AGOURON PHARMACEUTICALS INC
8-A12G/A, 1999-01-19
PHARMACEUTICAL PREPARATIONS
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                                   Form 8-A/A

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                 Amendment No. 3

                For Registration of Certain Classes of Securities
                     Pursuant to Section 12(b) or (g) of the
                         Securities Exchange Act of 1934


                          AGOURON PHARMACEUTICALS, INC.
             (Exact name of registrant as specified in its charter)


California                                                    33-0061928
(State of incorporation                                       (IRS Employer
or organization)                                        Identification No.)

                          10350 North Torrey Pines Road
                           La Jolla, California 92037
                    (Address of principal executive offices)

Securities to be registered pursuant to Section 12(b) of the Act:

Title of each class                               Name of each exchange on which
to be so registered                               each class is to be registered

         None                                                          N/A

If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(b) of the  Exchange  Act and is  effective  upon filing  pursuant to
General Instruction A.(c), please check the following box. / /

If this Form relates to the  registration  of a class of securities  pursuant to
Section  12(g)  of  the  Exchange  Act  and is  effective  pursuant  to  General
Instruction A.(d), please check the following box. / /

Securities Act registration statement file number to which this form relates

Securities to be registered pursuant to Section 12(g) of the Act:

Preferred Stock Purchase Rights (the "Rights")


<PAGE>


         The Registrant  hereby amends the following  items of its  Registration
Statement on Form 8-A dated November 7, 1996, as follows:

Item 1.           Description of Registrant's Securities to be Registered.

                  Pursuant  to  action  of the  Board of  Directors  of  Agouron
Pharmaceuticals,  Inc. (the "Company")  effective  November 10, 1998, the Rights
Agreement  attached  to the Form 8-A  filed  with the  Securities  and  Exchange
Commission on November 8, 1996, as thereafter amended,  was amended and restated
to, among other things,  (i) change the definition of "Acquiring Person" to mean
any person who becomes a beneficial owner of common shares  representing  twenty
percent (20%) or more of the common shares then  outstanding;  and (ii) effect a
two-for-one split of the rights with a corresponding  adjustment of the purchase
price therefor (reflecting a two-for-one split of the Company's common shares in
August  1997),  all as  more  fully  set  forth  (together  with  certain  other
modifications)  in the form of Amended and Restated  Rights  Agreement  attached
hereto as Exhibit 1.

Item 2.                                     Exhibits.

1.       Amended and Restated Rights Agreement dated as of November 10, 1998,
         between Agouron Pharmaceuticals, Inc. and ChaseMellon
         Shareholder Services, L.L.C.

                                    SIGNATURE

                  Pursuant to the  requirements  of Section 12 of the Securities
Exchange Act of 1934, as amended,  the Registrant has duly caused this Amendment
No. 3 to be signed on its behalf by the undersigned, thereto duly authorized.

                  Dated:  January 19, 1999.

                          AGOURON PHARMACEUTICALS, INC.

                          By:      /s/ PETER JOHNSON         
                                   Peter Johnson
                                   President and
                                   Chief Executive Officer


<PAGE>



                                  EXHIBIT INDEX

Exhibit

1.       Amended and Restated Rights Agreement dated as of November 10, 1998,
         between Agouron Pharmaceuticals, Inc. and ChaseMellon
         Shareholder Services, L.L.C.



                                           EXHIBIT 4.1
                                                                               
                          AGOURON PHARMACEUTICALS, INC.


                                       and


                    CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


                                  Rights Agent


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



                      Amended and Restated Rights Agreement



                          Dated as of November 10, 1998




<PAGE>





                                TABLE OF CONTENTS

                                                                            PAGE


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

2.       Appointment of Rights Agent...........................................4

3.       Issue of Rights Certificates..........................................5

4.       Form of Rights Certificates...........................................6

5.       Countersignature and Registration.....................................6

6.       Transfer,  Split Up, Combination and Exchange of Rights Certificates;  
         Mutilated,  Destroyed,  Lost or Stolen Rights Certificates............7

7.       Exercise of Rights; Purchase Price; Expiration Date of Rights.........8

8.       Cancellation and Destruction of Rights Certificates..................10

9.       Reservation and Availability of Preferred Shares.....................10

10.      Preferred Shares Record Date.........................................11

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

12.      Certificate of Adjusted Purchase Price or Number of Shares...........18

13.      Consolidation, Merger or Sale or Transfer of Assets or Earning Power.18

14.      Additional Covenants.................................................21

15.      Fractional Rights and Fractional Shares..............................21

16.      Rights of Action.....................................................22

17.      Agreement of Rights Holders..........................................23

18.      Rights Certificate Holder Not Deemed a Shareholder...................23

19.      Concerning the Rights Agent..........................................24

20.      Merger or Consolidation or Change of Name of Rights Agent............24

21.      Duties of Rights Agent...............................................25

22.      Change of Rights Agent...............................................27

23.      Issuance of New Rights Certificates..................................27

24.      Redemption, Termination and Exchange.................................28

25.      Notice of Certain Events.............................................30


<PAGE>




26.      Notices..............................................................31

27.      Supplements and Amendments...........................................32

28.      Determination and Actions by the Board, etc..........................32

29.      Successors...........................................................33

30.      Benefits of This Agreement...........................................33

31.      Severability.........................................................33

32.      Governing Law........................................................33

33.      Counterparts.........................................................33

34.      Descriptive Headings.................................................33



Exhibit A           -      Form of Rights Certificate........................A-1



<PAGE>



                                                                   
                      AMENDED AND RESTATED RIGHTS AGREEMENT

         THIS AMENDED AND RESTATED RIGHTS AGREEMENT (this "Agreement"), dated as
of November  10, 1998 (the  "Effective  Date"),  is made by and between  AGOURON
PHARMACEUTICALS, INC., a California corporation (the "Company"), and CHASEMELLON
SHAREHOLDER  SERVICES,  L.L.C.,  a New Jersey  limited  liability  company  (the
"Rights Agent").

                              W I T N E S S E T H

         WHEREAS,  the Board of  Directors  of the  Company  (the  "Board")  has
previously  adopted and  implemented a  shareholder  rights plan governed by the
terms of the  Rights  Agreement  dated as of  November  7, 1996  (the  "Original
Agreement") and, pursuant thereto,  (i) distributed one preferred share purchase
right (a "Right") for each share of common stock,  no par value,  of the Company
(the "Common  Stock")  outstanding at the close of business on November 21, 1996
and (ii) authorized the issue of one Right for each share of Common Stock issued
after November 21, 1996.

         WHEREAS,  on November 10, 1998,  the Board  approved this amendment and
restatement of the Original  Agreement to be effective as of the Effective Date.
In  connection  with such  amendment and  restatement,  the Board (i) effected a
two-for-one  split of the Rights on the Effective Date (so that,  from and after
the Effective Date,  each share of Common Stock shall have one Right  associated
therewith),  with a corresponding  adjustment of the purchase price for a Right,
and (ii) made certain  other  modifications  to the Original  Agreement (as such
modifications are reflected herein).

         WHEREAS,  each Right  initially  represents  the right to purchase  one
one-ten thousandth of a share of the Company's Series B Participating  Preferred
Stock, no par value ("Series B Preferred  Stock"),  such preferred shares having
the  rights  and  preferences  set  forth  in the  Certificate  of  Designation,
Preferences  and Rights of Series B  Participating  Preferred Stock which, as of
the  Effective  Date,  is on file  with the  Secretary  of State of the State of
California, upon the terms and subject to the conditions herein set forth.

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

         1.       CERTAIN DEFINITIONS.  For purposes of this Agreement,
the following terms have the meanings indicated:

         (a)  "Acquiring  Person"  shall  mean  any  Person  (as  such  term  is
hereinafter defined) who or which, together with all Affiliates (as such term is
hereinafter  defined) and Associates  (as such term is  hereinafter  defined) of
such Person,  shall be or become, after the Effective Date, the Beneficial Owner
(as such  term is  hereinafter  defined)  of  Common  Shares  (as  such  term is
hereinafter  defined)  representing  twenty  percent (20%) or more of the Common
Shares then  outstanding or who was such a Beneficial  Owner,  at any time on or
after  the  Effective  Date,  whether  or not such  Person  continues  to be the
Beneficial Owner of Common Shares  representing  twenty percent (20%) or more of
the Common Shares outstanding. NOTWITHSTANDING the foregoing:

                  (i) in no event shall a Person who or which, together with all
         Affiliates  and Associates of such Person,  is the Beneficial  Owner of
         Common Shares representing less than twenty percent (20%) of the Common
         Shares  outstanding  become an Acquiring Person solely as a result of a
         reduction  of  the  number  of  Common  Shares  outstanding  (including
         repurchases  of  outstanding  Common  Shares  by  the  Company),  which
         reduction  increases the  percentage of the Common Shares  beneficially
         owned by such Person;  PROVIDED,  HOWEVER, that any subsequent increase
         in the amount of Common Shares  beneficially  owned by any such Person,
         together with all Affiliates and Associates of such Person, without the
         prior  written  approval  of the Board shall cause such Person to be an
         Acquiring Person (unless,  measured at such time, such Person would not
         be an Acquiring Person);

                  (ii) the term Acquiring Person shall not mean (A) the Company,
         (B)  any  subsidiary  of the  Company  (as  such  term  is  hereinafter
         defined),  (C) any  employee  benefit plan of the Company or any of its
         subsidiaries,   (D)  any  entity  holding  securities  of  the  Company
         organized, appointed or established by the


<PAGE>


      Company or any of its subsidiaries for or pursuan to the terms of any such
         plan or (E) any  underwriter  acting in good faith in a firm commitment
         underwriting  of an offering of the  Company's  securities  pursuant to
         arrangements  with the  Company  which have been  approved by the Board
         (HOWEVER,  the exception provided by this clause (E) shall no longer be
         available  in the  event  that any such  underwriter  is  otherwise  an
         Acquiring  Person on or after the date  which is forty  (40) days after
         the date of initial  acquisition  of the  Company's  securities by such
         underwriter in connection with such offering); and

                  (iii) no Person shall be deemed to be an Acquiring  Person if:
         (A) any Schedule  13D under the  Securities  Exchange  Act of 1934,  as
         amended (the "Exchange  Act"),  or any comparable or successor  report,
         filed (or  required to be filed) by such Person does not (or would not)
         state any intention to or reserve the right to control or influence the
         management  or  policies of the Company or engage in any of the actions
         specified  in Item 4 (or any  comparable  or  successor  Item)  of such
         Schedule 13D (other than the disposition of Common Shares),  (B) either
         (1) within  two  Business  Days of being  requested  by the  Company to
         advise the Company regarding the same, such Person certifies in writing
         to the Company that such Person acquired Beneficial Ownership of Common
         Shares  representing  twenty percent (20%) or more of the Common Shares
         outstanding  inadvertently  or  without  knowledge  of the terms of the
         Rights,  or (2) the Board determines in good faith that such Person has
         become an Acquiring  Person  inadvertently,  (C) such Person divests as
         promptly as practicable a sufficient number of securities  representing
         Common  Shares  so  that  such  Person  shall  not be  deemed  to be an
         Acquiring  Person  pursuant to the first sentence of this Section 1(a),
         and  (D)  promptly   following   such  Person's   divestiture  of  such
         securities,  such Person  certifies to the Board that such Person is no
         longer an Acquiring Person as defined pursuant to the first sentence of
         this Section 1(a).

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

         (c) 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;

                  (ii) which such Person or any of such  Person's  Affiliates or
Associates has:

                           (A) the right or obligation to acquire  (whether such
         right or obligation is  exercisable  or effective  immediately  or only
         after the passage of time)  pursuant to any  agreement,  arrangement or
         understanding  (whether  or not in  writing)  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," 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 payment or
         exchange; or

                           (B) the right to vote or dispose of  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 or  understanding  to vote such security
         (1) arises solely from a revocable  proxy given 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 by such Person 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  (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  with  which  such  Person  or  any of  such  Person's
         Affiliates or


<PAGE>


     Associates  have  otherwise  formed a group,  for the purpose of acquiring,
holding, voting (except pursuant to a revocable proxy as described in clause (B)
of  subparagraph  (ii) of this  paragraph (c)) or disposing of any securities of
the Company.

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

         (e) "Close of business" on any given date shall mean 5:00 p.m., Pacific
time, on such date; PROVIDED,  HOWEVER,  that if such date is not a Business Day
it shall mean 5:00 p.m., Pacific time, on the next succeeding Business Day.

         (f) "Common  Shares,"  when used with  reference to the Company,  shall
mean the Common Stock of the Company or any other shares of capital stock of the
Company  into which the  Common  Stock of the  Company  may be  reclassified  or
changed.  "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 Person or, if such other Person is a subsidiary  of another
Person, the Person or Persons which ultimately  control(s) such  first-mentioned
Person  and  which  has  issued  and  outstanding  such  capital  stock,  equity
securities or equity interests.

         (g) "Distribution  Date" shall have the meaning as set forth in Section
3(a).

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

         (i) "Preferred Shares" shall mean shares of Series B Preferred Stock.

         (j)  "Stock  Acquisition  Date"  shall  mean the  first  date of public
announcement by the Company or an Acquiring  Person that an Acquiring Person has
become such.

         (k) A  "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 voting or equity interests is owned, directly or indirectly,  by such Person,
or which is otherwise controlled by such Person.

         (l)  "Triggering  Event"  shall mean a Section 11 Event (as  defined in
Section  11(a)(ii)  of this  Agreement)  or a Section  13 Event (as  defined  in
Section 13(a) of this Agreement).

         (m) "Voting power" shall mean the voting power of all securities of the
Company (or other entity at issue) then  outstanding  and generally  entitled to
vote in the election of directors of the Company (or such other entity).

         2.  APPOINTMENT OF RIGHTS AGENT. The Company hereby appoints the Rights
Agent  to act as  agent  for the  Company  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 Agents and any  Co-Rights  Agents
shall be as the Company shall determine.

         3.  ISSUE OF RIGHTS CERTIFICATES.

         (a) Until the  earlier  of (i) the Stock  Acquisition  Date or (ii) the
close of business on the tenth day (or such later date as may be  determined  by
action of the  Board)  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 any of its
subsidiaries  or any entity  organized,  appointed or established by the Company
holding Common Shares for or pursuant to the terms of any such plan) to commence
(which  intention to commence  remains  unwithdrawn or otherwise  uncanceled for
five (5)  days  after  such  announcement),  a  tender  or  exchange  offer  the
consummation of which would result in such Person  becoming an Acquiring  Person
(including  any such date which is on or after the Effective  Date) (the earlier
of such dates being herein referred to as the "Distribution


<PAGE>


Date"), (x) the Rights shall be evidenced by the certificates for Common Shares
registered in the names of the holders  thereof (which  certificates  for Common
Shares shall be deemed also to be  certificates  for Rights) and not by separate
certificates,  and (y)  the  Rights  (and  the  right  to  receive  certificates
therefor)  shall be  transferable  only in  connection  with the transfer of the
underlying Common Shares.  As soon as practicable  after the Distribution  Date,
the Rights Agent shall send by  first-class,  insured,  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, a certificate for Rights, in substantially the form of EXHIBIT A hereto
(a "Rights Certificate"), evidencing one Right for each Common Share (subject to
adjustment as provided elsewhere herein). As of and after the Distribution Date,
the Rights shall be evidenced solely by such Rights Certificates.

         Until the  Distribution  Date (or  earlier  redemption,  expiration  or
termination of the Rights),  the surrender for transfer of any  certificate  for
Common Shares shall also  constitute the transfer of the Rights  associated with
the Common Shares represented by such certificate.

         (b)  Certificates   issued  for  Common  Shares   (including,   without
limitation,  certificates  issued upon  transfer  or exchange of Common  Shares)
after  the  Effective  Date but  prior  to the  Distribution  Date  (or  earlier
redemption,  expiration or termination of the Rights) 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 an Amended and Restated Rights Agreement
         between Agouron  Pharmaceuticals,  Inc. (the "Company") and ChaseMellon
         Shareholder Services,  L.L.C. (the "Rights Agent") dated as of November
         10,  1998 (the  "Rights  Agreement"),  the  terms of which  are  hereby
         incorporated  herein by reference and a copy of which is on file at the
         principal offices of the Company. Under certain  circumstances,  as set
         forth in the Rights Agreement, such Rights may be redeemed, may expire,
         or may be  evidenced  by  separate  Certificates  and will no longer be
         evidenced by this  Certificate.  The Company will mail to the holder of
         this  certificate a copy of the Rights  Agreement  without charge after
         receipt of a written  request  therefor.  Under certain  circumstances,
         Rights  beneficially  owned by  Acquiring  Persons  (as  defined in the
         Rights  Agreement) or certain related Persons and any subsequent holder
         of such Rights may become null and void.

With respect to such  certificates  containing the foregoing  legend,  until the
Distribution  Date (or earlier  redemption,  expiration  or  termination  of the
Rights),  the Rights  associated  with the  Common  Shares  represented  by such
certificates  shall be evidenced by such  certificates  alone, and the surrender
for transfer of any of such  certificates  shall also constitute the transfer of
the Rights associated with the Common Shares represented by such certificates.

         4.  FORM OF RIGHTS CERTIFICATES.

         (a) The Rights  Certificates  (and the forms of  election  to  purchase
shares and of assignment and  certificates to be printed on the reverse thereof)
shall be  substantially  in the form set forth as  EXHIBIT A 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  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  interdealer
quotation  system on which the Rights may from time to time be listed or traded,
or to conform to usage.  Subject to the provisions of Section 11 and Section 23,
the Rights  Certificates  shall  entitle  the holders  thereof to purchase  such
number of one one-ten  thousandths  of a  Preferred  Share as shall be set forth
therein at the price per one one-ten  thousandth of a Preferred  Share set forth
therein (the "Purchase Price"),  but the number of such one one-ten  thousandths
of a Preferred  Share and the Purchase  Price shall be subject to  adjustment as
provided herein.

         (b) Any  Rights  Certificate  issued  pursuant  to  Section  3(a)  that
represents Rights  beneficially owned by an Acquiring Person or any Associate or
Affiliate  thereof  and any  Rights  Certificate  issued  at any  time  upon the
transfer of any Rights to such an Acquiring Person or any Associate or Affiliate
thereof or to any nominee of such Acquiring Person,  Associate or Affiliate, and
any Rights Certificate issued pursuant to Section 6 or Section 11 upon transfer,
exchange,  replacement or adjustment of any other Rights Certificate referred to
in this sentence, shall contain the following legend:


<PAGE>




         The Rights  represented  by this  Rights  Certificate  were issued to a
         Person who was an  Acquiring  Person or an Affiliate or an Associate of
         an Acquiring Person, as such terms are defined in the Rights Agreement.
         This Rights  Certificate and the Rights  represented  hereby may become
         void under the  circumstances  specified  in Section 7(e) of the Rights
         Agreement.

The  provisions of Section 7(e) shall be operative  whether or not the foregoing
legend is contained on any such Rights Certificate.

         5.   COUNTERSIGNATURE AND REGISTRATION.

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

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

         6. TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHTS CERTIFICATES;
MUTILATED, DESTROYED, LOST OR STOLEN RIGHTS CERTIFICATES.

         (a) Subject to the  provisions  of Sections  7(e),  7(f) and 15, at any
time after the close of business on the  Distribution  Date,  and at or prior to
the  close of  business  on the  Expiration  Date,  any  Rights  Certificate  or
Certificates  may be  transferred,  split up,  combined or exchanged for another
Rights  Certificate or Rights  Certificates,  entitling the registered holder to
purchase a like number of one-ten  thousandths  of a Preferred  Share (or, after
the  occurrence  of a Triggering  Event,  Common  Shares or other  securities or
property,  as the case may be) as the Rights Certificate or Rights  Certificates
surrendered  then  entitled  such  holder  (or  former  holder  in the case of a
transfer) to purchase.  Any registered  holder  desiring to transfer,  split up,
combine or exchange any Rights  Certificate  or Rights  Certificates  shall make
such request in writing  delivered to the Rights Agent,  and shall surrender the
Rights Certificate or Rights Certificates to be transferred,  split up, combined
or exchanged at the principal  office of the Rights Agent.  Thereupon the Rights
Agent shall  (subject  to Section  7(e))  countersign  and deliver to the Person
entitled thereto a Rights  Certificate or Rights  Certificates,  as the case may
be, as so  requested.  The Company may require  payment of a sum  sufficient  to
cover any tax or governmental  charge that may be imposed in connection with any
transfer, split up, combination or exchange of Rights Certificates.

         (b)  Subject to the  provisions  of  Sections  7(e),  7(f) and 15, upon
receipt by the Company and the Rights Agent of evidence reasonably  satisfactory
to them of the loss,  theft,  destruction or mutilation of a Rights  Certificate
and 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, and, in case of loss, theft or destruction,  of indemnity or
security  reasonably  satisfactory to them, and reimbursement to the Company and
the  Rights  Agent  of all  reasonable  expenses  incidental  thereto,  and upon
surrender  to the Rights Agent and  cancellation  of the Rights  Certificate  if
mutilated,  the Company  shall execute and deliver a new Rights  Certificate  of
like tenor to the Rights Agent for


<PAGE>


countersignature  and  delivery to the  registered  owner in lieu of the Rights
Certificate so lost, stolen, destroyed or mutilated.

         7.   EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE OF RIGHTS.

         (a) Subject to the provisions of Sections 7(e) and 7(f), the registered
holder of any Rights  Certificate  may  exercise  the Rights  evidenced  thereby
(except as otherwise  provided herein) in whole or in part at any time after the
Distribution  Date  upon  presentation  of  the  Rights  Certificate,  with  the
appropriate  form of  election to purchase  on the  reverse  side  thereof  duly
executed,  to the Rights  Agent at the  principal  office of the  Rights  Agent,
together with payment of the Purchase Price for each one one-ten thousandth of a
Preferred Share (or such other number,  securities or property,  as the case may
be) as to which the Rights are exercised, at or prior to the earliest of (i) the
close of business on November 21, 2006 (the "Final Expiration  Date"),  (ii) the
time at which the Rights are  redeemed  as  provided  in Section  24,  (iii) the
consummation of a transaction contemplated by Section 13(d), or (iv) the time at
which the Rights are exchanged as provided in Section 24(c) (such  earliest time
being herein referred to as the "Expiration Date").

         (b) The Purchase  Price with  respect to each Right shall  initially be
$250.00 for each one one-ten  thousandth of a share of Series B Preferred Stock,
subject to  adjustment  from time to time as  provided in Sections 11 and 13 and
payable in lawful  money of the United  States of  America  in  accordance  with
paragraph (c) below.

         (c) Upon  receipt  of a  Rights  Certificate  representing  exercisable
Rights,  with the  appropriate  form of  election  to  purchase  duly  executed,
accompanied  by payment of the Purchase  Price for  fractional  interests in the
Preferred Shares (or other securities or property) to be purchased and an amount
equal to any  applicable  transfer tax (as  determined  by the Rights  Agent) in
cash,  or by certified  check or bank draft payable to the order of the Company,
the Rights Agent shall,  subject to Section  21(k),  thereupon  promptly  (i)(A)
requisition  from any transfer agent of the Preferred Shares to be purchased (or
make available,  if the Rights Agent is the transfer agent) certificates for the
number of  fractional  interests in Preferred  Shares to be  purchased,  and the
Company hereby irrevocably authorizes its transfer agent to comply with all such
requests,  or (B) if the Company, in its sole discretion,  shall have elected to
deposit the fractional  interests in Preferred  Shares issuable upon exercise of
the Rights  hereunder into a depositary,  requisition  from the depositary agent
depositary  receipts  representing  such number of one one-ten  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  shall direct the  depositary
agent to comply with such request,  (ii) when appropriate,  requisition from the
Company the amount of cash, if any, to be paid in lieu of issuance of fractional
shares in  accordance  with Section 15,  (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 Rights  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 Rights Certificate.  In the event that the Company
is obligated to issue other securities of the Company,  and/or  distribute other
property  pursuant to Section  11(a),  the Company  shall make all  arrangements
necessary  so that such other  securities  and/or  property  are  available  for
distribution by the Rights Agent, if and when appropriate.

         (d) In the case of an  exercise  of the Rights by a holder  pursuant to
Section 11(a)(ii),  the Rights Agent shall return such Rights Certificate to the
registered  holder thereof after  imprinting,  stamping or otherwise  indicating
thereon that the rights represented by such Rights Certificate no longer include
the rights provided by Section 11(a)(ii);  PROVIDED,  HOWEVER, that if less than
all the Rights  represented by such Rights  Certificate  were so exercised,  the
Rights  Agent  shall  indicate  on the Rights  Certificate  the number of Rights
represented  thereby  which  continue to include the rights  provided by Section
11(a)(ii).  In case  the  registered  holder  of any  Rights  Certificate  shall
exercise  (except  pursuant  to  Section  11(a)(ii))  less  than all the  Rights
evidenced thereby, a new Rights Certificate  evidencing Rights equivalent to the
Rights remaining  unexercised  shall be issued by the Rights Agent and delivered
to the  registered  holder  of such  Rights  Certificate  or to such  registered
holder's duly authorized assigns, subject to the provisions of Section 15.

         (e)  Notwithstanding  anything in this  Agreement to the  contrary,  if
there occurs any Triggering  Event, then any Rights that are or were on or after
the  Distribution  Date  beneficially  owned by (i) an  Acquiring  Person  or an
Associate  or  Affiliate  of an  Acquiring  Person,  (ii) a  transferee  from an
Acquiring  Person  (or of  any  such  Associate  or  Affiliate)  who  becomes  a
transferee   after  the  Acquiring  Person  becomes  such  (and  any  subsequent
transferees of such


<PAGE>


transferee), or (iii) a transferee of an Acquiring Person (or 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 determines is
part of a plan,  arrangement or understanding  which has as a primary purpose or
effect the  avoidance of this Section  7(e),  shall become null and void without
any further  action,  and any holder  (including any subsequent  holder) of such
Rights shall  thereupon have no rights  whatsoever  with respect to such Rights,
whether  under any provision of this  Agreement or otherwise.  The Company shall
use all  reasonable  efforts to insure that the  provisions of this Section 7(e)
are  complied  with,  but  shall  have  no  liability  to any  holder  of  Right
Certificates or any other Person as a result of its failure or inability to make
any  determinations  with  respect  to an  Acquiring  Person or its  Affiliates,
Associates or transferees.

         (f) Notwithstanding anything in this Agreement to the contrary, neither
the Rights Agent nor the Company shall be obligated to undertake any action with
respect to a registered holder upon the occurrence of any purported  exercise as
set forth in this Section 7 unless the certificate  contained in the appropriate
form of  election  to  purchase  set  forth on the  reverse  side of the  Rights
Certificate surrendered for such exercise shall have been properly completed and
duly executed 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.

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

         9.  RESERVATION AND AVAILABILITY OF PREFERRED SHARES.

         (a) The Company covenants and agrees that it shall cause to be reserved
and kept available,  out of its authorized and unissued  Preferred  Shares (and,
following  the  occurrence  of a Triggering  Event,  Common  Shares and/or other
securities),  the number of Preferred Shares (and, following the occurrence of a
Triggering Event, Common Shares and/or other securities) that will be sufficient
(in accordance with the terms of this Agreement,  including Section  11(a)(iii))
to permit the exercise in full of all outstanding Rights.

         (b) So long as the Preferred Shares (and, following the occurrence of a
Triggering  Event,  Common  Shares  and/or other  securities)  issuable upon the
exercise  of the Rights may be listed on any  national  securities  exchange  or
quoted on any national  quotation system, the Company shall use its best efforts
to cause, from and after such time as the Rights become exercisable,  all shares
(or other  securities)  reserved for such issuance to be listed on such exchange
or quoted on such system upon official notice of issuance upon such exercise.

         (c) If then required by applicable  law, the Company shall use its best
efforts to (i) file,  as soon as  practicable  following the earliest date after
the  occurrence  of a  Triggering  Event as to  which  the  consideration  to be
delivered  by the  Company  upon  exercise  of the  Rights  has been  determined
pursuant  to this  Agreement,  or as soon as is required  by law  following  the
Distribution  Date,  as the case  may be, a  registration  statement  under  the
Securities  Act of 1933, as amended (the "Act"),  with respect to the securities
purchasable upon exercise of the Rights on an appropriate  form, (ii) cause such
registration  statement to become  effective as soon as  practicable  after such
filing and (iii) cause such  registration  statement to remain effective (with a
prospectus at all times meeting the  requirements  of the Act) until the earlier
of (A) the  date as of which  the  Rights  are no  longer  exercisable  for such
securities,  (B) the  Expiration  Date or (C) the date the  Company  receives an
opinion  of  counsel to the effect  that the  maintenance  of such  registration
statement in effect is no longer necessary.  If then required by applicable law,
the  Company  will  also  take  such  action  as may be  appropriate  under  the
securities or "blue sky" laws of the various states. The Company may temporarily
suspend,  for a period of time not to exceed ninety (90) days after the date set
forth in clause (i) of this


<PAGE>


Section  9(c),  the  exercisability  of the Rights in order to prepare and file
such registration  statement or to comply with such blue sky laws. Upon any such
suspension,  the Company  shall  issue a public  announcement  stating  that the
exercisability of the Rights has been temporarily suspended. Notwithstanding any
provision of this Agreement to the contrary, the Rights shall not be exercisable
in any  jurisdiction  unless the requisite  qualification  in such  jurisdiction
shall have been obtained.

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

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

         10.  PREFERRED  SHARES  RECORD  DATE.  Each  Person  in whose  name any
certificate  for  Preferred  Shares  (or other  securities)  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 other securities) represented thereby on, and
such  certificate  shall be dated,  the date upon which the  Rights  Certificate
evidencing such Rights was duly presented and payment of the Purchase Price (and
any applicable transfer taxes) was made; PROVIDED,  HOWEVER, that if the date of
such  presentation  and  payment is a date upon which the  Preferred  Shares (or
other securities) transfer books of the Company are closed, such Person shall be
deemed to have become the record holder of such shares on, and such  certificate
shall be dated,  the next succeeding  Business Day on which the Preferred Shares
(or other  securities)  transfer  books of the  Company  are open.  Prior to the
exercise of the Rights evidenced thereby, the holder of a Rights Certificate, as
such,  shall not be entitled to any rights of a shareholder  of the Company with
respect to shares for which the Rights shall be exercisable,  including, without
limitation, the right to vote, to receive dividends or other distributions or to
exercise any preemptive  rights, and shall not be entitled to receive any notice
of any proceedings of the Company, except as provided herein.

         11.  ADJUSTMENT OF PURCHASE PRICE,  NUMBER AND KIND OF SHARES OR NUMBER
OF RIGHTS. The Purchase Price, the number of Preferred Shares (or number or kind
of other shares of capital stock,  as the case may be) covered by each Right and
the number of Rights  outstanding are subject to adjustment from time to time as
provided in this Section 11.

         (a) (i) In the event the Company  shall at any time after the Effective
Date (A) declare or pay any dividend on the outstanding 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  outstanding
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(a) and in Section
7(e), the Purchase Price relating to the Preferred  Shares 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,  as the  case  may be,  issuable  on  such  date,  shall  be
proportionately  adjusted so that the holder of any Right  exercised  after such
time shall be entitled to receive the  aggregate  number of Preferred  Shares or
other  securities,  as the case may be, which,  if such Right had been exercised
immediately  prior to such date and at a time when the Preferred Shares transfer
books of the Company were open,  such holder 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  this  Section  11(a)(i)  and  Section  11(a)(ii),   the
adjustment  provided for in this Section  11(a)(i)  shall be in addition to, and
shall be made prior to, any adjustment required pursuant to Section 11(a)(ii).


<PAGE>




         (ii)  Subject  to  Section  24(c),  in the event any  Person,  alone or
together with its Affiliates and Associates, shall become an Acquiring Person (a
"Section  11 Event")  (except  pursuant  to a tender or  exchange  offer for all
outstanding  Common  Shares  at a price  and on terms  determined  by at least a
majority of the members of the Board who are not officers of the Company and are
not Acquiring  Persons or  Affiliates  or  Associates  thereof to be in the best
interests  of the  Company  and its  shareholders  (other  than the Person or an
Affiliate  or  Associate  thereof on whose  behalf  the offer is being  made) (a
"Permitted  Offer")),  then,  promptly  following the first occurrence of such a
Section 11 Event, proper provision shall be made so that each holder of a Right,
except as provided in Section 7(e), shall, for a period of sixty (60) days after
the later of the  occurrence of any such Section 11 Event or the effective  date
of an appropriate  registration statement pursuant to Section 9, have a right to
receive,  upon exercise thereof at the then current Purchase Price in accordance
with the terms of this Agreement,  in lieu of fractional  interests in Preferred
Shares and  subject to the  provisions  of Section  11(a)(iii),  such  number of
Common  Shares as shall equal the result  obtained by (x)  multiplying  the then
current  Purchase Price by the number of one one-ten  thousandths of a Preferred
Share  for which a Right was  exercisable  immediately  prior to the date of the
occurrence  of the Section 11 Event at issue,  and dividing such products by (y)
fifty percent (50%) of the then current per share market price of a Common Share
(determined  pursuant  to Section  11(d)) on the date of the  occurrence  of the
Section 11 Event at issue (such number of shares being referred to herein as the
"Adjustment  Shares");  PROVIDED,  HOWEVER,  that if the transaction  that would
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(a)(ii);  and PROVIDED,
FURTHER,  that such sixty (60) day period  shall not be deemed to run during any
period in which the  exercise  of any of the  Rights or the  fulfillment  by the
Company or the Rights  Agent of its or their  obligations  under this  Agreement
shall be enjoined  or  otherwise  prohibited  in full or in part by any court or
other governmental agency or body.

         (iii) In lieu of issuing  Adjustment  Shares in accordance with Section
11(a)(ii),  the  Company  may,  if the  Board  determines  that  such  action is
necessary or appropriate and not contrary to the interests of holders of Rights,
elect to (and, in the event that the Board has not exercised the exchange  right
contained in Section 24(c) and there are not sufficient  authorized but unissued
Common  Shares to permit the exercise in full of the Rights in  accordance  with
the foregoing  subparagraph (ii), the Company shall) take all such action as may
be necessary to authorize,  issue or pay, upon the exercise of the Rights,  cash
(including  by way of a  reduction  of the  Purchase  Price),  property,  Common
Shares,  other securities (whether equity or debt securities of the Company, any
subsidiary of the Company,  or otherwise) or any  combination  thereof having an
aggregate  value equal to the value of the  Adjustment  Shares  which  otherwise
would have been issuable  pursuant to Section  11(a)(ii),  which aggregate value
shall be determined by a nationally  recognized investment banking firm selected
by the  Board.  For  purposes  of  the  preceding  sentence,  the  value  of the
Adjustment Shares shall be determined pursuant to Section 11(d) and the value of
any fractional interests in Preferred Shares or preference stock which the Board
determines  to be a "common share  equivalent"  shall be deemed to have the same
value as the Adjustment  Shares. Any such election by the Board must be made and
publicly  announced  within  sixty  (60)  days  following  the date on which the
Section 11 Event at issue shall have occurred.  Following the occurrence of such
Section 11 Event, the Board may suspend the  exercisability  of the Rights for a
period of up to sixty  (60) days  following  the date on which  such  Section 11
Event  shall  have  occurred  to the  extent  that the Board has not  determined
whether to exercise its rights of election under this Section 11(a)(iii). If the
Board shall determine in good faith that it is likely that sufficient additional
Common  Shares could be  authorized  for issuance  upon  exercise in full of the
Rights,  the sixty (60) day period set forth above may be extended to the extent
necessary,  but not more than ninety (90) days  following the  occurrence of the
Section  11 Event at  issue,  in order  that the  Company  may seek  shareholder
approval for the  authorization of such additional  shares.  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.

         (b) If 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  forty-five (45) calendar days after such record date) to
subscribe  for or purchase  Preferred  Shares (or shares having the same or more
favorable  rights,  privileges and preferences as Preferred Shares  ("equivalent
preferred   shares"))  or  securities   convertible  into  Preferred  Shares  or
equivalent  preferred  shares at a price per Preferred  Share or per  equivalent
preferred  share  (or  having  a  conversion  price  per  share,  if a  security
convertible into Preferred Shares or equivalent  preferred shares) less than the
then current market price (as defined in Section  11(d)) per Preferred  Share 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


<PAGE>


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  shares so to be offered  (and/or  the  aggregate  initial
conversion price of the convertible  securities so to be offered) would purchase
at such current market price and the denominator of which shall be the number of
Preferred  Shares  outstanding on such record date plus the number of additional
Preferred  Shares  and/or  equivalent  preferred  shares  so 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  reasonably  and with good
faith to the  holders  of  Rights by the  Board,  whose  determination  shall be
described in a statement filed with the Rights Agent and shall be binding on the
Rights Agent and conclusive for all purposes.  Preferred Shares owned by or held
for the account of the Company shall not be deemed  outstanding  for the purpose
of any such  computation.  Such adjustment shall be made  successively  whenever
such a record date is fixed;  and in the event that such rights or warrants  are
not so issued,  the Purchase  Price shall be adjusted to be the  Purchase  Price
which would then be in effect if such record date had not been fixed.

(c) If the Company shall fix a record date for the making of a  distribution  to
all  holders  of  Preferred  Shares  (including  any such  distribution  made in
connection with a consolidation or merger in which the Company is the continuing
corporation) of evidences of indebtedness,  cash (other than a regular quarterly
dividend out of the earnings or retained earnings of the Company), assets (other
than a dividend payable in Preferred Shares,  but including any dividend payable
in stock  other  than  Preferred  Shares)  or  subscription  rights or  warrants
(excluding  those  referred to in Section  11(b)),  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 then current market price (as defined in Section
11(d)) per Preferred  Share on such record date,  less the fair market value (as
determined reasonably and with good faith to the holders of Rights by the Board,
whose  determination  shall be  described  in a statement  filed with the Rights
Agent and shall be binding on the Rights Agent and  conclusive for all purposes)
of the  portion  of the  cash,  assets or  evidences  of  indebtedness  so to be
distributed or of such subscription rights or warrants  distributable in respect
of one Preferred  Share and the  denominator  of which shall be the then current
market price (as defined in Section 11(d)) per Preferred Share. 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 be in effect if such record date
had not been fixed.

         (d) (i) For the  purpose of any  computation  hereunder,  other than as
provided in Section  11(a)(iii),  the  "current  market  price" per share of the
Common Shares on any date shall be deemed to be the average of the daily closing
prices per share of such Common Shares 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 Common Shares is determined  during a period  following the  announcement by
the issuer of such  Common  Shares of (A) a  dividend  or  distribution  on such
Common Shares payable in such Common Shares or securities  convertible into such
Common Shares or (B) any subdivision,  combination or  reclassification  of such
Common Shares, 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  market  price"  shall  be  properly  adjusted  to  take  into  account
ex-dividend  trading.  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 Common Shares 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 Common  Shares are listed or  admitted to trading or, if the Common
Shares  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 the
National  Association of Securities  Dealers,  Inc.  Automated  Quotation System
("Nasdaq")  or such other system then in use, or, if on any such date the Common
Shares 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 Common Shares  selected by the Board. If on any such date no market maker is
making a market in the Common Shares at issue,  the fair value of such shares on
such date as  determined  reasonably  and with good faith by the Board  shall be
used and shall be binding on the Rights Agent and  conclusive  for all purposes.
The  term  "Trading  Day"  shall  mean a day on  which  the  principal  national
securities  exchange on which the Common  Shares at issue are listed or admitted
to trading is open for the  transaction  of business or, if the Common Shares at
issue are not listed or


<PAGE>


admitted to trading on any national securities exchange, a Business Day. If the
Common  Shares  at issue  are not  publicly  held or not so  listed  or  traded,
"current market price" per share shall mean the fair value per share  determined
reasonably  and with good faith to the  holders  of Rights by the  Board,  whose
determination  shall be described in a statement filed with the Rights Agent and
shall be binding on the Rights Agent and conclusive for all purposes.

         (ii) For the purpose of any computation hereunder,  the "current market
price" per share (or one one-ten  thousandth of a share) of the Preferred Shares
shall be  determined  in the same manner as set forth above for Common Shares in
Section 11(d)(i) (other than the last sentence  thereof).  If the current market
price per share (or one one-ten  thousandth of a share) of the Preferred  Shares
cannot be determined in the manner provided above or if the Preferred  Shares at
issue are not publicly held or listed or traded in a manner described in Section
11(d)(i), the "current market price" per share of Series B Preferred Stock shall
be  conclusively  deemed to be an amount  equal to 10,000 (as such number may be
appropriately  adjusted for such events as stock  splits,  stock  dividends  and
recapitalization  with  respect  to the Series B  Preferred  Stock or the Common
Stock, as the case may be, occurring after the Effective Date) multiplied by the
current  market  price per share of the  Common  Stock and the  "current  market
price" per one one-ten  thousandth of a share of Series B Preferred  Stock shall
be  conclusively  deemed to be an amount  equal to the current  market price per
share of the  Common  Stock  (and in each case as  appropriately  adjusted).  If
neither  the Common  Shares nor the  Preferred  Shares are  publicly  held or so
listed or traded, "current market price" per share shall mean the fair value per
share as determined  in good faith by the Board,  whose  determination  shall be
described in a statement filed with the Rights Agent and shall be conclusive for
all purposes.

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

         (f) If as a result of any  provision  of this Section 11, 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 Preferred Shares (and the Purchase
Price) contained in this Section 11, and the provisions of Sections 7, 9, 10, 13
and 15 with  respect to  Preferred  Shares shall apply on like terms to any such
other shares.

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

         (h) Unless the Company shall have exercised its election as provided in
Section  11(i),  upon each  adjustment of the Purchase  Price as a result of the
calculations made in Section 11(b) and (c), 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 one-ten thousandths
of a Preferred Share (calculated to the nearest one-ten  millionth)  obtained by
(i) multiplying  (x) the number of one one-ten  thousandths 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.

         (i) 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  one-ten  thousandths  of a  Preferred  Share
purchasable upon the exercise of a Right.  Each of the Rights  outstanding after
the  adjustment in the number of Rights shall be  exercisable  for the number of
one one-ten  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 one  millionth)  obtained by dividing  the  Purchase
Price in


<PAGE>


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  Rights
Certificates  have been  issued,  shall be at least ten (10) days later than the
date of the public  announcement.  If Rights Certificates have been issued, upon
each  adjustment  of the number of Rights  pursuant to this Section  11(i),  the
Company shall, as promptly as practicable, cause to be distributed to holders of
record  of  Rights   Certificates  on  such  record  date  Rights   Certificates
evidencing,  subject to Section 15, the additional  Rights to which such holders
shall be  entitled  as a result of such  adjustment,  or,  at the  option of the
Company, shall cause to be distributed to such holders of record in substitution
and  replacement for the Rights  Certificates  held by such holders prior to the
date of adjustment,  and upon surrender thereof, if required by the Company, new
Rights  Certificates  evidencing  all the Rights to which such holders  shall be
entitled after such adjustment.  Rights  Certificates so to be distributed shall
be issued, executed and countersigned in the manner provided for herein (and may
bear, at the option of the Company,  the adjusted  Purchase  Price) and shall be
registered in the names of the holders of record of Rights  Certificates  on the
record date specified in the public announcement.

         (j)  Irrespective  of any adjustment or change in the Purchase Price or
the number of Preferred  Shares  issuable  upon the exercise of the Rights,  the
Rights  Certificates  theretofore and thereafter  issued may continue to express
the  Purchase  Price and the number of one  one-ten  thousandths  of a Preferred
Share which were expressed in the initial Rights Certificates issued hereunder.

         (k) Before  taking any action that would cause an  adjustment  reducing
the Purchase  Price below the then par value,  if any, of the Preferred  Shares,
Common  Shares  or  other  securities  issuable  upon  exercise  of  the  Rights
(aggregating,  for this purpose, an appropriate amount of the Purchase Price for
fractional shares to compare such aggregated amount to the par value for a whole
share), 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,  Common  Shares or other
securities at such adjusted  Purchase Price. If upon any exercise of the Rights,
a holder  is to  receive  a  combination  of  Common  Shares  and  common  share
equivalents,  or Preferred Shares and equivalent  preferred shares, a portion of
the consideration paid upon such exercise, equal to at least the then par value,
if any, of a Common  Share or a Preferred  Share,  as the case may be,  shall be
allocated as the payment for each Common Share or Preferred  Share,  as the case
may be, so received.

         (l) In any  case  in  which  this  Section  11  shall  require  that an
adjustment  in the  Purchase  Price be made  effective as of a record date for a
specified  event,  the Company may elect to defer until the  occurrence  of such
event the  issuing to the holder of any Right  exercised  after such record date
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 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.

     (m)  Anything  to the  contrary  in this  Section 11  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 Preferred  Shares,  any issuance
wholly for cash of any Preferred  Shares at less than the current  market price,
any issuance  wholly for cash of Preferred  Shares or securities  which by their
terms are  convertible  into or  exchangeable  for Preferred  Shares,  any stock
dividends or any issuance of rights, options or warrants referred to hereinabove
in this Section 11, hereafter made by the Company to holders of Preferred Shares
shall not be taxable to such shareholders.

         (n) Anything in this Agreement to the contrary notwithstanding,  in the
event that the Company shall at any time after the  Effective  Date and prior to
the  Distribution  Date (i)  declare or pay any  dividend  on any Common  Shares
payable in Common Shares,  (ii) subdivide the outstanding  Common Shares,  (iii)
combine the  outstanding  Common Shares into a smaller  number of shares or (iv)
issue any shares of its capital stock in a  reclassification  of the outstanding
Common  Shares,  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 such share following any such event shall equal the result
obtained by multiplying the


<PAGE>


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.

         (o) The exercise of Rights under Section 11(a)(ii) shall only result in
the loss of rights under Section  11(a)(ii) to the extent so exercised and shall
not otherwise affect the rights  represented by the Rights under this Agreement,
including the rights represented by Section 13.

         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 Preferred  Shares and
the  Common  Shares  a copy of such  certificate  and (c)  mail a brief  summary
thereof to each holder of a Rights  Certificate  in accordance  with Section 26.
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.
Notwithstanding the foregoing  provisions of this Section 12, the failure of the
Company  to make such  certification  or give such  notice  shall not affect the
validity of or the force or effect of the requirement for such adjustment.

         13.  CONSOLIDATION,  MERGER OR SALE OR  TRANSFER  OF ASSETS OR  EARNING
POWER.

         (a) In the event that,  following the Stock Acquisition Date,  directly
or indirectly,  (x) the Company shall  consolidate with, or merge with and into,
any other Person,  (y) 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  (other  than,  in the case of  either  transaction
described in (x) or (y), a merger or consolidation  which would result in all of
the voting  power  represented  by the  securities  of the  Company  outstanding
immediately   prior  thereto   continuing  to  represent  (either  by  remaining
outstanding or by being converted into  securities of the surviving  entity) all
of the  voting  power  represented  by the  securities  of the  Company  or such
surviving entity outstanding  immediately after such merger or consolidation and
the holders of such  securities not having changed as a result of such merger or
consolidation),  or (z) the Company shall sell,  mortgage or otherwise  transfer
(or one or more of its subsidiaries shall sell, mortgage or otherwise transfer),
in one or more transactions, assets or earning power aggregating more than fifty
percent (50%) of the assets or earning power of the Company and its subsidiaries
(taken as a whole) to any  other  Person  (any of the  events  described  in the
foregoing  clauses  (x),  (y) or (z) being  herein  referred to as a "Section 13
Event"), then, and in each such case, proper provision shall be made so that (i)
following the Distribution  Date, each holder of a Right (other than as provided
in Section 7(e)) shall have the right to receive,  upon the exercise  thereof at
the then current  Purchase Price in accordance with the terms of this Agreement,
such  number  of  freely  tradable  Common  Shares  of the  Principal  Party (as
hereinafter defined),  free and clear of liens, rights of call or first refusal,
encumbrances or other adverse  claims,  as shall be equal to the result obtained
by (x) multiplying the then current  Purchase Price by the number of one one-ten
thousandths of a Preferred Share for which a Right is then exercisable  (without
taking  into  account  any  adjustment   previously  made  pursuant  to  Section
11(a)(ii))  and (y) dividing  that product by fifty percent (50%) of the current
market price per share of the Common Shares of such Principal Party  (determined
pursuant to Section 11(d)) on the date of  consummation  of such  consolidation,
merger,  sale or transfer;  (ii) such Principal Party 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
Agreement;  (iii) the term "Company" shall thereafter be deemed to refer to such
Principal Party, it being  specifically  intended that the provisions of Section
11 shall apply to such Principal Party; and (iv) such Principal Party 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.

         (b)      "Principal Party" shall mean:

                  (i) in the case of any transaction described in clauses (x) or
         (y) of the first  sentence  of this  Section 13, the Person that is the
         issuer of any securities into which Common Shares of the


<PAGE>


 Company are converted in such merger or consolidation, and if no securities are
         so  issued,  the  Person  that is the  other  party  to the  merger  or
         consolidation  (including,  if  applicable,  the Company,  if it is the
         surviving corporation); and

                  (ii) in the case of any transaction described in clause (z) of
         the first  sentence  in this  Section  13, the Person that is the party
         receiving  the  greatest   portion  of  the  assets  or  earning  power
         transferred pursuant to such transaction or transactions;

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

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

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

                  (ii) use its best  efforts  to (x)  qualify  or  register  the
         Rights and the securities purchasable upon exercise of the Rights under
         the  blue  sky  laws  of  such  jurisdictions  as may be  necessary  or
         appropriate  and (y) cause the  Rights and the  securities  purchasable
         upon  exercise  of the Rights to be listed on any  national  securities
         exchange or national  quotation system upon which its Common Shares are
         listed, traded or quoted; and

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

The provisions of this Section 13 shall similarly apply to successive mergers or
consolidations  or sales or other  transfers.  The rights  under this Section 13
shall be in  addition  to the rights to exercise  Rights and  adjustments  under
Section 11(a)(ii) and shall survive any exercise thereunder.

         (d) Notwithstanding anything in this Agreement to the contrary, Section
13 shall not be applicable to a transaction  described in clauses (x) and (y) of
Section 13(a) if (i) such  transaction is  consummated  with a Person or Persons
who acquired  Common Shares of the Company  pursuant to a Permitted  Offer (or a
wholly  owned  subsidiary  of any such  Person or  Persons),  (ii) the price per
Common Share offered in such  transaction  is not less than the price per Common
Share paid to all holders of Common Shares whose shares were purchased  pursuant
to such Permitted


<PAGE>


Offer  and (iii)  the form of  consideration  being  offered  to the  remaining
holders of Common Shares pursuant to such transaction is the same as the form of
consideration  paid to all holders of Common Shares  pursuant to such  Permitted
Offer. Upon consummation of any such transaction contemplated by this subsection
(d), all Rights hereunder shall expire.

         14.      ADDITIONAL COVENANTS.

         (a) The Company  covenants and agrees that after the Stock  Acquisition
Date it shall not (i)  consolidate  with, (ii) merge with or into, or (iii) sell
or transfer to any other Person, in one or more transactions,  assets or earning
power  aggregating  more than fifty percent (50%) of the assets or earning power
of the Company and its subsidiaries taken as a whole, if at the time of or after
such consolidation,  merger or sale there are any charter or bylaw provisions or
any rights,  warrants or other instruments outstanding or any other action taken
which would diminish or otherwise eliminate the benefits intended to be afforded
by the Rights. The Company shall not consummate any such  consolidation,  merger
or sale  unless  prior  thereto the  Company  and such other  Person  shall have
executed and delivered to the Rights Agent a supplemental  agreement  evidencing
compliance with this subsection.

         (b) The Company  covenants and agrees that, after the Stock Acquisition
Date,  it will not,  except as  permitted  by  Section  24,  take any action the
purpose or effect of which is to diminish or  otherwise  eliminate  the benefits
intended to be afforded by the Rights.

         15.      FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

         (a) The Company  shall not be required  to issue  fractions  of Rights,
except  prior to the  Distribution  Date as  provided  in Section  11(n),  or to
distribute Rights Certificates which evidence fractional Rights. In lieu of such
fractional  Rights,  there shall be paid to the registered holders of the Rights
Certificates  with regard to which such  fractional  Rights  would  otherwise be
issuable,  an amount in cash equal to the same  fraction of the  current  market
value of a whole  Right.  For the purposes of this  Section  15(a),  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 of the Rights for any day shall
be the last sale price, 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. 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
reasonably  and with good faith to the  holders of Rights by the Board  shall be
used and shall be binding on the Rights Agent and conclusive for all purposes.

         (b) The Company  shall not be required to issue  fractions of Preferred
Shares  (other  than  fractions  which are  integral  multiples  of one  one-ten
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 one-ten  thousandth of a Preferred  Share).
Fractions of Preferred Shares in integral multiples of one one-ten 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 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
fractional   interests  in  Preferred  Shares  represented  by  such  depositary
receipts. In lieu of fractional Preferred Shares that are not integral multiples
of one  one-ten  thousandth  of a  Preferred  Share,  the Company may pay to the
registered holders of Rights  Certificates at the time such Rights are exercised
as herein  provided an amount in cash equal to the same  fraction of the current
market  price of one  one-ten  thousandth  of a Preferred  Share (as  determined
pursuant to Section 11(d) for the Trading Day  immediately  prior to the date of
such exercise).

         (c) Following the occurrence of a Triggering  Event,  the Company shall
not be required to issue  fractions  of Common  Shares or units of common  share
equivalents  or other  securities  upon  exercise of the Rights or to distribute
certificates  which evidence  fractional shares of such common share equivalents
or other securities.  In lieu of fractional shares or units of such common share
equivalents or other securities,  the Company may pay to the registered  holders
of Rights  Certificates at the time such Rights are exercised as herein provided
an amount in cash equal to the same  fraction of the current  market  value of a
share or unit of such common share equivalent or other securities.  For purposes
of this  Section  15(c),  the current  market value shall be  determined  in the
manner set forth in Section 11(d) for
<PAGE>

the Trading Day  immediately  prior to the date of such  exercise and, if a
common share  equivalent is not traded,  each such common share equivalent shall
have the value of one one-ten  thousandth  of a Preferred  Share (as  determined
pursuant to Section 11(d) for the Trading Day  immediately  prior to the date of
exercise).

         (d) Except as  otherwise  expressly  provided  herein,  the holder of a
Right by the  acceptance of the Rights  expressly  waives such holder's right to
receive any fractional  Rights or any fractional shares (other than, in the case
of  Preferred  Shares,  fractions  which are  integral  multiples of one one-ten
thousandth of a Preferred Share) upon exercise of a Right.

         16.  RIGHTS  OF  ACTION.  All  rights  of  action  in  respect  of this
Agreement,  except those rights of action vested in the Rights Agent pursuant to
Section  21,  are  vested in the  respective  registered  holders  of the Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares);  and any registered holder of any Rights  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 Rights  Certificate (or, prior to the
Distribution  Date, of the Common Shares),  may, in such holder's own behalf and
for such holder's own benefit, enforce, and may institute and maintain any suit,
action or proceeding against the Company to enforce, or otherwise act in respect
of,  such  holder's  right to  exercise  the  Rights  evidenced  by such  Rights
Certificate  in the  manner  provided  in such  Rights  Certificate  and in this
Agreement.  Without  limiting the  foregoing  or any  remedies  available to the
holders of Rights,  it is specifically  acknowledged  that the holders of Rights
would not have an adequate  remedy at law for any breach of this  Agreement  and
shall be entitled to  specific  performance  of the  obligations  hereunder  and
injunctive  relief  against actual or threatened  violations of the  obligations
hereunder of any Person  subject to this  Agreement.  Holders of Rights shall be
entitled to recover the  reasonable  costs and  expenses,  including  attorneys'
fees,  incurred  by  them  in any  action  to  enforce  the  provisions  of this
Agreement.

         17.  AGREEMENT OF RIGHTS HOLDERS.  Every holder of a Right by accepting
the same  consents  and agrees with the  Company  and the Rights  Agent and with
every other holder of a Right that:

         (a)      prior to the  Distribution  Date,  the Rights will be  
transferable  only in  connection  with the transfer of Common Shares;

         (b)  after  the   Distribution   Date,  the  Rights   Certificates  are
transferable  only on the registry  books of the Rights Agent if  surrendered at
the principal  office of the Rights Agent,  duly  endorsed or  accompanied  by a
proper instrument of transfer;

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

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

         18. RIGHTS CERTIFICATE  HOLDER NOT DEEMED A SHAREHOLDER.  No holder, as
such, of any Rights  Certificate shall be entitled to vote, receive dividends or
be deemed for any purpose the holder of the Preferred  Shares,  Common Shares or
any other  securities  of the  Company  which may at any time be  issuable  upon
exercise of the Rights represented  thereby, nor shall anything contained herein
or in any  Rights  Certificate  be  construed  to confer  upon the holder of any
Rights  Certificate,  as such, any of the rights of a shareholder of the Company
or any right to vote for the election of directors or upon any matter  submitted
to shareholders at any meeting  thereof,  or to give or withhold  consent to any
corporate  action,  or to receive notice of meetings or other actions  affecting
shareholders (except as


<PAGE>


provided in Section 25), or to receive  dividends or  subscription  rights,  or
otherwise,  until the Right or Rights evidenced by such Rights Certificate shall
have been exercised in accordance with the provisions thereof.

         19.  CONCERNING  THE RIGHTS  AGENT.  The  Company  agrees to pay to the
Rights Agent reasonable  compensation for all services  rendered by it hereunder
and, from time to time, on demand of the Rights Agent,  its reasonable  expenses
and  counsel  fees and  disbursements  and other  disbursements  incurred in the
administration  and execution of this Agreement and the exercise and performance
of its duties  hereunder.  The Company also agrees to indemnify the Rights Agent
for, and to hold it harmless against, any loss, liability, 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  Agreement,  including  the  costs  and
expenses of defending against any claim of liability arising therefrom, directly
or indirectly.

         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  Agreement in reliance  upon any Rights  Certificate  or
certificate for Common Shares or for other securities of the Company, instrument
of assignment or transfer, power of attorney,  endorsement,  affidavit,  letter,
notice, direction,  consent,  certificate,  statement or other paper or document
believed by it to be genuine and to be signed,  executed and,  where  necessary,
verified or acknowledged, by the proper Person or Persons.

         20.  MERGER OR  CONSOLIDATION  OR CHANGE OF NAME OF RIGHTS  AGENT.  Any
corporation or other entity into which the Rights Agent or any successor  Rights
Agent may be merged or with which it may be consolidated,  or any corporation or
other  entity  resulting  from any merger or  consolidation  to which the Rights
Agent or any  successor  Rights Agent shall be a party,  or any  corporation  or
other entity succeeding to the corporate trust or shareholder  services business
of the Rights Agent or any successor Rights Agent, shall be the successor to the
Rights Agent under this  Agreement  without the execution or filing of any paper
or any further act on the part of any of the parties hereto,  provided that such
corporation  or other entity would be eligible  for  appointment  as a successor
Rights  Agent  under  the  provisions  of  Section  22. In case at the time such
successor  Rights Agent shall succeed to the agency  created by this  Agreement,
any of the Rights  Certificates shall have been countersigned but not delivered,
any  such  successor  Rights  Agent  may  adopt  the   countersignature  of  the
predecessor Rights Agent and deliver such Rights  Certificates so countersigned;
and in case at that  time any of the  Rights  Certificates  shall  not have been
countersigned,   any  successor   Rights  Agent  may  countersign   such  Rights
Certificates  either  in the  name  of the  predecessor  or in the  name  of the
successor  Rights Agent;  and in all such cases such Rights  Certificates  shall
have the full force provided in the Rights Certificates in this Agreement.

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

         21. DUTIES OF RIGHTS AGENT.  The Rights Agent undertakes the duties and
obligations  imposed by this Agreement upon the following  terms and conditions,
by all of which the  Company and the  holders of Rights  Certificates,  by their
acceptance thereof, shall be bound:

         (a) The Rights Agent may consult with legal counsel 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.

         (b) Whenever in the  performance of its duties under this Agreement the
Rights  Agent  shall  deem it  necessary  or  desirable  that any fact or matter
(including,  without  limitation,  the identity of any Acquiring  Person and the
determination of "current market price") be proved or established by the Company
prior to taking or suffering any action  hereunder,  such fact or matter (unless
other  evidence in respect  thereof be herein  specifically  prescribed)  may be
deemed to be conclusively  proved and established by a certificate signed by the
President, any Vice President, the Chief Financial Officer, the Secretary or any
Assistant Secretary of the Company and delivered to the Rights Agent;


<PAGE>


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
Agreement in reliance upon such certificate.

         (c) The  Rights  Agent  shall  be  liable  hereunder  only  for its own
negligence, bad faith or willful misconduct. In no case will the Rights Agent be
liable for special, indirect, incidental or consequential loss or damages of any
kind whatsoever (including but not limited to lost profits),  even if the Rights
Agent has been advised of the possibility of such damages.

         (d) The Rights Agent shall not be liable for or by reason of any of the
statements  of fact or recitals  contained  in this  Agreement  or in the Rights
Certificates  (except  as to the  fact  that  it has  countersigned  the  Rights
Certificates)  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.

         (e) The Rights Agent shall not be under any  responsibility  in respect
of the validity of this  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 Rights Certificate (except its countersignature  thereof);  nor
shall it be  responsible  for any  breach  by the  Company  of any  covenant  or
condition contained in this Agreement or in any Rights Certificate; nor shall it
be responsible for any adjustment required under the provisions of Section 11 or
13 or responsible for the manner, method or amount of any such adjustment or the
ascertaining  of the existence of facts that would  require any such  adjustment
(except with respect to the exercise of Rights evidenced by Rights  Certificates
after  receipt of a  certificate  pursuant  to Section  12  describing  any such
adjustment);  nor shall it be responsible for any  determination by the Board of
the current  market  value of the Rights or  Preferred  Shares or Common  Shares
pursuant to the  provisions  of Section 15; 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 or other securities to be issued pursuant to
this Agreement or any Rights  Certificate or as to whether any Preferred  Shares
or other  securities  will,  when so issued,  be validly  authorized and issued,
fully paid and nonassessable.

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

         (g) The  Rights  Agent is  hereby  authorized  and  directed  to accept
instructions  with  respect  to the  performance  of its  duties  hereunder  and
certificates delivered pursuant to any provision hereof from the President,  any
Vice President,  the Secretary,  any Assistant  Secretary or the Chief Financial
Officer of the Company,  and is  authorized to apply to such officers for advice
or instructions  in connection  with its duties,  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.  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  Agreement  and the
date on and/or  after which such action shall be taken or omitted and the Rights
Agent shall not be liable 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 (3)  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 or
omitting any such action, the Rights Agent has received written  instructions in
response to such application specifying the action to be taken or omitted.

     (h) The Rights Agent and any shareholder,  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 the Rights  Agent under
this  Agreement.  Nothing  herein shall preclude the Rights Agent from acting in
any other capacity for the Company or for any other legal entity.

         (i) The Rights  Agent may  execute  and  exercise  any of the rights or
powers hereby vested in it or perform any duty hereunder  either itself or by or
through its attorneys or agents, and the Rights Agent shall not be answerable or
accountable for any act,  omission,  default,  neglect or misconduct of any such
attorneys or agents or for


<PAGE>


any loss to the Company or to the holders of the Rights  resulting from any such
act,  omission,  default,  neglect or misconduct,  provided  reasonable care was
exercised in the selection and continued employment thereof.

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

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

         22.  CHANGE OF RIGHTS AGENT.  The Rights Agent or any successor  Rights
Agent may resign and be  discharged  from its duties under this  Agreement  upon
thirty  (30) days notice in writing  mailed to the Company and to each  transfer
agent of the Common Shares and Preferred Shares by registered or certified mail,
and to holders of the Rights  Certificates by first-class  mail. 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  Preferred
Shares by  registered  or  certified  mail,  and to the  holders  of the  Rights
Certificates by first-class mail. If the Rights Agent shall resign or be removed
or shall  otherwise  become  incapable of acting,  the Company  shall  appoint a
successor  to  the  Rights  Agent.  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
Rights  Certificate  (who shall,  with such notice,  submit such holder's Rights
Certificate  for inspection by the Company),  then the registered  holder of any
Rights  Certificate  may apply to any court of  competent  jurisdiction  for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court,  shall be (a) a  corporation  or other entity
organized and doing business under the laws of the United States or of the State
of New York or the  State of  California  (or of any other  state of the  United
States so long as such  corporation or other entity is authorized to do business
as a banking  institution in the State of New York or the State of  California),
in good  standing,  having a  principal  office  in the State of New York or the
State of California,  which is authorized under such laws to exercise  corporate
trust  or  shareholder   services  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
$50,000,000.00 or (b) an affiliate of a corporation or other entity described in
clause (a) of this sentence. After appointment, the successor Rights Agent shall
be vested with the same powers, rights, duties and responsibilities as if it had
been  originally  named as Rights  Agent  without  further act or deed;  but the
predecessor  Rights  Agent shall  deliver and transfer to the  successor  Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance,  conveyance, act or deed necessary for the purpose. Not later
than the effective  date of any such  appointment  the Company shall mail notice
thereof in writing to the  predecessor  Rights Agent and each transfer  agent of
the Common Shares and Preferred Shares,  and mail a notice thereof in writing to
the registered  holders of the Rights  Certificates.  Failure to give any notice
provided  for in this  Section 22,  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.

         23.  ISSUANCE OF NEW RIGHTS  CERTIFICATES.  Notwithstanding  any of the
provisions of this Agreement or of the Rights to the contrary,  the Company may,
at its option,  issue new Rights Certificates  evidencing Rights in such form as
may be approved by the Board to reflect any adjustment or change in the Purchase
Price per share and the number or kind or class of shares or other securities or
property  purchasable under the Rights  Certificates made in accordance with the
provisions of this  Agreement.  In addition,  in connection with the issuance or
sale  of  Common  Shares  following  the  Distribution  Date  and  prior  to the
redemption 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
otherwise under any employee plan or  arrangement,  which plan or arrangement is
existing  as of the  Distribution  Date,  or upon the  exercise,  conversion  or
exchange  of any  other  securities  issued  by the  Company  on or prior to the
Distribution  Date,  and (b) may,  in any other  case,  if deemed  necessary  or
appropriate by the Board, issue Rights Certificates representing the appropriate
number of Rights in connection  with such issuance or sale;  PROVIDED,  HOWEVER,
that (i) no such Rights Certificates 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


<PAGE>


adverse  tax  consequences  to the  Company or the  Person to whom such  Rights
Certificates  would be issued,  and (ii) no such  Rights  Certificates  shall be
issued if, and to the extent that  appropriate  adjustment  shall otherwise have
been made in lieu of the issuance thereof.

         24.      REDEMPTION, TERMINATION AND EXCHANGE.
 .
         (a) (i) The Board may, at its option,  at any time prior to the earlier
of (x) the Stock  Acquisition Date or (y) 5:00 p.m.,  Pacific time, on the Final
Expiration Date, redeem all but not less than all of the then outstanding Rights
at a redemption price of $0.001 per Right, appropriately adjusted to reflect any
stock split, stock dividend or similar transaction occurring after the Effective
Date (such  redemption  price being  hereinafter  referred to as the "Redemption
Price").

     (ii) In addition,  and  notwithstanding the provisions of Section 24(a)(i),
the Board may redeem all but not less than all of the then outstanding Rights at
the  Redemption  Price  following  the Stock  Acquisition  Date but prior to any
Section 13 Event either (x) in connection with any Section 13 Event in which all
holders  of Common  Shares are  treated  alike  with all other  holders  and not
involving  (other than as a holder of Common Shares being treated like all other
such  holders) an Acquiring  Person or an Affiliate or Associate  thereof or any
other Person in which such  Acquiring  Person or Affiliate or Associate  thereof
has any interest, or any other Person acting directly or indirectly on behalf of
or in  association  with any such  Acquiring  Person or  Affiliate  or Associate
thereof,  or (y)  following  the  occurrence  of a  Section  11  Event,  and the
expiration  of any period  during  which the holder of Rights may  exercise  the
rights under Section  11(a)(ii) as a result  thereof,  if and for as long as any
Acquiring  Person  having  triggered  the  Section  11  Event  at  issue  is not
thereafter the  Beneficial  Owner of Common Shares  representing  twenty percent
(20%)  or  more  of the  Common  Shares  then  outstanding,  and at the  time of
redemption there are no other Persons who are Acquiring Persons.

         (b) In the  case of a  redemption  permitted  under  Section  24(a)(i),
immediately  upon the action of the Board ordering the redemption of the Rights,
evidence  of which  shall have been filed with the Rights  Agent and without any
further  action and without any  notice,  the right to exercise  the Rights will
terminate  and the only right  thereafter  of the holders of Rights  shall be to
receive the Redemption  Price. In the case of a redemption  permitted only under
Section  24(a)(ii),  evidence  of which  shall  have been  filed with the Rights
Agent,  the right to exercise the Rights will  terminate and represent  only the
right to  receive  the  Redemption  Price  only  after  ten (10)  Business  Days
following the giving of notice of such  redemption to the holders of such Rights
if no Section 11 Event  shall have  occurred,  and,  if a Section 11 Event shall
have occurred,  upon the later of ten (10) Business Days following the giving of
such  notice or the  expiration  of any  period  during  which the Rights may be
exercised  under  Section  11(a)(ii) as a result  thereof.  Within ten (10) days
after the action of the Board  ordering any such  redemption of the Rights,  the
Company shall give notice of such redemption to the Rights Agent and the holders
of the then outstanding Rights by mailing such notice to the Rights Agent and 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 notice.  Each such notice of  redemption  will state the method by which the
payment of the Redemption Price will be made.

         In the case of a redemption  permitted under Section  24(a)(i) or (ii),
the Company may, at its option, discharge all of its obligations with respect to
the Rights by (i) issuing a press release announcing the manner of redemption of
the Rights and (ii) mailing  payment of the  Redemption  Price to the registered
holders of the Rights at their last  addresses  as they  appear on the  registry
books of the Rights Agent or, prior to the  Distribution  Date,  on the registry
books of the transfer  agent of the Common  Shares,  and upon such  action,  all
outstanding  Rights  Certificates  shall be null and void  without  any  further
action by the Company.

         (c) (i) Subject to the  limitations of applicable  laws, the Board may,
at its  option and at any time after any  Person  becomes an  Acquiring  Person,
exchange all or part of the then outstanding and exercisable Rights (which shall
not include  Rights that have become void pursuant to the  provisions of Section
7(e)) for (A) Common  Shares at an exchange  ratio of one Common  Share for each
Right,  appropriately  adjusted to reflect any stock  split,  stock  dividend or
similar  transaction  occurring  after the Effective Date (referred to herein as
the "Exchange Shares"), or (B) Substitute Consideration (as that term is defined
below).  The Board may  determine,  in its sole  discretion,  whether to deliver
Exchange Shares or Substitute Consideration.  Notwithstanding the foregoing, the
Board  shall not be  empowered  to effect  such  exchange  at any time after any
Person (other than the Company, any subsidiary of the


<PAGE>


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 Common Shares  representing  fifty percent (50%) or more of
the Common Shares then outstanding.

                  (ii)  In the  event  the  Board  shall  determine  to  deliver
Substitute Consideration in exchange for Rights, the Company shall (A) determine
the value of the Exchange Shares  (referred to herein as the "Exchange  Value"),
and (B) with respect to each Right to be exchanged,  make adequate  provision to
substitute for Exchange Shares the following (the  "Substitute  Consideration"):
(v) cash, (w) Common Shares or common share equivalents (as that term is defined
in Section  11(a)(iii)) or Preferred  Shares or equivalent  preferred shares (as
that term is defined in Section 11(b)), (x) debt securities of the Company,  (y)
other assets, or (z) any combination of the foregoing, having an aggregate value
equal to the Exchange  Value where such aggregate  value has been  determined by
the Board based upon the advice of a nationally  recognized  investment  banking
firm selected by the Board.  For purposes of this Section 24(c),  the value of a
Common Share (insofar as the same relates to the  determination  of the value of
Exchange  Shares)  shall be the current per share  market  price (as  determined
pursuant to Section 11(d)) of such Common Shares on the day that is the later of
(x) the  first  occurrence  of a  Section  11 Event or (y) the date on which the
Company's  right of redemption  pursuant to Section  24(a)(i)  expires;  and the
value of any common share  equivalent  shall be deemed to have the same value as
the related Common Share on such date.

                  (iii)  Immediately  upon the action of the Board  ordering the
exchange of any Rights  pursuant to this Section 24(c),  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
Exchange Shares or appropriate Substitute Consideration for each Right exchanged
by such  holder.  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  Common  Shares  (or  Substitute
Consideration)  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  (other  than  Rights
which have become void pursuant to the  provisions of Section 7(e)) held by each
holder of Rights.

                  (iv) In the event that there  shall not be  sufficient  Common
Shares or Preferred Shares issued but not outstanding or authorized but unissued
to permit any exchange of Rights as contemplated in accordance with this Section
24(c),  the Company  shall take all such action as may be necessary to authorize
additional  Common Shares or Preferred  Shares for issuance upon exchange of the
Rights.

                  (v) The Company  shall not be required to issue  fractions  of
Common Shares or to distribute  certificates  which evidence  fractional  Common
Shares. In lieu of such fractional  Common Shares,  the Company shall pay to the
registered  holders  of the  Rights  Certificates  with  regard  to  which  such
fractional  Common Shares would otherwise be issuable an amount in cash equal to
the same fraction of the current  market value of a whole Common Share.  For the
purposes of this Section  24(c)(v),  the current  market value of a whole Common
Share shall be the closing  price of a Common Share (as  determined  pursuant to
Section  11(d)) for the  Trading Day  immediately  prior to the date of exchange
pursuant to this Section 24(c).

         25. NOTICE OF CERTAIN EVENTS.  In case the Company shall propose (a) to
pay any  dividend  payable  in stock of any class to any  holders  of  Preferred
Shares or to make any other  distribution  to any  holders of  Preferred  Shares
(other than a regular quarterly dividend out of earnings or retained earnings of
the  Company)  or (b) to offer to any  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   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 more than
fifty  percent  (50%) of the  assets or  earning  power of the  Company  and its
subsidiaries  (taken as a whole)  to,  any other  Person,  or (e) to effect  the
liquidation,  dissolution or winding up of the Company, then, in each such case,
the Company  shall give to each holder of a Rights  Certificate,  in  accordance
with  Section 26, a notice of such  proposed  action,  which  shall  specify the
record 

<PAGE>

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 holders of the Preferred  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 twenty (20) 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  twenty  (20) days
prior  to the  date  of the  taking  of  such  proposed  action  or the  date of
participation therein by holders of the Preferred Shares, whichever shall be the
earlier.

         In case any Triggering  Event shall occur,  then, in any such case, the
Company or the Principal Party, as the case may be, shall as soon as practicable
thereafter  give to each  holder of a Rights  Certificate,  in  accordance  with
Section 26, a notice of the  occurrence of such  Triggering  Event,  which shall
specify the Triggering  Event and the  consequences  of the Triggering  Event to
holders of Rights under Section 11(a)(ii) or 13(a), as the case may be.

         The  failure to give notice  required by this  Section 25 or any defect
therein  shall not affect the  legality or  validity of the action  taken by the
Company or the vote upon any such action.

         26.  NOTICES.  Notices or demands  authorized  by this  Agreement to be
given or made by the Rights Agent or by the holder of any Rights  Certificate to
or on the Company  shall be  sufficiently  given or made if sent by  first-class
mail,  postage  prepaid,  or sent by nationwide  overnight  delivery,  addressed
(until another address is filed in writing with the Rights Agent) as follows:

                           Agouron Pharmaceuticals, Inc.
                           10350 North Torrey Pines Road
                           La Jolla, CA  92037
                           Attention:  President

         Subject  to  the  provisions  of  Section  22,  any  notice  or  demand
authorized by this Agreement to be given or made by the Company or by the holder
of any Rights  Certificate to or on the Rights Agent shall be sufficiently given
or made if sent by  first-class  mail,  postage  prepaid,  or sent by nationwide
overnight  delivery,  addressed  (until another address is filed in writing with
the Company) as follows:

                           ChaseMellon Shareholder Services, L.L.C.
                           85 Challenger Road
                           Ridgefield Park, NJ 07660
                           Attention:  Compliance Area

         Notices or demands  authorized by this Agreement to be given or made by
the Company or the Rights Agent to the holder of any Rights Certificate shall be
sufficiently given or made if sent by first-class mail, postage prepaid, or sent
by  nationwide  overnight  delivery,  addressed to such holder at the address of
such holder as shown on the registry books of the Company.

         Each such  notice or demand  shall be  effective  (i) if given by mail,
three (3) days after the notice or demand is  deposited  in the mails with first
class  postage  prepaid,  addressed  as  specified  herein,  (ii)  if  given  by
nationwide  overnight  delivery,  the date of delivery at the address  specified
herein or (iii) if given by any other means, the date of delivery at the address
specified herein.


<PAGE>



         27.      SUPPLEMENTS AND AMENDMENTS.

         (a) The Company and the Rights  Agent may from time to time  supplement
or amend this  Agreement  without  approval  of any  holders of Rights or Rights
Certificates  in order (i) to cure any ambiguity,  (ii) to correct or supplement
any provision  contained herein which may be defective or inconsistent  with any
other  provisions  herein,  (iii) prior to the  Distribution  Date, to change or
supplement  any  provision  hereunder  in any manner  which the Company may deem
necessary or desirable, or (iv) on or following the Distribution Date, to change
or supplement  any provision  hereunder in any manner which the Company may deem
necessary or desirable and which shall not adversely affect the interests of the
holders of Rights  Certificates.  Upon the  delivery  of a  certificate  from an
appropriate  officer of the Company which states that the proposed supplement or
amendment is in  compliance  with the terms of this Section 27, the Rights Agent
shall execute such  supplement  or amendment  unless the Rights Agent shall have
determined  in good faith that such  supplement  or  amendment  would  adversely
affect its interests under this Agreement.

         (b) Prior to the  Distribution  Date,  the  interests of the holders of
Rights shall be deemed  coincident  with the  interests of the holders of Common
Shares.

         28. DETERMINATION AND ACTIONS BY THE BOARD, ETC.

         (a) For all purposes of this  Agreement,  any calculation of the number
of Common Shares  outstanding at any particular  time (or the total voting power
pertaining  thereto),  including  for  purposes of  determining  the  particular
percentage of such  outstanding  Common Shares or any other  securities of which
any  Person  is the  Beneficial  Owner  (or the total  voting  power  pertaining
thereto),   shall  be  made  in  accordance  with  the  last  sentence  of  Rule
13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act as in
effect on the Effective Date.

         (b)  The  Board  shall  have  the  exclusive  power  and  authority  to
administer  this  Agreement  and to exercise all rights and powers  specifically
granted to the Board or 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 a  determination  to redeem or not redeem the Rights or to
amend this  Agreement).  All such  actions,  calculations,  interpretations  and
determinations  (including, for purposes of clause (y) below, all omissions with
respect  to the  foregoing)  which are done or made by the  Board in good  faith
shall (x) be final, conclusive and binding on the Company, the Rights Agent, the
holders of the Rights Certificates and all other parties and (y) not subject the
Board to any liability to the holders of the Rights Certificates.

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

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

         31. SEVERABILITY.  If any term,  provision,  covenant or restriction of
this Agreement is held by a court of competent  jurisdiction  or other authority
to be invalid,  void or unenforceable,  the remainder of the terms,  provisions,
covenants  and  restrictions  of this  Agreement  shall remain in full force and
effect and shall in no way be affected, impaired or invalidated.

         32.  GOVERNING  LAW.  This  Agreement,   each  Right  and  each  Rights
Certificate  issued  hereunder  shall be deemed to be a contract  made under the
laws of the State of


<PAGE>


California 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 to be
performed entirely within such state.

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

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

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

Attest:                            AGOURON PHARMACEUTICALS, INC.



By                                 By                                         

Title                              Title                                       

Attest:                            CHASEMELLON SHAREHOLDER SERVICES, L.L.C.


By                                 By                                         

Title                              Title                                       
<PAGE>


                                    EXHIBIT A


                           Form of Rights Certificate


Certificate No. R-_____________     _____________ Rights

         NOT  EXERCISABLE  AFTER  NOVEMBER  21,  2006 OR  EARLIER  IF  NOTICE OF
         REDEMPTION  IS GIVEN.  THE RIGHTS ARE  SUBJECT  TO  REDEMPTION,  AT THE
         OPTION OF THE COMPANY,  AT $0.001 PER RIGHT,  ON THE TERMS SET FORTH IN
         THE  RIGHTS   AGREEMENT.   [THE  RIGHTS   REPRESENTED  BY  THIS  RIGHTS
         CERTIFICATE  WERE ISSUED TO A PERSON WHO WAS AN ACQUIRING  PERSON OR AN
         AFFILIATE OR AN ASSOCIATE  OF AN  ACQUIRING  PERSON,  AS SUCH TERMS ARE
         DEFINED IN THE RIGHTS AGREEMENT. THIS RIGHTS CERTIFICATE AND THE RIGHTS
         REPRESENTED HEREBY MAY BECOME VOID UNDER THE CIRCUMSTANCES SPECIFIED IN
         SECTION 7(E) OF THE RIGHTS AGREEMENT.]*


                               RIGHTS CERTIFICATE

                          AGOURON PHARMACEUTICALS, 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 November 10, 1998 (the "Rights
Agreement") between Agouron Pharmaceuticals, Inc., a California corporation (the
"Company"),  and ChaseMellon Shareholder Services,  L.L.C. (the "Rights Agent"),
to purchase  from the Company at any time after the  Distribution  Date (as such
term is defined in the Rights  Agreement) and prior to 5:00 p.m.  (Pacific time)
on November 21,  2006,  at the office of the Rights  Agent  designated  for such
purpose, one one-ten thousandth of a fully paid, nonassessable share of Series B
Participating  Preferred  Stock (the  "Preferred  Shares") of the Company,  at a
purchase  price of $250.00 per one one-ten  thousandth of a share (the "Purchase
Price"),  upon  presentation  and surrender of this Rights  Certificate with the
appropriate  Form of Election to Purchase and  Certificate  duly  executed.  The
number of Rights  evidenced  by this Rights  Certificate  (and the number of one
one-ten  thousandths of a share which may be purchased upon exercise hereof) set
forth above, and the Purchase Price set forth above, are the number and Purchase
Price as of the close of business on November 10, 1998,  based on the  Preferred
Shares as constituted at such date.

*    The portion of the legend in brackets shall be inserted only if applicable.

<PAGE>


         Upon the  occurrence of a Triggering  Event (as such term is defined in
the Rights  Agreement),  if the Rights evidenced by this Rights  Certificate are
beneficially  owned by (i) an  Acquiring  Person (as such term is defined in the
Rights  Agreement),  (ii)  a  transferee  of any  such  Acquiring  Person  or an
Associate  or  Affiliate  thereof  (as such  terms  are  defined  in the  Rights
Agreement),  or  (iii)  under  certain  circumstances  specified  in the  Rights
Agreement,  a transferee of an Acquiring Person, or an Affiliate or Associate of
an Acquiring Person, such Rights shall become null and void and no holder hereof
shall have any right with  respect to such Rights from and after the  occurrence
of any such Triggering Event.

         As provided in the Rights Agreement,  the Purchase Price and the number
and kind of Preferred Shares or other securities which may be purchased upon the
exercise  of the Rights  evidenced  by this  Rights  Certificate  are subject to
modification and adjustment upon the happening of certain events.

         This Rights Certificate is subject to all of the terms,  provisions and
conditions of the Rights Agreement,  which terms,  provisions and conditions are
hereby  incorporated  herein by  reference  and made a part  hereof and to which
Rights Agreement  reference is hereby made for a full description of the rights,
limitations  of rights,  obligations,  duties and  immunities  hereunder  of the
Rights Agent, the Company and the holders of the Rights Certificates.  Copies of
the Rights  Agreement are on file at the principal office of the Company and are
also available upon written request to the Company.

         This Rights  Certificate,  with or without  other Rights  Certificates,
upon  surrender at the office of the Rights Agent  designated  for such purpose,
may be exchanged for another Rights  Certificate or Rights  Certificates of like
tenor  and date  evidencing  Rights  entitling  the  holder to  purchase  a like
aggregate  number of  Preferred  Shares as the  Rights  evidenced  by the Rights
Certificate or Rights  Certificates  surrendered shall have entitled such holder
to purchase.  If this Rights Certificate shall be exercised (other than pursuant
to Section  11(a)(ii)  of the Rights  Agreement)  in part,  the holder  shall be
entitled to receive upon surrender  hereof another Rights  Certificate or Rights
Certificates  for the  number of whole  Rights  not  exercised.  If this  Rights
Certificate shall be exercised in whole or in part pursuant to Section 11(a)(ii)
of the Rights  Agreement,  the holder  shall be entitled to receive  this Rights
Certificate duly marked to indicate that such exercise has occurred as set forth
in the Rights Agreement.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this  Certificate may, but are not required to, be redeemed by the Company at
its option at a redemption price of $0.001 per Right.  Subject to the provisions
of the Rights Agreement,  the Company,  at its option, may elect to mail payment
of the redemption  price to the  registered  holder of the Rights at the time of
redemption,  in which event this certificate may become void without any further
action by the Company.

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



<PAGE>


         No holder of this  Rights  Certificate,  as such,  shall be entitled to
vote or  receive  dividends  or be  deemed  for any  purpose  the  holder of 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  shareholder  of the  Company  or any right to vote for the
election  of  directors  or upon any matter  submitted  to  shareholders  at any
meeting thereof,  or to give or withhold consent to any corporate  action, or to
receive notice of meetings or other actions  affecting  shareholders  (except as
provided  in the Rights  Agreement),  or to receive  dividends  or  subscription
rights,  or  otherwise,  until  the  Right or Rights  evidenced  by this  Rights
Certificate shall have been exercised as provided in the Rights Agreement.

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

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

         Dated:  ______________.

Attest:                                     AGOURON PHARMACEUTICALS, INC.



____________________________        By _______________________________

Title ______________________        Title ____________________________


Countersigned:

CHASEMELLON SHAREHOLDER
SERVICES, L.L.C.



By _________________________


<PAGE>


                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT

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


         FOR    VALUE     RECEIVED,     _______________________________     
hereby     sells,     assigns    and     transfers     unto

_______________________________________________________________________
(please print name and address of transferee)
___________________________________________________________      this     Rights
Certificate,  together  with all right,  title and  interest  therein,  and does
hereby irrevocably constitute and appoint ____________________________ Attorney,
to  transfer  the within  Rights  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 under the Securities Exchange Act of 1934.


<PAGE>


                                   CERTIFICATE


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

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

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

         Dated:  ______________.



                                              __________________________________
                                              Signature


                                     NOTICE


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

         In the event the  Certificate  set forth  above is not  completed,  the
Company will deem the  beneficial  owner of the Rights  evidenced by this Rights
Certificate to be an Acquiring  Person or an Affiliate or Associate  thereof (as
defined in the Rights  Agreement)  and will affix a legend to that effect on any
Rights Certificate issued in exchange for this Rights Certificate.


<PAGE>


                          FORM OF ELECTION TO PURCHASE

                      (To be executed if holder desires to
                   exercise the Rights Certificate pursuant to
                   Section 11(a)(ii) of the Rights Agreement.)


To  AGOURON PHARMACEUTICALS, INC.:


         The undersigned hereby irrevocably elects to exercise __________ Rights
represented by this Rights Certificate to purchase
the Common Shares (or such other  securities  of the Company)  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)

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


         The Rights Certificate shall be returned to the undersigned (indicating
the balance, if any, of such Rights which may still
be exercised  pursuant to Section 11(a)(ii) of the Rights Agreement) unless such
Person  requests  that the Rights  Certificate  be registered in the name of and
delivered to:
- ----------------------------------------------------------------
Please insert social  security or other  identifying  number  (complete  only if
Rights Certificate is to be registered in a name other than the undersigned)

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

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

         Dated:  ______________.


                                              __________________________________
                                              Signature
Signature Guaranteed:

         Signatures must be guaranteed by an Eligible Guarantor Institution,  as
defined in Rule 17Ad-15 under the Securities Exchange Act of 1934.


<PAGE>


                                   CERTIFICATE


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

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

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

         Dated:  ______________.



                                              __________________________________
                                              Signature


                                     NOTICE


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

         In the event the  Certificate  set forth  above is not  completed,  the
Company will deem the  beneficial  owner of the Rights  evidenced by this Rights
Certificate to be an Acquiring  Person or an Affiliate or Associate  thereof (as
defined in the Rights Agreement).


<PAGE>


                          FORM OF ELECTION TO PURCHASE

                  (To be executed if holder desires to exercise
                  the Rights Certificate other than pursuant to
                   Section 11(a)(ii) of the Rights Agreement.)


To  AGOURON PHARMACEUTICALS, INC.:


         The undersigned hereby irrevocably elects to exercise __________ Rights
represented by this Rights Certificate to purchase
the  Preferred  Shares (or such  other  securities  of the  Company or any other
Person) 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 applicable,  the Rights Certificate  indicating the balance, if any,
of such Rights which may still be exercised pursuant
to  Section  11(a)(ii)  of  the  Rights  Agreement  shall  be  returned  to  the
undersigned   unless  such  Person  requests  that  the  Rights  Certificate  be
registered in the name of and delivered to:
- ----------------------------------------------------------------
Please insert social  security or other  identifying  number  (complete  only if
Rights Certificate is to be registered in a name other than the undersigned)

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

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

         Dated:  ______________.


                                              __________________________________
                                              Signature
Signature Guaranteed:

         Signatures must be guaranteed by an Eligible Guarantor Institution,  as
defined in Rule 17Ad-15 under the Securities Exchange Act of 1934.


<PAGE>


                                   CERTIFICATE


         The  undersigned  hereby  certifies by checking the  appropriate  boxes
that:

         (1) the Rights evidenced by this Rights Certificate |_| are |_| are not
being exercised by or on behalf of a Person who is or was an Acquiring Person or
an  Affiliate  or  Associate  of any such  Acquiring  Person  (as such terms are
defined in the Rights Agreement); and

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

         Dated:  ______________.



                                              __________________________________
                                              Signature


                                     NOTICE


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

         In the event the  Certificate  set forth  above is not  completed,  the
Company will deem the  beneficial  owner of the Rights  evidenced by this Rights
Certificate to be an Acquiring  Person or an Affiliate or Associate  thereof (as
defined in the Rights Agreement).





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