Document:

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                                                                    Exhibit 10.4

                         ASCENTIAL SOFTWARE CORPORATION
         AMENDED AND RESTATED CHANGE OF CONTROL AND SEVERANCE AGREEMENT

         This Amended and Restated Change of Control and Severance Agreement
(the "Agreement") is made and entered into by and between Jason Silvia (the
"Executive") and Ascential Software Corporation (the "Company"), effective as of
the last date set forth by the signatures of the parties below (the "Effective
Date").

RECITALS

         A.    It is expected that the Company from time to time will consider
the possibility of an acquisition by another company or other Change of Control
(as defined below). The Board of Directors of the Company (the "Board")
recognizes that such consideration, and the possibility that the Executive's
employment could be terminated by the Company for a reason other than for cause,
can be distractions to the Executive and can cause the Executive to consider
alternative employment opportunities. The Board has determined that it is in the
best interests of the Company and its stockholders to assure that the Company
will have the continued dedication and objectivity of the Executive,
notwithstanding the possibility, threat or occurrence of a Change of Control of
the Company or the termination by the Company of the Executive's employment for
a reason other than for cause.

         B.    The Board believes that it is in the best interests of the
Company and its stockholders to provide the Executive with an incentive to
continue his or her employment with the Company, or a wholly-owned subsidiary of
the Company, as the case may be, and to motivate the Executive to maximize the
value of the Company upon a Change of Control for the benefit of its
stockholders.

         C.    The Board believes that it is imperative to provide the Executive
with certain benefits upon a Change of Control or upon the termination by the
Company of the Executive's employment for a reason other than cause, thereby
encouraging the Executive to remain with the Company notwithstanding the
possibility of a Change of Control or termination of employment for a reason
other than for cause.

         D.    The Executive and the Corporation are parties to a Change in
Control and Severance Agreement effective August 16, 2000 (the "Prior
Agreement") and desire to amend and restate the entire Prior Agreement.

         Now, therefore, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company and the Executive
hereby agree to amend and restate the Prior Agreement as follows:

         1.    PRIOR AGREEMENT. The Prior Agreement is hereby amended by
deleting the entirety of the Prior Agreement and restating the Prior Agreement
as follows:

         2.    TERM OF AGREEMENT. This Agreement shall terminate upon the date
that all obligations of the Company and the Executive with respect to this
Agreement have been satisfied.

         3.    AT-WILL EMPLOYMENT. The Company and the Executive acknowledge
that the Executive's employment is and shall continue to be at-will, as defined
under applicable law, and may be terminated at any time by either party, with or
without cause.

         4.    CHANGE OF CONTROL. In the event a Change of Control (as defined
below) occurs within six months following the effective date of options granted
to the Executive to purchase the Company's common stock, and if the Executive is
employed by the Company as of the date of the Change of Control,
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the Executive's stock options shall have their vesting accelerated as to two
years' additional vesting. In the event that stock option vesting is accelerated
pursuant to the preceding sentence, the remaining stock options, if any, shall
continue to vest at a monthly rate equal to the total number of shares
originally subject to the option divided by the number of months in the original
vesting schedule. In the event a Change of Control occurs on or after six months
following the effective date of options granted to the Executive to purchase the
Company's common stock, and if the Executive is employed by the Company as of
the date of the Change of Control, the Executive's Stock Options shall have
their vesting accelerated in full so as to become 100% vested. In the event
that: (a) accelerated vesting of stock options occurs pursuant to this Section
4; and (b) the Executive becomes entitled to severance pursuant to Section 6
hereof, the Executive will have a period of twenty seven months from and after
the date of a Non-Cause Termination of the Executive during which to exercise
all such vested options. However, if the Executive becomes employed by a
competitor of the Company: (a) the Executive shall immediately notify the
Company in writing of the name and location of Executive's new employer
("Competitive Employment"); and (b) the extended period in which Executive has
to exercise all vested options described in the preceding sentence will
terminate immediately upon the earlier to occur of written notice by the Company
to the Executive or the actual date upon which the Executive commenced
Competitive Employment.

         For the purposes of this Agreement, "Change of Control" shall mean:

               (a)  the approval by the stockholders of the Company of a merger
or consolidation of the Company with any other corporation, other than a merger
or consolidation which would result in the voting securities of the Company
outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into voting securities of the
surviving entity) fifty percent (50%) or more of the total voting power
represented by the voting securities of the Company or such surviving entity
outstanding immediately after such merger or consolidation; or

               (b)  any approval by the stockholders of the Company of a plan of
complete liquidation of the Company or an agreement for the sale or disposition
by the Company of all or substantially all of the Company's assets; or

               (c)  any "person" (as that term is used in Sections 13(d) and
14(d) of the Securities Exchange Act of 1934, as amended) becoming the
"beneficial owner" (as defined in Rule 13d-3 under the Securities Exchange Act
of 1934, as amended), directly or indirectly, of securities of the Company
representing 50% or more of the total voting power represented by the Company's
then outstanding voting securities; or

               (d)  a change in the composition of the Board, as a result of
which less than a majority of the directors are Incumbent Directors. "Incumbent
Directors" shall mean directors who either: (a) are directors of the Company as
of the Effective Date; or (b) are elected, or nominated for election, to the
Board with the affirmative votes of at least a majority of those directors whose
election or nomination was not in connection with any transaction described in
subsections (a), (b), or (c) above, or in connection with an actual or
threatened proxy contest relating to the election of directors of the Company.

         5.    GOLDEN PARACHUTE EXCISE TAXES. Anything in this Agreement to the
contrary notwithstanding, in the event it shall be determined that any payment
or distribution, or any acceleration of vesting of any benefit or award, by the
Company or its affiliated companies to or for the benefit of the Executive,
payable within the meaning of Section 280G of the Internal Revenue Code (the
"Code") (whether paid or payable, distributed or distributable or accelerated or
subject to acceleration pursuant to the terms of this Agreement or otherwise,
but determined without regard to any additional payments required under this
Section 5) (a "Payment") would be subject to the excise tax imposed by Section
4999 of the Code, or any interest or penalties are incurred by the Executive
with respect to such excise tax

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(such excise tax, together with any such interest and penalties, are hereinafter
collectively referred to as the "Excise Tax"), then the Executive shall be
entitled to receive an additional payment (a "Gross-Up Payment") on an amount
such that after payment by the Executive of all taxes imposed upon the Gross-Up
Payment and any interest or penalties imposed with respect to such taxes, the
Executive retains an amount of the Gross-Up Payment equal to the sum of: (a) the
Excise Tax imposed upon the Payments; and (b) the product of any deductions
disallowed because of the inclusion of the Gross-Up Payment in the Executive's
adjusted gross income and the highest applicable marginal rate of federal income
taxation for the calendar year in which the Gross-Up Payment is to be made. For
purposes of determining the amount of the Gross-Up Payment, the Executive shall
be deemed to have: (a) paid federal income taxes at the highest marginal rates
of federal income taxation for the calendar year in which the Gross-Up Payment
is to be made; (b) paid applicable state and local income taxes at the highest
rate of taxation for the calendar year in which the Gross-Up Payment is to be
made, net of the maximum reduction in federal income taxes which could be
obtained from deduction of such state and local taxes; and (c) otherwise
allowable deductions for federal income tax purposes at least equal to those
which would be disallowed because of the inclusion of the Gross-Up Payment in
the Executive's adjusted gross income. The payment of a Gross-Up Payment under
this Section 4 shall in no event be conditioned upon the Executive's termination
of employment or the receipt of severance benefits under this Agreement.

         6.    SEVERANCE.

               (a)  If the Executive is employed by the Successor (as defined in
Section 8(a) below), and if within one year after a Change of Control, the
Executive's employment is terminated (as defined below) for any reason other
than for Cause (as defined below) by the Successor or for Good Reason (as
hereinafter defined) by the Executive (hereinafter referred to as a "Non-Cause
Termination Of Employment"), the Company shall pay the Executive: (i) a lump sum
cash severance payment in the amount of (A) two years of the Executive's total
annual compensation in effect at the time of Non-Cause Termination of
Employment, it being understood that the Executive's total annual compensation
consists of base salary plus any then applicable incentive or bonus amount
calculated at 100% of the target bonus for Executive for the then current fiscal
year, or, if greater, (B) $1,000,000 ("Base Severance") plus an additional
amount equal to 100% of the Base Severance; and (ii) continued payment by the
Company on behalf of the Executive, for a period of two years following the
Non-Cause Termination of Employment of Executive, for benefits substantially
similar to those to which the Executive was entitled on the date of the Change
of Control ("Benefits Continuation"). However, if the Executive becomes employed
during the two-year period described in the preceding sentence: (i) the
Executive must immediately notify the Company in writing of the identity of
Executive's new employer; and (ii) the Company's obligation to continue to pay
for Benefits Continuation will terminate as of the date Executive is first so
employed. The severance payment required pursuant to this section will be made
by the Company within ten (10) days following Non-Cause Termination of
Employment and the amount paid will be net of withholding taxes and all usual
payroll deductions.

               (b)  In the event of Executive's Non-Cause Termination of
Employment: (i) prior to or in the absence of a Change of Control; or (ii) more
than one year following a Change of Control following which the Executive
continues to be employed by the Company, the Company shall: (i) pay the
Executive a lump sum cash severance payment in the amount of (A) two years of
the Executive's base salary in effect at the time of Non-Cause Termination of
Employment, it being understood that base salary shall, in such an instance, not
include any incentive or then applicable target bonus amount, or, if greater,
(B) the Base Severance; and (ii) for a period of two years from the date of the
Non-Cause Termination, pay on behalf of the Executive, for benefits
substantially similar to those to which the Executive was entitled on the date
of the Non-Cause Termination of Employment. Further, in the event of a Non-Cause
Termination of Employment of the Executive, all stock options that were unvested
as of July 1, 2001 shall immediately vest 100%. All other options held by
Executive shall continue to vest for one year after the date of such Non-Cause
Termination under this Section 6.b. and shall be exercisable for a period of
fifteen months from and after such date of Non-Cause Termination under this
Section 6.b.

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However, if the Executive becomes employed during the one-year period described
in the preceding sentence: (i) the Executive must immediately notify the Company
in writing of the identity of Executive's new employer; and (ii) the Company's
obligation to continue to pay for Benefits Continuation will terminate as of the
date Executive is first so employed. The severance payment required pursuant to
this section will be made by the Company within ten (10) days following
Non-Cause Termination of Employment and the amount paid will be net of
withholding taxes and all usual payroll deductions.

               (c)  If (i) the Executive's employment is terminated for Cause by
either the Company or by a Successor, (ii) the Executive continues to be
employed by the Company following a Change of Control, or (iii) the Executive
voluntarily resigns, other than for Good Reason, the Executive shall not be
entitled to nor shall the Executive receive any severance payment whatsoever.

               (d)  For purposes of this Agreement, "Cause" shall mean the
occurrence of one or more of the following: (i) Executive's conviction by, or
entry of a plea of guilty or nolo contendre in, a court of competent
jurisdiction for any crime which constitutes a felony in the jurisdiction in
which the conduct alleged to constitute the felony occurred; (ii) Executive's
misappropriation of funds or property or commission of an act of fraud, whether
prior or subsequent to the Effective Date; (iii) gross negligence or
recklessness by the Executive in the scope of the Executive's services to the
Company; (iv) a breach by the Executive of a material provision of this
Agreement which is not cured within 30 days of notice; (v) a willful failure by
the Executive substantially to perform his or her duties and responsibilities as
an Executive after notice of such failure; or (vi) a material breach by the
Executive of the Company's policies or procedures.

               (e)  GOOD REASON. For purposes of this Agreement, "Good Reason"
for Executive's termination of his employment shall mean the occurrence of any
of the following circumstances without Executive's express written consent:

               (i)    A substantial adverse alteration in responsibilities or
                      the conditions of his employment from those in effect
                      immediately prior to the date of this Agreement;

               (ii)   a reduction by the Company in Executive's annual base
                      salary as in effect on the date hereof or ineligibility of
                      the Executive to participate in the Company's then current
                      executive bonus plan;

               (iii)  the Company requiring Executive to be based more than 50
                      miles from the Company's offices at which he was
                      principally employed immediately prior to the date of this
                      Agreement;

               (iv)   the failure by the Company to continue in effect a health
                      or disability insurance plan in which Executive
                      participates immediately prior to the date of this
                      Agreement unless an equitable arrangement (embodied in an
                      ongoing substitute or alternative plan) has been made with
                      respect to such plan, or the failure by the Company to
                      continue the Executive's participation therein (or in such
                      substitute or alternative plan) on a basis not materially
                      less favorable, both in terms of the amount of benefits
                      provided and the level of his participation relative to
                      other participants, than existed at the time of the date
                      of this Agreement;

               (v)    the failure of the Company to obtain a satisfactory
                      agreement from any Successor to assume and agree to
                      perform all obligations of the Company under this
                      Agreement, as contemplated in Section 8 hereto.

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         Executive's right to terminate his employment pursuant to this
Agreement shall not be affected by his incapacity due to physical or mental
illness. Executive's continued employment shall not constitute consent to, or a
waiver of rights with respect to, any circumstance constituting Good Reason
hereunder.

         7.    ATTORNEY FEES, COSTS AND EXPENSES. The Company promptly shall
reimburse the Executive, on a monthly basis, for the reasonable attorney fees,
costs and expenses incurred by the Executive in connection with any action
brought by Executive to enforce his or her rights under this Agreement,
regardless of the outcome of the action.

         8.    SUCCESSORS.

               (a)  COMPANY'S SUCCESSORS. Any successor to the Company (whether
direct or indirect and whether by purchase, merger, consolidation, liquidation
or otherwise) to all or substantially all of the Company's business and/or
assets ("Successor") shall assume the obligations under this Agreement and agree
expressly to perform the obligations under this Agreement in the same manner and
to the same extent as the Company would be required to perform such obligations
in the absence of a succession. For all purposes under this Agreement, the term
"Company," except where otherwise noted, shall include any successor to the
Company's business and/or assets which executes and delivers an assumption
agreement pursuant to this Section 8(a), or which becomes bound by the terms of
this Agreement by operation of law.

               (b)  EXECUTIVE'S SUCCESSORS. The terms of this Agreement and all
rights of the Executive hereunder shall inure to the benefit of, and be
enforceable by, the Executive's personal or legal representatives, executors,
administrators, heirs, distributees, devisees and legatees.

         9.    MISCELLANEOUS PROVISIONS.

               (a)  WAIVER. No provision of this Agreement shall be modified,
waived or discharged unless the modification, waiver or discharge is agreed to
in writing and signed by the Executive and by an authorized officer of the
Company (other than the Executive). No waiver by either party of any breach of,
or of compliance with, any condition or provision of this Agreement by the other
party shall be considered a waiver of any other condition or provision or of the
same condition or provision at another time.

               (b)  WHOLE AGREEMENT. No agreements, representations or
understandings (whether oral or written and whether express or implied) which
are not expressly set forth in this Agreement have been made or entered into by
either party with respect to the subject matter hereof. This Agreement
represents the entire understanding of the Company and the Executive with
respect to the subject matter of this Agreement and the parties agree and
understand that this Agreement is intended by the parties to and hereby does
terminate and supersede all prior similar types of agreements, arrangements and
understandings to which the Executive is a party regarding or relating to the
subject matters of this Agreement, including without limitation any and all
agreements between the Company and Executive relating to any past or future
change of control of the Company. Accordingly, the Executive agrees that he or
she shall not be entitled to any stock option vesting or payments pursuant to
any prior agreement, arrangement or understanding to which the Executive and the
Company or any affiliate thereof is or was a party and that all matters related
to that subject are superceded by this Agreement.

               (c)  CHOICE OF LAW. The validity, interpretation, construction
and performance of this Agreement shall be governed by the laws of the
Commonwealth of Massachusetts.

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               (d)  SEVERABILITY. The invalidity or unenforceability of any
provision or provisions of this Agreement shall not affect the validity or
enforceability of any other provision hereof, which shall remain in full force
and effect.

               (e)  COUNTERPARTS. This Agreement may be executed in
counterparts, each of which shall be deemed an original, but all of which
together will constitute one and the same instrument.

         IN WITNESS WHEREOF, each of the parties has executed this Agreement, in
the case of the Company by its duly authorized officer, under seal, as of the
day and year set forth below.

ASCENTIAL SOFTWARE CORPORATION

By:   /s/ James Koch
    -------------------------------------------------
James Koch, Director and Chairman of the
Compensation Committee, and

By:   /s/ David Ellenberger
    ------------------------------------------------
David Ellenberger, Director and Member of the
Compensation Committee

Dated:  Effective as of May 1, 2002

EXECUTIVE

      /s/ Jason Silvia
-----------------------------------------------------
Jason Silvia

Dated:  Effective as of May 1, 2002

                                      6<PAGE>
                                                                   EXHIBIT 10.3

                                  APPLIX, INC.

                        2000 DIRECTOR STOCK OPTION PLAN
                       (as amended through May 30, 2002)

1.  Purpose.

    The purpose of this 2000 Director Stock Option Plan (the "Plan") of Applix,
Inc.  (the "Company") is to encourage ownership in the Company by non-employee
directors of the Company whose services are considered essential to the
Company's future progress and to provide them with a further incentive to
remain as directors of the Company.

2.  Administration.

    The Board of Directors shall supervise and administer the Plan. All
questions concerning interpretation of the Plan or any options granted under it
shall be resolved by the Board of Directors and such resolution shall be final
and binding upon all persons having an interest in the Plan. The Board of
Directors may, to the full extent permitted by or consistent with applicable
laws or regulations, delegate any or all of its powers under the Plan to a
committee appointed by the Board of Directors, and if a committee is so
appointed, all references to the Board of Directors in the Plan shall mean and
relate to such committee.

3.  Participation in the Plan.

    Directors of the Company who are not employees of the Company or any
subsidiary of the Company ("non-employee directors") shall be eligible to
receive options under the Plan.

4.  Stock Subject to the Plan.

    (a)   The maximum number of shares of the Company's Common Stock, par value
$.0025 per share ("Common Stock"), which may be issued under the Plan shall be
200,000 shares, subject to adjustment as provided in Section 7.

    (b)   If any outstanding option under the Plan for any reason expires or is
terminated without having been exercised in full, the shares covered by the
unexercised portion of such option shall again become available for issuance
pursuant to the Plan.

    (c)   All options granted under the Plan shall be non-statutory options not
entitled to special tax treatment under Section 422 of the Internal Revenue Code
of 1986, as amended (the "Code").

    (d)   Shares issued under the Plan may consist in whole or in part of
authorized but unissued shares or treasury shares.

5.  Terms, Conditions and Form of Options.

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     Each option granted under the Plan shall be evidenced by a written
agreement in such form as the Company shall from time to time approve, which
agreements shall comply with and be subject to the following terms and
conditions:

    (a)   Option Grant Dates. Options shall automatically be granted to the
Directors as follows:

          (i)   each person serving as a non-employee director on the date (the
"Approval Date") that the Plan is approved by the stockholders of the Company
shall be granted an option to purchase 1,500 shares of Common Stock on the
Approval Date;

          (ii)  each person who first becomes a non-employee director on or
following the Approval Date shall be granted an option to purchase 10,000
shares of Common Stock on the date of his or her election to the Board of
Directors (an "Election Grant"); and

          (iii) each non-employee director shall be granted an option to
purchase 10,000 shares of Common Stock on January 1 of each year, beginning
January 1, 2003, provided he or she attended at least 75% of the meetings of
the Board of Directors or any committees on which he or she served in the
preceding year.

Each date of grant of an option pursuant to this Section 5(a) is hereinafter
referred to as an "Option Grant Date."

    (b)   Option Exercise Price. The option exercise price per share for each
option granted under the Plan shall equal (i) the closing price on any national
securities exchange on which the Common Stock is listed, (ii) the closing price
of the Common Stock on the Nasdaq National Market or (iii) the average of the
closing bid and asked prices in the over-the-counter market, whichever is
applicable, as published in The Wall Street Journal, on the Option Grant Date.
If no sales of Common Stock were made on the Option Grant Date, the price of
the Common Stock for purposes of clauses (i) and (ii) above shall be the
reported price for the next preceding day on which sales were made.

    (c)   Transferability of Options. Except as the Board may otherwise
determine or provide in an option granted under the Plan, any option granted
under the Plan to an optionee shall not be transferable by the optionee other
than by will or the laws of descent and distribution, and shall be exercisable
during the optionee's lifetime only by the optionee or the optionee's guardian
or legal representative. References to an optionee, to the extent relevant in
the context, shall include references to authorized transferees.

    (d)   Vesting Period.

          (i)   General. Each option granted under the Plan pursuant to Section
5(a) above shall, in the case of an Election Grant, become exercisable in two
equal annual installments on the first and second anniversaries of the Option
Grant Date, and, in the case of all other option grants, become exercisable in
full on the first anniversary of the Option Grant Date; in each case provided
that the optionee is serving as a director of the Company on such anniversary.

          (ii)  Acceleration Upon a Change In Control. Notwithstanding the
foregoing, each outstanding option granted under the Plan shall immediately
become exercisable in full upon the occurrence of a Change in Control Event (as
defined in Section 8) with respect to the Company.

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          (iii) Right to Receive Restricted Stock. Notwithstanding the
provisions of Section 5(d)(i) above, the Board shall have the authority to
grant options (including options granted pursuant to Section 5(a) above) which
are immediately exercisable subject to the Company's right to repurchase any
unvested shares of stock acquired by the optionee on exercise of an option in
the event such optionee's service as a director terminates for any reason.

    (e)   Termination. Each option shall terminate, and may no longer be
exercised, on the earlier of (i) the date seven years after the Option Grant
Date of such option or (ii) the date 90 days after the optionee ceases to serve
as a director of the Company.

    (f)   Exercise Procedure. An option may be exercised only by written notice
to the Company at its principal office accompanied by (i) payment in cash or by
certified or bank check of the full consideration for the shares as to which
they are exercised, (ii) delivery of outstanding shares of Common Stock (which
have been outstanding for at least six months) having a fair market value on
the last business day preceding the date of exercise equal to the option
exercise price, or (iii) an irrevocable undertaking by a creditworthy broker to
deliver promptly to the Company sufficient funds to pay the exercise price or
delivery of irrevocable instructions to a creditworthy broker to deliver
promptly to the Company cash or a check sufficient to pay the exercise price.

    (g)   Exercise by Representative Following Death of Director. An optionee,
by written notice to the Company, may designate one or more persons (and from
time to time change such designation), including his or her legal
representative, who, by reason of the optionee's death, shall acquire the right
to exercise all or a portion of the option. If the person or persons so
designated wish to exercise any portion of the option, they must do so within
the term of the option as provided herein.  Any exercise by a representative
shall be subject to the provisions of the Plan.

6.  Limitation of Rights.

    (a)   No Right to Continue as a Director. Neither the Plan, nor the granting
of an option nor any other action taken pursuant to the Plan, shall constitute
or be evidence of any agreement or understanding, express or implied, that the
Company will retain the optionee as a director for any period of time.

    (b)   No Stockholders' Rights for Options. An optionee shall have no rights
as a stockholder with respect to the shares covered by his or her option until
the date of the issuance to him or her of a stock certificate therefore, and no
adjustment will be made for dividends or other rights (except as provided in
Section 7) for which the record date is prior to the date such certificate is
issued. Notwithstanding the foregoing, in the event the Company effects a split
of the Common Stock by means of a stock dividend and the exercise price of and
the number of shares subject to stock options are adjusted as of the date of
the distribution of the dividend (rather than as of the record date for such
dividend), then an optionee who exercises an option between the record date and
the distribution date for such stock dividend shall be entitled to receive, on
the distribution date, the stock dividend with respect to the shares of Common
Stock acquired upon such option exercise, notwithstanding the fact that such
shares were not outstanding as of the close of business on the record date for
such stock dividend.

    (c)   Compliance with Securities Laws. Each option shall be subject to the
requirement that if, at any time, counsel to the Company shall determine that
the listing, registration or qualification of the shares subject to such option
upon any securities exchange or under any state or federal law, or the consent
or approval of any governmental or regulatory body, or the disclosure of
non-public information or the satisfaction of any other

<PAGE>

condition is necessary as a condition of, or in connection with, the issuance
or purchase of shares there under, such option may not be exercised, in whole
or in part, unless such listing, registration, qualification, consent or
approval, or satisfaction of such condition shall have been effected or
obtained on conditions acceptable to the Board of Directors. Nothing herein
shall be deemed to require the Company to apply for or to obtain such listing,
registration or qualification, or to satisfy such condition.

7.  Adjustment Provisions for Mergers, Recapitalizations and Related
Transactions.

    If, through or as a result of any merger, consolidation, reorganization,
recapitalization, reclassification, stock dividend, stock split, reverse stock
split, or other similar transaction, (i) the outstanding shares of Common Stock
are exchanged for a different number or kind of securities of the Company or of
another entity, or (ii) additional shares or new or different shares or other
securities of the Company or of another entity are distributed with respect to
such shares of Common Stock, the Board of Directors shall make an appropriate
and proportionate adjustment in (x) the maximum number and kind of shares
reserved for issuance under the Plan, (y) the number and kind of shares or
other securities subject to then outstanding options under the Plan, and (z)
the price for each share subject to any then outstanding options under the Plan
(without changing the aggregate purchase price for such options), to the end
that each option shall be exercisable, for the same aggregate exercise price,
for such securities as such option holder would have held immediately following
such event if he had exercised such option immediately prior to such event. No
fractional shares will be issued under the Plan on account of any such
adjustments.

8.  Definition of "Change in Control Event". A "Change in Control Event"
shall mean:

    (a)   the acquisition by an individual, entity or group (within the
          meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange Act
          of 1934, as amended (the "Exchange Act")) (a "Person") of beneficial
          ownership of any capital stock of the Company after the date of
          adoption of this Plan by the Board of Directors if, after such
          acquisition, such Person beneficially owns (within the meaning of Rule
          13d-3 promulgated under the Exchange Act) 30% or more of either (x)
          the then-outstanding shares of common stock of the Company (the
          "Outstanding Company Common Stock") or (y) the combined voting power
          of the then-outstanding securities of the Company entitled to vote
          generally in the election of directors (the "Outstanding Company
          Voting Securities"); provided, however, that for purposes of this
          subsection (i), the following acquisitions shall not constitute a
          Change in Control Event: (A) any acquisition directly from the Company
          or an underwriter or agent of the Company (excluding an acquisition
          pursuant to the exercise, conversion or exchange of any security
          exercisable for, convertible into or exchangeable for common stock or
          voting securities of the Company, unless the Person exercising,
          converting or exchanging such security acquired such security directly
          from the Company or an underwriter or agent of the Company), (B) any
          acquisition by any employee benefit plan (or related trust) sponsored
          or maintained by the Company or any corporation controlled by the
          Company, or (C) any acquisition by any corporation pursuant to a
          Business Combination (as defined below) which complies with clauses
          (x) and (y) of subsection (iii) of this definition; or

    (b)   such time as the Continuing Directors (as defined below) do not
          constitute a majority of the Board (or, if applicable, the Board of
          Directors of a successor corporation to the Company), where the term
          "Continuing Director" means at any date a member of the Board (x) who
          was a member of the Board on the date of the initial adoption of this
          Plan by the Board or (y) who was nominated or elected subsequent to
          such date by at least a majority of the directors who were

<PAGE>

          Continuing Directors at the time of such nomination or election or
          whose election to the Board was recommended or endorsed by at least a
          majority of the directors who were Continuing Directors at the time of
          such nomination or election; provided, however, that there shall be
          excluded from this clause (y) any individual whose initial assumption
          of office occurred as a result of an actual or threatened election
          contest with respect to the election or removal of directors or other
          actual or threatened solicitation of proxies or consents, by or on
          behalf of a person other than the Board; or

    (c)   the consummation of a merger, consolidation, reorganization,
          recapitalization or statutory share exchange involving the Company or
          a sale or other disposition of all or substantially all of the assets
          of the Company (a "Business Combination"), unless, immediately
          following such Business Combination, each of the following two
          conditions is satisfied: (x) all or substantially all of the
          individuals and entities who were the beneficial owners of the
          Outstanding Company Common Stock and Outstanding Company Voting
          Securities immediately prior to such Business Combination beneficially
          own, directly or indirectly, more than 50% of the then-outstanding
          shares of common stock and the combined voting power of the
          then-outstanding securities entitled to vote generally in the election
          of directors, respectively, of the resulting or acquiring corporation
          in such Business Combination (which shall include, without limitation,
          a corporation which as a result of such transaction owns the Company
          or substantially all of the Company's assets either directly or
          through one or more subsidiaries) (such resulting or acquiring
          corporation is referred to herein as the "Acquiring Corporation") in
          substantially the same proportions as their ownership of the
          Outstanding Company Common Stock and Outstanding Company Voting
          Securities, respectively, immediately prior to such Business
          Combination and (y) no Person (excluding the Acquiring Corporation or
          any employee benefit plan (or related trust) maintained or sponsored
          by the Company or by the Acquiring Corporation) beneficially owns,
          directly or indirectly, 30% or more of the then-outstanding shares of
          common stock of the Acquiring Corporation, or of the combined voting
          power of the then-outstanding securities of such corporation entitled
          to vote generally in the election of directors (except to the extent
          that such ownership existed prior to the Business Combination).

9.  Termination and Amendment of the Plan.

    The Board of Directors may suspend or terminate the Plan or amend it in any
respect whatsoever.

10. Notice.

    Any written notice to the Company required by any of the provisions of the
Plan shall be addressed to the Treasurer of the Company and shall become
effective when it is received.

11. Governing Law.

    The Plan and all determinations made and actions taken pursuant hereto
shall be governed by the internal laws of the Commonwealth of Massachusetts
(without regard to any applicable conflicts of laws or principles).

<PAGE>

12. Effective Date.

    The Plan shall become effective on the date hereof.

                          Adopted by the Board of Directors on December 17, 1999
                               and by the stockholders on May 5, 2000 and
                               amended by the Board of Directors on March 15,
                               2002 and approved by the stockholders on May 30,
                               2002.

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