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                               LUMINEX CORPORATION


                                       AND


                          MELLON INVESTOR SERVICES LLC,

                                  RIGHTS AGENT


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                                RIGHTS AGREEMENT

                            DATED AS OF JUNE 20, 2001






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                                TABLE OF CONTENTS



                                                                                                           
Section 1.        Certain Definitions.............................................................................1


Section 2.        Appointment of Rights Agent.....................................................................7


Section 3.        Issue of Rights Certificates....................................................................7


Section 4.        Form of Rights Certificates.....................................................................9


Section 5.        Countersignature and Registration..............................................................10


Section 6.        Transfer, Split-Up, Combination and Exchange of Rights
                  Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates.........................10


Section 7.        Exercise of Rights; Purchase Price.............................................................11


Section 8.        Cancellation and Destruction of Rights Certificates............................................13


Section 9.        Reservation and Availability of Capital Stock..................................................13


Section 10.       Preferred Stock Record Date....................................................................15


Section 11.       Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights....................15


Section 12.       Certificate of Adjusted Purchase Price or Number of Shares.....................................22


Section 13.       Consolidation, Merger or Sale or Transfer of Assets, Cash Flow or Earning Power................22


Section 14.       Fractional Rights and Fractional Shares........................................................25


Section 15.       Rights of Action...............................................................................26


Section 16.       Agreement of Rights Holders....................................................................26


Section 17.       Rights Certificate Holder Not Deemed a Stockholder.............................................27


Section 18.       Concerning the Rights Agent....................................................................27


Section 19.       Merger or Consolidation or Change of Name of Rights Agent......................................28


Section 20.       Duties of Rights Agent.........................................................................29


Section 21.       Change of Rights Agent.........................................................................31


Section 22.       Issuance of New Rights Certificates............................................................31


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Section 23.       Redemption and Termination.....................................................................32


Section 24.       Exchange.......................................................................................33


Section 25.       Notice of Certain Events.......................................................................34


Section 26.       Notices........................................................................................34


Section 27.       Supplements and Amendments.....................................................................35


Section 28.       Successors.....................................................................................36


Section 29.       Determinations and Actions by the Board of Directors, etc......................................36


Section 30.       Benefits of this Agreement.....................................................................36


Section 31.       Severability...................................................................................37


Section 32.       Governing Law..................................................................................37


Section 33.       Counterparts...................................................................................37


Section 34.       Descriptive Headings...........................................................................37




Exhibit  A -      Form of Certificate of Designations of Series A Junior
                  Participating Preferred Stock

Exhibit  B -      Form of Rights Certificate

Exhibit  C -      Summary of Rights



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                                RIGHTS AGREEMENT

         This Rights Agreement, dated as of June 20, 2001 (the "Agreement"),
between Luminex Corporation, a Delaware corporation (the "Company"), and Mellon
Investor Services LLC, a New Jersey limited liability company (the "Rights
Agent").

                                   WITNESSETH:

         WHEREAS, on June 20, 2001 (the "Rights Dividend Declaration Date"), the
Board of Directors of the Company authorized and declared a dividend of one
Right for each share of common stock, par value $.001 per share, of the Company
(the "Common Stock") outstanding at the close of business on July 2, 2001 (the
"Record Date"), and has authorized the issuance of one Right (as such number may
hereinafter be adjusted pursuant to the provisions of Section 11(p) hereof) for
each share of Common Stock of the Company issued (whether originally issued or
delivered from the Company's treasury) between the Record Date and the earlier
of the Distribution Date (as hereinafter defined) and the Expiration Date (as
hereinafter defined), and, in certain circumstances provided for in Section 22
hereof, after the Distribution Date, each Right initially representing the right
to purchase one Fractional Share (as hereinafter defined) of Series A Junior
Participating Preferred Stock of the Company, upon the terms and subject to the
conditions hereinafter set forth (the "Rights");

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth, the parties hereby agree as follows:

         Section 1. Certain Definitions. For purposes of this Agreement, the
following terms shall have the meanings indicated:

         "Acquiring Person" shall mean any Person who or which, together with
all Affiliates and Associates of such Person, shall be the Beneficial Owner of
20% or more of the shares of Common Stock then outstanding, but shall not
include any Exempt Person; provided, however, that a Person shall not be or
become an Acquiring Person if such Person, together with its Affiliates and
Associates, shall become the Beneficial Owner of 20% or more of the shares of
Common Stock then outstanding solely as a result of a reduction in the number of
shares of Common Stock outstanding due to the repurchase of Common Stock by the
Company, unless and until such time as such Person together with its Affiliates
and Associates shall purchase or otherwise become the Beneficial Owner of
additional shares of Common Stock constituting 1% or more of the then
outstanding shares of Common Stock or any other Person (or Persons) who is (or
collectively are) the Beneficial Owner of shares of Common Stock constituting 1%
or more of the then outstanding shares of Common Stock shall become an Affiliate
or Associate of such Person, unless, in either such case, such Person, together
with all Affiliates and Associates of such Person, is not then the Beneficial
Owner of 20% or more of the shares of Common Stock then outstanding; and
provided, further, that if the Board of Directors, with the concurrence of a
majority of the members of the Board of Directors who are not, and are not
representatives, nominees, Affiliates or Associates of, such Person or an
Acquiring Person, determines in good faith that a Person that would otherwise be
an "Acquiring Person" has become such inadvertently (including, without
limitation, because (i) such Person was unaware that it beneficially owned a
percentage of Common Stock that would otherwise cause such Person to be an
"Acquiring Person" or (ii) such Person was aware of the extent of its Beneficial
Ownership of Common





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Stock but had no actual knowledge of the consequences of such Beneficial
Ownership under this Agreement) and without any intention of changing or
influencing control of the Company, and if such Person as promptly as
practicable divested or divests itself of Beneficial Ownership of a sufficient
number of shares of Common Stock so that such Person would no longer be an
"Acquiring Person," then such Person shall not be deemed to be or to have become
an "Acquiring Person" for any purposes of this Agreement.

         At any time that the Rights are redeemable, the Board of Directors may,
generally or with respect to any specified Person or Persons, determine to
increase to a specified percentage or amount greater than that set forth herein
or decrease to a specified percentage or amount lower than that set forth herein
or determine a number of shares to be (but in no event less than or equal to the
percentage or number of shares of Common Stock then beneficially owned by such
Person), the level of Beneficial Ownership of Common Stock at which a Person or
such Person or Persons becomes an Acquiring Person.

         "Adjustment Shares" shall have the meaning set forth in Section
11(a)(ii) hereof.

         "Affiliate" shall have the meaning ascribed to such term in Rule 12b-2
of the General Rules and Regulations under the Exchange Act, as in effect on the
date of this Agreement.

         "Associate" shall mean, with reference to any Person, (1) any
corporation, firm, partnership, association, unincorporated organization or
other entity (other than the Company or a Subsidiary of the Company) of which
such Person is an officer or general partner (or officer or general partner of a
general partner) or is, directly or indirectly, the Beneficial Owner of 10% or
more of any class of equity securities, (2) any trust or other estate in which
such Person has a substantial beneficial interest or as to which such Person
serves as trustee or in a similar fiduciary capacity and (3) any relative or
spouse of such Person, or any relative of such spouse, who has the same home as
such Person.

         A Person shall be deemed the "Beneficial Owner" of, and shall be deemed
to "beneficially own," any securities:

         (i) that such Person or any of such Person's Affiliates or Associates,
     directly or indirectly, is the "beneficial owner" of (as determined
     pursuant to Rule 13d-3 of the General Rules and Regulations under the
     Exchange Act as in effect on the date of this Agreement) or otherwise has
     the right to vote or dispose of, including pursuant to any agreement,
     arrangement or understanding (whether or not in writing); provided,
     however, that a Person shall not be deemed the "Beneficial Owner" of, or to
     "beneficially own," any security under this subparagraph (i) as a result of
     an agreement, arrangement or understanding to vote such security if such
     agreement, arrangement or understanding: (A) arises solely from a revocable
     proxy or consent given in response to a public (i.e., not including a
     solicitation exempted by Rule 14a-2(b)(2) of the General Rules and
     Regulations under the Exchange Act as in effect on the date of this
     Agreement) proxy or consent solicitation made pursuant to, and in
     accordance with, the applicable provisions of the General Rules and
     Regulations under the Exchange Act, (B) is not then reportable by such
     Person on Schedule 13D under the Exchange Act (or any comparable or
     successor report) and (C) does not constitute a trust, proxy, power of
     attorney or other





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     device with the purpose or effect of allowing two or more persons, acting
     in concert, to avoid being deemed "beneficial owners" of such security or
     otherwise avoid the status of "Acquiring Person" under the terms of this
     Agreement or as part of a plan or scheme to evade the reporting
     requirements under Schedule 13D or Sections 13(d) or 13(g) of the Exchange
     Act;

         (ii) that such Person or any of such Person's Affiliates or Associates,
     directly or indirectly, has the right or obligation to acquire (whether
     such right or obligation is exercisable or effective immediately or only
     after the passage of time or the occurrence of an event) pursuant to any
     agreement, arrangement or understanding (whether or not in writing) or upon
     the exercise of conversion rights, exchange rights, other rights, warrants
     or options, or otherwise; provided, however, that a Person shall not be
     deemed the "Beneficial Owner" of, or to "beneficially own," (A) securities
     tendered pursuant to a tender or exchange offer made by such Person or any
     of such Person's Affiliates or Associates until such tendered securities
     are accepted for purchase or exchange, (B) securities issuable upon
     exercise of Rights at any time prior to the occurrence of a Triggering
     Event, or (C) securities issuable upon exercise of Rights from and after
     the occurrence of a Triggering Event which Rights were acquired by such
     Person or any of such Person's Affiliates or Associates prior to the
     Distribution Date or pursuant to Section 3(a) or Section 22 hereof (the
     "Original Rights") or pursuant to Section 11(i) or (p) hereof in connection
     with an adjustment made with respect to any Original Rights; or

         (iii) that are beneficially owned, directly or indirectly, by (A) any
     other Person (or any Affiliate or Associate thereof) with which such Person
     or any of such Person's Affiliates or Associates has any agreement,
     arrangement or understanding (whether or not in writing) for the purpose of
     acquiring, holding, voting (except pursuant to a revocable proxy or consent
     as described in the proviso to subparagraph (i) of this definition) or
     disposing of any voting securities of the Company or (B) any group (as that
     term is used in Rule 13d-5(b) of the General Rules and Regulations under
     the Exchange Act, as in effect on the date of this Agreement) of which such
     Person is a member;

provided, however, that nothing in this definition shall cause a Person engaged
in business as an underwriter of securities to be the "Beneficial Owner" of, or
to "beneficially own," any securities acquired through such Person's
participation in good faith in a firm commitment underwriting (including,
without limitation, securities acquired pursuant to stabilizing transactions to
facilitate a public offering in accordance with Regulation M promulgated under
the Exchange Act, or to cover overallotments created in connection with a public
offering) until the expiration of forty days after the date of such acquisition.
For purposes of this Agreement, "voting" a security shall include voting,
granting a proxy, acting by consent, making a request or demand relating to
corporate action (including, without limitation, calling a stockholder meeting),
entering into a voting trust or voting agreement or otherwise giving an
authorization (within the meaning of Section 14(a) of the Exchange Act, as in
effect on the date of this Agreement) in respect of such security.

         "Business Day" shall mean any day other than a Saturday, Sunday or a
day on which banking institutions in the State of Texas or the State of New
Jersey are authorized or obligated by law or executive order to close.




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         "Close of business" on any given date shall mean 5:00 p.m., central
standard time, on such date; provided, however, that if such date is not a
Business Day, it shall mean 5:00 p.m., central standard time, on the next
succeeding Business Day.

         "Closing Price" of a security for any day shall mean the last sales
price, regular way, on such day or, in case no such sale takes place on such
day, the average of the closing bid and asked prices, regular way, on such day,
in either case as reported in the principal transaction reporting system with
respect to securities listed or admitted to trading on the New York Stock
Exchange, or, if such security is not listed or admitted to trading on the New
York Stock Exchange, on the principal national securities exchange on which such
security is listed or admitted to trading, or, if such security is not listed or
admitted to trading on any national securities exchange but sales price
information is reported for such security, as reported by NASDAQ or such other
self-regulatory organization or registered securities information processor (as
such terms are used under the Exchange Act) that then reports information
concerning such security, or, if sales price information is not so reported, the
average of the high bid and low asked prices in the over-the-counter market on
such day, as reported by NASDAQ or such other entity, or, if on such day such
security is not quoted by any such entity, the average of the closing bid and
asked prices as furnished by a professional market maker making a market in such
security selected by the Board of Directors of the Company. If on such day no
market maker is making a market in such security, the fair value of such
security on such day as determined in good faith by the Board of Directors of
the Company shall be used.

         "Common Stock" shall mean the common stock, par value $.001 per share,
of the Company, except that "Common Stock" when used with reference to equity
interests issued by any Person other than the Company shall mean the capital
stock of such Person with the greatest voting power, or the equity securities or
other equity interest having power to control or direct the management, of such
Person.

         "Common Stock Equivalents" shall have the meaning set forth in Section
11(a)(iii) hereof.

         "Company" shall mean the Person named as the "Company" in the preamble
of this Agreement until a successor Person shall have become such or until a
Principal Party shall assume, and thereafter be liable for, all obligations and
duties of the Company hereunder, pursuant to the applicable provisions of this
Agreement, and thereafter "Company" shall mean such successor Person or
Principal Party.

         "Current Market Price" shall have the meaning set forth in Section
11(d) hereof.

         "Current Value" shall have the meaning set forth in Section 11(a)(iii)
hereof.

         "Distribution Date" shall mean the earlier of (i) the close of business
on the tenth day (or, if such Stock Acquisition Date results from the
consummation of a Permitted Offer, such later date as may be determined by the
Company's Board of Directors as set forth below before the Distribution Date
occurs) after the Stock Acquisition Date (or, if the tenth day after the Stock
Acquisition Date occurs before the Record Date, the close of business on the
Record Date) or (ii) the close of business on the tenth Business Day (or such
later date as may be determined by the Company's Board of Directors as set forth
below before the Distribution Date occurs) after the




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date that a tender offer or exchange offer by any Person (other than any Exempt
Person) is first published or sent or given within the meaning of Rule 14d-2(a)
of the General Rules and Regulations under the Exchange Act as then in effect,
if upon consummation thereof, such Person would be an Acquiring Person, other
than a tender or exchange offer that is determined before the Distribution Date
occurs to be a Permitted Offer. The Board of Directors of the Company may, to
the extent set forth in the preceding sentence, defer the date set forth in
clause (i) or (ii) of the preceding sentence to a specified later date or to an
unspecified later date to be determined by a subsequent action or event (but in
no event to a date later than the close of business on the tenth day after the
first occurrence of a Triggering Event).

         "Equivalent Preferred Stock" shall have the meaning set forth in
Section 11(b) hereof.

         "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

         "Exchange Ratio" shall have the meaning set forth in Section 24 hereof.

         "Exempt Person" shall mean the Company, any Subsidiary of the Company,
any employee benefit plan of the Company or of any Subsidiary of the Company,
and any Person organized, appointed or established by the Company for or
pursuant to the terms of any such plan or for the purpose of funding any such
plan or funding other employee benefits for employees of the Company or any
Subsidiary of the Company.

         "Expiration Date" shall mean the earliest of (i) the Final Expiration
Date, (ii) the time at which the Rights are redeemed as provided in Section 23
hereof, (iii) the time at which the Rights expire pursuant to Section 13(d)
hereof and (iv) the time at which all Rights then outstanding and exercisable
are exchanged pursuant to Section 24 hereof.

         "Final Expiration Date" shall mean the close of business on June 20,
2011.

         "Flip-In Event" shall mean an event described in Section 11(a)(ii)
hereof.

         "Flip-In Trigger Date" shall have the meaning set forth in Section
11(a)(iii) hereof.

         "Flip-Over Event" shall mean any event described in clause (x), (y) or
(z) of Section 13(a) hereof, but excluding any transaction described in Section
13(d) hereof that causes the Rights to expire.

         "Fractional Share" with respect to the Preferred Stock shall mean one
one-hundredth of a share of Preferred Stock.

         "NASDAQ" shall mean the National Association of Securities Dealers,
Inc. Automated Quotations System.

         "Original Rights" shall have the meaning set forth in the definition of
"Beneficial Owner."



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         "Permitted Offer" shall mean a tender offer or an exchange offer for
all outstanding shares of Common Stock at a price and on terms determined, prior
to the time the Person making the offer or any Affiliate or Associate thereof is
an Acquiring Person, by at least a majority of the members of the Board of
Directors who are not officers or employees of the Company and who are not, and
are not representatives, nominees, Affiliates or Associates of, an Acquiring
Person or the person making the offer, after receiving advice from one or more
investment banking firms, to be (a) at a price and on terms that are fair to
stockholders (taking into account all factors that such members of the Board
deem relevant including, without limitation, prices that could reasonably be
achieved if the Company or its assets were sold on an orderly basis designed to
realize maximum value) and (b) otherwise in the best interests of the Company
and its stockholders.

         "Person" shall mean any individual, firm, corporation, partnership,
limited liability company, joint venture, association, trust, unincorporated
organization or other entity or any group of Persons acting in concert, and
shall include any successor (by merger or otherwise) of such entity.

         "Preferred Stock" shall mean shares of Series A Junior Participating
Preferred Stock, par value $.001 per share, of the Company having the rights,
powers and preferences set forth in the form of Certificate of Designations
attached hereto as Exhibit A and, to the extent that there is not a sufficient
number of shares of Series A Junior Participating Preferred Stock authorized to
permit the full exercise of the Rights, any other series of Preferred Stock, par
value $.001 per share, of the Company designated for such purpose containing
terms substantially similar to the terms of the Series A Junior Participating
Preferred Stock.

         "Principal Party" shall have the meaning set forth in Section 13(b)
hereof.

         "Purchase Price" shall have the meaning set forth in Section 4(a)
hereof.

         "Record Date" shall have the meaning set forth in the recitals clause
at the beginning of this Agreement.

         "Redemption Price" shall have the meaning set forth in Section 23(a)
hereof.

         "Rights" shall have the meaning set forth in the recitals clause at the
beginning of this Agreement.

         "Rights Agent" shall mean the Person named as the "Rights Agent" in the
preamble of this Agreement until a successor Rights Agent shall have become such
pursuant to the applicable provisions hereof, and thereafter "Rights Agent"
shall mean such successor Rights Agent. If at any time there is more than one
Person appointed by the Company as Rights Agent pursuant to the applicable
provisions of this Agreement, "Rights Agent" shall mean and include each such
Person.

         "Rights Certificates" shall mean the certificates evidencing the
Rights.

         "Rights Dividend Declaration Date" shall have the meaning set forth in
the recitals clause at the beginning of this Agreement.




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         "Securities Act" shall mean the Securities Act of 1933, as amended.

         "Spread" shall have the meaning set forth in Section 11(a)(iii) hereof.

         "Stock Acquisition Date" shall mean the first date of public
announcement (which, for purposes of this definition and Section 23, shall
include, without limitation, a report filed pursuant to Section 13(d) of the
Exchange Act) by the Company or an Acquiring Person that an Acquiring Person has
become such.

         "Subsidiary" shall mean, with reference to any Person, any corporation
or other Person of which an amount of voting securities sufficient to elect at
least a majority of the directors or other persons performing similar functions
is beneficially owned, directly or indirectly, by such Person, or otherwise
controlled by such Person.

         "Substitution Period" shall have the meaning set forth in Section
11(a)(iii) hereof.

         "Summary of Rights" shall mean the Summary of Rights sent pursuant to
Section 3(b) hereof.

         "Trading Day" with respect to a security shall mean a day on which the
principal national securities exchange on which such security is listed or
admitted to trading is open for the transaction of business, or, if such
security is not listed or admitted to trading on any national securities
exchange but is quoted by NASDAQ, a day on which NASDAQ reports trades, or, if
such security is not so quoted, a Business Day.

         "Triggering Event" shall mean any Flip-In Event or any Flip-Over Event.

         Section 2. Appointment of Rights Agent. The Company hereby appoints the
Rights Agent (i) to act as agent for the Company and (ii) in its capacity as
agent for the Company, to take certain actions in respect of the holders of the
Rights as expressly set forth herein (who, in accordance with Section 3 hereof,
shall prior to the Distribution Date also be the holders of the Common Stock)
(although it is expressly agreed that the Rights Agent shall not act as agent
for such holders) in accordance with the terms and conditions hereof, and the
Rights Agent hereby accepts such appointment. The Company may from time to time
appoint such Co-Rights Agents as it may deem necessary or desirable. The Rights
Agent shall have no duty to supervise, and in no event shall be liable for, the
acts or omissions of any such Co-Rights Agent.

         Section 3. Issue of Rights Certificates.

         (a) Until the Distribution Date, (x) the Rights will be evidenced
(subject to the provisions of paragraph (b) of this Section 3) by the
certificates for Common Stock registered in the names of the holders of the
Common Stock and not by separate certificates, and (y) the Rights will be
transferable only in connection with the transfer of the underlying shares of
Common Stock (including a transfer to the Company). As soon as practicable after
the Distribution Date, the Company shall promptly notify in writing the Rights
Agent of the occurrence thereof and, if the Rights Agent is not then also the
transfer agent and registrar for the Common Stock, provide the Rights Agent with
the names and addresses of all record holders of



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Common Stock (together with all other necessary information), and the Rights
Agent will send by first-class, insured, postage prepaid mail, to each record
holder of the Common Stock as of the close of business on the Distribution Date
(other than any Person referred to in the first sentence of Section 7(e)), at
the address of such holder shown on the records of the Company, one or more
Rights Certificates, evidencing one Right for each share of Common Stock so
held, subject to adjustment as provided herein. In the event that an adjustment
in the number of Rights per share of Common Stock has been made pursuant to
Section 11(p) hereof, at the time of distribution of the Rights Certificates,
the Company shall make the necessary and appropriate rounding adjustments (in
accordance with Section 14(a) hereof) so that Rights Certificates representing
only whole numbers of Rights are distributed and cash is paid in lieu of any
fractional Rights. As of and after the Distribution Date, the Rights will be
evidenced solely by such Rights Certificates.

         (b) As promptly as practicable following the Record Date, the Company
will send a copy of a Summary of Rights, in substantially the form attached
hereto as Exhibit C, by first-class, postage prepaid mail, to each record holder
of Common Stock as of the close of business on the Record Date, at the address
of such holder shown on the records of the Company. With respect to certificates
for Common Stock outstanding as of the Record Date, until the Distribution Date
or the earlier surrender for transfer thereof or the Expiration Date, the Rights
associated with the shares of Common Stock represented by such certificates
shall be evidenced by such certificates for Common Stock together with the
Summary of Rights, and the registered holders of the Common Stock shall also be
the registered holders of the associated Rights. Until the earlier of the
Distribution Date or the Expiration Date, the transfer of any of the
certificates for Common Stock outstanding on the Record Date, with or without a
copy of the Summary of Rights, shall also constitute the transfer of the Rights
associated with the Common Stock represented by such certificates.

         (c) Rights shall be issued in respect of all shares of Common Stock
that are issued (whether originally issued or delivered from the Company's
treasury) after the Record Date but prior to the earlier of the Distribution
Date or the Expiration Date or, in certain circumstances provided in Section 22
hereof, after the Distribution Date. Certificates issued representing such
shares of Common Stock that shall so become outstanding or shall be transferred
or exchanged after the Record Date but prior to the earlier of the Distribution
Date or the Expiration Date shall also be deemed to be certificates for Rights,
and shall substantially bear the following legend:

         This certificate also evidences and entitles the holder hereof to
     certain Rights as set forth in the Rights Agreement between Luminex
     Corporation (the "Company") and Mellon Investor Services LLC (the "Rights
     Agent") dated as of June 20, 2001, as it may from time to time be
     supplemented or amended (the "Rights Agreement"), the terms of which are
     hereby incorporated herein by reference and a copy of which is on file at
     the principal offices of the Company. Under certain circumstances, as set
     forth in the Rights Agreement, such Rights may be redeemed, may be
     exchanged, may expire or may be evidenced by separate certificates and will
     no longer be evidenced by this certificate. The Company will mail to the
     holder of this certificate a copy of the Rights Agreement, as in effect on
     the date of mailing, without charge promptly after receipt of a written
     request therefor. UNDER CERTAIN CIRCUMSTANCES SET FORTH IN





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     THE RIGHTS AGREEMENT, RIGHTS BENEFICIALLY OWNED BY OR TRANSFERRED TO ANY
     PERSON WHO IS, WAS OR BECOMES AN ACQUIRING PERSON OR AN AFFILIATE OR
     ASSOCIATE THEREOF (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT), AND
     CERTAIN TRANSFEREES THEREOF, WILL BECOME NULL AND VOID AND WILL NO LONGER
     BE TRANSFERABLE.

With respect to such certificates containing the foregoing legend, until the
earlier of the Distribution Date or the Expiration Date, the Rights associated
with the Common Stock represented by such certificates shall be evidenced by
such certificates alone, and registered holders of Common Stock shall also be
the registered holders of the associated Rights, and the transfer of any of such
certificates shall also constitute the transfer of the Rights associated with
the Common Stock represented by such certificates.

         Section 4. Form of Rights Certificates.

         (a) The Rights Certificates (and the forms of election to purchase and
of assignment to be printed on the reverse thereof), when, as and if issued,
shall be substantially in the form set forth in Exhibit B hereto and may have
such marks of identification or designation and such legends, summaries or
endorsements printed thereon as the Company may deem appropriate, provided that
such marks, legends, summaries and endorsements do not affect the rights, duties
or responsibilities of the Rights Agent, and as are not inconsistent with the
provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange or quotation system on which the Rights
may from time to time be listed or quoted, or to conform to usage. Subject to
the provisions of Section 11 and Section 22 hereof, the Rights Certificates,
whenever issued, shall be dated as of the Record Date and on their face shall
entitle the holders thereof to purchase such number of Fractional Shares of
Preferred Stock as shall be set forth therein at the price set forth therein
(such exercise price per Fractional Share (or, as set forth in this Agreement,
for other securities), the "Purchase Price"), but the amount and type of
securities purchasable upon the exercise of each Right and the Purchase Price
thereof shall be subject to adjustment as provided herein.

         (b) Any Rights Certificate issued pursuant to Section 3(a) or Section
22 hereof that represents Rights beneficially owned by a Person described in the
first sentence of Section 7(e), and any Rights Certificate issued pursuant to
Section 6 or Section 11 hereof upon transfer, exchange, replacement or
adjustment of any such Rights, shall contain (to the extent the Rights Agent has
notice thereof and to the extent feasible) the following legend, modified as
applicable to apply to such Person:

     The Rights represented by this Rights Certificate are or were beneficially
     owned by a Person who was or became an Acquiring Person or an Affiliate or
     Associate of an Acquiring Person (as such terms are defined in the Rights
     Agreement). Accordingly, this Rights Certificate and the Rights represented
     hereby [will] [have] become null and void in the circumstances and with the
     effect specified in Section 7(e) of such Agreement.

The provisions of Section 7(e) of this Agreement shall be operative whether or
not the foregoing legend is contained on any such Rights Certificate. The
Company shall give written notice to the




                                       9
   13


Rights Agent promptly after it becomes aware of the existence of any Acquiring
Person or any Associate or Affiliate thereof.

         Section 5. Countersignature and Registration.

         (a) The Rights Certificates shall be executed on behalf of the Company
by its Chairman of the Board, its President or any Vice President, either
manually or by facsimile signature, and shall have affixed thereto the Company's
seal or a facsimile thereof, which shall be attested by the Secretary or an
Assistant Secretary of the Company, either manually or by facsimile signature.
The Rights Certificates shall be countersigned by the Rights Agent, either
manually or by facsimile signature, and shall not be valid for any purpose
unless so countersigned. In case any officer of the Company who shall have
signed any of the Rights Certificates shall cease to be such officer of the
Company before countersignature by the Rights Agent and issuance and delivery by
the Company, such Rights Certificates, nevertheless, may be countersigned by the
Rights Agent and issued and delivered by the Company with the same force and
effect as though the person who signed such Rights Certificates had not ceased
to be such officer of the Company; and any Rights Certificate may be signed on
behalf of the Company by any person who, at the actual date of the execution of
such Rights Certificate, shall be a proper officer of the Company to sign such
Rights Certificate, although at the date of the execution of this Rights
Agreement any such person was not such an officer.

         (b) Following the Distribution Date and receipt by the Rights Agent of
written notice to that effect and all other relevant information referred to in
Section 3(a), the Rights Agent will keep or cause to be kept, at its principal
office or offices designated as the appropriate place for surrender of Rights
Certificates upon exercise or transfer, books for registration and transfer of
the Rights Certificates issued hereunder. Such books shall show the names and
addresses of the respective holders of the Rights Certificates, the number of
Rights evidenced on its face by each of the Rights Certificates and the
certificate number and the date of each of the Rights Certificates.

         Section 6. Transfer, Split-Up, Combination and Exchange of Rights
Certificates; Mutilated, Destroyed, Lost or Stolen Rights Certificates.

         (a) Subject to the provisions of Section 4(b), Section 7(e), Section
13(d), Section 14 and Section 24 hereof, at any time after the close of business
on the Distribution Date, and at or prior to the close of business on the
Expiration Date, any Rights Certificate or Rights Certificates may be
transferred, split up, combined or exchanged for another Rights Certificate or
Rights Certificates, entitling the registered holder to purchase a like number
of Fractional Shares of Preferred Stock (or, following a Triggering Event,
Common Stock, other securities, cash or other assets, as the case may be) as the
Rights Certificate or Rights Certificates surrendered then entitled such holder
(or former holder in the case of a transfer) to purchase. Any registered holder
desiring to transfer, split up, combine or exchange any Rights Certificate or
Rights Certificates shall make such request in writing delivered to the Rights
Agent, and shall surrender the Rights Certificate or Rights Certificates to be
transferred, split up, combined or exchanged at the offices of the Rights Agent
designated for such purpose. Neither the Rights Agent nor the Company shall be
obligated to take any action whatsoever with respect to the transfer of any such
surrendered Rights Certificate until the registered holder shall have properly
completed and signed the certificate contained in the form of assignment on the
reverse side of such Rights



                                       10
   14


Certificate and shall have provided such additional evidence of the identity of
the Beneficial Owner (or former Beneficial Owner) thereof or of the Affiliates
or Associates thereof as the Company or the Rights Agent shall request.
Thereupon the Rights Agent shall, subject to Section 4(b), Section 7(e), Section
13(d), Section 14 and Section 24 hereof, countersign and deliver to the Person
entitled thereto a Rights Certificate or Rights Certificates, as the case may
be, as so requested. The Company may require payment by the holder of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer, split-up, combination or exchange of Rights
Certificates. The Rights Agent shall have no duty or obligation under this
Section 6 or any other similar provision of this Agreement unless and until it
is satisfied that all such taxes and/or governmental charges have been paid in
full.

         (b) Upon receipt by the Company and the Rights Agent of evidence
satisfactory to them of the loss, theft, destruction or mutilation of a Rights
Certificate, and, in case of loss, theft or destruction, of indemnity or
security satisfactory to them, and reimbursement to the Company and the Rights
Agent of all reasonable expenses incidental thereto, and upon surrender to the
Rights Agent and cancellation of the Rights Certificate if mutilated, the
Company will, subject to Section 4(b), Section 7(e), Section 13(d), Section 14
and Section 24, execute and deliver a new Rights Certificate of like tenor to
the Rights Agent for countersignature and delivery to the registered owner in
lieu of the Rights Certificate so lost, stolen, destroyed or mutilated.

         Section 7. Exercise of Rights; Purchase Price.

         (a) Subject to Section 7(e) hereof, the registered holder of any Rights
Certificate may exercise the Rights evidenced thereby (except as otherwise
provided herein including, without limitation, the restrictions on
exercisability set forth in Section 9(c), Section 11(a)(iii) and Section 23(a)
hereof) in whole or in part at any time after the Distribution Date upon
surrender of the Rights Certificate, with the form of election to purchase and
the certificate on the reverse side thereof duly completed and executed, to the
Rights Agent at the principal office or offices of the Rights Agent designated
for such purpose, together with payment of the aggregate Purchase Price with
respect to the total number of Fractional Shares of Preferred Stock (or other
securities, cash or other assets, as the case may be) as to which such
surrendered Rights are then exercisable, at or prior to the Expiration Date.

         (b) The Purchase Price for each Fractional Share of Preferred Stock
pursuant to the exercise of a Right shall initially be $100, and shall be
subject to adjustment from time to time as provided in Sections 11 and 13(a)
hereof and shall be payable in accordance with paragraph (c) below.

         (c) Upon receipt of a Rights Certificate representing exercisable
Rights, with the form of election to purchase and the certificate on the reverse
side thereof duly executed, accompanied by payment, with respect to each Right
so exercised, of the Purchase Price per Fractional Share of Preferred Stock (or
other shares, securities, cash or other assets, as the case may be) to be
purchased as set forth below and an amount equal to any applicable tax or
governmental charge, the Rights Agent shall, subject to Section 20(k) hereof,
thereupon promptly (i)(A) requisition from any transfer agent of the shares of
Preferred Stock (or make available, if the Rights Agent is the transfer agent
for such shares) certificates for the total number of Fractional Shares of
Preferred Stock to be purchased, and the Company hereby




                                       11
   15

irrevocably authorizes its transfer agent to comply with all such requests, or
(B) if the Company, in its sole discretion, shall have elected to deposit the
shares of Preferred Stock issuable upon exercise of the Rights hereunder with a
depositary agent, requisition from the depositary agent depositary receipts
representing interests in such number of Fractional Shares of Preferred Stock as
are to be purchased (in which case certificates for the shares of Preferred
Stock represented by such receipts shall be deposited by the transfer agent with
the depositary agent) and the Company will direct the depositary agent to comply
with such request, (ii) requisition from the Company the amount of cash, if any,
to be paid in lieu of fractional shares in accordance with Section 14 hereof,
(iii) after receipt of such certificates or depositary receipts, cause the same
to be delivered to or upon the order of the registered holder of such Rights
Certificate, registered in such name or names as may be designated by such
holder and (iv) after receipt thereof, deliver such cash, if any, to or upon the
order of the registered holder of such Rights Certificate. The payment of the
Purchase Price (as such amount may be reduced pursuant to Section 11(a)(iii)
hereof) may be made in cash or by certified check, cashier's or official bank
check or bank draft payable to the order of the Company or the Rights Agent. In
the event that the Company is obligated to issue other securities (including
Common Stock) of the Company, pay cash and/or distribute other property pursuant
to Section 11(a) or Section 13(a) hereof, the Company will make all arrangements
necessary so that such other securities, cash and/or other property are
available for distribution by the Rights Agent, if and when necessary to comply
with this Agreement. The Company reserves the right to require prior to the
occurrence of a Triggering Event that, upon exercise of Rights, a number of
Rights be exercised so that only whole shares of Preferred Stock would be
issued.

         (d) In case the registered holder of any Rights Certificate shall
exercise fewer than all the Rights evidenced thereby, a new Rights Certificate
evidencing Rights equivalent to the Rights remaining unexercised shall be issued
by the Rights Agent and delivered to, or upon the order of, the registered
holder of such Rights Certificate, registered in such name or names as may be
designated by such holder, subject to the provisions of Section 14 hereof.

         (e) Notwithstanding anything in this Agreement to the contrary, from
and after the first occurrence of a Triggering Event, any Rights beneficially
owned by or transferred to (i) an Acquiring Person or an Associate or Affiliate
of an Acquiring Person other than any such Person that became such pursuant to a
Permitted Offer and the Board of Directors in good faith determines was not
involved in and did not cause or facilitate, directly or indirectly, such
Triggering Event, (ii) a direct or indirect transferee of such Rights from such
Acquiring Person (or any such Associate or Affiliate) who becomes a transferee
after such Triggering Event or (iii) a direct or indirect transferee of such
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with such Triggering Event and receives such
Rights pursuant to either (A) a transfer (whether or not for consideration) from
such Acquiring Person (or such Affiliate or Associate) to holders of equity
interests in such Acquiring Person (or such Affiliate or Associate) or to any
Person with whom such Acquiring Person (or such Affiliate or Associate) has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer that the Board of Directors of the Company determines
is part of a plan, arrangement or understanding that has as a primary purpose or
effect the avoidance of this Section 7(e), shall become null and void without
any further action, no holder of such Rights shall have any rights whatsoever
with respect to such Rights, whether under any provision of this Agreement or
otherwise, and such Rights shall not be transferable. The Company shall use all
reasonable efforts to ensure that the provisions of




                                       12
   16


this Section 7(e) and Section 4(b) hereof are complied with, but neither the
Company nor the Rights Agent shall have any liability to any holder of Rights
Certificates or other Person as a result of the Company's failure to make any
determinations with respect to an Acquiring Person or its Affiliates, Associates
or transferees hereunder.

         (f) Notwithstanding anything in this Agreement to the contrary, neither
the Rights Agent nor the Company shall be obligated to undertake any action with
respect to a registered holder upon the occurrence of any purported exercise as
set forth in this Section 7 unless such registered holder shall have (i)
properly completed and signed the certificate contained in the form of election
to purchase set forth on the reverse side of the Rights Certificate surrendered
for such exercise and (ii) provided such additional evidence of the identity of
the Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates
thereof as the Company or the Rights Agent shall request.

         Section 8. Cancellation and Destruction of Rights Certificates. All
Rights Certificates surrendered for the purpose of exercise, transfer, split-up,
combination or exchange shall, if surrendered to the Company or any of its
agents, be delivered to the Rights Agent for cancellation or in canceled form,
or, if surrendered to the Rights Agent, shall be canceled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
any of the provisions of this Agreement. The Company shall deliver to the Rights
Agent for cancellation and retirement, and the Rights Agent shall so cancel and
retire, any other Rights Certificate purchased or acquired by the Company
otherwise than upon the exercise thereof. The Rights Agent shall deliver all
canceled Rights Certificates to the Company, or shall, at the written request of
the Company, destroy such canceled Rights Certificates, and in such case shall
deliver a certificate of destruction thereof to the Company.

         Section 9. Reservation and Availability of Capital Stock.

         (a) The Company covenants and agrees that it will cause to be reserved
and kept available out of its authorized and unissued shares, or out of its
authorized and issued shares held in its treasury, the number of shares of
Preferred Stock (and, following the occurrence of a Triggering Event, Common
Stock and/or other securities) that, as provided in this Agreement, including
Section 11(a)(iii) hereof, will be sufficient to permit the exercise in full of
all outstanding Rights.

         (b) So long as any shares of Preferred Stock (and, following the
occurrence of a Triggering Event, Common Stock and/or other securities) issuable
and deliverable upon the exercise of the Rights are listed on any national
securities exchange or quoted on any trading system, the Company shall use its
best efforts to cause, from and after such time as the Rights become
exercisable, all shares reserved for such issuance to be listed on such
exchange, or quoted on such system, upon official notice of issuance upon such
exercise. Following the occurrence of a Triggering Event, the Company will use
its best efforts to list (or continue the listing of) the Rights and the
securities issuable and deliverable upon the exercise of the Rights on one or
more national securities exchanges or to cause the Rights and the securities
purchasable upon exercise of the Rights to be reported by NASDAQ or such other
transaction reporting system then in use.



                                       13
   17

         (c) The Company shall use its best efforts to (i) prepare and file, as
soon as practicable following the first occurrence of a Flip-In Event or, if
applicable, as soon as practicable following the earliest date after the first
occurrence of a Flip-In Event on which the consideration to be delivered by the
Company upon exercise of the Rights has been determined pursuant to this
Agreement (including in accordance with Section 11(a)(iii) hereof), a
registration statement on an appropriate form under the Securities Act with
respect to the securities purchasable upon exercise of the Rights, (ii) cause
such registration statement to become effective as soon as practicable after
such filing, and (iii) cause such registration statement to remain effective
(with a prospectus at all times meeting the requirements of the Securities Act)
until the earlier of (A) the date as of which the Rights are no longer
exercisable for such securities and (B) the Expiration Date. The Company will
also take such action as may be appropriate under, or to ensure compliance with,
the securities or "blue sky" laws of the various states in connection with the
exercisability of the Rights. The Company may temporarily suspend, for a period
of time not to exceed 90 days after the date set forth in clause (i) of the
first sentence of this Section 9(c), the exercisability of the Rights in order
to prepare and file such registration statement and permit it to become
effective. In addition, if the Company shall determine that the Securities Act
requires an effective registration statement under the Securities Act following
the Distribution Date, the Company may temporarily suspend the exercisability of
the Rights until such time as such a registration statement has been declared
effective. Upon any such suspension, the Company shall promptly notify the
Rights Agent in writing of such suspension and shall issue a public announcement
stating that the exercisability of the Rights has been temporarily suspended, as
well as a public announcement at such time as the suspension is no longer in
effect (with prompt notice to the Rights Agent that such suspension is no longer
in effect). Notwithstanding any provision of this Agreement to the contrary, the
Rights shall not be exercisable in any jurisdiction if the requisite
qualification in such jurisdiction shall not have been obtained, the exercise
thereof shall not be permitted under applicable law or any required registration
statement shall not have been declared effective.

         (d) The Company covenants and agrees that it will take all such action
as may be necessary to ensure that all Fractional Shares of Preferred Stock
(and, following the occurrence of a Triggering Event, Common Stock and/or other
securities) delivered upon exercise of Rights shall, at the time of delivery of
the certificates for such shares (subject to payment of the Purchase Price), be
duly and validly authorized and issued and fully paid and nonassessable.

         (e) The Company further covenants and agrees that it will pay when due
and payable any and all applicable taxes and charges that may be payable in
respect of the issuance or delivery of the Rights Certificates and of any
certificates for a number of Fractional Shares of Preferred Stock (or Common
Stock and/or other securities, as the case may be) upon the exercise of Rights.
The Company shall not, however, be required to pay any tax or charge that may be
payable in respect of any transfer or delivery of Rights Certificates to a
Person other than, or the issuance or delivery of a number of Fractional Shares
of Preferred Stock (or Common Stock and/or other securities, as the case may be)
in respect of a name other than that of, the registered holder of the Rights
Certificates evidencing Rights surrendered for exercise or to issue or deliver
any certificates for a number of Fractional Shares of Preferred Stock (or Common
Stock and/or other securities, as the case may be) in a name other than that of
the registered holder upon the exercise of any Rights until such tax or charge
shall have been paid (any such tax or charge being




                                       14
   18

payable by the holder of such Rights Certificate at the time of surrender) or
until it has been established to the Company's satisfaction that no such tax or
charge is due.

         Section 10. Preferred Stock Record Date. Each Person in whose name any
certificate for a number of Fractional Shares of Preferred Stock (or Common
Stock and/or other securities, as the case may be) is issued upon the exercise
of Rights shall for all purposes be deemed to have become the holder of record
of such shares (fractional or otherwise) of Preferred Stock (or Common Stock
and/or other securities, as the case may be) represented thereby on, and such
certificate shall be dated, the date upon which the Rights Certificate
evidencing such Rights was duly surrendered and payment of the Purchase Price
(and all applicable taxes and charges) was made; provided, however, that if the
date of such surrender and payment is a date upon which the Preferred Stock (or
Common Stock and/or other securities, as the case may be) transfer books of the
Company are closed, such Person shall be deemed to have become the record holder
of such shares (fractional or otherwise) on, and such certificate shall be
dated, the next succeeding Business Day on which the Preferred Stock (or Common
Stock and/or other securities, as the case may be) transfer books of the Company
are open. Prior to the exercise of the Rights evidenced thereby, the holder of a
Rights Certificate, as such, shall not be entitled to any rights of a
stockholder of the Company with respect to shares for which the Rights shall be
exercisable, including, without limitation, the right to vote, to receive
dividends or other distributions or to exercise any preemptive rights, and shall
not be entitled to receive any notice of any proceedings of the Company, except
as provided herein.

         Section 11. Adjustment of Purchase Price, Number and Kind of Shares or
Number of Rights. The Purchase Price, the number and kind of shares or other
securities subject to purchase upon exercise of each Right and the number of
Rights outstanding are subject to adjustment from time to time as provided in
this Section 11.

               (a)(i) In the event the Company shall at any time after the
     Rights Dividend Declaration Date (A) declare a dividend on the outstanding
     shares of Preferred Stock payable in shares of Preferred Stock, (B)
     subdivide the outstanding shares of Preferred Stock, (C) combine the
     outstanding shares of Preferred Stock into a smaller number of shares or
     (D) otherwise reclassify the outstanding shares of Preferred Stock
     (including any such reclassification in connection with a consolidation or
     merger in which the Company is the continuing or surviving corporation),
     except as otherwise provided in this Section 11(a) and Section 7(e) hereof,
     the Purchase Price in effect at the time of the record date for such
     dividend or of the effective date of such subdivision, combination or
     reclassification, and the number and kind of shares of Preferred Stock or
     capital stock or other securities, as the case may be, issuable on such
     date, shall be proportionately adjusted so that the holder of any Right
     exercised after such time shall be entitled to receive, upon payment of the
     Purchase Price then in effect, the aggregate number and kind of shares of
     Preferred Stock or capital stock or other securities, as the case may be,
     which, if such Right had been exercised immediately prior to such date and
     at a time when the Preferred Stock transfer books of the Company were open,
     he would have owned upon such exercise and been entitled to receive by
     virtue of such dividend, subdivision, combination or reclassification. If
     an event occurs that would require an adjustment under both this Section
     11(a)(i) and Section 11(a)(ii) hereof, the adjustment provided for in this
     Section 11(a)(i) shall be in addition to, and shall be made prior to, any
     adjustment required pursuant to Section 11(a)(ii) hereof.



                                       15
   19

               (ii) Subject to Sections 23 and 24 of this Agreement, in the
     event any Person shall, at any time after the Rights Dividend Declaration
     Date, become an Acquiring Person, unless the event causing such Person to
     become an Acquiring Person is (1) a Flip-Over Event or (2) an acquisition
     of shares of Common Stock pursuant to a Permitted Offer (provided that this
     clause (2) shall cease to apply if such Acquiring Person thereafter becomes
     the Beneficial Owner of any additional shares of Common Stock other than
     pursuant to such Permitted Offer or a transaction set forth in Section
     13(a) or 13(d) hereof), then (x) the Purchase Price shall be adjusted to be
     the Purchase Price immediately prior to the first occurrence of a Flip-In
     Event multiplied by the number of Fractional Shares of Preferred Stock for
     which a Right was exercisable immediately prior to such first occurrence
     and (y) each holder of a Right (except as provided below in Section
     11(a)(iii) and in Section 7(e) hereof) shall thereafter have the right to
     receive, upon exercise thereof at a price equal to the Purchase Price in
     accordance with the terms of this Agreement, in lieu of the shares of
     Preferred Stock otherwise purchasable thereunder, such number of shares of
     Common Stock of the Company as shall equal the result obtained by dividing
     the Purchase Price by 50% of the Current Market Price per share of Common
     Stock on the date of such first occurrence (such number of shares, the
     "Adjustment Shares"); provided that the Purchase Price and the number of
     Adjustment Shares shall be further adjusted as provided in this Agreement
     to reflect any events occurring after the date of such first occurrence.

               (iii) In the event that the number of shares of Common Stock that
     are authorized by the Company's certificate of incorporation but not
     outstanding or reserved for issuance for purposes other than upon exercise
     of the Rights is not sufficient to permit the exercise in full of the
     Rights in accordance with the foregoing subparagraph (ii) of this Section
     11(a), the Company shall, to the extent permitted by applicable law and
     regulation, (A) determine the excess of (1) the value of the Adjustment
     Shares issuable upon the exercise of a Right (computed using the Current
     Market Price used to determine the number of Adjustment Shares) (the
     "Current Value") over (2) the Purchase Price (such excess is herein
     referred to as the "Spread"), and (B) with respect to each Right, make
     adequate provision to substitute for the Adjustment Shares, upon the
     exercise of the Rights and payment of the applicable Purchase Price, (1)
     cash, (2) a reduction in the Purchase Price, (3) Common Stock or other
     equity securities of the Company (including, without limitation, shares, or
     units of shares, of preferred stock (including, without limitation, the
     Preferred Stock) that the Board of Directors of the Company has determined
     to have the same value as shares of Common Stock (such shares of preferred
     stock are herein referred to as "Common Stock Equivalents")), (4) debt
     securities of the Company, (5) other assets or (6) any combination of the
     foregoing, having an aggregate value equal to the Current Value, where such
     aggregate value has been determined by the Board of Directors of the
     Company based upon the advice of a nationally recognized investment banking
     firm selected by the Board of Directors of the Company; provided, however,
     if the Company shall not have made adequate provision to deliver value
     pursuant to clause (B) above within 30 days following the later of (x) the
     first occurrence of a Flip-In Event and (y) the date on which the Company's
     right of redemption pursuant to Section 23(a) expires (the later of (x) and
     (y) being referred to herein as the "Flip-In Trigger Date"), then the
     Company shall be obligated to deliver, upon the surrender for exercise of a
     Right and without requiring payment of the Purchase Price, shares of






                                       16
   20


     Common Stock (to the extent available) and then, if necessary, cash, which
     shares and/or cash have an aggregate value equal to the Spread. If the
     Board of Directors of the Company shall determine in good faith that it is
     likely that sufficient additional shares of Common Stock could be
     authorized for issuance upon exercise in full of the Rights, the 30-day
     period set forth above may be extended to the extent necessary, but not
     more than 90 days after the Flip-In Trigger Date, in order that the Company
     may seek stockholder approval for the authorization of such additional
     shares (such period, as it may be extended, the "Substitution Period"). To
     the extent that the Company or the Board of Directors determines that some
     action need be taken pursuant to the first and/or second sentences of this
     Section 11(a)(iii), the Company (x) shall provide, subject to Section 7(e)
     hereof, that such action shall apply uniformly to all outstanding Rights,
     and (y) may suspend the exercisability of the Rights until the expiration
     of the Substitution Period in order to seek any authorization of additional
     shares and/or to decide the appropriate form of distribution to be made
     pursuant to such first sentence and to determine the value thereof. In the
     event of any such suspension, the Company shall promptly notify the Rights
     Agent in writing of such suspension and shall issue a public announcement
     stating that the exercisability of the Rights has been temporarily
     suspended, as well as a public announcement at such time as the suspension
     is no longer in effect (with prompt written notice to the Rights Agent that
     such suspension is no longer in effect). For purposes of this Section
     11(a)(iii), the value of the Common Stock shall be the Current Market Price
     per share of the Common Stock on the Flip-In Trigger Date and the value of
     any Common Stock Equivalent shall be deemed to have the same value as the
     Common Stock on such date.

         (b) In case the Company shall fix a record date for the issuance of
rights, options or warrants to all holders of Preferred Stock entitling them to
subscribe for or purchase (for a period expiring within 45 calendar days after
such record date) Preferred Stock (or shares having substantially the same
rights, privileges and preferences as the shares of Preferred Stock ("Equivalent
Preferred Stock")) or securities convertible into Preferred Stock or Equivalent
Preferred Stock at a price per share of Preferred Stock or per share of
Equivalent Preferred Stock (or having a conversion price per share, if a
security convertible into Preferred Stock or Equivalent Preferred Stock) less
than the Current Market Price per share of Preferred Stock on such record date,
the Purchase Price to be in effect after such record date shall be determined by
multiplying the Purchase Price in effect immediately prior to such record date
by a fraction, the numerator of which shall be the number of shares of Preferred
Stock outstanding on such record date, plus the number of shares of Preferred
Stock that the aggregate offering price of the total number of shares of
Preferred Stock and/or Equivalent Preferred Stock so to be offered (and/or the
aggregate initial conversion price of the convertible securities so to be
offered) would purchase at such Current Market Price, and the denominator of
which shall be the number of shares of Preferred Stock outstanding on such
record date, plus the number of additional shares of Preferred Stock and/or
Equivalent Preferred Stock to be offered for subscription or purchase (or into
which the convertible securities so to be offered are initially convertible). In
case such subscription price may be paid by delivery of consideration, part or
all of which may be in a form other than cash, the value of such consideration
shall be as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a reasonably detailed statement filed
with the Rights Agent and shall be binding on the Rights Agent and the holders
of the Rights. Shares of Preferred Stock owned by or held for the account of the
Company shall not be deemed outstanding for the purpose of any such computation.
Such




                                       17
   21

adjustment shall be made successively whenever such a record date is fixed,
and in the event that such rights or warrants are not so issued, the Purchase
Price shall be adjusted to be the Purchase Price that would then be in effect if
such record date had not been fixed.

         (c) In case the Company shall fix a record date for a distribution to
all holders of Preferred Stock (including any such distribution made in
connection with a consolidation or merger in which the Company is the continuing
or surviving corporation) of evidences of indebtedness, cash (other than a
regular quarterly cash dividend out of the earnings or retained earnings of the
Company), assets (other than a dividend payable in Preferred Stock, but
including any dividend payable in stock other than Preferred Stock) or
subscription rights or warrants (excluding those referred to in Section 11(b)
hereof), the Purchase Price to be in effect after such record date shall be
determined by multiplying the Purchase Price in effect immediately prior to such
record date by a fraction, the numerator of which shall be the Current Market
Price per share of Preferred Stock on such record date, less the fair market
value (as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a reasonably detailed statement filed
with the Rights Agent and shall be binding on the Rights Agent) of the portion
of the cash, assets or evidences of indebtedness so to be distributed or of such
subscription rights or warrants applicable to a share of Preferred Stock and the
denominator of which shall be such Current Market Price per share of Preferred
Stock. Such adjustments shall be made successively whenever such a record date
is fixed, and in the event that such distribution is not so made, the Purchase
Price shall be adjusted to be the Purchase Price that would have been in effect
if such record date had not been fixed.

         (d)(i) For the purpose of any computation hereunder, other than
computations made pursuant to Section 11(a)(iii) hereof, the "Current Market
Price" per share of Common Stock of a Person on any date shall be deemed to be
the average of the daily Closing Prices per share of such Common Stock for the
30 consecutive Trading Days immediately prior to such date, and for purposes of
computations made pursuant to Section 11(a)(iii) hereof, the "Current Market
Price" per share of Common Stock on any date shall be deemed to be the average
of the daily Closing Prices per share of such Common Stock for the 10
consecutive Trading Days immediately following such date; provided, however,
that in the event that the Current Market Price per share of Common Stock is
determined during a period following the announcement of (A) a dividend or
distribution on such Common Stock other than a regular quarterly cash dividend
or the dividend of the Rights, or (B) any subdivision, combination or
reclassification of such Common Stock, and the ex-dividend date for such
dividend or distribution, or the record date for such subdivision, combination
or reclassification, shall not have occurred prior to the commencement of the
requisite 30 Trading Day or 10 Trading Day period, as set forth above, then, and
in each such case, the Current Market Price shall be properly adjusted to take
into account ex-dividend trading. If the Common Stock is not publicly held or
not so listed or traded, "Current Market Price" per share shall mean the fair
value per share as determined in good faith by the Board of Directors of the
Company, whose determination shall be described in a reasonably detailed
statement filed with the Rights Agent and shall be conclusive for all purposes.

     (ii) For the purpose of any computation hereunder, the "Current Market
Price" per share (or Fractional Share) of Preferred Stock shall be determined in
the same manner as set forth above for the Common Stock in clause (i) of this
Section 11(d) (other than the last sentence thereof). If the Current Market
Price per share (or Fractional Share) of Preferred Stock cannot be





                                       18
   22


determined in the manner provided above or if the Preferred Stock is not
publicly held or listed or traded in a manner described in clause (i) of this
Section 11(d), the "Current Market Price" per share of Preferred Stock shall be
conclusively deemed to be an amount equal to 100 (as such number may be
appropriately adjusted for such events as stock splits, stock dividends and
recapitalizations with respect to the Common Stock occurring after the date of
this Agreement) multiplied by the Current Market Price per share of the Common
Stock. If neither the Common Stock nor the Preferred Stock is publicly held or
so listed or traded, Current Market Price per share of the Preferred Stock shall
mean the fair value per share as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a reasonably
detailed statement filed with the Rights Agent and shall be conclusive for all
purposes. For all purposes of this Agreement, the Current Market Price of a
Fractional Share of Preferred Stock shall be equal to the Current Market Price
of one share of Preferred Stock divided by 100.

         (e) Anything herein to the contrary notwithstanding, no adjustment in
the Purchase Price shall be required unless such adjustment would require an
increase or decrease of at least 1% in the Purchase Price; provided, however,
that any adjustments that by reason of this Section 11(e) are not required to be
made shall be carried forward and taken into account in any subsequent
adjustment. All calculations under this Section 11 shall be made to the nearest
cent or to the nearest ten-thousandth of a share of Common Stock or other share
or to the nearest ten-thousandth of a Fractional Share of Preferred Stock, as
the case may be. Notwithstanding the first sentence of this Section 11(e), any
adjustment required by this Section 11 shall be made no later than the earlier
of (i) three years from the date of the transaction which mandates such
adjustment or (ii) the Expiration Date.

         (f) If as a result of an adjustment made pursuant to Section 11(a) or
Section 13(a) hereof, the holder of any Right thereafter exercised shall become
entitled to receive in respect of such Right any shares of capital stock other
than Preferred Stock, thereafter the number of such other shares so receivable
upon exercise of any Right and the Purchase Price thereof shall be subject to
adjustment from time to time in a manner and on terms as nearly equivalent as
practicable to the provisions with respect to the Preferred Stock contained in
Sections 11(a), (b), (c), (e), (f), (g), (h), (i), (j), (k) and (m) hereof, and
the provisions of Sections 7, 9, 10, 13 and 14 hereof with respect to the
Preferred Stock shall apply on like terms to any such other shares.

         (g) All Rights originally issued by the Company subsequent to any
adjustment made to the Purchase Price hereunder shall evidence the right to
purchase, at the adjusted Purchase Price, the number of Fractional Shares of
Preferred Stock purchasable from time to time hereunder upon exercise of the
Rights, all subject to further adjustment as provided herein.

         (h) Unless the Company shall have exercised its election as provided in
Section 11(i) hereof, upon each adjustment of the Purchase Price as a result of
the calculations made in Sections 11(b) and (c) hereof, each Right outstanding
immediately prior to the making of such adjustment shall thereafter evidence the
right to purchase, at the adjusted Purchase Price, that number of Fractional
Shares of Preferred Stock (calculated to the nearest one ten-thousandth of a
Fractional Share) obtained by (i) multiplying (x) the number of Fractional
Shares of Preferred Stock covered by a Right immediately prior to this
adjustment by (y) the Purchase Price in effect immediately prior to such
adjustment of the Purchase Price, and (ii) dividing the





                                       19
   23

product so obtained by the Purchase Price in effect immediately after such
adjustment of the Purchase Price.

         (i) The Company may elect, on or after the date of any adjustment of
the Purchase Price, to adjust the number of Rights in lieu of any adjustment in
the number of Fractional Shares of Preferred Stock purchasable upon the exercise
of a Right. Each of the Rights outstanding after the adjustment in the number of
Rights shall be exercisable for the number of Fractional Shares of Preferred
Stock for which a Right was exercisable immediately prior to such adjustment.
Each Right held of record prior to such adjustment of the number of Rights shall
become that number of Rights (calculated to the nearest ten-thousandth) obtained
by dividing the Purchase Price in effect immediately prior to adjustment of the
Purchase Price by the Purchase Price in effect immediately after adjustment of
the Purchase Price. The Company shall promptly notify the Rights Agent in
writing of such election and shall make a public announcement of its election to
adjust the number of Rights, indicating the record date for the adjustment, and,
if known at the time, the amount of the adjustment to be made. This record date
may be the date on which the Purchase Price is adjusted or any day thereafter,
but, if the Rights Certificates have been issued, shall be at least 10 days
later than the date of the public announcement. If Rights Certificates have been
issued, upon each adjustment of the number of Rights pursuant to this Section
11(i), the Company shall, as promptly as practicable, cause to be distributed to
holders of record of Rights Certificates on such record date Rights Certificates
evidencing, subject to Section 14 hereof, the additional Rights to which such
holders shall be entitled as a result of such adjustment, or, at the option of
the Company, shall cause to be distributed to such holders of record in
substitution and replacement for the Rights Certificates held by such holders
prior to the date of adjustment, and upon surrender thereof, if required by the
Company, new Rights Certificates evidencing all the Rights to which such holders
shall be entitled after such adjustment. Rights Certificates so to be
distributed shall be issued, executed and countersigned in the manner provided
for herein (and may bear, at the option of the Company, the adjusted Purchase
Price) and shall be registered in the names of the holders of record of Rights
Certificates on the record date specified in the public announcement.

         (j) Irrespective of any adjustment or change in the Purchase Price or
the number of Fractional Shares of Preferred Stock issuable upon the exercise of
the Rights, the Rights Certificates theretofore and thereafter issued may
continue to express the Purchase Price per Fractional Share and the number of
Fractional Shares that were expressed in the initial Rights Certificates issued
hereunder.

         (k) Before taking any action that would cause an adjustment reducing
the Purchase Price below the then par value, if any, or the stated capital of
the number of Fractional Shares of Preferred Stock or of the number of shares of
Common Stock or other securities issuable upon exercise of a Right, the Company
shall take any corporate action that may, in the opinion of its counsel, be
necessary in order that the Company may validly and legally issue fully paid and
nonassessable such number of Fractional Shares of Preferred Stock or such number
of shares of Common Stock or other securities at such adjusted Purchase Price.

         (l) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer (with prompt written notice
thereof to the Rights Agent) until the occurrence of such event the issuance to
the holder of any Right exercised after such record date the number of



                                       20
   24

Fractional Shares of Preferred Stock and other capital stock or securities of
the Company, if any, issuable upon such exercise over and above the number of
Fractional Shares of Preferred Stock and other capital stock or securities of
the Company, if any, issuable upon such exercise on the basis of the Purchase
Price in effect prior to such adjustment; provided, however, that the Company
shall deliver to such holder a due bill or other appropriate instrument
evidencing such holder's right to receive such additional shares (fractional or
otherwise) or securities upon the occurrence of the event requiring such
adjustment.

         (m) Anything in this Section 11 to the contrary notwithstanding, the
Company shall be entitled to make such reductions in the Purchase Price, in
addition to those adjustments expressly required by this Section 11, as and to
the extent that in their good faith judgment the Board of Directors of the
Company shall determine to be advisable in order that any (i) consolidation or
subdivision of the Preferred Stock, (ii) issuance wholly for cash of any shares
of Preferred Stock at less than the current market price, (iii) issuance wholly
for cash of shares of Preferred Stock or securities that by their terms are
convertible into or exchangeable for shares of Preferred Stock, (iv) stock
dividends or (v) issuance of rights, options or warrants referred to in this
Section 11 hereafter made by the Company to holders of its Preferred Stock shall
not be taxable to such stockholders.

         (n) The Company covenants and agrees that it shall not, at any time
that there is an Acquiring Person, (i) consolidate with any other Person, (ii)
merge with or into any other Person, or (iii) sell, lease or transfer (or permit
one or more Subsidiaries to sell, lease or transfer), in one transaction or a
series of related transactions, assets or earning power aggregating more than
50% of the assets or earning power of the Company and its Subsidiaries (taken as
a whole) to any other Person or Persons, if (x) at the time of or immediately
after such consolidation, merger, sale, lease or transfer there are any rights,
warrants or other instruments or securities of the Company or any other Person
outstanding or agreements, arrangements or understandings in effect that would
substantially diminish or otherwise eliminate the benefits intended to be
afforded by the Rights, (y) prior to, simultaneously with or immediately after
such consolidation, merger, sale, lease or transfer, the stockholders or other
equity owners of the Person who constitutes, or would constitute, the "Principal
Party" for purposes of Section 13(a) hereof shall have received a distribution
of Rights previously owned by such Person or any of its Affiliates or
Associates, or (z) the identity, form or nature of organization of the Principal
Party (including, without limitation, the selection of the Person that will be
the Principal Party as a result of the Company's entering into one or more
consolidations, mergers, sales, leases, transfers or transactions with more than
one party) would preclude or limit the exercise of Rights or otherwise diminish
substantially or eliminate the benefits intended to be afforded by the Rights.

         (o) The Company covenants and agrees that, after the Distribution Date,
it will not, except as permitted by Section 23, Section 24 or Section 27 hereof,
take (or permit any Subsidiary to take) any action if the purpose of such action
is to, or if at the time such action is taken it is reasonably foreseeable that
such action will, diminish substantially or eliminate the benefits intended to
be afforded by the Rights.

         (p) Notwithstanding Section 3(c) hereof or any other provision of this
Agreement to the contrary, in the event that the Company shall at any time after
the Rights Dividend Declaration Date and prior to the Distribution Date (i)
declare a dividend on the outstanding shares of Common Stock payable in shares
of Common Stock, (ii) subdivide the



                                       21
   25

outstanding shares of Common Stock, (iii) combine the outstanding shares of
Common Stock into a smaller number of shares or (iv) otherwise reclassify the
outstanding shares of Common Stock (including any such reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving corporation), the number of Rights associated with each share of
Common Stock then outstanding, or issued or delivered thereafter with Rights,
shall be proportionately adjusted so that the number of Rights thereafter
associated with each share of Common Stock following any such event shall equal
the result obtained by multiplying the number of Rights associated with each
share of Common Stock immediately prior to such event by a fraction (the
"Adjustment Fraction"), the numerator of which shall be the total number of
shares of Common Stock outstanding immediately prior to the occurrence of the
event and the denominator of which shall be the total number of shares of Common
Stock outstanding immediately following the occurrence of such event. In lieu of
such adjustment in the number of Rights associated with one share of Common
Stock, the Company may elect to adjust (with prompt written notice thereof to
the Rights Agent) the number of Fractional Shares of Preferred Stock purchasable
upon the exercise of one Right and the Purchase Price. If the Company makes such
election, the number of Rights associated with one share of Common Stock shall
remain unchanged, and the number of Fractional Shares of Preferred Stock
purchasable upon exercise of one Right and the Purchase Price shall be
proportionately adjusted so that (i) the number of Fractional Shares of
Preferred Stock purchasable upon exercise of a Right following such adjustment
shall equal the product of the number of Fractional Shares of Preferred Stock
purchasable upon exercise of a Right immediately prior to such adjustment
multiplied by the Adjustment Fraction and (ii) the Purchase Price following such
adjustment shall equal the product of the Purchase Price immediately prior to
such adjustment multiplied by the Adjustment Fraction.

         Section 12. Certificate of Adjusted Purchase Price or Number of Shares.
Whenever an adjustment is made as provided in Section 11 or Section 13 hereof,
the Company shall (a) promptly prepare a certificate setting forth such
adjustment and a brief, reasonably detailed statement of the facts, computations
and methodology accounting for such adjustment, (b) promptly file with the
Rights Agent, and with each transfer agent for the Preferred Stock and the
Common Stock, a copy of such certificate and (c) mail a brief summary thereof to
each registered holder of a Rights Certificate (or, if prior to the Distribution
Date, to each registered holder of a certificate representing shares of Common
Stock) in accordance with Section 26 hereof. The Rights Agent shall be fully
protected in relying on any such certificate and on any adjustment therein
contained.

         Section 13. Consolidation, Merger or Sale or Transfer of Assets, Cash
Flow or Earning Power.

         (a) In the event that, from and after the time an Acquiring Person has
become such, directly or indirectly, (x) the Company shall consolidate with, or
merge with and into, any other Person, and the Company shall not be the
continuing or surviving corporation of such consolidation or merger, (y) any
Person shall consolidate with, or merge with or into, the Company, and the
Company shall be the continuing or surviving corporation of such consolidation
or merger, and, in connection with such consolidation or merger, all or part of
the outstanding shares of Common Stock shall be changed into or exchanged for
stock or other securities of the Company or any other Person or cash or any
other property, or (z) the Company shall sell, lease or otherwise transfer (or
one or more of its Subsidiaries shall sell, lease or



                                       22
   26

otherwise transfer), in one transaction or a series of related transactions,
assets, cash flow or earning power aggregating more than 50% of the assets, cash
flow or earning power of the Company and its Subsidiaries (taken as a whole) to
any Person or Persons (other than the Company or any wholly owned Subsidiary of
the Company or any combination thereof in one or more transactions each of which
complies (and all of which together comply) with Section 11(o) hereof), then,
and in each such case (except as may be contemplated by Section 13(d) hereof),
proper provision shall be made so that: (i) the Purchase Price shall be adjusted
to be the Purchase Price immediately prior to the first occurrence of a
Triggering Event multiplied by the number of Fractional Shares of Preferred
Stock for which a Right was exercisable immediately prior to such first
occurrence; (ii) on and after the Distribution Date, each holder of a Right,
except as provided in Section 7(e) hereof, shall thereafter have the right to
receive, upon the exercise thereof at the Purchase Price in accordance with the
terms of this Agreement, in lieu of shares of Preferred Stock or Common Stock of
the Company, such number of validly authorized and issued, fully paid,
nonassessable and freely tradeable shares of Common Stock of the Principal Party
(as such term is hereinafter defined), not subject to any liens, encumbrances,
rights of first refusal or other adverse claims, as shall be equal to the result
obtained by dividing the Purchase Price by 50% of the Current Market Price per
share of the Common Stock of such Principal Party on the date of consummation of
such Flip-Over Event; provided that the Purchase Price and the number of shares
of Common Stock of such Principal Party issuable upon exercise of each Right
shall be further adjusted as provided in this Agreement to reflect any events
occurring after the date of such first occurrence of a Triggering Event or after
the date of such Flip-Over Event, as applicable; (iii) such Principal Party
shall thereafter be liable for, and shall assume, by virtue of such Flip-Over
Event, all the obligations and duties of the Company pursuant to this Agreement;
(iv) the term "Company" shall thereafter be deemed to refer to such Principal
Party, it being specifically intended that the provisions of Section 11 hereof
shall apply only to such Principal Party following the first occurrence of a
Flip-Over Event; (v) such Principal Party shall take such steps (including, but
not limited to, the reservation of a sufficient number of shares of its Common
Stock) in connection with the consummation of any such transaction as may be
necessary to assure that the provisions hereof shall thereafter be applicable,
as nearly as reasonably may be, in relation to its shares of Common Stock
thereafter deliverable upon the exercise of the Rights; and (vi) the provisions
of Section 11(a)(ii) hereof shall be of no effect following the occurrence of
any Flip-Over Event.

         (b) "Principal Party" shall mean

         (i) in the case of any transaction described in clause (x) or (y) of
     the first sentence of Section 13(a), (A) the Person that is the issuer of
     any securities into which shares of Common Stock of the Company are
     converted in such merger or consolidation, or, if there is more than one
     such issuer, the issuer the Common Stock of which has the greatest
     aggregate market value, or (B) if no securities are so issued, (x) the
     Person that survives such consolidation or is the other party to the merger
     and survives such merger, or, if there is more than one such Person, the
     Person the Common Stock of which has the greatest aggregate market value or
     (y) if the Person that is the other party to the merger does not survive
     the merger, the Person that does survive the merger (including the Company
     if it survives); and

         (ii) in the case of any transaction described in clause (z) of the
     first sentence of Section 13(a), the Person that is the party receiving the
     greatest portion of the assets or









                                       23
   27


     earning power transferred pursuant to such transaction or transactions, or,
     if each Person that is a party to such transaction or transactions receives
     the same portion of the assets or earning power so transferred, or if the
     Person receiving the greatest portion of the assets or earning power cannot
     be determined, the Person the Common Stock of which has the greatest
     aggregate market value;

provided, however, that in any such case, if the Common Stock of such Person is
not at such time and has not been continuously over the preceding twelve-month
period registered under Section 12 of the Exchange Act, and if (1) such Person
is a direct or indirect Subsidiary of another Person the Common Stock of which
is and has been so registered, "Principal Party" shall refer to such other
Person; (2) such Person is a Subsidiary, directly or indirectly, of more than
one Person, the Common Stocks of all of which are and have been so registered,
"Principal Party" shall refer to whichever of such Persons is the issuer of the
Common Stock having the greatest aggregate market value; and (3) such Person is
owned, directly or indirectly, by a joint venture formed by two or more Persons
that are not owned, directly or indirectly, by the same Person, the rules set
forth in (1) and (2) above shall apply to each of the chains of ownership having
an interest in such joint venture as if such party were a "Subsidiary" of both
or all of such joint venturers and the Principal Parties in each such chain
shall bear the obligations set forth in this Section 13 in the same ratio as
their direct or indirect interests in such Person bear to the total of such
interests.

         (c) The Company shall not consummate any Flip-Over Event unless each
Principal Party (or Person that may become a Principal Party as a result of such
Flip-Over Event) shall have a sufficient number of authorized shares of its
Common Stock that have not been issued or reserved for issuance to permit the
exercise in full of the Rights in accordance with this Section 13 and unless
prior thereto the Company and each such Principal Party shall have executed and
delivered to the Rights Agent a supplemental agreement providing for the terms
set forth in paragraphs (a) and (b) of this Section 13 and further providing
that, as soon as practicable after the date of such Flip-Over Event, the
Principal Party at its own expense will

         (i) prepare and file a registration statement under the Securities Act
     with respect to the Rights and the securities purchasable upon exercise of
     the Rights on an appropriate form, and will use its best efforts to cause
     such registration statement to (A) become effective as soon as practicable
     after such filing and (B) remain effective (with a prospectus at all times
     meeting the requirements of the Securities Act) until the Expiration Date;

         (ii) use its best efforts to qualify or register the Rights and the
     securities purchasable upon exercise of the Rights under the "blue sky"
     laws of such jurisdictions as may be necessary or appropriate;

         (iii) use its best efforts, if the Common Stock of the Principal Party
     is or shall become listed on a national securities exchange, to list (or
     continue the listing of) the Rights and the securities purchasable upon
     exercise of the Rights on such securities exchange and, if the Common Stock
     of the Principal Party shall not be listed on a national securities
     exchange, to cause the Rights and the securities purchasable upon exercise
     of the Rights to be reported by NASDAQ or such other transaction reporting
     system then in use; and




                                       24
   28

         (iv) deliver to holders of the Rights historical financial statements
     for the Principal Party and each of its Affiliates that comply in all
     respects with the requirements for registration on Form 10 under the
     Exchange Act.

The provisions of this Section 13 shall similarly apply to successive mergers or
consolidations or sales or other transfers. In the event that a Flip-Over Event
shall occur at any time after the occurrence of a Flip-In Event, the Rights that
have not theretofore been exercised shall thereafter become exercisable in the
manner described in Section 13(a).

         (d) Notwithstanding anything in this Agreement to the contrary, Section
13 shall not be applicable to a transaction described in subparagraphs (x) and
(y) of Section 13(a) if (i) such transaction is consummated with a Person or
Persons who acquired shares of Common Stock pursuant to a Permitted Offer (or a
wholly owned subsidiary of any such Person or Persons), (ii) the price per share
of Common Stock offered in such transaction is not less than the price per share
of Common Stock paid to all holders of Common Stock whose shares were purchased
pursuant to such Permitted Offer, and (iii) the form of consideration being
offered to the remaining holders of shares of Common Stock pursuant to such
transaction is the same as the form of consideration paid pursuant to such
Permitted Offer. Upon consummation of any such transaction contemplated by this
Section 13(d), all Rights hereunder shall expire.

         Section 14. Fractional Rights and Fractional Shares.

         (a) The Company shall not be required to issue fractions of Rights,
except prior to the Distribution Date as provided in Section 11(p) hereof, or to
distribute Rights Certificates or scrip evidencing fractional Rights. In lieu of
such fractional Rights, there shall be paid to the registered holders of the
Rights Certificates with regard to which such fractional Rights would otherwise
be issuable, an amount in cash equal to the same fraction of the Closing Price
of one Right for the Trading Day immediately prior to the date on which such
fractional Rights would have been otherwise issuable.

         (b) The Company shall not be required to issue fractions of shares of
Preferred Stock (other than, except as provided in Section 7(c) hereof,
fractions that are integral multiples of a Fractional Share of Preferred Stock)
upon exercise of the Rights or to distribute certificates or scrip evidencing
fractional shares of Preferred Stock (other than, except as provided in Section
7(c) hereof, fractions that are integral multiples of a Fractional Share of
Preferred Stock). Interests in fractions of shares of Preferred Stock in
integral multiples of a Fractional Share of Preferred Stock may, at the election
of the Company in its sole discretion, be evidenced by depositary receipts,
pursuant to an appropriate agreement between the Company and a depositary
selected by it, provided that such agreement shall provide that the holders of
such depositary receipts shall have all the rights, privileges and preferences
to which they are entitled as beneficial owners of the shares of Preferred Stock
represented by such depositary receipts. In lieu of fractional shares of
Preferred Stock that are not integral multiples of a Fractional Share of
Preferred Stock, the Company may pay to the registered holders of Rights
Certificates at the time such Rights are exercised as herein provided an amount
in cash equal to the same fraction of one one-hundredth of the Closing Price of
a share of Preferred Stock for the Trading Day immediately prior to the date of
such exercise.



                                       25
   29

         (c) Following the occurrence of a Triggering Event, the Company shall
not be required to issue fractions of shares of Common Stock upon exercise of
the Rights or to distribute certificates or scrip evidencing fractional shares
of Common Stock. In lieu of fractional shares of Common Stock, the Company may
pay to the registered holders of Rights Certificates at the time such Rights are
exercised as herein provided an amount in cash equal to the same fraction of the
Closing Price of one share of Common Stock for the Trading Day immediately prior
to the date of such exercise.

         (d) The holder of a Right by the acceptance of the Right expressly
waives his right to receive any fractional Rights or any fractional shares upon
exercise of a Right, except as permitted by this Section 14.

         (e) Whenever a payment for fractional Rights or fractional shares is to
be made by the Rights Agent, the Company shall (i) promptly prepare and deliver
to the Rights Agent a certificate setting forth in reasonable detail the facts
related to such payment and the prices and/or formulas utilized in calculating
such payments, and (ii) provide sufficient monies to the Rights Agent in the
form of fully collected funds to make such payments. The Rights Agent shall be
fully protected in relying upon such a certificate and shall have no duty with
respect to, and shall not be deemed to have knowledge of, any payment for
fractional Rights or fractional shares under any Section of this Agreement
relating to the payment of fractional Rights or fractional shares unless and
until the Rights Agent shall have received such a certificate and sufficient
monies.

         Section 15. Rights of Action. All rights of action in respect of this
Agreement, other than rights of action vested in the Rights Agent pursuant to
Section 18 and Section 20 hereof, are vested in the respective registered
holders of the Rights Certificates (and, prior to the Distribution Date, the
registered holders of the Common Stock) and, where applicable, the Company; and
any registered holder of any Rights Certificate (or, prior to the Distribution
Date, of the Common Stock), without the consent of the Rights Agent or of the
holder of any other Rights Certificate (or, prior to the Distribution Date, of
the Common Stock), may, in his own behalf and for his own benefit, enforce, and
may institute and maintain any suit, action or proceeding against the Company to
enforce, or otherwise act in respect of, his right to exercise the Rights
evidenced by such Rights Certificate in the manner provided in such Rights
Certificate and in this Agreement. Without limiting the foregoing or any
remedies available to the holders of Rights, it is specifically acknowledged
that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and shall be entitled to specific performance of the
obligations hereunder and injunctive relief against actual or threatened
violations of the obligations hereunder of any Person subject to this Agreement.
After a Triggering Event, holders of Rights shall be entitled to recover the
reasonable costs and expenses, including attorneys' fees, incurred by them in
any action to enforce the provisions of this Agreement.

         Section 16. Agreement of Rights Holders. Every holder of a Right by
accepting the same consents and agrees with the Company and the Rights Agent and
with every other holder of a Right that:

         (a) prior to the Distribution Date, the Rights will not be evidenced by
Rights Certificates and will be transferable only in connection with the
transfer of Common Stock;



                                       26
   30

         (b) after the Distribution Date, the Rights Certificates will be
transferable only on the registry books of the Rights Agent if surrendered at
the principal office or offices of the Rights Agent designated for such
purposes, duly endorsed or accompanied by a proper instrument of transfer and
with the form of assignment set forth on the reverse side thereof and the
certificate contained therein duly completed and fully executed;

         (c) subject to Section 6(a) and Section 7(f) hereof, the Company and
the Rights Agent may deem and treat the Person in whose name a Rights
Certificate (or, prior to the Distribution Date, the associated Common Stock
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Stock certificate made by anyone
other than the Company or the Rights Agent) for all purposes whatsoever, and
neither the Company nor the Rights Agent shall be affected by any notice to the
contrary; and

         (d) notwithstanding anything in this Agreement to the contrary, neither
the Company nor the Rights Agent shall have any liability to any holder of a
Right or other Person as a result of its inability to perform any of its
obligations under this Agreement by reason of any preliminary or permanent
injunction or other order, decree, judgment or ruling (whether interlocutory or
final) issued by a court of competent jurisdiction or by a governmental,
regulatory or administrative agency or commission, or any statute, rule,
regulation or executive order promulgated or enacted by any governmental
authority, prohibiting or otherwise restraining performance of such obligation;
provided, however, the Company must use its best efforts to have any such order,
decree, judgment or ruling lifted or otherwise overturned as soon as possible.

         Section 17. Rights Certificate Holder Not Deemed a Stockholder. No
holder, as such, of any Rights Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the number of Fractional
Shares of Preferred Stock or any other securities of the Company that may at any
time be issuable upon the exercise of the Rights represented thereby, nor shall
anything contained herein or in any Rights Certificate be construed to confer
upon the holder of any Rights Certificate, as such, any of the rights of a
stockholder of the Company or any right to vote for the election of directors or
upon any matter submitted to stockholders at any meeting thereof, or to give or
withhold consent to any corporate action, or to receive notice of meetings or
other actions affecting stockholders (except as provided in Section 25 hereof),
or to receive dividends or subscription rights, or otherwise, until the Right or
Rights evidenced by such Rights Certificate shall have been exercised in
accordance with the provisions hereof.

         Section 18. Concerning the Rights Agent.

         (a) The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
disbursements and other reasonable disbursements incurred in the preparation,
delivery, administration, execution and amendment of this Agreement and the
exercise and performance of its duties hereunder. The Company also agrees to
indemnify the Rights Agent for, and to hold it harmless against, any loss,
liability, damage, judgment, fine, penalty, claim, demand, settlement, cost or
expense, incurred without gross






                                       27
   31


negligence, bad faith or willful misconduct (each as finally determined by a
final, non-appealable order, judgment, decree or ruling of a court of competent
jurisdiction) on the part of the Rights Agent, for any action taken, suffered or
omitted by the Rights Agent in connection with the preparation, delivery,
administration, execution and amendment of this Agreement or the exercise and
performance of its duties hereunder, including, without limitation, the costs
and expenses of defending against any claim of liability in the premises. The
indemnity provided herein shall survive the termination of this Agreement, the
termination and the expiration of the Rights, and the resignation or removal of
the Rights Agent. The costs and expenses incurred by the Rights Agent in
enforcing this right of indemnification shall be paid by the Company.

         (b) The Rights Agent shall be fully and completely protected and shall
incur no liability for or in respect of any action taken, suffered or omitted by
it in connection with the acceptance and administration of this Agreement in
reliance upon any Rights Certificate or certificate for Common Stock or for
other securities of the Company, instrument of assignment or transfer, power of
attorney, endorsement, affidavit, letter, notice, direction, consent,
certificate, statement or other paper or document believed by it, after proper
inquiry or examination, to be genuine and to be signed, executed and, where
necessary, guaranteed, verified or acknowledged, by the proper Person or
Persons. The Rights Agent shall not be deemed to have any duty or to have
received any notice unless and until the Company has provided the Rights Agent
with actual written notice.

         Section 19. Merger or Consolidation or Change of Name of Rights Agent.

         (a) Any Person into which the Rights Agent or any successor Rights
Agent may be merged or with which it may be consolidated, or any Person
resulting from any merger or consolidation to which the Rights Agent or any
successor Rights Agent shall be a party, or any Person succeeding to the
corporate trust or shareholder services business of the Rights Agent or any
successor Rights Agent, shall be the successor to the Rights Agent under this
Agreement without the execution or filing of any paper or any further act on the
part of any of the parties hereto; provided, however, that such Person would be
eligible for appointment as a successor Rights Agent under the provisions of
Section 21 hereof. In case at the time such successor Rights Agent shall succeed
to the agency created by this Agreement, any of the Rights Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the countersignature of a predecessor Rights Agent and deliver such Rights
Certificates so countersigned; and in case at that time any of the Rights
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Rights Certificates either in the name of the predecessor or in
the name of the successor Rights Agent; and in all such cases such Rights
Certificates shall have the full force provided in the Rights Certificates and
in this Agreement.

         (b) In case at any time the name of the Rights Agent shall be changed
and at such time any of the Rights Certificates shall have been countersigned
but not delivered, the Rights Agent may adopt the countersignature under its
prior name and deliver Rights Certificates so countersigned; and in case at that
time any of the Rights Certificates shall not have been countersigned, the
Rights Agent may countersign such Rights Certificates either in its prior name
or in its changed name; and in all such cases such Rights Certificates shall
have the full force provided in the Rights Certificates and in this Agreement.



                                       28
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         Section 20. Duties of Rights Agent. The Rights Agent undertakes the
duties and obligations expressly imposed by this Agreement (and no implied
duties or obligations) upon the following terms and conditions, by all of which
the Company and the holders of Rights Certificates, by their acceptance thereof,
shall be bound:

         (a) The Rights Agent may consult with legal counsel (who may be legal
counsel for the Company), and the advice or opinion of such counsel shall be
full and complete authorization and protection to the Rights Agent and the
Rights Agent shall incur no liability for or in respect of any action taken,
suffered or omitted by it in good faith and in accordance with such advice or
opinion.

         (b) Whenever in the performance of its duties under this Agreement the
Rights Agent shall deem it necessary or desirable that any fact or matter
(including, without limitation, the identity of any Acquiring Person and the
determination of "Current Market Price") be proved or established by the Company
prior to taking or suffering (or omitting to take) any action hereunder, such
fact or matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a
certificate signed by the Chairman of the Board, the President, any Vice
President, the Treasurer, any Assistant Treasurer, the Secretary or any
Assistant Secretary of the Company and delivered to the Rights Agent; and such
certificate shall be full and complete protection and authorization to the
Rights Agent for any action taken or suffered (or omitted) in good faith by it
under the provisions of this Agreement in reliance upon such certificate.

         (c) The Rights Agent shall be liable hereunder only for its own gross
negligence, bad faith or willful misconduct each as finally determined by a
final, non-appealable order, judgment, decree or ruling of a court of competent
jurisdiction). Anything in this Agreement to the contrary notwithstanding, in no
event shall the Rights Agent be liable for special, punitive, indirect,
incidental or consequential loss or damage of any kind whatsoever (including,
but not limited to, lost profits), even if the Rights Agent has been advised of
the possibility of such loss or damage. Any liability of the Rights Agent under
this Agreement shall be limited to the amount of fees paid by the Company to the
Rights Agent.

         (d) The Rights Agent shall not be liable for or by reason of any of the
statements of fact or recitals contained in this Agreement or in the Rights
Certificates or be required to verify the same (except as to its
countersignature on such Rights Certificates), but all such statements and
recitals are and shall be deemed to have been made by the Company only.

         (e) The Rights Agent shall not have any liability, nor be under any
responsibility, in respect of the validity of this Agreement or the execution
and delivery hereof (except the due execution and delivery hereof by the Rights
Agent) or in respect of the validity or execution of any Rights Certificate
(except its countersignature thereof); nor shall it be responsible for any
breach by the Company of any covenant or condition contained in this Agreement
or in any Rights Certificate; nor shall it be responsible for any adjustment
required under the provisions of Section 11 or Section 13 hereof or responsible
for the manner, method or amount of any such adjustment or the ascertaining of
the existence of facts that would require any such adjustment (except with
respect to the exercise of Rights evidenced by Rights Certificates after receipt
of actual knowledge of any such adjustment); nor shall it by any act hereunder
be deemed to make any representation or warranty as to the authorization or





                                       29
   33

reservation of any shares of Preferred Stock or Common Stock or other securities
to be issued pursuant to this Agreement or any Rights Certificate or as to
whether any shares of Preferred Stock or Common Stock or other securities will,
when so issued, be validly authorized and issued, fully paid and nonassessable.

         (f) The Company agrees that it will perform, execute, acknowledge and
deliver or cause to be performed, executed, acknowledged and delivered all such
further and other acts, instruments and assurances as may reasonably be required
by the Rights Agent for the carrying out or performing by the Rights Agent of
the provisions of this Agreement.

         (g) The Rights Agent is hereby authorized and directed to accept advice
or instructions with respect to the performance of its duties hereunder from the
Chairman of the Board, the President, any Vice President, the Secretary, any
Assistant Secretary, the Treasurer or any Assistant Treasurer of the Company,
and to apply to such officers for advice or instructions in connection with its
duties, and such advice or instructions shall be full authorization and
protection to the Rights Agent and the Rights Agent shall incur no liability for
or in respect of any action taken or suffered or omitted to be taken by it in
good faith in accordance with the advice or instructions of any such officer.
The Rights Agent shall be fully protected and authorized in relying upon the
most recent instructions received by any such officer.

         (h) The Rights Agent and any stockholder, affiliate, director, officer
or employee of the Rights Agent may buy, sell or deal in any of the Rights or
other securities of the Company or become pecuniarily interested in any
transaction in which the Company may be interested, or contract with or lend
money to the Company or otherwise act as fully and freely as though it were not
Rights Agent under this Agreement. Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Company or for any other Person.

         (i) The Rights Agent may execute and exercise any of the rights or
powers hereby vested in it or perform any duty hereunder either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act, omission, default, neglect or misconduct of any such
attorneys or agents or for any loss to the Company resulting from any such act,
omission, default, neglect or misconduct, absent gross negligence, bad faith or
willful misconduct (each as finally determined by a final, non-appealable order,
judgment, decree or ruling of a court of competent jurisdiction) in the
selection and continued employment thereof.

         (j) No provision of this Agreement shall require the Rights Agent to
expend or risk its own funds or otherwise incur any financial liability in the
performance of any of its duties hereunder or in the exercise of its rights if
it believes that repayment of such funds or adequate indemnification against
such risk or liability is not reasonably assured to it.

         (k) If, with respect to any Rights Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has either not
been properly completed or indicates an affirmative response to clause 1 and/or
2 thereof, the Rights Agent shall not take any further action with respect to
such requested exercise or transfer without first consulting with the Company.



                                       30
   34

         Section 21. Change of Rights Agent. The Rights Agent or any successor
Rights Agent may resign and be discharged from its duties under this Agreement
upon 30 days' notice in writing mailed to the Company, and to each transfer
agent of the Common Stock and the Preferred Stock, by registered or certified
mail, and to the registered holders, if any, of the Rights Certificates by
first-class mail. The Company may remove the Rights Agent or any successor
Rights Agent (with or without cause) upon 30 days' notice in writing, mailed to
the Rights Agent or successor Rights Agent, as the case may be, and to each
transfer agent of the Common Stock and the Preferred Stock, by registered or
certified mail, and to the registered holders of the Rights Certificates, if
any, by first-class mail. If the Rights Agent shall resign or be removed or
shall otherwise become incapable of acting, the Company shall appoint a
successor to the Rights Agent. Notwithstanding the foregoing provisions of this
Section 21, in no event shall the resignation or removal of a Rights Agent be
effective until a successor Rights Agent shall have been appointed and have
accepted such appointment. If the Company shall fail to make such appointment
within a period of 30 days after giving notice of such removal or after it has
been notified in writing of such resignation or incapacity by the resigning or
incapacitated Rights Agent or by the registered holder of a Rights Certificate
(who shall, with such notice, submit his Rights Certificate for inspection by
the Company), then the Rights Agent or the registered holder of any Rights
Certificate may apply to any court of competent jurisdiction for the appointment
of a new Rights Agent. Any successor Rights Agent, whether appointed by the
Company or by such a court, shall be (a) a Person organized and doing business
under the laws of the United States or of the State of Texas (or of any other
state of the United States so long as such corporation is authorized to conduct
a shareholder services business in the State of Texas), in good standing, which
is authorized under such laws to conduct a shareholder services business and is
subject to supervision or examination by federal or state authority and which
has at the time of its appointment as Rights Agent a combined capital and
surplus of at least $50,000,000 or (b) an affiliate of a Person described in
clause (a) of this sentence. After appointment, the successor Rights Agent shall
be vested with the same powers, rights, duties and responsibilities as if it had
been originally named as Rights Agent without further act or deed; but the
predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose. Not later
than the effective date of any such appointment, the Company shall file notice
thereof in writing with the predecessor Rights Agent and each transfer agent of
the Common Stock and the Preferred Stock, and mail a notice thereof in writing
to the registered holders, if any, of the Rights Certificates. Failure to give
any notice provided for in this Section 21, however, or any defect therein,
shall not affect the legality or validity of the resignation or removal of the
Rights Agent or the appointment of the successor Rights Agent, as the case may
be.

         Section 22. Issuance of New Rights Certificates. Notwithstanding any of
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price and the number or kind or class of shares or other
securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement. In addition, in connection
with the issuance or sale of shares of Common Stock following the Distribution
Date and prior to the Expiration Date, the Company (a) shall, with respect to
shares of Common Stock so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement granted or awarded on or prior
to the Distribution Date, or upon the exercise, conversion or exchange of
securities





                                       31
   35


issued by the Company on or prior to the Distribution Date, and (b) may, in any
other case, if deemed necessary or appropriate by the Board of Directors of the
Company, issue Rights Certificates representing the appropriate number of Rights
in connection with such issuance or sale; provided, however, that (i) no such
Rights Certificate shall be issued if, and to the extent that, the Company shall
be advised by counsel that such issuance would create a significant risk of
material adverse tax consequences to the Company or the Person to whom such
Rights Certificate would be issued, and (ii) no such Rights Certificate shall be
issued if, and to the extent that, appropriate adjustment shall otherwise have
been made in lieu of the issuance thereof.

         Section 23. Redemption and Termination.

         (a) The Board of Directors of the Company may, at its option, at any
time prior to the earlier of (i) the close of business on the tenth day
following the first date of public announcement of the occurrence of a Flip-In
Event (or, if such date shall have occurred prior to the Record Date, the close
of business on the tenth day following the Record Date) and (ii) the Expiration
Date, cause the Company to redeem all but not less than all the then outstanding
Rights at a redemption price of $.01 per Right, as such amount may be
appropriately adjusted, if necessary, to reflect any stock split, stock dividend
or similar transaction occurring after the Rights Dividend Declaration Date
(such redemption price being hereinafter referred to as the "Redemption Price");
provided, however, that the Rights may not be redeemed following any merger to
which the Company is a party that (i) occurs when there is an Acquiring Person
and (ii) was not approved (x) prior to the time such Person became an Acquiring
Person by the Board of Directors of the Company and (y) by the stockholders of
the Company at a stockholders' meeting. Notwithstanding anything contained in
this Agreement to the contrary, the Rights shall not be exercisable after the
first occurrence of a Flip-In Event until such time as the Company's right of
redemption hereunder has expired. The Company may, at its option, pay the
Redemption Price in cash, shares of Common Stock (based on the Current Market
Price of the Common Stock at the time of redemption) or any other form of
consideration deemed appropriate by the Board of Directors.

         (b) Immediately upon the effectiveness of the action of the Board of
Directors of the Company ordering the redemption of the Rights (the
effectiveness of which action may be conditioned on the occurrence of one or
more events or on the existence of one or more facts or may be effective at some
future time), evidence of which shall be filed with the Rights Agent and without
any further action and without any notice, the right to exercise the Rights will
terminate and the only right thereafter of the holders of Rights shall be to
receive the Redemption Price for each Right so held. Promptly after the
effectiveness of the action of the Board of Directors ordering the redemption of
the Rights, the Company shall give written notice of such redemption to the
Rights Agent and the registered holders of the then outstanding Rights by
mailing such notice to all such holders at each holder's last address as it
appears upon the registry books of the Rights Agent or, prior to the
Distribution Date, on the registry books of the Company for the Common Stock.
Any notice that is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice. Each such notice of redemption
shall state the method by which the payment of the Redemption Price will be
made.



                                       32
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         Section 24. Exchange.

         (a) The Board of Directors of the Company may, at its option, at any
time and from time to time after the occurrence of a Flip-In Event, exchange all
or part of the then outstanding and exercisable Rights (which shall not include
Rights that have become void pursuant to the provisions of Section 7(e) hereof)
for shares of Common Stock or Common Stock Equivalents or any combination
thereof, at an exchange ratio of one share of Common Stock, or such number of
Common Stock Equivalents or units representing fractions thereof as would be
deemed to have the same value as one share of Common Stock, per Right,
appropriately adjusted, if necessary, to reflect any stock split, stock dividend
or similar transaction occurring after the Rights Dividend Declaration Date
(such exchange ratio being hereinafter referred to as the "Exchange Ratio").
Notwithstanding the foregoing, the Board of Directors may not effect such
exchange at any time after (i) any Person (other than an Exempt Person),
together with all Affiliates and Associates of such Person, becomes the
Beneficial Owner of 50% or more of the shares of Common Stock then outstanding
or (ii) the occurrence of a Flip-Over Event.

         (b) Immediately upon the effectiveness of the action of the Board of
Directors of the Company ordering the exchange of any Rights pursuant to and in
accordance with subsection (a) of this Section 24 (the effectiveness of which
action may be conditioned on the occurrence of one or more events or on the
existence of one or more facts or may be effective at some future time) and
without any further action and without any notice, the right to exercise such
Rights shall terminate and the only right thereafter of a holder of such Rights
shall be to receive that number of shares of Common Stock and/or Common Stock
Equivalents equal to the number of such Rights held by such holder multiplied by
the Exchange Ratio. The Company shall promptly notify the Rights Agent in
writing of such exchange and shall promptly give public notice of any such
exchange; provided, however, that the failure to give, or any defect in, such
notice shall not affect the validity of such exchange. The Company promptly
shall mail a notice of any such exchange to all of the registered holders of
such Rights at their last addresses as they appear upon the registry books of
the Rights Agent. Any notice which is mailed in the manner herein provided shall
be deemed given, whether or not the holder receives the notice. Each such notice
of exchange will state the method by which the exchange of the shares of Common
Stock and/or Common Stock Equivalents for Rights will be effected and, in the
event of any partial exchange, the number of Rights that will be exchanged. Any
partial exchange shall be effected as nearly pro rata as possible based on the
number of Rights (other than Rights that have become void pursuant to the
provisions of Section 7(e) hereof) held by each holder of Rights.

         (c) In the event that the number of shares of Common Stock that are
authorized by the Company's certificate of incorporation but not outstanding or
reserved for issuance for purposes other than upon exercise of the Rights is not
sufficient to permit an exchange of Rights as contemplated in accordance with
this Section 24, the Company may, at its option, take all such action as may be
necessary to authorize additional shares of Common Stock for issuance upon
exchange of the Rights.

         (d) The Company shall not be required to issue fractions of shares of
Common Stock or to distribute certificates or scrip evidencing fractional shares
of Common Stock upon exchange of the Rights. In lieu of such fractional shares
of Common Stock, the








                                       33
   37

Company shall pay to the registered holders of Rights with regard to which such
fractional shares of Common Stock would otherwise be issuable an amount in cash
equal to the same fraction of the value of a whole share of Common Stock. For
purposes of this Section 24, the value of a whole share of Common Stock shall be
the Closing Price per share of Common Stock for the Trading Day immediately
prior to the date of exchange pursuant to this Section 24, and the value of any
Common Stock Equivalent shall be deemed to have the same value as the Common
Stock on such date.

         Section 25. Notice of Certain Events.

         (a) In case the Company shall propose, at any time after the
Distribution Date, (i) to pay any dividend payable in stock of any class to the
holders of Preferred Stock or to make any other distribution to the holders of
Preferred Stock (other than a regular quarterly cash dividend out of earnings or
retained earnings of the Company), or (ii) to offer to the holders of Preferred
Stock rights or warrants to subscribe for or to purchase any additional shares
of Preferred Stock or shares of stock of any class or any other securities,
rights or options, or (iii) to effect any reclassification of its Preferred
Stock (other than a reclassification involving only the subdivision of
outstanding shares of Preferred Stock), or (iv) to effect any consolidation or
merger into or with any other Person (other than a wholly owned Subsidiary of
the Company in a transaction that complies with Section 11(o) hereof), or to
effect any sale, lease or other transfer of all or substantially all the
Company's assets, cash flow or earning power to any other Person or Persons
(other than a wholly owned Subsidiary of the Company in a transaction that
complies with Section 11(o) hereof), or (v) to effect the liquidation,
dissolution or winding up of the Company, then, in each such case, the Company
shall give to the Rights Agent and to each holder of record of a Rights
Certificate, to the extent feasible and in accordance with Section 26 hereof, a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend, distribution of rights or warrants, or the date
on which such reclassification, consolidation, merger, sale, lease, transfer,
liquidation, dissolution or winding up is to take place and the date of
participation therein by the holders of the shares of Preferred Stock, if any
such date is to be fixed, and such notice shall be so given in the case of any
action covered by clause (i) or (ii) above at least 20 days prior to the record
date for determining holders of the shares of Preferred Stock for purposes of
such action, and in the case of any such other action, at least 20 days prior to
the date of the taking of such proposed action or the date of participation
therein by the holders of the shares of Preferred Stock, whichever shall be the
earlier. The failure to give notice required by this Section 25 or any defect
therein shall not affect the legality or validity of the action taken by the
Company or the vote upon any such action.

         (b) In case any Flip-In Event or Flip-Over Event shall occur, then (i)
the Company shall as soon as practicable thereafter give to each registered
holder of a Rights Certificate (or if occurring prior to the Distribution Date,
the registered holders of Common Stock), in accordance with Section 26 hereof, a
notice of the occurrence of such event, which shall specify the event and the
consequences of the event to holders of Rights under Section 11(a)(ii) or
Section 13(a) hereof, and (ii) all references in the preceding paragraph to
Preferred Stock shall be deemed thereafter to refer to Common Stock and/or, if
appropriate, other securities.

         Section 26. Notices. Notices or demands authorized by this Agreement to
be given or made by the Rights Agent or by the holder of any Rights Certificate
to or on the





                                       34
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Company shall be sufficiently given or made if sent by first-class mail, postage
prepaid, addressed (until another address is filed in writing with the Rights
Agent) as follows:

                  Luminex Corporation
                  12212 Technology Blvd.
                  Austin, Texas 78727
                  Attention:  General Counsel

Subject to the provisions of Section 21, any notice or demand authorized by this
Agreement to be given or made by the Company or by the holder of any Rights
Certificate to or on the Rights Agent shall be sufficiently given or made if
sent by first-class mail, postage prepaid, addressed (until another address is
filed in writing with the Company) as follows:

                  Mellon Investor Services LLC
                  600 North Pearl Street, Suite 1010
                  Dallas, Texas 75201
                  Attention:  Relationship Manager

                  with a copy to:

                  Mellon Investor Services LLC
                  85 Challenger Road
                  Ridgefield Park, NJ 07660
                  Attention: General Counsel

Notices or demands authorized by this Agreement to be given or made by the
Company or the Rights Agent to the holder of any Rights Certificate (or, if
prior to the Distribution Date, to the holder of certificates representing
shares of Common Stock) shall be sufficiently given or made if sent by
first-class mail, postage prepaid, addressed to such holder at the address of
such holder as shown on the registry books of the Company.

         Section 27. Supplements and Amendments. Except as provided in the last
sentence of this Section 27, at any time when the Rights are then redeemable,
the Company may in its sole and absolute discretion and the Rights Agent shall,
if the Company so directs, supplement or amend any provision of this Agreement
in any respect without the approval of any holders of Rights or holders of
Common Stock. At any time when the Rights are not redeemable, except as provided
in the last sentence of this Section 27, the Company may and the Rights Agent
shall, if the Company so directs, supplement or amend this Agreement without the
approval of any holders of Rights in order (i) to cure any ambiguity, (ii) to
correct or supplement any provision contained herein that may be defective or
inconsistent with any other provisions herein, (iii) to shorten or lengthen any
time period hereunder or (iv) to change or supplement the provisions hereunder
in any manner that the Company may deem necessary or desirable; provided that no
such amendment or supplement shall materially adversely affect the interests of
the holders of Rights (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person); and further provided that this Agreement may
not be supplemented or amended pursuant to this sentence to lengthen (A) a time
period relating to when the Rights may be redeemed or (B) any other time period
unless the lengthening of such other time period is for the purpose of
protecting, enhancing or clarifying the rights of, and/or the benefits to, the
holders




                                       35
   39


of Rights (other than any Acquiring Person and its Affiliates and Associates).
Upon the delivery of a certificate from an appropriate officer of the Company
which states that the proposed supplement or amendment is in compliance with the
terms of this Section 27, the Rights Agent shall execute such supplement or
amendment; provided, however, that the Rights Agent shall not be obligated to
enter into any such supplement or amendment that affects the Rights Agent's own
rights, duties, obligations, liabilities or immunities under this Agreement.
Notwithstanding anything contained in this Agreement to the contrary, no
supplement or amendment shall be made that decreases the Redemption Price.

         Section 28. Successors. All the covenants and provisions of this
Agreement by or for the benefit of the Company or the Rights Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.

         Section 29. Determinations and Actions by the Board of Directors, etc.
For all purposes of this Agreement, any calculation of the number of shares of
Common Stock outstanding at any particular time, including for purposes of
determining the particular percentage of such outstanding shares of Common Stock
of which any Person is the Beneficial Owner, shall be made in accordance with
the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and Regulations
under the Exchange Act as in effect on the date of this Agreement. The Board of
Directors of the Company (or, as set forth herein, certain specified members
thereof) shall have the exclusive power and authority to administer this
Agreement and to exercise all rights and powers specifically granted to the
Board of Directors of the Company or to the Company, or as may be necessary or
advisable in the administration of this Agreement, including, without
limitation, the right and power to (i) interpret the provisions of this
Agreement and (ii) make all determinations deemed necessary or advisable for the
administration of this Agreement (including, without limitation, a determination
to redeem or not redeem the Rights or to amend this Agreement). All such
actions, calculations, interpretations and determinations (including, for
purposes of clause (y) below, all omissions with respect to the foregoing) that
are done or made by the Board of Directors of the Company in good faith, shall
(x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights, as such, and all other parties, and (y) not subject the
Board of Directors to any liability to the holders of the Rights. The Rights
Agent shall always be entitled to assume that the Company's Board of Directors
acted in good faith and shall be fully protected and incur no liability in
reliance thereon.

         Section 30. Benefits of this Agreement. Nothing in this Agreement shall
be construed to give to any Person other than the Company, the Rights Agent and
the registered holders of the Rights Certificates (and, prior to the
Distribution Date, registered holders of the Common Stock) any legal or
equitable right, remedy or claim under this Agreement; but this Agreement shall
be for the sole and exclusive benefit of the Company, the Rights Agent and the
registered holders of the Rights Certificates (and, prior to the Distribution
Date, registered holders of the Common Stock).



                                       36
   40

         Section 31. Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
provided, however, that notwithstanding anything in this Agreement to the
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and the Board of
Directors of the Company determines in its good faith judgment that severing the
invalid language from this Agreement would adversely affect the purpose or
effect of this Agreement, then, unless there has occurred any merger referred to
in the proviso to the first sentence of Section 23(a), the right of redemption
set forth in Section 23 hereof shall be reinstated and shall not expire until
the close of business on the tenth day following the date of such determination
by the Board of Directors of the Company or, if earlier, immediately prior to
any such merger. Without limiting the foregoing, if any provision requiring that
a determination be made by less than the entire Board of Directors of the
Company is held by a court of competent jurisdiction or other authority to be
invalid, void or unenforceable, such determination shall then be made by the
entire Board of Directors of the Company.

         Section 32. Governing Law. This Agreement, each Right and each Rights
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the State of Delaware and for all purposes shall be governed by and
construed in accordance with the laws of such State applicable to contracts made
and to be performed entirely within such State; provided, however, that all
provisions regarding the rights, duties and obligations of the Rights Agent
shall be governed by and construed in accordance with the laws of the State of
New York applicable to contracts made and to be performed entirely within such
State.

         Section 33. Counterparts. This Agreement may be executed in any number
of counterparts and each of such counterparts shall for all purposes be deemed
to be an original, and all such counterparts shall together constitute but one
and the same instrument.

         Section 34. Descriptive Headings. Descriptive headings of the several
Sections of this Agreement are inserted for convenience only and shall not
control or affect the meaning or construction of any of the provisions hereof.


     [Remainder of page intentionally left blank - signature page follows.]



                                       37
   41




         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.

                                LUMINEX CORPORATION


                                By
                                  ----------------------------------------------
                                Name:  Michael L. Bengtson
                                Title: Executive Vice President, General Counsel
                                       & Secretary


                                MELLON INVESTOR SERVICES LLC


                                By
                                  ----------------------------------------------
                                Name:  Tim Reagan
                                Title: Relationship Manager




                                       38
   42

                                                                       Exhibit A



                                     FORM OF
                           CERTIFICATE OF DESIGNATIONS

                                       of

                  Series A Junior Participating Preferred Stock

                                       of

                               LUMINEX CORPORATION

             Pursuant to Section 151 of the General Corporation Law
                            of the State of Delaware

                  LUMINEX CORPORATION, a corporation organized and existing
under the General Corporation Law of the State of Delaware, in accordance with
the provisions of Section 103 thereof, DOES HEREBY CERTIFY:

                  That pursuant to the authority vested in the Board of
Directors in accordance with the provisions of the Restated Certificate of
Incorporation of the said Corporation, the said Board of Directors on June 20,
2001 adopted the following resolution creating a series of 2,000,000 shares of
Preferred Stock designated as "Series A Junior Participating Preferred Stock":

                  RESOLVED, that pursuant to the authority vested in the Board
         of Directors of this Corporation in accordance with the provisions of
         the Restated Certificate of Incorporation, a series of Preferred Stock,
         par value $.001 per share, of the Corporation be and hereby is created,
         and that the designation and number of shares thereof and the voting
         and other powers, preferences and relative, participating, optional or
         other rights of the shares of such series and the qualifications,
         limitations and restrictions thereof are as follows:

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

         1. Designation and Amount. There shall be a series of Preferred Stock
that shall be designated as "Series A Junior Participating Preferred Stock," and
the number of shares constituting such series shall be 2,000,000. Such number of
shares may be increased or decreased by resolution of the Board of Directors;
provided, however, that no decrease shall reduce the number of shares of Series
A Junior Participating Preferred Stock to less than the number of shares then
issued and outstanding plus the number of shares issuable upon exercise of
outstanding rights, options or warrants or upon conversion of outstanding
securities issued by the Corporation.



                                      A-1
   43

         2. Dividends and Distributions.

            (A) Subject to the prior and superior rights of the holders of any
shares of any series of Preferred Stock ranking prior and superior to the shares
of Series A Junior Participating Preferred Stock with respect to dividends, the
holders of shares of Series A Junior Participating Preferred Stock, in
preference to the holders of shares of any class or series of stock of the
Corporation ranking junior to the Series A Junior Participating Preferred Stock,
shall be entitled to receive, when, as and if declared by the Board of Directors
out of funds legally available for the purpose, quarterly dividends payable in
cash on the last day of March, June, September and December in each year (each
such date being referred to herein as a "Quarterly Dividend Payment Date"),
commencing on the first Quarterly Dividend Payment Date after the first issuance
of a share or fraction of a share of Series A Junior Participating Preferred
Stock, in an amount per share (rounded to the nearest cent) equal to the greater
of (a) $2.00 or (b) the Adjustment Number (as defined below) times the aggregate
per share amount of all cash dividends, and the Adjustment Number times the
aggregate per share amount (payable in kind) of all non-cash dividends or other
distributions other than a dividend payable in shares of Common Stock or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock, par value $.001 per share, of the
Corporation (the "Common Stock") since the immediately preceding Quarterly
Dividend Payment Date, or, with respect to the first Quarterly Dividend Payment
Date, since the first issuance of any share or fraction of a share of Series A
Junior Participating Preferred Stock. The "Adjustment Number" shall initially be
100. In the event the Corporation shall at any time after June 20, 2001 (the
"Rights Declaration Date") (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock or (iii)
combine the outstanding Common Stock into a smaller number of shares, then in
each such case the Adjustment Number in effect immediately prior to such event
shall be adjusted by multiplying such Adjustment Number by a fraction the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

            (B) The Corporation shall declare a dividend or distribution on the
Series A Junior Participating Preferred Stock as provided in paragraph (A) above
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock); provided that, in the
event no dividend or distribution shall have been declared on the Common Stock
during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $2.00 per share on the
Series A Junior Participating Preferred Stock shall nevertheless be payable on
such subsequent Quarterly Dividend Payment Date.

            (C) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Junior Participating Preferred Stock from the Quarterly
Dividend Payment Date next preceding the date of issue of such shares of Series
A Junior Participating Preferred Stock, unless the date of issue of such shares
is prior to the record date for the first Quarterly Dividend Payment Date, in
which case dividends on such shares shall begin to accrue from the date of issue
of such shares, or unless the date of issue is a Quarterly Dividend Payment Date
or is a date after the record date for the determination of holders of shares of
Series A Junior Participating Preferred Stock entitled to receive a quarterly
dividend and before such Quarterly Dividend Payment Date, in either of which
events such dividends shall begin to accrue and be cumulative




                                      A-2
   44


from such Quarterly Dividend Payment Date. Accrued but unpaid dividends shall
not bear interest. Dividends paid on the shares of Series A Junior Participating
Preferred Stock in an amount less than the total amount of such dividends at the
time accrued and payable on such shares shall be allocated pro rata on a
share-by-share basis among all such shares at the time outstanding. The Board of
Directors may fix a record date for the determination of holders of shares of
Series A Junior Participating Preferred Stock entitled to receive payment of a
dividend or distribution declared thereon, which record date shall be no more
than 30 days prior to the date fixed for the payment thereof.

         3. Voting Rights. The holders of shares of Series A Junior
Participating Preferred Stock shall have the following voting rights:

            (A) Each share of Series A Junior Participating Preferred Stock
shall entitle the holder thereof to a number of votes equal to the Adjustment
Number on all matters submitted to a vote of the stockholders of the
Corporation.

            (B) Except as otherwise provided herein, in the Restated Certificate
of Incorporation or by law, the holders of shares of Series A Junior
Participating Preferred Stock, the holders of shares of any other class or
series entitled to vote with the Common Stock and the holders of shares of
Common Stock shall vote together as one class on all matters submitted to a vote
of stockholders of the Corporation.

            (C) Except as set forth herein, holders of Series A Junior
Participating Preferred Stock shall have no special voting rights and their
consent shall not be required (except to the extent they are entitled to vote
with holders of Common Stock as set forth herein) for taking any corporate
action.

         4. Certain Restrictions.

            (A) Whenever quarterly dividends or other dividends or distributions
payable on the Series A Junior Participating Preferred Stock as provided in
Section 2 are in arrears, thereafter and until all accrued and unpaid dividends
and distributions, whether or not declared, on shares of Series A Junior
Participating Preferred Stock outstanding shall have been paid in full, the
Corporation shall not

                (i) declare or pay dividends on, make any other distributions
     on, or redeem or purchase or otherwise acquire for consideration any shares
     of stock ranking junior (either as to dividends or upon liquidation,
     dissolution or winding up) to the Series A Junior Participating Preferred
     Stock;

                (ii) declare or pay dividends on or make any other distributions
     on any shares of stock ranking on a parity (either as to dividends or upon
     liquidation, dissolution or winding up) with the Series A Junior
     Participating Preferred Stock, except dividends paid ratably on the Series
     A Junior Participating Preferred Stock and all such parity stock on which
     dividends are payable or in arrears in proportion to the total amounts to
     which the holders of all such shares are then entitled; or



                                      A-3
   45

                (iii) redeem or purchase or otherwise acquire for consideration
     any shares of Series A Junior Participating Preferred Stock, or any shares
     of stock ranking on a parity with the Series A Junior Participating
     Preferred Stock, except in accordance with a purchase offer made in writing
     or by publication (as determined by the Board of Directors) to all holders
     of Series A Junior Participating Preferred Stock, or to all such holders
     and the holders of any such shares ranking on a parity therewith, upon such
     terms as the Board of Directors, after consideration of the respective
     annual dividend rates and other relative rights and preferences of the
     respective series and classes, shall determine in good faith will result in
     fair and equitable treatment among the respective series or classes.

         (B) The Corporation shall not permit any subsidiary of the Corporation
to purchase or otherwise acquire for consideration any shares of stock of the
Corporation unless the Corporation could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

            5. Reacquired Shares. Any shares of Series A Junior Participating
Preferred Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to any conditions and restrictions on issuance set forth
herein.

            6. Liquidation, Dissolution or Winding Up. (A) Upon any liquidation
(voluntary or otherwise), dissolution or winding up of the Corporation, no
distribution shall be made to the holders of shares of stock ranking junior
(either as to dividends or upon liquidation, dissolution or winding up) to the
Series A Junior Participating Preferred Stock unless, prior thereto, the holders
of shares of Series A Junior Participating Preferred Stock shall have received
$100 per share, plus an amount equal to accrued and unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment (the
"Series A Junior Participating Preferred Stock Liquidation Preference").
Following the payment of the full amount of the Series A Junior Participating
Preferred Stock Liquidation Preference, no additional distributions shall be
made to the holders of shares of Series A Junior Participating Preferred Stock
unless, prior thereto, the holders of shares of Common Stock shall have received
an amount per share (the "Common Adjustment") equal to the quotient obtained by
dividing (i) the Series A Junior Participating Preferred Stock Liquidation
Preference by (ii) the Adjustment Number. Following the payment of the full
amount of the Series A Junior Participating Preferred Stock Liquidation
Preference and the Common Adjustment in respect of all outstanding shares of
Series A Junior Participating Preferred Stock and Common Stock, respectively,
holders of Series A Junior Participating Preferred Stock and holders of shares
of Common Stock shall, subject to the prior rights of all other series of
Preferred Stock, if any, ranking prior thereto, receive their ratable and
proportionate share of the remaining assets to be distributed in the ratio of
the Adjustment Number to 1 with respect to such Series A Junior Participating
Preferred Stock and Common Stock, on a per share basis, respectively.

            (B) In the event, however, that there are not sufficient assets
available to permit payment in full of the Series A Junior Participating
Preferred Stock Liquidation Preference and the liquidation preferences of all
other series of Preferred Stock, if any, that rank





                                      A-4
   46


on a parity with the Series A Junior Participating Preferred Stock, then such
remaining assets shall be distributed ratably to the holders of such parity
shares in proportion to their respective liquidation preferences. In the event,
however, that there are not sufficient assets available to permit payment in
full of the Common Adjustment, then such remaining assets shall be distributed
ratably to the holders of Common Stock.

            (C) Neither the merger or consolidation of the Corporation into or
with another corporation nor the merger or consolidation of any other
corporation into or with the Corporation shall be deemed to be a liquidation,
dissolution or winding up of the Corporation within the meaning of this Section
6, but the sale, lease or conveyance of all or substantially all the
Corporation's assets shall be deemed to be a liquidation, dissolution or winding
up of the Corporation within the meaning of this Section 6.

         7. Consolidation, Merger, etc. In case the Corporation shall enter into
any consolidation, merger, combination or other transaction in which the shares
of Common Stock are exchanged for or changed into other stock or securities,
cash and/or any other property, then in any such case each share of Series A
Junior Participating Preferred Stock shall at the same time be similarly
exchanged or changed in an amount per share equal to the Adjustment Number times
the aggregate amount of stock, securities, cash and/or any other property
(payable in kind), as the case may be, into which or for which each share of
Common Stock is changed or exchanged.

         8. Redemption. (A) The Corporation, at its option, may redeem shares of
the Series A Junior Participating Preferred Stock in whole at any time and in
part from time to time, at a redemption price equal to the Adjustment Number
times the current per share market price (as such term is hereinafter defined)
of the Common Stock on the date of the mailing of the notice of redemption,
together with unpaid accumulated dividends to the date of such redemption. The
"current per share market price" on any date shall be deemed to be the average
of the closing price per share of such Common Stock for the ten consecutive
Trading Days (as such term is hereinafter defined) immediately prior to such
date; provided, however, that in the event that the current per share market
price of the Common Stock is determined during a period following the
announcement of (A) a dividend or distribution on the Common Stock other than a
regular quarterly cash dividend or (B) any subdivision, combination or
reclassification of such Common Stock and the ex-dividend date for such dividend
or distribution, or the record date for such subdivision, combination or
reclassification, shall not have occurred prior to the commencement of such ten
Trading Day period, then, and in each such case, the current per share market
price shall be properly adjusted to take into account ex-dividend trading. The
closing price for each day shall be the last sales price, regular way, or, in
case no such sale takes place on such day, the average of the closing bid and
asked prices, regular way, in either case as reported in the principal
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange, or, if the Common Stock is not listed or
admitted to trading on the New York Stock Exchange, on the principal national
securities exchange on which the Common Stock is listed or admitted to trading,
or, if the Common Stock is not listed or admitted to trading on any national
securities exchange but sales price information is reported for such security,
as reported by the National Association of Securities Dealers, Inc. Automated
Quotations System ("NASDAQ") or such other self-regulatory organization or
registered securities information processor (as such terms are used under the
Securities Exchange Act of 1934, as amended) that then reports information
concerning the Common Stock, or, if sales price




                                      A-5
   47


information is not so reported, the average of the high bid and low asked prices
in the over-the-counter market on such day, as reported by NASDAQ or such other
entity, or, if on any such date the Common Stock is not quoted by any such
entity, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Common Stock selected by the
Board of Directors of the Corporation. If on any such date no such market maker
is making a market in the Common Stock, the fair value of the Common Stock on
such date as determined in good faith by the Board of Directors of the
Corporation shall be used. The term "Trading Day" shall mean a day on which the
principal national securities exchange on which the Common Stock is listed or
admitted to trading is open for the transaction of business, or, if the Common
Stock is not listed or admitted to trading on any national securities exchange
but is quoted by NASDAQ, a day on which NASDAQ reports trades, or, if the Common
Stock is not so quoted, a Monday, Tuesday, Wednesday, Thursday or Friday on
which banking institutions in the State of Texas are not authorized or obligated
by law or executive order to close.

            (B) In the event that fewer than all the outstanding shares of the
Series A Junior Participating Preferred Stock are to be redeemed, the number of
shares to be redeemed shall be determined by the Board of Directors and the
shares to be redeemed shall be determined by lot or pro rata as may be
determined by the Board of Directors or by any other method that may be
determined by the Board of Directors in its sole discretion to be equitable.

            (C) Notice of any such redemption shall be given by mailing to the
holders of the shares of Series A Junior Participating Preferred Stock to be
redeemed a notice of such redemption, first class postage prepaid, not later
than the fifteenth day and not earlier than the sixtieth day before the date
fixed for redemption, at their last address as the same shall appear upon the
books of the Corporation. Each such notice shall state: (i) the redemption date;
(ii) the number of shares to be redeemed and, if fewer than all the shares held
by such holder are to be redeemed, the number of such shares to be redeemed from
such holder; (iii) the redemption price; (iv) the place or places where
certificates for such shares are to be surrendered for payment of the redemption
price; and (v) that dividends on the shares to be redeemed will cease to accrue
on the close of business on such redemption date. Any notice that is mailed in
the manner herein provided shall be conclusively presumed to have been duly
given, whether or not the stockholder received such notice, and failure duly to
give such notice by mail, or any defect in such notice, to any holder of Series
A Junior Participating Preferred Stock shall not affect the validity of the
proceedings for the redemption of any other shares of Series A Junior
Participating Preferred Stock that are to be redeemed. On or after the date
fixed for redemption as stated in such notice, each holder of the shares called
for redemption shall surrender the certificate evidencing such shares to the
Corporation at the place designated in such notice and shall thereupon be
entitled to receive payment of the redemption price. If fewer than all the
shares represented by any such surrendered certificate are redeemed, a new
certificate shall be issued representing the unredeemed shares.

            (D) The shares of Series A Junior Participating Preferred Stock
shall not be subject to the operation of any purchase, retirement or sinking
fund.

         9. Ranking. The Series A Junior Participating Preferred Stock shall
rank junior to all other series of the Corporation's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise, and shall rank senior to the Common Stock
as to such matters.



                                      A-6
   48

         10. Amendment. At any time that any shares of Series A Junior
Participating Preferred Stock are outstanding, the Restated Certificate of
Incorporation of the Corporation shall not be amended in any manner which would
materially alter or change the powers, preferences or special rights of the
Series A Junior Participating Preferred Stock so as to affect them adversely
without the affirmative vote of the holders of two-thirds or more of the
outstanding shares of Series A Junior Participating Preferred Stock, voting
separately as a class.

         11. Fractional Shares. Series A Junior Participating Preferred Stock
may be issued in fractions of a share that shall entitle the holder, in
proportion to such holder's fractional shares, to exercise voting rights,
receive dividends, participate in distributions and to have the benefit of all
other rights of holders of Series A Junior Participating Preferred Stock.

            IN WITNESS WHEREOF, the undersigned has executed this Certificate
and does affirm the foregoing as true this 20th day of June, 2001.

                                       LUMINEX CORPORATION


                                       By:
                                          --------------------------------------
                                           Michael L. Bengtson,
                                           Executive Vice President,
                                           General Counsel & Secretary




                                      A-7
   49


                                                                       EXHIBIT B



                          [Form of Rights Certificate]


Certificate No. R-                                               ________ Rights


NOT EXERCISABLE AFTER MAY 24, 2011 OR EARLIER IF REDEEMED OR EXCHANGED BY THE
COMPANY. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT
$.01 PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN
CIRCUMSTANCES SET FORTH IN THE RIGHTS AGREEMENT, RIGHTS BENEFICIALLY OWNED BY OR
TRANSFERRED TO ANY PERSON WHO IS, WAS OR BECOMES AN ACQUIRING PERSON OR AN
AFFILIATE OR ASSOCIATE THEREOF (AS SUCH TERMS ARE DEFINED IN THE RIGHTS
AGREEMENT) AND CERTAIN TRANSFEREES THEREOF WILL BECOME NULL AND VOID AND WILL NO
LONGER BE TRANSFERABLE.

                               RIGHTS CERTIFICATE

                               LUMINEX CORPORATION


         This certifies that _____________________, or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of June 20, 2001 as it may from time to time be
supplemented or amended (the "Rights Agreement"), between Luminex Corporation, a
Delaware corporation (the "Company"), and Mellon Investor Services LLC, a New
Jersey limited liability company (the "Rights Agent"), to purchase from the
Company at any time prior to 5:00 p.m. (central standard time) on June 20, 2011
at the principal office or offices of the Rights Agent designated for such
purpose, or its successors as Rights Agent, one one-hundredth of a fully paid,
nonassessable share (a "Fractional Share") of Series A Junior Participating
Preferred Stock, par value $.001 per share (the "Preferred Stock"), of the
Company, at a purchase price of $100 per one one-hundredth of a share (the
"Purchase Price"), upon presentation and surrender of this Rights Certificate
with the Form of Election to Purchase and related Certificate set forth on the
reverse hereof duly executed. The Purchase Price may be paid in cash or by
certified check, cashier's or official bank check or bank draft payable to the
order of the Company or the Rights Agent. The number of Rights evidenced by this
Rights Certificate (and the number of shares that may be purchased upon exercise
thereof) set forth above, and the Purchase Price per Fractional Share set forth
above, are the number and Purchase Price as of June 20, 2001, based on the
Preferred Stock as constituted at such date. The Company reserves the right to
require prior to the occurrence of a Triggering Event (as such term is defined
in the Rights Agreement) that a number of Rights be exercised so that only whole
shares of Preferred Stock will be issued.



                                      B-1
   50

         From and after the first occurrence of a Triggering Event (as such term
is defined in the Rights Agreement), if the Rights evidenced by this Rights
Certificate are beneficially owned by or transferred to (i) an Acquiring Person
or an Associate or Affiliate of an Acquiring Person (as such terms are defined
in the Rights Agreement), (ii) a transferee of any such Acquiring Person,
Associate or Affiliate, or (iii) under certain circumstances specified in the
Rights Agreement, a transferee of a person who, concurrently with or after such
transfer, became an Acquiring Person or an Affiliate or Associate of an
Acquiring Person, such Rights shall, with certain exceptions, become null and
void in the circumstances set forth in the Rights Agreement, and no holder
hereof shall have any rights whatsoever with respect to such Rights from and
after the occurrence of such Triggering Event.

         As provided in the Rights Agreement, the Purchase Price and the number
and kind of shares of Preferred Stock or other securities or assets that may be
purchased upon the exercise of the Rights evidenced by this Rights Certificate
are subject to modification and adjustment upon the happening of certain events,
including Triggering Events.

         This Rights Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, which terms, provisions and conditions are
hereby incorporated herein by reference and made a part hereof and to which
Rights Agreement reference is hereby made for a full description of the rights,
limitations of rights, obligations, duties and immunities hereunder of the
Rights Agent, the Company and the holders of the Rights Certificates, which
limitations of rights include the temporary suspension of the exercisability of
such Rights under the specific circumstances set forth in the Rights Agreement.
Copies of the Rights Agreement are on file at the above-mentioned office of the
Rights Agent and are also available upon written request to the Company.

         This Rights Certificate, with or without other Rights Certificates,
upon surrender at the principal office or offices of the Rights Agent designated
for such purpose, may be exchanged for another Rights Certificate or Rights
Certificates of like tenor and date evidencing Rights entitling the holder to
purchase a like aggregate number of Fractional Shares of Preferred Stock as the
Rights evidenced by the Rights Certificate or Rights Certificates surrendered
shall have entitled such holder to purchase. If this Rights Certificate shall be
exercised in part, the holder shall be entitled to receive upon surrender hereof
another Rights Certificate or Rights Certificates for the number of whole Rights
not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Certificate (i) may be redeemed by the Company at its option at a
redemption price of $.01 per Right, payable, at the election of the Company, in
cash or shares of Common Stock or such other consideration as the Board of
Directors may determine, at any time prior to the earlier of the close of
business on (a) the tenth day following the first public announcement of the
occurrence of a Flip-In Event (as such time period may be extended or shortened
pursuant to the Rights Agreement) and (b) the Expiration Date (as such term is
defined in the Rights Agreement) or (ii) may be exchanged in whole or in part
for shares of Common Stock and/or other equity securities of the Company deemed
to have the same value as shares of Common Stock, at any time prior to a
person's becoming the beneficial owner of 50% or more of the shares of Common
Stock outstanding or the occurrence of a Flip-Over Event.



                                      B-2
   51

         No fractional shares of Preferred Stock are required to be issued upon
the exercise of any Right or Rights evidenced hereby (other than, except as set
forth above, fractions that are integral multiples of a Fractional Share of
Preferred Stock, which may, at the election of the Company, be evidenced by
depositary receipts), but in lieu thereof a cash payment may be made, as
provided in the Rights Agreement.

         No holder of this Rights Certificate, as such, shall be entitled to
vote or receive dividends or be deemed for any purpose the holder of shares of
Preferred Stock or of any other securities of the Company that may at any time
be issuable on the exercise hereof, nor shall anything contained in the Rights
Agreement or herein be construed to confer upon the holder hereof, as such, any
of the rights of a stockholder of the Company or any right to vote for the
election of directors or upon any matter submitted to stockholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting stockholders (except as
provided in the Rights Agreement), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by this Rights
Certificate shall have been exercised as provided in the Rights Agreement.

         This Rights Certificate shall not be valid or obligatory for any
purpose until it shall have been countersigned by the Rights Agent.

         WITNESS the facsimile signature of the proper officers of the Company
and its corporate seal.

Dated as of July 2, 2001


ATTEST:                                 LUMINEX CORPORATION


                                        By
- -------------------------------            -------------------------------------
Secretary                                  Title:



Countersigned:

MELLON INVESTOR SERVICES LLC



By
  ----------------------------------
   Authorized Signature


                                      B-3
   52


                  [Form of Reverse Side of Rights Certificate]


                               FORM OF ASSIGNMENT


         (To be executed by the registered holder if such holder desires
          to transfer any Rights evidenced by the Rights Certificate.)


FOR VALUE RECEIVED ________________________________________ hereby sells,
assigns and transfers unto______________________________________________________
________________________________________________________________________________
                  (Please print name and address of transferee)
_________ Rights evidenced by this Rights Certificate, together with all right,
title and interest therein, and does hereby irrevocably constitute and appoint
__________________ Attorney, to transfer the said Rights on the books of the
within-named Company, with full power of substitution.


Dated: _________________, 200__


                                             -----------------------------------
                                             Signature


Signature Guaranteed:

Signatures must be guaranteed by a member firm of a national securities
exchange, a member of the National Association of Securities Dealers, Inc., a
commercial bank or trust company having an office or correspondent in the United
States or another eligible guarantor institution (as defined pursuant to Rule
17Ad-15 under the Securities Exchange Act of 1934, as amended).





                                      B-4
   53


                                   CERTIFICATE

         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1) the Rights evidenced by this Rights Certificate [ ] are [ ] are not
being sold, assigned and transferred by or on behalf of a Person who is or was
an Acquiring Person or an Affiliate or Associate of an Acquiring Person (as such
terms are defined pursuant to the Rights Agreement);

         (2) after due inquiry and to the best knowledge of the undersigned, it
[ ] did [ ] did not acquire the Rights evidenced by this Rights Certificate from
any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of an Acquiring Person or who is a direct or indirect
transferee of an Acquiring Person or of an Affiliate or Associate of an
Acquiring Person.

Dated: _____________, 200__
                                            ------------------------------------
                                            Signature

Signature Guaranteed:

Signatures must be guaranteed by a member firm of a national securities
exchange, a member of the National Association of Securities Dealers, Inc., a
commercial bank or trust company having an office or correspondent in the United
States or another eligible guarantor institution (as defined pursuant to Rule
17Ad-15 under the Securities Exchange Act of 1934, as amended).

                                     NOTICE

         The signatures to the foregoing Assignment and Certificate must
correspond to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or any change whatsoever.



                                      B-5
   54


                          FORM OF ELECTION TO PURCHASE

                  (To be executed if holder desires to exercise
                 Rights represented by the Rights Certificate.)

To: LUMINEX CORPORATION

         The undersigned hereby irrevocably elects to exercise _________ Rights
represented by this Rights Certificate to purchase the shares of Preferred Stock
issuable upon the exercise of the Rights (or such other securities of the
Company or of any other person that may be issuable upon the exercise of the
Rights) and requests that certificates for such shares (or other securities) be
issued in the name of and delivered to:

Please insert social security
or other identifying number

- --------------------------------------------------------------------------------
                         (Please print name and address)

- --------------------------------------------------------------------------------

         If such number of Rights shall not be all the Rights evidenced by this
Rights Certificate, a new Rights Certificate for the balance of such Rights
shall be registered in the name of and delivered to:

Please insert social security
or other identifying number

- --------------------------------------------------------------------------------
                         (Please print name and address)

- --------------------------------------------------------------------------------

Dated: ____________, 200__

                                          --------------------------------------
                                          Signature

Signature Guaranteed:

Signatures must be guaranteed by a member firm of a national securities
exchange, a member of the National Association of Securities Dealers, Inc., a
commercial bank or trust company having an office or correspondent in the United
States or another eligible guarantor institution (as defined pursuant to Rule
17Ad-15 under the Securities Exchange Act of 1934, as amended).



                                      B-6
   55


                                   CERTIFICATE

    The undersigned hereby certifies by checking the appropriate boxes that:

         (1) the Rights evidenced by this Rights Certificate [ ] are [ ] are not
being exercised by or on behalf of a Person who is or was an Acquiring Person or
an Affiliate or Associate of an Acquiring Person (as such terms are defined
pursuant to the Rights Agreement);

         (2) after due inquiry and to the best knowledge of the undersigned, it
[ ] did [ ] did not acquire the Rights evidenced by this Rights Certificate from
any Person who is, was or became an Acquiring Person or an Affiliate or
Associate of an Acquiring Person or who is a direct or indirect transferee of an
Acquiring Person or of an Affiliate or Associate of an Acquiring Person.

Dated: _____________, 200__
                                               ---------------------------------
                                               Signature


Signature Guaranteed:

Signatures must be guaranteed by a member firm of a national securities
exchange, a member of the National Association of Securities Dealers, Inc., a
commercial bank or trust company having an office or correspondent in the United
States or another eligible guarantor institution (as defined pursuant to Rule
17Ad-15 under the Securities Exchange Act of 1934, as amended).


                                     NOTICE

                  The signatures to the foregoing Election to Purchase and
Certificate must correspond to the name as written upon the face of this Rights
Certificate in every particular, without alteration or enlargement or any change
whatsoever.





                                      B-7
   56



                                                                       EXHIBIT C

UNDER CERTAIN CIRCUMSTANCES SET FORTH IN THE RIGHTS AGREEMENT, RIGHTS
BENEFICIALLY OWNED BY OR TRANSFERRED TO ANY PERSON WHO IS, WAS OR BECOMES AN
ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE THEREOF (AS SUCH TERMS ARE DEFINED
IN THE RIGHTS AGREEMENT), AND CERTAIN TRANSFEREES THEREOF, WILL BECOME NULL AND
VOID AND WILL NO LONGER BE TRANSFERABLE.


                                SUMMARY OF RIGHTS

         On June 20, 2001, the Board of Directors of Luminex Corporation (the
"Company") declared a dividend of one right ("Right") for each outstanding share
of the Company's Common Stock, par value $.001 per share ("Common Stock"), to
stockholders of record at the close of business on July 2, 2001. Each Right
entitles the registered holder to purchase from the Company a unit consisting of
one one-hundredth of a share (a "Fractional Share") of Series A Junior
Participating Preferred Stock, par value $.001 per share (the "Preferred
Stock"), at a purchase price of $100 per Fractional Share, subject to adjustment
(the "Purchase Price"). The description and terms of the Rights are set forth in
a Rights Agreement dated as of June 20, 2001, as it may from time to time be
supplemented or amended (the "Rights Agreement") between the Company and Mellon
Investor Services LLC, as Rights Agent.

         Initially, the Rights will be attached to all certificates representing
outstanding shares of Common Stock, and no separate certificates for the Rights
("Rights Certificates") will be distributed. The Rights will separate from the
Common Stock and a "Distribution Date" will occur, with certain exceptions, upon
the earlier of (i) ten days following a public announcement that a person or
group of affiliated or associated persons (an "Acquiring Person") has acquired,
or obtained the right to acquire, beneficial ownership of 20% or more of the
outstanding shares of Common Stock (the date of the announcement being the
"Stock Acquisition Date"), or (ii) ten business days following the commencement
of a tender offer or exchange offer that would result in a person's becoming an
Acquiring Person. In certain circumstances, the Distribution Date may be
deferred by the Board of Directors. Certain inadvertent acquisitions will not
result in a person's becoming an Acquiring Person if the person promptly divests
itself of sufficient Common Stock. Until the Distribution Date, (a) the Rights
will be evidenced by the Common Stock certificates (together with a copy of this
Summary of Rights or bearing the notation referred to below) and will be
transferred with and only with such Common Stock certificates, (b) new Common
Stock certificates issued after July 2, 2001 will contain a notation
incorporating the Rights Agreement by reference and (c) the surrender for
transfer of any certificate for Common Stock (with or without a copy of this
Summary of Rights) will also constitute the transfer of the Rights associated
with the Common Stock represented by such certificate.

         The Rights are not exercisable until the Distribution Date and will
expire at the close of business on June 20, 2011, unless earlier redeemed or
exchanged by the Company as described below.

         As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to holders of record of Common Stock as of the close of business
on the Distribution Date and, from and after the Distribution Date, the separate
Rights Certificates alone will




                                      C-1
   57

represent the Rights. All shares of Common Stock issued prior to the
Distribution Date will be issued with Rights. Shares of Common Stock issued
after the Distribution Date in connection with certain employee benefit plans or
upon conversion of certain securities will be issued with Rights. Except as
otherwise determined by the Board of Directors, no other shares of Common Stock
issued after the Distribution Date will be issued with Rights.

         In the event (a "Flip-In Event") that a person becomes an Acquiring
Person (except pursuant to a tender or exchange offer for all outstanding shares
of Common Stock at a price and on terms that a majority of the independent
directors of the Company determines to be fair to and otherwise in the best
interests of the Company and its stockholders (a "Permitted Offer")), each
holder of a Right will thereafter have the right to receive, upon exercise of
such Right, a number of shares of Common Stock (or, in certain circumstances,
cash, property or other securities of the Company) having a Current Market Price
(as defined in the Rights Agreement) equal to two times the exercise price of
the Right. Notwithstanding the foregoing, following the occurrence of any
Triggering Event, all Rights that are, or (under certain circumstances specified
in the Rights Agreement) were, beneficially owned by or transferred to an
Acquiring Person (or by certain related parties) will be null and void in the
circumstances set forth in the Rights Agreement. However, Rights are not
exercisable following the occurrence of any Flip-In Event until such time as the
Rights are no longer redeemable by the Company as set forth below.

         For example, at an exercise price of $100 per Right, each Right not
owned by an Acquiring Person (or by certain related parties) following an event
set forth in the preceding paragraph would entitle its holder to purchase $200
worth of Common Stock (or other consideration, as noted above), based upon its
then Current Market Price, for $100. Assuming that the Common Stock had a
Current Market Price of $20 per share at such time, the holder of each valid
Right would be entitled to purchase 10 shares of Common Stock for $100.

         In the event (a "Flip-Over Event") that, at any time from and after the
time an Acquiring Person becomes such, (i) the Company is acquired in a merger
or other business combination transaction (other than certain mergers that
follow a Permitted Offer), or (ii) 50% or more of the Company's assets, cash
flow or earning power is sold or transferred, each holder of a Right (except
Rights that are voided as set forth above) shall thereafter have the right to
receive, upon exercise, a number of shares of common stock of the acquiring
company having a Current Market Price equal to two times the exercise price of
the Right. Flip-In Events and Flip-Over Events are collectively referred to as
"Triggering Events."

         The number of outstanding Rights associated with a share of Common
Stock, or the number of Fractional Shares of Preferred Stock issuable upon
exercise of a Right and the Purchase Price, are subject to adjustment in the
event of a stock dividend on, or a subdivision, combination or reclassification
of, the Common Stock occurring prior to the Distribution Date. The Purchase
Price payable, and the number of Fractional Shares of Preferred Stock or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution in the event of certain
transactions affecting the Preferred Stock.

         With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price. No fractional shares of Preferred Stock that are not integral multiples
of a Fractional Share are required to be issued








                                      C-2
   58


upon exercise of Rights and, in lieu thereof, an adjustment in cash may be made
based on the market price of the Preferred Stock on the last trading date prior
to the date of exercise. Pursuant to the Rights Agreement, the Company reserves
the right to require prior to the occurrence of a Triggering Event that, upon
any exercise of Rights, a number of Rights be exercised so that only whole
shares of Preferred Stock will be issued.

         At any time until ten days following the first date of public
announcement of the occurrence of a Flip-In Event, the Company may redeem the
Rights in whole, but not in part, at a price of $.01 per Right, payable, at the
option of the Company, in cash, shares of Common Stock or such other
consideration as the Board of Directors may determine. Immediately upon the
effectiveness of the action of the Board of Directors ordering redemption of the
Rights, the Rights will terminate and the only right of the holders of Rights
will be to receive the $.01 redemption price.

         At any time after the occurrence of a Flip-In Event and prior to a
person's becoming the beneficial owner of 50% or more of the shares of Common
Stock then outstanding or the occurrence of a Flip-Over Event, the Company may
exchange the Rights (other than Rights owned by an Acquiring Person or an
affiliate or an associate of an Acquiring Person, which will have become void),
in whole or in part, at an exchange ratio of one share of Common Stock, and/or
other equity securities deemed to have the same value as one share of Common
Stock, per Right, subject to adjustment.

         Until a Right is exercised, the holder thereof, as such, will have no
rights as a stockholder of the Company, including, without limitation, the right
to vote or to receive dividends. While the distribution of the Rights should not
be taxable to stockholders or to the Company, stockholders may, depending upon
the circumstances, recognize taxable income in the event that the Rights become
exercisable for Common Stock (or other consideration) of the Company or for the
common stock of the acquiring company as set forth above or are exchanged as
provided in the preceding paragraph.

         Other than the redemption price, any of the provisions of the Rights
Agreement may be amended by the Board of Directors of the Company as long as the
Rights are redeemable. Thereafter, the provisions of the Rights Agreement other
than the redemption price may be amended by the Board of Directors in order to
cure any ambiguity, defect or inconsistency, to make changes that do not
materially adversely affect the interests of holders of Rights (excluding the
interests of any Acquiring Person), or to shorten or lengthen any time period
under the Rights Agreement; provided, however, that no amendment to lengthen the
time period governing redemption shall be made at such time as the Rights are
not redeemable.

         A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an exhibit to a Current Report on Form 8-K. A copy of the
Rights Agreement is available free of charge from the Company. This summary
description of the Rights does not purport to be complete and is qualified in
its entirety by reference to the Rights Agreement, which is incorporated herein
by reference.


                                      C-3