AMGEN INC
8-K, EX-99.1, 2000-12-18
BIOLOGICAL PRODUCTS, (NO DIAGNOSTIC SUBSTANCES)
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                                                                    Exhibit 99.1



                                  Amgen Inc.


                                      and


                    American Stock Transfer & Trust Company

                                as Rights Agent

                             Amended and Restated
                               Rights Agreement

                         Dated as of December 12, 2000
<PAGE>

                     AMENDED AND RESTATED RIGHTS AGREEMENT
                     -------------------------------------

                  Amended and Restated Rights Agreement, dated as of December
12, 2000 ("Rights Agreement"), between Amgen Inc., a Delaware corporation (the
"Company"), and American Stock Transfer & Trust Company, a New York corporation,
as Rights Agent (the "Rights Agent").

                                   RECITALS
                                   --------

                  WHEREAS, the Board of Directors of the Company previously
approved a Rights Agreement dated January 24, 1989, between the Company and the
Rights Agent, as amended (the "1989 Agreement");

                  WHEREAS, on February 18, 1997, the Board of Directors of the
Company redeemed the rights issued under the 1989 Agreement effective as of
March 21, 1997; and

                  WHEREAS, on February 18, 1997, the Board of Directors of the
Company adopted a new Rights Agreement (the "1997 Agreement") which was
effective as of March 21, 1997, and authorized and declared a dividend of one
right (a "Right") for each Common Share (as defined in Section 1.6) of the
Company outstanding at the close of business on March 21, 1997 (the "Record
Date") and has authorized the issuance of one Right (subject to adjustment as
provided herein) with respect to each Common Share that shall become outstanding
between the Record Date and the earliest of the Distribution Date, the
Redemption Date and the Final Expiration Date (as such terms are defined in
Sections 3.1 and 7.1), each Right initially representing the right to purchase
one one-thousandth of a share of Series A Junior Participating Preferred Stock
(the "Preferred Shares") of the Company having the rights, powers and
preferences set forth in the form of Certificate of Designations attached hereto
as Exhibit A, upon the terms and subject to the conditions hereinafter set
forth.

                  WHEREAS, since adoption of the 1997 Agreement, the Company
stock has effected two two-for-one splits of its outstanding common stock (the
"Stock Splits"), so that each Right currently gives the holder the right to
purchase one four-thousandth of a Preferred Share.

                  WHEREAS, on December 12, 2000, pursuant to Section 26, the
Board (with the approval of the Outside Directors) adopted certain amendments to
the Rights Agreement and approved this Amended and Restated Rights Agreement to
reflect such stock splits and amendments.

                  WHEREAS, the Board of Directors of the Company deems it
desirable and in the best interests of the Company and the stockholders to amend
and restate the Rights Agreement to, among other things: (i) provide that each
Right shall represent the right to purchase one four-thousandth of a Preferred
Share; (ii) increase the exercise price; (iii) extend the term of the Rights
Agreement; (iv) amend the definition of "Outside Director"; and (v) make such
other changes to give effect to the Stock Splits.

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

                                       1
<PAGE>

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

                  1.1 (a) Subject to Section 1.1(b), "Acquiring Person" shall
mean any Person (as such term is hereinafter defined) who or which, together
with all Affiliates and Associates (as such terms are hereinafter defined) of
such Person, shall be the Beneficial Owner (as such term is hereinafter defined)
of 10% or more of the Common Shares of the Company then outstanding but shall
not include the Company, any Subsidiary of the Company or any employee benefit
plan of the Company or of any Subsidiary of the Company or any entity holding
shares of capital stock of the Company for or pursuant to the terms of any such
plan, in its capacity as an agent or trustee for any such plan. Notwithstanding
the foregoing, no Person shall become an "Acquiring Person" as the result of an
acquisition of Common Shares by the Company which, by reducing the number of
shares outstanding, increases the proportionate number of shares beneficially
owned by such Person to 10% or more of the Common Shares of the Company then
outstanding; provided, however, that if a Person shall become the Beneficial
Owner of 10% or more of the Common Shares of the Company then outstanding solely
by reason of share purchases by the Company and shall, after such share
purchases by the Company, become the Beneficial Owner of any additional Common
Shares of the Company, then such Person shall be deemed to be an "Acquiring
Person." Notwithstanding the foregoing, if the Board of Directors of the Company
determines in good faith that a Person who would otherwise be an "Acquiring
Person," as defined pursuant to the foregoing provisions of this Section 1.1,
has become such inadvertently, and such Person divests as promptly as
practicable a sufficient number of Common Shares so that such Person would no
longer be an Acquiring Person, as defined pursuant to the foregoing provisions
of this Section 1.1, then such Person shall not be deemed to be an "Acquiring
Person" at any time for any purposes of this Agreement.

                  (b) Subject to Section 26(b), notwithstanding anything in this
Rights Agreement to the contrary, "Acquiring Person" shall not include any
Person that is an Approved Stockholder (so long as such Person remains an
Approved Stockholder), and no Approved Stockholder shall become an "Acquiring
Person" as the result of an acquisition of Common Shares by the Company which,
by reducing the number of shares outstanding, increases the proportionate number
of shares beneficially owned by such Person to more than 20% of the Common
Shares of the Company then outstanding; provided, however, that if a Person
shall become the Beneficial Owner of more than 20% of the Common Shares of the
Company then outstanding solely by reason of share purchases by the Company and
shall, after such share purchases by the Company, become the Beneficial Owner of
any additional Common Shares of the Company, then such Person shall be deemed to
be an "Acquiring Person."

                  1.2 "Affiliate" and "Associate" shall have the respective
meanings ascribed to such terms in Rule 12b-2 of the General Rules and
Regulations, as in effect on the date of this Rights Agreement, under the
Securities Exchange Act of 1934, as amended (the "Exchange Act").

                  1.3 (a) Subject to Section 26(b), "Approved Stockholder" shall
mean any Person (as such term is hereinafter defined) who or which enters into a
Standstill Agreement (as such term is hereinafter defined) approved by a
majority of the Outside Directors and with respect to whom or which the Outside
Directors determine that beneficial ownership of the Common

                                       2
<PAGE>

Shares by such Person is in the best interests of the Company and is not
reasonably likely to cause a material adverse impact on the business or
prospects of the Company; provided, however, that such Person shall cease to be
an Approved Stockholder if (i) such Person, together with all Affiliates and
Associates, shall be the Beneficial Owner (as such term is hereinafter defined)
of more than 20% of the Common Shares of the Company then outstanding or (ii)
such Person is not in compliance with the terms of the Standstill Agreement.
Upon the expiration or termination of the Standstill Agreement, such Person
shall cease to be an Approved Stockholder.

               (b) If, at the time of such expiration or termination, such
Person, together with all Affiliates or Associates, is the Beneficial Owner of
10% or more, but less than 20%, of the Common Shares of the Company then
outstanding, then, notwithstanding any other provision of this Agreement, such
Person shall not be an Acquiring Person; provided, however, that thereafter such
Person shall become an Acquiring Person if (i) such Person, or any Affiliate or
Associate of such Person, shall acquire Beneficial Ownership of one or more
additional Common Shares (other than pursuant to a stock split, stock dividend
or similar transaction approved by a majority of the Outside Directors), and
(ii) after such acquisition such Person is the Beneficial Owner of 10% or more
of the Common Shares then outstanding.

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

               (i)   which such Person or any of such Person's Affiliates or
         Associates beneficially owns, directly or indirectly (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);

               (ii)  which such Person or any of such Person's Affiliates or
         Associates, directly or indirectly, has (A) the right to acquire
         (whether such right is exercisable immediately, or only after the
         passage of time, compliance with regulatory requirements, fulfillment
         of a condition or otherwise) pursuant to any agreement, arrangement or
         understanding, whether or not in writing (other than customary
         agreements with and between underwriters and selling group members with
         respect to a bona fide public offering of securities), or upon the
         exercise of conversion rights, exchange rights, rights (other than the
         Rights), warrants or options, or otherwise; provided, however, that a
         Person shall not be deemed the Beneficial Owner of, or to beneficially
         own, (1) securities tendered pursuant to a tender or exchange offer
         made by or on behalf of such Person or any of such Person's Affiliates
         or Associates until such tendered securities are accepted for purchase
         or exchange or (2) securities which such Person or any of such Person's
         Affiliates or Associates may acquire, does or do acquire or may be
         deemed to have the right to acquire, pursuant to any merger or other
         acquisition agreement between the Company and such Person (or one or
         more of his Affiliates or Associates) if prior to such Person's
         becoming an Acquiring Person the Board of Directors of the Company
         has approved such agreement and determined that such Person shall not
         be or be deemed to be the beneficial owner of such securities within
         the meaning of this Section 1.4; or (B) the right to vote 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
         clause (B) if the agreement, arrangement

                                       3
<PAGE>

          or understanding to vote such security (1) arises solely from a
         revocable proxy or consent given to such Person in response to a public
         proxy or consent solicitation made pursuant to, and in accordance with,
         the applicable rules and regulations of the Exchange Act and (2) is not
         also then reportable on Schedule 13D under the Exchange Act (or any
         comparable or successor report); or

                      (iii) which are beneficially owned, directly or
         indirectly, by 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 (other than customary
         agreements with and between underwriters and selling group members with
         respect to a bona fide public offering of securities), whether or not
         in writing, for the purpose of acquiring, holding, voting (except
         pursuant to a revocable proxy as described in the proviso to Section
         1.3(ii)(B)) or disposing of any securities of the Company.

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

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

                  1.7 "Common Shares" when used with reference to the Company
shall mean the shares of common stock, par value $.0001 per share, of the
Company. "Common Shares" when used with reference to any Person other than the
Company shall mean the capital stock with the greatest voting power, or the
equity securities or other equity interest having power to control or direct the
management, of such other Person or, if such Person is a Subsidiary of another
Person, the Person or Persons which ultimately control such first-mentioned
Person, and which has issued and outstanding such capital stock, equity
securities or equity interest.

                  1.8 "Outside Director" shall mean a member of the Board of
Directors of the Company who is not an officer or employee of the Company, who
is not an Acquiring Person or an Approved Stockholder or an Affiliate or
Associate of an Acquiring Person or an Approved Stockholder, or a representative
or nominee of an Acquiring Person or an Approved Stockholder or of any such
Affiliate or Associate.

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

                  1.10 "Shares Acquisition Date" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, the filing of a report pursuant to Section 13(d) of the
Exchange Act or pursuant to a comparable successor statute) by the Company or an
Acquiring Person that an Acquiring Person has become such or that discloses
information which reveals the existence of an Acquiring Person.

                                       4
<PAGE>

                  1.11 Subject to Section 26(b), "Standstill Agreement" shall
mean an agreement entered into between the Company (upon the approval of a
majority of the Outside Directors) and a Person which restricts or prohibits
such Person from taking certain actions with respect to the Company and its
equity securities, including, but not limited to, acquiring or offering to
acquire Common Shares, engaging in a tender or exchange offer or proxy contest
with respect to the Common Shares, taking actions to directly or indirectly
acquire control of the Company or the Common Shares or other actions that the
Board determines would not be in the best interests of the Company and its
shareholders ("Restricted Actions"). Any Standstill Agreement entered into prior
to March 12, 2002 shall provide that the term during which such Person is
restricted or prohibited from taking such Restricted Actions shall be no more
than two (2) years. The Standstill Agreement shall provide that in the event
that any Person signing the Standstill Agreement shall sell, in compliance with
the Standstill Agreement, a sufficient number of Common Shares so that such
Person is then the Beneficial Owner of less than 10% of the Common Shares then
outstanding, then all restrictions under the Standstill Agreement shall
automatically be removed (except as the Company and such Person shall otherwise
agree in writing) and the Standstill Agreement shall be automatically
terminated.

                  1.12 "Subsidiary" of any Person shall mean any corporation or
other entity of which a majority of the voting power of the voting equity
securities or equity interests is owned, of record or beneficially, directly or
indirectly, by such Person.

                  1.13 A "Trigger Event" shall be deemed to have occurred upon
any Person becoming an Acquiring Person.

                  1.14 The following terms shall have the meanings defined for
such terms in the Sections set forth below:

              Term                                         Section
              ----                                         -------
         Adjustment Shares                                 11.1.2
         common stock equivalent                           11.1.3
         Company                                           Recitals
         current per share market price                    11.4
         Current Value                                     11.1.3
         Distribution Date                                 3.1
         equivalent preferred stock                        11.2
         Exchange Act                                      1.2
         Exchange Consideration                            27
         Final Expiration Date                             7.1
         NASDAQ                                            9
         Preferred Shares                                  Recitals
         Purchase Price                                    4
         Record Date                                       Recitals
         Redemption Date                                   7.1
         Redemption Price                                  23.1
         Right                                             Recitals
         Right Certificate                                 3.1
         Rights Agent                                      Recitals

                                       5
<PAGE>

         Security                                                     11.4
         Spread                                                       11.1.3
         Substitution Period                                          11.1.3
         Summary of Rights                                            3.2
         Trading Day                                                  11.4

                  Section 2. Appointment of Rights Agent. The Company hereby
                             ---------------------------
appoints the Rights Agent to act as agent for the Company and the holders of the
Rights (who, in accordance with Section 3, shall prior to the Distribution Date
also be the holders of the Common Shares) 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. In the event the Company appoints one or more co-Rights
Agents, the respective duties of the Rights Agent and any co-Rights Agent shall
be as the Company shall determine. Contemporaneously with such appointment, if
any, the Company shall notify the Rights Agent thereof.

                  Section 3. Issuance of Right Certificates.
                             ------------------------------

                  3.1 Rights Evidenced by Share Certificates. Until the earlier
                      --------------------------------------
of (i) the tenth day after the Shares Acquisition Date or (ii) the tenth
business day after the date of the commencement of, or first public announcement
of the intent of any Person (other than the Company, any Subsidiary of the
Company, any employee benefit plan of the Company or of any Subsidiary of the
Company or any entity holding shares of capital stock of the Company for or
pursuant to the terms of any such plan, in its capacity as an agent or trustee
for any such plan) to commence, a tender or exchange offer the consummation of
which would result in any Person becoming the Beneficial Owner of Common Shares
aggregating 10% or more of the then outstanding Common Shares of the Company
(the earlier of (i) and (ii) being herein referred to as the "Distribution
Date"), (x) the Rights (unless earlier expired, redeemed or terminated) will be
evidenced (subject to the provisions of Section 3.2) by the certificates for
Common Shares registered in the names of the holders thereof (which certificates
for Common Shares shall also be deemed to be Right Certificates) and not by
separate certificates, and (y) the Rights (and the right to receive certificates
therefor) will be transferable only in connection with the transfer of the
underlying Common Shares. The preceding sentence notwithstanding, prior to the
occurrence of a Distribution Date specified as a result of an event described in
clause (ii) (or such later Distribution Date as the Board of Directors of the
Company may select pursuant to this sentence), the Outside Directors may
postpone, one or more times, the Distribution Date which would occur as a result
of an event described in clause (ii) beyond the earlier of the date set forth in
such clause (ii). Nothing herein shall permit such a postponement of a
Distribution Date following the occurrence of an event described in clause (i)
above. As soon as practicable after the Distribution Date, the Rights Agent will
send, by first-class, postage-prepaid mail, to each record holder of Common
Shares as of the close of business on the Distribution Date, at the address of
such holder shown on the records of the Company, one or more certificates for
Rights, in substantially the form of Exhibit B hereto (a "Right Certificate"),
evidencing one Right (subject to adjustment as provided herein) for each Common
Share so held. As of the Distribution Date, the Rights will be evidenced solely
by such Right Certificates.

                  3.2 Summary of Rights. On the Record Date or as soon as
                      -----------------
practicable thereafter, the Company will send or cause to be sent a copy of a
Summary of Rights to Purchase

                                       6
<PAGE>

Preferred Shares, in substantially the form attached hereto as Exhibit C (the
"Summary of Rights"), by first-class, postage-prepaid mail, to each record
holder of Common Shares 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 Shares outstanding as of the close of business on the
Record Date, until the Distribution Date (or the earlier Redemption Date or
Final Expiration Date), the Rights will be evidenced by such certificates for
Common Shares registered in the names of the holders thereof together with a
copy of the Summary of Rights and the registered holders of the Common Shares
shall also be registered holders of the associated Rights. Until the
Distribution Date (or the earlier Redemption Date or Final Expiration Date), the
surrender for transfer of any certificate for Common Shares outstanding at the
close of business 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 Shares represented thereby.

                  3.3 New Certificates After Record Date. Certificates for
                      ----------------------------------
Common Shares which become outstanding (whether upon issuance out of authorized
but unissued Common Shares, issuance out of treasury or transfer or exchange of
outstanding Common Shares) after the Record Date but prior to the earliest of
the Distribution Date, the Redemption Date or the Final Expiration Date, shall
be deemed also to be certificates for Rights, and shall have impressed, printed,
stamped, written or otherwise affixed onto them the following legend:

         This certificate also evidences and entitles the holder
         hereof to certain Rights as set forth in a Rights Agreement
         between Amgen Inc. and American Stock Transfer & Trust
         Company, dated as of February 18, 1997, as the same may be
         amended from time to time (the "Rights Agreement"), the terms
         of which are hereby incorporated herein by reference and a
         copy of which is on file at the principal executive offices
         of Amgen Inc. Under certain circumstances, as set forth in
         the Rights Agreement, such Rights will be evidenced by
         separate certificates and will no longer be evidenced by this
         certificate. Amgen Inc. will mail to the holder of this
         certificate a copy of the Rights Agreement without charge
         after receipt of a written request therefor. As described in
         the Rights Agreement, Rights which are held by or have been
         held by Acquiring Persons or Associates or Affiliates thereof
         (as defined in the Rights Agreement) shall become null and
         void.

With respect to such certificates containing the foregoing legend, until the
Distribution Date (or the earlier Redemption Date or Final Expiration Date), the
Rights associated with the Common Shares represented by such certificates shall
be evidenced by such certificates (together with a copy of the Summary of
Rights), and the surrender for transfer of any such certificates shall also
constitute the transfer of the Rights associated with the Common Shares
represented thereby. In the event that the Company purchases or acquires any
Common Shares after the Record Date but prior to the Distribution Date, any
Rights associated with such Common Shares shall be deemed canceled and retired
so that the Company shall not be entitled to exercise any Rights associated with
the Common Shares which are no longer outstanding.

                  Section 4. Form of Right Certificates. The Right Certificates
                             --------------------------
(and the forms of election to purchase Preferred Shares, certification and
assignment to be printed on the reverse thereof) shall be substantially the same
as 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 and as are not inconsistent with the provisions of this Rights

                                       7
<PAGE>

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 trading system on which the Rights may from time to time be
listed or quoted, or to conform to usage. Subject to the terms and conditions
hereof, the Right Certificates, whenever issued, shall be dated as of the Record
Date, and shall show the date of countersignature by the Rights Agent, and on
their face shall entitle the holders thereof to purchase such number of one
four-thousandths of a Preferred Share as shall be set forth therein at the price
per one four-thousandth of a Preferred Share set forth therein (the "Purchase
Price"), but the number of such one four-thousandths of a Preferred Share and
the Purchase Price shall be subject to adjustment as provided herein.

                  Section 5. Countersignature and Registration. The Right
                             ---------------------------------
Certificates shall be executed on behalf of the Company by its Chairman of the
Board of Directors, the Chief Executive Officer, 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 any Assistant Secretary of the Company, either manually or by
facsimile signature. The Right Certificates shall be manually countersigned by
an authorized signatory of the Rights Agent, but it shall not be necessary for
the same signatory to countersign all of the Right Certificates hereunder. No
Right Certificate shall be valid for any purpose unless so countersigned. In
case any officer of the Company who shall have signed any of the Right
Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and delivery by the Company,
such Right 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 Right Certificates had not ceased to be such officer
of the Company; and any Right Certificate may be signed on behalf of the Company
by any person who, at the actual date of the execution of such Right
Certificate, shall be a proper officer of the Company to sign such Right
Certificate, although at the date of the execution of this Rights Agreement any
such person was not such an officer.

                  Following the Distribution Date, the Rights Agent will keep or
cause to be kept, at its principal office, books for registration and transfer
of the Right Certificates issued hereunder. Such books shall show the names and
addresses of the respective holders of the Right Certificates, the number of
Rights evidenced on its face by each of the Right Certificates, the certificate
number of each of the Right Certificates and the date of each of the Right
Certificates.

                  Section 6. Transfer, Split Up, Combination and Exchange of
                             -----------------------------------------------
Right Certificates; Mutilated, Destroyed, Lost or Stolen Right Certificates.
---------------------------------------------------------------------------
Subject to the provisions of Section 11.1.2 and Section 14, at any time after
the close of business on the Distribution Date, and at or prior to the close of
business on the earlier of the Redemption Date or the Final Expiration Date, any
Right Certificate or Right Certificates (other than Right Certificates
representing Rights that have become void pursuant to Section 11.1.2 or that
have been exchanged pursuant to Section 27) may be transferred, split up or
combined or exchanged for another Right Certificate or Right Certificates,
entitling the registered holder to purchase a like number of one
four-thousandths of a Preferred Share as the Right Certificate or Right
Certificates surrendered then entitled such holder to purchase. Any registered
holder desiring to transfer, split up or combine or exchange any Right
Certificate shall make such request in writing delivered to the Rights Agent,
and shall surrender, together with any required form of assignment and
certificate duly completed, the Right Certificate or Right Certificates to be
transferred, split up or combined or exchanged at the office of the Rights Agent
designated for such purpose. Neither the Rights Agent nor the Company shall be
obligated

                                       8
<PAGE>

to take any action whatsoever with respect to the transfer of any such
surrendered Right Certificate or Right Certificates until the registered holder
shall have completed and signed the certificate contained in the form of
assignment on the reverse side of such Right Certificate or Right Certificates
and shall have provided such additional evidence of the identity of the
Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates
thereof as the Company shall reasonably request. Thereupon the Rights Agent
shall countersign and deliver to the person entitled thereto a Right Certificate
or Right Certificates, as the case may be, as so requested. The Company may
require payment from the holders of Right Certificates of a sum sufficient to
cover any tax or governmental charge that may be imposed in connection with any
transfer, split up or combination or exchange of such Right Certificates.

                  Upon receipt by the Company and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Right Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them, and, at the Company's request,
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 Right Certificate if mutilated, the Company will make and deliver a new
Right Certificate of like tenor to the Rights Agent for countersignature and
delivery to the registered owner in lieu of the Right Certificate so lost,
stolen, destroyed or mutilated.

                  Section 7.  Exercise of Rights; Purchase Price; Expiration
                              ----------------------------------------------
Date of Rights.
--------------

                  7.1 Exercise of Rights. Subject to Section 11.1.3 and except
                      ------------------
as otherwise provided herein, the registered holder of any Right Certificate may
exercise the Rights evidenced thereby in whole or in part at any time after the
Distribution Date upon surrender of the Right Certificate, with the form of
election to purchase and certification on the reverse side thereof duly
executed, to the Rights Agent at the office of the Rights Agent designated for
such purpose, together with payment of the Purchase Price for each one
four-thousandth of a Preferred Share as to which the Rights are exercised, at or
prior to the earliest of (i) the close of business on December 12, 2010 (the
"Final Expiration Date"), (ii) the time at which the Rights are redeemed as
provided in Section 23 (the "Redemption Date"), (iii) the closing of any merger
or other acquisition transaction involving the Company pursuant to an agreement
of the type described in Sections 1.4(ii)(A)(2) and 13.2, at which time the
Rights are deemed terminated, or (iv) the time at which the Rights are exchanged
as provided in Section 27.

                  7.2 Purchase. The Purchase Price for each one four-thousandth
                      --------
of a Preferred Share pursuant to the exercise of a Right shall initially be
$350.00, shall be subject to adjustment from time to time as provided in
Sections 11, 13 and 26 and shall be payable in lawful money of the United States
of America in accordance with paragraph 7.3.

                  7.3 Payment Procedures. Upon receipt of a Right Certificate
                      ------------------
representing exercisable Rights, with the form of election to purchase and
certification duly executed, accompanied by payment of the Purchase Price for
the shares to be purchased and an amount equal to any applicable transfer tax
required to be paid by the holder of such Right Certificate in accordance with
Section 9, by certified or cashier's check or money order payable to the order
of the Company, the Rights Agent shall thereupon promptly (i)(A) requisition
from any transfer agent of the Preferred Shares (or make available, if the
Rights Agent is the transfer agent) certificates for the number of Preferred
Shares to be purchased and the Company hereby irrevocably authorizes its

                                       9
<PAGE>

transfer agent to comply with all such requests, or (B) if the Company shall
have elected to deposit the total number of Preferred Shares issuable upon
exercise of the Rights hereunder with a depositary agent, requisition from the
depositary agent depositary receipts representing such number of one
four-thousandths of a Preferred Share as are to be purchased (in which case
certificates for the Preferred Shares represented by such receipts shall be
deposited by the transfer agent with the depositary agent) and the Company
hereby directs the depositary agent to comply with all such requests, (ii) when
appropriate, requisition from the Company the amount of cash to be paid in lieu
of the issuance of fractional shares in accordance with Section 14, (iii)
promptly 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 Right
Certificate, registered in such name or names as may be designated by such
holder and (iv) when appropriate, after receipt, promptly deliver such cash to
or upon the order of the registered holder of such Right Certificate. In the
event that the Company is obligated to issue other securities of the Company,
pay cash and/or distribute other property pursuant to Section 11.1.3, 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 appropriate.

                  7.4 Partial Exercise. In case the registered holder of any
                      ----------------
Right Certificate shall exercise less than all the Rights evidenced thereby, a
new Right Certificate evidencing Rights equivalent to the Rights remaining
unexercised shall be issued by the Rights Agent and delivered to the registered
holder of such Right Certificate or to his duly authorized assigns, subject to
the provisions of Section 14.

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

                  Section 8. Cancellation and Destruction of Right Certificates.
                             --------------------------------------------------
All Right Certificates surrendered for the purpose of exercise, transfer, split
up, combination or exchange shall, if surrendered to the Company or to 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
Right Certificates shall be issued in lieu thereof except as expressly permitted
by any of the provisions of this Rights Agreement. The Company shall deliver to
the Rights Agent for cancellation and retirement, and the Rights Agent shall so
cancel and retire, any other Right Certificate purchased or acquired by the
Company otherwise than upon the exercise thereof. The Rights Agent shall deliver
all canceled Right Certificates to the Company, or shall, at the written request
of the Company, destroy such canceled Right Certificates, and in such case shall
deliver a certificate of destruction thereof to the Company.

                  Section 9. Reservation and Availability of Capital Stock. The
                             ---------------------------------------------
Company covenants and agrees that from and after the Distribution Date it will
cause to be reserved and kept available out of its authorized and unissued
Preferred Shares (and, following the occurrence of a Trigger

                                      10
<PAGE>

Event, out of its authorized and unissued Common Shares or other securities or
out of its shares held in its treasury) the number of Preferred Shares (and,
following the occurrence of a Trigger Event, Common Shares and/or other
securities) that will be sufficient to permit the exercise in full of all
outstanding Rights.

                  So long as the Preferred Shares (and, following the occurrence
of a Trigger Event, Common Shares and/or other securities) issuable upon the
exercise of Rights may be listed on any national securities exchange or traded
in the over-the-counter market and quoted on the National Association of
Securities Dealers, Inc. Automated Quotation System ("Nasdaq"), (including the
National Market or Small Cap Market) 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 so traded in such
over-the-counter market, upon official notice of issuance upon such exercise.

                  The Company covenants and agrees that it will take all such
action as may be necessary to ensure that all Preferred Shares (and, following
the occurrence of a Trigger Event, Common Shares 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 shares.

                  The Company further covenants and agrees that it will pay when
due and payable any and all Federal and state transfer taxes and charges which
may be payable in respect of the issuance or delivery of the Right Certificates
or of any Preferred Shares (or Common Shares and/or other securities, as the
case may be) upon the exercise of Rights. The Company shall not, however, be
required to pay any transfer tax which may be payable in respect of any transfer
or delivery of Right Certificates to a person other than, or the issuance or
delivery of certificates for the Preferred Shares (or Common Shares and/or other
securities, as the case may be) in a name other than that of, the registered
holder of the Right Certificate evidencing Rights surrendered for exercise or to
issue or deliver any certificates for Preferred Shares (or Common Shares 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 any such tax shall have
been paid (any such tax being payable by the holder of such Right Certificate at
the time of surrender) or until it has been established to the Company's
satisfaction that no such tax is due.

                  Section 10. Preferred Shares Record Date. Each person in whose
                              ----------------------------
name any certificate for Preferred Shares (or Common Shares 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 the Preferred
Shares (or Common Shares and/or other securities, as the case may be)
represented thereby on, and such certificate shall be dated, the date upon which
the Right Certificate evidencing such Rights was duly surrendered and payment of
the Purchase Price (and any applicable transfer taxes) was made; provided,
however, that if the date of such surrender and payment is a date upon which the
Preferred Shares (or Common Shares 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 Shares (or Common Shares and/or other securities, as the case may be)
transfer books of the Company are open.

                                      11
<PAGE>

                  Section 11. Adjustment of Purchase Price, Number of Shares or
                              -------------------------------------------------
Number of Rights. The Purchase Price, the number of shares covered by each Right
----------------
and the number of Rights outstanding are subject to adjustment from time to time
as provided in this Section 11.

                  11.1  Post Execution Events.
                        ---------------------

                  11.1.1 Corporate Dividends, Reclassifications, Etc. In the
                         -------------------------------------------
event the Company shall at any time after the date of this Rights Agreement (A)
declare a dividend on the Preferred Shares payable in Preferred Shares, (B)
subdivide the outstanding Preferred Shares, (C) combine the outstanding
Preferred Shares into a smaller number of shares or (D) issue any shares of its
capital stock in a reclassification of the Preferred Shares (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 11.1, 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 capital
stock issuable on such date, shall be proportionately adjusted so that the
holder of any Right exercised after such time shall be entitled to receive the
aggregate number and kind of shares of capital stock which, if such Right had
been exercised immediately prior to such date and at a time when the Preferred
Shares 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 which would require an
adjustment under both Section 11.1.1 and Section 11.1.2, the adjustment provided
for in this Section 11.1.1 shall be in addition to, and shall be made prior to,
the adjustment required pursuant to, Section 11.1.2.

                  11.1.2  Acquiring Person Events; Triggering Events. Subject to
                          ------------------------------------------
Sections 23.1 and 27 of this Agreement, in the event

                          (A) that any Acquiring Person or any Associate or
         Affiliate of any Acquiring Person, at any time after the date of this
         Rights Agreement, directly or indirectly, shall merge into the Company
         or otherwise combine with the Company and the Company shall be the
         continuing or surviving corporation of such merger or combination and
         the Common Shares of the Company shall remain outstanding and not
         changed into or exchanged for stock or other securities of any other
         Person or the Company or cash or any other property, or

                          (B) that a Trigger Event occurs,

then, from and after the first occurrence of such event, each holder of a Right,
except as provided below, shall thereafter have a right to receive, upon
exercise thereof at a price per Right equal to the then current Purchase Price
multiplied by the number of one four-thousandths of a Preferred Share for which
a Right is then exercisable (without giving effect to this Section 11.1.2), in
accordance with the terms of this Rights Agreement, such number of Common Shares
as shall equal the result obtained by (x) multiplying the then current Purchase
Price by the then number of one four-thousandths of a Preferred Share for which
a Right is then exercisable (without giving effect to this Section 11.1.2) and
(y) dividing that product by 50% of the current per share market price of the
Common Shares (determined pursuant to Section 11.4) on the first of the date of
the occurrence of, or the date of the first public announcement of, one of the
events listed above in this Section 11.1.2 (the "Adjustment Shares"); provided,
however, that if the transaction that would

                                      12
<PAGE>

otherwise give rise to the foregoing adjustment is also subject to the
provisions of Section 13, then only the provisions of Section 13 shall apply and
no adjustment shall be made pursuant to this Section 11.1.2; provided, further,
that the Purchase Price and the number of Adjustment Shares shall thereafter be
subject to further adjustment pursuant to Section 11.1.1 hereof. Notwithstanding
the foregoing, upon the occurrence of either of the events listed above in this
Section 11.1.2, any Rights that are or were acquired or beneficially owned by
(1) an Acquiring Person or any Associate or Affiliate thereof, (2) a transferee
of an Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee after the Acquiring Person becomes such, or (3) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a transfer (whether or not for
consideration) from the Acquiring Person to holders of equity interests in such
Acquiring Person or to any Person with whom the Acquiring Person has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer which the Board of Directors of the Company has
determined is part of a plan, arrangement or understanding which has as a
primary purpose or effect avoidance of this Section 11.1.2, shall become void,
and any holder (whether or not such holder is an Acquiring Person or an
Associate or Affiliate of an Acquiring Person) of such Rights shall thereafter
have no right to exercise such Rights under any provision of this Rights
Agreement or otherwise. The Company shall not enter into any transaction of the
type described in this Section 11.1.2 if at the time of such transaction there
are any rights, warrants, instruments or securities outstanding or any
arrangements which, as a result of the consummation of such transaction, would
eliminate or substantially diminish the benefits intended to be afforded by the
Rights. Any Right Certificate issued pursuant to Section 3 or Section 22 that
represents Rights beneficially owned by: (1) an Acquiring Person or any
Associate or Affiliate thereof, (2) a transferee of an Acquiring Person (or of
any such Associate or Affiliate) who becomes a transferee after the Acquiring
Person becomes such, or (3) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) who becomes a transferee prior to or concurrently with
the Acquiring Person becoming such and receives such Rights pursuant to either
(A) a transfer (whether or not for consideration) from the Acquiring Person to
holders of equity interests in such Acquiring Person or to any Person with whom
the Acquiring Person has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (B) a transfer which the Board of Directors
of the Company has determined is part of a plan, arrangement or understanding
which has as a primary purpose or effect avoidance of this Section 11.1.2, and
any Right Certificate issued pursuant to Section 6, 7.4 or 22 or this Section 11
upon transfer, exchange, replacement or adjustment of any other Right
Certificate referred to in this sentence, shall contain the following legend
(provided, however, that the Rights Agent shall not be responsible for affixing
such legend unless it has actual knowledge as to the foregoing circumstances or
the Company has notified the Rights Agent in writing thereof):

                  The Rights represented by this Right Certificate are held or
                  have been held by a Person who is or was an Acquiring Person
                  or an Affiliate or an Associate of an Acquiring Person or a
                  nominee thereof. This Right Certificate and the Rights
                  represented hereby have become null and void as specified in
                  Section 11.1.2 of the Rights Agreement.

                                      13
<PAGE>

                  The Company shall use all reasonable efforts to insure that
the provisions of this Section 11.1.2 are complied with, but shall have no
liability to any holder of Right Certificates or other Person as a result of its
failure to make any determinations with respect to any Acquiring Person or its
Affiliates, Associates or transferees hereunder.

                  11.1.3 Insufficient Shares. In the event that upon the
                         -------------------
occurrence of one or more of the events listed in Section 11.1.2 above there
shall not be sufficient Common Shares authorized but unissued, or held by the
Company as treasury shares, to permit the exercise in full of the Rights in
accordance with the foregoing Section 11.1.2, the Company shall take all such
action as may be necessary to authorize additional Common Shares for issuance
upon exercise of the Rights, provided, however, that if the Company determines
that it is unable to cause the authorization of a sufficient number of
additional Common Shares, then, in the event the Rights become exercisable, the
Company, with respect to each Right and to the extent necessary and permitted by
applicable law and any agreements or instruments in effect on the date hereof to
which it is a party, shall: (A) determine the excess of (1) the value of the
Adjustment Shares issuable upon the exercise of a Right (the "Current Value"),
over (2) the Purchase Price (such excess, the "Spread") and (B) with respect to
each Right, make adequate provision to substitute for the Adjustment Shares,
upon payment of the applicable Purchase Price, (1) cash, (2) a reduction in the
Purchase Price, (3) Common Shares or other equity securities of the Company
(including, without limitation, shares, or units of shares, of preferred stock
which the Board of Directors of the Company has deemed to have the same value as
Common Shares) (each such share of preferred stock constituting a "common stock
equivalent")), (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, that if the Company shall not have made adequate provision to deliver
value pursuant to clause (B) above within thirty (30) days following the first
occurrence of one of the events listed in Section 11.1.2 above, then the Company
shall be obligated to deliver, upon the surrender for exercise of a Right and
without requiring payment of the Purchase Price, Common Shares (to the extent
available) and then, if necessary, cash, which in the aggregate are equal to the
Spread. If the Board of Directors of the Company shall determine in good faith
that it is unlikely that sufficient additional Common Shares could be authorized
for issuance upon exercise in full of the Rights, the thirty (30) day period set
forth above may be extended and re-extended to the extent necessary, but not
more than ninety (90) days following the first occurrence of one of the events
listed in Section 11.1.2 above, in order that the Company may seek stockholder
approval for the authorization of such additional shares (such period as may be
extended, the "Substitution Period"). To the extent that the Company determines
that some action need be taken pursuant to the first and/or second sentences of
this Section 11.1.3, the Company (x) shall provide 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 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. For purposes of this Section 11.1.3, the
value of a Common Share shall be the current per share market price (as
determined pursuant to Section 11.4) on the date of the first occurrence of one
of the events listed in Section 11.1.2 above and the value of any

                                      14
<PAGE>

"common stock equivalent" shall be deemed to have the same value as the Common
Shares on such date.

                  11.2 Dilutive Rights Offering. In case the Company shall fix a
                       ------------------------
record date for the issuance of rights, options or warrants to all holders of
Preferred Shares entitling them (for a period expiring within 45 calendar days
after such record date) to subscribe for or purchase Preferred Shares (or
securities having the same rights, privileges and preferences as the Preferred
Shares ("equivalent preferred stock")) or securities convertible into Preferred
Shares or equivalent preferred stock at a price per share of Preferred Shares or
per share of equivalent preferred stock (or having a conversion or exercise
price per share, if a security convertible into or exercisable for Preferred
Shares or equivalent preferred stock) less than the current per share market
price of the Preferred Shares (as defined in Section 11.4) 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 Preferred Shares
outstanding on such record date plus the number of Preferred Shares which the
aggregate offering price of the total number of Preferred Shares and/or
equivalent preferred stock to be offered (and/or the aggregate initial
conversion price of the convertible securities so to be offered) would purchase
at such current per share market price and the denominator of which shall be the
number of Preferred Shares outstanding on such record date plus the number of
additional Preferred Shares 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
in a consideration part or all of which shall 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 statement
filed with the Rights Agent and shall be binding on the Rights Agent and the
holders of the Rights. Preferred Shares owned by or held for the account of the
Company or any Subsidiary of the Company shall not be deemed outstanding for the
purpose of any such computation. Such adjustments 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 which would then be in effect if such record date had not been
fixed.

                  11.3 Distributions. In case the Company shall fix a record
                       -------------
date for the making of a distribution to all holders of the Preferred Shares
(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, securities or assets (other than a regular
periodic cash dividend at a rate not in excess of 125% of the rate of the last
regular periodic cash dividend theretofore paid or, in case regular periodic
cash dividends have not theretofore been paid, at a rate not in excess of 50% of
the average net income per share of the Company for the four quarters ended
immediately prior to the payment of such dividend, or a dividend payable in
Preferred Shares (which dividend, for purposes of this Agreement, shall be
subject to the provisions of Section 11.1.1(A) hereof)) or convertible
securities, or subscription rights or warrants (excluding those referred to in
Section 11.2), 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 per
share market price of the Preferred Shares (as defined in Section 11.4) 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
statement filed with the Rights Agent) of the portion of the cash, assets,
securities or evidences of indebtedness so to be distributed or of such
subscription rights or warrants applicable to one

                                      15
<PAGE>

Preferred Share and the denominator of which shall be such current per share
market price of the Preferred Shares. 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 again be adjusted to be
the Purchase Price which would then be in effect if such record date had not
been fixed.

                  11.4  Current Per Share Market Value.
                        ------------------------------

                  11.4.1 General. For the purpose of any computation hereunder,
                         -------
the "current per share market price" of any security (a "Security" for the
purpose of this Section 11.4.1) on any date shall be deemed to be the average of
the daily closing prices per share of such Security for the thirty (30)
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 Security is determined during any period following the
announcement by the issuer of such Security of (i) a dividend or distribution on
such Security payable in shares of such Security or securities convertible into
such shares or (ii) any subdivision, combination or reclassification of such
Security, and prior to the expiration of thirty (30) Trading Days after the
ex-dividend date for such dividend or distribution, or the record date for such
subdivision, combination or reclassification, then, and in each such case, the
"current per share market price" shall be appropriately adjusted to reflect the
current market price per share equivalent of such Security. The closing price
for each day shall be the last sale 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 consolidated
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange or, if the Security is not listed or
admitted to trading on the New York Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Security is listed or
admitted to trading or, if the Security is not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market,
as reported by Nasdaq or such other system then in use, or, if on any such date
the Security is not quoted by any such organization, the average of the closing
bid and asked prices as furnished by a professional market maker making a market
in the Security selected by the Board of Directors of the Company. If on any
such date no such market maker is making a market in the Security, the fair
value of the Security on such date as determined in good faith by the Board of
Directors of the Company shall be used. The term "Trading Day" shall mean a day
on which the principal national securities exchange on which the Security is
listed or admitted to trading is open for the transaction of business or, if the
Security is not listed or admitted to trading on any national securities
exchange, a Business Day. If the Security is not publicly held or not so listed
or traded, "current per share market price" shall mean the fair value per share
as determined in good faith by the Board of Directors of the Company or, if at
the time of such determination there is an Acquiring Person, by a majority of
the Outside Directors then in office, or if there are no Outside Directors, by a
nationally recognized investment banking firm selected by the Board of
Directors, which shall have the duty to make such determination in a reasonable
and objective manner, whose determination shall be described in a statement
filed with the Rights Agent and shall be conclusive for all purposes.

                                      16
<PAGE>

                  11.4.2 Preferred Shares. Notwithstanding Section 11.4.1, for
                         ----------------
the purpose of any computation hereunder, the "current per share market price"
of the Preferred Shares shall be determined in the same manner as set forth
above in Section 11.4.1 (other than the last sentence thereof). If the current
per share market price of the Preferred Shares cannot be determined in the
manner described in Section 11.4.1, the "current per share market price" of the
Preferred Shares shall be conclusively deemed to be an amount equal to 4,000 (as
such number may be appropriately adjusted for such events as stock splits, stock
dividends and recapitalizations with respect to the Common Shares occurring
after the date of this Agreement) multiplied by the current per share market
price of the Common Shares. If neither the Common Shares nor the Preferred
Shares is publicly held or so listed or traded, "current per share market price"
of the Preferred Shares shall mean the fair value per share as determined in
good faith by the Board of Directors of the Company, or, if at the time of such
determination there is an Acquiring Person, by a majority of the Outside
Directors then in office, or if there are no Outside Directors, by a nationally
recognized investment banking firm selected by the Board of Directors of the
Company, which shall have the duty to make such determination in a reasonable
and objective manner, which determination shall be described in a statement
filed with the Rights Agent and shall be conclusive for all purposes. For
purposes of this Agreement, the "current per share market price" of one
four-thousandth of a Preferred Share shall be equal to the "current per share
market price" of one Preferred Share divided by 4,000.

                  11.5 Insignificant Changes. No adjustment in the Purchase
                       ---------------------
Price shall be required unless such adjustment would require an increase or
decrease of at least 1% in such price. Any adjustments which by reason of this
Section 11.5 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 one-millionth of a Preferred
Share or the nearest ten-thousandth of a Common Share, as the case may be.

                  11.6 Shares Other Than Preferred Shares. If as a result of an
                       ----------------------------------
adjustment made pursuant to Section 11.1, the holder of any Right thereafter
exercised shall become entitled to receive any shares of capital stock of the
Company other than Preferred Shares, thereafter the number of such other shares
so receivable upon exercise of any Right 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 Shares contained in Sections 11.1
through 11.3, inclusive, and the provisions of Sections 7, 9, 10 and 13 with
respect to the Preferred Shares shall apply on like terms to any such other
shares.

                  11.7 Rights Issued Prior to Adjustment. 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 one four-thousandths of a Preferred Share purchasable from time to
time hereunder upon exercise of the Rights, all subject to further adjustment as
provided herein.

                  11.8 Effect of Adjustments. Unless the Company shall have
                       ---------------------
exercised its election as provided in Section 11.9, upon each adjustment of the
Purchase Price as a result of the calculations made in Sections 11.2 and 11.3,
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 one four-thousandths of a Preferred Share (calculated to the nearest
one-millionth of a Preferred Share) obtained by (i) multiplying (x) the number
of one four-thousandths

                                      17
<PAGE>

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

                  11.9 Adjustment in Number of Rights. The Company may elect on
                       ------------------------------
or after the date of any adjustment of the Purchase Price to adjust the number
of Rights, in substitution for any adjustment in the number of one
four-thousandths of a Preferred Share issuable upon the exercise of a Right.
Each of the Rights outstanding after such adjustment of the number of Rights
shall be exercisable for the number of one four-thousandths of a Preferred Share
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 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 Right Certificates have been issued, shall be at least
ten (10) days later than the date of the public announcement. If Right
Certificates have been issued, upon each adjustment of the number of Rights
pursuant to this Section 11.9, the Company shall, as promptly as practicable,
cause to be distributed to holders of record of Right Certificates on such
record date Right Certificates evidencing, subject to Section 14, 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 Right Certificates held by
such holders prior to the date of adjustment, and upon surrender thereof, if
required by the Company, new Right Certificates evidencing all the Rights to
which such holders shall be entitled after such adjustment. Right 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
Right Certificates on the record date specified in the public announcement.

                  11.10 Right Certificates Unchanged. Irrespective of any
                        ----------------------------
adjustment or change in the Purchase Price or the number of one four-thousandths
of a Preferred Share issuable upon the exercise of the Rights, the Right
Certificates theretofore and thereafter issued may continue to express the
Purchase Price per share and the number of one four-thousandths of a Preferred
Share which were expressed in the initial Right Certificates issued hereunder.

                  11.11 Par Value Limitations. Before taking any action that
                        ---------------------
would cause an adjustment reducing the Purchase Price below one four-thousandth
of the then par value, if any, of the Preferred Shares issuable upon exercise of
the Rights, the Company shall take any corporate action which may, in the
opinion of its counsel, be necessary in order that the Company may validly and
legally issue fully paid and nonassessable Preferred Shares at such adjusted
Purchase Price.

                  11.12 Deferred Issuance. 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 until the
occurrence of such event the issuing to the holder of any Right exercised after
such record date of the Preferred Shares and other capital stock or securities
of the Company, if any, issuable upon such exercise over and above the Preferred
Shares and other capital stock or securities

                                      18
<PAGE>

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 upon the
occurrence of the event requiring such adjustment.

                  11.13 Reduction in Purchase Price. 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 it in its sole discretion
shall determine to be advisable in order that any consolidation or subdivision
of the Preferred Shares, issuance wholly for cash of any of the Preferred Shares
at less than the current market price, issuance wholly for cash of Preferred
Shares or securities which by their terms are convertible into or exchangeable
for Preferred Shares, dividends on Preferred Shares payable in Preferred Shares
or issuance of rights, options or warrants referred to hereinabove in this
Section 11, hereafter made by the Company to holders of its Preferred Shares
shall not be taxable to such stockholders.

                  11.14 The Company covenants and agrees that after the
Distribution Date it will not, except as permitted by Section 23 or Section 26,
take (or permit any Subsidiary to take) any action if at the time such action is
taken it is reasonably foreseeable that such action will substantially diminish
or otherwise eliminate the benefits intended to be afforded by the Rights.

                  11.15 Notwithstanding anything contained in this Agreement to
the contrary, in the event that the Company shall at any time after the date
hereof and prior to the Distribution Date (i) declare or pay any dividend on the
outstanding Common Shares payable in Common Shares, (ii) effect a subdivision or
consolidation of the outstanding Common Shares (by reclassification or otherwise
than by the payment of dividends payable in Common Shares), or (iii) combine the
outstanding Common Shares into a greater or lesser number of Common Shares, then
in any such case, the number of Rights associated with each Common Share then
outstanding, or issued or delivered thereafter but prior to the Distribution
Date, shall be proportionately adjusted so that the number of Rights thereafter
associated with each Common Share following any such event shall equal the
result obtained by multiplying the number of Rights associated with each Common
Share immediately prior to such event by a fraction, the numerator of which
shall be the total number of Common Shares outstanding immediately prior to the
occurrence of the event and the denominator of which shall be the total number
of Common Shares outstanding immediately following the occurrence of such event.
The adjustments provided for in this Section 11.15 shall be made successively
whenever such a dividend is declared or paid or such a subdivision, combination
or consolidation is effected.

                                      19
<PAGE>

                  Section 12. Certificate of Adjusted Purchase Price or Number
                              ------------------------------------------------
of Shares. Whenever an adjustment is made as provided in Sections 11 and 13, the
---------
Company shall (a) promptly prepare a certificate setting forth such adjustment,
and a brief statement of the facts accounting for such adjustment, (b) promptly
file with the Rights Agent and with each transfer agent for the Common Shares or
the Preferred Shares a copy of such certificate and (c) mail a brief summary
thereof to each holder of a Right Certificate in accordance with Section 25. The
Rights Agent shall be fully protected in relying on any such certificate and on
any adjustment therein contained and shall not be deemed to have knowledge of
any such adjustment unless and until it shall have received such certificate.

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

                  13.1 General. In the event that, from and after the first
                       -------
occurrence of a Trigger Event, directly or indirectly, (A) the Company shall
consolidate with, or merge with and into, any other Person and the Company shall
not be the continuing or surviving corporation, (B) any Person shall consolidate
with the Company, or merge with and into the Company and the Company shall be
the continuing or surviving corporation of such merger and, in connection with
such merger, all or part of the Common Shares 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 (C) the Company shall sell, exchange, mortgage or otherwise
transfer (or one or more of its Subsidiaries shall sell, exchange, mortgage or
otherwise transfer), in one or more transactions, assets or earning power
aggregating 50% or more of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any other Person or Persons, then, and in
each such case, proper provision shall be made so that (i) each holder of a
Right (except as provided in Section 11.1.2 and as otherwise provided herein)
shall thereafter have the right to receive, upon the exercise thereof at a price
per Right equal to the then current Purchase Price multiplied by the number of
one four-thousandths of a Preferred Share for which a Right was exercisable
immediately prior to the first occurrence of a Trigger Event (as subsequently
adjusted pursuant to Sections 11.1.1, 11.2, 11.3, 11.8, 11.9 and 11.12), in
accordance with the terms of this Rights Agreement and in lieu of Preferred
Shares, such number of Common Shares of such other Person (including the Company
as successor thereto or as the surviving corporation) as shall be equal to the
result obtained by (x) multiplying the then current Purchase Price by the number
of one four-thousandths of a Preferred Share for which a Right was exercisable
immediately prior to the first occurrence of a Trigger Event (as subsequently
adjusted pursuant to Sections 11.1.1, 11.2, 11.3, 11.8, 11.9 and 11.12) and (y)
dividing that product by 50% of the then current per share market price of the
Common Shares of such other Person (determined pursuant to Section 11.4) on the
date of consummation of such consolidation, merger, sale or transfer; provided,
that the price per Right so payable and the number of Common Shares of such
Person so purchasable shall thereafter be adjusted in accordance with Sections
11.1.1, 11.2, 11.3, 11.8, 11.9 and 11.12 by reason of such subsequent events
covered thereby occurring in respect of such Person; (ii) the issuer of such
Common Shares shall thereafter be liable for, and shall assume, by virtue of
such consolidation, merger, sale or transfer, all the obligations and duties of
the Company pursuant to this Rights Agreement; (iii) the term "Company" shall
thereafter be deemed to refer to such issuer; and (iv) such issuer shall take
such steps (including, but not limited to, the reservation of a sufficient
number of its Common Shares in accordance with Section 9) in connection with
such consummation as may be necessary to assure that the provisions hereof shall
thereafter be applicable, as nearly as reasonably may be, in relation to its
Common Shares thereafter deliverable upon the exercise of the Rights. The
Company shall not enter into any transaction of the kind referred to in this
Section 13 if at the time of such transaction there are any

                                      20
<PAGE>

rights, warrants, instruments or securities outstanding or any agreements or
arrangements which, as a result of the consummation of such transaction, would
eliminate or substantially diminish the benefits intended to be afforded by the
Rights. The Company shall not consummate any such consolidation, merger, sale or
transfer unless prior thereto the Company and such issuer shall have executed
and delivered to the Rights Agent a supplemental agreement so providing. The
provisions of this Section 13 shall similarly apply to successive mergers or
consolidations or sales or other transfers.

                  13.2 Approved Acquisitions. Notwithstanding anything contained
                       ---------------------
herein to the contrary, in the event of any merger or other acquisition
transaction involving the Company pursuant to a merger or other acquisition
agreement between the Company and any Person (or one or more of such Person's
Affiliates or Associates) which agreement has been approved by the Board of
Directors of the Company prior to any Person becoming an Acquiring Person, this
Rights Agreement and the rights of holders of Rights hereunder shall be
terminated in accordance with Section 7.1.

                  Section 14.  Fractional Rights and Fractional Shares.
                               ---------------------------------------

                  14.1 Cash in Lieu of Fractional Rights. The Company shall not
                       ---------------------------------
be required to issue fractions of Rights or to distribute Right Certificates
which evidence fractional Rights. In lieu of such fractional Rights, there shall
be paid to the registered holders of the Right Certificates with regard to which
such fractional Rights would otherwise be issuable an amount in cash equal to
the same fraction of the current market value of a whole Right. For the purposes
of this Section 14.1, the current market value of a whole Right shall be the
closing price of the Rights for the Trading Day immediately prior to the date on
which such fractional Rights would have been otherwise issuable. The closing
price for any day shall be the last sale 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 consolidated
transaction reporting system with respect to securities listed or admitted to
trading on the New York Stock Exchange or, if the Rights are not listed or
admitted to trading on the New York Stock Exchange, as reported in the principal
consolidated transaction reporting system with respect to securities listed on
the principal national securities exchange on which the Rights are listed or
admitted to trading or, if the Rights are not listed or admitted to trading on
any national securities exchange, the last quoted price or, if not so quoted,
the average of the high bid and low asked prices in the over-the-counter market,
as reported by Nasdaq or such other system then in use or, if on any such date
the Rights are not quoted by any such organization, the average of the closing
bid and asked prices as furnished by a professional market maker making a market
in the Rights selected by the Board of Directors of the Company. If on any such
date no such market maker is making a market in the Rights, the fair value of
the Rights on such date as determined in good faith by the Board of Directors of
the Company shall be used.

                  14.2 Cash in Lieu of Fractional Shares. The Company shall not
                       ---------------------------------
be required to issue fractions of Preferred Shares (other than fractions which
are integral multiples of one four-thousandth of a Preferred Share) upon
exercise of the Rights or to distribute certificates which evidence fractional
Preferred Shares (other than fractions which are integral multiples of one
four-thousandth of a Preferred Share). Fractions of Preferred Shares in integral
multiples of one four-thousandth of a Preferred Share may, at the election of
the Company, be evidenced by depositary receipts, pursuant to an appropriate
agreement between the Company and a depositary selected by

                                      21
<PAGE>

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 Preferred Shares represented
by such depositary receipts. In lieu of fractional Preferred Shares that are not
integral multiples of one four-thousandth of a Preferred Share, the Company
shall pay to the registered holders of Right Certificates at the time such
Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current per share market price of one Preferred Share. For
purposes of this Section 14.2, the current per share market price of a Preferred
Share shall be the closing price of a Preferred Share (as determined pursuant to
the second sentence of Section 11.4.2) for the Trading Day immediately prior to
the date of such exercise.

                  14.3 Waiver of Right to Receive Fractional Rights or Shares.
                       ------------------------------------------------------
The holder of a Right by the acceptance of the Rights 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.

                  Section 15. Rights of Action. All rights of action in respect
                              ----------------
of this Rights Agreement, except the rights of action given to the Rights Agent
under Section 18, are vested in the respective registered holders of the Right
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares); and any registered holder of any Right Certificate (or, prior to
the Distribution Date, of the Common Shares), without the consent of the Rights
Agent or of the holder of any other Right Certificate (or, prior to the
Distribution Date, of the Common Shares), may, in his own behalf and for his own
benefit, enforce this Rights Agreement, and may institute and maintain any suit,
action or proceeding against the Company to enforce this Rights Agreement, or
otherwise enforce or act in respect of his right to exercise the Rights
evidenced by such Right Certificate in the manner provided in such Right
Certificate and in this Rights 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 Rights Agreement and shall be entitled to specific performance of
the obligations under, and injunctive relief against actual or threatened
violations of, the obligations of any Person (including, without limitation, the
Company) subject to this Rights Agreement.

                  Section 16. Agreement of Right 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
         be transferable only in connection with the transfer of the Common
         Shares;

                           (b) as of and after the Distribution Date, the Right
         Certificates are transferable only on the registry books of the Rights
         Agent if surrendered at the office of the Rights Agent designated for
         such purpose, duly endorsed or accompanied by a proper instrument of
         transfer with all required certifications completed; and

                           (c) the Company and the Rights Agent may deem and
         treat the Person in whose name the Right Certificate (or, prior to the
         Distribution Date, the associated Common Shares certificate) is
         registered as the absolute owner thereof and of the Rights evidenced
         thereby (notwithstanding any notations of ownership or writing on the
         Right Certificates or the associated Common Shares certificate made by
         anyone other than the

                                      22
<PAGE>

         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.

                  Section 17. Right Certificate Holder Not Deemed a Stockholder.
                              -------------------------------------------------
No holder, as such, of any Right Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the Preferred Shares or any
other securities of the Company which may at any time be issuable on the
exercise of the Rights represented thereby, nor shall anything contained herein
or in any Right Certificate be construed to confer upon the holder of any Right
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 24), or to receive dividends or
subscription rights, or otherwise, until the Right or Rights evidenced by such
Right Certificate shall have been exercised in accordance with the provisions
hereof.

                  Section 18. Concerning the Rights Agent. The Company agrees to
                              ---------------------------
pay to the Rights Agent reasonable compensation for all services rendered by it
hereunder in accordance with a fee schedule to be mutually agreed upon and, from
time to time, on demand of the Rights Agent, its reasonable expenses and counsel
fees and other disbursements incurred in the administration and execution of
this Rights 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, or expense, incurred without negligence,
bad faith or willful misconduct on the part of the Rights Agent, for anything
done or omitted by the Rights Agent in connection with the acceptance and
administration of this Rights Agreement, including the costs and expenses of
defending against any claim of liability in the premises.

                  The Rights Agent shall be protected and shall incur no
liability for or in respect of any action taken, suffered or omitted by it in
connection with its administration of this Rights Agreement in reliance upon any
Right Certificate or certificate for the Preferred Shares or the Common Shares
or for other securities of the Company, instrument of assignment or transfer,
power of attorney, endorsement, affidavit, letter, notice, instruction,
direction, consent, certificate, statement, or other paper or document believed
by it to be genuine and to be signed, executed and, where necessary, verified or
acknowledged, by the proper person or persons.

                  Section 19. Merger or Consolidation or Change of Name of
                              --------------------------------------------
Rights Agent. Any corporation into which the Rights Agent or any successor
------------
Rights Agent may be merged or with which it may be consolidated, or any
corporation resulting from any merger or consolidation to which the Rights Agent
or any successor Rights Agent shall be a party, or any corporation succeeding to
the corporate trust or stock transfer business of the Rights Agent or any
successor Rights Agent, shall be the successor to the Rights Agent under this
Rights Agreement without the execution or filing of any paper or any further act
on the part of any of the parties hereto, provided that such corporation would
be eligible for appointment as a successor Rights Agent under the provisions of
Section 21. In case at the time such successor Rights Agent shall succeed to the
agency created by this Rights Agreement, any of the Right Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the countersignature of the predecessor Rights Agent and deliver such
Right Certificates so countersigned; and in case at that time any of the Right
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Right Certificates either in the name of the predecessor Rights
Agent

                                      23
<PAGE>

or in the name of the successor Rights Agent; and in all such cases such
Right Certificates shall have the full force provided in the Right Certificates
and in this Rights Agreement.

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

                  Section 20. Duties of Rights Agent. The Rights Agent
                              ----------------------
undertakes the duties and obligations imposed by this Rights Agreement upon the
following terms and conditions, by all of which the Company and the holders of
Right Certificates, by their acceptance thereof, shall be bound:

                  20.1 Legal Counsel. The Rights Agent may consult with legal
                       -------------
counsel selected by it (who may be legal counsel for the Company), and the
opinion of such counsel shall be full and complete authorization and protection
to the Rights Agent as to any action taken or omitted by it in good faith and in
accordance with such opinion.

                  20.2 Certificates as to Facts or Matters. Whenever in the
                       -----------------------------------
performance of its duties under this Rights Agreement the Rights Agent shall
deem it necessary or desirable that any fact or matter be proved or established
by the Company prior to taking or suffering 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 any one of the Chairman of the Board of Directors, the
Chief Executive Officer, the President, the Chief Financial Officer, any Vice
President, the Treasurer, the Secretary or any Assistant Treasurer or Assistant
Secretary of the Company and delivered to the Rights Agent; and such certificate
shall be full authorization to the Rights Agent for any action taken or suffered
in good faith by it under the provisions of this Rights Agreement in reliance
upon such certificate.

                  20.3 Standard of Care. The Rights Agent shall be liable
                       ----------------
hereunder only for its own negligence, bad faith or willful misconduct.

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

                  20.5 No Responsibility as to Certain Matters. The Rights Agent
                       ---------------------------------------
shall not be under any responsibility in respect of the validity of this Rights
Agreement or the execution and delivery hereof (except the due execution hereof
by the Rights Agent) or in respect of the validity or execution of any Right
Certificate (except its countersignature thereof); nor shall it be responsible
for any breach by the Company of any covenant or condition contained in this
Rights Agreement or in any Right Certificate; nor shall it be responsible for
any change in the exercisability of the Rights (including the Rights becoming
void pursuant to Section 11.1.2) or any adjustment required

                                      24
<PAGE>

under the provisions of Sections 3, 11, 13, 23 or 27 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 Right Certificates after actual notice of
any such adjustment); nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any
Preferred Shares to be issued pursuant to this Rights Agreement or any Right
Certificate or as to whether any Preferred Shares will, when so issued, be
validly authorized and issued, fully paid and nonassessable.

                  20.6 Further Assurance by Company. 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
Rights Agreement.

                  20.7 Authorized Company Officers. The Rights Agent is hereby
                       ---------------------------
authorized and directed to accept instructions with respect to the performance
of its duties hereunder from any one of the Chairman of the Board of Directors,
the Chief Executive Officer, the President, the Chief Financial Officer, any
Vice President, the Treasurer, the Secretary or any Assistant Treasurer or
Assistant Secretary of the Company, and to apply to such officers for advice or
instructions in connection with its duties under this Rights Agreement, and it
shall not be liable for any action taken or suffered to be taken by it in good
faith in accordance with instructions of any such officer or for any delay in
acting while waiting for these instructions. Any application by the Rights Agent
for written instructions from the Company may, at the option of the Rights
Agent, set forth in writing any action proposed to be taken or omitted by the
Rights Agent with respect to its duties or obligations under this Rights
Agreement and the date on and/or after which such action shall be taken or
omitted. The Rights Agent shall not be liable to the Company for any action
taken or omitted in accordance with a proposal included in any such application
on or after the date specified therein (which date shall not be less than three
business days after the date any such officer actually receives such
application, unless any such officer shall have consented in writing to an
earlier date) unless, prior to taking of any such action (or the effective date
in the case of omission), the Rights Agent shall have received written
instructions in response to such application specifying the action to be taken
or omitted.

                  20.8 Freedom to Trade in Company Securities. The Rights Agent
                       --------------------------------------
and any stockholder, 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 Rights Agreement.
Nothing herein shall preclude the Rights Agent from acting in any other capacity
for the Company or for any other legal entity.

                  20.9 Reliance on Attorneys and Agents. 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, provided that reasonable care was exercised in the selection and
continued employment thereof.

                                      25
<PAGE>

                  20.10 Rights Holders List. At any time and from time to time
                        -------------------
after the Distribution Date, upon the request of the Company, the Rights Agent
shall promptly deliver to the Company a list, as of the most recent practicable
date (or as of such earlier date as may be specified by the Company), of the
holders of record of Rights.

                  Section 21. Change of Rights Agent. The Rights Agent or any
                              ----------------------
successor Rights Agent may resign and be discharged from its duties under this
Rights Agreement upon thirty (30) days' notice in writing mailed to the Company
and to each transfer agent of the Common Shares and/or Preferred Shares, as
applicable, by registered or certified mail. The Company shall promptly notify
the holders of the Right Certificates by first-class mail of any such
resignation. The Company may remove the Rights Agent or any successor Rights
Agent upon thirty (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 Shares and/or Preferred Shares, as applicable, by registered or certified
mail, and to the holders of the Right Certificates by first-class mail. If the
Rights Agent shall resign or be removed or shall otherwise become incapable of
acting, the resigning, removed, or incapacitated Rights Agent shall remit to the
Company, or to any successor Rights Agent designated by the Company, all books,
records, funds, certificates or other documents or instruments of any kind then
in its possession which were acquired by such resigning, removed or
incapacitated Rights Agent in connection with its services as Rights Agent
hereunder, and shall thereafter be discharged from all duties and obligations
hereunder. Following notice of such removal, resignation or incapacity, the
Company shall appoint a successor to such Rights Agent. If the Company shall
fail to make such appointment within a period of thirty (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 holder of a Right Certificate (who shall, with such notice, submit his Right
Certificate for inspection by the Company), then the registered holder of any
Right 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 corporation organized and doing
business under the laws of the United States or of the State of New York or the
State of California (or any other state of the United States so long as such
corporation is authorized to do business as a banking institution in the State
of New York or California) in good standing, having an office in the State of
New York or the State of California, which is authorized under such laws to
exercise stock transfer or corporate trust powers 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 $10
million. 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 Shares
and/or Preferred Shares, as applicable, and mail a notice thereof in writing to
the registered holders of the Right 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 Right Certificates.
                              ----------------------------------
Notwithstanding any of the provisions of this Rights Agreement or of the Rights
to the contrary, the Company may, at its

                                      26
<PAGE>

option, issue new Right 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 Right Certificates made in accordance with the
provisions of this Rights Agreement. In addition, in connection with the
issuance or sale of Common Shares following the Distribution Date and prior to
the redemption, exchange, termination or expiration of the Rights, the Company
(a) shall, with respect to Common Shares so issued or sold pursuant to the
exercise of stock options or under any employee plan or arrangement, granted or
awarded as of the Distribution Date, or upon exercise, conversion or exchange of
securities hereinafter issued by the Company, and (b) may, in any other case, if
deemed necessary or appropriate by the Board of Directors of the Company, issue
Right Certificates representing the appropriate number of Rights in connection
with such issuance or sale; provided, however, that (i) no such Right
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
Right Certificate would be issued, (ii) no such Right Certificate shall be
issued if, and to the extent that, appropriate adjustment shall otherwise have
been made in lieu of the issuance thereof and (iii) at the time of a
determination by the Board of Directors to cause the Company to issue a Right
Certificate under clause (b) above, there must be Outside Directors then in
office and any such determination shall require the approval of at least a
majority of such Outside Directors.

                  Section 23.  Redemption.
                               ----------

                  23.1 Right to Redeem. The Board of Directors of the Company
                       ---------------
may, at its option, at any time prior to a Trigger Event, redeem all but not
less than all of the then outstanding Rights at a redemption price of $.00025
per Right, appropriately adjusted to reflect any stock split, stock dividend,
recapitalization or similar transaction occurring after the date hereof (such
redemption price being hereinafter referred to as the "Redemption Price"), and
the Company may, at its option, pay the Redemption Price in Common Shares (based
on the "current per share market price," as defined in Section 11.4 hereof, of
the Common Shares at the time of redemption), cash or any other form of
consideration deemed appropriate by the Board of Directors. The redemption of
the Rights by the Board of Directors may be made effective at such time, on such
basis and subject to such conditions as the Board of Directors in its sole
discretion may establish.

                  23.2 Redemption Procedures. Immediately upon the action of the
                       ---------------------
Board of Directors of the Company ordering the redemption of the Rights (or at
such later time as the Board of Directors may establish for the effectiveness of
such redemption), 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. The Company shall promptly give public notice of such redemption;
provided, however, that the failure to give, or any defect in, any such notice
--------  -------
shall not affect the validity of such redemption. The Company shall promptly
give, or cause the Rights Agent to give, notice of such redemption to the
holders of the then outstanding Rights by mailing such notice to all such
holders at their last addresses as they appear upon the registry books of the
Rights Agent or, prior to the Distribution Date, on the registry books of the
transfer agent for the Common Shares. Any notice which is mailed in the manner
herein provided shall be deemed given, whether or not the holder receives the

                                      27
<PAGE>

notice. Each such notice of redemption will state the method by which the
payment of the Redemption Price will be made. Neither the Company nor any of its
Affiliates or Associates may redeem, acquire or purchase for value any Rights at
any time in any manner other than that specifically set forth in this Section 23
or in Section 27, and other than in connection with the purchase, acquisition or
redemption of Common Shares prior to the Distribution Date.

                  Section 24. Notice of Certain Events. In case the Company
                              ------------------------
shall propose at any time after the Distribution Date (a) to pay any dividend
payable in stock of any class to the holders of Preferred Shares or to make any
other distribution to the holders of Preferred Shares (other than a regular
periodic cash dividend at a rate not in excess of 125% of the rate of the last
regular periodic cash dividend theretofore paid or, in case regular periodic
cash dividends have not theretofore been paid, at a rate not in excess of 50% of
the average net income per share of the Company for the four quarters ended
immediately prior to the payment of such dividends, or a stock dividend on, or a
subdivision, combination or reclassification of the Common Shares), or (b) to
offer to the holders of Preferred Shares rights or warrants to subscribe for or
to purchase any additional Preferred Shares or shares of stock of any class or
any other securities, rights or options, or (c) to effect any reclassification
of its Preferred Shares (other than a reclassification involving only the
subdivision of outstanding Preferred Shares), or (d) to effect any consolidation
or merger into or with, or to effect any sale or other transfer (or to permit
one or more of its Subsidiaries to effect any sale or other transfer), in one or
more transactions, of 50% or more of the assets or earning power of the Company
and its Subsidiaries (taken as a whole) to, any other Person (other than
pursuant to a merger or other acquisition agreement of the type described in
Section 1.3(ii)(A)(2)), or (e) to effect the liquidation, dissolution or winding
up of the Company, or (f) to declare or pay any dividend on the Common Shares
payable in Common Shares or to effect a subdivision, combination or
consolidation of the Common Shares (by reclassification or otherwise than by
payment of dividends in Common Shares), then, in each such case, the Company
shall give to the Rights Agent and to each holder of a Right Certificate, in
accordance with Section 25, 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, transfer, liquidation, dissolution, or winding up is to take place
and the date of participation therein by the holders of the Preferred Shares
and/or Common Shares, if any such date is to be fixed, and such notice shall be
so given in the case of any action covered by clause (a) or (b) above at least
ten (10) days prior to the record date for determining holders of the Preferred
Shares for purposes of such action, and in the case of any such other action, at
least ten (10) days prior to the date of the taking of such proposed action or
the date of participation therein by the holders of the Preferred Shares and/or
Common Shares, whichever shall be the earlier.

                  In case any event set forth in Section 11.1.2 of this Rights
Agreement shall occur, then, in any such case, (i) the Company shall as soon as
practicable thereafter give to the Rights Agent and to each holder of a Right
Certificate, in accordance with Section 25, a notice of the occurrence of such
event, which notice shall describe the event and the consequences of the event
to holders of Rights under Section 11.1.2, and (ii) all references in this
Section 24 to Preferred Shares shall be deemed thereafter to refer to Common
Shares and/or, if appropriate, other securities.

                  Notwithstanding anything in this Rights Agreement to the
contrary, prior to the Distribution Date a filing by the Company with the
Securities and Exchange Commission shall

                                      28
<PAGE>

constitute sufficient notice to the holders of securities of the Company,
including the Rights, for purposes of this Rights Agreement and no other notice
need be given.

                  Section 25. Notices. Notices or demands authorized by this
                              -------
Rights Agreement to be given or made by the Rights Agent or by the holder of any
Right Certificate to or on the 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:

                              Amgen Inc.
                              One Amgen Center Drive
                              Thousand Oaks, CA  91320
                              Attention:  Secretary

Subject to the provisions of Section 21, any notice or demand authorized by this
Rights Agreement to be given or made by the Company or by the holder of any
Right 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:

                              American Stock Transfer & Trust Company
                              6201 Fifteenth Avenue
                              Brooklyn, NY  11219
                              Attention:  Shareholder Services Division

Notices or demands authorized by this Rights Agreement to be given or made by
the Company or the Rights Agent to the holder of any Right Certificate (or,
prior to the Distribution Date, to the holder of any certificate representing
Common Shares) 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 26. (a) Supplements and Amendments. For so long as the
                                  --------------------------
Rights are then redeemable and subject to the last two sentences of this Section
26(a), 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
Rights Agreement in any respect without the approval of any holders of Rights or
Common Shares. From and after the time that the Rights are no longer redeemable
and subject to the last two sentences of this Section 26(a), the Company may,
and the Rights Agent shall, if the Company so directs, from time to time
supplement or amend this Rights Agreement without the approval of any holders of
Right Certificates (i) to cure any ambiguity or to correct or supplement any
provision contained herein which may be defective or inconsistent with any other
provisions herein, (ii) to shorten or lengthen any time period hereunder or
(iii) to make any other changes or provisions in regard to matters or questions
arising hereunder which the Company may deem necessary or desirable, including
but not limited to extending the Final Expiration Date; provided, however, that
no such supplement or amendment shall adversely affect the interests of the
holders of Rights as such (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person) and no such supplement or amendment may cause
the Rights again to become redeemable or cause this Rights Agreement again to
become amendable other than in accordance with this sentence; provided further,
that the right of the Board of Directors to extend the Distribution Date shall
not require any amendment or supplement hereunder. Upon the delivery of a
certificate from an appropriate officer of the Company which states that the
proposed

                                      29
<PAGE>

supplement or amendment is in compliance with the terms of this Section 26(a),
the Rights Agent shall execute such supplement or amendment. Notwithstanding
anything herein to the contrary, any supplement or amendment to this Rights
Agreement shall require the affirmative vote of a majority of the Outside
Directors, and any extension of the Final Expiration Date shall require the
affirmative vote of three-quarters of the Outside Directors. In connection with
any such vote, directors, other than Outside Directors, shall vote in the same
proportion as do the Outside Directors, to the extent permitted under applicable
law.

                  (b) Notwithstanding anything in this Rights Agreement to the
contrary, on and after March 12, 2004, the provisions of Section 1.1(b), 1.3(a),
1.11 and the last two sentences of Section 26(a) shall terminate and such
sections, and any references to any such Section or sentences or to "Approved
Stockholder" or "Standstill Agreement" in this Rights Agreement (except in this
Section 26(b)) shall be deemed deleted in their entirety. In addition, upon such
termination, Exhibit C shall be deemed to be automatically amended in accordance
with this Section 26(b) without any action on the part of the Company.

                  Section 27.  Exchange.
                               --------

                  27.1 Exchange of Common Shares for Rights. The Board of
                       ------------------------------------
Directors of the Company may, at its option, at any time after the occurrence of
a Trigger Event, exchange Common Shares for 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 11.1.2) by exchanging one Common Share per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such amount per Right being
hereinafter referred to as the "Exchange Consideration"). Notwithstanding the
foregoing, (i) the Board of Directors shall not be empowered to effect such
exchange at any time after any Person (other than the Company, any Subsidiary of
the Company, any employee benefit plan of the Company or any such Subsidiary, or
any entity holding Common Shares for or pursuant to the terms of any such plan),
together with all Affiliates and Associates of such Person, becomes the
Beneficial Owner of 50% or more of the Common Shares then outstanding and (ii)
the Board shall not be empowered to effect an exchange for more than that number
of Rights for which there are sufficient Common Shares authorized but unissued,
or held by the Company as treasury shares, to permit the exchange for Rights.

                  27.2 Exchange Procedures. Immediately upon the action of the
                       -------------------
Board of Directors of the Company ordering the exchange for any Rights pursuant
to Section 27.1 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 one Common Share. The Company 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 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 Common Shares for Rights will be effected and, in the event of any
partial exchange, the number of Rights which will be exchanged. Any partial
exchange shall be effected pro rata based on the number of Rights

                                      30
<PAGE>

(other than the Rights which have become void pursuant to the provisions of
Section 11.1.2) held by each holder of Rights.

                  Section 28. Successors. All the covenants and provisions of
                              ----------
this Rights 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. Benefits of this Rights Agreement. Nothing in this
                              ---------------------------------
Rights Agreement shall be construed to give to any Person or corporation other
than the Company, the Rights Agent and the registered holders of the Right
Certificates (and, prior to the Distribution Date, the Common Shares) any legal
or equitable right, remedy or claim under this Rights Agreement; but this Rights
Agreement shall be for the sole and exclusive benefit of the Company, the Rights
Agent and the registered holders of the Right Certificates (and, prior to the
Distribution Date, the Common Shares).

                  Section 30. Determinations and Actions by the Board of
                              ------------------------------------------
Directors. The Board of Directors of the Company shall have the exclusive power
---------
and authority to administer this Agreement and to exercise the 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 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.

                  Section 31. Severability. If any term, provision, covenant or
                              ------------
restriction of this Rights 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 Rights
Agreement shall remain in full force and effect and shall in no way be affected,
impaired or invalidated.

                  Section 32. Governing Law. This Rights Agreement and each
                              -------------
Right 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 to
be made and performed entirely within such State.

                  Section 33. Counterparts. This Rights 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 Heading. Descriptive headings of the
                              -------------------
several Sections of this Rights Agreement are inserted for convenience only and
shall not control or affect the meaning or construction of any of the provisions
hereof.

                                      31
<PAGE>

                  IN WITNESS WHEREOF, the parties hereto have caused this Rights
Agreement to be duly executed and their respective corporate seals to be
hereunto affixed, all as of the day and year first above written.

                                    AMGEN INC.



Date: December 13, 2000             By: /s/ Kathryn E. Falberg
                                       ---------------------------------
                                    Name: Kathryn E. Falberg
                                    Title: Senior Vice President, Finance and
                                           Corporate Development, and Chief
                                           Financial Officer


[SEAL]


                                    AMERICAN STOCK TRANSFER & TRUST COMPANY

Date: December 13, 2000             By: /s/ Herbert J. Lemmer
                                       ---------------------------------------
                                    Name: Herbert J. Lemmer
                                    Title: Vice President



[SEAL]

                                      S-1
<PAGE>

                                                                       EXHIBIT A
                                                                       ---------

                           CERTIFICATE OF DESIGNATIONS

                                       of

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                                   AMGEN INC.

                         (Pursuant to Section 151 of the
                       Delaware General Corporation Law)

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


         Amgen Inc., a corporation organized and existing under the General
Corporation Law of the State of Delaware (hereinafter called the "Corporation"),
hereby certifies that the following resolution was adopted by the Board of
Directors of the Corporation as required by Section 151 of the General
Corporation Law at a meeting duly called and held on December 12, 2000.

         RESOLVED, that pursuant to the authority granted to and vested in the
Board of Directors of this Corporation (hereinafter called the "Board of
Directors" or the "Board") in accordance with the provisions of the Certificate
of Incorporation, the Board of Directors hereby creates a series of Preferred
Stock, par value $.0001 per share (the "Preferred Stock"), of the Corporation
and hereby states the designation and number of shares, and fixes the relative
rights, preferences, and limitations thereof as follows:

         Series A Junior Participating Preferred Stock:

         Section 1. Designation and Amount. The shares of such series shall be
                    ----------------------
designated as "Series A Junior Participating Preferred Stock" (the "Series A
Preferred Stock") and the number of shares constituting the Series A Preferred
Stock shall be 687,500. Such number of shares may be increased or decreased by
resolution of the Board of Directors; provided, that no decrease shall reduce
the number of shares of Series A Preferred Stock to a number less than the
number of shares then outstanding plus the number of shares reserved for
issuance upon the exercise of outstanding options, rights or warrants or upon
the conversion of any outstanding securities issued by the Corporation
convertible into Series A Preferred Stock.

                                      A-1
<PAGE>

         Section 2.  Dividends and Distributions.
                     ---------------------------

                  (A) Subject to the rights of the holders of any shares of any
         series of Preferred Stock (or any similar stock) ranking prior and
         superior to the Series A Preferred Stock with respect to dividends, the
         holders of shares of Series A Preferred Stock, in preference to the
         holders of Common Stock, par value $.0001 per share (the "Common
         Stock"), of the Corporation, and of any other junior 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 first 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 Preferred Stock, in an amount per share (rounded to the
         nearest cent) equal to the greater of (a) $1.00 or (b) subject to the
         provision for adjustment hereinafter set forth, 4,000 times the
         aggregate per share amount of all cash dividends, and 4,000 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 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 Preferred
         Stock. In the event the Corporation shall at any time declare or pay
         any dividend on the Common Stock payable in shares of Common Stock, or
         effect a subdivision, combination or consolidation of the outstanding
         shares of Common Stock (by reclassification or otherwise than by
         payment of a dividend in shares of Common Stock) into a greater or
         lesser number of shares of Common Stock, then in each such case the
         amount to which holders of shares of Series A Preferred Stock were
         entitled immediately prior to such event under clause (b) of the
         preceding sentence shall be adjusted by multiplying such amount 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 Preferred Stock as provided in paragraph (A) of this
         Section 2 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 $1.00 per share on the Series A
         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 Preferred Stock from the Quarterly
         Dividend Payment Date next preceding the date of issue of such shares,
         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 Preferred Stock entitled to receive a
         quarterly dividend and

                                      A-2
<PAGE>

         before such Quarterly Dividend Payment Date, in either of which events
         such dividends shall begin to accrue and be cumulative from such
         Quarterly Dividend Payment Date. Accrued but unpaid dividends shall not
         bear interest. Dividends paid on the shares of Series A 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 Preferred Stock entitled to receive
         payment of a dividend or distribution declared thereon, which record
         date shall be not more than 60 days prior to the date fixed for the
         payment thereof.

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

                  (A) Subject to the provision for adjustment hereinafter set
         forth, each share of Series A Preferred Stock shall entitle the holder
         thereof to 4,000 votes on all matters submitted to a vote of the
         stockholders of the Corporation. In the event the Corporation shall at
         any time declare or pay any dividend on the Common Stock payable in
         shares of Common Stock, or effect a subdivision, combination or
         consolidation of the outstanding shares of Common Stock (by
         reclassification or otherwise than by payment of a dividend in shares
         of Common Stock) into a greater or lesser number of shares of Common
         Stock, then in each such case the number of votes per share to which
         holders of shares of Series A Preferred Stock were entitled immediately
         prior to such event shall be adjusted by multiplying such 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) Except as otherwise provided herein, in any other
         Certificate of Designations creating a series of Preferred Stock or any
         similar stock, or by law, the holders of shares of Series A Preferred
         Stock and the holders of shares of Common Stock and any other capital
         stock of the Corporation having general voting rights shall vote
         together as one class on all matters submitted to a vote of
         stockholders of the Corporation.

                  (C) Except as set forth herein, or as otherwise provided by
         law, holders of Series A 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.

Section 4. Certain Restrictions.
           --------------------

                  (A) Whenever quarterly dividends or other dividends or
         distributions payable on the Series A 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 Preferred Stock outstanding shall have been paid in full, the
         Corporation shall not:

                                      A-3
<PAGE>

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

                           (ii)  declare or pay dividends, 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 Preferred Stock, except
                  dividends paid ratably on the Series A 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;

                           (iii) redeem or purchase or otherwise acquire for
                  consideration shares of any stock ranking junior (either as to
                  dividends or upon liquidation, dissolution or winding up) to
                  the Series A Preferred Stock, provided that the Corporation
                  may at any time redeem, purchase or otherwise acquire shares
                  of any such junior stock in exchange for shares of any stock
                  of the Corporation ranking junior (either as to dividends or
                  upon dissolution, liquidation or winding up) to the Series A
                  Preferred Stock; or

                           (iv) redeem or purchase or otherwise acquire for
                  consideration any shares of Series A Preferred Stock, or any
                  shares of stock ranking on a parity with the Series A
                  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 such shares 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.

         Section 5. Reacquired Shares. Any shares of Series A 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
subject to the conditions and restrictions on issuance set forth herein, in the
Certificate of Incorporation, or in any other Certificate of Designations
creating a series of Preferred Stock or any similar stock or as otherwise
required by law.

         Section 6. Liquidation, Dissolution or Winding Up. Upon any
                    --------------------------------------
liquidation, dissolution or winding up of the Corporation, no distribution shall
be made (1) to the holders of shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock unless, prior thereto, the holders of shares of Series A
Preferred Stock shall have received $4,000 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not declared,
to the date of such payment, provided that the holders of shares of Series A
Preferred Stock shall be entitled to receive an aggregate amount per share,
subject to

                                      A-4
<PAGE>

the provision for adjustment hereinafter set forth, equal to 4,000 times the
aggregate amount to be distributed per share to holders of shares of Common
Stock, or (2) to the holders of shares of stock ranking on a parity (either as
to dividends or upon liquidation, dissolution or winding up) with the Series A
Preferred Stock, except distributions made ratably on the Series A Preferred
Stock and all such parity stock in proportion to the total amounts to which the
holders of all such shares are entitled upon such liquidation, dissolution or
winding up. In the event the Corporation shall at any time declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision, combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the aggregate amount to which holders of shares of Series A
Preferred Stock were entitled immediately prior to such event under the proviso
in clause (1) of the preceding sentence shall be adjusted by multiplying such
amount 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 are outstanding immediately prior to
such event.

         Section 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 Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 4,000 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.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision,
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series A Preferred Stock shall be adjusted by
multiplying such amount 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.

          Section 8. No Redemption. The shares of Series A Preferred Stock shall
                     -------------
not be redeemable.

         Section 9. Rank. The Series A Preferred Stock shall rank, with respect
                    ----
to the payment of dividends and the distribution of assets, junior to all series
of any other class of the Corporation's Preferred Stock, except to the extent
that any such other series specifically provides that it shall rank on a parity
with or junior to the Series A Preferred Stock.

         Section 10. Amendment. The 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 Preferred Stock
so as to affect them adversely without the affirmative vote of the holders of at
least two-thirds of the outstanding shares of Series A Preferred Stock, voting
together as a single class.

                                      A-5
<PAGE>

         IN WITNESS WHEREOF, this Certificate of Designations is executed on
behalf of the Corporation by its Chairman of the Board and attested by its
Secretary this ___ day of December, 2000.


                                            ______________________________
                                            Chairman of the Board

Attest:


_______________________
Secretary

                                      A-6
<PAGE>

                                                                       EXHIBIT B
                                                                       ---------


                           [Form of Right Certificate]



Certificate No. R-                                                _______ Rights



         NOT EXERCISABLE AFTER DECEMBER 12, 2010 OR EARLIER IF NOTICE OF
         REDEMPTION OR EXCHANGE IS GIVEN OR IF THE COMPANY IS MERGED OR ACQUIRED
         PURSUANT TO AN AGREEMENT OF THE TYPE DESCRIBED IN SECTION 1.3(ii)(A)(2)
         OF THE RIGHTS AGREEMENT. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE
         OPTION OF THE COMPANY, AT $.001 PER RIGHT ON THE TERMS SET FORTH IN THE
         RIGHTS AGREEMENT. UNDER CERTAIN CIRCUMSTANCES (SPECIFIED IN SECTION
                           -------------------------------------------------
         11.1.2 OF THE RIGHTS AGREEMENT), RIGHTS BENEFICIALLY OWNED BY AN
         ----------------------------------------------------------------
         ACQUIRING PERSON, OR ITS AFFILIATES OR ASSOCIATES, OR ANY SUBSEQUENT
         --------------------------------------------------------------------
         HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED
         ----------------------------------------------
         BY THIS CERTIFICATE ARE HELD OR HAVE BEEN HELD BY A PERSON WHO IS OR
         WAS AN ACQUIRING PERSON OR AN ASSOCIATE OR AFFILIATE OF AN ACQUIRING
         PERSON OR A NOMINEE THEREOF. THIS RIGHT CERTIFICATE AND THE RIGHTS
         REPRESENTED HEREBY HAVE BECOME NULL AND VOID AS SPECIFIED IN SECTION
         11.1.2 OF THE RIGHTS AGREEMENT.]

                                Right Certificate

                                   Amgen Inc.

             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 Amended and
Restated Rights Agreement, dated as of December 12, 2000, as the same may be
amended from time to time (the "Rights Agreement"), between Amgen Inc., a
Delaware corporation (the "Company"), and American Stock Transfer & Trust
Company, a New York corporation, as Rights Agent (the "Rights Agent"), to
purchase from the Company at any time after the Distribution Date and prior to
5:00 P.M. (California time) on December 12, 2010, at the offices of the Rights
Agent, or its successors as Rights Agent, designated for such purpose, one
four-thousandth of a fully paid, nonassessable share of Series A Junior
Participating Preferred Stock, par value $.0001 per share (the "Preferred
Shares") of the Company, at a purchase price of $350.00 per one four-thousandth
of a share, subject to adjustment (the "Purchase Price"), upon presentation and
surrender of this Right Certificate with the Form of Election to Purchase and
certification duly executed. The number of Rights evidenced by this Right
Certificate (and the number of one four-thousandths of a Preferred Share which
may be purchased upon exercise thereof) set forth above, and the Purchase Price
set forth above, are the number and Purchase Price as of December 12, 2000 based
on the Preferred Shares as constituted at such date. Capitalized terms used in
this Right Certificate without definition shall have the meanings ascribed to
them in the Rights Agreement. As provided in the Rights Agreement, the Purchase
Price and the number of Preferred Shares which may be purchased upon the
exercise of

                                      B-1
<PAGE>

the Rights evidenced by this Right Certificate are subject to modification and
adjustment upon the happening of certain events.

                  This Right 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 Right Certificates.
Copies of the Rights Agreement are on file at the principal offices of the
Company and the Rights Agent.

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

                  Subject to the provisions of the Rights Agreement, the Board
of Directors may, at its option, (i) redeem the Rights evidenced by this Right
Certificate at a redemption price of $.00025 per Right or (ii) exchange Common
Shares for the Rights evidenced by this Certificate, in whole or in part.

                  No fractional Preferred Shares will be issued upon the
exercise of any Right or Rights evidenced hereby (other than fractions of
Preferred Stock which are integral multiples of one four-thousandth of a share
of Preferred Stock, which may, at the election of the Company, be evidenced by
depository receipts), but in lieu thereof a cash payment will be made, as
provided in the Rights Agreement.

                  No holder of this Right Certificate, as such, shall be
entitled to vote or receive dividends or be deemed for any purpose the holder of
the Preferred Shares or of any other securities of the Company which 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 Right
Certificate shall have been exercised as provided in the Rights Agreement.

                  If any term, provision, covenant or restriction of the Rights
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 the Rights Agreement shall remain in full force
and effect and shall in no way be affected, impaired or invalidated.

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

                                      B-2
<PAGE>

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


Attest:                                     AMGEN INC.


By ______________________                   By _______________
   Title:                                      Title:


Countersigned:


AMERICAN STOCK TRANSFER & TRUST COMPANY


By _____________________________
   Authorized Signature

                                      B-3
<PAGE>

                  [Form of Reverse Side of Right Certificate]

                              FORM OF ASSIGNMENT
                              ------------------

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

FOR VALUE RECEIVED
hereby sells, assigns and transfers unto

                        (Please print name and address
                                of transferee)


this Right Certificate and the Rights evidenced thereby, together with all
right, title and interest therein, and does hereby irrevocably constitute and
appoint ______________________Attorney, to transfer the within Right Certificate
on the books of the within-named Company, with full power of substitution.

Dated: __________________




                                   Signature

Signature Guaranteed:



          Signatures must be guaranteed by an "eligible guarantor institution"
as defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of
1934, as amended.

                                      B-4
<PAGE>

The undersigned hereby certifies by checking the appropriate boxes that:

                  (1) the Rights evidenced by this Right Certificate [ ] are [ ]
are not beneficially owned by an Acquiring Person or an Affiliate or an
Associate thereof; and

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

Dated:  __________________


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

                                      B-5
<PAGE>

                          FORM OF ELECTION TO PURCHASE
                          ----------------------------

                     (To be executed if holder desires to
                       exercise the Right Certificate.)

To: Amgen Inc.

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

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 Right
Certificate, a new Right Certificate for the balance remaining 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: __________________

                                                         ____________________
                                                         Signature

Signature Guaranteed:


             Signatures must be guaranteed by an "eligible guarantor
institution" as defined in Rule 17Ad-15 promulgated under the Securities
Exchange Act of 1934, as amended.

                                      B-6
<PAGE>

The undersigned hereby certifies by checking the appropriate boxes that:

             (1) the Rights evidenced by this Right Certificate [ ] are [ ] are
not beneficially owned by an Acquiring Person or an Affiliate or an Associate
thereof; and

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

Dated:_______________

                                                         _________________
                                                         Signature


                                     NOTICE
                                     ------

             The signature in the foregoing Form of Assignment and Form of
Election to Purchase must conform to the name as written upon the face of this
Right Certificate in every particular, without alteration or enlargement or any
change whatsoever.

             In the event the certification set forth above in the Form of
Assignment or Form of Election to Purchase is not completed, the Company will
deem the beneficial owner of the Rights evidenced by this Right Certificate to
be an Acquiring Person or an Affiliate or Associate hereof and, in the case of
an Assignment, will affix a legend to that effect on any Right Certificates
issued in exchange for this Right Certificate.

                                      B-7
<PAGE>

                                                                       EXHIBIT C
                                                                       ---------

              As described in the Rights Agreement, Rights which
              --------------------------------------------------
are held by or have been held by Acquiring Persons or Associates or Affiliates
------------------------------------------------------------------------------
   thereof (as defined in the Rights Agreement) shall become null and void.
   ------------------------------------------------------------------------

                         SUMMARY OF RIGHTS TO PURCHASE
                               PREFERRED SHARES

             On February 18, 1997 the Board of Directors of Amgen Inc. (the
"Company") declared a dividend of one Right for each share of common stock,
$.0001 par value (the "Common Shares"), of the Company outstanding at the close
of business on March 21, 1997 (the "Record Date"). As long as the Rights are
attached to the Common Shares, the Company will issue one Right (subject to
adjustment) with each new Common Share so that all such shares will have
attached Rights. When exercisable, each Right will entitle the registered holder
to purchase from the Company one four-thousandth of a share of Series A Junior
Participating Preferred Stock (the "Preferred Shares") at a price of $350.00
per one four-thousandth of a Preferred Share, subject to adjustment (the
"Purchase Price"). The description and terms of the Rights are set forth in an
Amended and Restated Rights Agreement, dated as of December 12, 2000, as the
same may be amended from time to time (the "Rights Agreement"), between the
Company and American Stock Transfer & Trust Company, as Rights Agent (the
"Rights Agent").

             Until the earlier to occur of (i) ten (10) days following a public
announcement that a person or group of affiliated or associated persons has
acquired, or obtained the right to acquire, beneficial ownership of 10% or more
of the Common Shares (or in the case of an Approved Stockholder (as defined
below), 20% or more of the Common Shares) (an "Acquiring Person") or (ii) ten
business (10) days following the commencement or announcement of an intention to
make a tender offer or exchange offer the consummation of which would result in
the beneficial ownership by a person or group of 10% or more of the Common
Shares (the earlier of (i) and (ii) being called the "Distribution Date"), the
Rights will be evidenced, with respect to any of the Common Share certificates
outstanding as of the Record Date, by such Common Share certificate together
with a copy of this Summary of Rights. An "Approved Stockholder" means any
stockholder who is approved by a majority of the directors who are neither
officers or employees of the Company or representatives of an Acquiring Person
or an Approved Stockholder ("Outside Directors") and who enters into a
standstill agreement with the Company so long as such person owns less than 20%
of the outstanding Common Shares. All provisions in the Rights Agreement
relating to "Approved Stockholder" automatically terminate on March 12, 2004.

             The Rights Agreement provides that until the Distribution Date (or
earlier redemption or expiration of the Rights), the Rights will be transferred
with and only with the Common Shares. Until the Distribution Date (or earlier
redemption or expiration of the Rights), new Common Share certificates issued
after the close of business on the Record Date upon transfer or new issuance of
the Common Shares will contain a notation incorporating the Rights Agreement by
reference. Until the Distribution Date (or earlier redemption, exchange,
termination or expiration of the Rights), the surrender for transfer of any
certificates for Common Shares, with or without a copy of this Summary of
Rights, will also constitute the transfer of the Rights associated with the
Common Shares represented by such certificate. As soon as practicable following
the Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.

                                      C-1
<PAGE>

             The Rights are not exercisable until the Distribution Date. The
Rights will expire on December 12, 2010, subject to the Company's right to
extend such date (the "Final Expiration Date"), unless earlier redeemed or
exchanged by the Company or terminated.

             Each Preferred Share purchasable upon exercise of the Rights will
be entitled to a minimum preferential quarterly dividend payment of $1.00 per
share but will be entitled to an aggregate dividend of 4,000 times the dividend,
if any, declared per Common Share. In the event of liquidation, the holders of
the Preferred Shares will be entitled to a minimum preferential liquidation
payment of $4,000 per share but will be entitled to an aggregate payment of
4,000 times the payment made per Common Share. Each Preferred Share will have
4,000 votes and will vote together with the Common Shares. Finally, in the event
of any merger, consolidation or other transaction in which Common Shares are
exchanged, each Preferred Share will be entitled to receive 4,000 times the
amount received per Common Share. These rights are protected by customary
antidilution provisions. Because of the nature of the Preferred Share's
dividend, liquidation and voting rights, the value of one four-thousandth of a
Preferred Share purchasable upon exercise of each Right should approximate the
value of one Common Share.

             The Purchase Price payable, and the number of Preferred Shares or
other securities or property issuable, upon exercise of the Rights are subject
to adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares or convertible
securities at less than the current market price of the Preferred Shares or
(iii) upon the distribution to holders of the Preferred Shares of evidences of
indebtedness, cash, securities or assets (excluding regular periodic cash
dividends at a rate not in excess of 125% of the rate of the last regular
periodic cash dividend theretofore paid or, in case regular periodic cash
dividends have not theretofore been paid, at a rate not in excess of 50% of the
average net income per share of the Company for the four quarters ended
immediately prior to the payment of such dividend, or dividends payable in
Preferred Shares (which dividends will be subject to the adjustment described in
clause (i) above)) or of subscription rights or warrants (other than those
referred to above).

             In the event that a Person becomes an Acquiring Person or if the
Company were the surviving corporation in a merger with an Acquiring Person or
any affiliate or associate of an Acquiring Person and the Common Shares were not
changed or exchanged, each holder of a Right, other than Rights that are or were
acquired or beneficially owned by the Acquiring Person (which Rights will
thereafter be void), will thereafter have the right to receive upon exercise
that number of Common Shares having a market value of two times the then current
Purchase Price of the Right. With certain exceptions, in the event that the
Company were acquired in a merger or other business combination transaction or
more than 50% of its assets or earning power were sold, proper provision shall
be made so that each holder of a Right shall thereafter have the right to
receive, upon the exercise thereof at the then current Purchase Price of the
Right, that number of shares of common stock of the acquiring company which at
the time of such transaction would have a market value of two times the then
current Purchase Price of the Right.

             At any time after a Person becomes an Acquiring Person and prior to
the acquisition by such Acquiring Person of 50% or more of the outstanding
Common Shares, the Board of Directors may cause the Company to acquire the
Rights (other than Rights owned by an Acquiring Person which have become void),
in whole or in part, in exchange for one Common Share per Right (subject to
adjustment).

                                      C-2
<PAGE>

             No adjustment in the Purchase Price will be required until
cumulative adjustments require an adjustment of at least 1% in such Purchase
Price. No fractional shares will be issued and in lieu thereof, a payment in
cash will be made based on the market price of the Preferred Shares on the last
trading date prior to the date of exercise.

             The Rights may be redeemed in whole, but not in part, at a price of
$.00025 per Right (the "Redemption Price") by the Board of Directors at any time
prior to the time that an Acquiring Person has become such. The redemption of
the Rights may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

             Until a Right is exercised, the holder thereof, as such, will have
no rights as a stockholder of the Company beyond those as an existing
stockholder, including, without limitation, the right to vote or to receive
dividends.

             Subject to the last sentence of this paragraph, any of the
provisions of the Rights Agreement may be amended by the Board of Directors of
the Company for so long as the Rights are then redeemable, and after the Rights
are no longer redeemable, the Company may amend or supplement the Rights
Agreement in any manner that does not adversely affect the interests of the
holders of the Rights. Notwithstanding anything herein to the contrary, any
supplement or amendment to the Rights Agreement shall require the affirmative
vote of a majority of the Outside Directors, and any extension of the Final
Expiration Date shall require the affirmative vote of three-quarters of the
Outside Directors.

             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


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