Document:

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                                                                   EXHIBIT 10.05

                                UNICA CORPORATION

                             STOCK OPTION AGREEMENT

1.       Grant of Option. Unica Corporation, a Massachusetts corporation (the
         "Company"), hereby grants to _______________ (the "Optionee"), an
         option, pursuant to the Company's Amended and Restated 1993 Stock
         Option Plan (the "Plan"), to purchase an aggregate of __________ shares
         of Common Stock, par value $.01 per share ("Common Stock"), of the
         Company at a price of $_____ per share, purchasable as set forth in and
         subject to the terms and conditions of this Agreement and the Plan.

2.       Exercise of Option and Provisions for Termination.

         a)       Vesting Schedule. Except as otherwise provided in this
                  Agreement, this option may be exercised prior to the _____
                  anniversary date of the date of grant (hereinafter the
                  "Expiration Date"), on a cumulative basis as described below,
                  in installments as to not more than the number of shares and
                  during the respective installment periods set forth below:

<TABLE>
<CAPTION>
                     Total Number of Shares
Exercise Period            Exercisable
---------------            -----------
<S>                  <C>
</TABLE>

                  The right of exercise shall be cumulative so that if the
                  option is not exercised to the maximum extent permissible
                  during any exercise period it shall be exercisable, in whole
                  or in part, with respect to all shares not so purchased, at
                  any time prior to the Expiration Date or the earlier
                  termination of this option. This option may not be exercised
                  at any time after the Expiration Date.

         b)       Exercise Procedure. Subject to the conditions set forth in the
                  Agreement, this option shall be exercised by the Optionee's
                  delivery of written notice of exercise to the Treasurer of the
                  Company, specifying the number of shares to be purchased and
                  the purchase price to be paid therefore and accompanied by
                  payment in full in accordance with Section 3. Such exercise
                  shall be effective upon receipt by the Treasurer of the
                  Company of such written notice together with the required
                  payment. The Optionee may purchase less than the number of
                  shares covered hereby, provided that no partial exercise of
                  this option may be for any fractional share. In connection
                  with any such exercise, the Company may require Optionee to
                  make an election pursuant to Section 83(b) of the Internal
                  Revenue Code.

                                   Page 1 of 9

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         c)       Continuous Service Required. Except as otherwise provided in
                  this Section 2, this option may not be exercised unless ninety
                  (90) days prior to exercising this option, the Optionee was
                  and has been at all times since that date of grant of this
                  option, a consultant, director, adviser or employee of the
                  Company.

         d)       Exercise Period Upon Death or Disability. If the Optionee dies
                  or becomes disabled (within the meaning of Section 22(e)(3) of
                  the Code) prior to the Expiration Date, while he or she is a
                  consultant, adviser, director and/or employee of the Company
                  this option shall be exercisable, within the period of one
                  year following the date of death or disability of the Optionee
                  (but in no event after the Expiration Date) by the Optionee or
                  by the person to whom this option is transferred by will or
                  the laws of descent and distribution, provided that this
                  option shall be exercisable by the Optionee only to the extent
                  it was exercisable on the date of his or her death or
                  disability. Except as otherwise indicated by the context, the
                  term "Optionee", as used in this option, shall be deemed to
                  include the estate of the Optionee, or any person who acquires
                  the right to exercise this option by bequest or inheritance or
                  otherwise by reason of the death of the Optionee.

3. Payment of Purchase Price.

         a)       Method of Payment. Payment of the purchase price for shares
                  purchased upon exercise of this option shall be made by
                  delivery to the Company of cash or a check to the order of the
                  Company in an amount equal to the purchase price of such
                  shares, or, if approved by Company in its sole discretion, by
                  delivery to the Company of shares of Common Stock of the
                  Company then owned by the Optionee having a fair market value
                  equal in amount to the purchase price of such shares, or by
                  any combination of such methods of payment.

         b)       Valuation of Shares Tendered in Payment of Purchase Price. For
                  the purposes hereof, the fair market value of any share of the
                  Company's Common Stock which may be delivered to the Company
                  in exercise of this option shall be determined in good faith
                  by the Board of Directors of the Company. The Company shall
                  promptly notify the Optionee of the Board's determination of
                  fair market value and the Optionee shall notify the Company
                  within ten (10) days whether he accepts such valuation, in
                  which case such valuation shall be the "Fair Market Value"
                  hereunder, or chooses to invoke the appraisal process set
                  forth in this Section 3(b). During the ten (10) day period
                  following the Optionee's notice, each of the Company and the
                  Optionee shall choose an appraiser and the two appraisers
                  shall select a third appraiser, or if they are unable to agree
                  on a third appraiser, then the appraisers shall request the
                  American Arbitration Association to appoint a qualified
                  appraiser, and the appointment by the American Arbitration
                  Association shall be binding on the parties. All appraisers
                  selected hereunder shall be disinterested parties who are
                  experienced in the appraisal of closely held businesses and
                  businesses engaged in activities similar to those conducted by
                  the

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                  Company. The appraisers shall value the Company as a going
                  concern. The appraisers shall be directed to issue a written
                  report describing the method of valuation in reasonable
                  detail, and to produce such valuation in thirty (30) days from
                  the date on which he or she obtains from the Company what he
                  or she deems to be sufficient data from which to make the
                  appraisal, but in no event later than forty-five (45) days
                  after the appointment of the appraisers, unless a longer
                  period is agreed to in writing by the Company and the
                  Optionee. The average of the two closest appraised values
                  shall be the "Fair Market Value" per share which shall be
                  conclusive and binding on the parties. The costs of the
                  appraisal shall be borne equally by the parties unless the
                  Company's initial determination of fair market value is less
                  than the appraised fair market value by ten (10%) percent or
                  more, in which case, the Company shall bear the costs of the
                  appraisal.

         c)       Delivery of Shares Tendered in Payment of Purchase Price. If
                  the Company permits the Optionee to exercise options by
                  delivery of shares of Common Stock of the Company, the
                  certificate or certificates representing the shares of Common
                  Stock of the Company to be delivered shall be duly executed in
                  blank by the Optionee or shall be accompanied by a stock power
                  duly executed in blank suitable for purposes of transferring
                  such shares to the Company. Fractional shares of Common Stock
                  of the Company will not be accepted in payment of the purchase
                  price of shares acquired upon exercise of this option.

4.       Delivery of Shares. The Company shall, upon payment of the option price
         for the number of shares purchased and paid for, make prompt delivery
         of such shares to the Optionee, provided that if any law or regulation
         requires the Company to take any action with respect to such shares
         before the issuance thereof, then the date of delivery of such shares
         shall be extended for the period necessary to complete such action. No
         shares shall be issued and delivered upon the exercise of any option
         unless and until, in the opinion of counsel for the Company, any
         applicable registration requirements of the Securities Act of 1933, any
         applicable listing requirements of any national securities exchange on
         which stock of the same class is then listed, and any other
         requirements of law or of any regulatory bodies having jurisdiction
         over such issuance and delivery, shall have been fully complied with.

5.       Non-transferability of Option. Except as provided in paragraph (d) of
         section 2, this option is personal and no rights granted hereunder may
         be transferred, assigned, pledged or hypothecated in any way (whether
         by operation of law or otherwise) nor shall any such rights be subject
         to execution, attachment or similar process.

6.       No Special Rights. Nothing contained in the Plan or this option shall
         be construed or deemed by any person under any circumstances to bind
         the Company to continue its relationship with the Optionee for the
         period within which this option may be exercised.

7.       Rights as a Stockholder. The Optionee shall have no rights as a
         stockholder with respect to any shares which may be purchased by
         exercise of this option unless and until such

                                   Page 3 of 9

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         option is properly exercised in accordance with section 2(b). Except as
         otherwise expressly provided in the Plan, no adjustment shall be made
         for dividends or other rights until such option is properly exercised.

8.       Stockholders Agreement. The Optionee agrees that upon the exercise of
         this option, the Optionee will enter into a certain Stockholders
         Agreement dated as of November 24, 1999 by and among the Company and
         the other parties named therein, as the same may be amended (the
         "Stockholders Agreement"), by executing a Joinder Agreement in
         substantially the form attached thereto. Notwithstanding anything to
         the contrary, the rights of the Company set forth under Section 9 of
         this Agreement shall take precedence over any rights set forth in
         Section 2 of the Stockholders Agreement. A copy of the Stockholders
         Agreement will be provided to the Optionee at the time this option is
         exercised or, at the request of the Optionee, prior to such exercise.

9.       Restrictions on Transfer. The Optionee or his respective agent,
         representative, executor, administrator or other legal representative
         shall not Transfer any of the shares of Common Stock of the Company
         resulting from the exercise of this option ("Shares"), except as
         specifically provided in this Section 9. These restrictions shall apply
         to any new, additional or different securities the Optionee may become
         entitled to receive with respect to such Shares by virtue of a stock
         split or stock dividend or any other change in the corporate or capital
         structure of the Company. For purposes of this Agreement, "Transfer"
         shall mean any voluntary or involuntary disposition including but not
         limited to any sale, exchange, assignment, pledge or grant of a
         security interest.

         a)       Company's Right of First Refusal. If at any time during the
                  period when the Optionee is serving as a consultant, adviser,
                  director or an employee of the Company desires to sell any of
                  the Shares pursuant to a bona fide third party offer, then the
                  Optionee shall first offer those Shares to the Company by
                  delivering written notice to the Treasurer of the Company,
                  informing the Company of his intent to sell, which notice
                  shall be accompanied by a copy of the offer received and the
                  name and address of the offeror. The Company shall have the
                  right to purchase any or all of such Shares at the lesser of
                  the price per share contained in such third party offer or the
                  Fair Market Value per share. In the event that the Company has
                  not exercised its purchase option within thirty (30) days
                  after its receipt of the Optionee's notice of intent to sell
                  by sending written notice of its intention to purchase some or
                  all of such Shares to the Optionee, then the Optionee may sell
                  such Shares to such third party, provided, however, that such
                  sale may be made only if it is made strictly in accordance
                  with the terms of the bona fide third party offer and further
                  provided that it is completed within thirty (30) days after
                  the expiration of the Company's purchase option. If such sale
                  is not so completed in accordance with the terms of the
                  preceding sentence, then the Shares shall again become subject
                  to all of the terms of this paragraph. As a condition
                  precedent to the validity and completion of any such sale to a
                  third party, the purchaser shall be required to execute a
                  stockholders agreement containing such restrictions on
                  transfer and required resale provisions as are

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                  contained in this Section 9, including the repurchase option
                  in favor of the Company.

         b) Company's Right of Repurchase.

                  (i)      Right of Repurchase. The Company shall have the
                           assignable right (the "Repurchase Right") to
                           repurchase all of the Shares held by the Optionee (or
                           his legal representative), upon the occurrence of any
                           of the events specified in Section 9(b)(ii) below
                           (the "Repurchase Event"). The Repurchase Right may be
                           exercised by the Company for a period of ninety (90)
                           days after the date the Company receives notice of or
                           otherwise becomes aware of such event (the
                           "Repurchase Period") at a price per share equal to
                           (i) in the case of an event specified in Section
                           9(b)(ii)(A) or (B) below, the greater of the Fair
                           Market Value and the average purchase price paid for
                           such Shares by the Optionee, and (ii) in the case of
                           an event specified in Section 9(b)(ii)(C), the
                           greater of fifty (50%) percent of the Fair Market
                           Value and the average purchase price paid for such
                           Shares by the Optionee.

                  (ii)     Company's Right to Exercise Repurchase Right. The
                           Company or its assignee shall have the Repurchase
                           Right in the event that any of the following events
                           shall occur:

                                    (A)     The Optionee is or becomes
                                            Financially Impaired (as defined in
                                            Section 9(d) hereof);

                                    (B)     Within one (1) year after the
                                            Optionee ceases to serve the Company
                                            in the capacity of a consultant,
                                            advisor, director or employee, the
                                            Optionee provides such services to
                                            any entity which competes directly
                                            with the business being conducted by
                                            the Company at the time the Optionee
                                            ceases providing such services to
                                            the Company; or

                                    (C)     The termination of the Optionee with
                                            respect to his service to the
                                            Company as a consultant, adviser,
                                            director or employee, as the case
                                            may be, for Cause, (as defined in
                                            Section 9(e) hereof).

         c)       Determination of Fair Market Value. At the time the Company
                  elects to exercise its right to purchase shares, the Company
                  shall promptly notify the Optionee of the Board's
                  determination of fair market value. The Optionee may then
                  choose to invoke the additional arbitration and notice
                  provisions as set forth in Section 3(b) contained herein. In
                  the case of any Shares purchased by the Optionee (or his legal
                  representative) pursuant to Section 2(d) hereof during the
                  relevant one (1) year period, the rights granted to the
                  Company hereunder shall, with respect to

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                  such Shares, run for the 180 day period beginning on the date
                  such Shares are purchased.

         d)       Definition of Financially Impaired. "Financially Impaired"
                  means (i) the filing of a voluntary or involuntary proceeding
                  in bankruptcy or receivership in a court of competent
                  jurisdiction or appointment of a trustee or receiver as a
                  result of a proceeding in a court of competent jurisdiction
                  and the continuance of such proceeding for a period of ninety
                  (90) days without dismissal, or (ii) the entry into any
                  arrangement, composition or reorganization for the benefit of
                  creditors.

         e)       Definition of Cause. "Cause" means (i) the Optionee's failure
                  to actively participate in the normal operations of the
                  Company's advisory board if the Optionee is a member thereof,
                  and/or failure to perform in any material respect in
                  accordance with any material provision of any consulting,
                  advising or employment agreement entered into between the
                  Optionee and the Company, which remains uncured to the
                  reasonable satisfaction of the Company within twenty (20) days
                  after the Company's delivery to the Optionee of written notice
                  of such failure, setting forth the details with reasonable
                  specificity, (ii) the Optionee's breach of any of the material
                  terms or conditions contained in any confidentiality or
                  noncompetition agreement entered into for the benefit of the
                  Company, (iii) the Optionee's gross dereliction of duty, which
                  remains uncured to the reasonable satisfaction of the Company
                  within twenty (20) days after the Company's delivery to the
                  Optionee of written notice of such dereliction, setting forth
                  the details with reasonable specificity or (iv) the Optionee's
                  commission of intentional misconduct or a knowing violation of
                  law if such act in either event results in material injury to
                  the Company. A termination of the Optionee's relationship with
                  the Company as a consultant, advisor, director or employee
                  shall be "without Cause" as follows: (i) if, at any time, the
                  Company terminates the Optionee's services as a consultant,
                  advisor, director or employee for any reason other than those
                  specified in the definition of "Cause" above, or (ii) if the
                  Optionee resigned his duties as a consultant, advisor,
                  director or employee, because the Company requires the
                  Optionee to relocate more than 100 miles from the office from
                  which the Optionee is required to perform the majority of
                  his/her employment responsibilities immediately prior to
                  his/her resignation, or (iii) the Optionee's resignation.

         f)       Payment for Shares. The payment for Shares purchased hereunder
                  by the Company from the Optionee shall be made either in cash
                  or by a promissory note, in a form reasonably acceptable to
                  the Optionee, providing for payment over a period of not
                  greater than five years and containing an interest rate equal
                  to the Base Rate charged by BankBoston N.A. Any purchase of
                  Shares by the Company shall take place at a "Closing" to be
                  held as soon as practicable, but no later than thirty (30)
                  days after the date the Company notifies the Optionee that it
                  is exercising its right under paragraph (a) or (b) above, as
                  the case may be. At the Closing, the Optionee (or his legal
                  representative) shall deliver to the Company

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                  certificates for the Shares to be purchased, duly endorsed in
                  blank and the Company shall make payment for such Shares as
                  provided above.

         g)       Legend. All Shares shall be endorsed with the following legend
                  at the time of issuance:

                  "This certificate and the shares represented hereby are
                  subject to restrictions on transfer as set forth in a certain
                  Stock Option Agreement. No sale, transfer, assignment or other
                  disposition of this certificate or the shares represented
                  hereby shall be valid unless made in accordance with the terms
                  and conditions of such Agreement, a copy of which is on file
                  and is available for examination at the principal office of
                  the Company."

         h)       Expiration of Restrictions on Transfer. The restrictions
                  contained in this Section 9 shall terminate at the time of
                  either (i) a distribution to the public of shares of Common
                  Stock of the Company pursuant to an effective registration
                  statement filed under the Securities Act of 1933, as amended,
                  or any successor statute in an amount exceeding $2 million
                  dollars, (ii) a vote of the stockholders of the Company
                  approving the transfer or sale of all, or substantially all,
                  of the assets of the Company to another entity or a merger or
                  consolidation of the Company with another entity where such
                  entity is the surviving entity or (iii) the transfer of more
                  than 50% of the outstanding voting stock of the Company in a
                  single transaction or related series of transactions.

10.      Recapitalization. In the event that the outstanding shares of Common
         Stock of the Company are changed into or exchanged for a different
         number or kind of shares or other securities of the Company by reason
         of any recapitalization, reclassification, stock split, stock dividend,
         combination or subdivision, appropriate adjustment shall be made in the
         number and kind of shares to which this option shall be exercisable.
         Such adjustment to this option shall be made without change in the
         total price applicable to the unexercised portion of this option, and a
         corresponding adjustment in the option price per share shall be made.

11.      Reorganization. In case the Company is merged or consolidated with
         another corporation and the Company is not the surviving corporation
         (other than any merger or consolidation in which the holders of the
         capital stock of the Company immediately prior to such transaction
         entitled to vote for the election of directors hold a majority of the
         capital stock entitled to vote for the election of directors of the
         surviving or resulting corporation or other entity), or in case all or
         substantially all of the assets or more than fifty percent (50%) of the
         outstanding voting stock of the Company is acquired by any other
         corporation, person or entity, or in case of a liquidation of the
         Company (each a "Reorganization Event"), then, prior to the Expiration
         Date or termination of this option, and within twelve (12) months
         following such Reorganization Event, if the Optionee is terminated
         without Cause, as defined in Section 9(e), or the Optionee resigns
         his/her position for Good Reason, as defined in this Section 11 below,
         then all installments of

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<PAGE>

         this option set forth in Section 2 which would have become vested and
         exercisable within the twelve (12) months following such Reorganization
         Event shall become immediately vested and exercisable. For the purposes
         of this Section 11 only, "Good Reason" shall mean (i) a requirement of
         the Optionee to relocate more than 100 miles from the office from which
         the Optionee is required to perform the majority of his/her employment
         responsibilities immediately prior to the Reorganization Event, or (ii)
         a reduction in base salary (exclusive of bonuses and/or commissions,
         vacation pay, leave pay, 401k contributions, stock options, insurance
         benefits, fringe benefits or any other employee benefit).

12.      Withholding Taxes. The Company's obligation to deliver Shares shall be
         subject to the Optionee's satisfaction of all applicable contractual or
         legal tax obligations, including without limitation, federal, state and
         local income and employment tax withholding requirements.

13.      Investment Representations.

         The Optionee represents, warrants and covenants that:

         a)       Any Shares purchased hereunder shall be acquired for the
                  Optionee's account for investment only, and not with a view
                  to, or for sale in connection with, any distribution of the
                  shares in violation of any laws or regulations, including but
                  not limited to the Securities Act of 1933 (the "Securities
                  Act"), or any rule or regulation under the Securities Act.

         b)       The Optionee has had such opportunity as he or she has deemed
                  adequate to obtain from representatives of the Company such
                  information as is necessary to permit the Optionee to evaluate
                  the merits and risks of his or her investment in the Company.

         c)       The Optionee is able to bear the economic risk of holding the
                  Shares for any required holding periods.

14.      Miscellaneous.

         a)       Except as provided herein, this option may not be amended or
                  otherwise modified unless evidenced in writing and signed by
                  the Company and the Optionee.

         b)       Any notices or other communications required or permitted
                  hereunder shall be sufficiently given if delivered personally
                  or sent by Federal Express or similar overnight courier or by
                  registered or certified mail, postage prepaid, addressed in
                  any event to the parties at their respective addresses set
                  forth beneath their names below, or to such other address of
                  which the parties have given notice in accordance with this
                  Section 14(b). Such notices or other communications shall be
                  deemed received (i) on the date delivered, if delivered
                  personally, (ii) three (3)

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                  business days after being deposited with the U.S. Post Office,
                  if sent by registered or certified mail, unless the receipt
                  for delivery states a different date or (iii) on the next
                  business day, if sent by Federal Express or similar overnight
                  courier, unless the receipt for delivery states a different
                  date.

         c)       This option shall be governed by and construed in accordance
                  with the laws of the Commonwealth of Massachusetts, USA.

         d)       By acceptance of this option the Optionee agrees to the terms
                  and conditions hereof.

         e)       Unica certifies and represents that the Amended and Restated
                  1993 Stock Option Plan dated May 8, 1997, as amended, is the
                  current and effective version of the Stock Option Plan.

Date of Grant:                                UNICA CORPORATION

                                              By: ______________________________
Accepted and Agreed:                          Title:
                                              Address:

________________________________
Optionee
Address

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                                                                   EXHIBIT 10.06

                                UNICA CORPORATION

                        ADVISER'S STOCK OPTION AGREEMENT

1. Grant of Option. Unica Corporation, with a principal place of business at 170
Tracer Lane, Waltham, MA 02451 (the "Company"), hereby grants to ________ (the
"Optionee"), a non-statutory option, pursuant to the Company's Amended and
Restated 1993 Stock Option Plan, as amended (the "Plan"), to purchase an
aggregate of ______ shares of Common Stock, par value $.01 per share ("Common
Stock"), of the Company at a price of ______ per share, purchasable as set forth
in and subject to the terms and conditions of this Agreement and the Plan.

2. Exercise of Option and Provisions for Termination.

         a)       Vesting Schedule. Except as otherwise provided in this
                  Agreement, this option may be exercised prior to the tenth
                  (10th) anniversary date of the date of grant (hereinafter the
                  "Expiration Date"), on a cumulative basis as described below,
                  in installments as to not more than the number of shares and
                  during the respective installment periods set forth below, if
                  the Optionee continues to serve the Company or any of its
                  subsidiaries in the capacity of a consultant, advisor,
                  director or employee (such service is described herein as
                  maintaining or being involved in a "Business Relationship"
                  with the Company).

<TABLE>
<CAPTION>
                         Total Number of
Exercise Period        Shares Exercisable
---------------        ------------------
<S>                    <C>
</TABLE>

                  The right of exercise shall be cumulative so that if the
                  option is not exercised to the maximum extent permissible
                  during any exercise period it shall be exercisable, in whole
                  or in part, with respect to all shares not so purchased, at
                  any time prior to the Expiration Date or the earlier
                  termination of this option. This option may not be exercised
                  at any time after the Expiration Date.

                  ANY AND ALL SHARES OF COMMON STOCK ACQUIRED UPON EXERCISE OF
                  THE FOREGOING OPTIONS SHALL BE SUBJECT TO THE RESTRICTIONS ON
                  TRANSFER AND COMPANY REPURCHASE RIGHTS SET FORTH IN SECTION 9
                  BELOW.

         b)       Exercise Procedure. Subject to the conditions set forth in the
                  Agreement, this option shall be exercised by the Optionee's
                  delivery of written notice of exercise to the Treasurer of the
                  Company, specifying the number of shares to be purchased and
                  the purchase price to be paid therefore and accompanied by
                  payment in full in accordance with Section 3. Such exercise
                  shall be effective upon receipt by the Treasurer of the
                  Company of such written notice together with the required
                  payment. The Optionee may purchase less than the number of
                  shares covered

<PAGE>

                                      -2-

                  hereby, provided that no partial exercise of this option may
                  be for any fractional share.

                  In connection with any such exercise, the Optionee
                  acknowledges that it may be advisable for Optionee to make an
                  election pursuant to Section 83(b) of the Internal Revenue
                  Code.

         c)       Continuous Service Required. Except as otherwise provided in
                  this Section 2, this option may not be exercised unless ninety
                  (90) days prior to exercising this option, the Optionee was
                  and has been at all times since that date of grant of this
                  option, maintaining a Business Relationship with the Company.

         d)       Exercise Period Upon Death or Disability. If the Optionee dies
                  or becomes disabled (within the meaning of Section 22(e)(3) of
                  the Code) prior to the Expiration Date, while he or she
                  maintains a Business Relationship with the Company, this
                  option shall be exercisable, within the period of one year
                  following the date of death or disability of the Optionee (but
                  in no event after the Expiration Date) by the Optionee or by
                  the person to whom this option is transferred by will or the
                  laws of descent and distribution, provided that this option
                  shall be exercisable by the Optionee only to the extent it was
                  exercisable on the date of his or her death or disability.
                  Except as otherwise indicated by the context, the term
                  "Optionee", as used in this option, shall be deemed to include
                  the estate of the Optionee, or any person who acquires the
                  right to exercise this option by request or inheritance or
                  otherwise by reason of the death of the Optionee.

3. Payment of Purchase Price.

         a)       Method of Payment. Payment of the purchase price for shares
                  purchased upon exercise of this option shall be made by
                  delivery to the Company of cash or a check to the order of the
                  Company in an amount equal to the purchase price of such
                  shares, or by delivery to the Company of shares of Common
                  Stock of the Company then owned by the Optionee having a fair
                  market value equal in amount to the purchase price of such
                  shares, or by any combination of such methods of payment.

         b)       Valuation of Shares Tendered in Payment of Purchase Price. For
                  the purposes hereof, the fair market value of any share of the
                  Company's Common Stock which may be delivered to the Company
                  in exercise of this option shall be determined in good faith
                  by the Board of Directors of the Company. The Company shall
                  promptly notify the Optionee of the Board's determination of
                  fair market value and the Optionee shall notify the Company
                  within ten (10) days whether he accepts such valuation, in
                  which case such valuation shall be the "Fair Market Value"
                  hereunder, or whether he chooses to invoke the appraisal
                  process set forth in this Section 3(b). During the ten (10)
                  day period following the Optionee's notice, each of the
                  Company and the Optionee shall choose an appraiser and the

<PAGE>

                                      -3-

                  two appraisers shall select a third appraiser, or if they are
                  unable to agree on a third appraiser, then the appraisers
                  shall request the American Arbitration Association to appoint
                  a qualified appraiser, and the appointment by the American
                  Arbitration Association shall be binding on the parties. All
                  appraisers selected hereunder shall be disinterested parties
                  who are experienced in the appraisal of closely held
                  businesses and businesses engaged in activities similar to
                  those conducted by the Company. The appraisers shall value the
                  Company as a going concern. The appraisers shall be directed
                  to issue a written report describing the method of valuation
                  in reasonable detail, and to produce such valuation in thirty
                  (30) days from the date on which he or she obtains from the
                  Company what he or she deems to be sufficient data from which
                  to make the appraisal, but in no event later than forty-five
                  (45) days after the appointment of the appraisers, unless a
                  longer period is agreed to in writing by the Company and the
                  Optionee. The average of the two closest appraised values
                  shall be the "Fair Market Value" per share which shall be
                  conclusive and binding on the parties. The costs of the
                  appraisal shall be borne equally by the parties unless the
                  Company's initial determination of fair market value is less
                  than the appraised fair market value by ten (10%) percent or
                  more, in which case, the Company shall bear the costs of the
                  appraisal.

         c)       Delivery of Shares Tendered in Payment of Purchase Price. If
                  the Optionee exercises the options by delivery of shares of
                  Common Stock of the Company, the certificate or certificates
                  representing the shares of Common Stock of the Company to be
                  delivered shall be duly executed in blank by the Optionee or
                  shall be accompanied by a stock power duly executed in blank
                  suitable for purposes of transferring such shares to the
                  Company. Fractional shares of Common Stock of the Company will
                  not be accepted in payment of the purchase price of shares
                  acquired upon exercise of this option.

4. Delivery of Shares. The Company shall, upon payment of the option price for
the number of shares purchased and paid for, make prompt delivery of such shares
to the Optionee, provided that if any law or regulation requires the Company to
take any action with respect to such shares before the issuance thereof, then
the date of delivery of such shares shall be extended for the period necessary
to complete such action. No shares shall be issued and delivered upon the
exercise of any option unless and until, in the opinion of counsel for the
Company, any applicable registration requirements of the Securities Act of 1933,
any applicable listing requirements of any national securities exchange on which
stock of the same class is then listed, and any other requirements of law or of
any regulatory bodies having jurisdiction over such issuance and delivery, shall
have been fully complied with.

5. Non-transferability of Option. Except as provided in paragraph (d) of section
2, this option is personal and no rights granted hereunder may be transferred,
assigned, pledged or hypothecated in any way (whether by operation of law or
otherwise) nor shall any such rights be subject to execution, attachment or
similar process.

<PAGE>

                                      -4-

6. No Special Rights. Nothing contained in the Plan or this option shall be
construed or deemed by any person under any circumstances to bind the Company to
continue its relationship with the Optionee for the period within which this
option may be exercised.

7. Rights as a Stockholder. The Optionee shall have no rights as a shareholder
with respect to any shares which may be purchased by exercise of this option
unless and until such option is properly exercised in accordance with section
2(b). Except as otherwise expressly provided in the Plan, no adjustment shall be
made for dividends or other rights until such option is properly exercised.

8. Stockholders Agreement. The Optionee agrees that upon the exercise of this
option, the Optionee will enter into a certain Stockholders Agreement dated as
of November 24, 1999 by and among the Company and the other parties named
therein, as the same may be amended (the "Stockholders Agreement"), by executing
a Joinder Agreement in substantially the form attached thereto. Notwithstanding
anything to the contrary, the rights of the Company set forth under Section 9 of
this Agreement shall take precedence over any rights set forth in Section 2 of
the Stockholders Agreement. A copy of the Stockholders Agreement will be
provided to the Optionee at the time this option is exercised or, at the request
of the Optionee, prior to such exercise.

10. Recapitalization. In the event that the outstanding shares of Common Stock
of the Company are changed into or exchanged for a different number or kind of
shares or other securities of the Company by reason of any recapitalization,
reclassification, stock split, stock dividend, combination or subdivision,
appropriate adjustment shall be made in the number and kind of shares to which
this option shall be exercisable. Such adjustment to this option shall be made
without change in the total price applicable to the unexercised portion of this
option, and a corresponding adjustment in the option price per share shall be
made.

11. Reorganization. In case the Company is merged or consolidated with another
corporation and the Company is not the surviving corporation, or in case all or
substantially all of the assets or more than 50% of the outstanding voting stock
of the Company is acquired by any other corporation, person or entity, or in
case of a reorganization or liquidation of the Company, prior to the Expiration
Date or termination of this option, all installments of this option set forth in
Section 2 shall become immediately vested and exercisable.

12. Withholding Taxes. The Company's obligation to deliver Shares shall be
subject to the Optionee's satisfaction of all applicable federal, state and
local income and employment tax withholding requirements.

13. Investment Representations.

         The Optionee represents, warrants and covenants that:

<PAGE>

                                      -5-

         a)       Any Shares purchased hereunder shall be acquired for the
                  Optionee's account for investment only, and not with a view
                  to, or for sale in connection with, any distribution of the
                  shares in violation of the Securities Act of 1933 (the
                  "Securities Act"), or any rule or regulation under the
                  Securities Act.

         b)       The Optionee has had such opportunity as he or she has deemed
                  adequate to obtain from representatives of the Company such
                  information as is necessary to permit the Optionee to evaluate
                  the merits and risks of his or her investment in the Company.

         c)       The Optionee is able to bear the economic risk of holding the
                  Shares for any required holding periods.

14.      Miscellaneous.

         a)       Except as provided herein, this option may not be amended or
                  otherwise modified unless evidenced in writing and signed by
                  the Company and the Optionee.

         b)       Any notices or other communications required or permitted
                  hereunder shall be sufficiently given if delivered personally
                  or sent by Federal Express or similar overnight courier or by
                  registered or certified mail, postage prepaid, addressed in
                  any event to the parties at their respective addresses set
                  forth beneath their names below, or to such other address of
                  which the parties have given notice in accordance with this
                  Section 14(b). Such notices or other communications shall be
                  deemed received (i) on the date delivered, if delivered
                  personally, (ii) three business days after being deposited
                  with the U.S. Post Office, if sent by registered or certified
                  mail, unless the receipt for delivery states a different date
                  or (iii) on the next business day, if sent by Federal Express
                  or similar overnight courier, unless the receipt for delivery
                  states a different date.

         c)       This option shall be governed by and construed in accordance
                  with the laws of the Commonwealth of Massachusetts.

         d)       By acceptance of this option the Optionee agrees to the terms
                  and conditions hereof.

         e)       The Company certifies and represents that the Amended and
                  Restated 1993 Stock Option Plan dated May 8, 1997, as amended,
                  is the current and effective version of the Stock Option Plan.

Date of Grant:                                  UNICA CORPORATION

                                                By:_____________________________
                                                Title:
                                                Address:
Accepted and Agreed:

____________________________________
Optionee:
Address:

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