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                                                                    EXHIBIT 10.9

                          METROCORP BANCSHARES, INC.

                             EXECUTIVE BONUS PLAN

                                I. PLAN PURPOSE

     The purpose of the Executive Bonus Plan (the "Plan") is to provide a means
through which METROCORP BANCSHARES, INC., a Texas corporation, (the "Company"),
may provide additional incentive and reward opportunities designed to enhance
the profitable growth of the Company to Don J. Wang, Chairman of the Board and
Chief Executive Officer of MetroBank, N.A., a national banking association and
wholly owned subsidiary of the Company (the "Bank") and David Tai, President of
the Bank (individually, an "Executive Officer" and collectively, "Executive
Officers"), upon whom the responsibilities of the successful administration and
management of the Bank and the Company rest, as long as the Executive Officers
are serving in their above-stated capacities. Accordingly, the Plan provides for
the annual award of Incentive Stock Options, Non-Qualified Stock Options, shares
of Common Stock, or any combination of the foregoing, as is best suited to the
circumstances, if a certain Return on Equity is achieved for that year as
provided herein.

                               II.  DEFINITIONS

     2.1  "Award" means, individually or collectively, any Option or award of
Common Stock.

     2.2  "Bank" means MetroBank, N.A.

     2.3  "Board" means the Board of Directors of the Company.

     2.4  "Change of Control" means the occurrence of any of the following
events: (i) the Company shall not be the surviving entity in any merger,
consolidation or other reorganization (or survives only as a subsidiary of an
entity other than a previously wholly-owned subsidiary of the Company), (ii) the
Company's subsidiary bank is merged or consolidated into, or otherwise acquired
by, an entity other than a wholly-owned subsidiary of the Company, (iii) the
Company sells, leases or exchanges all or substantially all of its assets to any
other person or entity (other than a wholly-owned subsidiary of the Company),
(iv) the Company is to be dissolved and liquidated, (v) any person or entity,
including a "group" as contemplated by Section 13(d)(3) of the 1934 Act,
acquires or gains ownership or control (including, without limitation, power to
vote or control the voting) of more than 50% of the outstanding shares of the
Company's voting stock (based upon voting power), or (vi) as a result of or in
connection with a contested election of directors, the persons who were
directors of the Company before such election shall cease to constitute a
majority of the Board.

     2.5  "Change of Control Value" shall mean (i) the per share price offered
to shareholders of the Company in any such merger, consolidation,
reorganization, sale of assets or dissolution transaction, (ii) the price per
share offered to shareholders of the Company in any tender offer or
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exchange offer whereby a Change of Control takes place, or (iii) if such Change
of Control occurs other than pursuant to a tender or exchange offer, the Fair
Market Value per share of the shares into which Awards are exercisable, as
determined by the Committee, whichever is applicable. In the event that the
consideration offered to shareholders of the Company consists of anything other
than cash, the Committee shall determine the fair cash equivalent of the portion
of the consideration offered which is other than cash.

     2.6   "Code" means the Internal Revenue Code of 1986, as amended.
Reference in the Plan to any section of the Code shall be deemed to include any
amendments or successor provisions to any section and any regulations under such
section.

     2.7   "Committee" means the Compensation Committee of the Board which shall
be (i) constituted so as to permit the Plan to comply with Rule 16b-3 and (ii)
composed solely of "outside directors," within the meaning of section 162(m) of
the Code and applicable interpretive authority thereunder.

     2.8   "Common Stock" means the Company's Common Stock, $1.00 par value per
share.

     2.9   "Company" means MetroCorp Bancshares, Inc.

     2.10  "1934 Act" means the Securities Exchange Act of 1934, as amended.

     2.11  "Executive Officers" means Don J. Wang, while serving as Chairman of
the Board and Chief Executive Officer of the Bank, and David Tai, while serving
as President of the Bank.

     2.12  "Fair Market Value" means, as of any specified date, the mean of the
high and low sales prices of the Common Stock (i) reported by the any
interdealer quotation system on which the Common Stock is quoted on that date or
(ii) if the Common Stock is listed on a national stock exchange, reported on the
stock exchange composite tape on that date; or, in either case, if no prices are
reported on that date, on the last preceding date on which such prices of the
Common Stock are so reported. If the Common Stock is traded over the counter at
the time a determination of its fair market value is required to be made
hereunder, its fair market value shall be deemed to be equal to the average
between the reported high and low or closing bid and asked prices of Common
Stock on the most recent date on which Common Stock was publicly traded. In the
event Common Stock is not publicly traded at the time a determination of its
value is required to be made hereunder, the determination of its fair market
value shall be made by the Committee in such manner as it deems appropriate.

     2.13  "Holder" means an Executive Officer who has been granted an Award.

     2.14  "Incentive Stock Option" means an incentive stock option within the
meaning of section 422(b) of the Code, commonly known as "qualified" stock
options.

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     2.15  "Nonqualified Stock Option" means an option granted under Section
VIII of the Plan to purchase Common Stock which does not constitute an Incentive
Stock Option.

     2.16  "Option" means an award granted under Section VIII of the Plan and
includes both Incentive Stock Options to purchase Common Stock and Nonqualified
Stock Options to purchase Common Stock.

     2.17  "Option Agreement" means a written agreement between the Company and
a Holder with respect to an Option.

     2.18  "Plan" means the MetroCorp Bancshares, Inc. Executive Bonus Plan, as
amended from time to time.

     2.19  "Return on Equity" means for any year the net income of the Company
as reflected on the Company's audited Statement of Income for such year divided
by the average amount of shareholder's equity outstanding during such year.
Return on Equity shall be expressed as a percentage to the second decimal point.

     2.20  "Rule 16b-3" means SEC Rule 16b-3 promulgated under the 1934 Act, as
such may be amended from time to time, and any successor rule, regulation or
statute fulfilling the same or a similar function.

                             III.  ADMINISTRATION

     3.1   The Committee shall be responsible for the administration of the
Plan.

     3.2   Subject to the provisions of the Plan, the Committee, by majority
action of its members, is authorized to interpret the Plan, prescribe, amend,
and rescind rules and regulations relating to the Plan, provide for conditions
and assurances deemed necessary or advisable to protect the interests of the
Company, and make all other determinations necessary or advisable for the
administration of the Plan. The determinations, interpretations, and other
actions of the Committee pursuant to the provisions of the Plan shall be binding
and conclusive for all purposes and on all persons.

     3.3   The Committee shall have sole authority, in its discretion, to
determine the type of Award to be granted and the number of Options or shares of
Common Stock which may be issued to each Executive Officer each year. In making
such determination, the Committee may take into account the Executive Officer's
contributions to the Company's performance.

                      IV.  SHARES AUTHORIZED FOR ISSUANCE

     4.1   Subject to Section IX, the aggregate number of shares of Common Stock
that may be issued under the Plan shall not exceed 50,000. The Common Stock
issued under this Plan shall be authorized and unissued or treasury shares of
Common Stock of the Company. Shares of

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Common Stock shall be deemed to have been issued under the Plan only to the
extent actually issued and delivered pursuant to an Award. To the extent that an
Award lapses or the rights of the Executive Officer to the Award terminate or
the Award is paid in cash, any shares of Common Stock subject to such Award
shall again be available for the grant of an Award. Separate stock certificates
shall be issued by the Company for those shares acquired pursuant the exercise
of an Incentive Stock Option and for those shares acquired pursuant to the
exercise of a Nonqualified Stock Option.

                         V.  ANNUAL BONUS; PROCEDURES

     5.1  For each of the five calendar years beginning with 2000 and ending
with 2004, up to an aggregate of 10,000 shares of Common Stock shall be issuable
to the Executive Officers collectively subject to Options or pursuant to awards
of Common Stock, subject to the following terms and conditions:

          (a)  For each calendar year, an aggregate of 10,000 shares of Common
     Stock is issuable pursuant to the grant of options or awards of Common
     Stock to the eligible Executive Officers collectively, but only in the
     event the Company shall have achieved a Return on Equity in excess of 13.0%
     for such calendar year.

          (b)  Return on Equity for any calendar year shall be determined by the
     independent public accounting firm of the Company after such firm has
     completed its audit of the Company's financial statements for such calendar
     year. The determination of such firm for any calendar year shall be final,
     binding and conclusive for all purposes.

          (c)  The total shares issuable to the Executive Officers as a group
     for any calendar year (as determined pursuant to subparagraph 5.1(c) above)
     shall be divided among such Executive Officers based on the determination
     of the Compensation Committee, in its sole discretion, of each individual's
     contributions to the Company's performance for that calendar year.

     5.2  Any shares of Common Stock issued to an Executive Officer pursuant to
the Plan for any calendar year shall be deemed to be fully paid and
nonassessable shares of Common Stock on the date of issuance.  Only whole shares
of Common Stock shall be issued; fractional shares shall be rounded up to the
nearest whole share.

                     VI.  EFFECTIVE DATE AND TERM OF PLAN

     6.1  The Plan shall become effective upon the date of its approval by the
Company's Board of Directors, subject to approval of the Plan by the Company's
shareholders within 12 months thereafter.

     6.2  The Plan shall be effective for five calendar years beginning in 2000
and ending in 2004.

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                               VII.  ELIGIBILITY

     7.1  Awards may be granted to Executive Officers once per calendar year in
accordance with the provisions set forth in Section V hereof. An Executive
Officer shall be eligible to participate in the Plan during a calendar year only
if the Executive Officer served in such position during the entire calendar year
and on December 31 of such calendar year. Subject to the limitations set forth
in the Plan, such Award may include an Incentive Stock Option, a Nonqualified
Stock Option, a stock award or any combination thereof.

                             VIII.  STOCK OPTIONS

     8.1  Option Period.  The term of each Option shall be as specified by
the Committee at the date of grant.

     8.2  Limitations on Exercise of Option.  An Option shall be exercisable
in whole or in such installments and at such times as determined by the
Committee.

     8.3  Special Limitations on Incentive Stock Options. To the extent that the
aggregate Fair Market Value (determined at the time the respective Incentive
Stock Option is granted) of Common Stock with respect to which Incentive Stock
Options are exercisable for the first time by an individual during any calendar
year under all incentive stock option plans of the Company and its parent and
subsidiary corporations exceeds $100,000, such Incentive Stock Options shall be
treated as Nonqualified Stock Options as determined by the Committee. The
Committee shall determine, in accordance with applicable provisions of the Code,
Treasury Regulations and other administrative pronouncements, which of an
optionee's Incentive Stock Options will not constitute Incentive Stock Options
because of such limitation and shall notify the optionee of such determination
as soon as practicable after such determination. No Incentive Stock Option shall
be granted to an individual if, at the time the Option is granted, such
individual owns stock possessing more than 10% of the total combined voting
power of all classes of stock of the Company or of its parent or subsidiary
corporation, within the meaning of section 422(b)(6) of the Code, unless (i) at
the time such Option is granted the option price is at least 110% of the Fair
Market Value of the Stock subject to the Option and (ii) such Option by its
terms is not exercisable after the expiration of five years from the date of
grant.

     8.4  Option Agreement.  Each Option shall be evidenced by an Option
Agreement in such form and containing such provisions not inconsistent with the
provisions of the Plan as the Committee from time to time shall approve,
including, without limitation, provisions to qualify an Incentive Stock Option
under section 422 of the Code.  An Option Agreement may provide for the payment
of the option price, in whole or in part, by the delivery of a number of shares
of Common Stock (plus cash if necessary) having a Fair Market Value equal to
such option price.  Each Option Agreement shall provide that the Option may not
be exercised earlier than six months from the date of grant and shall specify
the effect of termination of employment on the exercisability of the Option.
Moreover, an Option Agreement may provide for a "cashless exercise" of the
Option by establishing procedures whereby the Holder, by a properly-executed
written notice, directs (i) an immediate

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market sale or margin loan respecting all or a part of the shares of Common
Stock to which he is entitled upon exercise pursuant to an extension of credit
by the Company to the Holder of the option price, (ii) the delivery of the
shares of Stock from the Company directly to a brokerage firm and (iii) the
delivery of the option price from the sale or margin loan proceeds from the
brokerage firm directly to the Company. Such Option Agreement may also include,
without limitation, provisions relating to (i) vesting of Options, subject to
the provisions hereof accelerating such vesting on a Change of Control, (ii) tax
matters (including provisions (y) permitting the delivery of additional shares
of Common Stock or the withholding of shares of Common Stock from those acquired
upon exercise to satisfy federal or state income tax withholding requirements
and (z) dealing with any other applicable employee wage withholding
requirements), and (iii) any other matters not inconsistent with the terms and
provisions of this Plan that the Committee shall in its sole discretion
determine. The terms and conditions of the respective Option Agreements need not
be identical.

     8.5  Option Price and Payment. The price at which a share of Common Stock
may be purchased upon exercise of an Option shall be determined by the
Committee, but (i) such purchase price shall not be less than the Fair Market
Value of Stock subject to an Incentive Stock Option on the date the Incentive
Stock Option is granted and (ii) such purchase price shall be subject to
adjustment as provided in Section IX. The Option or portion thereof may be
exercised by delivery of an irrevocable notice of exercise to the Company. The
purchase price of the Option or portion thereof shall be paid in full in the
manner prescribed by the Committee.

     8.6  Shareholder Rights and Privileges. The Holder shall be entitled to all
the privileges and rights of a shareholder only with respect to such shares of
Common Stock as have been purchased under the Option and for which certificates
of stock have been registered in the Holder's name.

                   IX.   RECAPITALIZATION OR REORGANIZATION

     9.1  The shares with respect to which Awards may be granted are shares of
Common Stock as presently constituted, but if, and whenever, prior to the
expiration of an Award theretofore granted, the Company shall effect a
subdivision or consolidation by the Company, the number of shares of Common
Stock with respect to which such Award may thereafter be exercised or satisfied,
as applicable, (i) in the event of an increase in the number of outstanding
shares shall be proportionately increased, and the purchase price per share
shall be proportionately reduced, and (ii) in the event of a reduction in the
number of outstanding shares shall be proportionately reduced, and the purchase
price per share shall be proportionately increased.

     9.2  If the Company recapitalizes or otherwise changes its capital
structure, thereafter upon any exercise or satisfaction, as applicable, of an
Award theretofore granted the Holder shall be entitled to (or entitled to
purchase, if applicable) under such Award, in lieu of the number of shares of
Common Stock then covered by such Award, the number and class of shares of stock
and securities to which the Holder would have been entitled pursuant to the
terms of the recapitalization

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if, immediately prior to such recapitalization, the Holder had been the holder
of record of the number of shares of Common Stock then covered by such Award.

     9.3  In the event of a Change of Control, all outstanding Options shall
immediately vest and become exercisable or satisfiable, as applicable. Further,
in the event of a Change of Control, the Committee, in its discretion shall act
to effect one or more of the following alternatives with respect to outstanding
Options, which may vary among individual Holders and which may vary among
Options held by any individual Holder: (i) determine a limited period of time on
or before a specified date (before or after such Change of Control) after which
specified date all unexercised Options and all rights of Holders thereunder
shall terminate, (ii) require the mandatory surrender to the Company by selected
Holders of some or all of the outstanding Options held by such Holders
(irrespective of whether such Options are then exercisable under the provisions
of the Plan) as of a date, before or after such Change of Control, specified by
the Committee, in which event the Committee shall thereupon cancel such Options
and the Company shall pay to each Holder an amount of cash per share equal to
the excess, if any, of the Change of Control Value of the shares subject to such
Option over the exercise price(s) under such Options for such shares, (iii) make
such adjustments to Options then outstanding as the Committee deems appropriate
to reflect such Change of Control (provided, however, that the Committee may
determine in its sole discretion that no adjustment is necessary to Options then
outstanding) or (iv) provide that thereafter upon any exercise of an Option
theretofore granted the Holder shall be entitled to purchase under such Option,
in lieu of the number of shares of Common Stock then covered by such Option the
number and class of shares of stock or other securities or property (including,
without limitation, cash) to which the Holder would have been entitled pursuant
to the terms of the agreement of merger, consolidation or sale of assets and
dissolution if, immediately prior to such merger, consolidation or sale of
assets and dissolution the Holder has been the holder of record of the number of
shares of Common Stock then covered by such Option. The provisions contained in
this paragraph shall be inapplicable to an Award granted within six (6) months
before the occurrence of a Change of Control if the Holder of such Award is
subject to the reporting requirements of Section 16(a) of the 1934 Act. The
provisions contained in this paragraph shall not terminate any rights of the
Holder to further payments pursuant to any other agreement with the Company
following a Change of Control.

     9.4  In the event of changes in the outstanding Common Stock by reason of
recapitalization, reorganizations, mergers, consolidations, combinations,
exchanges or other relevant changes in capitalization occurring after the date
of the grant of any Option and not otherwise provided for by this Section IX,
any outstanding Options and any agreements evidencing such Options shall be
subject to adjustment by the Committee at its discretion as to the number and
price of shares of Common Stock or other consideration subject to such Options.
In the event of any such change in the outstanding Common Stock, the aggregate
number of shares available under the Plan may be appropriately adjusted by the
Committee, whose determination shall be conclusive.

     9.5  The existence of the Plan and the Awards granted hereunder shall not
affect in any way the right or power of the Board or the shareholders of the
Company to make or authorize any adjustment, recapitalization, reorganization or
other change in the Company's capital structure or its business, any merger or
consolidation of the Company, any issue of debt or equity securities ahead

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of or affecting Stock or the rights thereof, the dissolution or liquidation of
the Company or any sale, lease, exchange or other disposition of all or any part
of its assets or business or any other corporate act or proceeding.

     9.6  Any adjustment provided for in Section 9.1 through 9.4 inclusive shall
be subject to any required shareholder action.

     9.7  Except as hereinbefore expressly provided, the issuance by the Company
of shares of stock of any class or securities convertible into shares of stock
of any class, for cash, property, labor or services, upon direct sale, upon the
exercise of rights or warrants to subscribe therefor, or upon conversion of
shares of obligations of the Company convertible into such shares or other
securities, and in any case whether or not for fair value, shall not affect, and
no adjustment by reason thereof shall be made with respect to, the number of
shares of Stock subject to Awards theretofore granted or the purchase price per
share, if applicable.

                   X. AMENDMENT AND TERMINATION OF THE PLAN

     The Board in its discretion may terminate the Plan at any time with respect
to any shares for which Awards have not theretofore been granted. The Board
shall have the right to alter or amend the Plan or any part thereof from time to
time; provided that no change in any Option theretofore granted may be made
which would impair the rights of the Holder without the consent of the Holder
(unless such change is required in order to cause the benefits under the Plan to
qualify as performance-based compensation within the meaning of section 162(m)
of the Code and applicable interpretive authority thereunder), and provided,
further, that the Board may not, without approval of the shareholders, amend the
Plan:

          (a)  to increase the maximum number of shares which may be issued on
     exercise or surrender of an Option, except as provided in Section IX;

          (b)  to change the Option price;

          (c)  to change the individuals eligible to receive Awards or
     materially increase the benefits accruing to the Executive Officers under
     the Plan;

          (d)  to extend the maximum period during which Awards may be granted
     under the Plan;

          (e)  to modify materially the requirements as to eligibility for
     participation in the Plan; or

          (f)  to decrease any authority granted to the Committee hereunder in
     contravention of Rule 16b-3.

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                XI. TRANSFER RESTRICTIONS; INTENTION TO COMPLY
                        WITH APPLICABLE SECURITIES LAWS

     11.1  Any shares of Common Stock issued pursuant to the Plan may not be
resold for a period of six months following the issuance of such shares of
Common Stock, or such longer period as may be required to comply with federal or
state securities laws.

     11.2  It is intended that the Plan and any award of Common Stock made to an
Executive Officer pursuant to the Plan meet all of the requirements of Rule 16b-
3 of the Securities Exchange Act of 1934, as amended. If any provision of the
Plan or any such award of Common Stock would disqualify the Plan or the award of
Common Stock hereunder, or would otherwise not comply with Rule16b-3, such
provision or award of Common Stock shall be construed or deemed amended to
conform to Rule 16b-3.

     11.3  All transactions pursuant to the terms of the Plan shall only be
effective at such time as counsel to the Company shall have determined that such
transaction will not violate federal or state securities or other laws. The
Committee may, in its sole discretion, defer the effectiveness of such
transaction to pursue whatever actions may be required to ensure compliance with
such federal or state securities or other laws.

     11.4  All certificates for shares of Common Stock delivered under the Plan
shall be subject to such stock transfer orders and other restrictions as the
Company may deem advisable under the rules, regulations and other requirements
of the Company, any stock exchange upon which the Common Stock is then listed
and any applicable federal or state securities laws, and the Company may cause a
legend or legends to be put on any such certificates to make appropriate
reference to such restrictions.

                            XII. WITHHOLDING TAXES

     12.1  Whenever the Company issues shares of Common Stock under the Plan,
the Company shall have the right to require the Executive Officer to remit to
the Company an amount sufficient to satisfy any federal, state and/or local
withholding tax requirements prior to the delivery of any certificate or
certificates for such shares. Alternatively, at the Company's discretion, the
Company may issue only such number of shares of Common Stock net of the number
of shares sufficient to satisfy the withholding tax requirements. For
withholding tax purposes, the shares of Common Stock shall be valued at their
Fair Market Value on the date the withholding obligation is incurred.

                             XIII.  MISCELLANEOUS

     13.1  This Plan shall be construed in accordance with the laws of the
State of Texas.

     13.2  No Right to An Award. Neither the adoption of the Plan by the Company
nor any action of the Board or the Committee shall be deemed to give an
Executive Officer any right to be granted an Award to purchase Common Stock, an
Award to receive shares of Common Stock or any

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of the rights hereunder except as may be evidenced by an Award or by an Option
Agreement on behalf of the Company, and then only to the extent and on the terms
and conditions expressly set forth therein. The Plan shall be unfunded. The
Company shall not be required to establish any special or separate fund or to
make any other segregation of funds or assets to assure the payment of any
Award.

     13.3  Restrictions on Transfer. An Option shall not be transferable
otherwise than by will or the laws of descent and distribution or pursuant to a
"qualified domestic relations order" as defined by the Code or Title I of the
Employee Retirement Income Security Act of 1974, as amended, or the rules
thereunder, and shall be exercisable during the Holder's lifetime only by such
Holder or the Holder's guardian or legal representative.

                                      -10-<PAGE>

                                                                    EXHIBIT 10.2

                                 ADDENDUM NO. 4
                            TO MASTER LEASE AGREEMENT
                         DATED AS OF SEPTEMBER 19, 1996

THIS ADDENDUM (this "Addendum") amends and supplements the above referenced
lease (the "Lease"), between General Electric Capital Corporation ("Lessor") and
Millennium Pharmaceuticals, Inc. ("Lessee") and is hereby incorporated into the
Lease as though fully set forth therein. Capitalized terms not otherwise defined
herein shall have the meanings set forth in the Lease.

Solely to the extent relating to Schedules executed an delivered from and after
the date hereof, the Lease is hereby amended by inserting the following Section
XXI therein.

      "XXI.  ADDITIONAL COVENANTS.

            (a) At all times during the term of the Lease, Lessee shall
      maintain, on a consolidated basis, unrestricted cash, cash equivalents and
      marketable securities of at least $50,000,000. In the event Lessee at any
      time fails to maintain unrestricted cash, cash equivalent and marketable
      securities in the amounts required above, within fifteen (15) days after
      Lessee ceases to satisfy such requirement, Lessee shall cause to be
      delivered to Lessor an irrevocable standby letter of credit as described
      in Section XXI(c) below. Unrestricted cash, cash equivalents and
      marketable securities shall be defined as being net of any non-GE Capital
      contingent liabilities associated with other lease or loan cash triggers,
      pledge agreements, etc. Except as defined herein, accounting terms used
      herein shall be as defined, and all calculations hereunder shall be made,
      in accordance with GAAP.

            (b) If Lessee's unrestricted cash, cash equivalents and marketable
      securities shall ever total $400,000,000 or less, Lessee's chief financial
      officer or Treasurer shall notify Lessor of the amount of Lessee's
      consolidated unrestricted cash, cash equivalents and marketable securities
      and shall certify that such amounts are in compliance with the
      requirements of Section XXI(a) above, such notification and certification
      shall be provided within fifteen (15) days after the end of each month,
      reflecting such information as of the end of the month immediately
      preceding such notice. If Lessee fails timely to provide such notification
      and compliance certificates, within fifteen (15) days after such failure,
      Lessee shall cause to be delivered to Lessor an irrevocable standby letter
      of credit as described in Section XXI(c) below. A failure by Lessee to
      provide such Letter of Credit or otherwise comply with this Section XXI
      shall be a default hereunder.

            (c) The irrevocable standby letter of credit provided pursuant to
      this addendum shall be (i) in the amount of the then Stipulated Loss Value
      of all of the Schedules, (ii) issued by a bank which is acceptable to
      Lessor in its sole discretion, (iii) in the form attached as Exhibit A or
      as may be acceptable to Lessor in its sole discretion, and (iv) for an
      initial term of one (1) year with automatic annual renewals thereafter
      (without amendment except for extension of the then current expiration
      date by an additional year) until Lessee has received written notice from
      Lessor to the effect that the Letter of credit is being released in its
      entirety. Lessee shall also execute a Letter of Credit Agreement in the
      form attached as Exhibit B."

The parties agree that the amendment set forth in paragraph 1 of Addendum No. 1
shall not be applicable to Schedules executed and delivered after the date
hereof. Except as expressly modified hereby, all terms and provisions of the
Lease shall remain in full force and effect. This Addendum is not binding nor

<PAGE>

effective with respect to the Lease or the Equipment until executed on behalf of
Lessor and Lessee by authorized representatives of Lessor and Lessee.

IN WITNESS WHEREOF, Lessee and Lessor have caused this Addendum to be executed
by their duly authorized representatives as of this 28 day of February, 2001

LESSOR:                                   LESSEE:

GENERAL ELECTRIC CAPITAL CORPORATION      MILLENNIUM PHARMACEUTICALS, INC.

By: /s/ RICHARD DAUPHINAIS                By: /s/ DAVID N. CORDO
Name:  Richard Dauphinais                 Name:  David N. Cordo
Title: Senior Transaction Mgr.            Title: Treasurer

                                          Attest:

                                          By: /s/ NICHOLE REIBLEIN

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