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Separation Agreement - HNC Software Inc., Retek Inc. and Retek Information Systems Inc.

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                              SEPARATION AGREEMENT


         This SEPARATION AGREEMENT (this "Agreement"), is made and entered into
effective as of November 23, 1999 (the "Effective Date") by and among HNC
Software Inc., a Delaware corporation ("HNC"), Retek Inc., a Delaware
corporation ("Retek") and Retek Information Systems, Inc., a Delaware
corporation ("RIS").

                                    RECITALS

         A. As of the Effective Date, Retek is a wholly-owned subsidiary of HNC,
and RIS is a wholly-owned subsidiary of HNC.

         B. HNC's Board of Directors has determined that it is in the best
interests of HNC and its stockholders to separate the businesses of Retek and
RIS from HNC's other operations. In furtherance of that objective, HNC has also
determined that it is appropriate and desirable for HNC to contribute and
transfer to Retek all of the capital stock of RIS which HNC owns (so that RIS
will become a wholly-owned subsidiary of Retek) together with certain other
assets as provided herein and to cause Retek to assume certain liabilities, in
accordance with this Agreement and the Ancillary Agreements (as defined herein)
(such contribution and transfer of assets by HNC and such assumption of
liabilities by Retek and RIS in accordance with this Agreement are collectively
hereinafter referred to as the "Separation").

         C. The Board of Directors of HNC and Retek have determined that it is
appropriate and desirable, on the terms and conditions contemplated by this
Agreement, that Retek issue and sell shares of its Common Stock (as defined
herein) in an initial public offering registered under the Securities Act (the
"Initial Public Offering"), provided that (i) immediately prior to the first
closing of the sale of shares of Retek's Common Stock in such Initial Public
Offering, HNC owns forty million (40,000,000) shares of the outstanding common
stock of Retek, all of which shares have been duly and validly issued, are
outstanding and are fully paid and non-assessable, and (ii) the total number of
shares of Retek's capital stock issued and sold in the Initial Public Offering
does not exceed Six Million Three Hundred Twenty-Five Thousand (6,325,000)
shares of Retek's Common Stock following the final closing of the Initial Public
Offering.

         D. HNC's current intention is that, after the closing of the Initial
Public Offering, HNC may in its sole discretion elect to distribute pro rata to
HNC's stockholders, as a dividend, the remaining shares of Common Stock of Retek
which it holds after the closing of the Initial Public Offering (the
"Distribution").

         E. It is appropriate and desirable to set forth in this Agreement the
agreements of the parties regarding the Separation and the transactions required
to effect the Separation and the Initial Public Offering, and the relationship
of HNC, Retek and RIS following the Separation.



<PAGE>   2


         NOW, THEREFORE, in consideration of the foregoing recitals and the
mutual agreements, provisions and covenants contained in this Agreement, the
parties hereby agree as follows:

                                    ARTICLE I

                               CERTAIN DEFINITIONS

     1.1 CERTAIN DEFINITIONS. As used herein, the following terms have the
following meanings:

         "Action" means any claim, suit, arbitration, inquiry, proceeding or
investigation by or before any court, governmental, regulatory or administrative
agency or commission, any other tribunal or other Governmental Authority, or any
arbitrator or arbitration panel.

         "Affiliate" of any specified Person means any other Person that,
directly or indirectly, controls, is controlled by or is under direct or
indirect common control with such specified Person. For purposes of this
definition, the term "control" (including, with correlative meanings, the terms,
"controls" "controlled by" or "under common control with") means the possession,
directly or indirectly, of the power to vote a majority of the securities having
voting power for the election of directors (or other Persons acting in similar
capacities) of such Person or otherwise to direct or cause the direction of the
management and policies of such Person, whether through the ownership of voting
securities, by contract or otherwise.

         "After Tax Basis" means a basis such that the Original Payment shall be
supplemented by a further payment to such Person so that the sum of the two
payments shall equal the Original Payment, after taking into account all Taxes
that would result from the receipt or accrual of such payments, if legally
required, with all payments hereunder being calculated on the assumption that
the payee is subject to Tax at the highest marginal rates of Tax applicable to
such class of taxpayer.

         "Ancillary Agreements" means, collectively, the Corporate Rights
Agreement, the License Agreement, the Services Agreement, the Stock Contribution
Agreement and the Tax Sharing Agreement.

         "Closing" has the meaning assigned to such term in Section 2.4.

         "Closing Date" has the meaning assigned to such term in Section 2.4.

         "Code" means the Internal Revenue Code of 1986, as amended.

         "Commission" means the U.S. Securities and Exchange Commission.

         "Common Stock" means the common stock, par value $0.01 per share, of
Retek.

         "Consents" means any consents, waivers or approvals from, or
notification requirements to, any third parties.





<PAGE>   3

         "Covered Claims" means any claim that is of a type covered by insurance
or self insurance of HNC in effect on the Closing Date and is listed and
described as a "Covered Claim" on Schedule 3.1(k).

         "Corporate Rights Agreement" means the Corporate Rights Agreement to be
entered into by and among HNC, Retek and RIS at the Closing in substantially the
form of Exhibit 1.

         "Distribution" has the meaning assigned to such term in Recital D of
this Agreement.

         "Effective Initial Public Offering Date" means the date on which the
Registration Statement is declared effective by the Commission.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Excluded Assets" has the meaning assigned to such term in Section
2.1(b).

         "Excluded Liabilities" has the meaning assigned to such term in Section
2.2(b).

         "Governmental Authority" means any federal, state, local, foreign or
international court, government, department, commission, board, bureau, agency,
official or other regulatory, administrative or governmental authority.

         "HNC Group" means HNC and each Person (other than Retek and RIS or any
subsidiary of Retek or RIS) that is an Affiliate of HNC immediately after the
Closing Date.

         "Liabilities" means any and all losses, claims, charges, debts,
demands, Actions, causes of action, suits, damages, obligations, payments, costs
and expenses, accounts, bonds, indemnities and similar obligations, covenants,
contracts, agreements, promises, guarantees and other liabilities, including all
contractual obligations, whether absolute or contingent, matured or not matured,
liquidated or unliquidated, accrued or not accrued, known or unknown, whenever
arising, in each case, whether or not recorded or reflected or required to be
recorded or reflected in the books and records or financial statements of any
Person, including, without limitation, those arising under (i) any law, rule or
regulation, (ii) any Action, threatened or contemplated Action (including the
costs and expenses of demands, assessments, judgments, arbitration awards,
settlements and compromises relating thereto and attorneys' fees and any and all
costs and expenses whatsoever (including without limitation allocated costs of
in-house counsel and other personnel), reasonably incurred in investigating,
preparing or defending against any such Actions or threatened or contemplated
Actions), (iii) any order or consent decree of any Governmental Authority or any
award of any arbitrator or mediator of any kind and (iv) any contract,
commitment or undertaking, including those arising under this Agreement or any
Ancillary Agreement.

         "License Agreement" means the Technology License Agreement to be
entered into between HNC and RIS at the Closing in substantially the form of
Exhibit 2.





<PAGE>   4

         "Lien" means any mortgage, security interest, pledge, encumbrance or
charge upon property of a Person to secure or obtain payment of a debt or
performance of an obligation, whether arising by contract, consent or by
operation of law.

         "Original Payment" means the payment received or deemed to have been
received by a Person before any adjustments made to take into account that such
payment is Taxable to the payee.

         "Person" means an individual, a general or limited partnership, a
corporation, a trust, a joint venture, an unincorporated organization, a limited
liability company, any other entity and any Governmental Authority.

         "Policy" has the meaning assigned to such term in Section 3.1(k).

         "Prospectus" means each preliminary, final or supplemental prospectus
forming a part of the Registration Statement.

         "Registration Statement" means the registration statement on Form S-1
(or other appropriate form promulgated by the Commission) filed by Retek with
the Commission to effect the registration for issuance by Retek in the Initial
Public Offering of shares of its Common Stock pursuant to the Securities Act, as
such registration statement may be amended or supplemented from time to time.

         "Retek Assets" has the meaning assigned to such term in Section 2.1(a).

         "Retek Business" means the business and operations of Retek and RIS,
which consist of developing, marketing, selling and supporting enterprise
software products that provide business solutions to retailers and their
suppliers.

         "Retek Bylaws" means the amended and restated bylaws of Retek which
will be in effect immediately prior to the closing of the Initial Public
Offering in the form thereof filed as an exhibit to the Registration Statement.

         "Retek Certificate" means the amended and restated certificate of
incorporation of Retek which will be in effect immediately prior to the closing
of the Initial Public Offering in the form thereof filed as an exhibit to the
Registration Statement.

         "Retek Contracts" means the following contracts and agreements, to
which HNC or any of its Affiliates is a party or by which HNC or any of its
Affiliates or and of their respective assets is bound, except for any such
contract or agreement that is contemplated to be retained by HNC or any of its
Affiliates (other than Retek or RIS) pursuant to any provision of this Agreement
or any Ancillary Agreement:

                  (a) the contracts or agreements listed or described on
         Schedule 1.1(a) (as such Schedule may be supplemented by mutual written
         agreement signed by HNC and Retek after the Effective Date and prior to
         the Closing Date);




<PAGE>   5

                  (b) any contracts or agreements entered into by HNC in the
         name of, or expressly on behalf of, Retek or RIS; and

                  (c) any guarantee, indemnity, representation, warranty or
         other Liability of Retek or HNC in respect of any other Retek Contract,
         any Retek Liability or the Retek Business.

         "Retek Group" means Retek, RIS and any subsidiary of either Retek or
RIS immediately after the Closing Date.

         "Retek Intercompany Payables" means all accounts payable and other
intercompany amounts payable by Retek, RIS or any other member of the Retek
Group to HNC or to any other member of the HNC Group as set forth in Schedule
2.6 or reflected in the books and records of the parties or otherwise documented
in writing in accordance with the parties' past practices.

         "Retek Intercompany Receivables" means all accounts receivable and
other intercompany amounts payable by HNC or by any other member of the HNC
Group to Retek, RIS or any other member of the Retek Group as set forth in
Schedule 2.6 or reflected in the books and records of the parties or otherwise
documented in writing in accordance with the parties' past practices.

         "Retek Liabilities" has the meaning assigned to such term in Section
2.2.

         "RIS Bylaws" means the bylaws of RIS, as amended.

         "RIS Certificate" means the restated certificate of incorporation of
RIS.

         "RIS Common Stock" means the shares of common stock of RIS, par value
$0.001 per share.

         "Securities Act" means the Securities Act of 1933, as amended.

         "Separation" has the meaning assigned to such term in Recital B of this
Agreement.

         "Separation Date" means the date determined by the Board of Directors
of HNC as the date on which the Separation shall be effected, which is
contemplated to occur on the date of the closing of the Initial Public Offering.

         "Services Agreement" means the Services Agreement to be entered into
between HNC, Retek and RIS at the Closing in substantially the form of Exhibit
3.

         "Stock Contribution Agreement" means the Stock Contribution Agreement
to be entered into by HNC, Retek and RIS at the Closing in substantially the
form of Exhibit 4.

         "Tax," "Taxes" or "Taxable" has the meaning given to such term in the
Tax Sharing Agreement.




<PAGE>   6

         "Tax Sharing Agreement" means the Tax Sharing Agreement to be entered
into among HNC and Retek at the Closing providing for certain tax related
matters, in substantially the form of Exhibit 5.

         "Underwriting Agreement" means the agreement executed between Retek and
the managing Underwriter with regard to the Initial Public Offering.

         "Underwriter" means a Person who agrees to act as an underwriter in
connection with the Initial Public Offering.

         Unless otherwise specified, any reference herein to any "subsidiary" or
"subsidiaries" of HNC shall not include either Retek or RIS.

                                   ARTICLE II

                             TRANSFER OF ASSETS AND
                            ASSUMPTION OF LIABILITIES

     2.1 TRANSFER OF ASSETS.

         (a) Assignment of Retek Assets. Effective upon the Closing, HNC will
assign, transfer, convey and deliver to Retek as of the Closing Date, and HNC
agrees to cause each of its subsidiaries (other than Retek and RIS) to assign,
transfer, convey and deliver to Retek as of the Closing Date, and Retek will
accept from HNC and such subsidiaries as of the Closing Date, all of HNC's and
such subsidiaries' respective right, title and interest in, to or under the
following assets and properties described in the following subparagraphs of this
Section 2.1(a) (collectively, the "Retek Assets"):

                  (i) all shares of RIS Common Stock owned directly or
         beneficially by HNC as of the Closing Date;

                  (ii) all of the Retek Contracts;

                  (iii) tangible copies of any sales, marketing and promotional
         literature, and other sales-related materials owned, used, associated
         with or employed by HNC relating primarily to the Retek Business.

         Notwithstanding the foregoing, Retek Assets shall not in any event
include any of the Excluded Assets referred to in Section 2.1(b) below.

         (b) Excluded Assets. For the purposes of this Agreement, "Excluded
Assets" shall mean all assets, properties and rights owned or held by HNC or any
member of the HNC Group that are not expressly described in any of the
subparagraphs of Section 2.1(a).





<PAGE>   7

     2.2  ASSUMPTION OF RETEK LIABILITIES.

          (a) Assumption. Effective upon the Closing, except as may be otherwise
expressly set forth in one or more of the Ancillary Agreements, from and after
the Closing Date, Retek and RIS hereby jointly and severally assume and agree to
faithfully and timely pay, perform, fulfill and satisfy all Retek Liabilities,
in accordance with their respective terms. As used herein, the term "Retek
Liabilities" means, collectively, all Liabilities (other than Taxes based on, or
measured by reference to, net income), including any employee-related or office
lease Liabilities, primarily relating to, arising out of or resulting from: (i)
the conduct or operation of the Retek Business at any time prior to, on or after
the Closing Date (including any Liability relating to, arising out of or
resulting from any act or failure to act by any director, officer, employee,
agent or representative of Retek or RIS (whether or not such act or failure to
act is or was within such Person's authority)); (ii) the conduct or operation of
any business conducted by Retek or RIS at any time after the Closing Date
(including any Liability relating to, arising out of or resulting from any act
or failure to act by any director, officer, employee, agent or representative or
Retek or RIS (whether or not such act or failure to act is or was within such
Person's authority)); and/or (iii) any Retek Assets. Notwithstanding the
foregoing, Retek Liabilities shall not in any event include any of the Excluded
Liabilities (as defined in Section 2.2(b) below).

         (b) Excluded Liabilities. For the purposes of this Agreement, the term
"Excluded Liabilities" shall mean (i) any and all Liabilities that are expressly
contemplated by this Agreement or by any Ancillary Agreement to be Liabilities
that will be retained by or assumed by HNC or any member of the HNC Group after
the Closing and (ii) all agreements and obligations of any member of the HNC
Group under this Agreement or under any of the Ancillary Agreements.

         (c) Third-Party Releases. Except as provided in any Ancillary Agreement
or with regard to any obligations of HNC under this Agreement and such Ancillary
Agreements, from and after the execution of this Agreement, HNC, Retek and RIS
will cooperate in good faith and Retek and RIS will take such reasonable steps
(at the expense of HNC) as HNC may request so that HNC may obtain from third
parties (other than Retek or RIS) the release, discharge and exoneration of
HNC's obligations or Liabilities (including but not limited to guaranty
obligations) to any such third party (whether or not such party's Consent is
required to effect the transfer of any Retek Asset or the assumption of any
Retek Liability as contemplated herein) and the discharge of any Lien on the
property of HNC or any of its subsidiaries, arising from or related to any of
the Retek Assets or Retek Liabilities or the Retek Business, to the end that
Retek and/or RIS will become the sole obligors, debtors or responsible parties
on such Liabilities (the "HNC Releases").

         (d) Retek Liabilities. Retek shall be responsible for all Retek
Liabilities, regardless of when or where such Liabilities arose or arise, or
whether the facts on which they are based occurred prior to or subsequent to the
Effective Date, regardless of where or against whom such Liabilities are
asserted or determined (including any Retek Liabilities arising out of claims
made by HNC's, Retek's or RIS's respective directors, officers, employees,
agents or Affiliates) or whether asserted or determined prior to the Effective
Date, and regardless of whether arising from or alleged to arise from
negligence, recklessness, violation of law, fraud or misrepresentation by HNC,
Retek or RIS or any of their respective directors, officers, employees,




<PAGE>   8

agents or Affiliates. As between the Retek Group and the HNC Group, no member of
the HNC Group shall have any responsibility for any Retek Liability.

     2.3 TRANSFERS NOT EFFECTED ON OR PRIOR TO THE CLOSING DATE. To the extent
any transfers of assets contemplated by Section 2.1 shall not have been fully
effected on or prior to the Closing Date, HNC and Retek shall cooperate to
effect such transfers as promptly as possible following the Closing Date.
Nothing herein shall be deemed to require the transfer of any assets or the
assignment or assumption of any Liabilities that by their terms or by operation
of law cannot be so transferred, assigned or assumed; provided, however, that
any such asset shall be deemed a Retek Asset for purposes of determining whether
any Liability is a Retek Liability; and provided, further, that HNC and Retek
and their respective Affiliates shall cooperate in seeking to obtain any
necessary Consents for the transfer of all assets and the assignment or
assumption of all Liabilities as contemplated by this Article II. In the event
that any transfer of assets or assignment or assumption of Liabilities
contemplated by this Article II has not been consummated effective as of the
Closing Date, (i) the parties retaining such assets shall thereafter hold such
assets in trust for the use and benefit of the party entitled thereto (at the
expense of the party entitled thereto); and (ii) the party retaining such
Liabilities shall thereafter hold such Liabilities for the account of the party
assuming such Liability or to whom such Liability is to be assigned pursuant
hereto, and in each such case shall take such other actions as may be reasonably
required in order to place the parties, insofar as reasonably possible, in the
same position as would have existed had such asset been transferred, or such
Liability been assigned or assumed as contemplated hereby. As and when any such
asset or Liability become transferable, assignable or assumable, as the case may
be, such transfer, assignment or assumption, as the case may be, shall be
effected forthwith. HNC and Retek agree that, as of the Closing Date, each party
hereto shall be deemed to have acquired complete and sole beneficial ownership
over all of the assets, together with all of the rights, powers and privileges
incidental thereto, that such party is entitled to acquire pursuant to the terms
of this Agreement.

     2.4 CLOSING MATTERS. The closing of the Separation under this Agreement
will take place at the offices of Fenwick & West LLP, Two Palo Alto Square, Palo
Alto, California, at 7:00 a.m. Pacific Time, concurrent with the consummation
and closing of the Initial Public Offering or at such other time and place as
HNC, Retek and RIS shall mutually agree upon in a writing signed by each of
them. The "Closing" and the date on which the Closing occurs is referred to
herein as the "Closing Date"), provided, however, that HNC's obligation to
consummate the Separation and to effect the Closing shall be subject to the
satisfaction and fulfillment of the conditions to HNC's obligations set forth in
Section 3.3. At the Closing, to the extent that they have not already done so,
the parties will take each of the following actions:

         (a) HNC shall execute and deliver to Retek (or to RIS, in the case of
deliverables relevant to RIS) such bills of sale, stock powers, assignments of
contracts and other instruments or transfer, conveyance and assignment as and to
the extent necessary to evidence the transfer, conveyance and assignment of all
of HNC's or its subsidiaries' (other than Retek or RIS) right, title and
interest in and to Retek Assets to Retek or RIS, as the case may be;

         (b) HNC shall execute and deliver each of the Ancillary Agreements to
Retek and RIS, as applicable;




<PAGE>   9

         (c) Retek shall execute and deliver to HNC (and, with regard to any
liabilities assumed for RIS, to RIS) such bills of sale, assumptions of
contracts and other instruments or assumption as may be necessary to evidence
the valid and effective assumption of Retek Liabilities by Retek and RIS;

         (d) Retek shall execute and deliver each of the Ancillary Agreements to
HNC and RIS, as applicable;

         (e) RIS shall execute and deliver to HNC and RIS such bills of sale,
assumptions of contracts and other instruments or assumption as may be necessary
to evidence the valid and effective assumption of any Retek Liabilities by RIS;

         (f) RIS shall execute and deliver each of the Ancillary Agreements to
HNC and Retek, as applicable; and

         (g) Either (i) Retek and RIS on the one hand, or (ii) HNC on the other
hand, as applicable under the provisions of Section 2.6, shall pay to the other
the amount payable by it under the provisions of Section 2.6 to settle all then
outstanding intercompany accounts in accordance with Section 2.6.

     2.5  NO REPRESENTATIONS OR WARRANTIES; CONSENTS.

         (a) Asset Status. Each of the parties hereto understands and agrees
that no party hereto is, in this Agreement, in any Ancillary Agreement or in any
other agreement or document contemplated by this Agreement, any Ancillary
Agreement or otherwise, making any representation or warranty whatsoever to any
other party as to the value, quality or condition of any assets of such party,
and all such representations and warranties are hereby disclaimed and negated.
The parties also agree and understand that there are no warranties whatsoever,
whether express or implied, given by any party to this Agreement, as to the
condition, quality, merchantability or fitness for a particular purpose of any
of the assets, businesses or other rights transferred or retained by the
parties, as the case may be, and all such assets, businesses and other rights
shall be "as is, where is" and "with all faults" (provided that the absence of
warranties given by the parties shall not negate the assumption of Liabilities
under this Agreement and shall have no effect on any manufacturers, sellers, or
other third party warranties that are intended to be transferred with such
assets).

         (b) Consents. Each party hereto understands and agrees that no party
hereto is, in this Agreement, in any Ancillary Agreement or in any other
agreement or document contemplated by this Agreement, any Ancillary Agreement or
otherwise, representing or warranting in any way that the obtaining of any
Consents, the execution and delivery of any amendatory agreements and the taking
of any filings or applications contemplated by this Agreement will satisfy the
provisions of any or all applicable laws or judgments or other instruments or
agreements relating to such assets. Notwithstanding the foregoing, the parties
shall use their reasonable good faith efforts to obtain all Consents (including
without limitation such Consents as may be required by any Governmental
Authorities), and to take all such further actions as shall be deemed reasonably
necessary to preserve for each of HNC, Retek and RIS, to the greatest extent
reasonably feasible (where the determination of feasibility shall take into
account the expense





<PAGE>   10

and time associated with preserving such benefits as compared to the value of
such benefits) to carry out the purposes and intent of this Agreement. If at any
time after the Closing Date any further action is necessary or desirable to
carry out the purposes of this Agreement, the proper officers and directors of
each party to this Agreement shall take all such necessary or desirable action,
provided that any financial cost shall be borne by the party receiving the
benefit of the action.

     2.6  SETTLEMENT AND OFFSET OF INTERCOMPANY ACCOUNTS.

         (a) Current Intercompany Accounts. The parties agree that, as of the
Effective Date: (i) the Retek Intercompany Payables consist entirely of those
payables designated as Retek Intercompany Payables in Part A of Schedule 2.6 in
the respective amounts set forth therein, and (ii) the Retek Intercompany
Receivables consist entirely of those accounts receivable designated as Retek
Intercompany Receivables in Part B of Schedule 2.6 in the respective amounts set
forth therein.

         (b) Closing Update Certificates. At the Closing, Retek (on behalf of
itself and the Retek Group) and HNC (on behalf of itself and the HNC Group)
shall each deliver to the other a certificate (the "Intercompany Accounts
Certificate"), executed by its respective Chief Financial Officer, which shall
set forth in reasonable detail (and be accompanied by appropriate supporting
documentation): (i) a list of all Retek Intercompany Payables and Retek
Intercompany Receivables arising or accrued on and after the Effective Date and
(ii) a list of all payments of Retek Intercompany Receivables made after the
Effective Date and prior to the Closing Date.

         (c) Closing Offset and Settlement Payment. At the Closing, Retek (on
behalf of itself, RIS and the Retek Group) and HNC (on behalf of itself and the
HNC Group), shall set-off, settle and pay all then outstanding Retek
Intercompany Payables and Retek Intercompany Receivables, as follows. The
parties shall examine Schedule 2.6, the HNC Intercompany Accounts Certificate
and the Retek Intercompany Accounts Certificate, and shall determine from such
documents: (i) the amount of Retek Intercompany Payables as of the Closing Date;
(ii) the amount of Retek Intercompany Receivables as of the Closing Date; (iii)
the amount, if any, by which the Retek Intercompany Payables as of the Closing
Date exceeds the Retek Intercompany Receivables as of the Closing Date (such
excess amount if any, being referred to as the "Net Retek Closing Payable"); and
(iv) the amount, if any, by which the total Retek Intercompany Receivables as of
the Closing Date exceed the Retek Intercompany Payables as of the Closing Date
(such excess amount, if any, being referred to as the "Net Retek Closing
Receivable"). If there is a Net Retek Closing Payable, then at the Closing Retek
shall pay to HNC an amount equal to the Net Retek Closing Payable. If there is a
Net Retek Closing Receivable, then at the Closing HNC shall pay to Retek an
amount equal to the Net Retek Closing Receivable. If there is no Net Retek
Closing Payable and no Net Retek Closing Receivable, then no payment shall be
made by HNC or Retek under this Section at the Closing. Any dispute between HNC
and Retek regarding the amount of Retek Intercompany Payables and/or Retek
Intercompany Receivables shall be resolved in accordance with Article VII.





<PAGE>   11

                                   ARTICLE III

                 THE SEPARATION AND THE INITIAL PUBLIC OFFERING

     3.1 COOPERATION PRIOR TO THE SEPARATION. In addition to the matters set
forth in Section 3.2 concerning preparations for the Initial Public Offering and
in Article V (concerning preparations, if undertaken, for the Distribution), and
subject to the conditions set forth in Section 3.3, from and after the date of
this Agreement until the earlier of the Closing or the termination of this
Agreement pursuant to Section 8.1, HNC, Retek and RIS shall cooperate with each
other and use their diligent good faith efforts to prepare for the Separation,
including doing each of the following:

         (a) Conduct Affairs in Ordinary Course. Except as set forth in this
Agreement and the Ancillary Agreements, Retek and RIS shall each continue to
conduct its affairs in the ordinary course of its business consistent with past
practices and shall operate its business for the sole benefit of HNC, its sole
stockholder; provided that notwithstanding the foregoing: (i) Retek shall be
entitled to exercise its option to purchase certain assets and/or stock of
Webtrak Limited pursuant to the terms and conditions of that certain Option
Agreement dated as of January 11, 1999 between Webtrak Limited and HNC, which
HNC has assigned to Retek, as such agreement was in effect on the date it was
assigned to Retek by HNC, pursuant to an Assignment of Option Agreement between
HNC and Retek dated as of September 9, 1999; and (ii) Retek may enter into, and
perform its obligations under, a loan or credit agreement with a bank or similar
financial institution for the borrowing of up to a maximum of Ten Million
Dollars ($10,000,000) in cash, provided that (i) such borrowing is on an
unsecured basis with no security interest or other lien imposed on any assets or
properties of Retek or any other member of the Retek Group or of HNC or any
other member of the HNC Group; and (ii) neither HNC nor any other member of the
HNC Group is required to provide any guarantee, indemnification or similar
assurance with regard to any borrowing or other obligation of Retek or any
member of the Retek Group with respect to such loan or credit agreement.

         (b) Equity Incentive Plans. Retek shall establish and maintain for the
benefit of its directors, officers, employees, consultants and advisors and
those of its subsidiaries, equity incentive, stock option and similar plans or
arrangements satisfactory and acceptable to HNC;

         (c) Board of Directors. Each of Retek, RIS and HNC shall nominate (and
if necessary and permitted to be done by them, elect and appoint) such persons
to the Retek and the RIS Board of Directors, as applicable, and such officers of
Retek and RIS, as applicable, as HNC may request in order to effect the
composition of the Board of Directors and officers of each of Retek and RIS
which must be in effect upon the Closing as provided in Section 3.3, consistent
with the provisions of the Corporate Rights Agreement, and to establish such
committees of their respective Boards as HNC may request in preparation for the
Initial Public Offering, consistent with the provisions of the Corporate Rights
Agreement;

         (d) Charter Documents Amendments. HNC shall cause Retek and RIS to
adopt by all necessary board and stockholder actions any amendments to their
Certificates of Incorporation and Bylaws to effect changes necessary thereto so
that, upon the Closing, their Certificates of




<PAGE>   12

Incorporation and Bylaws conform, in each case, to those required to be in
effect upon the Closing as provided in Section 3.3;

         (e) Remedial Actions. In addition to the actions set forth in the
preceding subparagraph (e), Retek and RIS shall consult with HNC in advance of
any remedial action therefor (unless delay in such consultation would create a
serious, present threat to the lives of HNC, Retek or RIS personnel or
third-parties present on their premises, or HNC's, Retek's or RIS's property)
when any event occurs which, in the judgment of Retek's or RIS's management
requires suspension or termination of any key Retek or RIS employee;

         (f) Consents. Retek and RIS shall assist HNC in identifying each Retek
Asset or Retek Liability to be assigned at the Closing which requires an HNC
Release or Consent to assignment and co-operate with HNC to obtain such HNC
Releases and such Consents;

         (g) Investigations. Retek and RIS shall notify HNC immediately (and in
no event more than 24 hours after the discovery thereof) of the receipt of any
correspondence or communications from any Governmental Authority revealing the
investigation of their affairs or any aspect thereof or correspondence or
communications from any Person revealing the commencement of any litigation
against either of them, and comply with HNC's reasonable requests in responding
to any such event;

         (h) Material Adverse Effect. Retek and RIS shall inform HNC as promptly
as reasonably possible upon the occurrence of any other event the occurrence of
which may have a material adverse affect on the Retek Business, on the
Separation, the Initial Public Offering or the Distribution;

         (i) Returns and Reports. Retek and RIS shall co-operate with HNC, in a
manner consistent with past practices, so that all tax returns filed jointly by
HNC with either or both of them shall be timely prepared and filed, any reports
(including HNC periodic reports under the Exchange Act) shall be timely prepared
and filed, and any other accounting or administrative matters between HNC and
Retek or HNC and RIS shall be handled in a reasonably prompt and prudent manner;

         (j) Stock Options. Retek hereby agrees with HNC that: (a) prior to the
closing of the Initial Public Offering, Retek shall not grant any options to
purchase shares of Retek common stock to any person who holds options to
purchase shares of HNC common stock, unless such person first executes and
delivers to Retek and HNC a Notice of Election to Exchange Options attached to
the Retek Employee Stock Option Exchange Program documentation, dated October
18, 1999, the form of which has been agreed upon by HNC and Retek; and (b) until
the closing of the Initial Public Offering the aggregate number of shares of
Retek common stock reserved and/or previously issued under all Retek stock
option plans or stock option agreements at any one time shall not exceed an
aggregate total of 10,100,000 shares of Retek common stock, as presently
constituted.

         (k) Insurance Matters. HNC, Retek and RIS shall use reasonable efforts
to maintain in full force and effect at all times up to and including the
Closing Date all property and casualty insurance programs currently maintained
by HNC, Retek or RIS as of the Effective Date, including, without limitation,
primary and excess general liability, automobile, workers'




<PAGE>   13

compensation, property and crime insurance policies (collectively, the
"Policies" and individually, a "Policy"). HNC and its subsidiaries shall retain,
with respect to any Covered Claims set forth on Schedule 3.1(k) relating to
periods prior to the Closing Date, all of their respective rights, benefits and
privileges, if any, under such Policies.

                           (i) Except to the extent otherwise expressly provided
                  in the Services Agreement, commencing on and as of the Closing
                  Date, Retek (for itself and for RIS) shall be responsible for
                  establishing and for maintaining its own separate insurance
                  programs (including, without limitation, primary and excess
                  general liability, automobile, workers' compensation,
                  property, director and officer liability, errors and
                  omissions, fire, crime, surety and other similar insurance
                  policies) for activities, losses and claims relating to any
                  period on or after the Closing Date involving Retek, RIS or
                  any other member of the Retek Group. Notwithstanding any other
                  agreement or understanding to the contrary, except as
                  expressly otherwise provided in the Services Agreement or in
                  Section 3.1(k)(ii) with respect to claims administration and
                  financial administration of the Policies, neither HNC nor any
                  of its subsidiaries shall have any responsibility for or
                  obligation to Retek or its subsidiaries relating to liability
                  and casualty insurance matters for any period, whether prior
                  to, at or after the Closing Date;

                           (ii) HNC shall be responsible for the claims
                  administration and financial administration of all Policies
                  for Covered Claims relating to the assets, ownership or
                  operation of the Retek Business prior to the Closing Date.
                  Retek shall be responsible for all administrative and
                  financial matters relating to insurance policies established
                  and maintained by Retek and RIS for claims relating to any
                  period on or after the Closing Date involving Retek or RIS or
                  any other member of the Retek Group.

                           (iii) Retek shall promptly notify HNC of any claim
                  (including any Covered Claim) relating to Retek or RIS under
                  one or more of the Policies relating to a period prior to the
                  Closing Date, and Retek and RIS agree to cooperate and
                  coordinate with HNC concerning any strategy HNC may reasonably
                  elect to pursue to secure coverage and payment for such claim
                  by the appropriate insurance carrier. Notwithstanding anything
                  contained herein, in any other agreement or applicable Policy
                  or any understanding to the contrary, except to the extent
                  otherwise expressly provided in the Services Agreement, Retek
                  assumes responsibility for, and shall pay to the appropriate
                  insurance carriers or otherwise, any premiums,
                  retrospectively-rated premiums, defense costs, indemnity
                  payments, deductibles, retentions or other charges, as
                  appropriate (collectively, "Insurance Charges"), whenever
                  arising, which shall become due and payable under the terms
                  and conditions of any applicable Policy in respect of any
                  liabilities, losses, claims, actions or occurrences, whenever
                  arising or becoming known, involving or relating to any of the
                  assets, businesses, operations or liabilities of Retek or RIS
                  during the period after the Closing Date. To the extent that
                  the terms of any applicable Policy provide that HNC or a
                  subsidiary thereof, as appropriate, shall have an obligation
                  to pay or guarantee the payment of any Insurance Charges for
                  which Retek has assumed responsibility in the





<PAGE>   14

                  preceding sentence, HNC or such subsidiary shall be entitled
                  to demand that Retek or RIS make such payment directly to the
                  person or entity entitled thereto. In connection with any such
                  demand, HNC shall submit to Retek or RIS a copy of any invoice
                  received by HNC or a subsidiary pertaining to such Insurance
                  Charges, together with appropriate supporting documentation,
                  if available. If Retek or its subsidiary fails to pay any such
                  Insurance Charges when due and payable, whether at the request
                  of the party entitled to payment or upon demand by HNC or a
                  subsidiary of HNC, HNC or a subsidiary of HNC may (but shall
                  not be required to) pay such Insurance Charges for and on
                  behalf of Retek or its subsidiary and, thereafter, Retek or
                  its subsidiary shall forthwith reimburse HNC or such
                  subsidiary of HNC for such payment; and

         (l) HNC, Retek and RIS shall take any and all other steps reasonably
necessary to prepare for the Separation and to cause the satisfaction of the
closing conditions thereto.

     3.2  PREPARATIONS FOR THE INITIAL PUBLIC OFFERING.

         (a) Efforts; Abandonment. Subject to the conditions specified in
Section 3.3, HNC, Retek and RIS shall use their good faith efforts to consummate
the Initial Public Offering; provided, however, that notwithstanding the
foregoing, HNC, in its sole and absolute discretion, may cause Retek to abandon
the Separation and the Initial Public Offering as provided in Section 8.1, in
which event the Separation shall not occur and Retek shall not consummate or
close the Initial Public Offering, and shall discontinue all efforts to
consummate the Initial Public Offering and shall withdraw the Registration
Statement as soon as practicable thereafter.

         (b) Expenses. HNC and Retek shall pay the costs and expenses as
described in Section 8.2 as set forth therein.

         (c) D&O Insurance. Retek shall diligently attempt to secure directors'
and officers' insurance on customary terms reasonably acceptable to HNC,
insuring the directors and officers of Retek.

         (d) Proceeds of the Initial Public Offering. The Initial Public
Offering will include only a primary offering of Common Stock by Retek. Retek
will retain the net proceeds of the primary offering.

     3.3 HNC BOARD ACTION; CONDITIONS PRECEDENT TO HNC'S OBLIGATION TO EFFECT
THE SEPARATION. HNC's Board of Directors shall, in its discretion, establish any
appropriate procedures, in addition to those set forth in this Section 3, in
connection with the Separation. In no event shall HNC be obligated to effect the
Separation and in no event shall the Separation occur until concurrently with
the initial closing of Retek's issuance and sale of shares of its Common Stock
in the Initial Public Offering and in no event shall the Separation occur unless
and until each of the following conditions, together with those established by
HNC's Board of Directors, shall have been satisfied, unless waived in writing by
HNC in its sole discretion:





<PAGE>   15

         (a) All necessary regulatory approvals from Governmental Authorities
for the Separation, the Initial Public Offering and the performance of this
Agreement shall have been received;

         (b) The Registration Statement shall have been filed with the
Commission, and Retek shall have been notified by the staff of the Commission
that it has no further comments on the Registration Statement and is prepared to
declare the Registration Statement effective upon Retek's request and no
stop-order or other action by the Commission prohibiting or enjoining the sale
of Retek Common Stock shall be outstanding and in effect;

         (c) All required actions and filings with regard to state securities
and blue sky laws of the United States (and any comparable laws under any
foreign jurisdictions) with respect to the Initial Public Offering shall have
been taken and no impediment other than the effectiveness of the Registration
Statement shall exist to the qualification under such securities laws of the
shares of Common Stock to be issued in the Initial Public Offering;

         (d) Retek's Board of Directors and executive officers, as named in the
Registration Statement and agreed on between Retek and HNC, shall have been
elected by HNC, as sole stockholder of Retek, and the Retek Certificate and the
Retek Bylaws, in the form set forth as exhibits to the Registration Statement,
shall be in effect;

         (e) Retek shall have entered into indemnity agreements with, and for
the benefit of, each of its directors identified in subparagraph (d) of this
Section 3.3, in a form reasonably satisfactory to HNC and shall have obtained
directors' and officers' insurance covering such directors under a policy
reasonably satisfactory in substance and amount to HNC;

         (f) RIS's Board of Directors, as agreed on between Retek and HNC, shall
have been elected by Retek as sole stockholder of RIS and RIS' officers, as
agreed between Retek and HNC shall have been elected;

         (g) The RIS Certificate and the RIS Bylaws, in the form satisfactory to
HNC and Retek, shall be in effect;

         (h) Retek shall have entered into an Underwriting Agreement with the
managing Underwriters for the Initial Public Offering which shall be reasonably
satisfactory to HNC;

         (i) An application for quotation of the Common Stock on the National
Market System of the Nasdaq Stock Market shall have been filed in connection
with the Initial Public Offering, and Retek shall have been notified that,
subject to the effectiveness of the Registration Statement and official notice
of issuance, the Common Stock has been accepted for quotation thereon;

         (j) HNC's Board of Directors, Retek's Board of Directors and RIS's
Board of Directors shall have formally approved this Agreement, the Separation,
the Initial Public Offering, the Ancillary Agreements and the related
transactions contemplated thereby and shall not have abandoned, deferred or
modified the Separation or the Initial Public Offering at any time prior to the
Closing Date;




<PAGE>   16

         (k) No restraining order or injunction or other order, decree or ruling
issued by a court or by a government, regulatory or administrative agency or
commission, and no statute, rule, regulation or executive order promulgated or
enacted by any Governmental Authority shall be in effect preventing the
consummation of the Separation or the Initial Public Offering or any of the
other transactions contemplated by this Agreement or any Ancillary Agreement,
except for the rules and regulations of such Governmental Authorities, the
Nasdaq Stock Market, the National Association of Securities Dealers and state
securities regulations which require that the Registration Statement be declared
effective before the consummation of the Initial Public Offering will be lawful;

         (l) The HNC Releases shall have been obtained and HNC shall have been
released from any liabilities, guarantees or other obligations with respect to
any indebtedness or other obligations of Retek or its subsidiaries; provided,
that the satisfaction of such conditions shall not create any obligation on the
part of HNC to effect the Separation or in any way limit HNC's power of
termination set forth in Section 8.1 or alter the consequences of any such
termination from those specified in such Section;

         (m) HNC shall be satisfied in its sole discretion that: (i) it will own
at least eighty-six and three-tenths percent (86.3%) of the outstanding shares
of the capital stock of Retek immediately following the final closing of the
Initial Public Offering (assuming the exercise in full of any over-allotment
option held by the Underwriters in connection with the Initial Public Offering),
and at least forty million (40,000,000) shares of Retek's Common Stock; (ii) all
of the outstanding shares of Retek's Common Stock owned by HNC shall be duly and
validly issued, fully paid and non-assessable; (iii) the number of shares of
Retek Common Stock that are subject to outstanding options to purchase shares of
Retek Common Stock immediately after the closing of the Initial Public Offering
will not exceed a total of 7,245,400 such shares; and (iv) all conditions to
permit any Distribution of the Common Stock held by HNC to HNC's stockholders
after the closing of the Initial Public Offering to qualify as a tax-free
distribution to HNC, any member of the HNC Group, Retek, and RIS and any member
of the Retek Group and HNC's stockholders, to the extent applicable as of the
time of the Closing, can be satisfied and there shall be no event or condition
that is likely to cause any of such conditions not to be satisfied thereafter;

         (n) Retek (and/or RIS, as applicable) shall have executed and delivered
each of the Ancillary Agreements to which each is a party;

         (o) Retek shall either (i) have set-off, settled and paid all
outstanding Retek Intercompany Payables and Retek Intercompany Receivables in
accordance with the terms of Section 2.6 or (ii) have executed and delivered to
HNC a full recourse promissory note reasonably satisfactory in form and
substance to HNC obligating Retek to pay in full to HNC all sums due from Retek
to HNC pursuant to Section 2.6 of this Agreement by no later than the second
(2nd) business day after the Closing, and any portion of such sum not paid to
HNC by the second (2nd) business day after the Closing shall bear interest at
the rate of six percent (6%) per annum until paid to HNC;

         (p) Such other actions as the parties hereto may, based upon the advice
of counsel, reasonably request to be taken prior to the Separation in order to
assure the successful




<PAGE>   17

completion of the Separation and the Initial Public Offering and the other
transactions contemplated by this Agreement shall have been taken; and

         (q) This Agreement shall not have been terminated.

     3.4 CONDITION PRECEDENT TO RETEK'S OBLIGATION TO EFFECT THE SEPARATION.
Retek shall not be obligated to effect the Separation unless the following
condition shall have been satisfied, unless such condition is waived in writing
by Retek in its sole discretion:

         (a) HNC shall have executed the Letter Agreement with John Buchanan,
Retek's Chief Executive Officer, in the form of Exhibit 6.

                                   ARTICLE IV

                                 INDEMNIFICATION

     4.1 RELEASE OF CLAIMS.

         (a) Release by Retek. Except as provided in Section 4.1(d), effective
as of the Closing Date, Retek does hereby, for itself and its Affiliates (other
than any member of the HNC Group), successors and assigns, and all Persons who
at any time prior to the Closing Date have been stockholders, directors,
officers, agents or employees of Retek or any of its Affiliates (other than any
member of the HNC Group) (in each case, in their respective capacities as such),
remise, release and forever discharge HNC and each member of the HNC Group,
their respective successors and assigns, and all Persons who at any time prior
to the Closing Date have been stockholders, directors, officers, agents or
employees of HNC or of any member of the HNC Group (in each case, in their
respective capacities as such), and their respective heirs, executors,
administrators, successors and assigns, from any and all Liabilities whatsoever,
whether at law or in equity (including any right of contribution), whether
arising under any contract or agreement, by operation of law or otherwise,
existing or arising from any facts or events occurring or failing to occur or
alleged to have occurred or to have failed to occur or any conditions existing
or alleged to have existed on or before the Closing Date, including in
connection with the transactions and all other activities to implement the
Separation and the Initial Public Offering.

         (b) Release by RIS. Except as provided in Section 4.1(d), effective as
of the Closing Date, RIS does hereby, for itself and its Affiliates (other than
any member of the HNC Group), successors and assigns, and all Persons who at any
time prior to the Closing Date have been stockholders, directors, officers,
agents or employees of RIS or any of its Affiliates (other than any member of
the HNC Group) (in each case, in their respective capacities as such), remise,
release and forever discharge HNC and each member of the HNC Group, their
respective successors and assigns, and all Persons who at any time prior to the
Closing Date have been stockholders, directors, officers, agents or employees of
HNC or of any member of the HNC Group (in each case, in their respective
capacities as such), and their respective heirs, executors, administrators,
successors and assigns, from any and all Liabilities whatsoever, whether at law
or in equity (including any right of contribution), whether arising under any
contract or agreement, by operation of law or otherwise, existing or arising
from any facts or events occurring or failing to occur or alleged to have
occurred or to have failed to occur or any conditions existing or




<PAGE>   18

alleged to have existed on or before the Closing Date, including in connection
with the transactions and all other activities to implement the Separation and
the Initial Public Offering.

         (c) Release by HNC. Except as provided in Section 4.1(d), effective as
of the Closing Date, HNC does hereby, for itself and each member of the HNC
Group, HNC's successors and assigns, and all Persons who at any time prior to
the Closing Date have been stockholders, directors, officers, agents or
employees of HNC or any member of the HNC Group (in each case, in their
respective capacities as such), remise, release and forever discharge Retek and
RIS, their respective successors and assigns, and all Persons who at any time
prior to the Closing Date have been stockholders, directors, officers, agents or
employees of Retek or RIS (in each case, in their respective capacities as
such), and their respective heirs, executors, administrators, successors and
assigns, from any and all Liabilities whatsoever, whether at law or in equity
(including any right of contribution), whether arising under any contract or
agreement, by operation of law or otherwise, existing or arising from any facts
or events occurring or failing to occur or alleged to have occurred or to have
failed to occur or any conditions existing or alleged to have existed on or
before the Closing Date, including in connection with the transactions and all
other activities to implement the Separation and the Initial Public Offering.

         (d) Exclusions. Nothing contained in Section 4.1(a), 4.1(b) or 4.1(c)
shall impair any right of any Person to enforce this Agreement, any Ancillary
Agreement or any agreements, arrangements, commitments or understandings that
are specified in this Agreement as not to terminate as of the Closing Date, in
each case in accordance with its terms. In addition, nothing contained in
Section 4.1(a), 4.1(b) or 4.1(c) shall release any Person from:

                  (i) Any Liability provided in or resulting from any agreement
         between Retek, and/or RIS, on the one hand, and any member of the HNC
         Group, on the other hand, that is specified in this Agreement as not to
         terminate as of the Closing Date, including but not limited to the
         liability and obligation of Retek or HNC, as applicable, to make any
         payment to the other required to be made by the provisions of Section
         2.6;

                  (ii) Any Liability, contingent or otherwise, assumed,
         transferred or assigned to such Person in accordance with this
         Agreement;

                  (iii) Any Liability of any Person under this Agreement
         (including but not limited to indemnification obligations of such
         Person under this Article IV) or under any Ancillary Agreement;

                  (iv) Any Liability for the sale, lease or receipt of goods,
         property or services purchased, obtained or used in the ordinary course
         of business by Retek or RIS from any member of the HNC Group or by any
         member of the HNC Group from Retek or RIS;

                  (v) Any Liability that the parties may have with respect to
         indemnification or contribution pursuant to this Agreement or any
         Ancillary Agreement, including but not limited to indemnification or
         contribution for claims brought against any of the parties by third
         Persons, which Liability shall be governed by the provisions of this
         Article IV and, if applicable, the appropriate provisions of the
         Ancillary Agreements; or





<PAGE>   19

                  (vi) Any Liability the release of which would result in the
         release of any Person other than a Person released pursuant to this
         Section 4.1; provided that the parties agree not to bring suit or
         permit any of their subsidiaries to bring suit against any Person with
         respect to any Liability to the extent that such Person would be
         released with respect to such Liability by this Section 4.1 but for the
         provision of this clause (vi).

         (e) Covenant Not to Make Claims on Released Matters. Retek shall not
make any claim or demand or bring or commence any Action asserting any claim or
demand, including any claim of contribution or indemnification, against HNC or
any member of the HNC Group or any other Person released pursuant to Section
4.1(a), with respect to any Liabilities released pursuant to Section 4.1(a). RIS
shall not make any claim or demand or bring or commence any Action asserting any
claim or demand, including any claim of contribution or indemnification, against
HNC or any member of the HNC Group or any other Person released pursuant to
Section 4.1(b), with respect to any Liabilities released pursuant to Section
4.1(b). HNC shall not make, and shall not permit any member of the HNC Group to
make, any claim or demand or bring or commence any Action asserting any claim or
demand, including any claim of contribution or indemnification, against Retek or
RIS or any other Person released pursuant to Section 4.1(c), with respect to any
Liabilities released pursuant to Section 4.1(c).

         (f) Intent. It is the intention of each of HNC, Retek and RIS, by
virtue of the provisions of this Section 4.1, to provide for a full and complete
release and discharge of all Liabilities existing or arising from all acts,
omissions and events occurring or failing to occur or alleged to have occurred
or failed to occur and all conditions existing or alleged to have existed on or
before the Closing Date, between or among Retek or RIS or any of their
Affiliates, on the one hand, and HNC or any member of the HNC Group, on the
other hand (including any contractual agreements or arrangements existing or
alleged to exist between or among such Persons on or before the Closing Date),
except as expressly set forth in Section 4.1(d). At any time, at the request of
any other party, each party shall execute and deliver, confirmations or releases
reflecting the provisions hereof.

         (g) Waiver. In connection with the releases granted by the parties
hereunder, each of Retek, RIS and HNC, on behalf of itself and each Person for
whom it granted a release pursuant to this Section 4.1, hereby expressly waives
any and all rights conferred upon it by the provisions of Section 1542 of the
California Civil Code and any similar law. Section 1542 of the California Civil
Code reads as follows: "A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH THE
CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR AT THE TIME OF EXECUTING
THE RELEASE, WHICH IF KNOWN BY HIM MUST HAVE MATERIALLY AFFECTED HIS SETTLEMENT
WITH THE DEBTOR." Each of the parties hereto hereby represents and warrants that
it has discussed the provisions of Section 1542 of the California Civil Code
with its respective counsel and has been advised of the effect of the waiver of
the provisions of that Section.

     4.2 INDEMNIFICATION BY RETEK AND RIS. Except as provided in Section 4.5 and
except as otherwise expressly provided in any of the Ancillary Agreements, from
and after the Closing Date, Retek and RIS shall indemnify, defend and hold
harmless HNC, each member of the HNC Group and each of their respective
directors, officers, agents and employees and each of the heirs, executors,
successors and assigns of any of the foregoing (collectively, the "HNC




<PAGE>   20

Indemnitees") from and against any and all Liabilities of the HNC Indemnitees
relating to, arising out of or resulting from any of the following items
(without duplication):

         (a) The failure of Retek or any other Person to pay, perform or
otherwise promptly discharge any Retek Liability or Retek Contract in accordance
with their respective terms, whether prior to or after the Closing Date or the
Effective Date hereof;

         (b) The Retek Business, any or all of the Retek Liabilities or any
Retek Contract;

         (c) Any breach by Retek or RIS of this Agreement or any of the
Ancillary Agreements;

         (d) Any untrue statement or alleged untrue statement of a material fact
or omission or alleged omission to state a material fact required to be stated
therein or necessary to make the statements therein not misleading, with respect
to all information contained in the Registration Statement or the Prospectus;
provided, however, that Retek and RIS shall not be liable to any HNC Indemnitee
in any such case to the extent (and only to the extent) that any such liability
arises out of or relates to any untrue statement or allegedly untrue statement
or omission or alleged omission, directly relating to HNC that is contained in
the following parts of the Prospectus or the Registration Statement: (i) the
first sentence of the fourth paragraph in "Prospectus Summary - Retek Inc.";
(ii) the first sentence of the first paragraph in "Prospectus Summary - Our
Relationship with HNC Software Inc."; (iii) the first sentence of the second
risk factor in "Risk Factors - Risks Related to Securities Markets and Ownership
of Our Common Stock"; (iv) the second paragraph in "Our Separation from HNC -
Overview"; (v) the second paragraph and the third sentence of the third
paragraph in "Our Separation from HNC - Possible Future Distribution by HNC of
our Common Stock"; and (vi) all the information in "Principal Stockholder".

         (e) Any violation by Retek or RIS of (i) the Securities Act, (ii) any
other federal law, rule or regulation regarding securities or (iii) any state or
other law, rule or regulation regarding securities in connection with the
Initial Public Offering or any subsequent offering or transaction involving
securities of Retek or RIS; provided however, that neither Retek nor RIS shall
be liable to provide indemnification for any Liabilities arising from matters
specifically described in the foregoing provisions of this subparagraph (e) that
were directly caused by or arose from information regarding an HNC Indemnitee
that is contained in a registration statement or prospectus giving rise to such
Liabilities if such information was provided by such HNC Indemnitee to Retek or
RIS specifically for use in such registration statement or prospectus; and

         (f) Any indemnification or contribution payments made by HNC to any of
the Underwriters (including but not limited to Credit Suisse First Boston
Corporation) that are paid or payable as a result of any indemnification
obligation of HNC or Retek arising under the Underwriting Agreement, that were
not paid or satisfied by Retek.

     4.3 INDEMNIFICATION BY HNC. Except as provided in Section 4.5 and except as
otherwise expressly provided in any of the Ancillary Agreements, from and after
the Closing Date, HNC shall indemnify, defend and hold harmless Retek and each
of its subsidiaries and each of their respective directors, officers and
employees and each of the heirs, executors, successors and




<PAGE>   21

assigns of any of the foregoing (collectively, the "Retek Indemnitees") from and
against any and all Liabilities of Retek Indemnitees relating to, arising out of
or resulting from any of the following items (without duplication):

         (a) The failure of HNC or any other member of the HNC Group or any
other Person to pay, perform or otherwise promptly discharge any Liability of
any member of the HNC Group (other than Retek Liabilities) in accordance with
its terms, whether prior to or after the Closing Date or the date hereof;

         (b) Any Liability of any member of the HNC Group other than Retek
Liabilities;

         (c) Any breach by HNC or any member of the HNC Group of this Agreement
or any of the Ancillary Agreements.

         (d) Any untrue statement or alleged untrue statement of a material fact
or omission or alleged omission to state a material fact required to be stated
in the Registration Statement or necessary to make the statements in the
Registration Statement not misleading to the extent, but only to the extent,
that such untrue statement or alleged untrue statement or omission or alleged
omission directly relates to HNC and is contained in the following parts of the
Prospectus or the Registration Statement: (i) the first sentence of the fourth
paragraph in "Prospectus Summary - Retek Inc."; (ii) the first sentence of the
first paragraph in "Prospectus Summary - Our Relationship with HNC Software
Inc."; (iii) the first sentence of the second risk factor in "Risk Factors -
Risks Related to Securities Markets and Ownership of Our Common Stock"; (iv) the
second paragraph in "Our Separation from HNC - Overview"; (v) the second
paragraph and the third sentence of the third paragraph in "Our Separation from
HNC - Possible Future Distribution by HNC of our Common Stock"; and (vi) all the
information in "Principal Stockholder.

     4.4 NOTICE AND PAYMENT OF CLAIMS. If any HNC Indemnitee or Retek Indemnitee
(the "Indemnified Party") determines that it is or may be entitled to
indemnification under this Article IV (other than in connection with any Action
subject to Section 4.5), then the Indemnified Party shall deliver to the person
from whom such indemnification is sought (the "Indemnifying Party"), a written
notice (a "Claim Notice") specifying, to the extent reasonably practicable, the
basis for its claim for indemnification and the amount for which the Indemnified
Party reasonably believes it is entitled to be indemnified. After the
Indemnifying Party shall have been notified of the amount for which the
Indemnified Party seeks indemnification, the Indemnifying Party shall, within
sixty (60) days after its receipt of such written notice, either (i) pay the
Indemnified Party such amount in cash or other immediately available funds (or
reach agreement with the Indemnified Party as to a mutually agreeable
alternative payment schedule) or (ii) object to the claim for indemnification or
the amount thereof by giving the Indemnified Party written notice setting forth
the grounds therefor. Any objection shall be resolved in accordance with the
provisions of Article VII. If the Indemnifying Party does not give such notice
within such sixty (60) day period, then the Indemnifying Party shall be deemed
to have acknowledged its liability for such claim to the extent that the amount
of such liability is specifically set forth in the Claim Notice and the
Indemnified Party may exercise any and all of its rights under applicable law to
collect such amount.




<PAGE>   22

     4.5 NOTICE AND DEFENSE OF THIRD-PARTY CLAIMS. Promptly following the
earlier of (A) receipt of written notice of the commencement by a third party of
any Action against or otherwise involving any Indemnified Party or (B) receipt
of written information from a third party alleging the existence of a claim
against an Indemnified Party, in either case, with respect to which
indemnification may be sought by an Indemnified Party pursuant to Article IV of
this Agreement (a "Third-Party Claim"), the Indemnified Party shall give the
Indemnifying Party prompt written notice thereof. Failure of the Indemnified
Party to give such written notice as provided in this Section 4.5 shall not
relieve the Indemnifying Party of its obligations under this Agreement, except
to the extent that the Indemnifying Party is prejudiced by such failure to give
notice. Such notice shall describe the Third-Party Claim in reasonable detail,
and attach any documentation received from the claimant (including, if
applicable, a copy of any complaint filed against the Indemnified Party)
asserting such Third-Party Claim.

         (a) Within thirty (30) days after receipt of such notice, the
Indemnifying Party may, by giving written notice thereof to the Indemnified
Party, (i) elect to assume the defense of such Third-Party Claim at its sole
cost and expense or (ii) object to the claim of indemnification for such
Third-Party Claim setting forth the grounds for its objection. Any objection
shall be resolved in accordance with the provisions of Article VII. If the
Indemnifying Party does not within such thirty (30) day period give the
Indemnified Party such notice, then the Indemnifying Party shall be deemed to
have acknowledged its liability for such Third-Party Claim.

         (b) Any defense of a Third-Party Claim as to which the Indemnifying
Party has elected to assume the defense shall be conducted by counsel employed
by the Indemnifying Party and reasonably satisfactory to HNC (in the case of HNC
Indemnitees) or Retek (in the case of Retek Indemnitees). The Indemnified Party
shall have the right to participate in such proceedings and to be represented by
counsel of its own choosing at the Indemnified Party's sole cost and expense;
provided that if the defendants or parties against which relief is sought in any
such claim include both the Indemnifying Party and one or more Indemnified
Parties and, in the reasonable judgment of HNC (in the case of HNC Indemnitees)
or Retek (in the case of Retek Indemnitees), an actual or potential conflict of
interest between such Indemnified Parties and such Indemnifying Party exists in
respect of such claim or with regard to a defense thereto, such Indemnified
Parties shall have the right to employ one firm of counsel selected by HNC (for
HNC Indemnitees) or Retek (for Retek Indemnitees) and in that event the
reasonable fees and expenses of such separate counsel (but not more than one
separate counsel reasonably satisfactory to the Indemnifying Party) shall be
paid by such Indemnifying Party.

         (c) If the Indemnifying Party assumes the defense of a Third-Party
Claim, then the Indemnifying Party may settle or compromise the claim without
the prior written consent of the Indemnified Party; provided that without the
prior written consent of HNC (in the case of HNC Indemnitees) and Retek (in the
case of Retek Indemnitees), the Indemnifying Party may not agree to any such
settlement unless as a condition to such settlement the Indemnified Party
receives a written release from any and all liability relating to such
Third-Party Claim and such settlement or compromise does not include any remedy
or relief to be applied to or against the Indemnified Party or its assets,
properties or business, other than monetary damages for which the Indemnifying
Party shall be fully responsible hereunder and which the Indemnifying Party pays
upon execution of the settlement.




<PAGE>   23

         (d) If the Indemnifying Party does not assume the defense of a
Third-Party Claim for which it has acknowledged liability for indemnification
under this Article IV, HNC (in the case of HNC Indemnitees) and Retek (in the
case of Retek Indemnitees) may pursue the defense of such Third-Party Claim and
choose one firm of counsel in connection therewith. The Indemnifying Party is
required to reimburse HNC or Retek, as the case may be, on a current basis for
its reasonable expenses of investigation, reasonable attorney's fees and
reasonable out-of-pocket expenses as incurred by HNC (in the case of HNC
Indemnitees) and Retek (in the case of Retek Indemnitees) in defending against
such Third-Party Claim and the Indemnifying Party shall be bound by the result
obtained with respect to such Third-Party Claim with respect to such
Indemnifying Party's indemnification obligations under this Article IV, provided
that the Indemnifying Party shall not be liable for any settlement effected
without the consent of the Indemnifying Party, which consent shall not be
unreasonably withheld, delayed or conditioned.

         (e) The Indemnifying Party shall pay to the Indemnified Party in cash
the amount for which the Indemnified Party is entitled to be indemnified (if
any) no later than the later of (i) the date on which the Indemnified Party
makes any payment in satisfaction (partial or otherwise) of the Third-Party
Claim or (ii) the date on which such Indemnifying Party's objection, if any, to
its responsibility for indemnification under this Article IV has been resolved
pursuant to the provisions of Article VII or by settlement or compromise or the
final nonappealable judgment of a court of competent jurisdiction.

     4.6 INSURANCE PROCEEDS. The amount that any Indemnifying Party is or may be
required to pay to any Indemnified Party pursuant to this Article IV shall be
reduced (including, without limitation, retroactively) by any insurance proceeds
or other amounts actually recovered by or on behalf of such Indemnified Parties
in reduction of the related Liability. If an Indemnified Party shall have
received the payment required by this Agreement from an Indemnifying Party in
respect of a Liability and shall subsequently actually receive insurance
proceeds, or other amounts in respect of such Liability as specified above, then
such Indemnified Party shall pay to such Indemnifying Party a sum equal to the
amount of such insurance proceeds or other amounts actually received in respect
of such Liability.

     4.7 CONTRIBUTION. If the indemnification provided for in this Article IV is
for any reason unavailable to an Indemnified Party in respect of any Liability
arising out of or related to information contained in or omitted from the
Registration Statement, then the Indemnifying Party, in lieu of indemnifying the
Indemnified Party shall contribute to the amount paid or payable by the
Indemnified Party as a result of such Liability in such proportion as is
appropriate to reflect the relative fault of the Indemnifying Party, on the one
hand, and the Indemnified Party, on the other hand, in connection with the
actions or omissions which resulted in such Liability. If the Liability in
question arises from statements or omissions that are untrue or are alleged to
be untrue, then the relative fault of the Indemnifying Party, on the one hand,
and of the Indemnified Party, on the other hand, shall be determined by
reference to, among other things, whether the untrue or alleged untrue statement
of a material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Indemnifying Party, on the one hand, or
the Indemnified Party, on the other hand; and the intent of the parties and
their relative knowledge, access to information and opportunity to correct or
prevent such statement or omission; but not by reference to any Indemnified
Party's stock ownership in Retek. Notwithstanding the foregoing, no person
guilty of fraudulent misrepresentation (within the meaning of Section 11(f)




<PAGE>   24

of the Securities Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.

     4.8 SUBROGATION. In the event of payment by an Indemnifying Party to any
Indemnified Party in connection with any Third-Party Claim, such Indemnifying
Party shall be subrogated to and shall stand in the first place of such
Indemnified Party as to any events or circumstances in respect of which such
Indemnified Party may have any right or claim relating to such Third-Party
Claim. Such Indemnified Party shall cooperate with such Indemnifying Party in a
reasonable manner, and at the cost and expense of such Indemnifying Party, in
prosecuting any subrogated right or claim, provided, however, that this right of
subrogation shall be construed in such a way so that it does not discharge any
insurance carrier for an Indemnifying Party for any obligation under any
insurance policy which provides coverage for such Indemnifying Party from any
loss asserted or involved in or related to such Third-Party Claim.

     4.9 NO THIRD-PARTY BENEFICIARIES. This Article IV shall inure to the
benefit of, and be enforceable by HNC, the HNC Indemnitees, Retek and Retek
Indemnitees and their respective successors and permitted assigns. The
indemnification provided for by this Article IV shall not inure to the benefit
of any other third party or parties, relieve any insurer who would otherwise be
obligated to pay any claim of the responsibility to pay such claim or, solely by
virtue of the indemnification provisions hereof, provide any subrogation rights
with respect thereto. Each party agrees to waive such subrogation rights against
the other to the fullest extent permitted.

     4.10 REMEDIES CUMULATIVE. The remedies provided in this Article IV shall be
cumulative and shall not preclude assertion by any Indemnified Party of any
other rights or the seeking of any and all other remedies against an
Indemnifying Party. The procedures set forth in this Article IV, however, shall
be the exclusive procedures governing any indemnity action brought under this
Article IV or otherwise relating to Liabilities.

     4.11 SURVIVAL OF INDEMNITIES. The rights and obligations of each of HNC and
Retek and their respective Indemnitees under this Article IV shall survive the
sale or other transfer by it of any assets or businesses or the assignment by it
of any Liabilities and shall, without limitation, survive the consummation and
closing of the Separation, the Initial Public Offering and (if it should ever
occur) the Distribution.

                                    ARTICLE V

                                THE DISTRIBUTION

     5.1 POTENTIAL DISTRIBUTION. HNC currently intends (but HNC has not agreed
or committed that), following the consummation of the Initial Public Offering,
to complete the Distribution, subject to the satisfaction and fulfillment of
several conditions. These conditions would include, but not necessarily be
limited to, the following conditions: (a) HNC's receipt of a written ruling from
the Internal Revenue Service that the Distribution qualifies for tax-free
treatment under Section 355 of the Code such that HNC's stockholders and HNC and
its Affiliates will not recognize income for federal income tax purposes as a
result of the Distribution, (b) the approval and declaration of the Distribution
by HNC's Board of Directors, (c) the absence of any change in economic or market
conditions or other circumstances that would cause HNC's Board of




<PAGE>   25

Directors to conclude that the Distribution was not in the best interests of HNC
and HNC's stockholders, and (d) HNC being able to effect the Distribution in
compliance with applicable laws (including but not limited to applicable
securities laws and the Delaware General Corporation Law) and HNC's contractual
obligations. However, HNC shall not have any obligation or commitment whatsoever
so any Person (including but not limited to Retek or RIS or their security
holders) to effect or consummate the Distribution. HNC shall, in its sole and
absolute discretion, determine when and whether to proceed with all or part of
the Distribution and all terms of the Distribution, including, without
limitation, the form, structure and terms of any transaction(s) and/or
offering(s) to effect the Distribution and the timing of and conditions to the
consummation of the Distribution. In addition, HNC may at any time and from time
to time until the completion of the Distribution abandon, modify or change any
or all of the terms of the Distribution, including without limitation, by
accelerating or delaying the timing of the consummation of all or part of the
Distribution. Retek shall cooperate with HNC in all commercially reasonable
respects to accomplish the Distribution (if HNC elects, in its sole and absolute
discretion, to effect the Distribution) and shall, at HNC's direction, promptly
take any and all actions necessary or desirable to effect the Distribution,
including, without limitation, the registration under the Securities Act of
Retek Common Stock on an appropriate registration form or forms to be designated
by HNC. HNC shall select any investment banker(s) and manager(s) in connection
with the Distribution, as well as any other institutions providing services in
connection with the Distribution.

     5.2 CERTAIN MATTERS. If HNC elects, in its sole discretion, to effect the
Distribution, then from and after the distribution of Retek Common Stock in
connection with any transaction(s) included as part of the Distribution and
until such Retek Common Stock is duly transferred in accordance with applicable
law, Retek shall regard the Persons receiving Retek Common Stock in such
transaction(s) as record holders of Retek Common Stock in accordance with the
terms of such transaction(s) without requiring any action on the part of such
Persons. Retek agrees that, subject to any transfers of such stock, (a) each
such holder shall be entitled to receive all dividends payable on, and exercise
voting rights and all other rights and privileges with respect to, the shares of
Retek Common Stock then held by such holder and (b) each such holder shall be
entitled, without any action on the part of such holder, to receive one or more
certificates representing, or other evidence of ownership of, the shares of
Retek Common Stock then held by such holder. HNC shall cooperate, and shall
instruct the HNC stock transfer agent to cooperate, with Retek and the Retek
stock transfer agent, and Retek shall cooperate, and shall instruct the Retek
stock transfer agent to cooperate, with HNC and the HNC Transfer Agent, in
connection with all aspects of the Distribution and all other matters relating
to the issuance and delivery of certificates representing, or other evidence of
ownership of, the shares of Retek Common Stock distributed to the holders of HNC
Common Stock in connection with any transaction(s) included as part of the
Distribution. Following the Distribution, HNC shall promptly, but in no event no
later than two (2) business days thereafter, instruct the HNC stock transfer
agent to deliver to the Retek stock transfer agent true, correct and complete
copies of the stock and transfer records reflecting the holders of HNC Common
Stock receiving shares of Retek Common Stock in connection with any
transaction(s) included as part of the Distribution.

     5.3  FURTHER ASSURANCES REGARDING THE DISTRIBUTION.

          (a) General. In addition to the actions specifically provided for
elsewhere in this Agreement, if HNC elects, in its sole discretion, to effect
the Distribution, then Retek shall, at




<PAGE>   26

HNC's direction, use all commercially reasonable efforts to take, or cause to be
taken, all actions, and to do, or cause to be done, all things commercially
reasonably necessary, proper or expeditious under applicable laws, regulations
and agreements in order to consummate and make effective the Distribution as
promptly as reasonably practicable. In particular, Retek agrees with HNC that,
if in the reasonable opinion of counsel for HNC or for Retek, it is necessary to
register HNC's transfer of its shares of Retek stock to HNC's stockholders in
the Distribution in order for the Distribution to be effected in compliance with
the Securities Act and/or for recipients of shares of Retek stock in the
Distribution to be able to immediately effect public resales of such Retek
shares in compliance with the Securities Act, then Retek will promptly cooperate
with HNC to cause the Distribution to be registered under the Securities Act,
provided that HNC's counsel has first consulted with Retek's counsel regarding
the necessity of such registration. Without limiting the generality of the
foregoing, Retek shall, at HNC's direction, cooperate with HNC, and execute and
deliver, or use all commercially reasonable efforts to cause to have executed
and delivered, all instruments, including instruments of conveyance, assignment
and transfer, and to make all filings with, and to obtain all consents,
approvals or authorizations of, any domestic or foreign Governmental Authority
and each self-regulatory body and securities exchange or automated inter-dealer
quotation system on which Retek's Common Stock is listed or quoted requested by
HNC in order to consummate and make effective the Distribution.

          (b) Assistance. After the Closing Date, Retek and RIS shall cooperate
with HNC and shall take such actions as HNC may reasonably request (including
without limitation providing all information, preparing and filing all
documentation as HNC may reasonably request and, if requested by HNC,
participating in any conferences with the Internal Revenue Service to seek a
ruling as to whether the Distribution qualifies for tax-free treatment under
Section 355 of the Code such that HNC's stockholders and HNC and its Affiliates
will not recognize income for federal income tax purposes as a result of the
Distribution to assist HNC in planning or effecting the Distribution and/or in
determining whether the Distribution can be effected without recognition of
taxable income as aforesaid. If the Internal Revenue Service provides HNC with a
favorable ruling that the Distribution will be tax-free under Section 355 of the
Code, then after the Closing Date, Retek and RIS shall take such actions and
refrain from taking such actions as necessary to insure, as nearly as reasonably
possible consistent with the fiduciary duties which HNC, Retek and RIS owe to
stockholders, that the conditions announced in any such ruling to the tax-free
nature of the Distribution are satisfied.

          (c) Participation Rights. If HNC elects, in its sole and absolute
discretion, to effect the Distribution, then HNC shall keep Retek informed in a
timely manner of all material actions taken or proposed to be taken by HNC in
connection therewith. HNC shall, reasonably in advance of any submission by HNC
to the Internal Revenue Service of any request for a ruling by the Internal
Revenue Service as to whether the Distribution qualifies for tax-free treatment
under Section 355 of the Code such that HNC's stockholders and HNC and its
Affiliates will not recognize income for federal income tax purposes as a result
of the Distribution, (A) provide Retek with a draft copy of such ruling request,
(B) reasonably consider Retek's comments on such draft copy, and (C) provide
Retek with a final copy of such ruling request submitted to the Internal Revenue
Service.




<PAGE>   27

          (d) Capital Stock. Retek shall not issue any shares of its capital
stock such that, immediately following such issuance, HNC would be unable to
effect the Distribution on a tax-free basis as described in Section 5.1 and in
Section 5.3(b).

     5.4 RETEK BOARD OF DIRECTORS. HNC and Retek shall each take all actions
which may be required to elect or otherwise appoint as directors of Retek,
effective immediately after the date on which the Distribution occurs, such
individuals as may be designated by Retek's Board of Directors (which
designation shall be approved by the majority of Retek's directors who are at
such time neither officers nor directors of HNC) as additional or substitute
members of the Board of Directors of Retek on the date on which the Distribution
occurs. HNC shall use its diligent and reasonable efforts to cause those members
of Retek's Board of Directors who are HNC's designees pursuant to Section 3.1 of
this Agreement or the Corporate Rights Agreement to resign from Retek's Board of
Directors as promptly as practicable after the date on which the Distribution
occurs.

     5.5  CERTAIN POST-DISTRIBUTION TRANSACTIONS.

          (a) Actions Inconsistent with the Rulings. In the event that stock of
Retek (or any successor thereto) is ultimately distributed to any or all of
HNC's stockholders pursuant to transactions intended to qualify under Section
355 of the Code, Retek shall not take or fail to take, and shall not permit any
Affiliate of Retek to take or fail to take, any action if such act or failure to
act would be inconsistent with any representation, covenant, information or
condition in any ruling, including for all purposes of this Agreement any
supplemental rulings (collectively, the "Rulings") issued by the Internal
Revenue Service in connection with the Distribution or in any representation,
covenant or any information included in any submission to the Internal Revenue
Service in connection with the Rulings (together with the Rulings, the "Rulings
and Submissions").

          (b) Liability. Notwithstanding anything to the contrary in this
Agreement or the Tax Sharing Agreement, Retek and the Affiliates of Retek (other
than HNC or any member of the HNC Group) as of the time immediately following
the occurrence of the Distribution shall be jointly and severally liable for,
and shall indemnify and hold harmless HNC and each Affiliate of HNC (other than
any member of the Retek Group) from and against, on an After-Tax Basis, any and
all Taxes (including interest, penalties and additions to Tax) resulting from
the Distribution to the extent such Taxes result in whole or in part from (i)
any event or transaction occurring after the Distribution that involves the
stock, assets or business of Retek or any of its Affiliates, whether or not such
event or transaction is the result of the direct actions of, or within the
control of, Retek or any of its Affiliates, (ii) any act or failure to act on
the part of Retek or any of its Affiliates after the Distribution, (iii) the
breach of any representation, covenant, information or condition regarding Retek
or any of its Affiliates included in the Rulings and Submissions or in any
Subsequent Ruling (as defined below), or (iv) any actions contemplated by
Section 5.5(c) below, regardless of whether HNC consents to such actions
pursuant to Section 5.5(d) below.

          (c) Covenants Specific to Distribution Tax Matters. Retek agrees that
during the two (2) year period immediately following completion of the
Distribution (the "Restriction Period"), Retek and RIS will not, and will not
permit any Affiliates of Retek or RIS to:





<PAGE>   28

                  (i)    sell, exchange, distribute or otherwise transfer or
                         agree to sell, exchange, distribute or transfer, all or
                         a substantial portion of its assets (within the meaning
                         of Rev. Proc. 77-37), or any stock or equity interest
                         in any Affiliate of Retek, in a single transaction or a
                         series of transactions;

                  (ii)   voluntarily dissolve or liquidate or enter into any
                         merger, consolidation or reorganization transaction;

                  (iii)  (A) solicit any Person or Persons to make a tender
                         offer for the equity securities of Retek, (B)
                         participate in or support any unsolicited tender offer
                         for the equity securities of Retek or (C) approve any
                         proposed business combination or any transaction which
                         would result in any Person or Persons acquiring
                         directly or indirectly a 50% or greater interest
                         (within the meaning of Section 355(e) of the Code) in
                         Retek;

                  (iv)   whether before or subsequent to the expiration of the
                         Restriction Period, engage in any action described in
                         clause (iii) above if it is pursuant to an arrangement
                         negotiated (in whole or in part) prior to or subsequent
                         to the Distribution, even if at the time of the
                         Distribution it is subject to various conditions;

                  (v)    liquidate, dispose of or otherwise discontinue or
                         otherwise fail to maintain the active conduct of the
                         trade or business relied upon in connection with the
                         Rulings and Submissions;

                  (vi)   sell or otherwise issue to any Person or Persons, or
                         redeem or otherwise acquire from any Person or Persons,
                         any of its outstanding stock (other than stock
                         purchases meeting the requirements of section
                         4.05(1)(b) of Rev. Proc. 96-30) that in the aggregate
                         (including shares issued and sold in the Initial Public
                         Offering) would result in the acquisition of a 50% or
                         greater interest (within the meaning of Section 355(e)
                         of the Code) directly or indirectly by any Person or
                         Persons in Retek;

                  (vii)  issue any stock or equity interests (except pursuant to
                         the exercise of employee stock options) that in the
                         aggregate (including shares issued and sold in the
                         Initial Public Offering) would result in the
                         acquisition of a 50% or greater interest (within the
                         meaning of Section 355(e) of the Code) directly or
                         indirectly by any Person or Persons in Retek;

                  (viii) enter into any agreement for the sale or other
                         disposition of its stock or equity interests;

                  (ix)   take any action inconsistent with the representations,
                         covenants or information included in the Rulings and
                         Submissions or that would result in the Distribution
                         being Taxable in whole or part to HNC or any of its
                         Affiliates or HNC's stockholders; or





<PAGE>   29

                  (x)    engage in any agreement, understanding, arrangement or
                         negotiation, directly or indirectly, with any Person or
                         Persons with respect to any of the restricted actions
                         described in clauses (i) through (ix) above.

          If the Internal Revenue Service issues guidance, or Treasury
Regulations are issued under Section 355(e) of the Code, the parties hereby
agree to meet to review the covenants set forth in this Section 5.5(c) and to
consider making appropriate revisions thereto to reflect such guidance and/or
Treasury Regulations.

          (d) Exceptions to Covenants. Notwithstanding Section 5.5(c) above,
Retek or any Affiliate of Retek may take actions inconsistent with the covenants
contained in such Section 5.5(c), if, and only if: (i) HNC expressly consents in
writing to such actions, such consent to be given or withheld by HNC in its sole
and absolute discretion taking into account solely the preservation of the
tax-free status of the Distribution under Section 355 of the Code; or (ii) HNC
has obtained a ruling from the Internal Revenue Service, in form and substance
reasonably satisfactory to HNC, to the effect that such proposed transaction
will not adversely affect the tax-free status of the Distribution under Section
355 of the Code (a "Subsequent Ruling"). Retek agrees that HNC is to have no
liability for any Tax to the extent such Tax results from any restricted action
or actions of Retek or any Affiliate of Retek that are permitted pursuant to
this Section 5.5(d) and Retek agrees to indemnify and hold harmless HNC against
any such Tax notwithstanding the giving by HNC of its consent to such restricted
action or actions or the receipt by HNC of any Subsequent Ruling.

         (e) Cooperation. HNC shall cooperate with Retek in connection with a
request by Retek that HNC seek a Subsequent Ruling; provided, however, that HNC
shall have no obligation to seek a Subsequent Ruling if, after consulting with
its tax advisors, HNC in good faith believes that (a) it is not reasonably
probable that the Internal Revenue Service will rule that the proposed action or
transaction by Retek will not adversely affect the tax-free status of the
Distribution under Section 355 of the Code; or (b) seeking the Subsequent Ruling
may adversely affect or change any prior ruling or determination by the Internal
Revenue Service that the Distribution qualifies for tax-free treatment under
Section 355 of the Code. Such cooperation shall include, without limitation,
providing any information and/or representations required to enable HNC or its
counsel to obtain and maintain any Subsequent Ruling; provided that HNC's
reasonable refusal to give or make a representation will not be deemed to be a
failure to cooperate.

         (f) Notice. Until the first day after the Restriction Period, Retek
will provide adequate written notice to HNC of any action described in
paragraphs (i) through (x) of Section 5.5(c) above, without regard to the
exceptions thereto, within a period of time reasonably sufficient to enable HNC
(i) to make the determination to give or withhold its consent to such action as
referred to in Section 5.5(d), (ii) to prepare and seek any Subsequent Ruling in
connection with such proposed action, or (iii) to seek injunctive relief
enjoining such action pursuant to Section 5.6 hereof in a court of competent
jurisdiction. Each such notice shall set forth the terms and conditions of the
proposed action, including, without limitation, the nature of any related action
proposed to be taken by the Board of Directors of Retek, the approximate number
of shares of Retek stock (if any) proposed to be sold by Retek or otherwise
issued by Retek in such proposed action, if any, the approximate value of
Retek's assets (or assets of any of the Retek Subsidiaries) proposed to be
transferred in such proposed action, if any, and the




<PAGE>   30

proposed timetable for such transaction, all with sufficient particularity to
enable HNC to make such determination, to prepare and seek such Subsequent
Ruling or to seek such injunctive relief. Promptly, but in any event within
thirty (30) days, after HNC receives such written notice from Retek, HNC shall
notify Retek in writing of such determination or of HNC's intent to seek (or not
to seek) a Subsequent Ruling and the proposed date for the initial submission
thereof, which date shall not be more than sixty (60) days after HNC so notifies
Retek of its intent to seek such Subsequent Ruling, provided that such 30-day
period or 60-day period, as the case may be, shall be appropriately extended for
any period of noncompliance by Retek with this Section 5.5(f). Notwithstanding
the foregoing, nothing in this Section 5.5(f) is intended to permit Retek to
take any action described in paragraphs (i) through (x) of Section 5.5(c) unless
such action is taken as permitted strictly in accordance with the provisions of
Section 5.5(d).

     5.6 ENFORCEMENT. The parties hereto acknowledge that irreparable harm would
occur in the event that any of the provisions of this Agreement were not
performed in accordance with their specific terms or were otherwise breached.
The parties hereto agree that, in order to preserve the tax-free treatment of
the Distribution, injunctive relief is appropriate to prevent any violation by
Retek or RIS of the foregoing covenants, provided, however, that injunctive
relief shall not be the exclusive legal or equitable remedy for any such
violation.

                                   ARTICLE VI

                              ACCESS TO INFORMATION

     6.1 PROVISION OF CERTAIN CORPORATE DOCUMENTS. Each of HNC, Retek and RIS
shall arrange as soon as practicable following the Closing Date for the
provision to the other party of the other party's existing corporate governance
documents (e.g. certificate of incorporation, by laws, minute books, stock
registers, stock certificates, etc.) in its possession relating to the other
party. Each party may make and keep copies of all such documents as it is
required to provide to any other party hereunder.

     6.2 ACCESS TO INFORMATION. From and after the Closing Date, each of HNC,
Retek and RIS shall afford the other, including its accountants, counsel and
other designated representatives, reasonable access (including using reasonable
efforts to give access to persons or firms possessing information) and
duplicating rights during normal business hours to all records, books,
contracts, instruments, computer data and other data and information in such
party's possession relating to the business and affairs of the other (other than
data and information subject to an attorney/client or other privilege), insofar
as such access is reasonably required by the other party including, without
limitation, for audit, accounting and litigation purposes, as well as for
purposes of fulfilling disclosure and reporting obligations. In particular, for
so long as HNC is required to include, incorporate or reflect financial
information, financial statements or operating results of Retek and/or any other
member of the Retek Group (a) in HNC's financial statements under generally
accepted accounting principles and/or (b) in any reports or filings required to
be made by HNC under the Securities Act, the Exchange Act or other applicable
law, then Retek shall (i) provide HNC in good faith with prompt and full access
to such information, including the right to duplicate and retain copies of such
information, (ii) cooperate promptly with HNC as necessary to enable HNC to
timely prepare and file or make any such financial statements, reports or
filings and (iii) provide all time, attention and effort of Retek personnel as




<PAGE>   31

may be reasonably requested by HNC to assist HNC in preparing any such financial
statements, reports or filings.

     6.3 LITIGATION COOPERATION. Each of HNC, Retek and RIS shall use reasonable
efforts to make available to the other(s), upon written request, its officers,
directors, employees and agents as witnesses to the extent that such persons may
reasonably be required in connection with any legal, administrative or other
proceedings arising out of the business of the other in which the requesting
party may from time to time be involved.

     6.4 REIMBURSEMENT. Each party providing witnesses under Section 6.3 to the
other shall be entitled to receive from the party for whom the witness is
provided, upon the presentation of invoices therefor, payment for all
out-of-pocket costs and expenses as may be reasonably incurred in providing such
witnesses.

     6.5 CONFIDENTIALITY. Subject to Section 6.6, each party and each of its
subsidiaries shall hold and shall cause its respective directors, officers,
employees, agents, consultants and advisors to hold, in strict confidence,
unless compelled to disclose by judicial or administrative process or, in the
opinion of its counsel, by other requirements of law, all confidential, trade
secret or proprietary information (other than any such information relating
solely to the business or affairs of such party) concerning the other party
(except to the extent that such information can be shown to have been (i) in the
public domain through no fault of such party, (ii) later lawfully acquired on a
non-confidential basis from other sources by the party to which it was
furnished, and without breach of any obligation or duty by a third-party
concerning confidentiality, (iii) independently generated without reference to
any proprietary or confidential information of the other party, or (iv)
information that may be disclosed pursuant to any Ancillary Agreement). No party
shall release or disclose any such information to any other person, except its
auditors, attorneys, financial advisors, bankers and other consultants and
advisors who shall be advised of and agree to comply with the provisions of this
Section 6.5.

     6.6 PROTECTIVE ARRANGEMENTs. If any party hereto (or any of its
subsidiaries) either (a) determines on the advice of its counsel that it is
required to disclose any information pursuant to applicable law (including but
not limited to disclosure required pursuant to the Code, the Securities Act or
the Exchange Act, including the disclosure of financial and other information in
filings or reports made under the Securities Act or the Exchange Act) or (b)
receives any demand under lawful process or from any Governmental Authority, to
disclose or provide information of any other party hereto (or any of its
subsidiaries) that is subject to the confidentiality provisions hereof, such
party shall (except with respect to filings in reports under the Exchange Act
that require such disclosure) notify the other party prior to disclosing or
providing such information and shall cooperate at the expense of the requesting
party in seeking any reasonable protective arrangements requested by such other
party. Subject to the foregoing, the Person that received such request may
thereafter disclose or provide information to the extent required by such law
(as so advised by counsel) or by lawful process or such Governmental Authority.

     6.7 MAIL. After the Closing Date, each of HNC, Retek and RIS may receive
mail, telegrams, packages and other communications properly belonging to the
other. Accordingly, at all times after the Closing Date, each of HNC, Retek and
RIS authorizes the other to receive and open all mail, telegrams, packages and
other communications received by it and not unambiguously



<PAGE>   32

addressed to or intended for the other party or any of the other party's
officers or directors specifically in their capacities as such, and to retain
the same to the extent that they relate to the business of the receiving party
or, to the extent that they do not relate to the business of the receiving party
and do relate to the business of the other party, or to the extent that they
relate to both businesses, the receiving party shall promptly contact the other
party by telephone for delivery instructions and such mail, telegrams, packages
or other communications (or, in case the same relate to both businesses, copies
thereof) shall promptly be forwarded to the other party in accordance with its
delivery instructions. If any party receives mail, telegrams, packages and other
communications belonging to another party and unambiguously addressed to or
intended for such other party, then the party who receives such material shall
promptly contact the other party by telephone for delivery instructions and such
mail, telegrams, packages or other communications shall promptly be forwarded to
the other party in accordance with its delivery instructions. The foregoing
provisions of this Section 6.7 shall constitute full authorization to the postal
authorities, all telegraph and courier companies and all other persons to make
deliveries to HNC, Retek or RIS, as the case may be, addressed to either of them
or to any of their officers or directors specifically in their capacities as
such. The provisions of this Section 6.7 are not intended to and shall not be
deemed to constitute an authorization by either HNC, Retek or RIS to permit any
of the other to accept service of process on its behalf, and no party is or
shall be deemed to be the agent of the other for service of process purposes or
for any other purpose.

     6.8 RETENTION OF RECORDS. Except as otherwise required by law or agreed to
in writing, each party shall, and shall cause each of its respective
subsidiaries to, retain all information relating to the other party's business
in accordance with such party's written record retention policy or, if no such
policy exists, the past practice of such party. Notwithstanding the foregoing
and except as provided in any Ancillary Agreement, any party may destroy or
otherwise dispose of any such information at any time upon not less than thirty
(30) days prior written notice to the other party, specifying the information
proposed to be destroyed or disposed of; provided, however, that if the
recipient of such notice shall request in writing prior to the scheduled date
for such destruction or disposal that any of the information proposed to be
destroyed or disposed of be delivered to such requesting party, the party
proposing the destruction or disposal shall promptly arrange for the delivery of
such information as was requested at the expense of the requesting party. Except
as provided in the Tax Sharing Agreement or otherwise required by law or agreed
to in writing, either party shall have the right to destroy or otherwise dispose
of any such information at any time after the second anniversary of the
Effective Date.

                                   ARTICLE VII

                               DISPUTE RESOLUTION

     7.1 PROCEDURE. The parties shall attempt in good faith to resolve any
dispute arising out of or relating to this Agreement and shall attempt in good
faith to negotiate a settlement of any dispute arising under this Agreement
pursuant to the following process:

          (a) Any party having a dispute or claim shall give the other party
written notice stating the nature of the dispute in reasonable detail. Within
twenty (20) business days after delivery of the notice, the receiving party
shall submit to the other a written response also in reasonable detail. Within
five (5) business days after delivery of the written response the Chief




<PAGE>   33

Financial Officers (or other individual who has authority to settle the
controversy and who has direct responsibility for administration of the
relationships established pursuant to this Agreement) for each affected party
shall meet (in person or by telephone) at a mutually acceptable time and place
(including telephonic conference), and thereafter as often as they reasonably
deem necessary, to attempt to resolve the dispute. All reasonable requests for
information made by one party to the other shall be honored.

          (b) If such matter has not been resolved within twenty (20) business
days of the referral of the dispute to the Chief Financial Officers, then the
parties may pursue litigation or, if mutually agreed, alternative dispute
resolution mechanisms; provided that a party may earlier pursue litigation if
reasonably necessary to prevent or enjoin any breach of this Agreement for which
money damages would be an inadequate remedy, or that would alter the status quo
or result in injury to such party that cannot readily be compensated for in
money damages.

     7.2 SCOPE OF SECTION 7.1. The provisions of Section 7.1 shall apply only to
disputes arising under this Agreement (and not to disputes arising under any
Ancillary Agreement).

                                  ARTICLE VIII

                                  MISCELLANEOUS

     8.1 TERMINATION. This Agreement may be terminated and the Separation and
the Initial Public Offering may be deferred, modified or abandoned at any time
prior to the Closing Date by, and in the sole and absolute discretion of, the
Board of Directors of HNC without the need for any approval or consent of Retek
or RIS. In the event of such termination, no party hereto (or any of its
respective directors or officers) shall have any liability to any other party
pursuant to this Agreement and the Initial Public Offering shall be discontinued
and terminated.

     8.2. EXPENSES. Except for the fees and disbursements related to HNC's
counsel, accountants and other advisors, Retek shall pay or cause to be paid all
third party expenses relating to the Initial Public Offering or any other
primary offering by Retek prior to a Distribution, including (i) the
preparation, printing and filing of the Registration Statement (including
financial statements and exhibits) as originally filed and of each amendment
thereto or any other registration statements, (ii) the preparation, printing and
delivery to any underwriters of any underwriting agreement, any agreement among
underwriters and any other documents as may be required in connection with the
offering, purchase, sale, issuance or delivery of the Retek Common Stock or any
other securities of Retek, (iii) the preparation, issuance and delivery of the
certificates for the Retek Common Stock or any other securities of Retek to any
underwriters or any other purchasers, including any stock or other transfer
taxes and any stamp or other duties payable upon the sale, issuance or delivery
of the Retek Common Stock or any other securities of Retek to any underwriters
or any other securities, (iv) the qualification of the Retek Common Stock or any
other securities of Retek under the securities laws in accordance with any state
(Blue Sky laws), including filing fees and the reasonable fees and disbursements
of counsel for any underwriters in connection therewith and in connection with
the preparation of the Blue Sky Survey and any supplement thereto, (v) the
printing and delivery to any underwriters of copies of each preliminary
prospectus, any term sheets and of the final prospectus and any amendments or
supplements thereto, (vi) the preparation, printing and delivery to any
underwriters of copies of




<PAGE>   34

the Blue Sky Survey and any supplement thereto, (vii) the fees and expenses of
any transfer agent or registrar for the Retek Common Stock or any other
securities of Retek, (viii) the filing fees incident to, and the reasonable fees
and disbursements of counsel to any underwriters in connection with, the review
by the National Association of Securities Dealers, Inc. of the terms of the sale
of the Retek Common Stock or any other securities of Retek and (ix) the fees and
expenses incurred in connection with the listing of the Retek Common Stock or
any other securities of Retek on the Nasdaq Stock Market, any national
securities exchange or any national over the counter quotation system.

     8.3 NOTICES. All notices and communications under this Agreement shall be
in writing and any communication or delivery hereunder shall be deemed to have
been duly given when received addressed as follows:

                  If to HNC, to:

                           HNC Software Inc.
                           5935 Cornerstone Court West
                           San Diego, California 92121
                           Attn: Chief Financial Officer
                           Telecopy Number:  (858) 452-3220


                  If to Retek, to:

                           Retek Inc.
                           Midwest Plaza
                           801 Nicollet Mall, 11th Floor
                           Minneapolis, MN 55402
                           Attn:  President
                           Telecopy Number:  (612) 630-5641

                  If to RIS, to:

                           c/o Retek Inc.
                           Midwest Plaza
                           801 Nicollet Mall, 11th Floor
                           Minneapolis, MN 55402
                           Attn:  President
                           Telecopy Number:  (612) 630-5641

         Any party may, by written notice so delivered to the other party,
change the address to which delivery of any notice shall thereafter be made.

     8.4. AMENDMENT AND WAIVER. This Agreement may not be altered or amended,
nor may rights hereunder be waived, except by an instrument in writing executed
by the party or parties to be charged with such amendment or waiver. No waiver
of any terms, provision or condition of or failure to exercise or delay in
exercising any rights or remedies under this Agreement, in any one




<PAGE>   35

or more instances shall be deemed to be, or construed as, a further or
continuing waiver of any such term, provision, condition, right or remedy or as
a waiver of any other term, provision or condition of this Agreement.

     8.5 COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be deemed an original instrument, but all of
which together shall constitute but one and the same Agreement. This Agreement
will become binding when one or more counterparts hereof, individually or taken
together, will bear the signatures of all the parties reflected hereon as
signatories.

     8.6 GOVERNING LAW; JURISDICTION; FORUM. This Agreement shall be construed
in accordance with, and governed by, the internal laws of the State of
California, without regard to the conflicts of law rules of such state. Each
party hereto expressly submits and consents in advance to the non-exclusive
jurisdiction of the State and Federal courts sitting in the City of San Diego,
State of California, in any Action between the parties arising under this
Agreement or under any Ancillary Agreement, and hereby waives any claim that any
such state or federal court is an inconvenient or forum or improper venue.

     8.7 ENTIRE AGREEMENT. This Agreement including the schedules and exhibits
hereto, together with the Ancillary Agreements, constitute the entire agreement
and understanding of the parties hereto with respect to the subject matter
hereof, superseding all negotiations, prior discussions and prior agreements and
understandings relating to such subject matter. To the extent that the
provisions of this Agreement are inconsistent with the provisions of any
Ancillary Agreements, the provisions of such Ancillary Agreement shall prevail.

     8.8 PARTIES IN INTEREST. None of the parties hereto may assign its rights
or delegate any of its duties under this Agreement without the prior written
consent of each other party; provided, however, that the rights and obligations
of HNC may be assigned, without the consent of Retek or RIS, pursuant to a
merger, exchange, recapitalization or other reorganization to which HNC is a
party or by operation of law. This Agreement shall be binding upon, and shall
inure to the benefit of, the parties hereto and their respective successors and
permitted assigns. Nothing contained in this Agreement, express or implied, is
intended to confer any benefits, rights or remedies upon any person or entity
other than HNC and Retek, and HNC Indemnitees and Retek Indemnitees under
Article IV hereof.

     8.9 FURTHER ASSURANCES AND CONSENTS. Subject to HNC's rights of termination
under Section 8.1, in addition to the actions specifically provided for
elsewhere in this Agreement, each of the parties hereto will use its reasonable
efforts to (i) execute and deliver such further instruments and documents and
take such other actions as any other party may reasonably request in order to
effectuate the purposes of this Agreement and to carry out the terms hereof and
(ii) take, or cause to be taken, all actions, and to do, or cause to be done,
all things, reasonably necessary, proper or advisable under applicable laws,
regulations and agreements or otherwise to consummate and make effective the
transactions contemplated by this Agreement, including, without limitation,
using its reasonable efforts to obtain any Consents and to make any filings and
applications necessary or desirable in order to consummate the transactions
contemplated by this Agreement; provided that no party hereto shall be obligated
to pay any consideration therefor (except for filing fees and other similar
charges) to any third party from




<PAGE>   36

whom such Consents and amendments are requested or to take any action or omit to
take any action if the taking of or the omission to take such action would be
unreasonably burdensome to the party or its business.

     8.10 EXHIBITS AND SCHEDULES. The Exhibits and Schedules shall be construed
with and as an integral part of this Agreement to the same extent as if the same
had been set forth verbatim herein.

     8.11 LEGAL ENFORCEABILITY. Any provision of this Agreement which is
prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction,
be ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof. Any such prohibition or
enforceability in any jurisdiction shall not invalidate or render unenforceable
such provision in any other jurisdiction. Without prejudice to any rights or
remedies otherwise available to any party hereto, each party hereto acknowledges
that damages would be an inadequate remedy for any breach of the provisions of
this Agreement and agrees that the obligations of the parties hereunder shall be
specifically enforceable.

     8.12 TITLES AND HEADINGS. Titles and headings to Sections herein are
inserted for convenience of reference only and are not intended to be a part of
or to affect the meaning or interpretation of this Agreement.


         [THE REMAINDER OF THIS PAGE HAS INTENTIONALLY BEEN LEFT BLANK]


<PAGE>   37


         IN WITNESS WHEREOF, the parties hereto have duly executed and delivered
this Agreement on the day and year first above written.

                                       HNC Software Inc.


                                       By /s/ R. V. Thomas
                                          --------------------------------------

                                       Name: R. V. Thomas
                                            ------------------------------------

                                       Title: CFO
                                             -----------------------------------

                                       RETEK INC.


                                       By: /s/ Gregory A. Effertz
                                          --------------------------------------

                                       Name: Gregory A. Effertz
                                            ------------------------------------

                                       Title: VP, Finance and Administration
                                             -----------------------------------

                                       RETEK INFORMATION SYSTEMS, INC.


                                       By: /s/ Gregory A. Effertz
                                          --------------------------------------

                                       Name: Gregory A. Effertz
                                            ------------------------------------

                                       Title: VP, Finance and Administration
                                             -----------------------------------




Attachment:

List of Exhibits
List of Schedules


                    [SIGNATURE PAGE TO SEPARATION AGREEMENT]



<PAGE>   38








                                LIST OF EXHIBITS





Exhibit 1     -     Corporate Rights Agreement

Exhibit 2     -     License Agreement

Exhibit 3     -     Services Agreement

Exhibit 4     -     Stock Contribution Agreement

Exhibit 5     -     Tax Sharing Agreement

Exhibit 6     -     Letter Agreement







<PAGE>   39



                                LIST OF SCHEDULES





Schedule 1.1(a)     -     Retek Contracts

Schedule 2.6        -     Retek Intercompany Payables and Receivables

Schedule 3.1(k)     -     Covered Claims

<PAGE>   40


                                SCHEDULE 1.1(a)
                                       TO
                              SEPARATION AGREEMENT

                                RETEK CONTRACTS



                     None. There are no "Retek Contracts".
<PAGE>   41

                                  SCHEDULE 2.6
                                       TO
                              SEPARATION AGREEMENT
     AMONG HNC SOFTWARE INC., RETEK INC. AND RETEK INFORMATION SYSTEMS, INC.


     HNC, Retek and RIS hereby agree that, to the extent that this Schedule 2.6
is inconsistent or in conflict with the provisions of Section 2.6 ("Settlement
and Offset of Intercompany Accounts") of this Separation Agreement ("SECTION
2.6"), the provisions and agreements set forth in this Schedule 2.6 shall
govern, control and supersede.

     Notwithstanding the provisions of Section 2.6, the parties hereby agree
that:

     1)   As of November 23, 1999, the Effective Date of this Agreement, the
Retek Intercompany Payables exceed the Retek Intercompany Receivables. The
parties also acknowledge and agree that it is difficult to complete a final
computation of such amounts by November 23, 1999.

     2)   Based on its good faith review of its accounting records, HNC
estimates that the Net Retek Closing Payable as of the Closing Date of November
23, 1999 is $9,505,000 (the "ESTIMATED RETEK PAYABLE").

     3)   Retek agrees to pay HNC the full amount of the Estimated Retek Payable
by no later than the second (2nd) business day after the Closing in accordance
with the provisions of Section 3.3(o) of this Separation Agreement.

     4)   HNC agrees that, by December 31, 1999, it will complete a final
determination of the Retek Intercompany Payables and the Retek Intercompany
Receivables as of November 23, 1999, and the actual Net Retek Closing Payable as
of November 23, 1999 (the "ACTUAL RETEK PAYABLE") and will provide Retek a
written notice of HNC's determination of each of such amounts (the
"DETERMINATION NOTICE") by no later than January 7, 1999.

     5)   The parties agree that:

          (a) if the Actual Retek Payable is greater than the Estimated Retek
     Payable, then Retek shall pay to HNC, within five (5) business days after
     HNC sends the Determination Notice to Retek, the amount by which the Actual
     Retek Payable (as set forth in the Determination Notice) exceeds the
     Estimated Retek Payable previously paid by Retek to HNC; and

          (b) if the Actual Retek Payable (as set forth in the Determination
     Notice) is less than the Estimated Retek Payable, then HNC shall pay to
     Retek, within five (5) business days after HNC has finally determined the
     Actual Retek

<PAGE>   42

     Payable, but in no event later than January 10, 1999, the amount by which
     the amount of the Estimated Retek Payable previously paid by Retek to HNC
     exceeds the Actual Retek Payable.

          6) The parties also agree that, notwithstanding the provisions of
     Section 2.6, no party shall be required to deliver an Intercompany Accounts
     Certificate at the Closing or at any other time.


HNC SOFTWARE INC.                        RETEK INC.

By: /s/ R.V. Thomas                      By: /s/ Gregory A. Effertz
   -------------------------------         -----------------------------------
Title:  CFO                              Title: VP, Finance and Administration
       ---------------------------             -------------------------------

                                         RETEK INFORMATION SYSTEMS, INC.

                                         By: /s/ Gregory A. Effertz
                                            ----------------------------------
                                         Title: VP, Finance and Administration
                                               -------------------------------

<PAGE>   43





                                 SCHEDULE 3.1(K)
                                       TO
                              SEPARATION AGREEMENT

                                 COVERED CLAIMS


The Covered Claims, if and to the extent they may be covered by any of the
Policies, are as follows:

1.       JDA vs. Retek - an employment issue, Retek hired JDA employees
2.       Wim Ooms vs. Retek - an employee claim in the Netherlands
3.       Jens Munk vs. Retek - an employee claim in Germany
4.       Alan Ranson vs. Retek - an employee claim in South Africa
5.       Scott Bieler vs. Retek - an employee claim in the United States
6.       Kurt Waltenbaugh vs. Retek - an employee claim in the United States
7.       Jeff Goke vs. Retek - an employee claim in the United States


Nothing in this schedule is an admission of any liability or obligation on the
part of HNC, Retek or RIS, or any of their respective directors, officers,
employees, agents or stockholders, nor is HNC making any representation,
warranty or agreement that any of the Covered Claims is covered under any of the
Policies.