Document:

<PAGE>

                                                                   EXHIBIT 10.56

                           FIRST AMENDMENT TO SUBLEASE

      THIS FIRST AMENDMENT TO SUBLEASE (this "First Amendment") is dated the
26th day of July, 2002, and entered into by and between ARIAD Corporation
("Sublandlord") and Aventis Pharmaceuticals Inc. (formerly known as Hoechst
Marion Roussel Inc.) ("Subtenant").

                              W I T N E S S E T H:

      WHEREAS, by Lease dated January 8, 1992 ("Original Lease"), ARIAD
Pharmaceuticals, Inc. leased from Forest City Cambridge, Inc. ("Prime Landlord")
certain space in the building known as The Jackson Building, having a street
address of 26 Landsdowne Street, Cambridge, Massachusetts ("Building").

      WHEREAS, ARIAD Pharmaceuticals, Inc. assigned its interest in the Original
Lease to Sublandlord, which assignment was executed on October 19, 1992, and
recorded with the Middlesex County Southern District Registry of Deeds in Book
22527, Page 581, and filed with the Middlesex County Southern Registry District
of the Land Court as Document No. 888025 noted on Certificate of Title No.
157415.

      WHEREAS, the Original Lease as amended by the First and the Second
Amendments to Lease, each dated May 12, 1994, the Third Amendment to Lease,
dated June 1, 1994, a letter agreement, dated December 16, 1996, a letter
agreement dated July 31, 1998, the Sixth Amendment to Lease, dated December 31,
1999, a letter agreement dated October 2, 2001, and the Seventh Amendment to
Lease, dated March 2001, as the same may from time to time be further amended
and supplemented, are hereinafter referred to collectively as the "Prime Lease."
All of the space in the Building that is now or hereafter leased by Sublandlord
pursuant to the Prime Lease is hereinafter referred to as the "Prime Lease
Premises."

      WHEREAS, pursuant to a certain Agreement of Sublease, dated December 31,
1999 (the "Original Sublease"; and, together with this First Amendment, the
"Sublease"), Sublandlord leased to Subtenant, and Subtenant leased from
Sublandlord, approximately 34,365 rentable square feet of the Prime Lease
Premises (the "Subleased Premises"), all as more fully described in the Original
Sublease; pursuant to a certain Consent to Sublease, dated as of December 31,
1999 ("Consent to Sublease"), Prime Landlord consented to the Original Sublease.

      WHEREAS, Sublandlord has exercised its option to extend the termination
date of the Prime Lease (the "Prime Lease Term") for a period of five (5) years
from July 31, 2002 to July 31, 2007, and Subtenant desires to extend the
termination date of the Sublease for a period of five (5) years from July 31,
2002 to July 31, 2007.

      WHEREAS, Sublandlord and Subtenant seek to memorialize the terms of the
Sublease extension within this First Amendment and, as a condition to this First
Amendment, are required to obtain the prior written consent of Prime Landlord.
<PAGE>
      NOW THEREFORE, in consideration of Ten Dollars ($10.00) and other good and
valuable consideration the receipt and sufficiency of which are hereby
acknowledged, Sublandlord and Subtenant confirm and agree as follows:

      1. FIRST SUBLEASE EXTENSION TERM. Sublandlord and Subtenant hereby extend
the Term of the Sublease for a period of five (5) years (the "First Sublease
Extension Term") commencing on August 1, 2002 (the "First Sublease Extension
Term Commencement Date") and, unless sooner terminated pursuant to the Sublease
or the Prime Lease, ending on July 31, 2007 ("First Extension Term Termination
Date"); provided, however, that Sublandlord agrees that it will not agree to a
termination of the Prime Lease prior to the First Extension Term Termination
Date unless (i) the Sublease has been terminated pursuant to its terms, or (ii)
in connection with Sublandlord's termination of the Prime Lease, the Prime
Landlord accepts the Sublease as a direct lease between Prime Landlord and
Subtenant. On the First Extension Term Termination Date, Subtenant shall
surrender possession of the Subleased Premises and Subtenant waives the right to
any notice of termination or notice to quit. Subject to the limitations
expressed in clauses (i) though (vi), inclusive, of the fifth sentence of
Section 3 of the Original Sublease, Subtenant covenants that upon the First
Extension Term Termination Date or sooner termination of the Sublease, Subtenant
shall, without notice, deliver up and surrender possession of the Subleased
Premises in the same condition in which Subtenant has agreed to keep the same
during the continuance of the Term of the Sublease and in accordance with the
terms thereof, normal wear and tear excepted, first removing therefrom all good
and effects of Subtenant and any Required Removable Alterations (as defined in
the Prime Lease) installed by or for the benefit of Subtenant during the Term of
the Sublease and repairing all damage caused by such removal and restoring the
Subleased Premises as provided in Section 4.3 of the Prime Lease, it being
understood that, as more fully expressed in clause (v) of the fifth sentence of
Section 3 of the Original Sublease, Subtenant shall not be obligated to remove,
repair or restore any Required Removable Alterations existing within the
Subleased Premises on the Commencement Date of the Original Sublease.

      2. BASIC RENT/ADDITIONAL RENT. Effective as of the First Sublease
Extension Term Commencement Date and continuing through the last day of the
First Sublease Extension Term, Basic Rent for the Subleased Premises shall be
One Million Five Hundred Forty-Six Thousand Four Hundred Twenty-Five and No/100
Dollars ($1,546,425.00) per year with monthly payments of Basic Rent in the
amount of One Hundred Twenty-Eight Thousand Eight Hundred Sixty-Eight and 75/100
Dollars ($128,868.75) per month. In addition, Subtenant hereby agrees to pay,
during the First Sublease Extension Term, all "Additional Rent" attributable to
the Subleased Premises as expressed in Section 8 of the Original Sublease and as
generally set forth on Schedule 8.02 attached to the Sublease, except that
during the First Sublease Extension Term, in lieu of the current monthly charge
of Three Thousand Two Hundred Fifty-One and 80/100 Dollars ($3,251.80) per month
and Thirty-Nine Thousand Twenty-One and 60/100 Dollars ($39,021.60) per year
being paid by Subtenant toward the operating expenses for shared mechanicals
located in the northeast and southeast areas of the first floor, Subtenant shall
pay to Sublandlord, on the same day Subtenant's installments of Basic Rent and
Additional Rent are due,

                                       2
<PAGE>
the sum of Fourteen Thousand Nine Hundred Eighty-Eight and 75/100 Dollars
($14,988.75) per month, and One Hundred Seventy-Nine Thousand Eight Hundred
Sixty-Five and No/100 Dollars ($179,865.00) per year.

      3. BROKERS. Each of Sublandlord and Subtenant warrants and represents that
such party has not dealt with any broker in connection with the consummation of
this First Amendment other than The Staubach Company; and in the event any claim
is made against either party by any other broker or agent alleging dealings with
the representing party, the party against whom the claim is made shall defend,
save harmless and indemnify the other on account of any loss, cost, damage and
expense (including, without limitation, reasonable attorneys' fees and
disbursement) which may be suffered or incurred by the indemnified party by
reason of such claim. Subtenant agrees that it shall be solely responsible for
the payment of any brokerage commission or fee which may be due to The Staubach
Company in connection with this First Amendment.

      4. DEFINITIONS. All capitalized terms used herein shall have the same
meaning as set forth in the Original Sublease unless specifically otherwise
provided herein.

      5. EFFECT OF AMENDMENT. Except as set forth herein, the Sublease shall
remain unchanged and in full force and effect. All references to the "Sublease"
shall be deemed to be references to the Original Sublease as amended by this
First Amendment.

      6. EFFECTIVENESS UPON CONSENT OF PRIME LANDLORD AND EXECUTION BY THE
PARTIES. This First Amendment shall become effective upon (i) delivery of the
written consent of Prime Landlord to this First Amendment in accordance with the
terms of the Consent to Sublease; and (ii) execution and delivery of this First
Amendment by each of Sublandlord and Subtenant. This First Amendment may be
executed in one or more counterparts.

      EXECUTED in one or more counterparts by persons or officers hereunto duly
authorized as of the date and year first above written.

                                               SUBLANDLORD:
                                               ARIAD Corporation

Attest:   /s/ Laurie Allen                     By:   /s/ Edward M. Fitzgerald
        --------------------------                  -------------------------
        Name:  Laurie Allen                        Name:  Edward M. Fitzgerald
               -------------------                          -------------------
        Title:  Senior Vice President,             Title:  Senior Vice President
               ------------------------                    ---------------------
        Chief Legal Office, Secretary              and Chief Financial Officer
       -----------------------------               -----------------------

                                               SUBTENANT:
                                               Aventis Pharmaceuticals Inc.

Attest:     /s/ Robert P. Cull                 By:    /s/ Errol de Souza
       ------------------------                      -----------------------

                                       3
<PAGE>
         Name:   Robert P. Cull                Name:   Erroll de Souza
               ----------------                         ------------------
         Title:   Manager, NA Real Estate      Title:  Sr. VP & DIA Site Head
                 ------------------------              ----------------------

                                       4<PAGE>

                                                                   EXHIBIT 10.20

                                  BIOGEN, INC.
                        1982 INCENTIVE STOCK OPTION PLAN
       (AS AMENDED THROUGH DECEMBER 13, 2002, EFFECTIVE DECEMBER 31, 2002)

I. DEFINITIONS AND PURPOSE

      A. Definitions: References in this document to the "Company" are to
Biogen, Inc., a Massachusetts corporation; reference to the "Plan" are to the
Biogen, Inc. 1982 Incentive Stock Option Plan; references to the "Code" are to
the United States Internal Revenue Code of 1986, as amended. Unless otherwise
specified or unless the context otherwise requires, the following terms, as used
in the Plan, have the following meanings:

      1. "Affiliate" means a corporation which, for purposes of Section 422 of
the Code, is a parent or subsidiary of the Company, direct or indirect.

      2. "Disability" means permanent and total disability as defined in Section
105(d)(4) of the Code.

      3. "Key Employee" means an employee of the Company or of an Affiliate
(including, without limitation, an employee who is also serving as an officer of
the Company or of an Affiliate), designated by the Committee to be eligible to
be granted one or more Options under the Plan.

      4. "Option" means a right or option granted under the Plan.

      5. "Participant" means a Key Employee to whom one or more Options are
granted under the Plan. As used herein, "Participant" shall include
"Participant's Survivors" where the context requires.

      6. "Participant's Survivors" means a deceased Participant's legal
representatives and/or any person or persons who acquired the Participant's
rights to an Option by will or by the laws of descent and distribution.

      7. "Shares" mean those shares of the Common Stock, $.01 par value, of the
Company as to which Options have been or may be granted under the Plan.

      B. Purposes Of The Plan: The Plan is intended to encourage ownership of
the Shares of the Company by Key Employees in order to attract such Key
Employees, to induce such Key Employees to remain in the employ of the Company
or of an Affiliate and to provide additional incentive for such Key Employees to
promote the success of the Company or its Affiliates. It is further intended
that Options issued pursuant to the Plan shall be eligible to constitute
"incentive stock options" within the meaning of Section 422 of the Code.

                                       1
<PAGE>

II. SHARES SUBJECT TO THE PLAN

      The aggregate number of Shares as to which Options may be granted from
time to time shall be 54,208,000; provided, however that such aggregate number
shall be reduced by the number of shares which have been sold under, or may be
sold pursuant to options granted from time to time under the Company's 1985
Non-Qualified Stock Option Plan (the "1985 Plan"), to the same extent as if such
sales had been made or options granted pursuant to this Plan.

      If any option granted under this Plan or the 1985 Plan ceases to be
"outstanding", in whole or in part, other than by reason of the exercise of such
option, the shares which were subject to such option shall be available for the
granting of other Options. Any option shall be treated as "outstanding" until
such option is exercised in full, terminates under the provisions of this Plan
or the 1985 Plan, as the case may be, or expires by reason of lapse of time.

      The aggregate number of Shares as to which Options may be granted shall be
subject to change only by means of an amendment of the Plan duly adopted by the
Company and approved by the Shareholders of the Company within one year before
or after the date of the adoption of any such amendment, subject to the
provisions of Article VII.

III. ADMINISTRATION OF THE PLAN

      The Plan shall be administered by the Stock and Option Plan Administration
Committee of the Company (the "Committee"). The membership of the Committee
shall be determined and shall be subject to change without cause and without
notice from time to time, by the Company.

      The Committee is authorized to interpret the provisions of the Plan or of
any Option and to make all rules and determinations necessary or advisable for
the administration of the Plan. It may from time to time determine which
employees of the Company or of any Affiliate shall be designated as Key
Employees and which of the Key Employees shall be granted Options and, subject
to the other provisions of the Plan, the number of Shares for which an Option or
Options shall be granted. Subject to the provisions of the Plan, Options may be
granted upon such terms and conditions as the Committee may prescribe; provided,
however, that such terms and conditions shall be prescribed in the context of
preserving, to the extent reasonably possible, the United States tax status of
the Options as incentive stock options.

      This Plan is intended to comply in all respects with Rule 16b-3 or its
successors promulgated under the Securities Exchange Act of 1934 ("1934 Act")
with respect to participants who are subject to Section 16 of the 1934 Act, and
any provision in this Plan with respect to such persons contrary to Rule 16b-3
shall be deemed null and void to the extent permissible by law and deemed
appropriate by the Committee.

                                       2
<PAGE>

IV. ELIGIBILITY FOR PARTICIPATION

      Each Participant must be a Key Employee of the Company or of an Affiliate
at the time an Option is granted.

      The Committee may grant to one or more Key Employees one or more Options,
and shall designate the number of Shares to be optioned under each Option so
granted; provided, however, that no Options shall be granted after June 23,
2005, and provided further, that the fair market value (determined as of the
date the Options are granted) of the Shares as to which incentive stock options
granted on or after January 1, 1987 by the Company or its Affiliates to any
individual employee under the Plan and/or under any other incentive stock option
plans are exercisable for the first time in any one calendar year shall not
exceed $100,000.

      Notwithstanding any of the foregoing provisions, the Committee may
authorize the grant of an Option to a person not then in the employ of the
Company or of an Affiliate, conditioned upon such person becoming eligible to be
a Participant at or prior to the execution of the Option agreement evidencing
such Option.

      In no event shall any employee be granted in any calendar year options to
purchase or receive more than 2,400,000 shares of the Company's Common Stock
pursuant to this Plan.

V. TERMS AND CONDITIONS

      Each Option shall be set forth in writing in an Option agreement, duly
executed on behalf of the Company and by the Participant to whom such Option is
granted. No Option shall be deemed to have been granted and no purported grant
of any Option shall be effective, until such Option shall have been approved by
the Committee. The Committee may provide that Options be granted subject to such
conditions as the Committee may deem appropriate, including without limitation,
subsequent approval by the shareholders of the Company of this Plan or any
amendments thereto. Each such Option agreement shall be subject to at least the
following terms and conditions:

      A. Option Price: If, including for this purpose the Shares which are the
subject of Options previously granted and outstanding or proposed to be granted
hereunder, the optionee owns 10% or less of the total combined voting power of
all classes of share capital of the Company, the Option price (per share) of the
Shares covered by each Option granted hereunder shall be not less than the fair
market value (per share) of the Shares on the date of the grant of the Option;
provided, however, that in no event shall the Option price be less than the par
value per share of Common Stock. In all other cases, the Option price shall be
not less than 110% of the said fair market value. For purposes hereof, the fair
market value shall be the average between the high and low sale prices, as
reported in the National Association of Securities Dealers

                                       3
<PAGE>

Automated Quotation System ("NASDAQ") for the date of the grant of the Option
or, if none, for the most recent trading date thirty (30)days or less prior to
the date of the grant of the Option on which the Common Stock was traded. If the
fair market value cannot be determined under the preceding sentence, it shall be
determined in good faith by the Committee.

      B. Number of Shares: Each Option shall state the number of Shares to which
it pertains.

      C. Term of Option: Each Option shall terminate at such date as the
Committee, at the time it authorizes the grant of the Option, shall determine,
and shall be subject to earlier termination as herein provided, except that if
the option price is required under Paragraph A of this Article V to be at least
110% fair market value, each such Option shall terminate not more than five (5)
years from the date of the grant hereof; and provided that in no case may the
term of any Option exceed ten (10) years.

      D. Date of Exercise: The Committee may prescribe the date or dates on
which the Option becomes exercisable, and may provide that the Option rights
accrue or become exercisable in installments over a period of months or years,
or upon the attainment of stated goals. The Committee may stipulate that any
Option which becomes exercisable shall be subject to cancellation or that Shares
purchased upon the exercise of such Option shall be subject to repurchase rights
in favor of the Company. In such event, the Committee shall determine the date
or dates, or event or events, upon which such cancellation or repurchase rights
shall become effective or shall lapse, as the case maybe.

      E. Medium of Payment: The option price shall be payable upon the exercise
of the Option. It shall be payable in cash, or, if permitted by the Committee
and by Section 422 of the Code, in shares or other consideration.

      F. Prior Options: By its terms, each Option granted prior to January 1,
1987 under the Plan to a Participant, shall not be exercisable while there
is"outstanding" any other incentive stock option (as defined in the predecessor
to Section 422 of the Code), which was granted before the grant of such Option,
to such Participant to purchase Shares in the Company or in an Affiliate or in a
predecessor of the Company or of an Affiliate.

      G. Termination of Employment: A Participant who ceases (for any reason
other than death or disability or termination by the Participant's employer for
cause) to be an employee of the Company or of an Affiliate, may exercise any
Option granted to such Participant, to the extent that the right to purchase
Shares thereunder has accrued on the date of such termination of employment, but
only within three (3) months, or such shorter period as may be determined by the
Committee, after such date, or, if earlier, within the originally prescribed
term of the Option. A Participant's employment shall not be deemed terminated by
reason of a transfer to another employer which is the Company or an Affiliate.

                                       4
<PAGE>

      A Participant whose employment is terminated by the Participant's employer
for cause shall forthwith upon such termination cease to have any right to
exercise any Option. For purposes of this paragraph, "cause" shall be deemed to
include dishonesty with respect to the employer, insubordination, substantial
malfeasance or non-feasance of duty, unauthorized disclosure of confidential
information, and conduct substantially prejudicial to the business of the
Company or any Affiliate. The determination of the Committee as to the existence
of cause shall be conclusive on the Participant and Company.

      A Participant to whom an Option has been granted under the Plan who is
absent from work with the Company or with an Affiliate because of temporary
disability, or who is on leave of absence for any purpose permitted by any
authoritative interpretation of Section 422, shall not, during the period of any
such absence, be deemed, by virtue of such absence alone, to have terminated his
employment with the Company or with an Affiliate, except as the Committee may
otherwise expressly provide.

      H. Disability: If a Participant ceases to be an employee of the Company or
of an Affiliate by reason of Disability, any Option held by him or her on the
date of Disability shall be exercisable as to all or any part of the Shares
subject to the Option, all of which shares shall be fully vested as of the date
of such Disability. A Disabled Participant may exercise such Option only within
a period of one (1) year after the date as of which the Committee determines
that he or she became Disabled, or, if earlier, within the originally prescribed
term of the Option.

      I. Death: If a Participant dies while the Participant is an employee of
the Company or of an Affiliate, any Option held by him or her at the date of
death shall be exercisable as to all or any part of the Shares subject to the
Option, all of which shares shall be fully vested as of the date of the
Participant's death. A deceased Participant's Survivors may exercise such Option
only within a period of one (1) year after the date of death, or, if earlier,
within the originally prescribed term of the Option.

      J. Exercise of Option and Issue of Shares: Options shall be exercised by
giving written notice to the Company, addressed to the Company at the address
specified in the Option agreement, with which the Participant shall tender the
Option price. Such written notice shall be signed by the person exercising the
Option, shall state the number of Shares with respect to which the Option is
being exercised, and shall contain any warranty required by Article VI. The
issuance of the Shares may be delayed by the Company if any law or regulation
requires the Company to take any action with respect to the shares prior to the
issuance thereof. Without limiting the generality of the foregoing, nothing
contained herein shall be deemed to require the Company to issue any Shares if
prohibited by law or applicable regulation.

      The Shares shall, upon delivery, be evidenced by an appropriate
certificate or certificates in respect of paid-up, non-assessable Shares.

                                       5
<PAGE>

      K. Rights as a Shareholder: No Participant to whom an Option has been
granted shall have rights as a shareholder with respect to any Shares covered by
such Option except as to such Shares as have been registered in the Company's
share register in the name of such Participant upon the due exercise of the
Option.

      L. Assignability and Transferability of Options: By its terms, an Option
granted to a Participant shall not be transferable by the Participant otherwise
than by will or by the laws of descent and distribution and shall be
exercisable, during the Participant's lifetime, only by such Participant. Such
Option shall not be assigned, pledged, or hypothecated in any way (whether by
operation of law or otherwise) and shall not be subject to execution,
attachment, or similar process. Any attempted transfer, assignment, pledge,
hypothecation, or other disposition of any Option or of any rights granted
thereunder contrary to the provisions of this Paragraph L, or the levy of any
attachment or similar process upon an Option or such rights, shall be null and
void.

      M. Tax Withholding: In the event that any federal, state, or local income
taxes, employment taxes, Federal Insurance Contributions Act ("F.I.C.A.")
withholdings or other amounts are required by applicable law or governmental
regulation to be withheld from the Option holder's salary in connection with the
exercise of an Option, the Option holder shall advance in cash to the Company,
or to any Affiliate of the Company which employs or employed the Option holder,
the amount of such withholdings unless a different withholding arrangement,
including the use of shares of the Company's Common Stock, is authorized by the
Committee (and permitted by law), provided, however, that with respect to
persons subject to Section 16 of the 1934 Act, any such withholding arrangement
shall be in compliance with any applicable provisions of Rule 16b-3 promulgated
under Section 16 of the 1934 Act. For purposes hereof, the fair market value of
the shares withheld for purposes of payroll withholding shall be determined in
the manner provided in Section V.A. above, as of the most recent practicable
date prior to the date of exercise. If the fair market value of the shares
withheld is less than the amount of payroll withholdings required, the Option
holder may be required to advance the difference in cash to the Company or the
Affiliate employer.

      N. Reload Options: Concurrently with the award of Options under the Plan,
the Committee may authorize reload options ("Reload Options") to purchase for
cash or shares a number of shares of Common Stock. The number of Reload Options
shall equal (i) the number of shares of Common Stock used to exercise the
underlying Options and (ii) to the extent authorized by the Committee, the
number of shares of Common Stock used to satisfy any tax withholding requirement
incident to the exercise of the underlying Options. The grant of a Reload Option
will become effective upon the exercise of underlying Options or Reload Options
through the use of shares of Common Stock held by the optionee for at least 6
months. Reload Options must be evidenced in Option agreements. The Option price
per share of Common Stock deliverable upon the exercise of a Reload Option shall
be determined in accordance with Paragraph V.A. hereof on the date the grant of
the Reload Option becomes effective. The term of each Reload Option shall be
equal to the remaining option term of the underlying Option. No additional
Reload Options shall be granted to Option holders when Options and/or Reload
Options are exercised pursuant to

                                       6
<PAGE>

the terms of this Plan following termination of the Option holder's employment
or on account of death or total and permanent disability. All other provisions
of this Plan with respect to Options shall apply equally to Reload Options.

      O. Other provisions: The Option agreements authorized under the Plan shall
be subject to such other terms and conditions, including, without limitation,
restrictions upon the exercise of the Option, as the Committee shall deem
advisable. Any such Option agreement shall contain such limitations and
restrictions upon the exercise of the Option as shall be necessary in order that
such Option can be an "incentive stock option" within the meaning of the Section
442 of the Code.

VI. PURCHASE FOR INVESTMENT

      If, and to the extent that, the issuance of Shares pursuant to the
exercise of Options is deemed by the Company to be subject to the United States
Securities Act of 1933, as now in force or hereafter amended, ("1993 Act"), or
to the securities laws of any other jurisdiction, the Company shall be under no
obligation to issue the Shares covered by such exercise unless the person or
persons who exercises or who exercise such Option shall make such warranty as
may be required by any applicable securities law of any applicable jurisdiction
and shall, in the case of the applicability of the 1933 Act, in the absence of
an effective registration under such Act with respect to such Shares, warrant to
the Company, at the time of such exercise, that such person is or that they are
acquiring the Shares to be issued to such person or to them, pursuant to such
exercise of the Option, for investment and not with a view to, or for sale in
connection with, the distribution of any such Shares; and in such events the
person or persons acquiring such Shares shall be bound by the provisions of a
legend endorsed upon any share certificates expressing the requirements of any
applicable non-United States securities law, or, in cases deemed governed by the
1933 Act substantially the following legend, which shall be endorsed upon the
certificate or certificates evidencing the Shares issued by the Company pursuant
to such exercise:

            "The shares have not been registered under the securities laws of
            any country including the United States Securities Act of 1933, as
            amended, and the Company may refuse to permit the sale or transfer
            of all or any of the shares until (1) the Company has received an
            opinion of Counsel satisfactory to the Company that any such
            transfer is exempt from registration under all applicable securities
            laws or (2) in the case of sales or transfer to which the United
            States Securities Act of 1933 is applicable, unless a registration
            statement with respect to such shares shall be effective under such
            Act, as amended."

      Without limiting the generality of the foregoing, the Company may delay
issuance of the Shares until completion of any action or obtaining of any
consent which the Company deems necessary under any applicable law (including,
without limitation, state securities or "blue sky" laws).

                                       7
<PAGE>

VII. ADJUSTMENTS UPON CHANGES IN CAPITALIZATION

      In the event that the outstanding Common Stock, $.01 par value, of the
Company is changed into or exchanged for a different number or kind of shares or
other securities of the Company or of another corporation by reason of any
reorganization, merger, consolidation, recapitalization, reclassification,
change in par value, stock split-up, combination of shares or dividend payable
in capital stock, or the like, appropriate adjustment shall be made in the
number and kind of Shares for the purchase of which Options may be granted under
the Plan, and, in addition, appropriate adjustment shall be made in the number
and kind of Shares and in the Option price per share subject to outstanding
Options so that each Option holder shall be in a position equivalent to the
position the Option holder would have been in had the Option holder exercised
the Options immediately prior to the applicable event. No such adjustment shall
be made which shall, within the meaning of Section 424 of the Code, constitute
such a modification, extension or renewal of any Option as to cause it to be
considered as the grant of a new Option.

VIII. DISSOLUTION OR LIQUIDATION OF THE COMPANY

      Upon the dissolution or liquidation of the company other than in
connection with a transaction to which the preceding Article VII is applicable,
all Options granted hereunder shall terminate and become null and void;
provided, however, that if the rights of a Participant or the Participant's
Survivors hereunder have not otherwise terminated and expired, the Participant
or the Participant's Survivors shall have the right immediately prior to such
dissolution or liquidation to exercise any Option granted hereunder to the
extent that the right to purchase Shares thereunder has accrued as of the date
of exercise immediately prior to such dissolution or liquidation.

IX. TERMINATION OF THE PLAN

      The Plan shall terminate on June 23, 2005. The Plan may be terminated at
an earlier date by vote of the Shareholders; provided, however, that expiration
or any such earlier termination shall not affect any Option granted or Option
agreements executed prior to expiration or the effective date of such
termination.

X. AMENDMENT OF THE PLAN

      The Plan may be amended by action of the Committee or the Board of
Directors of the Company; provided, however, that if the scope of any amendment
is such as to require shareholder approval in order to preserve incentive stock
option treatment, then such amendments shall also require approval, within one
(1) year before or after the adoption thereof, by the shareholders, and provided
further that if the scope of any amendment is such as to require shareholder
approval in order to comply with Rule 16b-3 under the 1934 Act, then such
amendment shall also require approval by the shareholders. Any amendment shall
not affect any Options theretofore granted and any Option agreements theretofore
executed by the Company

                                       8
<PAGE>

and a Participant, unless such amendment shall expressly so provide. No
amendment shall adversely affect any Participant with respect to an outstanding
Option without the written consent of such Participant. With the consent of the
Option holder affected, the Committee may amend any outstanding Option agreement
in a manner not inconsistent with the plan, including, without limitation, to
accelerate the date of exercise of any installment of any Option.

XI. EMPLOYMENT RELATIONSHIP

      Nothing herein contained shall be deemed to prevent the Company or an
Affiliate from terminating the employment of a Participant, nor to prevent a
Participant from terminating the Participant's employment with the Company or an
Affiliate.

XII. EFFECTIVE DATE

      This Plan first became effective as of January 8, 1982, subject to the
approval, within one (1) year after such adoption, of the shareholders of the
Company.

                                       9

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