of the holder thereof,
be converted into a number of shares of HNC Common Stock that is equal to the
sum of (a) the Series D Preferred Conversion Number plus (b) the product
obtained by multiplying (i) the Participating Stock Conversion Number by (ii)
the number of shares of OSI Common Stock into which one (1) share of OSI Series
D Stock is convertible under the terms of OSI's Certificate of Incorporation
immediately prior to the Effective Time of the Merger, subject to the provisions
of Section 2.1.4 regarding the elimination of fractional shares.

          2.1.3 OSI Dissenting Shares. Holders of OSI Dissenting Shares (if any)
will be entitled to their appraisal rights under Section 262 of the Delaware
General Corporation Law with respect to such OSI Dissenting Shares and such OSI
Dissenting Shares will not be converted into shares of HNC Common Stock in the
Merger; provided, however, that nothing in this Section 2.1.3 is intended to
remove, release, waive, alter or affect any of the conditions to HNC's and Sub's
obligations to consummate the Merger set forth in Section 9.8 and Section 9.9,
or any other provision of this Agreement relating to OSI Dissenting Shares.
Shares of the capital stock of OSI that are outstanding immediately prior to the
Effective Time of the Merger and with respect to which dissenting stockholders'
rights of appraisal under the Delaware General Corporation Law have either (a)
not been properly exercised and perfected or (b) with the consent of OSI and
HNC, been withdrawn, will, when such dissenting stockholders' rights can no
longer be legally exercised under the Delaware General Corporation Law, be
converted into HNC Common Stock as provided in Section 2.1.2.

          2.1.4 Fractional Shares. No fractional shares of HNC Common Stock will
be issued in connection with the Merger. In lieu thereof, each holder of OSI
Common Stock and each holder of OSI Preferred Stock who would otherwise be
entitled to receive a fraction of a share of HNC Common Stock pursuant to
Section 2.1.2, computed after aggregating all shares of HNC Common Stock to be
received by such holder pursuant to Section 2.1.2, will instead receive from
HNC, within ten (10) business days after the Effective Time, an amount of cash
equal to the product obtained by multiplying (a) the HNC Average Price Per Share
by (b) the fraction of a share of HNC Common Stock that such holder would
otherwise be entitled to receive.

          2.1.5 Continuation of Vesting and Repurchase Rights. If any shares of
OSI Common Stock or OSI Preferred Stock that are outstanding immediately prior
to the Effective Time are unvested or are subject to a repurchase option, risk
of forfeiture or other condition providing that such shares may be forfeited or
repurchased by OSI upon any termination of the shareholders' employment,
directorship or other relationship with OSI (and/or any affiliate of OSI) under
the terms of any restricted stock purchase agreement or other agreement with OSI
if that does not by its terms provide that such repurchase option, risk of
forfeiture or other condition lapses upon consummation of the Merger, then the
shares of HNC Common Stock issued upon the conversion of such shares of OSI
Common Stock or OSI Preferred Stock in the Merger will continue to be unvested
and subject to the same repurchase options, risks of forfeiture or other
conditions following the Effective Time, and the certificates representing such
shares of HNC Common Stock may accordingly be marked with appropriate legends
noting such repurchase options, risks of forfeiture or other conditions. OSI
shall take all actions that may be necessary to ensure that, from and after the
Effective Time, HNC is entitled to exercise any such repurchase option or other
right set forth in any such restricted stock purchase agreement or other
agreement.

     2.2  Assumption and Conversion of OSI Options.

          2.2.1 Assumption by HNC. Each OSI Option that is outstanding
immediately prior to the Effective Time will, by virtue of the Merger and at the
Effective Time and without the need for any further action on the part of any
holder thereof, be assumed by HNC and converted into an option (a "HNC OPTION")
to purchase that number of shares of HNC Common Stock determined by multiplying
the number of shares of OSI Common Stock that are subject to such OSI Option
immediately prior to the Effective Time by the Participating Stock Conversion
Number, at an exercise price per share of HNC Common Stock equal to the exercise
price per share of OSI Common Stock that was in effect for such OSI Option
immediately prior to the Effective Time divided by the Participating Stock
Conversion Number; provided, however, that if the foregoing calculation would
result in an assumed and converted OSI Option being converted into an HNC Option
that, after aggregating all the shares of HNC Common 


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<PAGE>   187

Stock issuable upon the exercise of such HNC Option, would be exercisable for a
fraction of a share of HNC Common Stock, then the number of shares of HNC Common
Stock subject to such HNC Option will be rounded down to the nearest whole
number of shares of HNC Common Stock. The terms, exercisability, vesting
schedule, status as an "incentive stock option" under Section 422 of the Code
(if applicable) or as a nonqualified stock option, and all other terms and
conditions of each OSI Option (including without limitation the provisions of
the applicable OSI Option Plan that form part of the terms and conditions of
such OSI Option) that is converted into an HNC Option in the Merger will (except
as otherwise provided in the terms of such OSI Options), to the extent permitted
by law and otherwise reasonably practicable, be unchanged and continue in effect
after the Effective Time of the Merger. The pre-Merger employment or other
service of the holder of each OSI Option shall be credited to such holder for
purposes of applying any vesting schedule based on the duration of such holder's
employment or other service contained in the HNC Option issued to such holder
upon the conversion of such OSI Option in the Merger in order to determine the
number of shares of HNC Common Stock that are exercisable under such HNC Option
at any point in time. This Section 2.2.1 is intended to meet the requirements of
Section 424(a) of the Code and shall be interpreted consistent with such intent.

          2.2.2 Registration. Prior to the Effective Time, HNC shall take all
corporate action necessary to reserve for issuance a sufficient number of shares
of HNC Common Stock for delivery upon exercise of the OSI Options assumed in
accordance with Section 2.2.1. HNC will use its best efforts to cause the shares
of HNC Common Stock that are subject to issuance upon exercise of the HNC
Options that are issued upon the conversion of OSI Options under Section 2.2.1
to be registered on a registration statement (or to be issued pursuant to a
then-effective registration statement) on Form S-8 (or successor form)
promulgated by the Securities and Exchange Commission ("SEC") under the
Securities Act of 1933, as amended (the "1933 ACT"), as soon as reasonably
practicable after the Effective Time, and will use its best efforts to maintain
the effectiveness of such Form S-8 registration statement or registration
statements for so long as such HNC Options remain outstanding and HNC Common
Stock is registered under the Securities Exchange Act of 1934, as amended (the
"1934 ACT"). Notwithstanding the foregoing, HNC shall not be obligated to
register or maintain the registration under the 1933 Act of the issuance of any
shares of HNC Common Stock that are subject to a HNC Option held by a person who
is ineligible to have such person's securities registered on Form S-8 (or
successor form).

     2.3  Adjustments for Capital Changes. Notwithstanding the provisions of
Section 2.1 or Section 2.2, if at any time after the Agreement Date and prior to
the Effective Time, HNC recapitalizes, either through a subdivision (or stock
split) of any of its outstanding shares of HNC Common Stock into a greater
number of such shares, or a combination (or reverse stock split) of any of its
outstanding shares of HNC Common Stock into a lesser number of such shares, or
reorganizes, reclassifies or otherwise changes its outstanding shares of HNC
Common Stock into the same or a different number of shares of other classes
(other than through a subdivision or combination of shares provided for in the
preceding clause), or declares a dividend on its outstanding shares payable in
shares of HNC Common Stock or in shares or securities convertible into shares of
HNC Common Stock (each, a "CAPITAL CHANGE"), then the HNC Average Price Per
Share, the number of shares of HNC Common Stock constituting the HNC Merger
Shares, the HNC Participating Merger Shares, the HNC Preferred Merger Shares,
the HNC Series A-1 Merger Shares, the HNC Series A-2 Merger Shares, the HNC
Series B Merger Shares, the HNC Series C Merger Shares, the HNC Series D Merger
Shares, the Series A-1 Preferred Conversion Number, the Series A-2 Preferred
Conversion Number, the Series B Preferred Conversion Number, the Series C
Preferred Conversion Number, the Series D Preferred Conversion Number, and the
Participating Stock Conversion Number, will each be proportionally and equitably
adjusted.

     2.4  Escrow.

          2.4.1 Escrow of Shares; Escrow Agreement. At the Closing (as that term
is defined in Section 7.1) of the Merger, HNC will withhold from the shares of
HNC Common Stock to be issued to OSI Stockholders in the Merger pursuant to
Section 2.1.2 a number of such shares of HNC Common Stock that is equal to five
percent (5%) of the total number of shares of Hawaii Common Stock issued to the
OSI Stockholders pursuant to Section 2.1.2, rounded up to the nearest whole
number of shares to be issued to each OSI Stockholder (such withheld shares of
HNC Common Stock being hereinafter referred to as the "ESCROW SHARES") and will
deliver certificates representing such Escrow Shares to State Street Bank and
Trust Company, N.A. or a similar institution, as escrow agent (the "ESCROW
AGENT"), together with related stock transfer powers, to be held by the Escrow
Agent as security for the OSI Stockholders' indemnification obligations under
Article 11 and pursuant to the provisions of an escrow agreement in
substantially the form of Exhibit A (the "ESCROW AGREEMENT") to be entered into
at the Closing by 


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<PAGE>   188

HNC, the Escrow Agent, and the Representative (as defined below). The Escrow
Shares will be withheld from each OSI Stockholder pro rata in the same
proportion as the total number of shares of HNC Common Stock issuable to such
OSI Stockholder under Section 2.1.2 bears to the total number of shares of HNC
Common Stock issued to all OSI Stockholders under Section 2.1.2, will be
represented by a certificate or certificates issued in the names of each of the
OSI Stockholders in proportion to their respective interests therein and will be
held by the Escrow Agent during that time period commencing on the Effective
Time and ending on the first (1st) anniversary of the Effective Time or on such
later date as may be provided in the Escrow Agreement (the "ESCROW PERIOD").

          2.4.2 Effect of OSI Stockholder Approval; Representative. By their
approval of the Merger, the OSI Stockholders will be conclusively deemed to have
consented to, approved and agreed to be personally bound by: (i) the
indemnification provisions of Article 11; (ii) the Escrow Agreement; and (iii)
the appointment of Douglas K. Anderson as the representative of OSI Stockholders
(the "REPRESENTATIVE") under the Escrow Agreement and as the attorney-in-fact
and agent for and on behalf of each OSI Stockholder as provided in the Escrow
Agreement; and (iv) the taking by the Representative of any and all actions and
the making of any decisions required or permitted to be taken by the
Representative under this Agreement and/or the Escrow Agreement, including,
without limitation, the exercise of the power to: (a) authorize delivery to HNC
of Escrow Shares in satisfaction of indemnity claims by HNC or any other
Indemnified Person (as defined herein) pursuant to Article 11 and/or the Escrow
Agreement; (b) agree to, negotiate, enter into settlements and compromises of,
demand arbitration of, and comply with orders of courts and awards of
arbitrators with respect to, such claims; (c) arbitrate, resolve, settle or
compromise any claim for indemnity made pursuant to Article 11; and (d) take all
actions necessary in the judgment of the Representative for the accomplishment
of the foregoing. HNC shall, at its sole option and discretion, be entitled to
condition the issuance of any shares of HNC Common Stock to an OSI Stockholder
pursuant to Section 2.1.2 on its receipt of a written instrument executed by
such OSI Stockholder, customary in form and substance and reasonably acceptable
to HNC, acknowledging and agreeing to the foregoing. The Representative will
have authority and power to act on behalf of each OSI Stockholder with respect
to the Escrow Agreement and the disposition, settlement or other handling of all
claims under Article 11 hereof or governed by the Escrow Agreement, and all
rights or obligations arising under the Escrow Agreement so long as all OSI
Stockholders are treated in the same manner. The OSI Stockholders will be bound
by all actions taken and documents executed by the Representative in connection
with the Escrow Agreement, and HNC will be entitled to rely on any action or
decision of the Representative. In performing the functions specified in this
Agreement and the Escrow Agreement, the Representative will not be liable to any
OSI Stockholder in the absence of gross negligence or willful misconduct on the
part of the Representative. Any out-of-pocket costs and expenses reasonably
incurred by the Representative in connection with actions taken pursuant to the
terms of the Escrow Agreement will be paid by the OSI Stockholders to the
Representative out of the Escrow Shares pro rata in proportion to their
respective percentage interests in the Escrow Shares, to the extent that any
Escrow Shares continue to be owned by OSI Stockholders following expiration of
the Escrow Period and satisfaction of all claims made or asserted by HNC or any
Indemnified Person under Article 11 or the Escrow Agreement, in all cases
subject to HNC's rights in and to the Escrow Shares.

     2.5  Effects of the Merger. At and upon the Effective Time of the Merger:

          (a)  the separate existence of Sub will cease and Sub will be merged
with and into OSI, and OSI will be the surviving corporation of the Merger
(sometimes hereinafter referred to as the "SURVIVING CORPORATION") pursuant to
the terms of this Agreement and the Certificate of Merger;

          (b)  the Certificate of Incorporation of OSI will be amended and
restated to read as set forth in Exhibit B attached hereto, which will be the
Certificate of Incorporation of the Surviving Corporation immediately after the
Effective Time;

          (c)  the Bylaws of OSI will be amended to read as set forth in the
Bylaws attached as Exhibit C hereto, which will be the Bylaws of the Surviving
Corporation immediately after the Effective Time, and such Bylaws shall
authorize a Board of Directors consisting of exactly four (4) directors;

          (d)  each share of OSI Common Stock and each share of OSI Preferred
Stock that is outstanding immediately prior to the Effective Time, and each OSI
Option that is outstanding immediately prior to the Effective Time, will be
converted into HNC Common Stock or an HNC Option, as applicable, as provided in
this Article 2;


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<PAGE>   189

          (e)  each share of Sub Common Stock that is outstanding immediately
prior to the Effective Time will be converted into one (1) share of OSI Common
Stock as provided in Section 2.1.1;

          (f)  the officers of the Surviving Corporation immediately after the
Effective Time will be the individuals who are the officers of Sub immediately
prior to the Effective Time, and each such individual shall, immediately after
the Effective Time, hold the same office or offices of the Surviving Corporation
as the office or offices that such individual held with Sub immediately prior to
the Effective Time;

          (g)  the members of the Board of Directors of the Surviving
Corporation immediately after the Effective Time will be Douglas K. Anderson and
three (3) persons nominated by HNC, who are currently anticipated to be Robert
L. North, Raymond V. Thomas and Michael A. Thiemann; and

          (h)  the Merger will, from and after the Effective Time, have all of
the effects provided by applicable law.

     2.6  Registration on Form S-4. The shares of HNC Common Stock to be issued
in the Merger shall be registered under the 1933 Act on a Form S-4 registration
statement (the "FORM S-4"). As promptly as practicable after the Agreement Date,
HNC shall prepare and file the Form S-4 with the SEC, together with the
prospectus to be included therein (the "PROSPECTUS/PROXY STATEMENT") and any
other documents required by the 1933 Act or the 1934 Act in connection with the
Merger. HNC and OSI shall each use its commercially reasonable efforts to
respond promptly to any comments of the SEC and to have the Form S-4 declared
effective under the 1933 Act as promptly as practicable after such filing of the
Form S-4. HNC shall also take any action reasonably required to be taken under
any applicable state securities or "blue sky" laws and regulations of the Nasdaq
Stock Market in connection with the issuance of the HNC Common Stock in
connection with the Merger. OSI shall promptly furnish to HNC all information
concerning OSI and OSI's stockholders as may be reasonably required in
connection with the Form S-4 and any action contemplated by this Section 2.6.
HNC and OSI shall notify each other promptly of the receipt of any comments from
the SEC or its staff on the Form S-4 and of any request by the SEC or its staff
for amendments or supplements to the Form S-4 or the Prospectus/Proxy Statement
or for additional information and will supply the other with copies of all
correspondence with the SEC or its staff with respect to the Form S-4 or the
Prospectus/Proxy Statement. Whenever any event occurs which should be set forth
in an amendment or supplement to the Form S-4 or the Prospectus/Proxy Statement,
HNC or OSI, as the case may be, shall promptly inform the other of such
occurrence and cooperate in filing such amendment or supplement with the SEC or
its staff, and/or mailing such amendment or supplement to stockholders of OSI.

     2.7  Tax-Free Reorganization. The parties intend to adopt this Agreement as
a tax-free plan of reorganization and to consummate the Merger in accordance
with the provisions of Section 368(a) of the Code. However, HNC makes no
representations or warranty to OSI or to any stockholder of OSI regarding the
tax treatment of the Merger or whether the Merger will qualify as a tax-free
plan of reorganization under the Code, and OSI acknowledges that it is relying
on its own tax advisors in connection with the Merger and the other transactions
contemplated by this Agreement.

     2.8  Pooling of Interests. The parties acknowledge that, as a material
inducement to HNC to enter into this Agreement and consummate the Merger, the
Merger is intended to qualify as a "pooling of interests" for accounting and
financial reporting purposes. Accordingly, concurrently with the execution of
this Agreement, each stockholder of OSI who is an "affiliate" of OSI as defined
in Rule 405 promulgated under the 1933 Act shall execute and deliver to HNC an
OSI Affiliate Agreement in the form of Exhibit D hereto (the "OSI AFFILIATE
AGREEMENT").

     2.9  Further Assurances. If, at any time before or after the Effective
Time, HNC believes or is advised that any further instruments, deeds,
assignments or assurances are reasonably necessary or desirable to consummate
the Merger or to carry out the purposes and intent of this Agreement at or after
the Effective Time, then HNC, the Surviving Corporation and their respective
officers and directors may execute and deliver all such proper deeds,
assignments, instruments and assurances and do all other things necessary or
desirable to consummate the Merger and to carry out the purposes of this
Agreement, in the name of OSI or otherwise.


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                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     OSI hereby represents and warrants to HNC that, except as set forth in the
letter addressed to HNC from OSI and dated as of the Agreement Date (including
all schedules thereto) which has been delivered by OSI to HNC concurrently with
the parties' execution of this Agreement (the "OSI DISCLOSURE LETTER"; for all
purposes of this Agreement (including without limitation Articles 9 and 11), the
statements contained in the OSI Disclosure Letter and its schedules shall also
be deemed to be representations and warranties made and given by OSI under
Article 3 of this Agreement), each of the following representations, warranties
and statements in this Article 3 are true and correct as of the Agreement Date
and will be true and correct on and as of the Closing Date:

     3.1  Organization and Good Standing. OSI is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware.
OSI has the corporate power and authority to own, operate and lease its
properties and to carry on its business as now conducted and as presently
proposed to be conducted as described in that certain registration statement on
Form S-1 originally filed by OSI with the SEC under the 1933 Act on June 10,
1998, as most recently amended by a filing or filings of OSI made with the SEC
(the "OSI FORM S-1"), and is qualified to transact business, and is in good
standing, in each jurisdiction in which its failure to be so qualified would
have a Material Adverse Effect on OSI. OSI has delivered to HNC true and correct
copies of the currently effective Certificate of Incorporation and Bylaws or
other charter documents, as applicable, of OSI and each of its subsidiaries (if
any), each as amended to date. Neither OSI nor any of its subsidiaries is in
violation of its Certificate of Incorporation, Bylaws or other charter
documents.

     3.2  Subsidiaries. Except as expressly disclosed in Schedule 3.2 of the OSI
Disclosure Letter, OSI does not have any subsidiary or any equity or ownership
interest, whether direct or indirect, in any corporation, partnership, limited
liability company, joint venture or other business entity. Any subsidiary of OSI
that is disclosed in Schedule 3.2 of OSI Disclosure Letter is a corporation duly
organized, validly existing and in good standing under the laws of its
jurisdiction of organization, has the corporate power and authority to own,
operate and lease its properties and to carry on its business as now conducted
and as proposed to be conducted, and is qualified to transact business, and is
in good standing, in each jurisdiction in which its failure to be so qualified
would have a Material Adverse Effect on OSI. OSI is the owner of all of the
issued and outstanding shares of capital stock and other securities of each of
its subsidiaries; all such shares and other securities are duly authorized,
validly issued, fully paid and non-assessable; and all of the outstanding shares
of capital stock and other securities of each such subsidiary are owned by OSI
free and clear of all liens, charges, claims, encumbrances or rights of others.
There are no outstanding subscriptions, options, warrants, calls, rights,
convertible securities or other commitments or agreements of any character under
which any third party has any existing or potential right to purchase or
otherwise acquire any shares of capital stock or other securities of any such
subsidiary, whether from OSI or such subsidiary.

     3.3  Power, Authorization and Validity.

          3.3.1 Power and Authority. OSI has all requisite corporate power and
authority to enter into, execute, deliver, and perform its obligations under,
this Agreement and all OSI Ancillary Agreements, and (subject to the approval of
this Agreement by OSI's stockholders) to consummate the Merger. The execution,
delivery and performance by OSI of this Agreement and each of the OSI Ancillary
Agreements have been duly and validly approved and authorized by all necessary
corporate action on the part of OSI's Board of Directors in compliance with
applicable law and OSI's Certificate of Incorporation and Bylaws, each as
amended.

          3.3.2 No Consents. No consent, approval, order or authorization of, or
registration, declaration or filing with, any court, administrative agency,
commission or other governmental authority (each, a "GOVERNMENTAL AUTHORITY"),
or any other person or entity, governmental or otherwise, is necessary or
required to be made or obtained by OSI to enable OSI to lawfully execute and
deliver, enter into, and to perform its obligations under, this Agreement and
each of the OSI Ancillary Agreements, and to consummate the Merger, except for:
(a) the approval of this Agreement by the stockholders of OSI in compliance with
the requirements of applicable law and OSI's Certificate of Incorporation and
Bylaws, each as amended; (b) the filing of the Certificate of Merger with the
Delaware Secretary of State and (c) such filings and notifications as may be
required to be made by OSI and/or any stockholder of OSI in connection with the
Merger under the HSR Act.


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<PAGE>   191

          3.3.3 Enforceability. This Agreement and each of the OSI Ancillary
Agreements are, or when executed by OSI will be, valid and binding obligations
of OSI, enforceable against OSI in accordance with their respective terms,
except as to the effect of (a) applicable bankruptcy and other similar laws
affecting the rights of creditors generally and (b) rules of law and equity
governing specific performance, injunctive relief and other equitable remedies.

     3.4  Capitalization of OSI.

          3.4.1 Outstanding Stock. The authorized capital stock of OSI consists
entirely of: (i) 19,055,417 shares of Common Stock, $0.01 par value, of which a
total of 2,236,013 shares are issued and outstanding as of the Agreement Date
and (ii) 5,944,583 shares of Preferred Stock, $0.01 par value, of which (a)
1,000,000 shares have been designated Series A-1 Preferred Stock, of which a
total of 1,000,000 shares are outstanding as of the Agreement Date, 583,333
shares have been designated Series A-2 Preferred Stock, of which a total of
583,333 shares are outstanding as of the Agreement Date, 1,736,250 shares have
been designated Series B Preferred Stock, of which a total of 1,627,917 shares
are issued and outstanding as of the Agreement Date, 1,375,000 shares have been
designated Series C Preferred Stock, of which a total of 1,263,889 shares are
issued and outstanding as of the Agreement Date, and 1,250,000 shares have been
designated Series D Preferred Stock, of which a total of 833,333 shares are
issued and outstanding as of the Agreement Date; and except as expressly
described above in this Section 3.4.1, no other shares of any capital stock of
OSI are authorized, issued or outstanding. No fractional shares of OSI Common
Stock or OSI Preferred Stock are issued or outstanding and OSI holds no treasury
shares. None of the outstanding shares of OSI's capital stock has been issued
under OSI's 1998 Employee Stock Purchase Plan.

     As of the Closing Date, there will have been no change in the authorized 
and outstanding capital stock of OSI as represented in the foregoing sentences
of this Section 3.4.1, other than the following changes if made in compliance
with this Agreement: (i) the issuance of shares of OSI Common Stock pursuant to
the exercise of OSI Options or any Warrants represented as being outstanding on
the Agreement Date in Section 3.4.2 or (ii) the conversion into Common Stock of
any shares of OSI Preferred Stock that are either (A) represented as being
issued and outstanding on the Agreement Date in this Section 3.4.1 or (B) issued
after the Agreement Date pursuant to a Warrant represented as being outstanding
on the Agreement Date in Section 3.4.2. All issued and outstanding shares of
OSI's capital stock have been duly authorized and validly issued, are fully paid
and nonassessable, are not subject to any claim, lien, preemptive right, right
of first refusal, right of first offer or right of rescission, and have been
offered, issued, sold and delivered by OSI in compliance with all registration
or qualification requirements (or applicable exemptions therefrom) of all
applicable federal and state securities laws. A list of all holders of OSI's
outstanding capital stock, and the total number of shares of OSI Common Stock
and OSI Preferred Stock (and the number of shares of each series of OSI
Preferred Stock) owned by each such holder is set forth in Schedule 3.4.1 to the
OSI Disclosure Letter. During the two (2) year period immediately prior to the
Agreement Date, OSI has not redeemed, repurchased or otherwise reacquired any
shares of its capital stock from any stockholder of OSI. No Stockholder of OSI
owes OSI any money or other consideration representing any part of the purchase
price of any outstanding shares of OSI's capital stock, including without
limitation any money due under a promissory note payable to OSI. OSI has no
liability to any stockholder for any dividends that have been declared or
accrued.

          3.4.2 Options, Warrants or Rights. Except for OSI Options to purchase
an aggregate total of 1,687,500 shares of OSI Common Stock that are outstanding
on the Agreement Date (all of which OSI Options were granted under OSI Option
Plans), and warrants to purchase 108,333 shares of Series B Preferred Stock,
111,111 shares of Series C Preferred Stock and 416,667 shares of Series D
Preferred Stock (collectively hereinafter referred to as the "WARRANTS") there
are no options, warrants, convertible securities or other securities, calls,
commitments, conversion privileges, preemptive rights, rights of first refusal,
rights of first offer or other rights or agreements outstanding to purchase or
otherwise acquire (whether directly or indirectly) any shares of OSI's
authorized but unissued capital stock or any securities convertible into or
exchangeable for any shares of OSI's capital stock or obligating OSI to grant,
issue, extend, or enter into any such option, warrant, convertible security or
other security, call, commitment, conversion privilege, preemptive right, right
of first refusal, right of first offer or other right or agreement. A total of
3,000,000 shares of OSI Common Stock are reserved for issuance under the 1994
Option Plan, and a total of up to 2,900,000 shares of OSI Common Stock are
reserved for issuance under the 1998 Option Plan. As of the Agreement Date, a
total of 131,013 shares of OSI Common Stock have been issued under OSI Option
Plans, all of which were issued under the 1994 Option Plan, and no shares have
been issued under the 1998 Option Plan. As of the Agreement Date, a total of
1,687,500 shares of OSI Common Stock are potentially issuable upon the exercise
of all options granted under the 1994 Option Plan that are outstanding on the
Agreement Date and no stock options have 


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<PAGE>   192

been granted under the 1998 Option Plan. Attached as Schedule 3.4.2 to the OSI
Disclosure Letter is (i) a true and complete list of all holders of all OSI
Options that are outstanding on the Agreement Date, the number of OSI Options
held by each such holder, the exercise price and vesting schedule of each OSI
Option held by each such person and the name of the OSI Option Plan under which
each such option was granted and (ii) a true and complete list of all holders of
all Warrants that are outstanding on the Agreement Date, the number, class and
series of the shares subject to each such Warrant held by each such holder, the
exercise price and (if applicable) vesting schedule of each Warrant. During the
two (2) year period immediately prior to the Agreement Date, except as may be
expressly required by the terms of OSI Option Plans, OSI has not authorized, or
taken any action to authorize, (i) the release of any vesting condition to the
exercise of any OSI Option or any Warrant or (ii) the acceleration of the time
during which any holder of any option, warrant or other right to purchase or
acquire any share of capital stock of OSI may exercise all or any portion of
such option, warrant or right. The OSI Option Plans and any change in (a) the
number of shares reserved under either such OSI Option Plan or (b) the eligible
participants under such OSI Option Plan have each been duly and validly approved
by OSI's Board of Directors and by OSI's stockholders, and with respect to each
of the OSI Option Plans (or any such change) such stockholder approval was
obtained within one (1) year of the date on which such OSI Option Plan (or such
change) was approved by OSI's Board of Directors.

          3.4.3 No Voting Arrangements or Registration Rights. There are no
voting agreements, voting trusts, proxies, preemptive rights, rights of first
refusal, rights of first offer or other restrictions (other than normal
restrictions on transfer under applicable federal and state securities laws)
applicable to any of OSI's outstanding stock or other securities or to the
conversion of any shares of OSI's capital stock in the Merger pursuant to any
agreement or obligation to which OSI is a party or, to OSI's knowledge, pursuant
to any other agreement or obligation, except for the Voting Agreements (and
related Proxies) referred to in Section 3.22. OSI is not under any obligation to
register under the 1933 Act any of its presently outstanding shares of stock or
other securities or any stock or other securities that may be subsequently
issued.

     3.5  No Conflict. Neither the execution and delivery of this Agreement nor
any of the OSI Ancillary Agreements by OSI, nor the consummation of the
transactions contemplated hereby or thereby, will conflict with, or (with or
without notice or lapse of time, or both) result in a termination, breach or
violation of: (i) any provision of the Certificate of Incorporation or Bylaws or
other charter documents of OSI or any of its subsidiaries (if any) as currently
in effect; (ii) any federal, state, local or foreign judgment, writ, decree,
order, statute, rule or regulation applicable to OSI or any of its subsidiaries
(if any) or any of their respective assets or properties; or (iii) any material
instrument, agreement, contract, undertaking, understanding, letter of intent,
memorandum of understanding or commitment (whether verbal or in writing) to
which OSI or any of its subsidiaries (if any) is a party or by which OSI or any
of its subsidiaries (if any) or any of their respective assets or properties are
bound. Neither OSI's entering into this Agreement nor the consummation of the
Merger will give rise to, or trigger the application of, any rights of any third
party which have not been waived by such third party in a writing signed by it.
The consummation of the Merger by OSI will not require the consent, release,
waiver or approval of any third party other than (i) the approval of OSI's
stockholders and (ii) the expiration of any applicable waiting periods regarding
the Merger under the HSR Act.

     3.6  Litigation. There is no action, claim, suit, arbitration, mediation,
proceeding, claim or investigation pending against OSI or any of its
subsidiaries (or to OSI's knowledge, against any officer, director, employee or
agent of OSI or any of its subsidiaries in their capacity as such or relating to
their employment, services or relationship with OSI or such subsidiary) before
any court, administrative agency or arbitrator, nor, to OSI's knowledge, has any
such action, suit, proceeding, arbitration, mediation, claim or investigation
been threatened. There is no judgment, decree, injunction, rule or order of any
governmental entity or agency, court or arbitrator outstanding against OSI. To
OSI's knowledge, there is no basis for any person, firm, corporation or other
entity to assert a claim against OSI based upon: (a) OSI's entering into this
Agreement or any OSI Ancillary Agreement or consummating the Merger or any of
the transactions contemplated by this Agreement or any OSI Ancillary Agreement;
(b) a claim of ownership of, or options, warrants or other rights to acquire
ownership of, any shares of the capital stock of OSI; or (c) any rights as a OSI
stockholder, including any option, warrant or preemptive rights or rights to
notice or to vote.

     3.7  Taxes.

          3.7.1 OSI has timely filed all federal, state, local and foreign tax
returns required to be filed by it, has timely paid all taxes required to be
paid by it in respect of all periods for which returns have been filed, has
established an adequate accrual or reserve for the payment of all taxes payable
in respect of the periods subsequent to 


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the periods covered by the most recent applicable tax returns (which accrual or
reserve as of the Balance Sheet Date (as defined in Section 3.8 below) is fully
reflected on the Balance Sheet (as defined in Section 3.8 below) and in any more
recent balance sheet of OSI provided by OSI to HNC on or before the Agreement
Date), has made all necessary estimated tax payments, and has no material
liability for taxes in excess of the amount so paid or accruals or reserves so
established. OSI is not delinquent in the payment of any tax or in the filing of
any tax returns, and no deficiencies for any tax have been threatened, claimed,
proposed or assessed against OSI, any of its subsidiaries, or any of the
officers, employees or agents of OSI or any of its subsidiaries in their
capacity as such. OSI has not received any notification that any material issues
have been raised by (or are currently pending) before the Internal Revenue
Service or any other taxing authority (including but not limited to any sales or
use tax authority) regarding OSI or any of its subsidiaries and no tax return of
OSI or any of its subsidiaries has ever been audited by the Internal Revenue
Service or any state or local taxing agency or authority. No tax liens have been
filed against any assets of OSI or any of its subsidiaries. OSI has not filed
any election under Section 341(f) of the Code. OSI and its subsidiaries have
each withheld with respect to each of its employees all taxes, including but not
limited to federal and state income taxes, FICA, Medicare, FUTA and other taxes,
required to be withheld, and paid such withheld amounts to the appropriate tax
authority within the time prescribed by law.

          3.7.2 For the purposes of this Section, the terms "TAX" and "TAXES"
include all federal, state, local and foreign income, alternative or add-on
minimum income, gains, franchise, excise, property, property transfer, sales,
use, employment, license, payroll, ad valorem, payroll, documentary, stamp,
occupation, recording, value added or transfer taxes, governmental charges,
fees, customs duties, levies or assessments (whether payable directly or by
withholding), and, with respect to any such taxes, any estimated tax, interest,
fines and penalties or additions to tax and interest on such fines, penalties
and additions to tax.

     3.8  OSI Financial Statements. OSI has delivered to HNC as (i) OSI's
audited consolidated balance sheets as of December 31, 1996 and 1997 and OSI's
audited consolidated statements of operations, statements of cash flows and
statements of changes in stockholders' equity for each of the years ended
December 31, 1995, 1996 and 1997, and (ii) OSI's unaudited consolidated balance
sheet as of June 30, 1998 (the "BALANCE SHEET"), and OSI's unaudited
consolidated statements of operations for the three (3) month period ended March
31, 1998 and for the six (6) month period ended June 30, 1998 (all such
financial statements of OSI and the notes thereto are hereinafter collectively
referred to as the "OSI FINANCIAL STATEMENTS"). The OSI Financial Statements (a)
are derived from and in accordance with the books and records of OSI, (b) fairly
present the financial condition of OSI at the dates therein indicated and the
results of operations for the periods therein specified and (c) have been
prepared in accordance with generally accepted accounting principles applied on
a basis consistent with prior periods; provided, however, that the unaudited
Financial Statements referred to in clause (ii) above are subject to normal
recurring year-end adjustments and do not include footnotes. OSI has no material
debt, liability or obligation of any nature, whether accrued, absolute,
contingent or otherwise, and whether due or to become due, except for (i) those
shown on the Balance Sheet, (ii) those that may have been incurred after June
30, 1998, the date of the Balance Sheet (the "BALANCE SHEET DATE") in the
ordinary course of OSI's business consistent with its past practices, and that
are not material in amount, either individually or collectively and (iii) those
that are not required to be set forth on or reflected in the Balance Sheet under
generally accepted accounting principles. All reserves established by OSI and
set forth in or reflected in the Balance Sheet are reasonably adequate. At the
Balance Sheet Date, there were no material loss contingencies (as such term is
used in Statement of Financial Accounting Standards No. 5 issued by the
Financial Accounting Standards Board in March 1975) which are not adequately
provided for in the Balance Sheet as required by said Statement No. 5.

     3.9  Title to Properties. OSI and each of its subsidiaries have good and
marketable title to all of their respective assets and properties (including but
not limited to those shown on the Balance Sheet), free and clear of all
mortgages, deeds of trust, security interests, pledges, liens, title retention
devices, collateral assignments, claims, charges, restrictions or other
encumbrances of any kind (other than liens for current taxes that are not yet
due and payable). All machinery, vehicles, equipment and other tangible personal
property owned or leased by OSI and its subsidiaries or used in its business are
in good condition and repair, normal wear and tear excepted, and all leases of
real or personal property to which OSI or any of its subsidiaries is a party are
fully effective and afford OSI or its subsidiary, as applicable, peaceful and
undisturbed leasehold possession of the real or personal property that is the
subject of the lease. Neither OSI nor any of its subsidiaries is in violation of
any zoning, building, safety or environmental ordinance, regulation or
requirement or other law or regulation applicable to the operation of its owned
or leased properties (the violation of which would result in a Material Adverse
Effect on OSI), nor has OSI received 


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any notice of violation of law with which it has not complied. Neither OSI nor
any of its subsidiaries owns any real property.

     3.10 Absence of Certain Changes. Since the Balance Sheet Date, there has
not been with respect to OSI or any of its subsidiaries any:

          (a)  Material Adverse Change in the financial condition, properties,
assets, liabilities, businesses, operations, or results of operations of OSI or
any of its subsidiaries;

          (b)  amendment or change in the Certificate of Incorporation or Bylaws
of OSI;

          (c)  incurrence, creation or assumption by OSI or any of its
subsidiaries of (i) any mortgage, deed of trust, security interest, pledge,
lien, title retention device, collateral assignment, claim, charge, restriction
or other encumbrance of any kind on any of the assets or properties of OSI or
any of its subsidiaries; or (ii) any obligation or liability or any indebtedness
for borrowed money;

          (d)  issuance or sale of any debt or equity securities of OSI or any
of its subsidiaries, or any options, warrants or other rights to acquire from
OSI or any of its subsidiaries, directly or indirectly, any debt or equity
securities of OSI or any of its subsidiaries;

          (e)  payment or discharge by OSI or any of its subsidiaries of any
security interest, lien, claim, or encumbrance of any kind on any asset or
property of OSI or any of its subsidiaries, or the payment or discharge of any
liability that was not either shown or reflected on the Balance Sheet or
incurred in the ordinary course of OSI's business after the Balance Sheet Date
in an amount not in excess of $50,000 for any single liability to a particular
creditor;

          (f)  purchase, license, sale, assignment or other disposition or
transfer, or any agreement or other arrangement for the purchase, license, sale,
assignment or other disposition or transfer, of any of the assets, properties or
goodwill of OSI other than a license of any product or products of OSI or any of
its subsidiaries made in the ordinary course of OSI's business;

          (g)  damage, destruction or loss of any property or asset, whether or
not covered by insurance, having (or likely with the passage of time to have) a
Material Adverse Effect on OSI;

          (h)  declaration, setting aside or payment of any dividend on, or the
making of any other distribution in respect of, the capital stock of OSI, any
split, combination or recapitalization of the capital stock of OSI or any direct
or indirect redemption, purchase or other acquisition of the capital stock of
OSI or any change in any rights, preferences, privileges or restrictions of any
outstanding security of OSI;

          (i)  change or increase in the compensation payable or to become
payable to any of the officers, directors, or employees of OSI or any of its
subsidiaries, or any bonus or pension, insurance or other benefit payment or
arrangement (including without limitation stock awards, stock option grants,
stock appreciation rights or stock option grants) made to or with any of such
officers, employees or agents except in connection with normal employee salary
or performance reviews or otherwise in the ordinary course of OSI's business;

          (j)  obligation or liability incurred by OSI or any of its
subsidiaries to any of its officers, directors or stockholders except for normal
and customary compensation and expense allowances payable to officers in the
ordinary course of OSI's business;

          (k)  making by OSI or any of its subsidiaries of any loan, advance or
capital contribution to, or any investment in, any officer, director or
stockholder of OSI or any firm or business enterprise in which any such person
had a direct or indirect material interest at the time of such loan, advance,
capital contribution or investment;

          (l)  entering into, amendment of, relinquishment, termination or
non-renewal by OSI of any contract, lease, transaction, commitment or other
right or obligation other than in the ordinary course of its business or any
written or oral indication or assertion by the other party thereto of any
material problems with OSI's services or performance under such contract, lease,
transaction, commitment or other right or obligation or of such other party's


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demand to amend, terminate or not renew any such contract, lease, transaction,
commitment or other right or obligation;

          (m)  material change in the manner in which OSI extends discounts,
credits or warranties to customers or otherwise deals with its customers;

          (n)  entering into by OSI or any of its subsidiaries of any
transaction, contract or agreement that by its terms requires or contemplates a
current and/or future financial commitment, expense (inclusive of overhead
expense) or obligation on the part of OSI or any of its subsidiaries involving
in excess of $100,000 (provided that the amount of such financial commitments
and expenses for all such transactions, contracts or agreements does not exceed
$350,000 in the aggregate) or that is not entered into in the ordinary course of
OSI's business, or the conduct of any business or operations by OSI that is
other than in the ordinary course of OSI's business;

          (o)  license, transfer or grant of a right under any OSI IP Rights (as
defined in Section 3.13 below), other than those licensed, transferred or
granted in the ordinary course of OSI's business consistent with its past
practices; or

          (p)  agreement or arrangement made by OSI to take any action after the
Agreement Date which, if taken prior to the Agreement Date, would have made any
representation or warranty of OSI set forth in Article 3 of this Agreement
untrue or incorrect as of the date when made.

     3.11 Contracts and Commitments. Schedule 3.11 to the OSI Disclosure Letter
sets forth a list of each of the following written or oral contracts,
agreements, commitments or other instruments to which OSI is a party or to which
OSI or any of its assets or properties is bound:

          (a)  any distributor, OEM (Original Equipment Manufacturer), VAR
(Value Added Reseller), sales representative or similar agreement under which
any third party is authorized to sell, sublicense, lease, distribute, market or
take orders for, any product or technology of OSI;

          (b)  any continuing contract for the future purchase, sale, license,
provision or manufacture of products, material, supplies, equipment or services
requiring payment to or from OSI in an amount in excess of $50,000 per annum
which is not terminable on ninety (90) or fewer days' notice without cost or
other liability to OSI;

          (c)  any contract or commitment in which OSI has granted or received
manufacturing rights, most favored customer pricing provisions or exclusive
marketing rights relating to any product or service, group of products or
services, market or geographic territory;

          (d)  any OSI IP Rights Agreement (as defined in Section 3.13) and any
other contract providing for the development of software or other technology or
intellectual property by or for OSI, or the license of any software, other
technology or intellectual property to OSI, which software, other technology or
intellectual property is used or incorporated in any product currently sold,
licensed, leased, distributed or marketed by OSI or to provide any service
currently provided or marketed by OSI or currently contemplated by OSI to be
used or incorporated in any products to be sold, licensed, leased, distributed
or marketed by OSI or services to be provided or marketed by OSI (other than
software products that are generally available for license to the public at a
per copy license fee of less than $10,000 per copy (such software products being
hereinafter referred to as "OFF-THE-SHELF SOFTWARE");

          (e)  any joint venture or partnership contract or agreement or other
agreement which has involved or is reasonably expected to involve a sharing of
profits, expenses or losses with any other party in an amount of $25,000 or more
per annum;

          (f)  any contract or commitment for or relating to the employment of
any officer, employee or consultant of OSI, any indemnification agreement for
the benefit of any director, officer or employee of OSI, or any other type of
contract or understanding with any officer, employee or consultant of OSI that
is not immediately terminable by OSI without cost or other liability;

          (g)  any indenture, mortgage, trust deed, promissory note, loan
agreement, security agreement, guarantee or other agreement or commitment for
the borrowing of money, for a line of credit or for a leasing 


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transaction of a type required to be capitalized in accordance with Statement of
Financial Accounting Standards No. 13 of the Financial Accounting Standards
Board;

          (h)  any lease or other agreement under which OSI is lessee of or
holds or operates any items of (i) tangible personal property owned by any third
party and under which payments to such third party exceed $50,000 per annum
and/or (ii) real property owned by any third party and under which payments to
such third party exceed $10,000 per annum;

          (i)  any agreement or arrangement for the sale of any assets,
properties, services or rights having a value in excess of $25,000, other than
in the ordinary course of OSI's business;

          (j)  any agreement that restricts OSI from engaging in any aspect of
its business, from participating or competing in any line of business or that
restricts OSI from engaging in any business in any geographic area;

          (k)  any agreement relating to the sale, issuance, grant, exercise,
award, purchase, repurchase or redemption of any shares of capital stock or
other securities of OSI or any options, warrants or other rights to purchase or
otherwise acquire any such shares of stock, other securities or options,
warrants or other rights therefor;

          (l)  consulting or similar agreement under which OSI provides any
advice or services to a customer of OSI for an annual compensation to OSI of
$20,000 per year or more (other than OSI's standard end-user customer
maintenance and support agreements);

          (m)  any contract with or commitment to any labor union; or

          (n)  any contract or arrangement under which OSI or any of its
subsidiaries has made any commitment to develop any new technology, to deliver
any software currently under development or to enhance or customize any software
(other than pursuant to OSI's standard end-user customer maintenance and support
agreements); and

          (o)  any other agreement, contract, commitment or instrument that is
material to the business of OSI or that involves a future commitment by OSI in
excess of $50,000.

     A copy of each agreement or document required by this Section to be listed 
on Schedule 3.11 to the OSI Disclosure Letter (such agreements and documents
being hereinafter collectively referred to as the "OSI MATERIAL AGREEMENTS") has
been delivered to HNC's counsel.

     3.12 No Default; No Consent Required; No Restrictions. OSI is not in breach
or default in any material respect under any OSI Material Agreement. OSI is not
a party to any contract, agreement or arrangement which has had, or could
reasonably be expected to have, a Material Adverse Effect on OSI. OSI does not
have any material liability for renegotiation of government contracts or
subcontracts, if any. Except as set forth in Schedule 3.12 to the OSI Disclosure
Letter, no consent or approval of any third party is required to ensure that,
following the Effective Time, any OSI Material Agreement will continue to be in
full force and effect without any breach or violation thereof caused by virtue
of the Merger or by any other transaction called for by this Agreement, or any
OSI Ancillary Agreement. Neither OSI nor any of its subsidiaries is a party to,
and no asset or property of OSI or any of its subsidiaries is bound or affected
by, any judgment, injunction, order, decree, contract, covenant or agreement
(noncompete or otherwise) that restricts or prohibits (or purports to restrict
or prohibit) OSI or any of its subsidiaries from freely engaging in any business
now conducted by any of them or from competing anywhere in the world (including
without limitation any contracts, covenants or agreements restricting the
geographic area in which OSI or any of its subsidiaries may sell, license,
market, distribute or support any products or technology or provide services, or
restricting the markets, customers or industries that OSI or any of its
subsidiaries may address in operating their respective businesses), or includes
any grants by OSI of exclusive licenses. Neither OSI nor any subsidiary of OSI
has received any notice or other communication regarding any actual or possible
violation or breach of, or default under, any OSI Material Agreement.


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     3.13 Intellectual Property.

          3.13.1 OSI and its subsidiaries own, or have the valid right or
license to use, possess, sell or license, all Intellectual Property Rights (as
defined below) necessary or required for the conduct of the business of OSI and
its subsidiaries as presently conducted and as presently proposed to be
conducted as described in the OSI Form S-1 (such Intellectual Property Rights
being hereinafter collectively referred to as the "OSI IP RIGHTS"), and such
rights to use, possess, sell or license are sufficient for such conduct of such
business. As used herein, the term "INTELLECTUAL PROPERTY RIGHTS" means,
collectively, all worldwide industrial and intellectual property rights,
including, without limitation, patents, patent applications, patent rights,
trademarks, trademark registrations and applications therefor, trade dress
rights, trade names, service marks, service mark registrations and applications
therefor, copyrights, copyright registrations and applications therefor, mask
work rights, mask work registrations and applications therefor, licenses,
inventions, trade secrets, know-how, customer lists, supplier lists, proprietary
processes and formulae, software source and object code, algorithms, net lists,
architectures, structures, screen displays, layouts, inventions, development
tools, designs, blueprints, specifications, technical drawings (or similar
information in electronic format) and all documentation and media constituting,
describing or relating to the above, including, without limitation, manuals,
programmers' notes, memoranda and records.

          3.13.2 The execution, delivery and performance of this Agreement, the
Certificate of Merger and the consummation of the Merger and the other
transactions contemplated hereby and/or by OSI Ancillary Agreements will not
constitute a material breach of or default under any instrument, contract,
license or other agreement (other than any end-user license agreement granting
OSI a license to use any Off-the-Shelf Software which OSI does not incorporate
in, or market for use with, any OSI product) governing any OSI IP Right to which
OSI or any of its subsidiaries is a party (collectively, the "OSI IP RIGHTS
AGREEMENTS"), will not cause the forfeiture or termination of, or give rise to a
right of forfeiture or termination of, any OSI IP Right or materially impair the
right of OSI or the Surviving Corporation to use, possess, sell or license any
OSI IP Right or portion thereof. There are no royalties, honoraria, fees or
other payments payable by OSI to any third person by reason of the ownership,
use, possession, license, sale or disposition of any OSI IP Rights by OSI or any
of its subsidiaries.

          3.13.3 Neither the manufacture, marketing, license, sale, furnishing
or intended use of any product or service currently licensed, utilized, sold,
provided or furnished by OSI or any of its subsidiaries or currently under
development by OSI or any of its subsidiaries violates any license or agreement
between OSI and any third party or infringes or misappropriates any Intellectual
Property Right of any other party; and there is no pending or, to the knowledge
of OSI, threatened claim or litigation contesting the validity, ownership or
right of OSI or any of its subsidiaries to use, possess, sell, license or
dispose of any OSI IP Right nor, to the knowledge of OSI, is there any basis for
any such claim, nor has OSI received any notice asserting that any OSI IP Right
or the proposed use, sale, license or disposition thereof conflicts or will
conflict with the rights of any other party, nor, to the knowledge of OSI, is
there any basis for any such assertion.

          3.13.4 To the knowledge of OSI, no employee of OSI is in violation of
any provision of any employment contract, patent disclosure agreement,
non-competition agreement, non-solicitation agreement or any other contract or
agreement, or any restrictive covenant relating to the right of any such
employee to be employed by OSI or any of its subsidiaries, or to use trade
secrets or proprietary information of others, and the employment of such
employees by OSI or any of its subsidiaries does not subject OSI or any of its
subsidiaries to any liability.

          3.13.5 OSI has taken all reasonable and practicable steps, consistent
with industry standards, to protect, preserve and maintain the secrecy and
confidentiality of OSI IP Rights and all OSI's proprietary rights therein. All
officers, employees and consultants of OSI and its subsidiaries having access to
proprietary information have executed and delivered to OSI an agreement
regarding the protection of such proprietary information and the assignment of
inventions to OSI; and copies of the form of all such agreements have been
delivered to HNC's counsel. OSI has secured valid written assignments from all
consultants, contractors and employees who were involved in, or who contributed
to, the creation or development of any OSI IP Rights of the rights to such
contributions that OSI does not already own by operation of law. No current or
former employee, officer, director, consultant or independent contractor of OSI
or any subsidiary of OSI has any right, license, claim or interest whatsoever in
or with respect to any OSI IP Rights.

          3.13.6 Schedule 3.13.6 to the OSI Disclosure Letter contains a
complete list of (i) all worldwide registrations of any patents, copyrights,
mask works, trademarks and services marks with any governmental authority; 


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(ii) all applications, registrations, filings and other formal actions made or
taken pursuant to federal, state and foreign laws by OSI to secure, perfect or
protect its interest in OSI IP Rights, including, without limitation, all patent
applications, copyright applications, and applications for registration of
trademarks and service marks, (iii) all unregistered copyrights, trademarks and
service marks. All patents, and all registered trademarks, service marks and
copyrights held by OSI or its subsidiaries are valid, enforceable and
subsisting.

          3.13.7 Schedule 3.13.7 to the OSI Disclosure Letter contains a
complete list of (i) all licenses, sublicenses and other agreements as to which
OSI or any of its subsidiaries is a party and pursuant to which any person is
authorized to use any OSI IP Rights, and (ii) all licenses, sublicenses and
other agreements as to which OSI or any of its subsidiaries is a party and
pursuant to which OSI or any of its subsidiaries is authorized to use any third
party patents, trademarks or copyrights, including but not limited to software
("THIRD PARTY IP RIGHTS") which would be infringed by, or are incorporated in,
or form a part of, any product or service sold, licensed, distributed, provided
or marketed by OSI or any of its subsidiaries.

          3.13.8 Neither OSI nor any of its subsidiaries, nor any other party
acting on its or their behalf, has disclosed or delivered to any party, or
permitted the disclosure or delivery to any escrow agent or other party of any
OSI Source Code (as defined below). No event has occurred, and no circumstance
or condition exists, that (with or without notice or lapse of time) will, or
would reasonably be expected to, result in the disclosure or delivery to any
party of any OSI Source Code. Schedule 3.13.8 of the OSI Disclosure Letter
identifies each contract, agreement and instrument (whether written or oral)
pursuant to which OSI has deposited, or is or may be required to deposit, with
an escrowholder or any other party, any OSI Source Code and further describes
whether the execution of this Agreement or the consummation of the Merger or any
of the other transactions contemplated hereby, in and of itself, would
reasonably be expected to result in the release from escrow of any OSI Source
Code. As used in this Section 3.13.8, "OSI SOURCE CODE" means, collectively, any
source code, or any material portion or aspect of the source code, or any
material proprietary information or algorithm contained in or relating to any
source code, of any OSI IP Rights or any other product marketed by OSI.

          3.13.9 To OSI's knowledge, all software developed by OSI and licensed
by OSI or any of its subsidiaries to customers and all other products
manufactured, sold, licensed, leased or delivered by OSI or any of its
subsidiaries to customers and all services provided by OSI or any of its
subsidiaries to customers on or prior to the Closing Date conform in all
material respects to applicable contractual commitments, express and implied
warranties, product specifications and product documentation and to any
representations provided to customers and neither OSI nor any of its
subsidiaries has any material liability (and, to OSI's knowledge, there is no
basis for any present or future action, suit, proceeding, hearing,
investigation, charge, complaint, claim or demand against OSI or any of its
subsidiaries giving rise to any liability that could have a Material Adverse
Effect on OSI) for replacement or repair thereof or other damages in connection
therewith in excess of any reserves therefor reflected on the Balance Sheet.
During the six (6) month period ended on June 30, 1998, neither OSI nor any of
its subsidiaries has experienced any product or service warranty claims that
were materially greater than the amount of the same type of claims experienced
for the six (6) month period ended December 31, 1997. Since January 1, 1998,
neither OSI nor any of its subsidiaries has had any of its respective products
returned by a purchaser thereof except for normal warranty returns consistent
with past history and those returns that would not result in a reversal of any
material amount of revenue recognized by OSI on any of its financial statements
from such purchases. Neither OSI nor any of its subsidiaries is under any
liability or obligation, and no such outstanding claim has been made, with
respect to the return of inventory or products in the possession of customers,
licensees, distributors, retailers, or end-users, except such liabilities,
obligations and claims as, in the aggregate, do not exceed $100,000.

          3.13.10 All of the software products developed, owned, licensed and/or
marketed or distributed by OSI or any of its subsidiaries are (and, to OSI's
knowledge, any third party software included in any such Products is) Year 2000
Ready (as defined below) "YEAR 2000 READY" means, as applied to a software
product, that: (i) such software product has been tested by OSI; and (ii)
accurately processes date and/or time data (including, but not limited to,
calculating, comparing and sequencing) from, into, throughout and between the
20th and 21st centuries, the years 1999 and 2000, and leap year calculations
(year 2000 is a leap year); and (iii) when used in combination with other
information technology, such software product will accurately process date
and/or time data if the other information technology properly exchanges date
and/or time data with it.

     3.14 Compliance with Laws. OSI and each subsidiary of OSI has complied, and
is now and at the Closing Date will be in compliance in all material respects
with, all applicable federal, state, local or foreign laws, 


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ordinances, regulations, and rules, and all orders, writs, injunctions, awards,
judgments, and decrees applicable to it or to its assets, properties, and
business. OSI's products comply with all laws, rules and regulations and, to
OSI's knowledge, the use by OSI's customers of any product or products marketed
by OSI in accordance with such product's or products' documentation will not,
due to the structure, functions or performance of such product or products,
cause any of such customers to be in material violation of any law, rule or
regulation governing banks or credit unions. OSI holds all permits, licenses and
approvals from, and has made all filings with, government agencies and
authorities, that are necessary in connection with its present business
("GOVERNMENTAL PERMITS") and all such Governmental Permits are in full force and
effect. Neither OSI nor any of its subsidiaries has received any notice or other
communication from any Governmental Authority regarding (a) any actual or
possible violation of law or any Governmental Permit or any failure to comply
with any term or requirement of any Governmental Permit, or (b) any actual or
possible revocation, withdrawal, suspension, cancellation, termination or
modification of any Governmental Permit. Neither OSI nor any of its subsidiaries
has made any unlawful payment to foreign or domestic government officials or
employees or to foreign or domestic political parties or campaigns or violated
any provision of the Foreign Corrupt Practices Act of 1977, as amended.

     3.15 Certain Transactions and Agreements. None of the officers, directors,
employees or stockholders of OSI, nor any member of their immediate families,
has any direct or indirect ownership interest in any firm or corporation that
competes with, or does business with, or has any contractual arrangement with,
OSI (except with respect to any interest in less than one percent (1%) of the
stock of any corporation whose stock is publicly traded). None of said officers,
directors, employees or stockholders or any member of their immediate families,
is a party to, or otherwise directly or indirectly interested in, any contract
or informal arrangement with OSI (including but not limited to any agreement or
arrangement regarding the indemnification of such officer, director, employee or
stockholder or any agreement to advance expenses incurred by such officer,
director, employee or stockholder in connection with the defense of any claim,
suit or proceeding against such officer, director, employee or stockholder),
except for normal compensation for services as an officer, director or employee
thereof that have been disclosed to HNC and except for agreements related to the
purchase of the stock of OSI by, or the grant of OSI Options to, such persons.
None of said officers, directors, employees or stockholders or family members
has any interest in any property, real or personal, tangible or intangible
(including but not limited to any OSI IP Rights or any other Intellectual
Property Rights) that is used in or that pertains to the business of OSI, except
for the normal rights of a stockholder.

     3.16 Employees, ERISA and Other Compliance.

          3.16.1 OSI and its subsidiaries are in compliance in all material
respects with all applicable laws, agreements and contracts relating to
employment, employment practices, immigration, wages, hours, and terms and
conditions of employment, including, but not limited to, employee compensation
matters. A list of all employees, officers and consultants of OSI and its
subsidiaries and their current title and/or job description and compensation is
set forth on Schedule 3.16.1 to OSI Disclosure Letter. OSI and its subsidiaries
do not have any employment contracts or consulting agreements currently in
effect that are not terminable at will (other than agreements with the sole
purpose of providing for the confidentiality of proprietary information or
assignment of inventions).

          3.16.2 Neither OSI nor any of its subsidiaries (i) now is, nor has
ever been, subject to a union organizing effort, (ii) is subject to any
collective bargaining agreement with respect to any of its employees, (iii) is
subject to any other contract, written or oral, with any trade or labor union,
employees' association or similar organization or (iv) has any current labor
disputes. OSI and its subsidiaries have good labor relations, and have no
knowledge of any facts indicating that the consummation of the Merger or any of
the other transactions contemplated hereby will have a material adverse effect
on such labor relations, and have no knowledge that any of their key employees
intends to leave their employ. All of the employees of OSI and its subsidiaries
are legally permitted to be employed by OSI or its subsidiaries in the United
States of America in their current job capacities.

          3.16.3 Neither OSI nor any of its subsidiaries has any pension plan
which constitutes, or has since the enactment of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA") constituted, a "multiemployer plan"
as defined in Section 3(37) of ERISA. No pension plan of OSI or any of its
subsidiaries is subject to Title IV of ERISA.

          3.16.4 Schedule 3.16.4 to the OSI Disclosure Letter lists each
material employment, severance or other similar contract, arrangement or policy,
each employment, severance or other similar contract, arrangement or 


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policy with any officer or director of OSI, each "employee benefit plan" as
defined in Section 3(3) of ERISA and each plan or arrangement (written or oral)
providing for insurance coverage (including any self-insured arrangements),
workers' benefits, vacation benefits, severance benefits, disability benefits,
death benefits, hospitalization benefits, retirement benefits, deferred
compensation, profit-sharing, bonuses, stock options, stock purchase, phantom
stock, stock appreciation or other forms of incentive compensation or
post-retirement insurance, compensation or benefits for employees, consultants
or directors which is entered into, maintained or contributed to by OSI or any
of its subsidiaries and covers any employee or former employee of OSI or any of
its subsidiaries. Such contracts, plans and arrangements as are described in
this Section 3.16.4 are hereinafter collectively referred to as "OSI BENEFIT
ARRANGEMENTS." Each OSI Benefit Arrangement has been maintained in compliance in
all material respects with its terms and with the requirements prescribed by any
and all statutes, orders, rules and regulations that are applicable to such OSI
Benefit Arrangement, and each such OSI Benefit Arrangement that is an "employee
pension benefit plan" as defined in Section 3(2) of ERISA which is intended to
qualify under Section 401(a) of the Code has received a favorable determination
letter that such plan satisfied the requirements of the Tax Reform Act of 1986
(a copy of which letter(s) have been delivered to HNC and its counsel) or is
able to rely on a favorable opinion letter issued by the Internal Revenue
Service to the sponsor of the standardized prototype document on which such plan
is established. No action has been taken or omission has occurred since the most
recent favorable determination letter (or favorable opinion letter) issued with
respect to each such Employee Benefit Arrangement that could affect OSI's (or
such Employee Benefit Arrangement's) continued reliance on such favorable
determination (or opinion letter) or cause the Internal Revenue Service to
revoke such favorable determination. OSI has delivered to HNC or its counsel a
complete and correct copy and description of each OSI Benefit Arrangement. OSI
has timely filed and delivered to HNC and its counsel the three most recent
annual reports (Form 5500) for each OSI Benefit Arrangement that is an "employee
benefit plan" as defined under ERISA that is not exempt from the annual report
filing obligations under ERISA. OSI has never been a participant in any
"prohibited transaction", within the meaning of Section 406 of ERISA with
respect to any employee pension benefit plan (as defined in Section 3(2) of
ERISA) which OSI sponsors as employer or in which OSI participates as an
employer, which was not otherwise exempt pursuant to Section 408 of ERISA
(including any individual exemption granted under Section 408(a) of ERISA), or
which could result in any material excise tax under the Code. All contributions
due from OSI or any of its subsidiaries with respect to any of OSI Benefit
Arrangements have been made or have been accrued on OSI's financial statements,
(including without limitation the OSI Financial Statements) and no further
contributions will be due or will have accrued thereunder as of the Closing
Date. All individuals who, pursuant to the terms of any OSI Benefit Arrangement,
are entitled to participate in any such OSI Benefit Arrangement, are currently
participating in such OSI Benefit Arrangement or have been offered an
opportunity to do so and have declined in writing.

          3.16.5 There has been no amendment to, written interpretation or
announcement (whether or not written) by OSI relating to, or change in employee
participation or coverage under, any OSI Benefit Arrangement that would increase
materially the expense of maintaining such OSI Benefit Arrangement above the
level of the expense incurred in respect thereof for OSI's fiscal year ended
December 31, 1997. Each OSI Benefit Arrangement may be terminated and any
benefits distributed thereunder without causing material liquidation, surrender
or any other fees to be imposed on the OSI Benefit Arrangement, OSI or any
participant or beneficiary of such OSI Benefit Arrangement.

          3.16.6 The group health plans (as defined in Section 4980B(g) of the
Code) that benefit employees of OSI are in compliance, in all material respects,
with the continuation coverage requirements of Section 4980B of the Code as such
requirements affect OSI and its employees. As of the Closing Date, there will be
no material outstanding, uncorrected violations under the Consolidation Omnibus
Budget Reconciliation Act of 1985, as amended ("COBRA"), with respect to any of
OSI Benefit Arrangements, covered employees, or qualified beneficiaries that
could result in a Material Adverse Effect on OSI, or in a Material Adverse
Effect on HNC after the Effective Time.

          3.16.7 No benefit payable or which may become payable by OSI pursuant
to any OSI Benefit Arrangement or as a result of or arising under this Agreement
or the Agreement of Merger will constitute an "excess parachute payment" (as
defined in Section 280G(b)(1) of the Code) which is subject to the imposition of
an excise Tax under Section 4999 of the Code or which would not be deductible by
reason of Section 280G of the Code. OSI is not a party to any: (a) agreement
with any executive officer or other key employee thereof (i) the benefits of
which are contingent, or the terms of which are materially altered, upon the
occurrence of a transaction involving OSI in the nature of the Merger or any of
the other transactions contemplated by this Agreement, the Agreement of Merger
or any OSI Ancillary Agreement, (ii) providing any term of employment or
compensation guarantee, or (iii) providing severance benefits or other benefits
after the termination of employment of such employee regardless of the reason
for 


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such termination of employment; or (b) agreement or plan, including, without
limitation, any stock option plan, stock appreciation rights plan or stock
purchase plan, any of the benefits of which will be increased, or the vesting of
benefits of which will be accelerated, by the occurrence of the Merger or any of
the other transactions contemplated by this Agreement, the Certificate of Merger
or any OSI Ancillary Agreement, or the value of any of the benefits of which
will be calculated on the basis of any of the transactions contemplated by this
Agreement, the Certificate of Merger or any OSI Ancillary Agreement.

          3.16.8 To OSI's knowledge, no employee, consultant or independent
contractor of OSI or any subsidiary of OSI: (a) is in material violation of any
term or covenant of any employment contract, patent disclosure agreement,
noncompetition agreement or any other contract or agreement with any other party
by virtue of such employee's, consultant's, or independent contractor's being
employed by, or performing services for, OSI or such subsidiary or using trade
secrets or proprietary information of others, or that would be likely to have a
Material Adverse Effect on OSI; or (b) has developed any technology, software or
other copyrightable, patentable, or otherwise proprietary work for OSI or any of
its subsidiaries that is subject to any agreement under which such employee,
consultant or independent contractor has assigned or otherwise granted to any
third party any rights (including without limitation Intellectual Property
Rights) in or to such technology, software or other copyrightable, patentable or
otherwise proprietary work or any Intellectual Property Rights related thereto.
To OSI's knowledge, the employment of any employee of OSI or any subsidiary of
OSI does not subject OSI or any such subsidiary to any liability to any third
party.

     3.17 Corporate Documents. OSI has made available to HNC for examination all
documents and information listed in the OSI Disclosure Letter or in any schedule
thereto or in any other exhibit or schedule called for by this Agreement which
have been requested by HNC's legal counsel, including, without limitation, the
following: (a) copies of OSI's Certificate of Incorporation and Bylaws as
currently in effect; (b) OSI's Minute Book containing all records of all
proceedings, consents, actions, and meetings of OSI's stockholders, board of
directors and any committees thereof; (c) OSI's stock ledger and journal
reflecting all stock issuances and transfers; (d) all permits, orders, and
consents issued by any regulatory agency with respect to OSI, or any securities
of OSI, and all applications for such permits, orders, and consents; and (e) all
the OSI Material Agreements.

     3.18 No Brokers. Neither OSI nor any affiliate of OSI is obligated for the
payment of any fees or expenses of any investment banker, broker, finder or
similar party in connection with the origin, negotiation or execution of this
Agreement or the Agreement of Merger or in connection with the Merger or any
other transaction contemplated by this Agreement, and HNC will not incur any
liability to any such investment banker, broker, finder or similar party as a
result of, this Agreement, the Merger or any act or omission of OSI, any of its
employees, officers, directors, stockholders, agents or affiliates.

     3.19 Books and Records.

     3.19.1 The books, records and accounts of OSI (a) are in all material
respects true, complete and correct, (b) have been maintained in accordance with
good business practices on a basis consistent with prior years, (c) are stated
in reasonable detail and accurately and fairly reflect the transactions and
dispositions of the assets of OSI, and (d) accurately and fairly reflect the
basis for the OSI Financial Statements.

     3.19.2 OSI has devised and maintains a system of internal accounting
controls sufficient to provide reasonable assurances that: (a) transactions are
executed in accordance with management's general or specific authorization; (b)
transactions are recorded as necessary (i) to permit preparation of financial
statements in conformity with generally accepted accounting principles or any
other criteria applicable to such statements, and (ii) to maintain
accountability for assets; and (c) the amount recorded for assets on the books
and records of OSI is compared with the existing assets at reasonable intervals
and appropriate action is taken with respect to any differences.

     3.20 Insurance. During the prior two years, OSI and its subsidiaries have
maintained, and now maintain, policies of insurance and bonds of the type and in
amounts customarily carried by persons conducting businesses or owning assets
similar in type and size to those of OSI and its subsidiaries. There is no
material claim pending under any of such policies or bonds as to which coverage
has been questioned, denied or disputed by the underwriters of such policies or
bonds. All premiums due and payable under all such policies and bonds have been
timely paid and OSI and its subsidiaries are otherwise in compliance with the
terms of such policies and bonds. OSI has no knowledge of any threatened
termination of any of such policies. All policies of insurance now held by OSI
or any of 


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its subsidiaries are set forth in Schedule 3.20 to OSI Disclosure Letter,
together with the name of the insurer under each policy and the policy coverage
amount.

     3.21 Environmental Matters.

          3.21.1 OSI and its subsidiaries are in compliance with all applicable
Environmental Laws (as defined below), which compliance includes the possession
by OSI and its subsidiaries of all permits and other governmental authorizations
required under applicable Environmental Laws, and compliance with the terms and
conditions thereof. Neither OSI nor any of its subsidiaries has received any
notice or other communication (in writing or otherwise), whether from a
governmental body, citizens groups, employee or otherwise, that alleges that OSI
or any of its subsidiaries is not in compliance with any Environmental Law, and
there are no circumstances that may prevent or interfere with the compliance by
OSI or any of its subsidiaries with any current Environmental Law in the future.
To OSI's knowledge, no current or prior owner of any property leased or
controlled by OSI or any of its subsidiaries has received any notice or other
communication (in writing or otherwise), whether from a government body,
citizens group, employee or otherwise, that alleges that such current or prior
owner or OSI or any of its subsidiaries is not in compliance with any
Environmental Law. All governmental authorizations currently held by OSI or any
of its subsidiaries pursuant to any Environmental Law (if any) are identified in
Schedule 3.21 of OSI Disclosure Letter.

          3.21.2 For purposes of this Section 3.21: (i) "ENVIRONMENTAL LAW"
means any federal, state, local or foreign statute, law regulation or other
legal requirement relating to pollution or protection of human health or the
environment (including ambient air, surface water, ground water, land surface or
subsurface strata), including any law or regulation relating to emissions,
discharges, releases or threatened releases of Materials of Environmental
Concern, or otherwise relating to the manufacture, processing, distribution,
use, treatment, storage, disposal, transport or handling of Materials of
Environmental Concern; and (ii) "MATERIAL OF ENVIRONMENTAL CONCERN" include
chemicals, pollutants, contaminants, wastes, toxic substances, petroleum and
petroleum products and any other substance that is currently regulated by an
Environmental Law or that is otherwise a danger to health, reproduction or the
environment.

     3.22 Voting Agreement; Proxies. Those persons and/or entities who are
current holders of issued and outstanding shares of OSI Common Stock and/or OSI
Preferred Stock who are listed in that certain letter from OSI to HNC dated as
of the Agreement Date have executed voting agreements in the form provided by
HNC ("VOTING AGREEMENTS"), and the Irrevocable Proxies attached thereto as
Exhibit A ("PROXIES").

     3.23 Vote Required. The affirmative vote of the holders of: (a) a majority
of the shares of OSI Common Stock that are issued and outstanding on the Record
Date (as defined below) voting together as a single class, plus (b) a majority
of the shares of OSI Preferred Stock that are issued and outstanding on the
Record Date voting together as a single class, plus (c) a majority of the shares
of OSI Series B Stock that are issued and outstanding on the Record Date, voting
together as a single series, plus (c) a majority of the shares of OSI Series C
Stock that are issued and outstanding on the Record Date, voting together as a
single series, is the only vote of the holders of any of the shares of OSI's
capital stock necessary to approve this Agreement, the Merger, the Certificate
of Merger and the other transactions contemplated by this Agreement. As used in
this Section 3.23, the term "RECORD DATE" means the record date for determining
those stockholders of OSI who are entitled to vote at OSI Stockholders' Meeting
or at any action take by written consent of OSI's stockholders without a meeting
under applicable law.

     3.24 Board Approval. The Board of Directors of OSI has unanimously (i)
approved this Agreement, the Certificate of Merger and the Merger, and (ii)
determined that the Merger is in the best interests of the stockholders of OSI
and is on terms that are fair to such stockholders.

     3.25 No Existing Discussions. Neither OSI nor any director, officer,
stockholder, employee or agent of OSI is engaged, directly or indirectly, in any
discussions or negotiations with any third party relating to any Alternative
Transaction (as defined in Section 5.9).

     3.26 Accounting Matters. To OSI's knowledge, neither OSI nor any of its
affiliates has taken or agreed to, or plans to, take any action that would
prevent HNC from accounting for the Merger as a "pooling of interests."

     3.27 Tax-Free Reorganization. OSI has not taken any action that would cause
the Merger not to qualify as a tax-free reorganization under Section 368(a) of
the Code.


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     3.28 Disclosure.

          (a)  Neither this Agreement, its exhibits and schedules and the OSI
Disclosure Letter, nor any of the certificates to be delivered by OSI to HNC
under this Agreement, taken together, contains any untrue statement of a
material fact or omits to state any material fact necessary in order to make the
statements contained herein and therein, in light of the circumstances under
which such statements were made, not misleading.

          (b)  None of the information supplied or to be supplied by or on
behalf of OSI for inclusion or incorporation by reference in the Form S-4 will,
at the time the Form S-4 becomes effective under the 1933 Act, contain any
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary in order to make the statements therein, in
the light of the circumstances under which they are made, not misleading. None
of the information supplied or to be supplied by or on behalf of OSI for
inclusion or incorporation by reference in the Prospectus/Proxy Statement to be
filed with the SEC as part of the Form S-4 will, at the time the
Prospectus/Proxy Statement is mailed to the stockholders of OSI, at the time of
OSI Stockholders' Meeting or as of the Effective Time, contain any untrue
statement of a material fact or omit to state any material fact required to be
stated therein or necessary in order to make the statements therein, in the
light of the circumstances under which they are made, not misleading.

                                    ARTICLE 4

                  REPRESENTATIONS AND WARRANTIES OF HNC AND SUB

     HNC and Sub hereby represent and warrant to OSI that, except as set forth 
in the letter addressed to OSI from HNC and dated as of the Agreement Date which
has been delivered by HNC to OSI concurrently herewith (the "HNC DISCLOSURE
LETTER"; for all purposes of this Agreement (including without limitation
Article 8), the statements contained in the HNC Disclosure Letter and its
schedules shall also be deemed to be representations and warranties made and
given by HNC under Article 4 of this Agreement), each of the following
representations, warranties and statements in this Article 4 are true and
correct as of the Agreement Date and will be true and correct on and as of the
Closing Date:

     4.1  Organization and Good Standing. HNC is a corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware,
and has the corporate power and authority to own, operate and lease its
properties and to carry on its business as now conducted and as proposed to be
conducted and is qualified to transact business, and is in good standing, in
each jurisdiction in which its failure to be so qualified would have a Material
Adverse Effect on HNC. Sub is a corporation duly organized, validly existing and
in good standing under the laws of the State of Delaware, and has the corporate
power and authority to own, operate and lease its properties and to carry on its
business and Sub is qualified to transact business, and is in good standing, in
each jurisdiction in which its failure to be so qualified would have a Material
Adverse Effect on HNC. HNC has delivered to OSI true and correct copies of the
currently effective Certificate of Incorporation and Bylaws of HNC and Sub, each
as amended to date. Neither HNC nor Sub is in violation of its Certificate of
Incorporation or Bylaws. HNC owns all of the issued and outstanding stock of
Sub.

     4.2  Power, Authorization and Validity.

          4.2.1 Power and Authority. HNC has all requisite corporate power and
authority to enter into, execute, deliver and perform its obligations under,
this Agreement and all the HNC Ancillary Agreements and to issue the shares of
HNC Common Stock and HNC Options in the Merger in accordance with this
Agreement. The execution, delivery and performance of this Agreement and each of
the HNC Ancillary Agreements by HNC have been duly and validly approved and
authorized by all necessary corporate action of HNC's Board of Directors in
compliance with the Delaware General Corporation Law and HNC's Certificate of
Incorporation and Bylaws, each as amended to date. Sub has all requisite
corporate power and authority to execute, deliver and perform its obligations
under, this Agreement and all the Sub Ancillary Agreements. The execution,
delivery and performance of this Agreement and each of the Sub Ancillary
Agreements by Sub have been duly and validly approved and authorized by all
necessary corporate action of Sub's Board of Directors and sole stockholder in
compliance with the Delaware General Corporation Law and Sub's Certificate of
Incorporation and Bylaws, each as amended to date.


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          4.2.2 No Consents. No consent, approval, order or authorization of, or
registration, declaration or filing with, any court, administrative agency,
commission or other Governmental Authority is necessary or required to be made
or obtained by HNC or Sub to enable HNC and Sub to enter into, and to perform
their respective obligations under, this Agreement, the HNC Ancillary Agreements
or the Sub Ancillary Agreements, respectively, and for Sub to consummate the
Merger, except for: (a) the filing with the SEC of the Form S-4 and the
Prospectus/Proxy Statement and the SEC's declaring the Form S-4 effective under
the 1933 Act; (b) the filing by HNC of such reports and information with the SEC
under the 1934 Act and the rules and regulations promulgated by the SEC
thereunder, as may be required in connection with this Agreement, the Merger and
the other transactions contemplated by this Agreement; (c) the filing of the
Certificate of Merger with the Delaware Secretary of State to effect the Merger;
(d) such filings and notifications as may be necessary under the HSR Act and the
expiration of applicable waiting periods under the HSR Act; (e) such other
filings as may be required by the Nasdaq Stock Market with respect to the Merger
and the other transactions contemplated by this Agreement, and the issuance of
the shares of HNC Common Stock and the HNC Options to be issued by HNC in the
Merger; and (f) such other filings, if any, as may be required in order for HNC
to comply with applicable federal and state securities laws.

          4.2.3 Enforceability. This Agreement and the HNC Ancillary Agreements
are, or when executed by HNC will be, valid and binding obligations of HNC,
enforceable in accordance with their respective terms, except as to the effect,
if any, of (a) applicable bankruptcy and other similar laws affecting the rights
of creditors generally and (b) rules of law and equity governing specific
performance, injunctive relief and other equitable remedies. This Agreement and
the Sub Ancillary Agreements are, or when executed by Sub will be, valid and
binding obligations of Sub, enforceable in accordance with their respective
terms, except as to the effect, if any, of (a) applicable bankruptcy and other
similar laws affecting the rights of creditors generally and (b) rules of law
and equity governing specific performance, injunctive relief and other equitable
remedies.

     4.3  Capitalization of HNC.

          4.3.1 Stock. The authorized capital stock of HNC consists entirely of
50,000,000 shares of HNC Common Stock, $0.001 par value per share, and 4,000,000
shares of Preferred Stock, $0.01 par value per share (the "HNC PREFERRED
STOCK"). At the close of business on August 21, 1998, 25,773,374 shares of HNC
Common Stock were issued and outstanding and 100 shares of HNC Common Stock were
held as treasury shares. No shares of HNC Preferred Stock are issued or
outstanding. Except as expressly described above in this Section 4.3.1, as of
August 21, 1998 no other shares of HNC Common Stock were outstanding. All of the
outstanding shares of HNC Common Stock have been validly issued and are fully
paid and non-assessable. No fractional shares of HNC Common Stock or HNC
Preferred Stock are outstanding. As of the Agreement Date, the authorized
capital stock of Sub consists of 100 shares of Common Stock, $0.01 par value per
share, of which 100 shares are validly issued and outstanding, all of which
shares have been fully paid and non-assessable and are owned by HNC.

          4.3.2 Options. As of September 4, 1998: (i) an aggregate of 6,069,058
shares of HNC Common Stock were reserved for future issuance pursuant to stock
options granted and outstanding under (a) HNC's 1987 Stock Option Plan, as
amended, (b) HNC's 1995 Equity Incentive Plan, as amended, (c) HNC's 1998 Stock
Option Plan, as amended, (d) HNC's 1995 Directors Stock Option Plan, (e) the
1992 Risk Data Corporation Stock Option Plan and non-plan options of Risk Data
Corporation assumed by HNC, (f) the options granted by Retek Distribution
Corporation and assumed by HNC, (g) the CompReview, Inc. 1995 Stock Option Plan
assumed by HNC, and (h) the Practical Control Systems Technologies, Inc. 1998
Stock Option Plan assumed by HNC and (ii) 187,332 shares of HNC Common Stock
were reserved for future issuance (and were unissued) under HNC's 1995 Employee
Stock Purchase Plan (the "HNC STOCK PURCHASE PLAN"); (iii) 681,410 shares of HNC
Common Stock were reserved and available for future issuance under (but were not
subject to issuance under granted and outstanding stock options granted under)
the stock option plans described in clause (i) of this Section 4.3.2.

          4.3.3 No Other Options. As of the Agreement Date: (i) there are no
outstanding options or rights to purchase shares of HNC Common Stock, other than
the options, referred to in Section 4.3.2, certain options granted between
September 4, 1998 and the Agreement Date under the stock option plans referred
to in Section 4.3.2 and any rights to purchase shares under the HNC Stock
Purchase Plan; and (ii) HNC is not obligated to issue any shares of HNC Common
Stock or any rights to acquire shares of HNC Common Stock, other than pursuant
to (A) the options and stock purchase plan referred to in Section 4.3.2, certain
options granted between September 4, 1998 and the Agreement Date under the stock
option plans referred to in Section 4.3.2 and shares issued under the HNC Stock
Purchase Plan and (C) the terms of this Agreement or any other agreement
referred to in this Agreement.


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          4.3.4 Convertible Notes. As of the Agreement Date, the Company had
outstanding 4.75% Convertible Subordinated Notes due 2003 in the aggregate
principal amount of $100,000,000.

     4.4  No Conflict. Neither the execution and delivery of this Agreement nor
any of the HNC Ancillary Agreements or Sub Ancillary Agreements by HNC or Sub,
nor the consummation of the transactions contemplated hereby or thereby, will
conflict with, or (with or without notice or lapse of time, or both) result in a
termination, breach, impairment or violation of: (i) any provision of the
Certificate of Incorporation or Bylaws or other charter documents of HNC or Sub
as currently in effect; (ii) any federal, state, local or foreign judgment,
writ, decree, order, statute, rule or regulation applicable to HNC or Sub or any
of their respective assets or properties; or (iii) any material instrument,
agreement or contract to which HNC or any of its subsidiaries (if any) is a
party or by which HNC or any of its subsidiaries (if any) or any of their
respective assets or properties are bound that has been filed by the SEC as an
exhibit to (a) HNC's annual report on Form 10-K for its fiscal year ended
December 31, 1997, as amended by any subsequent Form 10-K/As filed by HNC (the
"1997 HNC 10-K") or (b) in any other HNC SEC Document (as defined in Section
4.5) filed with the SEC under the 1933 Act or the 1934 Act filed after February
17, 1998, the date on which the 1997 HNC 10-K was first filed with the SEC (the
"HNC 10-K FILING DATE"), and prior to the Agreement Date.

     4.5  SEC Filings.

          (a)  HNC has made available to OSI accurate and complete copies of
each report, registration statement (on a form other than Form S-8) and
definitive proxy statement (excluding copies of exhibits) filed by HNC with the
SEC between the HNC 10-K Filing Date and the Agreement Date pursuant to the 1933
Act or the 1934 Act, including without limitation the HNC 1997 10-K
(collectively, the "HNC SEC DOCUMENTS"). As of the time it was filed with the
SEC (or, if amended or superseded by a subsequent filing prior to the Agreement
Date, then on the date of such subsequent filing): (i) each of the HNC SEC
Documents complied in all material respects with the applicable requirements of
the 1933 Act or the 1934 Act (as the case may be); and (ii) none of the HNC SEC
Documents contained any untrue statement of a material fact or omitted to state
a material fact required to be stated therein or necessary in order to make the
statements therein, in the light of the circumstances under which they were
made, not misleading.

          (b)  The consolidated financial statements (including any related
notes) contained in the HNC SEC Documents: (i) complied as to form in all
material respects with the published rules and regulations of the SEC applicable
thereto; (ii) were prepared in accordance with generally accepted accounting
principles applied on a consistent basis throughout the periods covered (except
as may be indicated in the notes to such financial statements and, in the case
of unaudited statements, as permitted by Form 10-Q of the SEC, and except that
unaudited financial statements may not contain footnotes and are subject to
normal and recurring year-end audit adjustments; and (iii) fairly present the
consolidated financial position of HNC and its subsidiaries as of the respective
dates thereof and the consolidated results of operations and cash flows of HNC
and its subsidiaries for the periods covered thereby.

          4.6  Validity of Shares. The shares of HNC Common Stock to be issued
pursuant to the Merger will, when issued: (a) be duly authorized, validly
issued, fully paid and non-assessable, and (b) will be free and clear of any
liens and encumbrances created by HNC except for applicable restrictions on
transfer imposed by Rule 145 promulgated under the 1933 Act, under applicable
"blue sky" state securities laws and under any OSI Affiliate Agreement to be
executed pursuant to this Agreement.

          4.7  No Brokers. Neither HNC nor Sub, nor any of their respective
affiliates is obligated for the payment of any fees or expenses of any
investment banker, broker, finder or similar party in connection with the
origin, negotiation or execution of this Agreement or the Agreement of Merger or
in connection with any other transaction contemplated hereby or thereby for
which OSI or its stockholders will incur personal liability.

          4.8  Litigation. There is no action, claim, suit, arbitration,
mediation, proceeding, claim or investigation pending against HNC or any of its
subsidiaries (or to HNC's or Sub's knowledge, against any officer, director,
employee or agent of HNC or any of its subsidiaries in their capacity as such or
relating to their employment, services or relationship with HNC or such
subsidiary) before any court, administrative agency or arbitrator that, if
determined adversely to HNC or such subsidiary (or any such officer, director,
employee or agent) would have a Material Adverse Effect on HNC, or that could
prevent, enjoin or materially alter or delay the consummation of the Merger or
any other material transaction contemplated by this Agreement, nor, to HNC's
knowledge, has any such action, suit, proceeding, arbitration, mediation, claim
or investigation been threatened. There is no judgment, decree, injunction, 


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rule or order of any governmental entity or agency, court or arbiter outstanding
against HNC or any of its subsidiaries, that would (a) have a Material Adverse
Effect on HNC or any of its subsidiaries, taken as a whole or (b) that would
prevent or enjoin HNC or Sub from consummating the Merger.

     4.9  Tax-Free Reorganization. Neither HNC nor Sub has taken any action that
would cause the Merger not to qualify as a tax-free reorganization under Section
368(a) of the Code.

     4.10 No Material Adverse Change. Since June 30, 1998 there has not been any
Material Adverse Change (as defined in Article 1) in the financial condition,
properties, assets, liabilities, business, results of operations, operations of
HNC and its subsidiaries, taken as a whole (where, for purposes of this Section
4.10, the parties agree that a decrease in the market price of HNC Common Stock
shall not, of itself, constitute a Material Adverse Change of the type described
in this Section 4.10).

                                    ARTICLE 5

                          PRE-CLOSING COVENANTS OF OSI

     During the time period from the Agreement Date until the earlier to occur 
of (i) the Effective Time or (ii) the termination of this Agreement in
accordance with Article 10, OSI covenants and agrees with HNC as follows:

     5.1  Advice of Changes. OSI will promptly advise HNC in writing (a) of any
event occurring subsequent to the Agreement Date that would render any
representation or warranty of OSI contained in Article 3 of this Agreement, if
made on or as of the date of such event or the Closing Date, untrue or
inaccurate in any material respect and (b) of any Material Adverse Change in
OSI's business, results of operations, or financial condition. OSI will deliver
to HNC within fifteen (15) days after the end of each monthly accounting period
ending after the Agreement Date and before the Closing Date, an unaudited
balance sheet and statement of operations, which financial statements will be
prepared in the ordinary course of OSI's business, consistent with its past
practices in accordance with OSI's books and records and generally accepted
accounting principles.

     5.2  Maintenance of Business. OSI will carry on and preserve its business
and its relationships with customers, suppliers, employees and others in
substantially the same manner as it has prior to the Agreement Date. If OSI
becomes aware of a material deterioration in the relationship with any key
customer, key supplier or key employee, it will promptly bring such information
to the attention of HNC in writing.

     5.3  Conduct of Business. OSI will continue to conduct its business and
maintain its business relationships in the ordinary and usual course and neither
OSI nor any of its subsidiaries will, without the prior written consent and
approval (which may be given verbally to be promptly followed by written
confirmation) of the President or Chief Financial Officer of HNC:

          (a)  borrow or lend any money, other than reasonable advances to
employees for bona fide travel and expenses that are incurred in the ordinary
course of OSI's business consistent with OSI's past practices;

          (b)  enter into any transaction or agreement not in the ordinary
course of OSI's business;

          (c)  grant any lien, security interest, other encumbrance on any of
its assets;

          (d)  sell, transfer or dispose of any of its assets except in the
ordinary course of OSI's business consistent with OSI's past practices;

          (e)  enter into any material lease or contract for the purchase or
sale of any property, whether real or personal, tangible or intangible;

          (f)  pay any bonus, increased salary or special remuneration to any
officer, director, employee or consultant (except for normal salary increases
and bonus payments that are consistent with OSI's past practices and, in each
case, not to exceed 10% of such officer's, employee's or consultant's base
annual compensation, and except pursuant to existing arrangements previously
disclosed to and approved in writing by HNC), enter into any new 


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employment or consulting agreement with any such person or enter into any
indemnification agreement or agreement to advance expenses of defending any
claim, suit or proceeding with any such person;

          (g)  change any of its accounting methods;

          (h)  declare, set aside or pay any cash or stock dividend or other
distribution in respect of its capital stock, redeem, repurchase or otherwise
acquire any of its capital stock or other securities, pay or distribute any cash
or property to any stockholder or securityholder of OSI or make any other cash
payment to any stockholder or securityholder of OSI that is unusual,
extraordinary, or not made in the ordinary course of OSI's business consistent
with its past practices;

          (i)  amend or terminate any contract, agreement or license to which
OSI or any of its subsidiaries is a party except for those amended or terminated
in the ordinary course of OSI's business, consistent with its past practices,
and which (i) were not filed as exhibits to the OSI Form S-1 or (ii) would not,
if so amended or terminated, have any material impact on OSI's business or
financial condition;

          (j)  guarantee or act as a surety for any obligation of any third
party;

          (k)  waive or release any material right or claim except in the
ordinary course of OSI's business, consistent with OSI's past practice;

          (l)  issue, sell, create or authorize any shares of its capital stock
of any class or series or any other of its securities, or issue, grant or create
any warrants, obligations, subscriptions, options, convertible securities, or
other commitments to issue shares of its capital stock or securities ultimately
exchangeable for, or convertible into, shares of its capital stock; provided,
however, that notwithstanding the foregoing, OSI (a) may issue shares of OSI
Common Stock issuable upon the exercise of OSI Options that are outstanding on
the Agreement Date in accordance with their terms as now in effect and (b) may
grant stock options under the OSI 1994 Option Plan in the ordinary course of
OSI's business to OSI employees and consultants in amounts, at exercise prices
and on such terms, and to such persons, as are consistent with OSI's past
practices for granting options to employees; provided further, that OSI will not
grant any stock options under the OSI 1998 Option Plan;

          (m)  subdivide or split or combine or reverse split the outstanding
shares of its capital stock of any class or series or enter into any
recapitalization affecting the number of outstanding shares of its capital stock
of any class or series or affecting any other of its securities;

          (n)  merge, consolidate or reorganize with, or acquire, or enter into
any other business combination with, any corporation, partnership, limited
liability company or any other entity or enter into any negotiations,
discussions or agreement for such purpose;

          (o)  amend its Certificate of Incorporation or Bylaws;

          (p)  license any of its technology or Intellectual Property Rights
except for licenses of products made in the ordinary course of OSI's business,
or acquire any Intellectual Property Rights (or any license thereto) from any
third party except for any such license obtained in the ordinary course of OSI's
business;

          (q)  materially change any insurance coverage or issue any
certificates of insurance;

          (r)  agree to any audit assessment by any tax authority or file any
federal or state income or franchise tax return unless copies of such returns
have first been delivered to HNC for its review prior to filing;

          (s)  modify or change the exercise or conversion rights or exercise or
purchase prices of any capital stock of OSI, any OSI stock options, warrants or
other OSI securities, or accelerate or otherwise modify (i) the right to
exercise any option, warrant or other right to purchase any capital stock or
other securities of OSI or (ii) the vesting or release of any shares of capital
stock or other securities of OSI from any repurchase options or rights of
refusal held by OSI or any other party or any other restrictions unless such
accelerations/modifications are expressly required and mandated by the terms of
a formal written agreement or plan that was entered into prior to the execution


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of this Agreement by HNC and OSI and not in contemplation of the Merger or other
transactions contemplated by this Agreement;

          (t)  purchase or otherwise acquire, or sell or otherwise dispose of:
(i) any shares of HNC Common Stock or other HNC securities or (ii) any
securities whose value is derived from or determined with reference to, in whole
or in part, the value of HNC stock or other HNC securities; or

          (u)  agree to do any of the things described in the preceding clauses
5.3(a) through 5.3(t).

     5.4  Approval of OSI's Stockholders. OSI shall hold the OSI Stockholders'
Meeting or shall solicit the written consent of its stockholders at the earliest
practicable date (consistent with SEC rules for Form S-4 registration
statements) after the Form S-4 is declared effective by the SEC to submit this
Agreement, the Merger and approval of any related agreements or transactions for
the consideration and approval of the stockholders of OSI, which approval shall
be recommended by OSI's Board of Directors (the vote taken at such OSI
Stockholders' meeting or by the solicitation of such written consent of the
stockholders of OSI is hereinafter referred to as the "OSI STOCKHOLDER VOTE").
Such OSI's Stockholders' Meeting or action by written consent shall be called,
held and conducted, and any proxies or written consents shall be solicited, in
compliance with OSI's Certificate of Incorporation and Bylaws, both as amended,
and in compliance with applicable law. OSI will cause the Prospectus/Proxy
Statement from the Form S-4 to be delivered to each stockholder of OSI at least
ten (10) days prior to the taking of OSI Stockholder Vote. OSI will not put any
proposal up for the vote of its stockholders (as part of the OSI Stockholder
Vote or otherwise) other than the proposal to approve this Agreement and the
Merger, without obtaining HNC's prior written consent to do so, which consent
will not be unreasonably withheld, consistent with the provisions, purposes and
intent of this Agreement.

     5.5  Proxy Statement. OSI will be solely responsible for any statement,
information or omission in the Form S-4 and the Prospectus/Proxy Statement
relating to OSI or its affiliates.

     5.6  Regulatory Approvals. OSI will promptly execute and file, or join in
the execution and filing, of any application, notification (including without
limitation any notification or provision of information, if any, that may be
required under the HSR Act) or any other document that may be necessary in order
to obtain the authorization, approval or consent of any Governmental Authority,
whether federal, state, local or foreign, which may be reasonably required, or
which HNC may reasonably request, in connection with the consummation of the
Merger or any other transactions contemplated by this Agreement or any OSI
Ancillary Agreement. OSI will use its diligent efforts to obtain, and to
cooperate with HNC to promptly obtain, all such authorizations, approvals and
consents. OSI will use its best efforts to cooperate with and assist HNC to
promptly prepare and file the Form S-4 and the Prospectus/Proxy Statement with
the SEC, to promptly respond to any SEC comments regarding the Form S-4 or the
Prospectus/Proxy Statement, to cause the SEC to declare the Form S-4 effective.

     5.7  Necessary Consents. OSI will use its diligent efforts to obtain such
consents and authorizations of third parties, give notices to third parties and
take such other actions as may be necessary or appropriate in addition to those
set forth in the foregoing Sections of this Article 5 in order to effect the
consummation of the Merger and the other transactions contemplated by this
Agreement and to enable OSI to carry on its business after the Effective Time
substantially as such business was conducted by OSI prior to the Effective Time.

     5.8  Litigation. OSI will notify HNC in writing promptly after learning of
any claim, action, suit, arbitration, mediation, proceeding or investigation by
or before any court, arbitrator or arbitration panel, board or governmental
agency, initiated by or against it, or known by it to be threatened against OSI
or any of its subsidiaries or any of their officers, directors, employees or
stockholders in their capacity as such.

     5.9  No Other Negotiations. During the time period commencing on the
Agreement Date and ending on the earlier to occur of (a) termination of this
Agreement in accordance with the provisions of Article 10 or (b) consummation of
the Merger, OSI will not, and OSI will not authorize, encourage or permit any
officer, director, employee, stockholder, affiliate or agent of OSI or any other
person on OSI's or their behalf to, directly or indirectly: (i) solicit,
initiate, encourage or induce the making, submission or announcement of, any
offer or proposal from any party concerning any Alternative Transaction (as
defined below) or take any other action that could reasonably be expected to
lead to an Alternative Transaction or a proposal therefor; (ii) consider any
inquiry, offer or proposal received from any party concerning any Alternative
Transaction; (iii) furnish any information regarding OSI to any 


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person or entity in connection with or in response to any inquiry, offer or
proposal for or regarding any Alternative Transaction; (iv) participate in any
discussions or negotiations with any person or entity with respect to any
Alternative Transaction; (v) otherwise cooperate with, facilitate or encourage
any effort or attempt by any person or entity (other than HNC) to effect any
Alternative Transaction; or (vi) execute, enter into or become bound by any
letter of intent, agreement, commitment or understanding between OSI and any
third party that is related to, provides for or concerns any Alternative
Transaction. During the foregoing time period identified in the preceding
sentence, OSI will promptly disclose to HNC any inquiries or proposals for
Alternative Transactions received by OSI from any third parties, which
disclosure shall include the identity of the party making the inquiry or
proposal and the terms of any proposal that are received. As used herein, the
term "ALTERNATIVE TRANSACTION" means (i) any commitment, agreement or
transaction involving or providing for the possible disposition of all or any
substantial portion of OSI's business, assets or capital stock, whether by way
of merger, consolidation, sale of assets, sale of stock, tender offer and/or any
other form of business combination or (ii) any initial public offering of
capital stock or other securities of OSI pursuant to a registration statement
filed under the 1933 Act.

     5.10 Access to Information. Until the Closing, OSI will allow HNC and its
agents, during normal business hours and on reasonable advance notice (which may
be given orally), access to the files, books, records, personnel and offices of
OSI, including, without limitation, any and all information relating to OSI's
taxes, commitments, contracts, leases, licenses, and real, personal and
intangible property and financial condition, subject to the terms of the Mutual
Confidentiality and Non-Disclosure Agreement between OSI and HNC (the
"CONFIDENTIALITY AGREEMENT"). OSI will cause its accountants to cooperate with
HNC and its agents in making available all financial information reasonably
requested by HNC, including without limitation the right to examine all working
papers pertaining to all financial statements prepared or audited by such
accountants. OSI will also use its diligent efforts to cause its accountants to
assist and cooperate with HNC in the preparation of the Form S-4.

     5.11 Satisfaction of Conditions Precedent. OSI will use its best efforts to
satisfy or cause to be satisfied all the conditions precedent which are set
forth in Articles 8 and 9, and OSI will use its best efforts to cause the
transactions contemplated by this Agreement to be consummated in accordance with
this Agreement. In particular, OSI will use its best efforts to cause the Merger
to become effective in accordance with this Agreement by November 30, 1998.

     5.12 OSI Affiliate Agreements. Concurrently with the execution of this
Agreement, OSI will deliver to HNC a letter identifying all OSI's directors,
executive officers, ten percent (10%) or greater stockholders (and affiliates of
such persons who are stockholders of OSI) and all persons or entities who in
OSI's good faith judgment are or may be deemed to be "affiliates" of OSI within
the meaning of Rule 144 or Rule 405 promulgated under the 1933 Act at the time
this Agreement is executed ("OSI AFFILIATES"). OSI will use its diligent efforts
to cause each OSI Affiliate to execute and deliver to HNC, as promptly as
practicable after OSI's signing of this Agreement, an Affiliate Agreement in
substantially the form of Exhibit D (the "OSI AFFILIATE AGREEMENT"). In
addition, OSI will use its diligent efforts to cause each person or entity who
may become an OSI Affiliate after the Agreement Date and before the Effective
Time to execute and deliver an OSI Affiliate Agreement to HNC promptly after
such person or entity becomes an OSI Affiliate.

     5.13 Blue Sky Laws. OSI will use its best efforts to assist HNC to the
extent necessary to comply with the securities and Blue Sky laws of all
jurisdictions which are applicable in connection with the Merger.

     5.14 Pooling. OSI will cooperate with HNC to cause the business combination
to be effected by the Merger to be accounted for as a pooling of interests for
accounting and financial reporting purposes. Following the Agreement Date, OSI
will not take any action if, prior to taking such action, OSI has been informed
by HNC or its accountants or by OSI's accountants that, in the opinion of HNC's
or OSI's accountants (as applicable), taking such action is reasonably likely to
preclude HNC from accounting for the Merger as a "pooling of interests" for
accounting and financial reporting purposes and HNC or its accountants promptly
give OSI a writing that states in reasonable detail the action(s) that HNC or
its accountants suggest OSI not take.

     5.15 Certain Investments; Agreements. OSI does not own, and will not make
any purchase or other acquisition of, or investment in, any shares of HNC Common
Stock or other securities of HNC. OSI will not enter into any agreement with any
holders of HNC shares calling for either OSI or HNC to retire or reacquire all
or part of the HNC shares to be issued pursuant to the Merger. OSI will not
enter into any financial arrangements for the benefit of any OSI stockholder
which, in effect, would negate the exchange of equity securities contemplated 
under


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this Agreement and the Merger, including without limitation any loan or other
financial arrangement at abnormally low interest rates, or any guarantee of
loans secured by HNC shares to be issued pursuant to the Merger.

     5.16 OSI Dissenting Shares. As promptly as practicable after the date of
OSI Stockholder Vote and prior to the Closing Date, OSI will furnish HNC with
the name and address of each holder (or potential holder) of any OSI Dissenting
Shares (if any) and the number of OSI Dissenting Shares (or potential OSI
Dissenting Shares) owned by each such holder.

     5.17 Termination of Registration and Voting Rights. All registration rights
agreements and voting agreements and proxies applicable to or affecting any
outstanding shares or other securities of OSI (other than the Voting Agreements
and the related Proxies referred to in Section 3.22) will be duly terminated and
canceled by no later than immediately prior to the Effective Time.

     5.18 Invention Assignment and Confidentiality Agreements. OSI will use its
best efforts to obtain from each employee, contractor and consultant of OSI who
has had access to any software, technology or copyrightable, patentable or other
proprietary works owned or developed by OSI, or to any other confidential or
proprietary information of OSI or its clients, an invention assignment and
confidentiality agreement in a form reasonably acceptable to HNC, duly executed
by such employee, contractor or consultant and delivered to OSI.

     5.19 OSI Employee Plans and Benefit Arrangements. OSI shall not issue any
shares of its capital stock under the OSI Employee Stock Purchase Plan and shall
terminate any OSI Benefit Arrangement which is governed by Section 401(k) of the
Code immediately prior to the Effective Time upon the request of HNC. In the
event that the distribution or rollover of assets from the trust of a Code
Section 401(k) plan which is terminated will trigger liquidation, surrender or
other fees which will be imposed on the terminated plan or any participant or
beneficiary of such terminated plan, OSI shall take such actions as are
necessary to reasonably estimate the amount of such fees and provide such
reasonable estimate in writing to HNC prior to the Effective Time. Any OSI
Benefit Arrangement which is governed by Section 401(k) of the Code and relies
on a standardized prototype document shall be amended prior to the Effective
Time so as not to require all corporations which are members of the same
controlled group of corporations as the employer sponsoring such plan to
participate in such plan. OSI shall file any delinquent Form 5500s through the
Department of Labor Delinquent Filer Voluntary Compliance Program prior to the
Effective Time.

     5.20 Exercise of Warrants. OSI shall use its best efforts to cause each and
every holder of any Warrant to exercise each such Warrant in full in accordance
with its terms prior to the Effective Time so that no Warrants are outstanding
immediately prior to the Effective Time. For purposes of this Section the term
"Warrants" has the meaning given to such term in Section 3.4.2.

     5.21 Closing of Merger. OSI will not refuse to effect the Merger if, on or
before the Closing Date, all the conditions precedent to OSI's obligations to
effect the Merger under Article 8 hereof have been satisfied or waived by OSI
and HNC elects to consummate the Merger.

     5.22 Tax-Free Reorganization. OSI will not take any action that would cause
the Merger not to qualify as a tax-free reorganization under Section 368 of the
Code.

                                    ARTICLE 6

                                  HNC COVENANTS

     During the time period from the Agreement Date until the earlier to occur 
of (i) the Effective Time or (ii) the termination of this Agreement in
accordance with Article 10, HNC covenants and agrees as follows:

     6.1  Advice of Changes. HNC will promptly advise OSI in writing of any
event occurring subsequent to the date of this Agreement that would render any
representation or warranty of HNC or Sub contained in this Agreement, if made on
or as of the date of such event or the Closing Date, to be untrue or inaccurate
in any material respect.

     6.2  Regulatory Approvals. HNC will execute and file, or join in the
execution and filing, of any application, notification (including without
limitation any notification or provision of information, if any, that may be


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required under the HSR Act) or other document that may be necessary in order to
obtain the authorization, approval or consent of any governmental body, federal,
state, local or foreign, which may be reasonably required, in connection with
the consummation of the Merger and the other transactions contemplated by this
Agreement and the HNC Ancillary Agreements and Sub Ancillary Agreements in
accordance with the terms of this Agreement. HNC will use diligent efforts to
obtain all such authorizations, approvals and consents.

     6.3  Satisfaction of Conditions Precedent. HNC will use its best efforts to
satisfy or cause to be satisfied all of the conditions precedent which are set
forth in Article 8, and HNC will use its best efforts to cause the transactions
contemplated by this Agreement to be consummated in accordance with the terms of
this Agreement. In particular, HNC will use its best efforts to cause the Merger
to become effective in accordance with this Agreement by November 30, 1998.

     6.4  Listing of Additional Shares. HNC will use its best efforts to cause
the shares of HNC Common Stock issuable upon conversion of OSI Common Stock and
OSI Preferred Stock in the Merger and upon exercise of the HNC Options to be
issued in the Merger to be approved for listing (subject to notice of issuance)
on the Nasdaq Stock Market.

     6.5  Closing of Merger. HNC will not refuse to effect the Merger if, on or
before the Closing Date, all the conditions precedent to HNC's obligations to
effect the Merger under Article 9 hereof have been satisfied or waived by HNC
and OSI elects to consummate the Merger. In the event that HNC (a) breaches the
provisions of the first sentence of this Section 6.5 and refuses to consummate
the Merger, or (b) does not consummate the Merger and terminates this Agreement
pursuant to Section 10.2.2 solely due to OSI's failure to satisfy any of the
closing conditions contained in Sections 9.24 through 9.28 of this Agreement
(either such action described in (i) or (ii) above being hereinafter referred to
as a "REFUSAL ACTION"), then HNC will: (a) if HNC is requested by OSI to do so
pursuant to a written notice delivered by OSI to HNC within thirty (30) days
after HNC notifies OSI that HNC is taking a Refusal Action, purchase from OSI a
total of 625,000 shares of OSI Common Stock, as presently constituted, at a
price of $8.00 per share (for a total purchase price of $5,000,000), payable in
cash, pursuant to a stock purchase agreement with OSI and related agreements
containing the principal terms and conditions summarized in Part A of Exhibit E;
and (b) if HNC is requested by OSI to do so pursuant to a written notice
delivered by OSI to HNC within thirty (30) days after HNC notifies OSI that HNC
is taking a Refusal Action, loan to OSI the principal sum of Five Million
Dollars ($5,000,000) (or such lesser amount as OSI may request) on a secured
basis on the loan terms and conditions summarized on Part B of Exhibit E. As a
material inducement and consideration for HNC to enter into this Agreement, the
parties hereby acknowledge and agree HNC's agreement to the provisions of this
Section 6.5, and HNC's performance of the foregoing obligations of HNC under the
immediately preceding sentence, will constitute liquidated damages and the sole
and exclusive right and remedy of OSI and its securityholders, and the sole and
exclusive liability of HNC, for any breach or violation by HNC of its
obligations under the first sentence of this Section 6.5 and/or any Refusal
Action and that HNC shall not obligated to consummate the Merger and OSI shall
not be entitled to any injunctive relief, the remedy of specific performance or
other remedy due to HNC's failure to consummate the Merger pursuant to a Refusal
Action. OSI further acknowledges and agrees that neither HNC, Sub, nor any of
their respective officers, directors, employees, securityholders, agents or
attorneys, or their successors or assigns, shall have any liability or
obligation whatsoever to OSI or to any of its officers, directors,
securityholders, employees or agents on account of any Refusal Action by or on
the part of HNC, except as expressly provided in this Section 6.5.

     6.6  Employee Benefits. As soon as practicable after the Agreement Date,
HNC and OSI shall confer and work together in good faith to agree upon a
mutually acceptable plan that is consistent with the other terms and conditions
of this Agreement, and that has as its primary purpose the transition (to the
extent reasonably practicable and lawful, and to the extent financially
reasonable) of OSI employees to HNC employee benefit plans providing benefits
not less favorable in the aggregate than other similarly situated employees of
HNC and in a manner that results in minimal disruption to the continuing
operations of OSI and that does not result in any material increase in HNC's or
the Surviving Corporation's cost per employee of providing the benefits afforded
under such employee benefit plans; provided, however, that nothing herein will
require HNC (or the Surviving Corporation) to cancel or terminate, or to adopt
or continue to provide benefits under, any OSI Benefit Arrangement or other OSI
employee benefit plan, or to suffer or incur any unusual financial expense, or
any fine or penalty, in connection therewith. In the event that, pursuant to
Section 5.19, OSI terminates the OSI Benefit Arrangement which is governed by
Section 401(k) upon the request of HNC, HNC will take such actions as are
necessary and desirable to permit participants of 


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such terminated plan that commence employment with HNC to rollover their
accounts to a Section 401(k) plan sponsored by HNC.

     6.7  Indemnification and Insurance

          6.7.1 Indemnification. Subject to the provisions of this Section 6.7,
for a period of six (6) years after the Effective Time, HNC shall, and shall
cause the Surviving Corporation to, indemnify and hold harmless the present and
former officers and directors of OSI and any officers, directors and employees
of OSI who are (or were) fiduciaries of OSI "employee benefits plans" (as
defined in Section 3(3) of ERISA) (collectively, the "OSI INDEMNIFIED PARTIES")
in respect of acts or omissions of such persons taken or occurring prior to the
Effective Time and made in their capacity as an officer or director of OSI
(including without limitation any acts or omissions of such persons with respect
to this Agreement and the transactions contemplated hereby) or made in their
capacity as such a fiduciary, to the fullest extent permitted by (i) the
provisions of Sections 145(a), (b) and (c) of the Delaware General Corporation
Law (as if the references to the word "may" in the first sentences of Sections
145(a) and (b) was "shall") and (ii) by OSI's Certificate of Incorporation and
Bylaws as in effect on the Agreement Date; provided, however, that
notwithstanding the foregoing, nothing in this Section 6.7.1 shall require the
Surviving Corporation or HNC to provide the foregoing indemnification to an OSI
Indemnified Party: (a) to any extent that such indemnification is limited or not
permitted by applicable law; or (b) to any extent that such indemnification
involves a claim for indemnification for an act or omission of such OSI
Indemnified Party that (i) constituted a breach of such OSI Indemnified Party's
duty of loyalty to OSI or its stockholders, (ii) a breach of fiduciary duty in
the operation or administration of an "employee benefits plan" (as defined in
Section 3(3) of ERISA), (iii) was not taken in good faith by such OSI
Indemnified Party or involved intentional misconduct or a knowing violation of
law on the part of such OSI Indemnified Party, or (iv) related to any
transaction from which such OSI Indemnified Party derived an improper personal
benefit. In the event that any claim or claims for indemnification under this
Section 6.7.1 is or are asserted against HNC in writing within six (6) years
after the Effective Time, then all rights to indemnification in respect of any
such claim or claims shall continue until final disposition of any and all such
claims.

          6.7.2 Advancement of Expenses. Subject to the provisions of this
Section 6.7, without limiting the provisions of Section 6.7.1, in the event
that, within six (6) years of the Effective Time, any OSI Indemnified Party
becomes involved, in such OSI Indemnified Party's capacity as an officer or
director of OSI, as a defendant in any action or proceeding, or the subject of
any investigation, in each case in connection with any matter as to which
indemnification is and can be claimed by such officer or director pursuant to
Section 6.7.1, then, to the fullest extent permitted under applicable law, HNC
shall, or shall cause the Surviving Corporation to, pay as incurred, such OSI
Indemnified Party's reasonable legal and other expenses (including the cost of
any investigation and preparation) incurred in connection with such action,
proceeding or investigation (to the extent that such expenses have been verified
by written invoices from the parties billing such expenses to the OSI
Indemnified Party that have been delivered to HNC), upon receipt of a written
undertaking executed by such OSI Indemnified Party to repay to HNC or the
Surviving Corporation, as applicable, all such legal and other expenses paid by
HNC or the Surviving Corporation under this Section 6.7.2 if it shall ultimately
be determined that such OSI Indemnified Party is not entitled to be indemnified
by the Surviving Corporation or HNC for such expenses under applicable law or
the provisions of Section 6.7.1.

          6.7.3 Insurance. After the Effective Time, HNC shall, or shall cause
OSI to, provide officers' and directors' liability insurance having a five (5)
year term (running from the Effective Time), solely in respect of acts or
omissions occurring on or prior to the Effective Time covering each of OSI's
officers and directors who are currently covered by OSI's directors' and
officers' liability insurance policy in effect on the Agreement Date (which
policy is listed in Schedule 3.20 to the OSI Disclosure Letter) on terms
substantially similar to those of such policy in effect on the Agreement Date;
provided, however, that in satisfying its obligation under this Section, HNC
shall not be obligated to expend in excess of a cumulative aggregate maximum of
$120,000 (the "MAXIMUM PREMIUM") for such five (5) year coverage, and if the
Surviving Corporation is unable to obtain the insurance required by this Section
6.7.3, it shall obtain as much comparable insurance as possible for a premium
equal to the Maximum Premium. OSI Indemnified Parties shall look first to the
insurance policies described in this Section 6.7.3 for recovery of any amounts
which they may be entitled to be paid under the foregoing provisions of Sections
6.7.1 and/or 6.7.2. To the extent that any insurance proceeds payable under the
insurance policy or policies described in this Section 6.7.3 are payable to pay
any amounts for which HNC and/or the Surviving Corporation have previously paid
indemnification or advanced expenses pursuant to this Section 6.7, then HNC and
the Surviving Corporation, as applicable, shall be entitled to recover such
insurance proceeds. HNC's and/or the Surviving Corporation's obligations to pay
any 


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amounts to an OSI Indemnified Party under this Section 6.7 shall be reduced,
dollar for dollar, by the amount of any insurance proceeds actually received by
such OSI Indemnified Party in respect of such amounts.

          6.7.4 Escrow Matters. Notwithstanding the foregoing provisions of
Sections 6.7.1 and 6.7.2, neither HNC nor the Surviving Corporation shall be
obligated to indemnify any person with respect to any amounts paid from the
Escrow Shares in satisfaction of an indemnification claim made by HNC or any
other Indemnified Person pursuant to Article 11 of this Agreement.

     6.8  Tax-Free Reorganization. Neither HNC nor Sub will take any action that
would cause the Merger not to qualify as a tax-free reorganization under Section
368(a) of the Code.

                                    ARTICLE 7

                                 CLOSING MATTERS

     7.1  The Closing. Subject to termination of this Agreement as provided in
Article 10 below, the closing of the transactions to consummate the Merger (the
"CLOSING") will take place at the offices of Fenwick & West LLP, Two Palo Alto
Square, Palo Alto, California 94306 at 10:00 a.m., Pacific Standard Time as soon
as practicable, and in all events by the second business day after all of the
conditions to Closing set forth in Sections 8 and 9 hereof have been satisfied
and/or waived in accordance with this Agreement, or on such other day as HNC and
OSI may mutually agree on (the "CLOSING DATE"). Concurrently with the Closing,
the Certificate of Merger will be filed with the Delaware Secretary of State.

     7.2  Exchange of Certificates.

          7.2.1 At the Closing, each holder of shares of OSI Common Stock and/or
OSI Preferred Stock will surrender the certificate(s) for such shares (each a
"OSI CERTIFICATE"), duly endorsed to HNC for cancellation as of the Effective
Time together (if requested by HNC) with the agreement and acknowledgment
contemplated by the second sentence of Section 2.4.2. Promptly after the
Effective Time and receipt of such OSI Certificates and such agreement and
acknowledgment, HNC or its transfer agent will issue to each tendering holder of
a OSI Certificate a certificate for the number of shares of HNC Common Stock to
which such holder is entitled pursuant to Section 2.1.2 (less the Escrow Shares
of such holder that are to be withheld and placed in escrow pursuant to Section
2.4 and the Escrow Agreement) and HNC or its transfer agent will pay by check to
each tendering holder cash in lieu of fractional shares in the amount payable to
such holder in accordance with the provisions of Section 2.1.4. At or about the
Closing Date, HNC will deliver the certificates representing the Escrow Shares
to the Escrow Agent pursuant to the Escrow Agreement.

          7.2.2 No dividends or distributions payable to holders of record of
HNC Common Stock after the Effective Time, or cash payable in lieu of fractional
shares, will be paid to the holder of any unsurrendered OSI Certificate unless
and until the holder of such unsurrendered OSI Certificate surrenders such OSI
Certificate to HNC as provided above. Subject to the effect, if any, of
applicable escheat and other laws, following surrender of any OSI Certificate,
there will be delivered to the person entitled thereto, without interest, the
amount of any dividends and distributions theretofore paid with respect to HNC
Common Stock so withheld as of any date subsequent to the Effective Time and
prior to such date of delivery.

          7.2.3 After the Effective Time there will be no further registration
of transfers on the stock transfer books of OSI or its transfer agent of any
shares of capital stock of OSI that were outstanding immediately prior to the
Effective Time. If, after the Effective Time, OSI Certificates are presented for
any reason, they will be canceled and exchanged as provided in this Section 7.2.

          7.2.4 Until OSI Certificates representing shares of OSI Common Stock
and/or OSI Preferred Stock that are outstanding immediately prior to the
Effective Time are surrendered pursuant to Section 7.2.1 above, such OSI
Certificates will be deemed, for all purposes, to evidence ownership of the
number of shares of HNC Common Stock into which such shares of OSI Common Stock
and/or OSI Preferred Stock will have been converted pursuant to Section 2.1.2.


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                                    ARTICLE 8

                        CONDITIONS TO OBLIGATIONS OF OSI

     OSI's obligations hereunder are subject to the fulfillment or satisfaction,
on and as of the Closing, of each of the following conditions (any one or more
of which may be waived by OSI, but only in a writing signed by OSI):

     8.1  Accuracy of Representations and Warranties. The representations and
warranties of HNC and Sub set forth in Article 4 (as qualified by the HNC
Disclosure Letter) will be true and accurate on and as of the Closing with the
same force and effect as if they had been made at the Closing Date (except for
any such representations or warranties that, by their terms, speak only as of a
specific date or dates, in which case such representations and warranties shall
be true and correct on and as of such specified date or dates), and OSI will
have received a certificate to such effect executed by an executive officer of
HNC.

     8.2  Covenants. HNC will have performed and complied in all material
respects with all of its covenants contained in Article 6 on or before the
Closing (to the extent that such covenants require performance by HNC on or
before the Closing), and OSI will have received a certificate to such effect
signed by an executive officer of HNC.

     8.3  Requisite Approvals. The Merger and the principal terms of this
Agreement shall have been duly and validly approved and adopted by OSI's
stockholders, in accordance with applicable laws and OSI's Certificate of
Incorporation and Bylaws. The principal terms of this Agreement and the issuance
of shares of HNC Common Stock in the Merger and the grant of HNC Options upon
conversion of OSI Options in the Merger will have been duly and validly approved
and adopted by HNC's Board of Directors in accordance with applicable laws and
HNC's Certificate of Incorporation and Bylaws. The principal terms of this
Agreement will have been approved and adopted by Sub's Board of Directors and
sole stockholder in accordance with applicable law and Sub's Certificate of
Incorporation and Bylaws.

     8.4  Compliance with Law; No Legal Restraints; No Litigation. No litigation
or proceeding will be threatened or pending for the purpose or with the probable
effect of enjoining or preventing the consummation of the Merger or any of the
other material transactions contemplated by this Agreement. There will not be
issued or enacted or adopted, or threatened in writing by any Governmental
Authority, any order, decree, temporary, preliminary or permanent injunction,
legislative enactment, statute, regulation, action or proceeding, or any
judgment or ruling by any court, arbitrator, Governmental Authority or any other
fact or circumstance, that, directly or indirectly, challenges, threatens,
prohibits, enjoins, restrains, suspends, delays, conditions or renders illegal
or imposes limitations on (or involves a challenge, threat to, or a prohibition,
injunction, restraint, suspension, delay or illegality of, or to impose
limitations on) the Merger or any other material transaction contemplated by
this Agreement.

     8.5  Government Consents; HSR Act Compliance. There will have been obtained
at or prior to the Closing Date such permits or authorizations, and there will
have been taken all such other actions by any regulatory authority having
jurisdiction over the parties and the actions herein proposed to be taken, as
may be required to lawfully consummate the Merger, including but not limited to
requirements under applicable federal and state securities laws. All applicable
waiting periods under the HSR Act shall have expired or early termination of
such waiting periods shall have been granted.

     8.6  Form S-4 Effective. The Form S-4 shall have been declared effective by
the SEC and no stop order of the SEC affecting the issuance of the shares of HNC
Common Stock or HNC Options in the Merger shall be in effect.

     8.7  Opinion of HNC's Counsel. OSI will have received from Fenwick & West
LLP, counsel to HNC, a favorable opinion regarding the matters set forth in
Exhibit F.

     8.8  Nasdaq Listing. The shares of HNC Common Stock issuable in the Merger
pursuant to Section 2.1.2, and the shares of HNC Common Stock issuable upon the
exercise of HNC Options issued in the Merger pursuant to Section 2.2, shall be
authorized for listing on the Nasdaq Stock Market (subject to notice of
issuance).

     8.9  No Material Adverse Change. There will not have been any Material
Adverse Change (as defined in Article 1) in the financial condition, properties,
assets, liabilities, business, results of operations or operations of 


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HNC and its subsidiaries, taken as a whole, since June 30, 1998 (where, for
purposes of this Section 8.9, the parties agree that a decrease in the market
price of HNC Common Stock shall not, of itself, constitute a Material Adverse
Change of the type described in this Section 8.9), and OSI will have received a
certificate to such effect signed by OSI's President or Chief Financial Officer.

                                    ARTICLE 9

                    CONDITIONS TO OBLIGATIONS OF HNC AND SUB

     The obligations of HNC and Sub hereunder are subject to the fulfillment or
satisfaction on, and as of the Closing, of each of the following conditions (any
one or more of which may be waived by HNC, but only in a writing signed by HNC):

     9.1  Accuracy of Representations and Warranties. The representations and
warranties of OSI set forth in Article 3 (as qualified by OSI Disclosure Letter)
(a) that are qualified as to materiality will be true and correct and (B) that
are not qualified as to materiality shall be true and correct in all material
respects, in each case on and as of the Closing with the same force and effect
as if they had been made at the Closing Date (except for any such
representations or warranties that, by their terms, speak only as of a specific
date or dates, in which case such representations and warranties shall be true
and correct on and as of such specified date or dates), and HNC will have
received a certificate to such effect executed by OSI's President and/or Chief
Financial Officer.

     9.2  Covenants. OSI will have performed and complied in all material
respects with all of its covenants contained in Article 5 on or before the
Closing, and HNC will have received a certificate to such effect signed by OSI's
President and/or Chief Financial Officer.

     9.3  No Material Adverse Change. There will not have been any Material
Adverse Change (as defined in Article 1) in the financial condition, properties,
assets, liabilities, business, results of operations or operations of OSI and
its subsidiaries, taken as a whole, and HNC will have received a certificate to
such effect signed by OSI's President and Chief Financial Officer.

     9.4  No Legal Restraints; No Litigation. There will not be any outstanding
or threatened, or enacted or adopted, any order, decree, temporary, preliminary
or permanent injunction, legislative enactment, statute, regulation, action,
proceeding or any judgment or ruling by any court, arbitrator, governmental
agency, authority or entity, or any other fact or circumstance, that, directly
or indirectly, challenges, threatens, prohibits, enjoins, restrains, suspends,
delays, conditions, or renders illegal or imposes limitations on (or is likely
to result in a challenge, threat to, or a prohibition, injunction, restraint,
suspension, delay or illegality of, or to impose limitations on) the Merger or
any other material transaction contemplated by this Agreement or any OSI
Ancillary Agreement. No litigation or proceeding will be threatened or pending
for the purpose or with the probable effect of enjoining or preventing the
consummation of any of the transactions contemplated by this Agreement, or which
could be reasonably expected to have a Material Adverse Effect on OSI.

     9.5  Government Consents; HSR Act Compliance. There will have been obtained
at or prior to the Closing Date such permits or authorizations, and there will
have been taken all such other actions, as may be required to consummate the
Merger by any governmental or regulatory authority having jurisdiction over the
parties and the actions herein proposed to be taken, including but not limited
to requirements under applicable federal and state securities laws. All
applicable waiting periods under the HSR Act applicable to the Merger shall have
expired or early termination of such waiting periods shall have been granted
without any condition or requirement requiring or calling for the disposition or
divestiture of any product or other asset of OSI or HNC or any of their
subsidiaries by HNC or OSI or any of their subsidiaries.

     9.6  Opinion of OSI's Counsel. HNC will have received from Hale and Dorr
LLP, counsel to OSI, a favorable opinion substantially in the form of Exhibit G,
provided, however that certain of the opinions set forth in Exhibit G may be
provided in an opinion from Shipman & Goodwin, counsel to OSI, subject to the
reasonable satisfaction of Fenwick & West LLP.


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     9.7  Consents. HNC will have received duly executed copies of all material
third-party consents, approvals, assignments, waivers, authorizations or other
certificates including without limitation those set forth in Schedule 3.12 to
the OSI Disclosure Letter contemplated by this Agreement or OSI Disclosure
Letter or reasonably deemed necessary by HNC's legal counsel to provide for the
continuation in full force and effect of any and all material contracts,
agreements and leases of OSI and its subsidiaries after the Merger and the
preservation of OSI's IP Rights and other assets and properties after the Merger
and for HNC to consummate the Merger and the other transactions contemplated by
this Agreement, the HNC Ancillary Agreements and the OSI Ancillary Agreements in
form and substance reasonably satisfactory to HNC.

     9.8  Requisite Approvals. The principal terms of this Agreement, the Merger
and OSI Ancillary Agreements will have been duly and validly approved and
adopted, as required by applicable law and OSI's Certificate of Incorporation
and Bylaws, by: (a) OSI's Board of Directors; (b) the valid and affirmative vote
of OSI's stockholders as described in Section 3.23.

     9.9  Restriction on Dissenting Shares. The number of the outstanding shares
of OSI Common Stock and OSI Preferred Stock (if any) that have not affirmatively
voted in favor of the Merger and are eligible to exercise or perfect any
statutory appraisal rights of dissenting stockholders under applicable law will
not exceed that number of such shares which represented five percent (5%) of the
shares of OSI Common Stock outstanding on the Record Date (as defined in Section
3.23) where, for this purpose, each share of OSI Preferred Stock will be deemed
to be that number of shares of OSI Common Stock into which it was convertible
under OSI's Certificate of Incorporation on the Record Date.

     9.10 OSI Affiliate Agreements. Each director, executive officer and ten
percent (10%) or greater stockholder of OSI and each OSI Affiliate who is to
receive HNC Common Stock in the Merger will have executed and delivered to HNC a
OSI Affiliate Agreement in the form of Exhibit D.

     9.11 Non-Competition Agreements. HNC will have received from each of
Douglas K. Anderson, Graham H. Gurney, John L. Person, Clifford I. Waggoner and
Richard J. Willemin, a fully executed copy of a Non-Competition Agreement in the
form of Exhibit H.

     9.12 Escrow Agreement. HNC will have received a fully executed copy of the
Escrow Agreement in the form of Exhibit A executed by the Escrow Agent and the
Representative.

     9.13 Form S-4 Effective. The Form S-4 shall have been declared effective by
the SEC and no stop order of the SEC affecting the issuance of the shares of HNC
Common Stock or HNC Options in the Merger shall be in effect.

     9.14 Continued Employment of Certain Personnel. Each of Douglas K. Anderson
and John L. Person, who are currently employees of OSI, (a) shall have continued
to be employed as full-time employees of OSI at all times from the Agreement
Date through the Effective Time and (b) shall have accepted offers of continued
at will employment with OSI following the Effective Time pursuant to written
employment offer letters reasonably satisfactory to HNC in which such persons
will have agreed to continue to be full-time employees of OSI for a period of
two (2) years after the Effective Time.

     9.15 Resignation of Directors. The directors of OSI in office immediately
prior to the Effective Time of the Merger (other than any such director who is
designated in Section 2.5(g) to be a director of OSI immediately after the
Effective Time) will have resigned as directors of the Surviving Corporation in
writing effective as of the Effective Time.

     9.16 Pooling Opinions. HNC will have been advised in writing, as of
immediately prior to the Effective Time, by its accountants,
PricewaterhouseCoopers LLP, that as of such date, subject to customary
qualifications, PricewaterhouseCoopers LLP concurs with HNC's management's
conclusion that no conditions exist that would preclude HNC from accounting for
the Merger as a pooling of interests in accordance with generally accepted
accounting principles, and OSI will have been advised in writing, as of
immediately prior to the Effective Time, by its accountants,
PricewaterhouseCoopers LLP, that, as of such date, subject to customary
qualifications, no conditions exist that would preclude OSI from being a party
to a business combination for which the pooling of interest method of accounting
would be available in accordance with generally accepted accounting principles.


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     9.17 No Other OSI Securities. All Other OSI Securities (including without
limitation all Warrants), if any, will have been exercised in full and thereby
converted into shares of OSI Common Stock or OSI Preferred Stock in accordance
with their current terms and conditions, so that no Other OSI Securities will be
outstanding immediately prior to the Effective Time.

     9.18 BISYS Rights Released. The BISYS Group, Inc. ("BISYS") shall have
executed and delivered to OSI a written release and waiver agreement reasonably
satisfactory in form and substance to HNC and its counsel, wherein BISYS shall:
(a) terminate any rights of BISYS under Section 20 of that certain Software
License and Marketing and Distribution Agreement dated August 20, 1997 between
BISYS and OSI (the "BISYS AGREEMENT"); (b) waive, with respect to the Merger,
any rights of BISYS arising from (i) the "Change of Control" (as defined in
Section 1.0 of the BISYS Agreement) provisions of the BISYS Agreement, including
without limitation, those provisions in Sections 13 and 21(b)(iii) of the BISYS
Agreement and (ii) any other provisions of the BISYS Agreement that may be
triggered by the consummation of the Merger or any of the other transactions
contemplated to occur under this Agreement at the Effective Time; and (c) waive
and terminate any rights of BISYS under Section 14 of the BISYS Agreement.

     9.19 COCC Rights Released. Connecticut On-Line Computer Center, Inc.
("COCC") shall have executed and delivered to OSI a written release and waiver
agreement reasonably satisfactory in form and substance to HNC and its counsel,
wherein COCC shall waive and terminate any rights of COCC arising from (i) the
"Change of Control" (as defined in Section 1.2 of the COCC Agreement) provisions
of that certain License and Marketing Agreement dated December 9, 1997 between
COCC and OSI (the "COCC AGREEMENT"), including without limitation, those
provisions in Section 16.2(iii) of the COCC Agreement and (ii) any other
provisions of the COCC Agreement that may be triggered by the consummation of
the Merger or any other transactions contemplated to occur under this Agreement
at the Effective Time.

     9.20 CII's Series A-2 Rights Confirmed. Connecticut Innovations
Incorporated ("CII") shall have executed and delivered to OSI a written
agreement reasonably satisfactory in form and substance to HNC and its counsel,
wherein CII shall confirm that it is not exercising the rights set forth in
Section 5 of that certain Purchase Agreement dated May 12, 1995 between CII and
OSI (the "CII AGREEMENT") in connection with the Merger and that such rights
terminate by their terms upon the consummation of the Merger.

     9.21 Investors' Series B Rights Confirmed. The "Investors" listed in
Schedule A of that certain Series B Preferred Stock and Warrant Purchase
Agreement dated December 27, 1995 between the Investors listed in Schedule A
thereof and OSI (the "SERIES B AGREEMENT") shall have executed and delivered to
OSI a written agreement reasonably satisfactory in form and substance to HNC and
its counsel, wherein such Investors shall confirm that they are not exercising
the rights set forth in Section 6 of the Series B Agreement in connection with
the Merger and that such rights terminate by their terms upon the consummation
of the Merger.

     9.22 Investors' Series C Rights Confirmed. The "Investors" listed in
Schedule A of that certain that certain Series C Preferred Stock and Warrant
Purchase Agreement dated October 23, 1996 between the Investors listed in
Schedule A thereof and OSI (the "SERIES C AGREEMENT") shall have executed and
delivered to OSI a written agreement reasonably satisfactory in form and
substance to HNC and its counsel, wherein such Investors shall confirm that they
are not exercising their rights set forth in Section 6 of the Series C Agreement
in connection with the Merger and that such rights terminate by their terms upon
the consummation of the Merger.

     9.23 Investors' Series D Rights Confirmed. BISYS shall have executed and
delivered to OSI a written agreement reasonably satisfactory in form and
substance to HNC and its counsel, wherein BISYS shall confirm that it is not
exercising the rights set forth in Section 6 of that certain Series D Preferred
Stock and Warrant Purchase Agreement dated August 22, 1997 between BISYS and OSI
(the "SERIES D AGREEMENT") in connection with the Merger and that such rights
terminate by their terms upon the consummation of the Merger.

     9.24 Rights under CII Agreement Confirmed. CII shall have executed and
delivered to OSI a written release and waiver agreement reasonably satisfactory
in form and substance to HNC and its counsel, wherein CII shall confirm that any
rights of CII arising from Sections 7.5 and 7.6 of the CII Agreement terminate
by their terms upon the consummation of the Merger.


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     9.25 Rights under 12/27/95 Series B Management Rights Letter Released. The
"Investors" who are listed on Schedule 1 of that certain Management Rights
Letter dated December 27, 1995 between OSI and such Investors (the "12/27/95
LETTER") shall have executed and delivered to OSI a written release and waiver
agreement reasonably satisfactory in form and substance to HNC and its counsel,
wherein such Investors waive and terminate all rights of Investors under the
12/27/95 Letter effective as of the consummation of the Merger; provided,
however, that the confidentiality provisions of the second to the last paragraph
of such letter shall continue in full force and effect.

     9.26 Rights under 10/23/96 Series C Management Rights Letter Released. The
"Investors" who are listed on Schedule 1 of that certain Management Rights
Letter dated October 23, 1996 between OSI and such Investors (the "10/23/96
LETTER") shall have executed and delivered to OSI a written release and waiver
agreement reasonably satisfactory in form and substance to HNC and its counsel,
wherein such Investors waive and terminate all rights of Investors under the
10/23/96 Letter effective as of the consummation of the Merger; provided,
however, that the confidentiality provisions of the second to the last paragraph
of such letter shall continue in full force and effect.

     9.27 Rights under 8/22/97 Series D Management Rights Letter Released. BISYS
shall have executed and delivered to OSI a written release and waiver agreement
reasonably satisfactory in form and substance to HNC and its counsel, wherein
BISYS waives and terminates all rights of BISYS under that certain Management
Rights Letter dated October 23, 1996 between OSI and BISYS effective as of the
consummation of the Merger (the "8/22/97 LETTER"); provided, however, that the
confidentiality provisions of the second to the last paragraph of such letter
shall continue in full force and effect.

     9.28 Rights under Investors' Rights Agreement Confirmed. Those "Investors"
listed in Schedules A, B, C and D of that certain Amended and Restated
Investors' Rights Agreement dated August 22, 1997 between the Investors listed
in Schedules A, B, C and D thereof and OSI (the "INVESTORS' RIGHTS AGREEMENT")
necessary to effect an amendment or waiver of the Investors' Rights Agreement
pursuant to Section 3.7 thereof shall have executed and delivered to OSI a
written agreement reasonably satisfactory in form and substance to HNC and its
counsel, wherein such Investors shall confirm that all rights of the Investors
under the Investors' Rights Agreement terminate by their terms upon the
consummation of the Merger.

                                   ARTICLE 10

                            TERMINATION OF AGREEMENT

     10.1 Termination by Mutual Consent. This Agreement may be terminated at any
time prior to the Effective Time by the mutual written consent of HNC and OSI.

     10.2 Unilateral Termination.

          10.2.1 Either HNC or OSI, by giving written notice to the other, may
terminate this Agreement if a court of competent jurisdiction or other
Governmental Authority shall have issued a nonappealable final order, decree or
ruling or taken any other action, in each case having the effect of permanently
restraining, enjoining or otherwise prohibiting the Merger.

          10.2.2 Either HNC or OSI, by giving written notice to the other, may
terminate this Agreement if the Merger shall not have been consummated by
midnight Pacific time on the Termination Date; provided, however, that the right
to terminate this Agreement pursuant to this Section 10.2.2 shall not be
available to any party whose failure to perform in any material respect any of
its obligations under this Agreement results in the failure of any condition set
forth in Article 8 or Article 9 or if the failure of such condition results from
facts or circumstances that constitute a material breach of a representation or
warranty made under this Agreement by such party, if the other party has
performed in all material respects its obligations under this Agreement and if
the representations and warranties of such other party to this Agreement are
true and correct in all material respects as of the Termination Date.

          10.2.3 Either HNC or OSI may terminate this Agreement at any time
prior to the Closing if the other has committed (or, in the case of a
termination by OSI, Sub has committed) a material breach of (a) any of its
representations and warranties under Article 3 or Article 4 of this Agreement,
as applicable; or (b) any of its covenants under Article 5 or Article 6 of this
Agreement, as applicable, and has not cured such material breach within 


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thirty (30) days after the party seeking to terminate this Agreement has given
the other party written notice of the material breach and its intention to
terminate this Agreement pursuant to this Section 10.2.3.

     10.3 No Liability for Termination. Termination of this Agreement by a party
(the "TERMINATING PARTY") in accordance with this Section 10 will not give rise
to any obligation or liability on the part of the Terminating Party on account
of such termination, except to the extent otherwise expressly provided in
Section 6.5.

                                   ARTICLE 11

                  SURVIVAL OF REPRESENTATIONS, INDEMNIFICATION

                       AND REMEDIES, CONTINUING COVENANTS

     11.1 Survival of Representations. All representations, warranties and
covenants of OSI contained in this Agreement will remain operative and in full
force and effect, regardless of any investigation made by or on behalf of HNC,
until that date (the "ESCROW RELEASE DATE") which is the earlier of (i) the
termination of this Agreement or (ii) the first (1st) anniversary of the
Effective Time; provided, however, that the representations and warranties
respecting matters addressed by the first audited financial statements of HNC
(on a consolidated combined basis with OSI) together with a report thereon from
HNC's independent auditors, shall not expire later than the date on which such
financial statements are first released to the public.

     11.2 Agreement to Indemnify. Subject to the terms and conditions of this
Article 11 and the Escrow Agreement, the OSI Stockholders will indemnify and
hold harmless HNC and the Surviving Corporation and their respective officers,
directors, agents, stockholders and employees, and each person, if any, who
controls or may control HNC or the Surviving Corporation within the meaning of
the 1933 Act or the 1934 Act (each hereinafter referred to individually as an
"INDEMNIFIED PERSON" and collectively as "INDEMNIFIED PERSONS") from and against
any and all claims, demands, suits, actions, causes of actions, losses, costs,
damages, liabilities and expenses including, without limitation, reasonable
attorneys' fees, other professionals' and experts' reasonable fees and court or
arbitration costs (hereinafter collectively referred to as "DAMAGES") directly
or indirectly incurred, resulting or and arising out of: (a) any inaccuracy,
misrepresentation, breach of, or default in, any of the representations,
warranties or covenants given or made by OSI in this Agreement or in the OSI
Disclosure Letter or in any certificate delivered by or on behalf of OSI or an
officer of OSI pursuant hereto (if such inaccuracy, misrepresentation, breach or
default existed at the Closing Date); (b) any failure of any information
pertaining to OSI and contained in the Form S-4 or the Prospectus/Proxy
Statement to be true, correct and complete; or (c) any Excess Transaction
Expenses (as defined in Section 12.7). Any claim of indemnity made by an
Indemnified Person under this Section 11.2 must be raised in a writing delivered
to the Escrow Agent by no later than the Escrow Release Date, and, if raised by
such date, such claim shall survive the Escrow Release Date until final
resolution thereof. As used herein, the term "Damages" will not include any
overhead costs of HNC personnel not involving out-of-pocket expense and the
amount of Damages incurred by any Indemnified Person will be reduced, dollar for
dollar, by the amount of any insurance proceeds actually received by HNC (or any
subsidiary of HNC) on account of such Damages and the amount of U.S. federal or
state tax savings that the Representative demonstrates have been (or will be)
actually recognized by HNC for tax periods occurring during or after the Escrow
Period and that are directly attributable to Damages otherwise recoverable under
this Section (however, HNC shall not be obligated to disclose to OSI any
nonpublic financial information regarding HNC in order to assist OSI in
demonstrating such tax benefits, except that if any such tax benefits have in
fact been recognized by HNC, HNC will accurately describe the amount of such
recognized tax benefits upon requests); but "Damages" will include all
reasonable costs or expenses incurred by HNC to recover such insurance proceeds
or to obtain such direct tax savings. The Indemnified Persons will use
reasonable efforts to mitigate their Damages.

     11.3 Limitation. In seeking indemnification for Damages under Section 11.2,
the Indemnified Persons will exercise their remedies solely with respect to the
Escrow Shares and any other assets deposited in escrow pursuant to the Escrow
Agreement and no OSI Stockholder will have any liability whatsoever to an
Indemnified Person under Section 11.2 of this Agreement except to the extent
(and only to the extent) of such OSI Stockholder's portion of the Escrow Shares
and any other assets deposited under the Escrow Agreement. Except as otherwise
provided in the last sentence of this Section 11.3, the remedies set forth in
this Section 11.3 will be the sole and exclusive remedies of HNC and the other
Indemnified Persons under Section 11.2 of this Agreement or otherwise against
any OSI Stockholder for any inaccuracy, misrepresentation, breach of, or default
in, any of the 


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representations, warranties or covenants given or made by OSI in this Agreement,
the OSI Disclosure Letter or in any certificate, document or instrument
delivered by or on behalf of OSI or an officer of OSI pursuant hereto. In
addition, the indemnification provided for in Section 11.2 shall not apply
unless and until the aggregate Damages for which one or more Indemnified Persons
seeks or has sought indemnification hereunder exceeds a cumulative aggregate of
Two Hundred Fifty Thousand Dollars ($250,000) (the "BASKET"), in which event OSI
Stockholders shall, subject to the foregoing limitations, be liable to indemnify
the Indemnified Persons for all Damages; provided, however, that the Basket and
the foregoing provisions of this sentence shall not apply to any indemnification
claim for Damages for Excess Transaction Expenses. Nothing contained in this
Article 11 (including without limitation any provisions of this Section 11.3)
shall be construed to limit or restrict any rights of HNC against (a) any person
with respect to any fraudulent conduct or any fraudulent misrepresentations or
omission by such person or (b) any OSI Stockholder, with respect to any failure
of such OSI Stockholder to have good title to any issued and outstanding shares
of OSI Common Stock or OSI Preferred Stock held (or asserted to have been held)
by such OSI Stockholder, free and clear of all liens, claims and encumbrances,
or to have the full right, capacity and authority to vote such person's shares
of OSI stock in favor of the Merger and any other transaction contemplated by
this Agreement.

     11.4 Notice; Defense of Claims. The Representative shall have the right to
defend suits, actions, and proceedings against an Indemnified Person for which
the OSI Stockholders have indemnification obligations under Section 11.2 to the
extent provided in the Escrow Agreement.

                                   ARTICLE 12

                                  MISCELLANEOUS

     12.1 Governing Law. The internal laws of the State of Delaware
(irrespective of its choice of law principles) will govern the validity of this
Agreement, the construction of its terms, and the interpretation and enforcement
of the rights and duties of the parties hereto.

     12.2 Assignment; Binding Upon Successors and Assigns. Neither party hereto
may assign any of its rights or obligations hereunder without the prior written
consent of the other party hereto. This Agreement will be binding upon and inure
to the benefit of the parties hereto and their respective successors and
permitted assigns.

     12.3 Severability. If any provision of this Agreement, or the application
thereof, will for any reason and to any extent be invalid or unenforceable, then
the remainder of this Agreement and application of such provision to other
persons or circumstances will be interpreted so as reasonably to effect the
intent of the parties hereto. The parties further agree to replace such void or
unenforceable provision of this Agreement with a valid and enforceable provision
that will achieve, to the extent possible, the economic, business and other
purposes of the void or unenforceable provision.

     12.4 Counterparts. This Agreement may be executed in any number of
counterparts, each of which will be an original as regards any party whose
signature appears thereon and all of which together will constitute one and the
same instrument. This Agreement will become binding when one or more
counterparts hereof, individually or taken together, will bear the signatures of
both parties reflected hereon as signatories.

     12.5 Other Remedies. Except as otherwise provided herein, any and all
remedies herein expressly conferred upon a party will be deemed cumulative with
and not exclusive of any other remedy conferred hereby or by law on such party,
and the exercise of any one remedy will not preclude the exercise of any other.

     12.6 Amendment and Waivers. Any term or provision of this Agreement may be
amended, and the observance of any term of this Agreement may be waived (either
generally or in a particular instance and either retroactively or prospectively)
only by a writing signed by the party to be bound thereby. The waiver by a party
of any breach hereof or default in the performance hereof will not be deemed to
constitute a waiver of any other default or any succeeding breach or default.
This Agreement may be amended by the parties hereto at any time before or after
approval of this Agreement by the stockholders of OSI, but, after such approval,
no amendment will be made which by applicable law requires the further approval
of the stockholders of OSI without obtaining such further approval. At any time
prior to the Effective Time, each of OSI and HNC, by action taken by its Board
of Directors, may, to the extent legally allowed, (i) extend the time for the
performance of any of the obligations or other acts of the other; (ii) waive any
inaccuracies in the representations and warranties made to it contained herein
or in any 


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document delivered pursuant hereto; and (iii) waive compliance with any of the
agreements or conditions for its benefit contained herein. No such waiver or
extension will be effective unless signed in writing by the party against whom
such waiver or extension is asserted. The failure of any party to enforce any of
the provisions hereof will not be construed to be a waiver of the right of such
party thereafter to enforce such provisions.

     12.7 Expenses. Each party will bear its respective legal, auditors' and
investment bankers' and financial advisors' fees and other expenses incurred
with respect to this Agreement, the Merger and the transactions contemplated
hereby ("TRANSACTION EXPENSES"); provided, however, that if the Merger is
successfully consummated, then up to a maximum of $2,200,000 of OSI's verified
Transaction Expenses will be paid by HNC, and HNC shall be entitled to
indemnification from the Escrow Shares in accordance with Section 11.2 for an
amount equal to the amount (if any) by which OSI's Transaction Expenses exceed
$2,200,000 (such excess being hereinafter called the "EXCESS TRANSACTION
EXPENSES"), and such indemnification shall not be subject to the Basket.

     12.8 Attorneys' Fees. Should suit be brought to enforce or interpret any
part of this Agreement, the prevailing party will be entitled to recover, as an
element of the costs of suit and not as damages, reasonable attorneys' fees to
be fixed by the court (including without limitation, costs, expenses and fees on
any appeal). The prevailing party will be entitled to recover its costs of suit,
regardless of whether such suit proceeds to final judgment.

     12.9 Notices. All notices and other communications required or permitted
under this Agreement will be in writing and will be either hand delivered in
person, sent by telecopier, sent by certified or registered first class mail,
postage pre-paid, or sent by nationally recognized express courier service. Such
notices and other communications will be effective upon receipt if hand
delivered or sent by telecopier (if sent by telecopier prior to 5:00 p.m. local
time at the location of the addressee; otherwise on the next business day), four
(4) days after mailing if sent by mail, and one (l) business day after dispatch
if sent by express courier, to the following addresses, or such other addresses
as any party may notify the other parties in accordance with this Section:

          If to HNC:

                   HNC Software Inc.
                   5930 Cornerstone Court West
                   San Diego, CA  92121
                   Attention:  President
                   Fax Number:  (619) 452-3220

          with a copy to:

                   Fenwick & West, LLP
                   Two Palo Alto Square, Suite 800
                   Palo Alto, CA  94306
                   Attention:  Kenneth A. Linhares, Esq.
                   Fax Number:  (650) 494-1417

          If to OSI:

                   Open Solutions Inc.
                   300 Winding Brook Drive
                   Glastonbury, CT  06033
                   Attention:  President
                   Fax Number:  (860) 652-7482

          with a copy to:

                   Hale and Dorr LLP
                   60 State Street
                   Boston, MA  02109
                   Attention:  Mark G. Borden, Esq.
                   Fax Number:  (617) 526-5000

or to such other address as a party may have furnished to the other parties in
writing pursuant to this Section 12.9.


                                      A-41

<PAGE>   222

     12.10 Construction of Agreement. This Agreement has been negotiated by the
respective parties hereto and their attorneys and the language hereof will not
be construed for or against either party. A reference to a Section or an exhibit
will mean a Section in, or exhibit to, this Agreement unless otherwise
explicitly set forth. The titles and headings herein are for reference purposes
only and will not in any manner limit the construction of this Agreement which
will be considered as a whole.

     12.11 No Joint Venture. Nothing contained in this Agreement will be deemed
or construed as creating a joint venture or partnership between any of the
parties hereto. No party is by virtue of this Agreement authorized as an agent,
employee or legal representative of any other party. No party will have the
power to control the activities and operations of any other and their status is,
and at all times will continue to be, that of independent contractors with
respect to each other. No party will have any power or authority to bind or
commit any other. No party will hold itself out as having any authority or
relationship in contravention of this Section.

     12.12 Further Assurances. Each party agrees to cooperate fully with the
other parties and to execute such further instruments, documents and agreements
and to give such further written assurances as may be reasonably requested by
any other party to evidence and reflect the transactions described herein and
contemplated hereby and to carry into effect the intents and purposes of this
Agreement.

     12.13 Absence of Third Party Beneficiary Rights. No provisions of this
Agreement are intended, nor will be interpreted, to provide or create any third
party beneficiary rights or any other rights of any kind in any client,
customer, affiliate, stockholder, partner or any party hereto or any other
person or entity unless specifically provided otherwise herein, and, except as
so provided, all provisions hereof will be personal solely between the parties
to this Agreement; provided, however, that the provisions of Section 6.7 of this
Agreement will be for the benefit of, and will be binding upon, any OSI
Indemnified Parties (as defined in Section 6.7.1).

     12.14 Public Announcement. Upon execution of this Agreement, HNC and OSI
will issue a press release approved by both parties announcing the Merger (the
"INITIAL PRESS RELEASE"). Thereafter, HNC may issue such press releases, and
make such other disclosures regarding the Merger, as it determines are required
under applicable securities laws or regulatory rules. Prior to the publication
of the Initial Press Release, neither party will make any public announcement
relating to this Agreement or the transactions contemplated hereby (except as
may be required by law) and OSI will use its reasonable efforts to prevent any
trading in HNC Common Stock by its officers, directors and employees of which it
is aware. Neither HNC nor OSI will make any disclosures regarding this Agreement
or the Merger that would jeopardize HNC's ability to timely and lawfully
register the issuance of shares of HNC Common Stock in the Merger on the Form
S-4.

     12.15 Disclosure Letter. The OSI Disclosure Letter shall be arranged in
separate parts corresponding to the numbered and lettered sections contained in
Article 3, and the information disclosed in any numbered or lettered part shall
be deemed to relate to and to qualify only the particular representation or
warranty set forth in the corresponding numbered or lettered Section in Article
3, and shall not be deemed to relate to or to qualify any other representation
or warranty unless it is reasonably apparent from the information set forth in
OSI Disclosure Schedule, that such information qualifies another representation
or warranty of OSI in Article 3.

     12.16 Confidentiality. OSI and HNC each confirm that they have entered into
the Confidentiality Agreement and that they are each bound by, and will abide
by, the provisions of such Confidentiality Agreement (except that HNC will cease
to be bound by the Confidentiality Agreement after the Merger becomes
effective). If this Agreement is terminated, all copies of documents containing
confidential information of a disclosing party will be returned by the receiving
party to the disclosing party or be destroyed, as provided in the
Confidentiality Agreement.

     12.17 Entire Agreement. This Agreement and the exhibits hereto, the letter
of OSI referenced in Section 3.22 and that certain letter agreement by and among
the parties hereto dated as of the Agreement Date, constitute the entire
understanding and agreement of the parties hereto with respect to the subject
matter hereof and supersede all prior and contemporaneous agreements or
understandings, inducements or conditions, express or implied, written or oral,
between the parties with respect hereto (including without limitation any term
sheets and that letter agreement dated August 13, 1998 executed by HNC and OSI)
other than the Confidentiality Agreement. The express terms of this Agreement
control and supersede any course of performance or usage of the trade
inconsistent with any of the terms hereof.


                                      A-42

<PAGE>   223

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of 
the date first above written.



HNC SOFTWARE INC                             OPEN SOLUTIONS INC.


By: /s/ Robert L. North                      By: /s/ Douglas K. Anderson
   --------------------------------             --------------------------------
   Robert L. North, President                   Douglas K. Anderson, 
                                                Chief Executive Officer


OAHU TRANSACTION CORP.


By: /s/ Raymond V. Thomas
   --------------------------------
   Raymond V. Thomas, President





            [SIGNATURE PAGE TO AGREEMENT AND PLAN OF REORGANIZATION]


                                      A-43

<PAGE>   224

                                LIST OF EXHIBITS

<TABLE>
<S>            <C>
Exhibit A      Escrow Agreement
Exhibit B      Restated Certificate of Incorporation of Surviving Corporation
Exhibit C      Bylaws of Surviving Corporation
Exhibit D      OSI Affiliate Agreement
Exhibit E      Summary of Principal Terms Described in Section 6.5
Exhibit F      Matters to be Covered in the Opinion of Fenwick & West, LLP
Exhibit G      Matters to be Covered in the Opinion of Hale and Dorr LLP
                 (and, in certain cases Shipman & Goodwin)
Exhibit H      Non-Competition Agreement
</TABLE>

<PAGE>   225

                                   APPENDIX B

                        DELAWARE GENERAL CORPORATION LAW

                     SUBCHAPTER IX. MERGER OR CONSOLIDATION

           262. APPRAISAL RIGHTS.--(a) Any stockholder of a corporation of this
State who holds shares of stock on the date of the making of a demand pursuant
to subsection (d) of this section with respect to such shares, who continuously
holds such shares through the effective date of the merger or consolidation, who
has otherwise complied with subsection (d) of this section and who has neither
voted in favor of the merger or consolidation nor consented thereto in writing
pursuant to Section 228 of this title shall be entitled to an appraisal by the
Court of Chancery of the fair value of the stockholder's shares of stock under
the circumstances described in subsections (b) and (c) of this section. As used
in this section, the word "stockholder" means a holder of record of stock in a
stock corporation and also a member of record of a nonstock corporation' the
words "stock" and "share" mean and include what is ordinarily meant by those
words and also membership or membership interest of a member of a nonstock
corporation; and the words "depository receipt" mean a receipt or other
instrument issued by a depository representing an interest in one or more
shares, or fractions thereof, solely of stock of a corporation, which stock is
deposited with the depository.

           (b) Appraisal rights shall be available for the shares of any class
or series of stock of a constituent corporation in a merger or consolidation to
be effected pursuant to Section 251 (other than a merger effected pursuant to
Section 251(g) of this title), Section 252, Section 254 257, Section 258,
Section 263 or Section 264 of this title:

           (1) Provided, however, that no appraisal rights under this section
shall be available for the shares of any class or series of stock, which stock,
or depository receipts in respect thereof, at the record date fixed to determine
the stockholders entitled to receive notice of and to vote at the meeting of
stockholders to act upon the agreement of merger or consolidation, were either
(i) listed on a national securities exchange or designated as a national market
system security on an interdealer quotation system by the National Association
of Securities Dealers, Inc. or (ii) held of record by more than 2,000 holders;
and further provided that no appraisal rights shall be available for any shares
of stock of the constituent corporation surviving a merger if the merger did not
require for its approval the vote of the stockholders of the surviving
corporation as provided in subsection (f) of Section 251 of this title.

           (2) Notwithstanding paragraph (1) of this subsection, appraisal
rights under this section shall be available for the shares of any class or
series of stock of a constituent corporation if the holders thereof are required
by the terms of an agreement of merger or consolidation pursuant to
Sections 251, 252, 254, 257, 258, 263 and 264 of this title to accept for
such stock any thing except:

                    a. Shares of stock of the corporation surviving or resulting
from such merger or consolidation, or depository receipts in respect thereof;

                    b. Shares of stock of any other corporation, or depository
receipts in respect thereof, which shares of stock (or depository receipts in
respect thereof) or depository receipts at the effective date of the merger or
consolidation will be either listed on a national securities exchange or
designated as a national market system security on an interdealer quotation
system by the National Association of Securities Dealers, Inc. or held of record
by more than 2,000 holders.

                    c. Cash in lieu of fractional shares or fractional
depository receipts described in the foregoing subparagraphs a. and b. of this
paragraph; or

                    d. Any combination of the shares of stock, depository
receipts and cash in lieu of fractional shares or fractional depository receipts
described in the foregoing subparagraphs a., b. and c. of this paragraph.



                                      B-1
<PAGE>   226

           (3) In the event all of the stock of a subsidiary Delaware
corporation party to a merger effected under Section253 of this title is not
owned by the parent corporation immediately prior to the merger, appraisal
rights shall be available for the shares of the subsidiary Delaware corporation.

           (c) Any corporation may provide in its certificate of incorporation
that appraisal rights under this section shall be available for the shares of
any class or series of its stock as a result of an amendment to its certificate
of incorporation, any merger or consolidation in which the corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation. If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.

           (d) Appraisal rights shall be perfected as follows:

                    (1) If a proposed merger or consolidation for which
appraisal rights are provided under this section is to be submitted for approval
at a meeting of stockholders, the corporation, not less than 20 days prior to
the meeting, shall notify each of its stockholders who was such on the record
date for such meeting with respect to shares for which appraisal rights are
available pursuant to subsections (b) or (c) hereof that appraisal rights are
available for any or all of the shares of the constituent corporations, and
shall include in such notice a copy of this section. Each stockholder electing
to demand the appraisal of his shares shall deliver to the corporation, before
the taking of the vote on the merger or consolidation, a written demand for
appraisal of his shares. Such demand will be sufficient if it reasonably informs
the corporation of the identity of the stockholder and that the stockholder
intends thereby to demand the appraisal of his shares. A proxy or vote against
the merger or consolidation shall not constitute such a demand. A stockholder
electing to take such action must do so by a separate written demand as herein
provided. Within 10 days after the effective date of such merger or
consolidation, the surviving or resulting corporation shall notify each
stockholder of each constituent corporation who has complied with this
subsection and has not voted in favor of or consented to the merger or
consolidation of the date that the merger or consolidation has become effective;
or

                    (2) If the merger or consolidation was approved pursuant to
Section 228 or Section 253 of this title, each constituent corporation, either
before the effective date of the merger or consolidation or within ten days
thereafter, shall notify each of the holders of any class or series of stock of
such constituent corporation who are entitled to appraisal rights of the
approval of the merger or consolidation and that appraisal rights are available
for any or all shares of such class or series of stock of such constituent
corporation, and shall include in such notice a copy of this section; provided
that, if the notice is given on or after the effective date of the merger or
consolidation, such notice shall be given by the surviving or resulting
corporation to all such holders of any class or series of stock of a constituent
corporation that are entitled to appraisal rights. Such notice may, and, if
given on or after the effective date of the merger or consolidation, shall, also
notify such stockholders of the effective date of the merger or consolidation.
Any stockholder entitled to appraisal rights may, within 20 days after the date
of mailing of such notice, demand in writing from the surviving or resulting
corporation the appraisal of such holder's shares. Such demand will be
sufficient if it reasonably informs the corporation of the identity of the
stockholder and that the stockholder intends thereby to demand the appraisal of
such holder's shares. If such notice did not notify stockholders of the
effective date of the merger or consolidation, either (i) each such constituent
corporation shall send a second notice before the effective date of the merger
or consolidation notifying each of the holders of any class or series of stock
of such constituent corporation that are entitled to appraisal rights of the
effective date of the merger or consolidation or (ii) the surviving re resulting
corporation shall send such a second notice to all such holders on or within 10
days after such effective date; provided, however, that is such second notice is
sent more than 20 days following the sending of the first notice, such second
notice need only be sent to each stockholder who is entitled to appraisal rights
and who has demanded appraisal of such holder's charges in accordance with this
subsection. An affidavit of the secretary or assistant secretary or of the
transfer agent of the corporation that is required to give either notice that
such notice has been given shall, in the absence of fraud, be prima facie
evidence of the facts stated therein. For purposes of determining the
stockholders entitled to receive either notice, each constituent corporation may
fix, in advance, a record date that shall be not more than 10 days prior to the
date of the merger or consolidation, the record date shall be such effective
date. If no record date is fixed and the notice is given prior to the effective
date, the record date shall be the close of business on the day next preceding
the day on which the notice is given.



                                      B-2
<PAGE>   227

           (e) Within 120 days after the effective date of the merger or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with subsections (a) and (d) hereof and who is otherwise entitled to
appraisal rights, may file a petition in the Court of Chancery demanding a
determination of the value of the stock of all such stockholders.
Notwithstanding the foregoing, at any time within 60 days after the effective
date of the merger or consolidation, any stockholder shall have the right to
withdraw his demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
his written request for such a statement is received by the surviving or
resulting corporation or within 10 days after expiration of the period for
delivery of demands for appraisal under subsection (d) hereof, whichever is
later.

           (f) Upon the filing of any such petition by a stockholder, service of
a copy thereof shall be made upon the surviving or resulting corporation, which
shall within 20 days after such service file in the office of the Register in
Chancery in which the petition was filed a duly verified list containing the
names and addresses of all stockholders who have demanded payment for their
shares and with whom agreements as to the value of their shares have not been
reached by the surviving or resulting corporation. If the petition shall be
filed by the surviving or resulting corporation, the petition shall be
accompanied by such a duly verified list. The Register in Chancery, if so
ordered by the Court, shall give notice of the time and place fixed for the
hearing of such petition by registered or certified mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein stated. Such notice shall also be given by 1 or more publications at
least 1 week before the day of the hearing, in a newspaper of general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems advisable. The forms of the notices by mail and by publication
shall be approved by the Court, and the costs thereof shall be borne by the
surviving or resulting corporation.

           (g) At the hearing on such petition, the Court shall determine the
stockholders who have complied with this section and who have become entitled to
appraisal rights. The Court may require the stockholders who have demanded an
appraisal for their shares and who hold stock represented by certificates to
submit their certificates of stock to the Register in Chancery for notation
thereon of the pendency of the appraisal proceedings; and if any stockholder
fails to comply with such direction, the Court may dismiss the proceedings as to
such stockholder.

           (h) After determining the stockholders entitled to an appraisal, the
Court shall appraise the shares, determining their fair market value exclusive
of any element of value arising from the accomplishment or expectation of the
merger or consolidation, together with a fair rate of interest, if any, to be
paid upon the amount determined to be the fair value. In determining such fair
value, the Court shall take into account all relevant factors. In determining
the fair rate of interest, the Court may consider all relevant factors,
including the rate of interest which the surviving or resulting corporation
would have had to pay to borrow money during the pendency of the proceeding.
Upon application by the surviving or resulting corporation or by any stockholder
entitled to participate in the appraisal proceeding, the Court may, in its
discretion, permit discovery or other pretrial proceedings and may proceed to
trial upon the appraisal prior to the final determination of the stockholder
entitled to an appraisal. Any stockholder whose name appears on the list filed
by the surviving or resulting corporation pursuant to subsection (f) of this
section and who has submitted his certificates of stock to the Register in
Chancery, if such is required, may participate fully in all proceedings until it
is finally determined that he is not entitled to appraisal rights under this
section.

           (i) The Court shall direct the payment of the fair value of the
shares, together with interest, if any, by the surviving or resulting
corporation to the stockholders entitled thereto. Interest may be simple or
compound, as the Court may direct. Payment shall be so made to each such
stockholder, in the case of holders of uncertificated stock forthwith, and the
case of holders of shares represented by certificates upon the surrender to the
corporation of the certificates representing such stock. The Court's decree may
be enforced as other decrees in the Court of Chancery may be enforced, whether
such surviving or resulting corporation be a corporation of this Sate or of any
state.



                                      B-3
<PAGE>   228

           (j) The costs of the proceeding may be determined by the Court and
taxed upon the parties at the Court deems equitable in the circumstances. Upon
application of a stockholder, the Court may order all or a portion of the
expenses incurred by any stockholder in connection with the appraisal
proceeding, including, without limitation, reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all
the shares entitled to an appraisal.

           (k) From and after the effective date of the merger or consolidation,
no stockholder who has demanded his appraisal rights as provided in subsection
(d) of this section shall be entitled to vote such stock for any purpose or to
receive payment of dividends or other distributions on the stock (except
dividends or other distributions payable to stockholders of record at a date
which is prior to the effective date of the merger or consolidation); provided,
however, that if no petition for an appraisal shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to the surviving or resulting corporation a written withdrawal of his demand for
an appraisal and an acceptance of the merger or consolidation, either within 60
days after the effective date of the merger or consolidation as provided in
subsection (e) of this section or thereafter with the written approval of the
corporation, then the right of such stockholder to an appraisal shall cease.
Notwithstanding the foregoing, no appraisal proceeding in the Court of Chancery
shall be dismissed as to any stockholder without the approval of the Court, and
such approval may be conditioned upon such terms as the Court deems just.

           (l) The shares of the surviving or resulting corporation to which the
shares of such objecting stockholders would have been converted has they
assented to the merger or consolidation shall have the status of authorized and
unissued shares of the surviving or resulting corporation.




                                      B-4
<PAGE>   229


                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20.  INDEMNIFICATION OF DIRECTORS.

           As permitted by Section 145 of the Delaware General Corporation Law,
the Registrant's Certificate of Incorporation includes a provision that
eliminates the personal liability of its directors to the Registrant or its
stockholders for monetary damages for breach of fiduciary duty as a director,
except for liability: (i) for any breach of the director's duty of loyalty to
the corporation or its stockholders; (ii) for acts or omissions not in good
faith or that involve intentional misconduct or a knowing violation of law;
(iii) under Section 174 of the Delaware General Corporation Law; or (iv) for any
transaction from which the director derived an improper personal benefit. In
addition, as permitted by Section 145 of the Delaware General Corporation Law,
the Bylaws of the Registrant provide that: (i) the Registrant is required to
indemnify its directors and officers, as well as directors and officers of any
other corporation, partnership, joint venture, trust, employee benefit plan or
other enterprise when they are serving in such capacities at the request of the
Registrant, to the fullest extent permitted by the Delaware General Corporation
Law; (ii) the Registrant may, in its discretion, indemnify other officers,
employees and agents as set forth in the Delaware General Corporation Law; (iii)
upon receipt of an undertaking to repay such advances if indemnification is
determined to be unavailable, the Registrant is required to advance expenses, as
incurred, to its directors and officers to the fullest extent permitted by the
Delaware General Corporation Law in connection with a proceeding (except that
the Registrant is not required to advance expenses to a person against whom it
brings a claim for breach of the duty of loyalty, failure to act in good faith,
intentional misconduct, knowing violation of law or deriving an improper
personal benefit); (iv) the rights conferred in the Bylaws are not exclusive and
the Registrant is authorized to enter into indemnification agreements with its
directors, officers and employees and agents; (v) the Registrant may not
retroactively amend the Bylaw provisions in a way that adversely affects the
indemnification provided thereunder.

           The Registrant's policy is to enter into indemnity agreements with
each of its directors and officers. The indemnity agreements provide that
directors and officers will be indemnified and held harmless against all
expenses (including attorneys' fees), judgments, fines, ERISA excise taxes or
penalties and settlement amounts paid or reasonably incurred by them in any
action, suit or proceeding, including any derivative action by or in the right
of the Registrant, on account of their services as a director or officer of the
Registrant or as directors or officers of any other corporation, partnership or
enterprise when they are serving in such capacities at the request of the
Registrant; except that no indemnity is provided in a derivative action in which
such director or officer is finally adjudged by a court to be liable to the
Registrant due to willful misconduct in the performance of his or her duty to
the Registrant, unless the court determines that such director or officer is
entitled to indemnification. The Registrant will not be obligated pursuant to
the agreements to indemnify or advance expenses to an indemnified party with
respect to proceedings or claims (i) initiated voluntarily by the indemnified
party and not by way of defense, except with respect to a proceeding authorized
by the Board of Directors and successful proceedings brought to enforce a right
to indemnification and/or advancement of expenses under the indemnity
agreements; (ii) for any amounts paid in settlement of a proceeding unless the
Registrant consents to such settlement; (iii) on account of any suit in which
judgment is rendered against the indemnified party for an accounting of profits
made from the purchase or sale by the indemnified party of securities of the
Registrant pursuant to the provisions of Section 16(b) of the Exchange Act and
related laws and regulations; (iv) on account of conduct by an indemnified party
that is finally adjudged to have been in bad faith or conduct that the
indemnified party did not reasonably believe to be in, or not opposed to, the
best interests of the Registrant; (v) on account of any criminal action or
proceeding arising out of conduct that the indemnified party had reasonable
cause to believe was unlawful; or (vi) if a final decision by a court having
jurisdiction in the matter shall determine that such indemnification is not
lawful.

           The indemnity agreement requires a director or officer to reimburse
the Registrant for expenses advanced only if and to the extent it is ultimately
determined that the director or executive officer is not entitled, under
Delaware law, the Registrant's Certificate of Incorporation, the Registrant's
Bylaws, his or her indemnity agreement or otherwise to be indemnified for such
expenses. The indemnity agreement provides that it is not exclusive of any
rights a director or executive officer may have under the Certificate of
Incorporation, the Bylaws, other agreements, any majority-in-interest vote of
the stockholders or vote of disinterested directors, Delaware law, or otherwise.

           The indemnification provision in the Bylaws, and the indemnity
agreements entered into between the Registrant and its directors and officers,
may be sufficiently broad to permit indemnification of the Registrant's
directors and officers for liabilities arising under the Securities Act.



                                      II-1
<PAGE>   230

           The indemnity agreements require the Registrant to maintain director
and officer liability insurance to the extent readily available. The Registrant
currently carries a director and officer insurance policy.

ITEM 21.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.

        (a)  The following exhibits are filed herewith:

   
<TABLE>
<CAPTION>
       EXHIBIT
       NUMBER        EXHIBIT TITLE
       ------        -------------
<S>                <C>                                                            
         2.01      Agreement and Plan of Reorganization by and among HNC
                   Software Inc., Oahu Transaction Corp. and Open Solutions
                   Inc., dated September 16, 1998 (included as Appendix A to the
                   Proxy Statement/Prospectus).

         2.02      Agreement and Plan of Reorganization dated as of July 19,
                   1996 by and among the Registrant, HNC Merger Corp. and Risk
                   Data Corporation, as amended. (Incorporated by reference to
                   Exhibit Number 2.01 to Registrant's Current Report on Form
                   8-K filed on September 12, 1996, as amended (the "Risk Data
                   8-K").)

         2.03      Agreement of Merger dated August 30, 1996 by and between HNC
                   Merger Corp. and Risk Data Corporation. (Incorporated by
                   reference to Exhibit Number 2.02 to the Risk Data 8-K).

         2.04      Exchange Agreement dated as of October 25, 1996 by and among
                   the Registrant, Retek Distribution Corporation and the
                   shareholders of Retek Distribution Corporation. (Incorporated
                   by reference to Exhibit Number 2.01 to Registrant's Current
                   Report on Form 8-K filed on December 12, 1996 (the "Retek
                   8-K").)

         2.05      Form of Option Exchange Agreement between the Registrant and
                   each person who held outstanding options to purchase shares
                   of Retek Distribution Corporation on November 29, 1996.
                   (Incorporated by reference to Exhibit Number 2.02 to the
                   Retek 8-K).

         2.06      Agreement and Plan of Reorganization dated as of July 14,
                   1997 by and among the Registrant, FW1 Acquisition Corp.,
                   CompReview, Inc., Robert L. Kaaren and Mishel E. Munnayer,
                   a.k.a. Michael Munayyer, Trustee of the Michael Munayyer
                   Trust dated August 11, 1995. (Pursuant to Item 601(b)(2) of
                   Regulation S-K, certain schedules have been omitted but will
                   be furnished supplementally to the Commission upon request.)
                   (Incorporated by reference to Exhibit Number 2.01 to
                   Registrant's Current Report on Form 8-K filed on December 15,
                   1997 (the "CompReview 8-K").)

         2.07      Agreement of Merger dated as of November 28, 1997 by and
                   between FW1 Acquisition Corp. and CompReview, Inc.
                   (Incorporated by reference to Exhibit Number 2.02 to the
                   CompReview 8-K.)

         2.08      Agreement and Plan of Reorganization dated as of April 6,
                   1998 by and among the Registrant, FW2 Merger Corp. and the
                   shareholders of Financial Technology, Inc. (Incorporated by
                   reference to Exhibit Number 2.01 to Registrant's Current
                   Report on Form 8-K on April 22, 1998 (the "FTI 8-K").)

         3(i).01   Registrant's Restated Certificate of Incorporation filed with
                   the Secretary of State of Delaware on June 13, 1996.
                   (Incorporated by reference to Exhibit Number 3(i).04 to
                   Registrant's Quarterly Report on Form 10-Q for the quarter
                   ended June 30, 1996 (the "Second Quarter 1996 10-Q").)

         3(ii).02  Registrant's Bylaws, as amended. (Incorporated by reference
                   to Exhibit Number 3(i).01 to Registrant's Quarterly Report on
                   Form 10-Q for the quarter ended June 30, 1998 (the "Second
                   Quarter 1998 10-Q").)

         4.01      Form of Specimen Certificate for Registrant's Common Stock.
                   (Incorporated by reference to Exhibit Number 4.01 to
                   Registrant's Form S-1 Registration Statement, as amended
                   (File No. 33-91932) (the "IPO S-1").)

         4.02      Registration Rights Agreement dated as of August 30, 1996 by
                   and among the Registrant and the former shareholders of Risk
                   Data Corporation. (Incorporated by reference to Exhibit 4.01
                   to the Risk Data 8-K.)

         4.03      Registration Rights Agreement dated as of October 25, 1996 by
                   and among the Registrant and the former shareholders of Retek
                   Distribution Corporation. (Incorporated by reference to
                   Exhibit Number 4.01 to the Retek 8-K.)

</TABLE>
    


                                      II-2
<PAGE>   231


   
<TABLE>
<CAPTION>
       EXHIBIT
       NUMBER        EXHIBIT TITLE
       ------        -------------
<S>                <C>                                                            

         4.04      Amendment No. 1 to the Registration Rights Agreement dated as
                   of February 24, 1997 by and between the Registrant and the
                   former shareholders of Retek Distribution Corporation.
                   (Incorporated by reference to Exhibit Number 4.06 to
                   Registrant's Annual Report on Form 10-K, as amended, for the
                   year ended December 31, 1996 (the "1996 10-K").)

         4.05      Registration Rights Agreement dated as of November 28, 1997
                   by and among the Registrant and the former shareholders of
                   CompReview, Inc. (Incorporated by reference to Exhibit Number
                   4.01 to the CompReview 8-K.)

         4.06      Registration Rights Agreement dated as of April 6, 1998 by
                   and among the Registrant and the former shareholders of
                   Financial Technology, Inc. (Incorporated by reference to
                   Exhibit Number 4.01 to the FTI 8-K.)

         *5.01     Opinion of Fenwick & West LLP regarding legality of the
                   securities being registered.

         *8.01     Opinion of Fenwick & West LLP regarding taxation.

         *8.02     Opinion of Hale and Dorr LLP regarding taxation.

         10.01     Registrant's 1987 Stock Option Plan and related documents.
                   (Incorporated by reference to Exhibit Number 8-K.)

        *10.02     Registrant's 1995 Equity Incentive Plan and related
                   documents, as amended. (1)

         10.03     Registrant's 1995 Directors Stock Option Plan and related
                   documents. (Incorporated by reference to Exhibit Number 10.03
                   to the IPO S-1.) (1)

         10.04     Registrant's 1995 Employee Stock Purchase Plan and related
                   documents. (Incorporated by reference to Exhibit Number 10.04
                   to the IPO S-1.) (1)

         10.05     Registrant's 1998 Stock Option Plan. (Incorporated by
                   reference to Exhibit Number 10.02 to the Second Quarter 1998
                   10-Q.) (1)

         10.06     Form of Indemnity Agreement entered into by Registrant with
                   each of its directors and executive officers. (Incorporated
                   by reference to Exhibit Number 10.08 to the IPO S-1.) (1)

         10.07     Office Building Lease dated as of December 1, 1993, as
                   amended effective February 1, 1994 and June 1, 1994, between
                   Registrant and PacCor Partners. (Incorporated by reference to
                   Exhibit Number 10.09 to the IPO S-1.)

         10.08     Loan and Security Agreement dated as of July 11, 1997,
                   between Registrant and Wells Fargo Bank, National
                   Association. (Incorporated by reference to Exhibit Number
                   10.01 to Registrant's Quarterly Report on Form 10-Q, as
                   amended, for the quarter ended June 30, 1997 (the "Second
                   Quarter 1997 10-Q").)

         10.09     Office Building Lease dated as of May 30, 1997, between Retek
                   Information Systems, Inc. and Midwest Real Estate Holdings,
                   Inc. (Incorporated by reference to Exhibit Number 10.02 to
                   the Second Quarter 1997 10-Q.)

         10.10     Office Building Lease dated as of June 17, 1996, between
                   Registrant and Williams Properties I, LLC & Williams
                   Properties II, LLC. (Incorporated by reference to Exhibit
                   Number 10.12 to the 1996 10-K.)

         10.11     Employment Agreement dated as of September 10, 1996, by and
                   between Aptex Software Inc. and Michael A. Thiemann.
                   (Incorporated by reference to Exhibit Number 10.13 to the
                   1996 10-K.) (1)

         10.12     Investors' Rights Agreement dated as of September 10, 1996,
                   by and among Aptex Software, Inc., HNC Software Inc. and
                   Michael A. Thiemann. (Incorporated by reference to Exhibit
                   Number 10.14 to the 1996 10-K.) (1)

         10.13     Restricted Stock Purchase Agreement dated as of September 10,
                   1996, by and between Aptex Software Inc. and Michael
                   Thiemann. (Incorporated by reference to Exhibit Number 10.15
                   to the 1996 10-K.) (1)
</TABLE>
    


                                      II-3
<PAGE>   232

   
<TABLE>
<CAPTION>
       EXHIBIT
       NUMBER        EXHIBIT TITLE
       ------        -------------
<S>                <C>                                                            

         10.14     Aptex Software Inc.'s 1996 Equity Incentive Plan and related
                   documents. (Incorporated by reference to Exhibit Number 10.16
                   to the 1996 10-K.) (1)

         10.15     Office Building Lease dated June 17, 1993, between
                   Linsco/Private Ledger Corp. and PacCor Partners and
                   Assignment of such lease to the Registrant. (Incorporated by
                   reference to Exhibit Number 10.17 to Registrant's Annual
                   Report on Form 10-K, as amended, for the year ended December
                   31, 1997.)

         *10.16    First Amendment to Lease Agreement between Williams 
                   Properties I, LLC and Williams Properties II, LLC and the 
                   Registrant dated June 17, 1996, amended October 28, 1997.

         *10.17    Second Amendment to Lease between the Registrant and W9/PC 
                   Real Estate Limited Partnership dated as of April 13, 1998.

         *21.01    List of the Registrant's subsidiaries.

         *23.01    Consent of Fenwick & West LLP (included in Exhibit 5.01).

         *23.02    Consent of Fenwick & West LLP (included in Exhibit 8.01).

         *23.03    Consent of Hale and Dorr LLP (included in Exhibit 8.02).

         23.04     Consent of independent accountants.

         23.05     Consent of independent accountants.

         24.01     Power of Attorney (see Page II-6 of this Registration 
                   Statement as filed on September 29, 1998).

         *99.01    Form of Proxy for use at the OSI Special Meeting.

</TABLE>
    

- ----------

(1)  Management contract or compensatory plan or arrangement. 

   
*    Filed herewith
    

          (b)  Financial Statement Schedules

               Schedule II -- HNC Valuation and Qualifying Accounts and Reserves
               for the years ended December 31, 1995, 1996 and 1997.

               All other schedules are omitted because they are not applicable
               or not required or because the required information is shown in
               the HNC Consolidated Financial Statements or notes thereto.

               Schedule II -- OSI Valuation and Qualifying Accounts and Reserves
               for the years ended December 31, 1995, 1996 and 1997.

               All other schedules are omitted because they are not applicable
               or not required or because the required information is shown in
               the OSI Consolidated Financial Statements or notes thereto.

ITEM 22.  UNDERTAKINGS.

           (1)    The Registrant hereby undertakes:

                  (a) To file, during any period in which offers or sales are
being made, a post-effective amendment to this registration statement:

                             (i)  To include any prospectus required by Section 
10(a)(3) of the Securities Act of 1933;

                             (ii) To reflect in the prospectus any facts or
events arising after the effective date of the registration statement (or the
most recent post-effective amendment thereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in the
registration statement. Notwithstanding the foregoing, any increase or decrease
in volume of securities offered (if the total dollar value of securities offered
would not exceed that which was registered) and any deviation from the low or
high end of the estimated maximum offering range may be reflected in the form of
prospectus filed with the Commission pursuant to Rule 424(b) if, in the
aggregate, the changes in volume and price represent no more than a 20 percent
change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective registration statement;

                             (iii) To include any material information with
respect to the plan of distribution not previously disclosed in the registration
statement or any material change to such information in the registration
statement.



                                      II-4
<PAGE>   233

                  (b) That, for the purpose of determining any liability under
the Securities Act of 1933, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.

                  (c) To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

           (2) The Registrant hereby undertakes as follows: that prior to any
public reoffering of the securities registered hereunder through use of a
prospectus which is a part of this Registration Statement, by any person or
party who is deemed to be an underwriter within the meaning of Rule 145(c), the
Registrant undertakes that such reoffering prospectus will contain the
information called for by the applicable registration form with respect to
reofferings by persons who may be deemed underwriters, in addition to the
information called for by the other Items of the applicable form.

           (3) The Registrant undertakes that every prospectus (i) that is filed
pursuant to paragraph (1) immediately proceeding, or (ii) that purports to meet
the requirements of Section 10(a)(3) of the Act and is used in connection with
an offering of securities subject to Rule 415, will be filed as a part of an
amendment to the Registration Statement and will not be used until such
amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, as amended (the "Securities Act"), each such
post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

           (4) The Registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the Prospectus/Proxy
Statement pursuant to Items 4, 10(b), 11 or 13 of this Form, within one business
day of receipt of such request, and to send the incorporated documents by first
class mail or other equally prompt means and (ii) to arrange or provide for a
facility in the U.S. for the purpose of responding to such requests. This
includes information contained in documents filed subsequent to the effective
date of the Registration Statement through the date of responding to the
request.

           (5) The Registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the Registration Statement when it became effective.

           (6) Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers and controlling persons
of the Registrant pursuant to the provisions discussed in Item 6 hereof, or
otherwise, the Registrant has been advised that in the opinion of the Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered hereby, the Registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed by
the final adjudication of such issue.



                                      II-5
<PAGE>   234


                                   SIGNATURES

   
           Pursuant to the requirements of the Securities Act, the Registrant
has duly caused this Amendment to Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of San Diego,
State of California, on December 8, 1998.
    

                                    HNC SOFTWARE INC.


                                    By:    /s/ Raymond V. Thomas
                                           -------------------------------------
                                           Raymond V. Thomas
                                           Chief Financial Officer

   
           Pursuant to the requirements of the Securities Act, this Amendment to
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

<TABLE>
<CAPTION>
                      NAME                                                 TITLE                                       DATE
                      ----                                                 -----                                       ----
<S>                                                <C>                                                        <C>

PRINCIPAL EXECUTIVE OFFICER:

/s/ Robert L. North*                               President, Chief Executive Officer and Director              December 8, 1998
- ---------------------------------------------
Robert L. North

PRINCIPAL FINANCIAL OFFICER AND
PRINCIPAL ACCOUNTING OFFICER:

/s/ Raymond V. Thomas                              Vice President, Finance and Administration, Chief            December 8, 1998
- ---------------------------------------------      Financial Officer and Secretary
Raymond V. Thomas

ADDITIONAL DIRECTORS:

                                                   Director                                                     __________, 1998
- ---------------------------------------------
Edward K. Chandler

/s/ Oliver D. Curme*                               Director                                                     December 8, 1998
- ---------------------------------------------
Oliver D. Curme

                                                   Director                                                     __________, 1998
- ---------------------------------------------
Thomas F. Farb

/s/ Charles H. Gaylord, Jr.*                       Director                                                     December 8, 1998
- ---------------------------------------------
Charles H. Gaylord, Jr.


*By: /s/ Raymond V. Thomas
     ----------------------------------------
     Raymond V. Thomas
     Attorney-in-Fact

</TABLE>
    


                                      II-6
<PAGE>   235

                                HNC SOFTWARE INC.
          SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
                   FOR THE THREE YEARS ENDED DECEMBER 31, 1997



<TABLE>
<CAPTION>
                                 ALLOWANCE FOR    DEFERRED TAX
                                DOUBTFUL ACCOUNTS ASSET VALUATION
                                & SALES RETURNS   ALLOWANCE
                                ----------------  -----------
<S>                             <C>               <C>        
Balance at December 31, 1994     $   514,000      $ 4,238,000


          Provision                  529,000          702,000

          Write-off                 (472,000)              --

          Recovery                   (18,000)      (2,223,000)
                                 -----------      -----------

Balance at December 31, 1995         553,000        2,717,000

          Provision                  279,000               --

          Write-off                  (94,000)              --

          Recovery                   (29,000)      (2,717,000)
                                 -----------      -----------

Balance at December 31, 1996         709,000               --

          Provision                3,171,000               --

          Write-off                 (505,000)              --

          Recovery                  (175,000)              --
                                 -----------      -----------


Balance at December 31, 1997     $ 3,200,000      $        --
                                 ===========      ===========

</TABLE>



                                      S-1
<PAGE>   236


                               OPEN SOLUTIONS INC.
                                   SCHEDULE II


   
                              OPEN SOLUTIONS INC.
                       VALUATION AND QUALIFYING ACCOUNTS
                  FOR THE THREE YEARS ENDED DECEMBER 31, 1997
                  AND THE NINE MONTHS ENDED SEPTEMBER 30, 1998
                                 (IN THOUSANDS)
    

   
<TABLE>
<CAPTION>
                                                                             ADDITIONS
                                                        ------------------------------------------------------
                                         BALANCE AT     CHARGE TO     CHARGE TO       DEDUCTIONS     BALANCE AT
                                         BEGINNING OF   COSTS AND       OTHER           NET OF        END OF
       DESCRIPTION                       PERIOD         EXPENSES      ACCOUNTS        WRITE-OFFS      PERIOD
       -----------                       ------------   ---------     --------        ----------     ----------
<S>                                      <C>            <C>           <C>             <C>            <C>


ALLOWANCE FOR DOUBTFUL ACCOUNTS:
Years ended
   December 31, 1995 ................     $ --          $ --          $     --          $ --          $ --
   December 31, 1996 ................       --            86                --            --            86
   December 31, 1997 ................       86           239                --           111           214
Nine months ended September 30, 1998
   (unaudited) ......................      214           218                --          (122)          310

</TABLE>
    


                                      S-2
<PAGE>   237

                                 EXHIBIT INDEX

   
<TABLE>
<CAPTION>

       EXHIBIT 
       NUMBER        EXHIBIT TITLE
       ------        ------------- 
<S>                  <C> 
        2.01         Agreement and Plan of Reorganization by and among HNC 
                     Software Inc., Oahu Transaction Corp. and Open Solutions 
                     Inc., dated September 16, 1998 (included as Appendix A to 
                     the Proxy Statement/Prospectus).

        5.01         Opinion of Fenwick & West LLP regarding legality of the 
                     securities being registered.

        8.01         Opinion of Fenwick & West LLP regarding taxation.
    
        8.02         Opinion of Hale and Dorr LLP regarding taxation.

        10.02        Registrant's 1995 Equity Incentive Plan and related
                     documents, as amended.

        10.16        First Amendment to Lease Agreement between Williams 
                     Properties I, LLC & Williams Properties II, LLC and the 
                     Registrant dated June 17, 1996, amended October 28, 1997.

        10.17        Second Amendment to Lease between the Registrant and W9/PC 
                     Real Estate Limited Partnership dated as of April 13, 1998.
  
        21.01        List of the Registrant's Subsidiaries.

        23.01        Consent of Fenwick & West LLP (included in Exhibit 5.01).

        23.02        Consent of Fenwick & West LLP (included in Exhibit 8.01).

        23.03        Consent of Hale and Dorr LLP (included in Exhibit 8.02).

        23.04        Consent of independent accountants.

        23.05        Consent of independent accountants.

        24.01        Power of Attorney (see Page II-6 of this Registration 
                     Statement as filed on September 29, 1998).


        99.01        Form of Proxy for use at the OSI Special Meeting.
 
    
</TABLE>


<PAGE>   1

                                                                    EXHIBIT 5.01


                                December 18, 1998

HNC Software Inc.
5930 Cornerstone Court West
San Diego, CA 92121

Gentlemen/Ladies:

        At your request, we have examined the Registration Statement on Form S-4
(File Number 333-64527) (the "Registration Statement") filed by you, HNC
Software Inc. ("you" or the "Company") with the Securities and Exchange
Commission (the "Commission") on September 29, 1998, as subsequently amended, in
connection with the registration under the Securities Act of 1933, as amended,
of an aggregate of up to 2,956,618 shares of your Common Stock, $0.001 par value
(the "Stock"). The shares of the Stock are to be issued for outstanding shares
of Open Solutions Inc. common stock and upon exercise of options to purchase
shares of Stock into which options to purchase shares of Open Solutions Inc.
common stock are converted as described in the Registration Statement and the
Agreement and Plan of Reorganization dated as of September 16, 1998 by and among
Open Solutions Inc., Oahu Transaction Corp. and you, filed as an exhibit to the
Registration Statement (the "Agreement and Plan of Reorganization").

        In rendering this opinion, we have examined the following:

        (1)    the Registration Statement, together with the Exhibits filed as a
               part thereof and the Proxy Statement/Prospectus constituting a
               part thereof;

        (2)    Your registration statement on Form 8-A filed with the Commission
               on May 24, 1995;

        (3)    the minutes of meetings and actions by written consent of the
               Board of Directors of the Company that are contained in your 
               minute books that are in our possession;

        (4)    the stock records for the Company that you have provided to us
               (consisting of a list of outstanding options to purchase shares 
               of the Company's capital stock that was prepared by you and dated
               December 18, 1998 and a letter from the Company's transfer agent
               dated December 18, 1998 certifying as to the number of
               outstanding shares of Common Stock); and
        (5)    a Management Certificate addressed to us and dated of even date
               herewith executed by the Company containing certain factual and
               other representations.

        In our examination of documents for purposes of this opinion, we have
assumed, and express no opinion as to, the genuineness of all signatures on
original documents, the 

<PAGE>   2

December 8, 1998
Page 2



authenticity of all documents submitted to us as originals, the conformity to
originals of all documents submitted to us as copies, the legal capacity of all
natural persons executing the same, the lack of any undisclosed terminations,
modifications, waivers or amendments to any documents reviewed by us and the due
execution and delivery of all documents where due execution and delivery are
prerequisites to the effectiveness thereof.

        As to matters of fact relevant to this opinion, we have relied solely
upon our examination of the documents referred to above and have assumed the
current accuracy and completeness of the information included in the documents
referred to above. We have made no independent investigation or other attempt to
verify the accuracy of any of such information or to determine the existence or
non-existence of any other factual matters; however, we are not aware of any
facts that would cause us to believe that the opinion expressed herein is not
accurate.

        We are admitted to practice law in the State of California, and we
express no opinion herein with respect to the application or effect of the laws
of any jurisdiction other than the existing laws of the United States of America
and the State of California and (without reference to case law or secondary
sources) the existing Delaware General Corporation Law.

        Based upon the foregoing, it is our opinion that the 2,956,618 shares of
Stock to be issued by you, when issued and sold in accordance with the terms of
the Agreement and Plan of Reorganization and as provided in the relevant Proxy
Statement/Prospectus associated with the Registration Statement, will be validly
issued, fully paid and nonassessable.

        We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to all references to us, if any, in the
Registration Statement, the Proxy Statement/Prospectus constituting a part
thereof and any amendments thereto.

        This opinion speaks only as of its date and we assume no obligation to
update this opinion should circumstances change after the date hereof. This
opinion is intended solely for your use as an exhibit to the Registration
Statement for the purpose of the above sale of the Stock and is not to be relied
upon for any other purpose.

                                            Very truly yours,


                                            /s/ FENWICK & WEST LLP


<PAGE>   1


                                                                     EXHIBIT 8.1


                           [FENWICK & WEST LETTERHEAD]



                                December 8, 1998



VIA FEDEX DELIVERY

HNC SOFTWARE INC.
5930 Cornerstone Court West
San Diego, California  92121-3728

Attention: Board of Directors

               Re:      Exhibit Tax Opinion to the S-4 Registration Statement
                        Filed in Connection With the Merger Transaction
                        Involving HNC Software Inc. and Open Solutions Inc.

Ladies and Gentlemen:

               We have been requested to render this opinion concerning certain
matters of U.S. federal income tax law in connection with the proposed merger
(the transaction collectively referred to as the "MERGER") involving Open
Solutions Inc., a Delaware corporation ("OSI"), and Oahu Transaction Corp., a
Delaware corporation ("NEWCO") and a wholly-owned subsidiary of HNC Software
Inc., a Delaware corporation ("HNC"). The Merger is further described in and is
in accordance with the Securities and Exchange Commission Form S-4 Registration
Statement filed on September 29, 1998, and related Exhibits thereto, as
thereafter amended at any time to and including the date hereof (the "S-4
REGISTRATION STATEMENT"). Our opinion has been requested solely in connection
with the filing of the S-4 Registration Statement with the Securities and
Exchange Commission with respect to the Merger.

               The Merger is structured as a statutory merger of Newco with and
into OSI, with OSI surviving the merger and becoming a wholly-owned subsidiary
of HNC, all pursuant to the applicable corporate laws of the State of Delaware
and in accordance with the Agreement and Plan of Reorganization by and among
OSI, HNC and Newco, dated as of September 16, 1998, and exhibits thereto
(collectively, the "AGREEMENT"). Except as otherwise indicated, capitalized
terms used herein have the meanings set forth in the Agreement. All section
references, unless otherwise indicated, are to the Internal Revenue Code of
1986, as amended (the "CODE").

               We have acted as legal counsel to HNC in connection with the
Merger. As such, and for the purpose of rendering this opinion, we have examined
and are relying upon (without any independent investigation or review thereof)
the truth and accuracy, at all relevant times, of the statements, covenants,
representations and warranties contained in the following documents (including
all schedules and exhibits thereto), among others:


<PAGE>   2
HNC Software, Inc.
December 8, 1998
Page 2


        1. The S-4 Registration Statement (including exhibits thereto);

        2. The Agreement;

        3. An Officers' Tax Certificate of HNC and Newco dated December 8, 1998,
signed by an authorized officer of each of HNC and Newco and delivered to us
from HNC and Newco and incorporated herein by reference; a copy of this
Certificate of Officer is attached hereto as Exhibit A; and

        4. An Officer's Tax Certificate of OSI dated December 8, 1998, signed by
an authorized officer of OSI and delivered to us from OSI and incorporated
herein by reference; a copy of this Certificate of Officer is attached hereto as
Exhibit B.

        In addition, we have reviewed such other instruments and documents
related to the formation, organization and operation of OSI, HNC and Newco or
the consummation of the Merger and the transactions contemplated thereby as we
have deemed necessary or appropriate.

        In connection with rendering this opinion, we have obtained
representations and are relying thereon (without any independent investigation
or review thereof) that:

        (1) There is no plan or intention (a "PLAN") on the part of the OSI
shareholders to engage in any sale, exchange, transfer, pledge, disposition or
any other transaction that results in a direct or indirect transfer of the risk
of ownership to HNC, any person related to HNC, OSI, or any person related to
OSI (a "SALE"), of HNC stock to be issued in the Merger that, in the aggregate,
would reduce the OSI shareholders' ownership of HNC stock issued in the Merger
to a number of shares having an aggregate fair market value as of the Effective
Time of less than 50 percent (50%) of the aggregate fair market value,
immediately prior to the Merger, of all of the outstanding shares of OSI stock.
For these purposes, the determination of whether a person is related to HNC
and/or OSI shall be made in accordance with Treas. Reg. Section 1.368-1(e) and
Temp. Treas. Reg. Section 1.368-1T(e). In addition, shares of OSI stock with
respect to which Sales occur or have occurred during the Pre-Merger Period (as
defined in Exhibits A and B hereto) shall be considered shares of OSI stock that
are outstanding immediately prior to the Merger, are exchanged for HNC stock in
the Merger and are then disposed of in Sales pursuant to a Plan.

        (2) Following the Merger, OSI will hold at least 90 percent of the fair
market value of its and Newco's net assets, and at least 70 percent of the fair
market value of its and Newco's gross assets such that it will hold
substantially all of its and Newco's assets within the meaning of Section
368(a)(2)(E)(I) of the Code and the Treasury regulations promulgated thereunder
and will continue its historic business or use a significant portion of its
historic business assets in a business;

        (3) To the extent any expenses relating to the Merger (or the "plan of
reorganization" within the meaning of Treas. Reg. Section 1.368-1(c) with
respect to the Merger) are funded directly or indirectly by a party other than
the incurring party, such expenses will be 


<PAGE>   3
HNC Software, Inc.
December 8, 1998
Page 3

reorganization expenses within the guidelines established in Revenue Ruling
73-54, 1973-1 C.B. 187;

        (4) No OSI stockholder has guaranteed or will guarantee any OSI
indebtedness outstanding during the period immediately prior to the Merger, and
at all relevant times prior to and including the Effective Date, (i) no
outstanding indebtedness of OSI, HNC, or Newco has or will represent equity for
tax purposes; (ii) no outstanding equity of OSI, HNC, or Newco has represented
or will represent indebtedness for tax purposes; (iii) no outstanding security,
instrument, agreement or arrangement that provides for, contains, or represents
either a right to acquire OSI capital stock (or to share in the appreciation
thereof) constitutes or will constitute "stock" for purposes of Section 368(c)
of the Code; and

        (5) None of OSI, HNC, or Newco is, or will be at the time of the Merger,
an investment company as defined in Section 368(a)(2)(F) of the Code.

        In addition, in connection with rendering this opinion, we have assumed
(without any independent investigation thereof) that:

        (1) Original documents (including signature) are authentic, documents
submitted to us as copies conform to the original documents, and there has been
(or will be by the Effective Time of the Merger) due execution and delivery of
all documents where due execution and delivery are prerequisites to the
effectiveness thereof;

        (2) Any representation or statement referred to above made "to the best
of knowledge" or otherwise similarly qualified is correct without such
qualification, and all statements and representations, whether or not qualified
are true and will remain true through the Effective Date and thereafter where
relevant;

        (3) The Merger will be consummated pursuant to the Agreement and will be
effective under the laws of the state of Delaware; and

        (4) An opinion of counsel, substantially identical in substance to this
opinion, has been delivered to OSI from Hale and Dorr LLP, and will not be
withdrawn prior to the Effective Date.

        Based on the foregoing documents, materials, assumptions and
information, and subject to the qualifications and assumptions set forth herein,
we are of the opinion that, if the Merger is consummated in accordance with the
provisions of the Agreement (and without any waiver, breach or amendment of any
of the provisions thereof), the Merger will be a "reorganization" for federal
income tax purposes within the meaning of Section 368(a) of the Code and HNC,
Newco, and OSI each will be a "party to the reorganization" within the meaning
of Section 368(b) of the Code;

        Our opinion set forth above is based on the existing provisions of the
Code, Treasury Regulations (including Temporary Treasury Regulations)
promulgated under the Code, published Revenue Rulings, Revenue Procedures and
other announcements of the Internal 


<PAGE>   4
HNC Software, Inc.
December 8, 1998
Page 4

Revenue Service (the "SERVICE") and existing court decisions, any of which could
be changed at any time. Any such changes might be retroactive with respect to
transactions entered into prior to the date of such changes and could
significantly modify the opinion set forth above. Nevertheless, we undertake no
responsibility to advise you of any subsequent developments in the application,
operation or interpretation of the U.S. federal income tax laws.

               Our opinion concerning certain of the U.S. federal tax
consequences of the Merger is limited to the specific U.S. federal tax
consequences presented above. No opinion is expressed as to any transaction
other than the Merger, including any transaction undertaken in connection with
the Merger. In addition, this opinion does not address any estate, gift, state,
local or foreign tax consequences that may result from the Merger. In
particular, we express no opinion regarding: (i) the amount, existence, or
availability after the Merger, of any of the U.S. federal income tax attributes
of OSI, HNC or Newco; (ii) any transaction in which OSI Common Stock is acquired
or HNC Common Stock is disposed other than pursuant to the Merger; (iii) the
potential application of the "disqualifying disposition" rules of Section 421 of
the Code to dispositions of OSI Common Stock; (iv) the effects of the Merger and
HNC's assumption of outstanding options to acquire OSI stock on the holders of
such options under any OSI employee stock option or stock purchase plan,
respectively; (v) the effects of the Merger on any OSI stock acquired by the
holder subject to the provision of Section 83(a) of the Code; (vi) the effects
of the Merger on any payment which is or may be subject to the provisions of
Section 280G of the Code; and (vii) the application of the collapsible
corporation provisions of Section 341 of the Code to OSI, HNC or Newco as a
result of the Merger.

               No ruling has been or will be requested from the Service
concerning the U.S. federal income tax consequences of the Merger. In reviewing
this opinion, you should be aware that the opinion set forth above represents
our conclusions regarding the application of existing U.S. federal income tax
law to the instant transaction. If the facts vary from those relied upon
(including if any representations, covenant, warranty or assumption upon which
we have relied is inaccurate, incomplete, breached or ineffective), our opinions
contained herein could be inapplicable. You should be aware that an opinion of
counsel represents only counsel's best legal judgment, and has no binding effect
or official status of any kind, and that no assurance can be given that contrary
positions may not be taken by the Service or that a court considering the issues
would not hold otherwise.

               In addition, although we have not been asked to render (and
therefore are not rendering) any opinion other than that stated above, we have
been requested to review the tax discussion in the section of the S-4
Registration Statement entitled "Certain Federal Income Tax Consequences of the
merger." We believe that such discussion fairly presents the current federal
income tax law applicable to the Merger, and the material tax consequences to
OSI and OSI's shareholders as a result of the Merger provided that the Merger
qualifies as a reorganization under Section 368 of the Code.

               This Exhibit Opinion is being delivered solely for the purpose of
being included as an exhibit to the S-4 Registration Statement; it may not be
relied upon or utilized for any other purpose (including, without limitation,
satisfying any conditions in the Agreement) or by any 



<PAGE>   5
HNC Software, Inc.
December 8, 1998
Page 5


other person or entity,
and may not be made available to any other person or entity, without our prior
written consent. We do, however, consent to the use of this opinion as an
exhibit to the S-4 Registration Statement and to the use of our name in the S-4
Registration Statement wherever it appears.

                                            Very truly yours,



                                            /s/ FENWICK & WEST LLP
                                            ------------------------------------
                                            FENWICK & WEST LLP
                                            A LIMITED LIABILITY PARTNERSHIP 
                                            INCLUDING PROFESSIONAL CORPORATIONS

EXHIBITS:

        EXHIBIT A -- An Officers' Tax Certificate of HNC Software Inc., and Oahu
        Transaction Corp., dated December 8, 1998, and signed by authorized
        officers of HNC Software Inc.
        and Oahu Transaction Corp.

        EXHIBIT B -- An Officer's Tax Certificate of Open Solutions Inc., dated
        December 8, 1998, and signed by an authorized officer of Open Solutions
        Inc.
<PAGE>   6

                           CERTIFICATE OF OFFICERS OF
                              HNC SOFTWARE INC. AND
                             OAHU TRANSACTION CORP.

                                December 8, 1998



Fenwick & West LLP                                Hale and Dorr LLP
Two Palo Alto Square                              60 State Street
Palo Alto, CA  94306                              Boston, MA  02109


           The undersigned officers of HNC Software Inc., a Delaware corporation
("HNC") and Oahu Transaction Corp., a Delaware corporation that is a
wholly-owned subsidiary of HNC ("NEWCO"), on behalf of HNC and Newco,
respectively, after consulting with legal counsel and financial auditors
regarding the meaning of and the factual support for the following
representations, hereby represent, in connection with the proposed merger of
Newco with and into Open Solutions Inc., a Delaware corporation ("OSI"), with
OSI surviving the merger (the "MERGER"), all pursuant to that certain Agreement
and Plan of Reorganization by and among HNC, Newco and OSI, dated as of
September 16, 1998, and exhibits thereto (collectively, the "AGREEMENT")(1),
that the following facts are now true, and will continue to be true as of the
Closing Date and Effective Time for the Merger, and thereafter as relevant:

        1. Newco is a newly-formed corporation that was created for the sole
purpose of facilitating HNC's acquisition of OSI. It has not conducted and is
not conducting any business activities and has no significant assets.

        2. Following the transaction, OSI will hold at least 90 percent of the
fair market value of its net assets, at least 70 percent of the fair market
value of its gross assets, at least 90 percent of the fair market value of
Newco's net assets, and at least 70 percent of the fair market value of Newco's
gross assets, as held immediately prior to the transaction. For purposes of this
representation, amounts paid by OSI or Newco to dissenters, amounts paid by OSI
or Newco to shareholders who receive cash or other property, including cash paid
to OSI shareholders in lieu of fractional shares of HNC stock, amounts used by
OSI or Newco to pay reorganization expenses, all redemptions and distributions
(except for regular, normal dividends) made by Newco, and OSI or Newco assets
disposed of at less than fair market value by OSI or Newco prior to or
subsequent to the Merger and in contemplation thereof (including without
limitation any asset disposed of by OSI or Newco, other than in the ordinary
course of business, during the period ending on the Effective Time and beginning
with the commencement of negotiations (whether formal or informal) between OSI
and HNC regarding the Merger (the "PRE-MERGER PERIOD")), will be included as
assets of OSI or Newco, respectively, immediately prior to the transaction;
provided, however, that any property received in exchange for assets disposed of
at less than fair market value will not be included as assets of OSI or Newco
immediately prior to the transaction.

- --------

(1) Unless otherwise indicated, all capitalized terms shall have the meaning
    defined in the Agreement.


<PAGE>   7

        3. Prior to the Merger, HNC will be in Control of Newco. As used herein,
"CONTROL" shall mean ownership of stock possessing at least eighty percent (80%)
of the total combined voting power of all classes of stock entitled to vote and
at least eighty percent (80%) of the total number of shares of each other class
of stock of the corporation. For purposes of determining Control, a person shall
not be considered to own voting stock if rights to vote such stock (or to
restrict or otherwise control the voting of such stock) are held by a third
party (including a voting trust) other than an agent of such person.

        4. HNC will acquire Control of OSI in the Merger solely in exchange for
HNC voting common stock. For purposes of this representation, shares of OSI
stock exchanged in the Merger solely for cash or other property (including
without limitation, cash paid to OSI shareholders perfecting dissenters' rights
or in lieu of fractional shares of HNC stock) will be treated as OSI stock
outstanding at the Effective Time but not exchanged for voting stock of HNC.

        5. HNC has no plan or intention to cause OSI to issue, after the Merger,
additional shares of stock (or rights to acquire shares of OSI stock) that would
result in HNC losing Control of OSI.

        6. To the best knowledge and belief of HNC, there is no plan or
intention (a "PLAN") on the part of the OSI shareholders to engage in any Sales
(as defined below) of HNC stock that, in the aggregate, would reduce the OSI
shareholders' ownership of HNC stock to a number of shares having a value as of
the Effective Time of less than 50 percent (50%) of the aggregate fair market
value, immediately prior to the Merger, of all of the outstanding shares of OSI
stock. For this purpose, the principles and definitions set forth in
subparagraph (a)-(c) below shall be applicable.

               (a) "Sales" shall be limited to any sale, exchange, transfer,
pledge, disposition or any other transaction that results in a direct or
indirect transfer of the risk of ownership to HNC, any person related to HNC,
OSI, or any person related to OSI.

               (b) The determination of whether a person is related to HNC
and/or OSI shall be made in accordance with Treas. Reg. Section 1.368-1(e)(3).

               (c) Shares of OSI stock with respect to which Sales occur or have
occurred during the pre-Merger Period shall be considered shares of OSI stock
that are outstanding immediately prior to the Merger, are exchanged for HNC
stock in the Merger and are then disposed of in Sales pursuant to a Plan.

        7. Except for transfers described in Section 368(a)(2)(C) of the 1986
Internal Revenue Code, as amended (the "CODE") or Treas. Reg. Section
1.368-2(k)(2), HNC has no plan or intention to: (i) cause OSI to sell, transfer
or otherwise dispose of any of its assets or of any of the assets acquired from
Newco except for dispositions made in the ordinary course of business or for the
payment of expenses incurred by OSI in the Merger; (ii) liquidate OSI; (iii)
merge OSI with or into another corporation including HNC or its affiliates; (iv)
sell, distribute or otherwise dispose of the stock of OSI; or (v) to cause OSI
to sell, distribute, or otherwise dispose of the stock of OSI.

                                      -2-
<PAGE>   8

        8. In the Merger, Newco will have no liabilities assumed by OSI and will
not transfer to OSI any assets subject to liabilities. At the Effective Time,
Newco's liabilities will not exceed the tax basis of its assets.

        9. HNC intends that, following the Merger, OSI will continue its
historic business or HNC will use a significant portion of OSI's historic
business assets in a business. For this purpose, HNC shall be treated as
continuing the business and holding the assets of related entities, as described
in Treas. Reg. Section 1.368-1(d)(4).

        10. Neither HNC nor any HNC subsidiary owns, or has owned during the
past five (5) years, directly or indirectly, any shares of OSI stock, or the
right to acquire or vote any such stock.

        11. No shareholder of OSI is acting as agent for HNC in connection with
the Merger or approval thereof, and HNC will not reimburse any OSI shareholder
for OSI stock such shareholder may have purchased or for other obligations such
shareholder may have incurred.

        12. The transfer of cash to OSI shareholders in lieu of fractional HNC
voting common stock shares, if any, is solely for the purpose of avoiding the
expense and inconvenience to HNC of accounting for fractional shares and does
not represent separately bargained-for consideration.

        13. Except with respect to payments of cash in lieu of fractional shares
of HNC voting common stock and cash paid for OSI dissenting shares, if any, one
hundred percent (100%) of the OSI stock outstanding immediately prior to the
Merger will be exchanged solely for HNC voting common stock. Thus, except as set
forth in the preceding sentence, Newco and HNC intend that no consideration
other than HNC voting common stock be paid or received (directly or indirectly,
actually or constructively) for OSI stock.

        14. The total fair market value of all consideration other than HNC
voting common stock received by OSI shareholders in exchange for their OSI stock
in the Merger (including, without limitation, cash paid to OSI shareholders in
lieu of fractional shares of HNC voting common stock and cash for OSI Dissenting
Shares) will be less than two percent (2%) of the aggregate fair market value of
OSI stock outstanding immediately prior to the Merger.

        15. No shares of Newco have been or will be used as consideration or
issued to shareholders of OSI in the Merger.

        16. HNC, Newco, OSI and the OSI shareholders will each pay its or their
own expenses in connection with the Merger as contemplated by the Agreement.

        17. There is no inter-corporate indebtedness existing between HNC and
OSI or between Newco and OSI that was issued, acquired, or will be settled at a
discount, and HNC will assume no liabilities of OSI or any OSI shareholder in
connection with the Merger.

        18. None of the payments to be received by any shareholder-employee of
OSI which are designated as compensation are actually separate consideration
for, or allocable to, any of their shares of OSI stock; and the compensation to
be paid to any shareholder of OSI will be for 

                                      -3-

<PAGE>   9

services actually rendered and will be commensurate with amounts paid to third
parties bargaining at arm's length for similar services.

        19. Neither HNC nor Newco are investments companies as defined in
Section 368(a)(2)(F) of the Code.

        20. Neither HNC nor Newco is under the jurisdiction of a court in a
Title 11 or similar case within the meaning of Section 368(a)(3)(A) of the Code.

        21. The Merger, which will result in a combination of the business of
OSI with the other businesses owned or operated by HNC and Newco, is being
undertaken for a valid non-tax business purpose.

        22. The fair market value of the HNC stock received by each OSI
shareholder will be approximately equal to the fair market value of the OSI
stock surrendered in exchange therefor, and the aggregate consideration received
by the OSI shareholders in exchange for their OSI stock will be approximately
equal to the fair market value of all the outstanding shares of OSI stock
immediately prior to the Merger.

        23. There are no other agreements, arrangements or understandings among
any of HNC, Newco, OSI and/or any of their subsidiaries, affiliates or
shareholders other than those described or referenced in the Agreement.

        24. HNC and Newco are authorized to make all of the representations set
forth herein, and the undersigned are authorized to execute this certificate on
behalf of HNC and Newco.

            The undersigned recognize that counsel to and auditors for OSI and 
counsel to and auditors for HNC and Newco will rely upon the foregoing
representations in evaluating the US federal income tax consequences of the
Merger. If, prior to the Effective Time, any of the representations set forth
herein cease to be accurate in any material respect, the undersigned agrees to
deliver immediately a written notice to that effect. The undersigned recognizes
that your opinions will not address any tax consequences of the Merger or any
action taken in connection therewith except as expressly set forth in such
opinions.


               HNC Software Inc., a Delaware corporation:

               By:  /s/ R.V. THOMAS
                    ----------------------------------------

               Date:  12/7/98
                    ----------------------------------------



               Oahu Transaction Corp., a Delaware corporation:

               By:  /s/ R.V. THOMAS
                    ----------------------------------------

               Date:  12/7/98
                    ----------------------------------------


                                      -4-


<PAGE>   10

                                [OSI LETTERHEAD]



                                December 8, 1998



Fenwick & West LLP                                Hale and Dorr LLP
Two Palo Alto Square                              60 State Street
Palo Alto, CA  94306                              Boston, MA  02109


               The undersigned officer of Open Solutions Inc., a Delaware
corporation ("OSI"), on behalf of the management of OSI, after consulting with
legal counsel and financial auditors regarding the meaning of and the factual
support for the following representations, hereby represents, in connection with
the proposed merger of Oahu Transaction Corp., a Delaware corporation ("NEWCO")
and a wholly-owned subsidiary of HNC Software Inc., a Delaware corporation
("HNC"), with and into OSI, with OSI surviving the merger (the "MERGER"), all
pursuant to that certain Agreement and Plan of Reorganization by and among HNC,
Newco and OSI, dated as of September 16, 1998, and exhibits thereto
(collectively, the "AGREEMENT")(1), that the following facts are now true, and
will continue to be true as of the Closing Date and Effective Time for the
Merger, and thereafter as relevant:

        1. Following the transaction, OSI will hold at least 90 percent of the
fair market value of its net assets, at least 70 percent of the fair market
value of its gross assets, at least 90 percent of the fair market value of
Newco's net assets, and at least 70 percent of the fair market value of Newco's
gross assets, as held immediately prior to the transaction. For purposes of this
representation, amounts paid by OSI or Newco to dissenters, amounts paid by OSI
or Newco to shareholders who receive cash or other property, including cash paid
to OSI shareholders in lieu of fractional shares of HNC stock, amounts used by
OSI or Newco to pay reorganization expenses, all redemptions and distributions
(except for regular, normal dividends) made by Newco, and OSI or Newco assets
disposed of at less than fair market value by OSI or Newco prior to or
subsequent to the Merger and in contemplation thereof (including without
limitation any asset disposed of by OSI or Newco, other than in the ordinary
course of business, during the period ending on the Effective Time and beginning
with the commencement of negotiations (whether formal or informal) between OSI
and HNC regarding the Merger (the "PRE-MERGER PERIOD")), will be included as
assets of OSI or Newco, respectively, immediately prior to the transaction;
provided, however, that any property received in exchange for assets disposed of
at less than fair market value will not be included as assets of OSI or Newco
immediately prior to the transaction.

        2. OSI has made no transfer of any of its assets (including any
distribution of assets with respect to, or in redemption of, stock) in
contemplation of the Merger or during the Pre-

- --------
(1) Unless otherwise indicated, all capitalized terms shall have the meaning 
    defined in the Agreement

<PAGE>   11

Merger Period other than (i) in the ordinary course of business, and (ii)
payments for expenses incurred in connection with the Merger.

        3. In the Merger, shares of OSI stock representing Control of OSI will
be exchanged solely for voting common stock of HNC; at the time of the Merger,
there will exist no rights of any kind (including without limitation warrants,
options, convertible securities, contingent rights, informal or unwritten
rights) to acquire OSI stock or to vote (or restrict or otherwise control the
vote of) OSI stock which, if exercised, could affect HNC's acquisition and
retention of Control of OSI. For purposes of this representation, shares of OSI
stock exchanged in the Merger for cash and other property will be treated as OSI
stock outstanding on the date of the Merger but not exchanged for voting common
stock of HNC. As used herein, the term "CONTROL" shall mean ownership of stock
possessing at least eighty percent (80%) of the total combined voting power of
all classes of stock entitled to vote and at least eighty percent (80%) of the
total number of shares of each other class of stock of the corporation. For
purposes of determining Control, a person shall not be considered to own voting
stock if rights to vote such stock (or to restrict or otherwise control the
voting of such stock) are held by a third party (including a voting trust) other
than an agent of such person.

        4. To the best of OSI's knowledge and belief, during the past five
years, and at present, none of the outstanding shares of OSI stock, including
the right to acquire or vote any such shares have, directly or indirectly, been
owned by HNC or HNC's affiliates.

        5. To the best of OSI's knowledge and belief, no OSI shareholder is
acting as agent for HNC in connection with the Merger or approval thereof, and
HNC will not reimburse any OSI shareholder for OSI stock such shareholder may
have purchased or for other obligations such shareholder may have incurred.

        6. To the best of OSI's knowledge and belief, no shares of Newco stock
have been or will be used as consideration or issued to OSI shareholders
pursuant to the Merger.

        7. At the Effective Time of the Merger, there will be no accrued but
unpaid dividends on shares of OSI stock.

        8. At the Effective Time of the Merger, the fair market value of OSI's
assets will exceed the sum of its liabilities, plus the amount of liabilities,
if any, to which the assets are subject.

        9. To the best of OSI's knowledge and belief, in the Merger, Newco will
have no liabilities assumed by OSI and will not transfer to OSI any assets
subject to liabilities. OSI has no knowledge or belief that, at the Effective
Time, Newco's liabilities will exceed the tax basis of its assets.

        10. The total fair market value of all consideration other than HNC
voting common stock received by OSI shareholders in exchange for their OSI stock
in the Merger (including, without limitation, cash paid to OSI shareholders in
lieu of fractional shares of HNC voting common stock) will be less than two
percent (2%) of the aggregate fair market value of OSI stock outstanding
immediately prior to the Merger.


                                        2

<PAGE>   12

        11. OSI has no obligation, understanding, agreement or intention to
issue additional shares of stock after the Merger that would result in HNC
losing Control of OSI.

        12. Other than shares of OSI stock or options to acquire OSI stock
issued as compensation to present or former service providers (including,
without limitation, employees or directors) of OSI in the ordinary course of
business, if any, no issuances of OSI stock or rights to acquire OSI have
occurred or will occur during the pre-Merger Period other than pursuant to
options, warrants, or agreements outstanding prior to the Pre-Merger Period.

        13. To the best of OSI's knowledge and belief, following the Merger, HNC
will continue OSI's historic business or use a significant portion of OSI's
historic business assets in a business. For this purpose, HNC shall be treated
as continuing the business and holding the assets of related entities, as
described in Treas. Reg. Section 1.368-1(d)(4).

        14. OSI has no plan or intention, and is under no obligation, to
discontinue its business, to sell or otherwise dispose of any of its assets or
of any of the assets acquired from Newco in the Merger except for dispositions
made in the ordinary course of business, the payment of expenses incurred by OSI
pursuant to the Merger, or transfers of assets to a corporation controlled by
OSI, as described in Section 368(a)(2)(c) of the 1986 Internal Revenue Code, as
amended (the "CODE"), and Treas. Reg. Section 1.368-2(k).

        15. There is no plan or intention (a "PLAN") on the part of the OSI
shareholders who own one percent (1%) or more of the OSI stock, and to the best
of the knowledge and belief of OSI after due inquiry of its officers and
directors, there is no Plan on the part of the remaining OSI shareholders, to
engage in any Sales (as defined below) of HNC stock that, in the aggregate,
would reduce the OSI shareholders' ownership of HNC stock to a number of shares
having a value as of the Effective Time of less than 50 percent (50%) of the
aggregate fair market value, immediately prior to the Merger, of all of the
outstanding shares of OSI stock. For this purpose, the principles and
definitions set forth in subparagraph (a)-(c) below shall be applicable.

               (a) "Sales" shall be limited to any sale, exchange, transfer,
pledge, disposition or any other transaction that results in a direct or
indirect transfer of the risk of ownership to HNC, any person related to HNC,
OSI, or any person related to OSI.

               (b) The determination of whether a person is related to HNC
and/or OSI shall be made in accordance with Treas. Reg. Section 1.368-1(e)(3).

               (c) Shares of OSI stock with respect to which Sales occur or have
occurred during the pre-Merger Period shall be considered shares of OSI stock
that are outstanding immediately prior to the Merger, are exchanged for HNC
stock in the Merger and are then disposed of in Sales pursuant to a Plan.

        16. OSI has no knowledge of any plan or intention of HNC to reacquire
any of its stock issued pursuant to the Merger.


                                       3

<PAGE>   13

        17. The transfer of cash to OSI shareholders in lieu of fractional HNC
voting common stock shares, if any, is solely for the purpose of avoiding the
expense and inconvenience to HNC of accounting for fractional shares and does
not represent separately bargained-for consideration.

        18. Except with respect to payments of cash to OSI shareholders in lieu
of fractional shares of HNC voting common stock and cash paid for OSI Dissenting
Shares, if any, or as otherwise provided in the Agreement, one hundred percent
(100%) of the OSI stock outstanding immediately prior to the Merger will be
exchanged solely for HNC voting common stock. Thus, except as set forth in the
preceding sentence, OSI intends that no consideration other than HNC voting
common stock be paid or received (directly or indirectly, actually or
constructively) for OSI stock.

        19. HNC, Newco, OSI and the shareholders of OSI will each pay separately
its or their own expenses in connection with the Merger as contemplated by the
Agreement.

        20. There is no intercorporate indebtedness existing between HNC and OSI
or between Newco and OSI that was issued, acquired, or will be settled at a
discount, and to the best knowledge of the management of OSI, HNC will assume no
liabilities of OSI or any OSI shareholder in connection with the Merger.

        21. None of the payments received by any shareholder-employee of OSI
which have been designated as compensation are actually separate consideration
for, or allocable to, any of their shares of OSI stock; and the compensation
paid to any shareholder of OSI will be for services actually rendered and will
be commensurate with amounts paid to third parties bargaining at arm's length
for similar services.

        22. To the best of OSI's knowledge and belief, at the Effective Time of
the Merger, the fair market value of the HNC stock and other consideration
received by each OSI shareholder will be approximately equal to the fair market
value of the OSI stock surrendered in exchange therefor, and the aggregate
consideration received by the OSI shareholders in exchange for their OSI stock
will be approximately equal to the fair market value of all the outstanding
shares of OSI stock immediately prior to the Merger.

        23. OSI is not an investment company as defined in Section 368(a)(2)(F)
of the Code, and is not under the jurisdiction of a court in a Title 11 or
similar case within the meaning of Section 368(a)(3)(A) of the Code.

        24. OSI has not made an election under Section 341 of the Code.

        25. There are no other agreements, arrangements or understandings among
any of HNC, Newco, OSI and/or any of their subsidiaries, affiliates or
shareholders other than those described or referenced in the Agreement.

        26. OSI's principal reasons for participating in the Merger are bona
fide business reasons.


                                       4

<PAGE>   14

        27. OSI is authorized to make all of the representations set forth
herein, and the undersigned is authorized to execute this certificate on behalf
of OSI.

               The undersigned recognize that counsel to and auditors for OSI
and counsel to and auditors for HNC and Newco will rely upon the foregoing
representations in evaluating the federal income tax consequences of the Merger.
If, prior to the Effective Time, any of the representations set forth herein
cease to be accurate in any material respect, the undersigned agrees to deliver
immediately a written notice to that effect. The undersigned recognizes that
your opinions will not address any tax consequences of the Merger or any action
taken in connection therewith except as expressly set forth in such opinions.


               Open Solutions Inc., a Delaware corporation:

               By:    /s/ Richard Willemin
                  ------------------------------------------
               Name:  Richard Willemin
                    ----------------------------------------
               Title: Senior VP & Chief Financial Officer
                     ---------------------------------------
               Date:  12/8/98
                    ----------------------------------------


                                       5

<PAGE>   1



                                                                     EXHIBIT 8.2
                         [HALE AND DORR LLP LETTERHEAD]



                                                December 8, 1998


Open Solutions Inc.
300 Winding Brook Drive
Glastonbury, CT  06033

        Re:     Merger pursuant to Agreement and Plan of Merger among HNC
                Software Inc., Oahu Transaction Corp., and Open Solutions, Inc.

Ladies and Gentlemen:

        This opinion is being delivered to you in connection with the filing of
a registration statement (the "Registration Statement") of Form S-4, which
includes the Joint Proxy Statement and Prospectus relating to the Agreement and
Plan of Merger dated as of September 16, 1998 (the "Merger Agreement"), by and
among HNC Software Inc., a Delaware corporation ("HNC"), Oahu Transaction Corp.,
a Delaware corporation and wholly owned subsidiary of HNC ("Merger Sub"), and
Open Solutions Inc., a Delaware corporation ("OSI"). Pursuant to the Merger
Agreement, Merger Sub will merge with and into OSI (the "Merger"). Except as
otherwise provided, capitalized terms not defined herein have the meanings set
forth in the Merger Agreement and the exhibits thereto or in the letters
delivered to Hale and Dorr LLP by HNC, OSI, and certain OSI shareholders
containing certain representations of HNC, OSI, and certain OSI shareholders
relevant to this opinion (the "Representation Letters"). All section references,
unless otherwise indicated, are to the United States Internal Revenue Code of
1986, as amended (the "Code").

        In our capacity as counsel to OSI in the Merger, and for purposes of
rendering this opinion, we have examined and relied upon the Registration
Statement, the Merger Agreement and the exhibits thereto, the Representation
Letters, the Affiliate Agreement, the Escrow Agreement, and such other documents
as we considered relevant to our analysis. In our examination of documents, we
have assumed the authenticity of original documents, the accuracy of copies, the
genuineness of signatures, and the legal capacity of signatories.

        We have assumed that all parties to the Merger Agreement and to any
other documents examined by us have acted, and will act, in accordance with the
terms of such Merger Agreement and documents and that the Merger will be
consummated at the Effective Time pursuant to the terms and conditions set forth
in the Merger Agreement without the waiver or modification of any such terms and
conditions. Furthermore, we have assumed that all representations contained in
the Merger Agreement, as well as those representations contained in the
Representation Letters, are, and at the Effective Time will be, true and
complete in all material respects, and that 


<PAGE>   2
Open Solutions, Inc.
December 8, 1998
Page 2




any representation made in any of the documents referred to herein "to the best
of the knowledge and belief" (or similar knowledge or belief qualification) of
any person or party will be correct without such qualification. We have also
assumed that as to all matters for which a person or entity has represented that
such person or entity is not a party to, does not have, or is not aware of, any
plan, intention, understanding, or agreement, there is no such plan, intention,
understanding, or agreement. We have not attempted to verify independently such
representations, but in the course of our representation, nothing has come to
our attention that would cause us to question the accuracy thereof.

        The conclusions expressed herein represent our judgment as to the proper
treatment of certain aspects of the Merger under the income tax laws of the
United States based upon the Code, Treasury Regulations, case law, and rulings
and other pronouncements of the Internal Revenue Service (the "IRS") as in
effect on the date of this opinion. No assurances can be given that such laws
will not be amended or otherwise changed prior to the Effective Time, or at any
other time, or that such changes will not affect the conclusions expressed
herein. Nevertheless, we undertake no responsibility to advise you of any
developments after the Effective Time in the application or interpretation of
the income tax laws of the United States.

        Our opinion represents our best judgment of how a court would decide if
presented with the issues addressed herein and is not binding upon either the
IRS or any court. Thus, no assurances can be given that a position taken in
reliance on our opinion will not be challenged by the IRS or rejected by a
court.

        This opinion addresses only the specific United States federal income
tax consequences of the Merger set forth below, and does not address any other
federal, state, local, or foreign income, estate, gift, transfer, sales, use, or
other tax consequences that may result from the Merger or any other transaction
(including any transaction undertaken in connection with the Merger). We express
no opinion regarding the tax consequences of the Merger to shareholders of OSI
that are subject to special tax rules, and we express no opinion regarding the
tax consequences of the Merger arising in connection with the ownership of
options or warrants for OSI stock.

        On the basis of, and subject to, the foregoing, and in reliance upon the
representations and assumptions described above, we are of the following
opinion:

        1.      The Merger will constitute a reorganization within the meaning
                of Section 368(a);

        2.      No gain or loss will be recognized by HNC, Merger Sub, or OSI as
                a result of the Merger;

        3.      No gain or loss will be recognized by the shareholders of OSI
                upon the exchange of OSI stock solely for shares of HNC stock in
                the Merger;

        4.      Cash received by the shareholders of OSI in lieu of fractional
                shares of HNC stock will be treated as received as a 
                distribution in redemption of such fractional shares, subject
                to the provisions of Section 302, as if such fractional shares
                had been issued in the Merger and then redeemed by HNC;

        5.      The tax basis of the shares of HNC stock received by the
                shareholders of OSI in the Merger will be equal to the tax basis
                of the shares of OSI stock exchanged therefor in the Merger,
                reduced by any basis allocable to a fractional share of HNC
                stock treated as sold or exchanged under Section 302; and


<PAGE>   3
Open Solutions, Inc.
December 8, 1998
Page 3


        6.      The holding period for the shares of HNC stock received by the
                shareholders of OSI will include the holding period for the
                shares of OSI stock exchanged therefor in the Merger, provided
                that the shares of OSI stock are held as capital assets at the
                Effective Time.

        In rendering this opinion, we have assumed that Fenwick & West LLP has
delivered, and has not withdrawn, an opinion that is substantially similar to
this one. No opinion is expressed as to any federal income tax consequence of
the Merger except as specifically set forth herein, and this opinion may not be
relied upon except with respect to the consequences specifically discussed
herein.

        This opinion is being delivered to you solely for the purpose of
inclusion as an exhibit to the Registration Statement. It may not be relied upon
for any other purpose or by any other person or entity, and may not be made
available to any other person or entity without our prior written consent. We
hereby consent to the filing of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name in the Registration
Statement in connection with references to this opinion and the tax consequences
of the Merger. In giving this consent, however, we do not hereby admit that we
are in the category of persons whose consent is required under Section 7 of the
Securities Act of 1933, as amended.

                                                   Very truly yours,


                                                   /s/  HALE AND DORR LLP
                                                   ----------------------
                                                   HALE AND DORR LLP


<PAGE>   1
                                                                   EXHIBIT 10.02

                                HNC SOFTWARE INC.

                           1995 EQUITY INCENTIVE PLAN

                             As Adopted May 4, 1995 
                          As Amended January 11, 1996
     (effective as of July 27, 1995), December 6, 1996, November 25, 1997,
                       May 21, 1998 and November 20, 1998

        1. PURPOSE. The purpose of this Plan is to provide incentives to
attract, retain and motivate eligible persons whose present and potential
contributions are important to the success of the Company, its Parent,
Subsidiaries and Affiliates, by offering them an opportunity to participate in
the Company's future performance through awards of Options, Restricted Stock and
Stock Bonuses. Capitalized terms not defined in the text are defined in Section
23.

        2. SHARES SUBJECT TO THE PLAN.

                2.1 Number of Shares Available. Subject to Sections 2.2 and 18,
the total number of Shares reserved and available for grant and issuance
pursuant to this Plan will be 5,250,000(1) Shares plus any Shares that are made
available for grant and issuance under this Plan pursuant to the following
sentence. Any Shares remaining unissued under the 1987 Stock Option Plan adopted
by HNC Software Inc., a California corporation that is the Company's predecessor
(the "PRIOR PLAN") on the Effective Date (as defined below) and any Shares
issuable upon exercise of options granted pursuant to the Prior Plan that expire
or become unexercisable for any reason without having been exercised in full,
will no longer be available for grant and issuance under the Prior Plan, but
will also be available for grant and issuance under this Plan. Subject to
Sections 2.2 and 18, Shares that: (a) are subject to issuance upon exercise of
an Option but cease to be subject to such Option for any reason other than
exercise of such Option; (b) are subject to an Award granted hereunder but are
forfeited or are repurchased by the Company at the original issue price; or (c)
are subject to an Award that otherwise terminates without Shares being issued;
will again be available for grant and issuance in connection with future Awards
under this Plan. At all times the Company shall reserve and keep available a
sufficient number of Shares as shall be required to satisfy the requirements of
all outstanding Options granted under this Plan and all other outstanding but
unvested Awards granted under this Plan.

                2.2 Adjustment of Shares. In the event that the number of
outstanding Shares is changed by a stock dividend, recapitalization, stock
split, reverse stock split, subdivision, combination, reclassification or
similar change in the capital structure of the Company without consideration,
then (a) the number of Shares reserved for issuance under this Plan, (b) the
Exercise Prices of and number of Shares subject to outstanding Options, and (c)
the number of Shares subject to other outstanding Awards will be proportionately
adjusted, subject to any required action by the Board or the stockholders of the
Company and compliance with applicable securities laws; provided, however, that
fractions of a Share will not be issued but will either be replaced by a cash
payment equal to the Fair Market Value of such fraction of a Share or will be
rounded up to the nearest whole Share, as determined by the Committee.

        3. ELIGIBILITY. ISOs (as defined in Section 5 below) may be granted only
to employees (including officers and directors who are also employees) of the
Company or of a Parent or Subsidiary of the Company. All other Awards may be
granted to employees, officers, directors, consultants, independent contractors
and advisors of the Company or any Parent, Subsidiary or Affiliate of the
Company; provided such consultants, contractors and advisors render bona fide
services not in connection with the offer and sale of securities in a capital-

- --------
(1) Adjusted to reflect (i) the 2-for-1 split of the Company's capital stock
    effected in April 1996; (ii) the authorization of 1,500,000 additional
    shares of Common Stock for issuance under the Plan approved by the Company's
    stockholders on December 6, 1996; (iii) the authorization of 750,000
    additional shares of Common Stock for issuance under the Plan approved by
    the Company's stockholders on November 25, 1997; (iv) the authorization of
    1,000,000 additional shares of Common Stock for issuance under the Plan
    approved by the Company's stockholders on May 21, 1998; and (v) the
    authorization of 700,000 additional shares of Common Stock for issuance
    under the Plan approved by the Company's stockholders on November 20, 1998.
<PAGE>   2
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan

raising transaction. No person will be eligible to receive more than 500,000(2)
Shares in any calendar year under this Plan pursuant to the grant of Awards
hereunder, other than new employees of the Company or of a Parent, Subsidiary or
Affiliate of the Company (including new employees who are also officers and
directors of the Company or any Parent, Subsidiary or Affiliate of the Company)
who are eligible to receive up to a maximum of 700,000(3) Shares in the calendar
year in which they commence their employment. A person may be granted more than
one Award under this Plan.

        4. ADMINISTRATION.

                4.1 Committee Authority. This Plan will be administered by the
Committee or by the Board acting as the Committee. Subject to the general
purposes, terms and conditions of this Plan, and to the direction of the Board,
the Committee will have full power to implement and carry out this Plan. Without
limitation, the Committee will have the authority to:

        (a)     construe and interpret this Plan, any Award Agreement and any
                other agreement or document executed pursuant to this Plan;

        (b)     prescribe, amend and rescind rules and regulations relating to
                this Plan;

        (c)     select persons to receive Awards;

        (d)     determine the form and terms of Awards;

        (e)     determine the number of Shares or other consideration subject to
                Awards;

        (f)     determine whether Awards will be granted singly, in combination
                with, in tandem with, in replacement of, or as alternatives to,
                other Awards under this Plan or any other incentive or
                compensation plan of the Company or any Parent, Subsidiary or
                Affiliate of the Company;

        (g)     grant waivers of Plan or Award conditions;

        (h)     determine the vesting, exercisability and payment of Awards;

        (i)     correct any defect, supply any omission or reconcile any
                inconsistency in this Plan, any Award or any Award Agreement;

        (j)     determine whether an Award has been earned; and

        (k)     make all other determinations necessary or advisable for the
                administration of this Plan.

                4.2 Committee Discretion. Any determination made by the
Committee with respect to any Award will be made in its sole discretion at the
time of grant of the Award or, unless in contravention of any express term of
this Plan or Award, at any later time, and such determination will be final and
binding on the Company and on all persons having an interest in any Award under
this Plan. The Committee may delegate to one or more officers of the Company the
authority to grant an Award under this Plan to Participants who are not Insiders
of the Company.

                4.3 Exchange Act Requirements. If two or more members of the
Board are Outside Directors, the Committee will be comprised of at least two (2)
members of the Board, all of whom are Outside Directors and Disinterested
Persons. During all times that the Company is subject to Section 16 of the
Exchange

- --------
(2) Adjusted to reflect the 2-for-1 split of the Company's capital stock
    effected in April 1996.

(3) Adjusted to reflect the 2-for-1 split of the Company's capital stock
    effected in April 1996.

                                      -2-
<PAGE>   3
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan

Act, the Company will take appropriate steps to comply with the disinterested
administration requirements of Section 16(b) of the Exchange Act, which will
consist of the appointment by the Board of a Committee consisting of not less
than two (2) members of the Board, each of whom is a Disinterested Person.

        5. OPTIONS. The Committee may grant Options to eligible persons and will
determine whether such Options will be Incentive Stock Options within the
meaning of the Code ("ISOs") or Nonqualified Stock Options ("NQSOs"), the number
of Shares subject to the Option, the Exercise Price of the Option, the period
during which the Option may be exercised, and all other terms and conditions of
the Option, subject to the following:

                5.1 Form of Option Grant. Each Option granted under this Plan
will be evidenced by an Award Agreement which will expressly identify the Option
as an ISO or an NQSO ("STOCK OPTION AGREEMENT"), and will be in such form and
contain such provisions (which need not be the same for each Participant) as the
Committee may from time to time approve, and which will comply with and be
subject to the terms and conditions of this Plan.

                5.2 Date of Grant. The date of grant of an Option will be the
date on which the Committee makes the determination to grant such Option, unless
otherwise specified by the Committee. The Stock Option Agreement and a copy of
this Plan will be delivered to the Participant within a reasonable time after
the granting of the Option.

                5.3 Exercise Period. Options will be exercisable within the
times or upon the events determined by the Committee as set forth in the Stock
Option Agreement governing such Option; provided, however, that no Option will
be exercisable after the expiration of ten (10) years from the date the Option
is granted; and provided further that no ISO granted to a person who directly or
by attribution owns more than ten percent (10%) of the total combined voting
power of all classes of stock of the Company or of any Parent or Subsidiary of
the Company ("TEN PERCENT STOCKHOLDER") will be exercisable after the expiration
of five (5) years from the date the ISO is granted. The Committee also may
provide for the exercise of Options to become exercisable at one time or from
time to time, periodically or otherwise, in such number of Shares or percentage
of Shares as the Committee determines.

                5.4 Exercise Price. The Exercise Price of an Option will be
determined by the Committee when the Option is granted and may be not less than
100% of the Fair Market Value of the Shares on the date of grant; provided that:
the Exercise Price of any ISO granted to a Ten Percent Shareholder will not be
less than 110% of the Fair Market Value of the Shares on the date of grant.
Payment for the Shares purchased may be made in accordance with Section 8 of
this Plan.

                5.5 Method of Exercise. Options may be exercised only by
delivery to the Company of a written stock option exercise agreement (the
"EXERCISE AGREEMENT") in a form approved by the Committee (which need not be the
same for each Participant), stating the number of Shares being purchased, the
restrictions imposed on the Shares purchased under such Exercise Agreement, if
any, and such representations and agreements regarding Participant's investment
intent and access to information and other matters, if any, as may be required
or desirable by the Company to comply with applicable securities laws, together
with payment in full of the Exercise Price for the number of Shares being
purchased.

                5.6 Termination. Notwithstanding the exercise periods set forth
in the Stock Option Agreement, exercise of an Option will always be subject to
the following:

        (a)     If the Participant is Terminated for any reason except death or
                Disability, then the Participant may exercise such Participant's
                Options only to the extent that such Options would have been
                exercisable upon the Termination Date no later than three (3)
                months after the Termination Date (or such shorter or longer
                time period not exceeding five (5) years as may be determined by
                the Committee, with any exercise beyond three (3) months

                                      -3-


<PAGE>   4
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan


                after the Termination Date deemed to be an NQSO), but in any
                event, no later than the expiration date of the Options.

        (b)     If the Participant is Terminated because of Participant's death
                or Disability (or the Participant dies within three (3) months
                after a Termination other than because of Participant's death or
                disability), then Participant's Options may be exercised only to
                the extent that such Options would have been exercisable by
                Participant on the Termination Date and must be exercised by
                Participant (or Participant's legal representative or authorized
                assignee) no later than twelve (12) months after the Termination
                Date (or such shorter or longer time period not exceeding five
                (5) years as may be determined by the Committee, with any such
                exercise beyond (a) three (3) months after the Termination Date
                when the Termination is for any reason other than the
                Participant's death or Disability, or (b) twelve (12) months
                after the Termination Date when the Termination is for
                Participant's death or Disability, deemed to be an NQSO), but in
                any event no later than the expiration date of the Options.

                5.7 Limitations on Exercise. The Committee may specify a
reasonable minimum number of Shares that may be purchased on any exercise of an
Option, provided that such minimum number will not prevent Participant from
exercising the Option for the full number of Shares for which it is then
exercisable.

                5.8 Limitations on ISOs. The aggregate Fair Market Value
(determined as of the date of grant) of Shares with respect to which ISOs are
exercisable for the first time by a Participant during any calendar year (under
this Plan or under any other incentive stock option plan of the Company or any
Affiliate, Parent or Subsidiary of the Company) will not exceed $100,000. If the
Fair Market Value of Shares on the date of grant with respect to which ISOs are
exercisable for the first time by a Participant during any calendar year exceeds
$100,000, then the Options for the first $100,000 worth of Shares to become
exercisable in such calendar year will be ISOs and the Options for the amount in
excess of $100,000 that become exercisable in that calendar year will be NQSOs.
In the event that the Code or the regulations promulgated thereunder are amended
after the Effective Date of this Plan to provide for a different limit on the
Fair Market Value of Shares permitted to be subject to ISOs, such different
limit will be automatically incorporated herein and will apply to any Options
granted after the effective date of such amendment.

                5.9 Modification, Extension or Renewal. The Committee may
modify, extend or renew outstanding Options and authorize the grant of new
Options in substitution therefor, provided that any such action may not, without
the written consent of a Participant, impair any of such Participant's rights
under any Option previously granted. Any outstanding ISO that is modified,
extended, renewed or otherwise altered will be treated in accordance with
Section 424(h) of the Code. The Committee may reduce the Exercise Price of
outstanding Options without the consent of Participants affected by a written
notice to them; provided, however, that the Exercise Price may not be reduced
below the minimum Exercise Price that would be permitted under Section 5.4 of
this Plan for Options granted on the date the action is taken to reduce the
Exercise Price.

                5.10 No Disqualification. Notwithstanding any other provision in
this Plan, no term of this Plan relating to ISOs will be interpreted, amended or
altered, nor will any discretion or authority granted under this Plan be
exercised, so as to disqualify this Plan under Section 422 of the Code or,
without the consent of the Participant affected, to disqualify any ISO under
Section 422 of the Code.

        6. RESTRICTED STOCK. A Restricted Stock Award is an offer by the Company
to sell to an eligible person Shares that are subject to restrictions. The
Committee will determine to whom an offer will be made, the number of Shares the
person may purchase, the price to be paid (the "PURCHASE PRICE"), the
restrictions to which the Shares will be subject, and all other terms and
conditions of the Restricted Stock Award, subject to the following:

                6.1 Form of Restricted Stock Award. All purchases under a
Restricted Stock Award made pursuant to this Plan will be evidenced by an Award
Agreement ("RESTRICTED STOCK PURCHASE AGREEMENT")


                                      -4-

<PAGE>   5
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan



that will be in such form (which need not be the same for each Participant) as
the Committee will from time to time approve, and will comply with and be
subject to the terms and conditions of this Plan. The offer of Restricted Stock
will be accepted by the Participant's execution and delivery of the Restricted
Stock Purchase Agreement and full payment for the Shares to the Company within
thirty (30) days from the date the Restricted Stock Purchase Agreement is
delivered to the person. If such person does not execute and deliver the
Restricted Stock Purchase Agreement along with full payment for the Shares to
the Company within thirty (30) days, then the offer will terminate, unless
otherwise determined by the Committee.

                6.2 Purchase Price. The Purchase Price of Shares sold pursuant
to a Restricted Stock Award will be determined by the Committee and will be at
least 100% of the Fair Market Value of the Shares on the date the Restricted
Stock Award is granted. Payment of the Purchase Price may be made in accordance
with Section 8 of this Plan.

                6.3 Restrictions. Restricted Stock Awards will be subject to
such restrictions (if any) as the Committee may impose. The Committee may
provide for the lapse of such restrictions in installments and may accelerate or
waive such restrictions, in whole or part, based on length of service,
performance or such other factors or criteria as the Committee may determine.

        7. STOCK BONUSES.

                7.1 Awards of Stock Bonuses. A Stock Bonus is an award of Shares
(which may consist of Restricted Stock) for services rendered to the Company or
any Parent, Subsidiary or Affiliate of the Company. A Stock Bonus may be awarded
for past services already rendered to the Company, or any Parent, Subsidiary or
Affiliate of the Company (provided that the Participant pays the Company the par
value of the Shares awarded by such Stock Bonus in cash) pursuant to an Award
Agreement (the "STOCK BONUS AGREEMENT") that will be in such form (which need
not be the same for each Participant) as the Committee will from time to time
approve, and will comply with and be subject to the terms and conditions of this
Plan. A Stock Bonus may be awarded upon satisfaction of such performance goals
as are set out in advance in the Participant's individual Award Agreement (the
"PERFORMANCE STOCK BONUS AGREEMENT") that will be in such form (which need not
be the same for each Participant) as the Committee will from time to time
approve, and will comply with and be subject to the terms and conditions of this
Plan. Stock Bonuses may vary from Participant to Participant and between groups
of Participants, and may be based upon the achievement of the Company, Parent,
Subsidiary or Affiliate and/or individual performance factors or upon such other
criteria as the Committee may determine.

                7.2 Terms of Stock Bonuses. The Committee will determine the
number of Shares to be awarded to the Participant and whether such Shares will
be Restricted Stock. If the Stock Bonus is being earned upon the satisfaction of
performance goals pursuant to a Performance Stock Bonus Agreement, then the
Committee will determine: (a) the nature, length and starting date of any period
during which performance is to be measured (the "PERFORMANCE PERIOD") for each
Stock Bonus; (b) the performance goals and criteria to be used to measure the
performance, if any; (c) the number of Shares that may be awarded to the
Participant; and (d) the extent to which such Stock Bonuses have been earned.
Performance Periods may overlap and Participants may participate simultaneously
with respect to Stock Bonuses that are subject to different Performance Periods
and different performance goals and other criteria. The number of Shares may be
fixed or may vary in accordance with such performance goals and criteria as may
be determined by the Committee. The Committee may adjust the performance goals
applicable to the Stock Bonuses to take into account changes in law and
accounting or tax rules and to make such adjustments as the Committee deems
necessary or appropriate to reflect the impact of extraordinary or unusual
items, events or circumstances to avoid windfalls or hardships.

                7.3 Form of Payment. The earned portion of a Stock Bonus may be
paid currently or on a deferred basis with such interest or dividend equivalent,
if any, as the Committee may determine. Payment may be made in the form of cash,
whole Shares, including Restricted Stock, or a combination thereof, either in a
lump sum payment or in installments, all as the Committee will determine.


                                      -5-
<PAGE>   6
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan




                7.4 Termination During Performance Period. If a Participant is
Terminated during a Performance Period for any reason, then such Participant
will be entitled to payment (whether in Shares, cash or otherwise) with respect
to the Stock Bonus only to the extent earned as of the date of Termination in
accordance with the Performance Stock Bonus Agreement, unless the Committee will
determine otherwise.

        8. PAYMENT FOR SHARE PURCHASES.

                8.1 Payment. Payment for Shares purchased pursuant to this Plan
may be made in cash (by check) or, where expressly approved for the Participant
by the Committee and where permitted by law:

        (a)     by cancellation of indebtedness of the Company to the
                Participant;

        (b)     by surrender of shares that either: (1) have been owned by
                Participant for more than six (6) months and have been paid for
                within the meaning of SEC Rule 144 (and, if such shares were
                purchased from the Company by use of a promissory note, such
                note has been fully paid with respect to such shares); or (2)
                were obtained by Participant in the public market;

        (c)     by tender of a full recourse promissory note having such terms
                as may be approved by the Committee and bearing interest at a
                rate sufficient to avoid imputation of income under Sections 483
                and 1274 of the Code; provided, however, that Participants who
                are not employees or directors of the Company will not be
                entitled to purchase Shares with a promissory note unless the
                note is adequately secured by collateral other than the Shares;
                provided, further, that the portion of the Purchase Price equal
                to the par value of the Shares, if any, must be paid in cash;

        (d)     by waiver of compensation due or accrued to the Participant for
                services rendered; provided, further, that the portion of the
                Purchase Price equal to the par value of the Shares, if any,
                must be paid in cash;

        (e)     with respect only to purchases upon exercise of an Option, and
                provided that a public market for the Company's stock exists:

                (1)     through a "same day sale" commitment from the
                        Participant and a broker-dealer that is a member of the
                        National Association of Securities Dealers (an "NASD
                        DEALER") whereby the Participant irrevocably elects to
                        exercise the Option and to sell a portion of the Shares
                        so purchased to pay for the Exercise Price, and whereby
                        the NASD Dealer irrevocably commits upon receipt of such
                        Shares to forward the Exercise Price directly to the
                        Company; or

                (2)     through a "margin" commitment from the Participant and a
                        NASD Dealer whereby the Participant irrevocably elects
                        to exercise the Option and to pledge the Shares so
                        purchased to the NASD Dealer in a margin account as
                        security for a loan from the NASD Dealer in the amount
                        of the Exercise Price, and whereby the NASD Dealer
                        irrevocably commits upon receipt of such Shares to
                        forward the Exercise Price directly to the Company; or

        (f) by any combination of the foregoing.

                8.2 Loan Guarantees. The Committee may help the Participant pay
for Shares purchased under this Plan by authorizing a guarantee by the Company
of a third-party loan to the Participant.

        9. WITHHOLDING TAXES.


                                      -6-

<PAGE>   7
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan

                9.1 Withholding Generally. Whenever Shares are to be issued in
satisfaction of Awards granted under this Plan, the Company may require the
Participant to remit to the Company an amount sufficient to satisfy federal,
state and local withholding tax requirements prior to the delivery of any
certificate or certificates for such Shares. Whenever, under this Plan, payments
in satisfaction of Awards are to be made in cash, such payment will be net of an
amount sufficient to satisfy federal, state, and local withholding tax
requirements.

                9.2 Stock Withholding. When, under applicable tax laws, a
Participant incurs tax liability in connection with the exercise or vesting of
any Award that is subject to tax withholding and the Participant is obligated to
pay the Company the amount required to be withheld, the Committee may allow the
Participant to satisfy the minimum withholding tax obligation by electing to
have the Company withhold from the Shares to be issued that number of Shares
having a Fair Market Value equal to the minimum amount required to be withheld,
determined on the date that the amount of tax to be withheld is to be determined
(the "TAX DATE"). All elections by a Participant to have Shares withheld for
this purpose will be made in writing in a form acceptable to the Committee and
will be subject to the following restrictions:

        (a)     the election must be made on or prior to the applicable Tax
                Date;

        (b)     once made, then except as provided below, the election will be
                irrevocable as to the particular Shares as to which the election
                is made;

        (c)     all elections will be subject to the consent or disapproval of
                the Committee;

        (d)     if the Participant is an Insider and if the Company is subject
                to Section 16(b) of the Exchange Act: (1) the election may not
                be made within six (6) months of the date of grant of the Award,
                except as otherwise permitted by SEC Rule 16b-3(e) under the
                Exchange Act, and (2) either (A) the election to use stock
                withholding must be irrevocably made at least six (6) months
                prior to the Tax Date (although such election may be revoked at
                any time at least six (6) months prior to the Tax Date) or (B)
                the exercise of the Option or election to use stock withholding
                must be made in the ten (10) day period beginning on the third
                day following the release of the Company's quarterly or annual
                summary statement of sales or earnings; and

        (e)     in the event that the Tax Date is deferred until six (6) months
                after the delivery of Shares under Section 83(b) of the Code,
                the Participant will receive the full number of Shares with
                respect to which the exercise occurs, but such Participant will
                be unconditionally obligated to tender back to the Company the
                proper number of Shares on the Tax Date.

            10. PRIVILEGES OF STOCK OWNERSHIP.

                10.1 Voting and Dividends. No Participant will have any of the
rights of a stockholder with respect to any Shares until the Shares are issued
to the Participant. After Shares are issued to the Participant, the Participant
will be a stockholder and have all the rights of a stockholder with respect to
such Shares, including the right to vote and receive all dividends or other
distributions made or paid with respect to such Shares; provided, that if such
Shares are Restricted Stock, then any new, additional or different securities
the Participant may become entitled to receive with respect to such Shares by
virtue of a stock dividend, stock split or any other change in the corporate or
capital structure of the Company will be subject to the same restrictions as the
Restricted Stock; provided, further, that the Participant will have no right to
retain such stock dividends or stock distributions with respect to Shares that
are repurchased at the Participant's original Purchase Price pursuant to Section
12.

                10.2 Financial Statements. The Company will provide financial
statements to each Participant prior to such Participant's purchase of Shares
under this Plan, and to each Participant annually during the period such
Participant has Awards outstanding; provided, however, the Company will not be
required to provide such financial statements to Participants whose services in
connection with the Company assure them access to equivalent information.


                                      -7-

<PAGE>   8

                                                              HNC Software Inc.
                                                     1995 Equity Incentive Plan

             11. TRANSFERABILITY. Awards granted under this Plan, and any
interest therein, will not be transferable or assignable by Participant, and may
not be made subject to execution, attachment or similar process, otherwise than
by will or by the laws of descent and distribution or as consistent with the
specific Plan and Award Agreement provisions relating thereto. During the
lifetime of the Participant an Award will be exercisable only by the
Participant, and any elections with respect to an Award, may be made only by the
Participant.

             12. RESTRICTIONS ON SHARES. At the discretion of the Committee, the
Company may reserve to itself and/or its assignee(s) in the Award Agreement (a)
a right of first refusal to purchase all Shares that a Participant (or a
subsequent transferee) may propose to transfer to a third party, and/or (b) a
right to repurchase a portion of or all Shares held by a Participant following
such Participant's Termination at any time within ninety (90) days after the
later of Participant's Termination Date and the date Participant purchases
Shares under this Plan, for cash and/or cancellation of purchase money
indebtedness, at: (A) with respect to Shares that are "Vested" (as defined in
the Award Agreement), the higher of: (l) Participant's original Purchase Price,
or (2) the Fair Market Value of such Shares on Participant's Termination Date,
provided, that such right of repurchase (i) must be exercised as to all such
"Vested" Shares unless a Participant consents to the Company's repurchase of
only a portion of such "Vested" Shares and (ii) terminates when the Company's
securities become publicly traded; or (B) with respect to Shares that are not
"Vested" (as defined in the Award Agreement), at the Participant's original
Purchase Price, provided, that the right to repurchase at the original Purchase
Price lapses at the rate of at least 20% per year over five (5) years from the
date the Shares were purchased (or from the date of grant of options in the case
of Shares obtained pursuant to a Stock Option Agreement and Stock Option
Exercise Agreement), and if the right to repurchase is assignable, the assignee
must pay the Company, upon assignment of the right to repurchase, cash equal to
the excess of the Fair Market Value of the Shares over the original Purchase
Price.

             13. CERTIFICATES. All certificates for Shares or other securities
delivered under this Plan will be subject to such stock transfer orders, legends
and other restrictions as the Committee may deem necessary or advisable,
including restrictions under any applicable federal, state or foreign securities
law, or any rules, regulations and other requirements of the SEC or any stock
exchange or automated quotation system upon which the Shares may be listed or
quoted.

             14. ESCROW; PLEDGE OF SHARES. To enforce any restrictions on a
Participant's Shares, the Committee may require the Participant to deposit all
certificates representing Shares, together with stock powers or other
instruments of transfer approved by the Committee, appropriately endorsed in
blank, with the Company or an agent designated by the Company to hold in escrow
until such restrictions have lapsed or terminated, and the Committee may cause a
legend or legends referencing such restrictions to be placed on the
certificates. Any Participant who is permitted to execute a promissory note as
partial or full consideration for the purchase of Shares under this Plan will be
required to pledge and deposit with the Company all or part of the Shares so
purchased as collateral to secure the payment of Participant's obligation to the
Company under the promissory note; provided, however, that the Committee may
require or accept other or additional forms of collateral to secure the payment
of such obligation and, in any event, the Company will have full recourse
against the Participant under the promissory note notwithstanding any pledge of
the Participant's Shares or other collateral. In connection with any pledge of
the Shares, Participant will be required to execute and deliver a written pledge
agreement in such form as the Committee will from time to time approve. The
Shares purchased with the promissory note may be released from the pledge on a
pro rata basis as the promissory note is paid.

             15. EXCHANGE AND BUYOUT OF AWARDS. The Committee may, at any time
or from time to time, authorize the Company, with the consent of the respective
Participants, to issue new Awards in exchange for the surrender and cancellation
of any or all outstanding Awards. The Committee may at any time buy from a
Participant an Award previously granted with payment in cash, Shares (including
Restricted Stock) or other consideration, based on such terms and conditions as
the Committee and the Participant may agree.

             16. SECURITIES LAW AND OTHER REGULATORY COMPLIANCE. An Award will
not be effective unless such Award is in compliance with all applicable federal
and state securities laws, rules and regulations of any governmental body, and
the requirements of any stock exchange or automated quotation system

                                      -8-
<PAGE>   9
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan


upon which the Shares may then be listed or quoted, as they are in effect on the
date of grant of the Award and also on the date of exercise or other issuance.
Notwithstanding any other provision in this Plan, the Company will have no
obligation to issue or deliver certificates for Shares under this Plan prior to:
(a) obtaining any approvals from governmental agencies that the Company
determines are necessary or advisable; and/or (b) completion of any registration
or other qualification of such Shares under any state or federal law or ruling
of any governmental body that the Company determines to be necessary or
advisable. The Company will be under no obligation to register the Shares with
the SEC or to effect compliance with the registration, qualification or listing
requirements of any state securities laws, stock exchange or automated quotation
system, and the Company will have no liability for any inability or failure to
do so.

            17. NO OBLIGATION TO EMPLOY. Nothing in this Plan or any Award
granted under this Plan will confer or be deemed to confer on any Participant
any right to continue in the employ of, or to continue any other relationship
with, the Company or any Parent, Subsidiary or Affiliate of the Company or limit
in any way the right of the Company or any Parent, Subsidiary or Affiliate of
the Company to terminate Participant's employment or other relationship at any
time, with or without cause.

            18. CORPORATE TRANSACTIONS.

                18.1 Assumption or Replacement of Awards by Successor. In the
event of (a) a dissolution or liquidation of the Company, (b) a merger or
consolidation in which the Company is not the surviving corporation (other than
a merger or consolidation with a wholly-owned subsidiary, a reincorporation of
the Company in a different jurisdiction, or other transaction in which there is
no substantial change in the stockholders of the Company or their relative stock
holdings and the Awards granted under this Plan are assumed, converted or
replaced by the successor corporation, which assumption will be binding on all
Participants), (c) a merger in which the Company is the surviving corporation
but after which the stockholders of the Company (other than any stockholder
which merges (or which owns or controls another corporation which merges) with
the Company in such merger) cease to own their shares or other equity interests
in the Company, (d) the sale of substantially all of the assets of the Company,
or (e) any other transaction which qualifies as a "corporate transaction" under
Section 424(a) of the Code wherein the stockholders of the Company give up all
of their equity interest in the Company (except for the acquisition, sale or
transfer of all or substantially all of the outstanding shares of the Company
from or by the stockholders of the Company), any or all outstanding Awards may
be assumed, converted or replaced by the successor corporation (if any), which
assumption, conversion or replacement will be binding on all Participants. In
the alternative, the successor corporation may substitute equivalent Awards or
provide substantially similar consideration to Participants as was provided to
stockholders (after taking into account the existing provisions of the Awards).
The successor corporation may also issue, in place of outstanding Shares of the
Company held by the Participant, substantially similar shares or other property
subject to repurchase restrictions no less favorable to the Participant. In the
event such successor corporation (if any) refuses to assume or substitute
Options, as provided above, pursuant to a transaction described in this
Subsection 18.1, such Options will expire on such transaction at such time and
on such conditions as the Board will determine.

                18.2 Other Treatment of Awards. Subject to any greater rights
granted to Participants under the foregoing provisions of this Section 18, in
the event of the occurrence of any transaction described in Section 18.1, any
outstanding Awards will be treated as provided in the applicable agreement or
plan of merger, consolidation, dissolution, liquidation, sale of assets or other
"corporate transaction."

                18.3 Assumption of Awards by the Company. The Company, from time
to time, also may substitute or assume outstanding awards granted by another
company, whether in connection with an acquisition of such other company or
otherwise, by either; (a) granting an Award under this Plan in substitution of
such other company's award; or (b) assuming such award as if it had been granted
under this Plan if the terms of such assumed award could be applied to an Award
granted under this Plan. Such substitution or assumption will be permissible if
the holder of the substituted or assumed award would have been eligible to be
granted an Award under this Plan if the other company had applied the rules of
this Plan to such grant. In the event the Company assumes an award granted by
another company, the terms and conditions of such award will remain unchanged
(except that the exercise price and the number and nature of Shares issuable
upon exercise of any such option will

                                      -9-
<PAGE>   10
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan




be adjusted appropriately pursuant to Section 424(a) of the Code). In the event
the Company elects to grant a new Option rather than assuming an existing
option, such new Option may be granted with a similarly adjusted Exercise Price.

            19. ADOPTION AND STOCKHOLDER APPROVAL. This Plan will become
effective on the date on which the registration statement filed by the Company
with the SEC under the Securities Act registering the initial public offering of
the Company's Common Stock is declared effective by the SEC (the "EFFECTIVE
DATE"); provided, however, that if the Effective Date does not occur on or
before December 31, 1995, this Plan will terminate as of December 31, 1995
having never become effective. This Plan shall be approved by the stockholders
of the Company (excluding Shares issued pursuant to this Plan), consistent with
applicable laws, within twelve (12) months before or after the date this Plan is
adopted by the Board. Upon the Effective Date, the Board may grant Awards
pursuant to this Plan; provided, however, that: (a) no Option may be exercised
prior to initial stockholder approval of this Plan; (b) no Option granted
pursuant to an increase in the number of Shares subject to this Plan approved by
the Board will be exercised prior to the time such increase has been approved by
the stockholders of the Company; and (c) in the event that stockholder approval
of such increase is not obtained within the time period provided herein, all
Awards granted hereunder will be canceled, any Shares issued pursuant to any
Award will be canceled, and any purchase of Shares hereunder will be rescinded.
So long as the Company is subject to Section 16(b) of the Exchange Act, the
Company will comply with the requirements of Rule 16b-3 (or its successor), as
amended, with respect to stockholder approval.

            20. TERM OF PLAN. Unless earlier terminated as provided herein, this
Plan will terminate ten (10) years from the date this Plan is adopted by the
Board or, if earlier, the date of stockholder approval.

            21. AMENDMENT OR TERMINATION OF PLAN. The Board may at any time
terminate or amend this Plan in any respect, including without limitation
amendment of any form of Award Agreement or instrument to be executed pursuant
to this Plan; provided, however, that the Board will not, without the approval
of the stockholders of the Company, amend this Plan in any manner that requires
such stockholder approval pursuant to the Code or the regulations promulgated
thereunder as such provisions apply to ISO plans or (if the Company is subject
to the Exchange Act or Section 16(b) of the Exchange Act) pursuant to the
Exchange Act or Rule 16b-3 (or its successor), as amended, thereunder,
respectively.

            22. NONEXCLUSIVITY OF THE PLAN. Neither the adoption of this Plan by
the Board, the submission of this Plan to the stockholders of the Company for
approval, nor any provision of this Plan will be construed as creating any
limitations on the power of the Board to adopt such additional compensation
arrangements as it may deem desirable, including, without limitation, the
granting of stock options and bonuses otherwise than under this Plan, and such
arrangements may be either generally applicable or applicable only in specific
cases.

            23. DEFINITIONS. As used in this Plan, the following terms will have
the following meanings:

                "AFFILIATE" means any corporation that directly, or indirectly
through one or more intermediaries, controls or is controlled by, or is under
common control with, another corporation, where "control" (including the terms
"controlled by" and "under common control with") means the possession, direct or
indirect, of the power to cause the direction of the management and policies of
the corporation, whether through the ownership of voting securities, by contract
or otherwise.

                "AWARD" means any award under this Plan, including any Option,
Restricted Stock or Stock Bonus.

                "AWARD AGREEMENT" means, with respect to each Award, the signed
written agreement between the Company and the Participant setting forth the
terms and conditions of the Award.

                "BOARD" means the Board of Directors of the Company.



                                      -10-
<PAGE>   11
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan

                "CODE" means the Internal Revenue Code of 1986, as amended.

                "COMMITTEE" means the committee appointed by the Board to
administer this Plan, or if no such committee is appointed, the Board.

                "COMPANY" means HNC Software Inc., a corporation organized under
the laws of the State of Delaware, or any successor corporation.

                "DISABILITY" means a disability, whether temporary or permanent,
partial or total, within the meaning of Section 22(e)(3) of the Code, as
determined by the Committee.

                "DISINTERESTED PERSON" means a director who has not, during the
period that person is a member of the Committee and for one year prior to
commencing service as a member of the Committee, been granted or awarded equity
securities pursuant to this Plan or any other plan of the Company or any Parent,
Subsidiary or Affiliate of the Company, except in accordance with the
requirements set forth in Rule 16b-3(c)(2)(i) (and any successor regulation
thereto) as promulgated by the SEC under Section 16(b) of the Exchange Act, as
such rule is amended from time to time and as interpreted by the SEC.

                "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended.

                "EXERCISE PRICE" means the price at which a holder of an Option
may purchase the Shares issuable upon exercise of the Option.

                "FAIR MARKET VALUE" means, as of any date, the value of a share
of the Company's Common Stock determined as follows:

        (a)     if such Common Stock is then quoted on the Nasdaq National
                Market, its closing price on the Nasdaq National Market on the
                date of determination (if such day is a trading day) as reported
                in The Wall Street Journal, and, if such date of determination
                is not a trading day, then on the last trading day prior to the
                date of determination;

        (b)     if such Common Stock is publicly traded and is then listed on a
                national securities exchange, its closing price on the last
                trading day prior to the date of determination on the principal
                national securities exchange on which the Common Stock is listed
                or admitted to trading as reported in The Wall Street Journal;

        (c)     if such Common Stock is publicly traded but is not quoted on the
                Nasdaq National Market nor listed or admitted to trading on a
                national securities exchange, the average of the closing bid and
                asked prices on the last trading day prior to the date of
                determination as reported in The Wall Street Journal; or

        (d)     if none of the foregoing is applicable, by the Committee in good
                faith.

                "INSIDER" means an officer or director of the Company or any
other person whose transactions in the Company's Common Stock are subject to
Section 16 of the Exchange Act.

                "OUTSIDE DIRECTOR" means any director who is not; (a) a current
employee of the Company or any Parent, Subsidiary or Affiliate of the Company;
(b) a former employee of the Company or any Parent, Subsidiary or Affiliate of
the Company who is receiving compensation for prior services (other than
benefits under a tax-qualified pension plan); (c) a current or former officer of
the Company or any Parent, Subsidiary or Affiliate of the Company; or (d)
currently receiving compensation for personal services in any capacity, other
than as a director, from the Company or any Parent, Subsidiary or Affiliate of
the Company; provided, however, that at such time as the term "Outside
Director", as used in Section 162(m) of the Code is defined in regulations
promulgated

                                      -11-
<PAGE>   12
                                                               HNC Software Inc.
                                                      1995 Equity Incentive Plan


under Section 162(m) of the Code, "Outside Director" will have the meaning set
forth in such regulations, as amended from time to time and as interpreted by
the Internal Revenue Service.

                "OPTION" means an award of an option to purchase Shares pursuant
to Section 5.

                "PARENT" means any corporation (other than the Company) in an
unbroken chain of corporations ending with the Company, if at the time of the
granting of an Award under this Plan, each of such corporations other than the
Company owns stock possessing 50% or more of the total combined voting power of
all classes of stock in one of the other corporations in such chain.

                "PARTICIPANT" means a person who receives an Award under this
Plan.

                "PLAN" means this HNC Software Inc. 1995 Equity Incentive Plan,
as amended from time to time.

                "RESTRICTED STOCK AWARD" means an award of Shares pursuant to
Section 6.

                "SEC" means the Securities and Exchange Commission.

                "SECURITIES ACT" means the Securities Act of 1933, as amended.

                "SHARES" means shares of the Company's Common Stock reserved for
issuance under this Plan, as adjusted pursuant to Sections 2 and 18, and any
successor security.

                "STOCK BONUS" means an award of Shares, or cash in lieu of
Shares, pursuant to Section 7.

                "SUBSIDIARY" means any corporation (other than the Company) in
an unbroken chain of corporations beginning with the Company if, at the time of
granting of the Award, each of the corporations other than the last corporation
in the unbroken chain owns stock possessing 50% or more of the total combined
voting power of all classes of stock in one of the other corporations in such
chain.

                "TERMINATION" or "TERMINATED" means, for purposes of this Plan
with respect to a Participant, that the Participant has for any reason ceased to
provide services as an employee, director, consultant, independent contractor or
advisor to the Company or a Parent, Subsidiary or Affiliate of the Company,
except in the case of sick leave, military leave, or any other leave of absence
approved by the Committee, provided that such leave is for a period of not more
than ninety (90) days, or reinstatement upon the expiration of such leave is
guaranteed by contract or statute. The Committee will have sole discretion to
determine whether a Participant has ceased to provide services and the effective
date on which the Participant ceased to provide services (the "TERMINATION
DATE"). 


                                     - 12 -
<PAGE>   13
                                                                       NO.
                                HNC SOFTWARE INC.

                           1995 EQUITY INCENTIVE PLAN

                             STOCK OPTION AGREEMENT


               This Stock Option Agreement (this "AGREEMENT") is made and
entered into as of the date of grant set forth below (the "DATE OF GRANT") by
and between HNC Software Inc., a Delaware corporation (the "COMPANY"), and the
participant named below ("PARTICIPANT"). Capitalized terms not defined herein
shall have the meaning ascribed to them in the Company's 1995 Equity Incentive
Plan, as amended (the "PLAN").

PARTICIPANT:
                            ---------------------------------------------
SOCIAL SECURITY NUMBER:
                            ---------------------------------------------
PARTICIPANT'S ADDRESS:
                            ---------------------------------------------

                            ---------------------------------------------
TOTAL OPTION SHARES:
                            ---------------------------------------------
EXERCISE PRICE PER SHARE:
                            ---------------------------------------------
DATE OF GRANT:
                            ---------------------------------------------

                            ---------------------------------------------
VESTING START DATE:
                            ---------------------------------------------
EXPIRATION DATE:
                            ---------------------------------------------
TYPE OF STOCK OPTION
(CHECK ONE):               [X]   INCENTIVE STOCK OPTION
                           [ ]   NONQUALIFIED STOCK OPTION

        1. GRANT OF OPTION. The Company hereby grants to Participant an option
(this "OPTION") to purchase up to the total number of shares of Common Stock of
the Company set forth above (collectively, the "SHARES") at the Exercise Price
Per Share set forth above (the "EXERCISE PRICE"), subject to all of the terms
and conditions of this Agreement and the Plan. If designated as an Incentive
Stock Option above, this Option is intended to qualify as an "incentive stock
option" ("ISO") within the meaning of Section 422 of the Internal Revenue Code
of 1986, as amended (the "CODE").

        2. VESTING; EXERCISE PERIOD.

                2.1 Vesting of Right to Exercise Option. This Option shall
become exercisable as to portions of the Shares as follows: (a) this Option
shall not be exercisable with respect to any of the Shares until ______ (the
"FIRST VESTING DATE"); (b) if Participant has continuously provided services to
the Company or any Subsidiary, Parent or Affiliate of the Company from the Date
of Grant through the First Vesting Date and has not been Terminated on or before
the First Vesting Date, then on the First Vesting Date this Option shall become
exercisable as to twenty-five percent (25%) of the Shares; and (c) 


<PAGE>   14
                                                               HNC Software Inc.
                                                          Stock Option Agreement

thereafter, so long as Participant continuously provides services to the Company
or any Subsidiary, Parent or Affiliate of the Company and is not Terminated, on
the first anniversary of the First Vesting Date and on each successive
anniversary of the First Vesting Date thereafter, this Option shall become
exercisable as to an additional twenty-five percent (25%) of the Shares;
provided that this Option shall in no event ever become exercisable with respect
to more than 100% of the Shares.

                2.2 Expiration. This Option shall expire on the Expiration Date
set forth above and must be exercised, if at all, on or before the earlier of
the Expiration Date or the date on which this Option is earlier terminated in
accordance with the provisions of Section 3.

        3. TERMINATION.

                3.1 Termination for Any Reason Except Death or Disability. If
Participant is Terminated for any reason, except Participant's death or
Disability, then this Option, to the extent (and only to the extent) that it
would have been exercisable by Participant on the date of Termination, may be
exercised by Participant no later than three (3) months after the date of
Termination (or seven (7) months after the date of Termination if the Company is
then subject to Section 16 of the Exchange Act and Participant's transactions in
securities of the Company were subject to Section 16(b) of the Exchange Act on
the date of Termination), but in any event no later than the Expiration Date.

                3.2 Termination Because of Death or Disability. If Participant
is Terminated because of death or Disability of Participant, then this Option,
to the extent that it is exercisable by Participant on the date of Termination,
may be exercised by Participant (or Participant's legal representative) no later
than twelve (12) months after the date of Termination, but in any event no later
than the Expiration Date.

                3.3 No Obligation to Employ. Nothing in the Plan or this
Agreement shall confer on Participant any right to continue in the employ of, or
other relationship with, the Company or any Parent, Subsidiary or Affiliate of
the Company, or limit in any way the right of the Company or any Parent,
Subsidiary or Affiliate of the Company to terminate Participant's employment or
other relationship at any time, with or without cause.

        4. MANNER OF EXERCISE.

                4.1 Stock Option Exercise Agreement. To exercise this Option,
Participant (or in the case of exercise after Participant's death, Participant's
executor, administrator, heir or legatee, as the case may be) must deliver to
the Company an executed stock option exercise agreement in the form attached
hereto as Exhibit A, or in such other form as may be approved by the Company
from time to time (the "EXERCISE AGREEMENT"), which shall set forth, inter alia,
Participant's election to exercise this Option, the number of Shares being
purchased, any restrictions imposed on the Shares and any representations,
warranties and agreements regarding Participant's investment intent and access
to information as may be required by the Company to comply with applicable
securities laws. If someone other than 


                                      -2-


<PAGE>   15

                                                               HNC Software Inc.
                                                          Stock Option Agreement


Participant exercises this Option, then such person must submit documentation
reasonably acceptable to the Company that such person has the right to exercise
this Option.

                4.2 Limitations on Exercise. This Option may not be exercised
unless such exercise is in compliance with all applicable federal and state
securities laws, as they are in effect on the date of exercise. This Option may
not be exercised as to fewer than 100 Shares unless it is exercised as to all
Shares as to which this Option is then exercisable.

                4.3 Payment. The Exercise Agreement shall be accompanied by full
payment of the Exercise Price for the Shares being purchased in cash (by check),
or where permitted by law:

        (a)     by cancellation of indebtedness of the Company to the
                Participant;

        (b)     by surrender of shares of the Company's Common Stock that
                either: (1) have been owned by Participant for more than six (6)
                months and have been paid for within the meaning of SEC Rule 144
                (and, if such shares were purchased from the Company by use of a
                promissory note, such note has been fully paid with respect to
                such shares); or (2) were obtained by Participant in the open
                public market; and (3) are clear of all liens, claims,
                encumbrances or security interests;

        (c)     by tender of a full recourse promissory note having such terms
                as may be approved by the Committee and bearing interest at a
                rate sufficient to avoid imputation of income under Sections 483
                and 1274 of the Code; provided, however, that Participants who
                are not employees of the Company shall not be entitled to
                purchase Shares with a promissory note unless the note is
                adequately secured by collateral other than the Shares; and
                provided further that the portion of the Exercise Price equal to
                the par value of the Shares, if any, must be paid in cash;

        (d)     by waiver of compensation due or accrued to Participant for
                services rendered;

        (e)     provided that a public market for the Company's stock exists:
                (1) through a "same day sale" commitment from Participant and a
                broker-dealer that is a member of the National Association of
                Securities Dealers (an "NASD DEALER") whereby Participant
                irrevocably elects to exercise this Option and to sell a portion
                of the Shares so purchased to pay for the exercise price and
                whereby the NASD Dealer irrevocably commits upon receipt of such
                Shares to forward the exercise price directly to the Company; or
                (2) through a "margin" commitment -- from Participant and a NASD
                Dealer whereby Participant irrevocably elects to exercise this
                Option and to pledge the Shares so purchased to the NASD Dealer
                in a margin account as security for a loan from the NASD Dealer
                in the amount of the exercise price, and whereby the NASD Dealer
                irrevocably commits upon receipt of such Shares to forward the
                exercise price directly to the Company; or

        (f)     by any combination of the foregoing.


                                      -3-
<PAGE>   16


                                                               HNC Software Inc.
                                                          Stock Option Agreement

                4.4 Tax Withholding. Prior to the issuance of the Shares upon
exercise of this Option, Participant must pay or provide for any applicable
federal or state withholding obligations of the Company. If the Committee
permits, Participant may provide for payment of withholding taxes upon exercise
of this Option by requesting that the Company retain Shares with a Fair Market
Value equal to the minimum amount of taxes required to be withheld. In such
case, the Company shall issue the net number of Shares to the Participant by
deducting the Shares retained from the Shares issuable upon exercise.

                4.5 Issuance of Shares. Provided that the Exercise Agreement and
payment are in form and substance satisfactory to counsel for the Company, the
Company shall issue the Shares registered in the name of Participant,
Participant's authorized assignee, or Participant's legal representative, and
shall deliver certificates representing the Shares with the appropriate legends
affixed thereto.

        5. NOTICE OF DISQUALIFYING DISPOSITION OF ISO SHARES. If this Option is
an ISO, and if Participant sells or otherwise disposes of any of the Shares
acquired pursuant to the ISO on or before the later of (a) the date two (2)
years after the Date of Grant, and (b) the date one (1) year after transfer of
such Shares to Participant upon exercise of this Option, then Participant shall
immediately notify the Company in writing of such disposition. Participant
agrees that Participant may be subject to income tax withholding by the Company
on the compensation income recognized by Participant from the early disposition
by payment in cash or out of the current wages or other compensation payable to
Participant.

        6. COMPLIANCE WITH LAWS AND REGULATIONS. The exercise of this Option and
the issuance and transfer of Shares shall be subject to compliance by the
Company and Participant with all applicable requirements of federal and state
securities laws and with all applicable requirements of any stock exchange on
which the Company's Common Stock may be listed at the time of such issuance or
transfer. Participant understands that the Company is under no obligation to
register or qualify the Shares with the Securities and Exchange Commission, any
state securities commission or any stock exchange to effect such compliance.

        7. NONTRANSFERABILITY OF OPTION. This Option may not be transferred in
any manner other than by will or by the laws of descent and distribution and may
be exercised during the lifetime of Participant only by Participant. The terms
of this Option shall be binding upon the executors, administrators, successors
and assigns of Participant.

        8. TAX CONSEQUENCES. Set forth below is a brief summary as of the Date
of Grant of some of the federal and California tax consequences of exercise of
this Option and disposition of the Shares. THIS SUMMARY IS NECESSARILY
INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. PARTICIPANT
SHOULD CONSULT A TAX ADVISOR BEFORE EXERCISING THE OPTION OR DISPOSING OF THE
SHARES.



                                      -4-


<PAGE>   17

                                                               HNC Software Inc.
                                                          Stock Option Agreement

                8.1 Exercise of ISO. If this Option qualifies as an ISO, there
will be no regular federal or California income tax liability upon the exercise
of this Option, although the excess, if any, of the fair market value of the
Shares on the date of exercise over the Exercise Price will be treated as a tax
preference item for federal income tax purposes and may subject the Participant
to the alternative minimum tax in the year of exercise.

                8.2 Exercise of Nonqualified Stock Option. If this Option does
not qualify as an ISO, there may be a regular federal and California income tax
liability upon the exercise of this Option. Participant will be treated as
having received compensation income (taxable at ordinary income tax rates) equal
to the excess, if any, of the fair market value of the Shares on the date of
exercise over the Exercise Price. The Company will be required to withhold from
Participant's compensation or collect from Participant and pay to the applicable
taxing authorities an amount equal to a percentage of this compensation income
at the time of exercise.

                8.3 Disposition of Shares. If the Shares are held for more than
twelve (12) months after the date of the transfer of the Shares pursuant to the
exercise of this Option (and, in the case of an ISO, are disposed of more than
two (2) years after the Date of Grant), then any gain realized on disposition of
the Shares will be treated as long term capital gain for federal and California
income tax purposes. If Shares purchased under an ISO are disposed of within one
(1) year of exercise or within two (2) years after the Date of Grant, then any
gain realized on such disposition will be treated as compensation income
(taxable at ordinary income rates) to the extent of the excess, if any, of the
fair market value of the Shares on the date of exercise over the Exercise Price.
The Company will be required to withhold from Participant's compensation or
collect from Participant and pay to the applicable taxing authorities an amount
equal to a percentage of this compensation income at the time of exercise.

             9. PRIVILEGES OF STOCK OWNERSHIP. Participant shall not have any of
the rights of a shareholder with respect to any Shares until Participant
exercises this Option and pays the Exercise Price.

             10. INTERPRETATION. Any dispute regarding the interpretation of
this Agreement shall be submitted by Participant or the Company to the Committee
for review. The resolution of such a dispute by the Committee shall be final and
binding on the Company and Participant.

             11. ENTIRE AGREEMENT. The Plan is incorporated herein by reference.
This Agreement and the Plan and the Exercise Agreement constitute the entire
agreement and understanding of the parties hereto with respect to the subject
matter hereof and supersede all prior understandings and agreements with respect
to such subject matter.

             12. NOTICES. Any notice required to be given or delivered to the
Company under the terms of this Agreement shall be in writing and addressed to
the Corporate Secretary of the Company at its principal corporate offices. Any
notice required to be given or delivered to Participant shall be in writing and
addressed to Participant at the address indicated above or to such other address
as such party may designate in writing from time to time to the Company. All



                                      -5-


<PAGE>   18

                                                               HNC Software Inc.
                                                          Stock Option Agreement


notices shall be deemed to have been given or delivered upon: personal delivery;
three (3) days after deposit in the United States mail by certified or
registered mail (return receipt requested); one (1) business day after deposit
with any return receipt express courier (prepaid); or one (1) business day after
transmission by rapifax or telecopier.

        13. SUCCESSORS AND ASSIGNS. The Company may assign any of its rights
under this Agreement. This Agreement shall be binding upon and inure to the
benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer set forth herein, this Agreement shall be binding upon
Participant and Participant's heirs, executors, administrators, legal
representatives, successors and assigns.

        14. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the internal laws of the State of California, without regard to
that body of law pertaining to choice of law or conflict of law.

        15. ACCEPTANCE. Participant hereby acknowledges receipt of a copy of the
Plan and this Agreement. Participant has read and understands the terms and
provisions thereof, and accepts this Option subject to all the terms and
conditions of the Plan and this Agreement. Participant acknowledges that there
may be adverse tax consequences upon exercise of this Option or disposition of
the Shares and that the Company has advised Participant to consult a tax advisor
prior to such exercise or disposition.

        IN WITNESS WHEREOF, the Company has caused this Agreement to be executed
in duplicate by its duly authorized representative and Participant has executed
this Agreement in duplicate as of the Date of Grant.



HNC SOFTWARE INC.                              PARTICIPANT


By:
   -------------------------------             ---------------------------------
                                               (Signature)

Raymond V. Thomas 
- ----------------------------------             ---------------------------------
(Please print name)                            (Please print name)

Chief Financial Officer                     
- ----------------------------------
(Please print title)


                                      -6-

<PAGE>   19




   
                                    EXHIBIT A

                                HNC SOFTWARE INC.
                     1995 EQUITY INCENTIVE PLAN (THE "PLAN")
                         STOCK OPTION EXERCISE AGREEMENT

I hereby elect to purchase the number of shares of Common Stock of HNC SOFTWARE
INC. (the "Company") as set forth below:
<TABLE>

<S>                                            <C>   
Participant _____________________________      Number of Shares Purchased:________________________________
Social Security Number:__________________      Purchase Price per Share:__________________________________
Address:_________________________________      Aggregate Purchase Price:__________________________________
        _________________________________      Date of Option Agreement:__________________________________
Daytime Phone:___________________________      Exact Name of Title to Shares:_____________________________
Facsimile Number:________________________      ___________________________________________________________
Type of  Option: [ ] Incentive Stock Option    ___________________________________________________________
                 [ ] Nonqualified Stock Option
</TABLE>

1. DELIVERY OF PURCHASE PRICE. Participant hereby delivers to the Company the
Aggregate Purchase Price, to the extent permitted in the Option Agreement (the
"Option Agreement") as follows (check as applicable and complete):

[ ]     in cash (by  check) in the  amount of  $__________________,  receipt  of
        which is acknowledged by the Company;

[ ]     by cancellation  of  indebtedness  of the Company to Participant in the
        amount of $_______________________;

[ ]     by delivery of ___________ fully-paid, nonassessable and vested shares
        of the common stock of the Company owned by Participant for at least six
        (6) months prior to the date hereof (and which have been paid for within
        the meaning of SEC Rule 144), or obtained by Participant in the open
        public market, and owned free and clear of all liens, claims,
        encumbrances or security interests, valued at the current Fair Market
        Value of $_________ per share;

[ ]     by the waiver hereby of compensation due or accrued to Participant for
        services rendered in the amount of $______________________ (except that
        the par value of the Shares is tendered in cash (by check) receipt of
        which is acknowledged by the Company);

[ ]     through a "cashless exercise" commitment, delivered herewith, from
        Participant and the NASD Dealer ("Broker") named therein, in the amount
        of $___________________; or

[ ]     through a "margin" commitment, delivered herewith from Participant and
        the Broker named therein, in the amount of $_____________________.

        Please complete the following if you elect to exercise your option
        through a "cashless exercise" or "margin" commitment:

        Exercised shares shall be registered in the name of:
<TABLE>
<S>                                       <C>   

                                          Broker Phone:
                                                       -------------------------
        Name of Broker:                   Broker Fax:
                       ------------------             --------------------------
        Broker Account Number 
                              -----------
        Broker Account Number:
                              -----------
</TABLE>

        The Broker will remit the exercise price and applicable withholding
        taxes directly to the Company.

2. MARKET STANDOFF AGREEMENT. Participant, if requested by the Company and an
underwriter of Common Stock (or other securities) of the Company, agrees not to
sell or otherwise transfer or dispose of any Common Stock (or other securities)
of the Company held by Participant during the period requested by the managing
underwriter following the effective date of a registration statement of the
Company filed under the Securities Act, provided that all officers and directors
of the Company are required to enter into similar agreements. Such agreement
shall be in writing in a form satisfactory to the Company and such underwriter.
The Company may impose stop-transfer instructions with respect to the shares (or
other securities) subject to the foregoing restriction until the end of such
period.

<PAGE>   20
                                                              HNC Software Inc.,
                                                          Stock Option Agreement
      
3. TAX CONSEQUENCES. PARTICIPANT UNDERSTANDS THAT PARTICIPANT MAY SUFFER ADVERSE
TAX CONSEQUENCES AS A RESULT OF PARTICIPANT'S PURCHASE OR DISPOSITION OF THE
SHARES. PARTICIPANT REPRESENTS THAT PARTICIPANT HAS CONSULTED WITH ANY TAX
CONSULTANT(S) PARTICIPANT DEEMS ADVISABLE IN CONNECTION WITH THE PURCHASE OR
DISPOSITION OF THE SHARES AND THAT PARTICIPANT IS NOT RELYING ON THE COMPANY FOR
ANY TAX ADVICE.

4. ENTIRE AGREEMENT. The Plan and Option Agreement are incorporated herein by
reference. This Exercise Agreement, the Plan and the Option Agreement constitute
the entire agreement and understanding of the parties and supersede in their
entirety all prior understandings and agreements of the Company and Participant
with respect to the subject matter hereof, and are governed by California law
except for that body of law pertaining to choice of law or conflict of law.


Date:
     ------------------------------        -------------------------------------
                                           Signature of Participant

This is to verify our receipt and acceptance of the attached Exercise Agreement
and our agreement to promptly issue and deliver the shares referred to above,
subject to our receipt of the Aggregate Purchase Price, and taxes due, if any.
The shares, when so issued will be fully paid and nonassessable.

HNC Software Inc.


Date:
     ------------------------------        -------------------------------------
                                           Authorized Participant


                      [SIGNATURE PAGE TO HNC SOFTWARE INC.
           1995 EQUITY INCENTIVE PLAN STOCK OPTION EXERCISE AGREEMENT]








<PAGE>   1
                                                                   EXHIBIT 10.16


                       FIRST AMENDMENT TO LEASE AGREEMENT
        BETWEEN WILLIAMS PROPERTIES I, LLC & WILLIAMS PROPERTIES II, LLC,
               CALIFORNIA LIMITED LIABILITY COMPANIES ("LANDLORD")
            AND HNC SOFTWARE INC., A DELAWARE CORPORATION ("TENANT")
                               DATED JUNE 17, 1996
                            AMENDED OCTOBER 28, 1997


The undersigned parties do hereby amend that certain Lease Agreement between the
undersigned and dated on or about June 17, 1996 regarding the lease of
approximately 31,269 square fee located in that certain real property known by
the street address of 6020 Cornerstone Court West, San Diego, California and
generally described as the "Premises."

All of the terms and provisions of said Lease Agreement will remain in full
force and effect, except as follows:

1.       PREMISES:

         Paragraph 1.1 of said Lease Agreement is amended to read "Approximately
31,699 rentable square feet, consisting of approximately 13,986 rentable square
feet with a portion of the second floor and the entire third consisting of
approximately 17,713 rentable square feet of the Building (which term is defined
in Article 2 hereof) as depicted on Exhibit A attached hereto and incorporated
herein."

2.       TENANT'S PRO RATA SHARE:

         Paragraph 1.6 of said Lease Agreement is amended to read "73.23% which
percentage represents the proportion that the number of approximate rentable
square feet of the Premises bears to the total number of rentable square feet of
the Building (31,699 rentable square feet / 43,288 rentable square feet in the
Building)."

3.       BASIC RENT:

         Paragraph 1 of the Addendum to said Lease Agreement is amended to read

         "Tenant's Basic rent per month shall be adjusted pursuant to Section
         4.2 of the Lease as follows:

<TABLE>
         <S>                        <C>
         11/1/97 -- 10/31/98        $37,252.67 per month net of utilities
         11/1/98 -- 10/31/99        $38,742.78 per month net of utilities
         11/1/99 -- 10/31/00        $40,292.49 per month net of utilities
         11/1/00 -- 10/31/01        $41,904.19 per month net of utilities
         11/1/01 -- 10/31/02        $43,580.36 per month net of utilities
         11/1/02 -- 7/18/03         $45,323.57 per month net of utilities"
</TABLE>


                                      -1-
<PAGE>   2

LANDLORD:                                   TENANT:

WILLIAMS PROPERTIES I, LLC                  HNC SOFTWARE, INC.,
& WILLIAMS PROPERTIES II, LLC,              A DELAWARE CORPORATION
CALIFORNIA LIMITED LIABILITY COMPANIES


By:    /s/ Elizabaeth J. Clarquist          By:    /s/ Raymond V. Thomas
       ---------------------------------           -----------------------------
           Elizabeth J. Clarquist                      Raymond V. Thomas

Title: Vice President                       Title: Chief Financial Officer

Dated: 12/1/97                              Dated:   11/25/97
       ---------------------------------           -----------------------------


                                      -2-

<PAGE>   1
                                                                   EXHIBIT 10.17


                            SECOND AMENDMENT TO LEASE
                          (6020 CORNERSTONE COURT WEST)

        THIS SECOND AMENDMENT TO LEASE ("Amendment") is made and entered into as
of the 13 day of April , 1998, by and between W9/PC REAL ESTATE LIMITED
PARTNERSHIP, a Delaware limited partnership ("LANDLORD"), and HNC SOFTWARE,
INC., a Delaware corporation ("TENANT").

                                    RECITALS:

        A. Williams Properties I, LLC and Williams Properties II, LLC ("ORIGINAL
LANDLORD") and Tenant entered into that certain Lease Agreement dated as of June
17, 1996 (the "ORIGINAL LEASE") as amended by that certain First Amendment to
Lease dated as of October 28, 1997, by and between Original Landlord and Tenant
("FIRST AMENDMENT"), whereby Original Landlord leased to Tenant and Tenant
leased from Original Landlord certain office space located in that certain
building located and addressed at 6020 Cornerstone Court West in San Diego,
California (the "BUILDING"). The Original Lease, as amended by the First
Amendment, is referred to herein as the "LEASE." Landlord is the
successor-in-interest to Original Landlord.

        B. By this Amendment, Landlord and Tenant desire to expand the Existing
Premises (as defined below) and to otherwise modify the Lease as provided
herein.

        C. Unless otherwise defined herein, capitalized terms as used herein
shall have the same meanings as given thereto in the Lease.

                                   AGREEMENT:

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

        1. The Existing Premises. Landlord and Tenant hereby agree that pursuant
to the Lease, Landlord currently leases to Tenant and Tenant currently leases
from Landlord that certain office space in the Building containing 31,699
rentable square feet located on the second and third floors of the Building (the
"EXISTING PREMISES"), as more particularly described in the Lease.

        2. Expansion of the Existing Premises. That certain space located on the
first floor of the Building outlined on the floor plan attached hereto as
Exhibit "A" and made a part hereof, is referred to herein as the "EXPANSION
SPACE." Landlord and Tenant hereby stipulate that the Expansion Space contains
2,903 rentable square feet. Effective as of the Expansion Commencement Date (as
that term is defined in the Tenant Improvement Agreement attached hereto as
Exhibit "B" and incorporated herein by reference), Tenant shall lease from
Landlord and Landlord shall lease to Tenant the Expansion Space. Accordingly,
effective upon the


                                       1
<PAGE>   2

Expansion Commencement Date, the Existing Premises shall be increased to include
the Expansion Space. Landlord and Tenant hereby agree that such addition of the
Expansion Space to the Existing Premises shall, effective as of the Expansion
Commencement Date, increase the number of rentable square feet leased by Tenant
in the Building to a total of 34,602 rentable square feet. Effective as of the
Expansion Commencement Date, all references to the "Premises" shall mean and
refer to the Existing Premises as expanded by the Expansion Space.

        3. Term and Basic Rent for the Expansion Space. The Term for Tenant's
lease of the Expansion Space ("EXPANSION SPACE TERM") shall commence on the
Expansion Commencement Date and shall expire co-terminously with Tenant's lease
of the Existing Premises, which the parties agree is July 31, 2003. During the
Expansion Space Term, Tenant shall pay in accordance with the provisions of the
Lease, Basic Rent for the Expansion Space in an amount equal to $4,209.35 per
month (net of utilities, as Tenant separately pays for the utilities to the
Premises in accordance with Article 8 of the Lease), which amount shall be
increased on each anniversary of the commencement of the Expansion Space Term by
an amount equal to four percent (4%) of the then-applicable Basic Rent for the
Expansion Space.

        4. Tenant's Pro Rata Share. Notwithstanding anything to the contrary in
the Lease, during the Expansion Space Term, Tenant's Pro Rata Share of any
Excess Direct Operating Expenses for the Expansion Space only shall be 6.7% and
the Initial Direct Operating Expenses for the Expansion Space only shall be the
Direct Operating Expenses for calendar year 1998.

        5. Tenant Improvements. Improvements in the Expansion Space shall be
installed and constructed in accordance with the terms of the Tenant Improvement
Agreement attached hereto as Exhibit "B" and made a part hereof.

        6. Notice of Lease Term Dates. Landlord may deliver to Tenant a
commencement letter in a form substantially similar to that attached hereto as
Exhibit "C" and made a part hereof at any time after the Expansion Commencement
Date. Tenant agrees to execute and return to Landlord said commencement letter
within five (5) days after Tenant's receipt thereof.

        7. Brokers. Each party represents and warrants to the other that no
broker, agent or finder negotiated or was instrumental in negotiating or
consummating this Amendment, except for The Irving Hughes Group, Inc.
("BROKER"). Each party further agrees to defend, indemnify and hold harmless the
other party from and against any claim for commission or finder's fee by any
person or entity (other than Broker) who claims or alleges that they were
retained or engaged by the indemnifying party or at the request of such party in
connection with this Amendment.

        8. Defaults. Tenant hereby represents and warrants to Landlord that, as
of the date of this Amendment, Tenant is in full compliance with all terms,
covenants and conditions of the Lease and that there are no breaches or defaults
under the Lease by Landlord or Tenant, and that Tenant knows of no events or
circumstances which, given the passage of time, would constitute a default under
the Lease by either Landlord or Tenant.


                                       2
<PAGE>   3
        9. Signing Authority. Concurrently with Tenant's execution of this
Amendment, Tenant shall provide to Landlord a copy of a resolution of Tenant's
board of directors authorizing the execution of this Amendment, which resolution
shall be duly certified by the secretary or an assistant secretary of Tenant to
be a true copy of a resolution duly adopted by Tenant's board of directors and
shall be in the form of Exhibit "D" or in some other form reasonably acceptable
to Landlord. In the event Tenant fails to comply with the requirements set forth
in this Section 9, then each individual executing this Amendment shall be
personally liable for all of Tenant's obligations in the Lease.

        10. Waiver of Jury Trial. Each party hereby waives any right to trial by
jury in any action seeking specific performance of any provision of the Lease,
for damages for any breach under the Lease, or otherwise for enforcement of any
right or remedy under the Lease.

        11. No Further Modification. Except as set forth in this Amendment, all
of the terms and provisions of the Lease shall apply with respect to the
Expansion Space and shall remain unmodified and in full force and effect. All
references to the "Lease" shall refer to the Lease as amended by this Amendment.


                                       3
<PAGE>   4

IN WITNESS WHEREOF, this Amendment has been executed as of the day and year
first above written.

                                     "Landlord":

                                     W9/PC REAL ESTATE LIMITED
                                     PARTNERSHIP, a Delaware limited partnership


                                     By: W9/PC, INC., Delaware corporation,
                                         general partner

                                     By: /s/ Brad R. Baker
                                         ---------------------------------------
                                     Print Name: Brad R. Baker
                                                 -------------------------------
                                          Title: Senior Vice President
                                                 -------------------------------

                                     By:
                                         ---------------------------------------
                                     Print Name:
                                                 -------------------------------
                                          Title:
                                                 -------------------------------


                                     "Tenant":

                                     HNC SOFTWARE INC.,
                                     a Delaware corporation


                                     By:  /s/ Raymond V. Thomas
                                          --------------------------------------
                                     Print Name:  Raymond V. Thomas
                                                  ------------------------------
                                          Title:  Chief Financial Officer
                                                  ------------------------------

                                     By:  /s/ Hugh Gerfin
                                          --------------------------------------
                                     Print Name:  Hugh Gerfin
                                                  ------------------------------
                                     Title:       Controller
                                                  ------------------------------


                                       4
<PAGE>   5
                                   EXHIBIT "B"

                          TENANT IMPROVEMENT AGREEMENT

1. Tenant shall, at Tenant's sole cost and expense (but subject to partial
reimbursement by Landlord pursuant to Paragraph 5 below), construct improvements
to the Expansion Space (the "Tenant Improvements") in accordance with plans and
specifications approved in writing by Landlord. Within ten (10) days following
the full execution of the Lease, Tenant shall provide to Landlord preliminary
plans for the Tenant Improvements prepared by Jackson & Bryan ("Tenant's Space
Planner"). Within five (5) business days following Landlord's receipt of such
preliminary plans, Landlord shall notify Tenant of any required changes to the
preliminary plans as may be reasonably required by Landlord. Landlord's failure
to so notify Tenant of any such required changes to the preliminary plans within
said five (5) day period shall be deemed to constitute Landlord's disapproval
thereof. Tenant shall revise the preliminary plans in accordance with Landlord's
comments and deliver the same to Landlord within ten (10) days of Tenants
receipt of Landlord's comments. The foregoing procedure shall continue until
Landlord has approved of the preliminary plans. Within fourteen (14) days
following Landlord's approval of the preliminary plans, Tenant shall provide to
Landlord working drawings prepared by Tenant's Space Planner and other
appropriate consultants for the Tenant's Improvements based upon and conforming
with the preliminary plans. Within five (5) business days of Landlord's receipt
of such working drawings, Landlord shall notify Tenant of any changes to the
working drawings as may be reasonably required by Landlord. Landlord's failure
to so notify Tenant of any such required changes to the working drawings within
said five (5) day period shall be deemed to constitute Landlord's disapproval
thereof. Tenant shall revise the working drawings in accordance with Landlord's
comments and deliver the same to Landlord within ten (10) days of Tenant's
receipt of Landlord's comments. The foregoing procedure shall continue until
Landlord has approved the working drawings. Tenant shall, at its sole cost and
expense, be responsible for obtaining all permits and approvals from
governmental authorities necessary for the construction of the Tenant
Improvements and shall submit copies thereof to Landlord prior to commencement
of construction. Landlord's review and approval of the plans and specifications
for the Tenant Improvements shall create no liability or responsibility on the
part of Landlord for the completeness of such plans or their design sufficiency
or compliance with Laws.

2. Except for Landlord's reimbursement pursuant to Paragraph 5 below, Landlord
shall not be responsible for any costs associated with Tenant's construction of
the Tenant Improvements and Tenant acknowledges that Tenant is accepting the
Expansion Space in its "as-is" and "where-is" state, subject to Landlord's
obligations under the Lease.

3. No work of any kind shall be commenced and no building or other material
shall be delivered until (i) Landlord has approved the plans and specifications
for the Tenant Improvements, (ii) copies of all permits for the construction of
Tenant Improvements have been delivered to Landlord and (iii) at least five (5)
business days after written notice has been given by Tenant to Landlord of the
commencement of such work or the delivery of such materials.


                              EXHIBIT "B" - Page 1
<PAGE>   6

4. The improvements shall be constructed, and all work performed on the
Expansion Space, shall be in accordance with all laws. All work performed on the
Expansion Space shall be done in a good, workmanlike and lien free manner and
only with new materials of good quality and high standards. All work required in
the construction of the Tenant Improvements shall be performed only by competent
contractors duly licensed as such under the laws of the State of California.
Tenant shall enter into a construction contract approved by Landlord (which
approval shall not be unreasonably withheld or delayed) with the selected
contractor to construct the Tenant Improvements, which contract will name
Landlord as a third party beneficiary and permit an assignment to Landlord, at
Landlord's election, upon a default by Tenant under the Lease. Landlord approves
of Prevost Construction as the contractor.

5. Landlord agrees to contribute the sum ("CONSTRUCTION ALLOWANCE") of up to
Twenty-One Thousand Seven Hundred Seventy-Two and 50/00 Dollars ($21,772.50)
toward the cost of the Tenant Improvements and payment of Landlord's agent's
construction management fee of 5% of the hard construction costs for the Tenant
Improvements. Landlord shall only be obligated to make disbursements from the
Construction Allowance to the extent costs are incurred by Tenant for the design
and construction of Tenant Improvements. If the cost of the Tenant Improvements
does not exceed the Construction Allowance, Landlord shall retain the
difference. Provided Tenant is not in material under the Lease (and no
circumstance exists that would, with notice or lapse of time, or both,
constitute a default under the Lease), Landlord shall disburse the Construction
Allowance, or the applicable portion thereof, only when Landlord has received
the following:

(a)   Tenant has delivered to Landlord a draw request ("DRAW REQUEST")
      specifying that the Tenant Improvements have been completed, together with
      invoices, receipts and bills evidencing the costs and expenses set forth
      in such Draw Request and unconditional lien releases from the contractor
      and all relevant subcontractors and materialmen;

(b)   Landlord or Landlord's construction representative has inspected the
      Tenant Improvements and determined that the Tenant Improvements have been
      completed in a good and workmanlike manner.

(c)   If applicable, a final or temporary certificate of occupancy for the
      Expansion Space (if a temporary certificate, the conditions set forth
      therein shall be satisfactory to Landlord in its reasonable judgment) has
      been issued by the appropriate governmental body;

(d)   If requested by Landlord, Tenant shall have delivered to Landlord one set
      of reproducible "As Built" plans for the Tenant Improvements as prepared
      by Tenant's Space Planner and/or consultant;

(e)   No claim of lien shall be of record respecting the Tenant Improvements;
      and

(f)   Copies of all building permits, indicating inspection and approval of the
      Expansion Space by the issuer of said permits.


                              EXHIBIT "B" - Page 2
<PAGE>   7
                                   EXHIBIT "C"
                           NOTICE OF LEASE TERM DATES

TO:   ____________________________________               DATE: ___________, 199_
      ____________________________________

      Attention: _________________________

RE:   ________ Amendment dated ___________, 199__between
      __________________________ ("LANDLORD"), and _____________________________
      a _________________________ ("Tenant"), concerning Suite ____ (the 
      "EXPANSION SPACE"), located at  _____________, California.

Dear Mr. [or Ms.] ________________:

      In accordance with the ______ Amendment, Landlord wishes to advise and/or
confirm the following:

      1. That the Tenant is in possession of the Expansion Space and
acknowledges that under the provisions of the Amendment, the Expansion Space
Term commenced as of ________, 199_ and shall expire on ______________________ .

      2. That in accordance with the ________ Amendment, Basic Rent for the
Expansion Space Term commenced to accrue on ________, 199_.


AGREED AND ACCEPTED:

TENANT:

____________________________________,

a __________________________________

By:_________________________________

Print Name:_________________________

       Its:_________________________

By:_________________________________

Print Name:_________________________

       Its:_________________________


                              EXHIBIT "C" - Page 1
<PAGE>   8
                                   EXHIBIT "D"
                                CERTIFIED COPY OF
                         BOARD OF DIRECTORS RESOLUTIONS
                                       OF
                                HNC SOFTWARE INC.

        The undersigned, being the duly elected Corporate Secretary of HNC
Software, Inc., a Delaware corporation ("CORPORATION"), hereby certifies that
the following is a true, full and correct copy of the resolutions adopted by the
Corporation by unanimous written consent in lieu of a special meeting of its
Board of Directors, and that said resolutions have not been amended or revoked
as of the date hereof.

        RESOLVED, that the Corporation, is hereby authorized to execute, deliver
and fully perform that certain document entitled Second Amendment to Lease
("Amendment") by and between the Corporation and W9/PC Real Estate Limited
Partnership, a Delaware limited partnership, for the lease of space at 6020
Cornerstone Court West.

        RESOLVED FURTHER, that the Corporation is hereby authorized and directed
to make, execute and deliver any and all, consents, certificates, documents,
instruments, amendments, confirmations, guarantees, papers or writings as may be
required in connection with or in furtherance of the Amendment (collectively
with the Amendment, the "Documents") or any transactions described therein, and
to do any and all other acts necessary or desirable to effectuate the foregoing
resolution.

        RESOLVED FURTHER, that the following officer acting together:___________
_________________ as ______________________________________________________ and
______________________________ as ______________ are authorized to execute and
deliver the Documents on behalf of the Corporation, together with any other
documents and/or instruments evidencing or ancillary to the Documents, and in
such forms and on such terms as such officer(s) shall approve, the execution
thereof to be conclusive evidence of such approval and to execute and deliver on
behalf of the Corporation all other documents necessary to effectuate said
transaction in conformance with these resolutions.

Date: ___________, 1998            _____________________________________________

                                   ________________________, Corporate Secretary


                              EXHIBIT "D" - Page 1

<PAGE>   1



                                                                   EXHIBIT 21.01

                        LIST OF REGISTRANT'S SUBSIDIARIES

<TABLE>
<CAPTION>

             Name                     Jurisdiction of Organization     Percentage Owned by Registrant
             ----                     ----------------------------     ------------------------------
<S>                                   <C>                              <C> 
HNC Insurance Solutions, Inc.         California                          100%
Retek Information Systems, Inc.       Delaware                            100%
Retek Information Systems Inc.        Canada                              100%
Retek Information Systems Ltd.        United Kingdom                      100%
Retek Information Systems Pty. Ltd.   Australia                           100%
Retek Information Systems             France                              100%
Retek Information Systems GmbH        Germany                             100%
Practical Control Systems             Ohio                                100%
Technologies, Inc.
Financial Technology, Inc.            Illinois                            100%
Aptex Software, Inc.                  California                         85.8%
</TABLE>



<PAGE>   1


                                                                   EXHIBIT 23.04

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this
Registration Statement on Form S-4 of HNC Software Inc. of our report dated
January 29, 1998, except as to Note 11 which is as of February 13, 1998,
relating to the financial statements of HNC Software Inc., which appears in such
Prospectus. We also consent to the application of such report to the Financial
Statement Schedule for the three years ended December 31, 1997 listed under Item
21(b) of this Registration Statement when such schedule is read in conjunction
with the financial statements referred to in our report. The audits referred to
in such report also included this schedule.




PricewaterhouseCoopers LLP


San Diego, California
December 17, 1998




<PAGE>   1


                                                                   EXHIBIT 23.05

                       CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this
Amendment No. 1 to the Registration Statement on Form S-4 (No. 333-64527) of HNC
Software Inc. of our report dated April 6, 1998 relating to the financial
statements of Open Solutions Inc., which appears in such Prospectus. We also
consent to the application of such report to the Financial Statement Schedule
for the three years ended December 31, 1997 listed under Item 21(b) of this
Registration Statement when such schedule is read in conjunction with the
financial statements referred to in our report. The audits referred to in such
report also included this schedule.




PricewaterhouseCoopers LLP


Hartford, Connecticut
December 17, 1998




<PAGE>   1


                                      PROXY

                                HNC SOFTWARE INC.

               SPECIAL MEETING OF STOCKHOLDERS - NOVEMBER 20, 1998

           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

    The undersigned hereby appoints Robert L. North and Raymond V. Thomas, or
either of them, as proxies each with full power to appoint his substitute, and
hereby authorizes them to represent and to vote all the shares of stock of HNC
Software Inc. which the undersigned is entitled to vote, as specified on the
reverse side of this card, at the Special Meeting of Stockholders of HNC
Software Inc. (the "Meeting") to be held on November 20, 1998 at 9:30 a.m.,
P.S.T., at the Embassy Suites Hotel located at 4550 La Jolla Village Drive in
San Diego, California, and at any adjournment or postponement thereof.

WHEN THIS PROXY IS PROPERLY EXECUTED, THE SHARES TO WHICH THIS PROXY RELATES
WILL BE VOTED AS SPECIFIED AND, IF NO SPECIFICATION IS MADE, WILL BE VOTED FOR
THE PROPOSAL, AND THIS PROXY AUTHORIZES THE ABOVE DESIGNATED PROXIES TO VOTE IN
THEIR DISCRETION ON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING
OR ANY ADJOURNMENTS OR POSTPONEMENTS THEREOF TO THE EXTENT AUTHORIZED BY RULE
14a-4(c) PROMULGATED UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.

[SEE REVERSE SIDE] (CONTINUED AND TO BE SIGNED ON REVERSE SIDE)



<PAGE>   2


[X] Please mark votes as in this example

           THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR THE PROPOSAL:

        TO RATIFY THE AMENDMENT TO HNC'S 1995 EQUITY INCENTIVE PLAN TO INCREASE
        THE NUMBER OF SHARES OF COMMON STOCK RESERVED FOR ISSUANCE THEREUNDER BY
        700,000 SHARES.

            [ ] For        [ ] Against       [ ] Abstain

      Please sign exactly as your name(s) appear(s) on this Proxy. If shares of
stock stand of record in the names of two or more persons or in the name of
husband and wife, whether as joint tenants or otherwise, both or all of such
persons should sign this Proxy. If shares of stock are held of record by a
corporation, this Proxy should be executed by the president or vice president
and the secretary or assistant secretary. Executors, administrators or other
fiduciaries who execute this Proxy for a deceased stockholder should give their
full title. Please date this Proxy.

[ ] MARK HERE FOR ADDRESS CHANGE AND NOTE AT LEFT

Signature:__________________________ Date: _________________

WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING IN PERSON, YOU ARE URGED TO
COMPLETE, DATE, SIGN AND PROMPTLY MAIL THIS PROXY IN THE ENCLOSED RETURN
ENVELOPE SO THAT YOUR SHARES MAY BE REPRESENTED AT THE MEETING.



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