INFORMATION RESOURCES INC
8-A12G/A, 1997-10-28
ENGINEERING, ACCOUNTING, RESEARCH, MANAGEMENT
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<PAGE>
 
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549
                       ----------------------------------


                                   FORM 8-A/A
                      -----------------------------------


               FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR (g) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                          INFORMATION RESOURCES, INC.
- --------------------------------------------------------------------------------
             (Exact name of Registrant as specified in its charter)


             Delaware                                   36-2947987
- --------------------------------------------------------------------------------
(State of incorporation or organization)    (I.R.S. Employer Identification No.)


            150 North Clinton Street, Chicago, Illinois  60661-1416
- --------------------------------------------------------------------------------
           (Address of principal executive offices)       (Zip Code)


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


                                      None
- --------------------------------------------------------------------------------
If this form relates to the registration of a class of securities pursuant to
Section 12(b) of the Exchange Act and is effective pursuant to General
Instruction A.(c), 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), check the following box.  [X]

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
- --------------------------------------------------------------------------------
                                (Title of class)
<PAGE>
 
Item 1.  Description of Registrant's Securities to be Registered
         -------------------------------------------------------

     Item 1 is hereby amended by adding the following paragraph:

     On October 27, 1997, Information Resources, Inc. (the "Company") amended
and restated the Rights Agreement, dated as of March 2, 1989, between the
Company and Harris Trust and Savings Bank, as Rights Agent.  The amendments
extend the term of the Rights Agreement to October 2007, reduce the ownership
threshold at which the rights become exercisable from 20% to 15%, and add an
exchange feature that permits the Board of Directors to exchange the rights,
once they become exercisable, for shares of the Company's common stock at a
specified exchange ratio. Certain additional technical changes were also made.
The foregoing summary is qualified by the amended and restated Rights Agreement,
a copy of which is filed herewith as Exhibit 4.2 and incorporated herein by
reference.

Item 2.   Exhibits
          --------

     Item 2 is hereby amended by adding the following exhibit:

          Exhibit No.                  Description
          -----------                  -----------

               4.2            Rights Agreement between Information Resources,
                              Inc. and Harris Trust and Savings Bank, amended
                              and restated as of October 27, 1997


                                      -2-
<PAGE>

                                   SIGNATURE

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the Registrant has duly caused this Amendment to be signed on its
behalf by the undersigned, thereto duly authorized.

Date:  October 27, 1997             INFORMATION RESOURCES, INC.


                                    By:  /s/ Gary M. Hill
                                       -----------------------------------------
                                             Gary M. Hill
                                             Executive Vice President - Finance
                                             Chief Financial Officer


                                      -3-
<PAGE>

                                 EXHIBIT INDEX
<TABLE>
<CAPTION>
                                                                                 Sequentially
Exhibit                                                                            Numbered
Number                                Exhibit                                        Page
- -------                               -------                                 ------------------
<C>       <S>                                                                 <C>

  4.2     Rights Agreement between Information Resources, Inc. and Harris
          Trust and Savings Bank, as Rights Agent, amended and restated as
          of October 27, 1997

</TABLE>






<PAGE>
 
                                                                     EXHIBIT 4.2

                               RIGHTS AGREEMENT
                               -----------------

     This Agreement, dated as of March 2, 1989, between Information Resources,
Inc., a Delaware corporation (the "Company"), and Harris Trust and Savings Bank,
an Illinois banking corporation (the "Rights Agent"), and amended and restated
as of October 27, 1997.

                              W I T N E S S E T H
                              - - - - - - - - - -

     WHEREAS, on March 2, 1989 (the "Declaration Date"), the Board of Directors
of the Company authorized and declared a dividend of one right (a "Right") for
each outstanding share of Common Stock, $0.01 par value, of the Company (the
"Common Stock") outstanding at the close of business on March 15, 1989 (the
"Record Date"), each Right representing the right to purchase one one-hundredth
of a Preferred Share (as hereinafter defined) upon the terms and subject to the
conditions hereinafter set forth; and

     WHEREAS, the Board of Directors determined to amend and restate the
Agreement, and directed the Rights Agent to execute and deliver this amendment
and restatement.

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

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

     (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, subsequent to the Declaration Date, become the Beneficial Owner (as such
term is hereinafter defined) of 15% or more of the shares of Common Stock (as
such term is hereinafter defined) of the Company, but shall not include the
Company, any wholly owned Subsidiary (as such term is hereinafter defined) of
the Company, any employee benefit plan of the Company or of any of its wholly
owned Subsidiaries, or any entity holding Common Stock which was organized,
appointed or established by the Company or any of its wholly owned Subsidiaries
for or pursuant to the terms of any such plan. Notwithstanding the foregoing,
(i) no Person shall become an "Acquiring Person" as the result of an acquisition
of Common Stock by the Company which, by reducing the number of shares
outstanding, increases the proportionate number of shares beneficially owned by
such Person to 15% or more of the Common Stock of the Company then outstanding;
provided, that if a Person shall become the Beneficial Owner of 15% or more of
the Common Stock of the Company then outstanding by reason of share purchases by
the Company and shall, thereafter, become the Beneficial Owner of any additional
shares of Common Stock, then such Person shall be deemed to be an "Acquiring
Person," unless upon becoming the Beneficial Owner of such additional shares,
such Person Beneficially Owns less than 15% of the then outstanding Common
Stock, and (ii) if the Board of Directors determines in good faith that a Person
has become an "Acquiring Person" inadvertently, and such Person divests as
promptly as practicable (and in any event within ten business days after
notification by the Company) a sufficient number of shares of Common Stock so
that such Person would no longer be an "Acquiring Person,"
<PAGE>

then such Person shall not be deemed to have been an "Acquiring Person" for any
purposes of this Agreement.

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

     (c)  "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 (the "Exchange Act"), as in
effect on the date hereof.

     (d)  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 to acquire (whether such right is exercisable
     immediately or only after the passage of time) pursuant to any agreement
     (other than customary agreements with and between underwriters and selling
     group members with respect to a bona fide public offering of securities),
     arrangement or understanding (whether in writing or not), or upon the
     exercise of conversion rights, exchange rights, rights (other than the
     Rights described herein), warrants or options, or otherwise; provided,
     however, that a Person shall not be deemed pursuant to this clause (ii)(A)
     to be the Beneficial Owner of, or to beneficially own, any security
     tendered pursuant to a tender or exchange offer made by such Person or any
     of such Person's Affiliates or Associates until such tendered security is
     accepted for payment or exchange; or (B) the right to vote pursuant to any
     agreement, arrangement or understanding (whether in writing or not);
     provided, however, that a Person shall not be deemed pursuant to this
     clause (ii)(B) to be the Beneficial Owner of, or to beneficially own, any
     security if the agreement, arrangement or understanding to vote such
     securities (1) arises solely from a revocable proxy given to such Person in
     response to a public proxy or consent solicitation made pursuant to, and in
     accordance with, the applicable rules and regulations of the Exchange Act,
     as amended, and (2) is not also then reportable on Schedule 13D under the
     Exchange Act; or

          (iii)  which are beneficially owned, directly or indirectly, by any
     other Person with which such Person or any of such Person's Affiliates or
     Associates has any agreement (other than customary agreements with and
     between underwriters and selling group members with respect to a bona fide
     public offering of securities), arrangement or understanding (whether or
     not in writing) for the purpose of acquiring, holding, voting (except
     pursuant to a revocable proxy as described in clause (ii)(B) of this
     paragraph (d) or disposing of any securities of the Company; provided,
     however, no Existing Director shall be deemed pursuant to this clause (iii)
     to be the Beneficial Owner of, or to beneficially own, any securities owned
     by another Existing Director (or any other person who acquires by
     inheritance or devise securities as a result of death of such Existing
     Director), solely as a result of any such agreement, arrangement and
     understanding described in this clause (iii).
<PAGE>
 
     (e)  "Business Day" shall mean any day other than a Saturday, Sunday, or a
day on which banking institutions in the State of Illinois are authorized or
obligated by law or executive order to close.

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

     (g)  "Common Stock" shall mean the Common Stock, $0.01 par value, of the
Company (as it may be constituted from time to time during the term of this
Agreement), except that "Common Stock" when used with reference to any Person
other than the Company (or, in the case of a transaction referred to in Section
13 hereof, if the Company is the successor to the other Person referred in
clause (a), (b) or (c) of Section 13, or is the surviving corporation, when
thereafter used with reference to the Company) shall mean the common stock (or,
in the case of a partnership or other unincorporated entity, the equivalent
equity interest) with the greatest voting power of such Person or, if such
Person is a Subsidiary of another Person, the Person which ultimately controls
such first-mentioned Person, together with all rights and benefits (however
denominated or constituted) relating to such common stock (including, without
limitation, any rights or warrants to acquire additional shares of such common
stock or other securities or assets, or to participate in any trust for the
benefit of holders of such shares, or to share in the benefits of any agreements
or other arrangements for the benefit of such holders), whether or not such
rights are yet exercisable, and together with any other securities which are
represented by the certificates for such shares or are transferred in connection
with transfers of such shares.

     (h)  "Existing Directors" means those directors of the Company who were
also directors of the Company immediately prior to the Declaration Date, or were
elected by or upon the prior recommendation of the Existing Directors.

     (i)  "Person" shall mean any individual, firm, corporation or other entity.

     (j)  "Preferred Shares" shall mean shares of Series A Participating
Preferred Stock, par value $0.01 per share, of the Company having the rights and
preferences set forth in the form of Certificate of Designation attached to this
Agreement as Exhibit A.

     (k)  "Stock Acquisition Date" shall mean the time and day when any
Acquiring Person initially becomes such.

     (l)  "Subsidiary" shall mean, with respect to any Person, any corporation
or other entity as to which such Person beneficially owns sufficient voting
securities to elect at least a majority of its directors (or similar
individuals).

     (m)  The terms set forth below are defined in the Sections indicated below:
<PAGE>
 
<TABLE>
<CAPTION>
                          Term                           Section
                          ----                           -------
              <S>                                     <C>
              Common Stock Exchange                   11(a)(iv)(B)
                                                    
              Current Market Price                    11(d)
                                                    
              Current Value                           11(a)(iv)(A)
                                                    
              Declaration Date                        Recitals
                                                    
              Distribution Date                       3(a)
                                                    
              Equivalent Preferred Shares             11(b)
                                                    
              Exchange Act                            1(c)
                                                 
              Exchange Ratio                          22A
                                                 
              Expiration Date                         7(a)
                                                 
              Final Expiration Date                   7(a)
                                                 
              Purchase Price                          7(b)
                                                 
              Record Date                             Recitals
                                                 
              Redemption Price                        23
                                                 
              Right                                   Recitals
                                                 
              Right Certificates                      3(a) 
                                                 
              Section 11(a)(ii) Trigger Date          11(a)(iv)
                                                 
              Security                                11(d)(i)
                                                 
              Spread                                  11(a)(iv)(A)
                                                 
              Substitution Period                     11(a)(iv)
                                                 
              Summary of Rights                       3(b)
                                                 
              Trading Day                             11(d)(i)

</TABLE>


     Section 2.   Appointment of Rights Agent. The Company hereby appoints the
Rights Agent to act as agent for the Company and the holders of the Rights 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.


     Section 3.   Issue of Right Certificates.



<PAGE>
 
     (a)  Until the close of business on the earliest of (i) the day of the
first public announcement by the Company or an Acquiring Person of facts
establishing that a Stock Acquisition Date has occurred (including any such date
which is after the Declaration Date and prior to the issuance of the Rights) or
(ii) the tenth day (or such later date as may be determined by action of the
Board) after the date of commencement of, or the first public announcement of
the intention to commence, a tender offer or an exchange offer by any Person
(other than the Company or any wholly owned Subsidiary of the Company) to
acquire (when added to any equity securities as to which such Person is the
Beneficial Owner immediately prior to such commencement) 15% or more of the
issued and outstanding shares of Common Stock (including any such date which is
after the Declaration Date and prior to the issuance of the Rights), the
earliest of the dates referred to in clauses (i) and (ii) of this Section 3(a)
being referred to as the "Distribution Date," (x) the Rights will be evidenced
(subject to the provisions of paragraph (b) of this Section 3) by the
certificates for the Common Stock registered in the names of the holders of the
Common Stock (which certificates for Common Stock shall also be deemed to be
Right Certificates (as such term is hereinafter defined)) and not by separate
Right Certificates, and (y) the Rights (and the right to receive Right
Certificates) will be transferable only in connection with the transfer of the
underlying shares of Common Stock. As soon as practicable after the Distribution
Date, the Rights Agent will mail, by first-class, postage-prepaid mail, to each
record holder of the Common Stock as of the close of business on the
Distribution Date, as shown by the records of the Company, at the address of
such holder shown on such records, one or more right certificates, substantially
in the form of Exhibit B hereto (the "Right Certificates"), evidencing one Right
for each share of Common Stock so held, subject to adjustment as herein
provided. In the event that an adjustment in the number of Rights per share of
Common Stock has been made pursuant to Section 11(n) hereof, at the time the
Right Certificates are distributed the Company shall make the necessary and
appropriate rounding adjustments pursuant to Section 14(a) hereof so that Right
Certificates are distributed representing only whole numbers of Rights and cash
is paid in lieu of fractional Rights. As of the close of business on the
Distribution Date, the Rights will be evidenced solely by such Right
Certificates.

     (b)  On the Record Date or as soon as practicable thereafter, the Company
will mail a copy of the Summary of Rights to Purchase Common Stock in the form
attached hereto as Exhibit C (the "Summary of Rights"), by first-class, postage-
prepaid mail, to each record holder of the Common Stock as of the close of
business on the Record Date, as shown by the records of the Company, at the
address of such holder shown on such records. With respect to certificates for
Common Stock outstanding as of the close of business on the Record Date, until
the Distribution Date the Rights will be evidenced solely by such certificates
registered in the names of the holders thereof (whether alone or together with a
copy of the Summary of Rights). Until the Distribution Date (or earlier
redemption or expiration of the Rights), the surrender for transfer of any
certificate for Common Stock outstanding as of the close of business on the
Record Date, with or without a copy of the Summary of Rights attached thereto,
shall also constitute the transfer of the Rights associated with the Common
Stock represented thereby.

     The Company will mail to any record holder of a Right (including, prior to
the Distribution Date, a record holder of Common Stock) a copy of this Rights
Agreement, without charge within ten days of a written request therefor.



<PAGE>
 
     (c)  All certificates for Common Stock issued after the date hereof but
prior to the earlier of the Distribution Date and the Expiration Date (as such
term is hereinafter defined), shall have impressed on, printed on, written on or
otherwise affixed to them the following legend:

     This certificate also evidences and entitles the holder hereof to certain
     Rights as set forth in the Amended and Restated Rights Agreement between
     Information Resources, Inc. and Harris Trust and Savings Bank, dated as of
     October 27, 1997 (the "Rights Agreement"), the terms of which are hereby
     incorporated by reference and a copy of which is on file at the principal
     executive offices of Information Resources, Inc. Under certain
     circumstances as set forth in the Rights Agreement, such Rights will be
     evidenced by separate certificates and will no longer be evidenced by this
     certificate. Information Resources, Inc. will mail to the holder of this
     certificate a copy of the Rights Agreement without charge within ten days
     after receipt of a written request therefor. Under certain circumstances
     provided for in the Rights Agreement, Rights beneficially owned by any
     Person who is an Acquiring Person or an Affiliate or Associate thereof (as
     such terms are defined in the Rights Agreement) or any subsequent holder of
     such Rights may become null and void.

With respect to such certificates containing the foregoing legend, until the
Distribution Date, the Rights associated with the Common Stock represented by
such certificates shall be evidenced by such certificates alone, and the
surrender for transfer of any such certificate shall also constitute the
transfer of the Rights associated with the Common Stock represented thereby.

     Section 4.   Form of Right Certificates.  The Right Certificates (and the
forms of election to purchase shares and of assignment to be printed on the
reverse thereof) shall be substantially in the form of Exhibit B hereto, 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 law or with any rule or regulation of any stock exchange or
quotation system on which the Rights may from time to time be listed, or to
conform to usage. Subject to the provisions of Sections 11 and 22 hereof, the
Right Certificates, whenever distributed, shall be dated as of the Record Date,
and on their face shall entitle the holders thereof to purchase such number of
one one-hundredths of a Preferred Share as shall be set forth therein at the
Purchase Price (as such term is hereinafter defined), but the number of such one
one-hundredths of a Preferred Share and the Purchase Price shall be subject to
adjustments as provided herein. To the extent provided in Section 11(a)(iii)
hereof, certain Right Certificates shall contain the legend provided for
therein.

     Section 5.   Countersignature and Registration.  The Right Certificates
shall be executed on behalf of the Company by its Chairman of the Board, its
President or any Vice President, either manually or by facsimile signature, and
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 Right Certificates shall be manually
countersigned by the Rights Agent 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 Right Certificates shall cease to be such officer of the Company before
countersignature by the Rights Agent and issuance and



<PAGE>
 
delivery by the Company, such Right Certificates, nevertheless, may be
countersigned by the Rights Agent, and issued and delivered with the same force
and effect as though the person who signed such Right Certificates had not
ceased to be such officer of the Company; and any Right Certificate may be
signed on behalf of the Company by any person who, at the actual date of the
execution of such Right Certificate, shall be a proper officer of the Company to
sign such Right Certificate, although at the date of the execution of this
Rights Agreement any such person was not such an officer.

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

     Section 6.   Transfer, Split Up, Combination and Exchange of Right
Certificates; Mutilated, Destroyed, Lost or Stolen Right Certificates.  Subject
to the provisions of Sections 11(a)(iii) and 14 hereof, at any time after the
close of business on the Distribution Date, and at or prior to the close of
business on the Expiration Date, any Right Certificate or Certificates may be
transferred, split up, combined or exchanged for another Right Certificate or
Right Certificates, entitling the registered holder to purchase a like number of
one one-hundredths of a Preferred Share as the Right Certificate or Right
Certificates surrendered then entitled such holder to purchase. Any registered
holder desiring to transfer, split up, combine or exchange any Right Certificate
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Right Certificate or Right Certificates to be transferred, split
up, combined or exchanged at the principal office or such other office of the
Rights Agent designated for such purpose. Neither the Rights Agent nor the
Company shall be obligated to take any action whatsoever with respect to the
transfer of any such surrendered Right Certificate unless and until the
registered holder shall have completed and signed the certificate contained in
the form of assignment on the reverse side thereof and shall have provided such
additional evidence of the identity of the Beneficial Owner, former Beneficial
Owner and transferee Beneficial Owner (and Associates and Affiliates of the
foregoing) as the Company shall reasonably request. Thereupon the Rights Agent
shall countersign and deliver to the person entitled thereto a Right Certificate
or Right Certificates, as the case may be, as so requested. The Company may
require payment 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 Right Certificates.

     Upon receipt by the Company and the Rights Agent of evidence reasonably
satisfactory to them of the loss, theft, destruction or mutilation of a Right
Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them, and reimbursement to the Company and
the Rights Agent of all reasonable expenses incidental thereto, and upon
surrender to the Rights Agent and cancellation of the Right Certificate if
mutilated, the Company will make and deliver a new Right Certificate of like
tenor to the Rights Agent for delivery to the registered owner in lieu of the
Right Certificate so lost, stolen, destroyed or mutilated.

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



<PAGE>
 
     (a)  Subject to Section 11(a)(iii) and (iv) and Section 23 hereof, the
registered holder of any Right Certificate may exercise the Rights evidenced
thereby in whole or in part at any time after the Distribution Date upon
surrender of the Right Certificate, with the form of election to purchase shares
on the reverse side thereof duly executed, to the Rights Agent at its principal
office or such other office designated by it for such purpose, together with
payment of the Purchase Price for each one one-hundredth of a Preferred Share as
to which the rights are exercised, at or prior to the earlier of (i) the close
of business on October 27, 2007 (the "Final Expiration Date"), and (ii) the date
and time at which the Rights are redeemed as provided in Section 23 hereof; such
earlier date and time being referred to herein as the "Expiration Date."

     (b)  The purchase price for each one one-hundredth of a Preferred Share
pursuant to the exercise of a Right shall initially be $60, shall be subject to
adjustment from time to time as provided in Sections 11 and 13 hereof and shall
be payable in lawful money of the United States of America in accordance with
paragraph (c) below (the "Purchase Price").

     (c)  Upon receipt of a Right Certificate representing exercisable Rights,
with the form of election to purchase duly executed, accompanied by payment of
the Purchase Price for the shares 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 thereupon promptly (i) (A) requisition from any transfer agent of
the Preferred Shares (or make available, if the Rights Agent is the transfer
agent) certificates for the number of Preferred Shares to be purchased and the
Company hereby irrevocably authorizes such transfer agent to comply with all
such requests or (B) requisition from the depositary agent depositary receipts
representing such number of one one-hundredths of a Preferred Share as are to be
purchased (in which case certificates for the Preferred Shares represented by
such receipts shall be deposited by the transfer agent with the depositary
agent) and the Company hereby directs the depositary agent to comply with such
request, (ii) when appropriate, requisition from the Company the amount of cash
to be paid in lieu of issuance of fractional shares in accordance with Section
14 hereof, (iii) promptly after receipt of such certificates or depositary
receipts, cause the same to be delivered to or upon the order of the registered
holder of such Right Certificate, registered in such name or names as may be
designated by such holder, and (iv) when appropriate, promptly after receipt of
such cash deliver such cash to or upon the order of the registered holder of
such Right Certificate.

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

     (e)  Notwithstanding any other provision of this Agreement, neither the
Rights Agent nor the Company shall be obligated to take any action whatsoever
with respect to a registered holder upon the occurrence of any purported
exercise as set forth in this Section 7 unless and until the registered holder
shall have completed and signed the certificate contained in the form of
election to purchase shares set forth on the reverse side thereof and shall have
provided such additional evidence of the identity of the Beneficial Owner and
former Beneficial Owner (and Associates and Affiliates of the foregoing) as the
Company shall reasonably request.



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

     Section 9.   Reservation and Availability of Preferred Shares.  The Company
covenants and agrees that it will cause to be reserved and kept available out of
its authorized and unissued Preferred Shares or any Preferred Shares held in its
treasury, the number of Preferred Shares that will be sufficient to permit the
exercise in full of all outstanding Rights.

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

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

     The Company shall use its best efforts to (i) file, as soon as practicable
following the Distribution Date, a registration statement under 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 and the rules and regulations thereunder) until the
expiration of the Rights. The Company will also take such action as may be
appropriate under the blue sky laws of the various states.

     Section 10.   Preferred Share Record Date.  Each person in whose name any
certificate or depositary receipt for Preferred Shares is issued upon the
exercise of Rights shall for all purposes be deemed to have become the holder of
record of the Preferred Shares represented thereby on, and



<PAGE>
 
such certificate or depositary receipt shall be dated, the date upon which the
Right Certificate evidencing such Rights was duly surrendered and payment of the
Purchase Price (and any applicable transfer taxes) was made; provided, however,
that if the date of such surrender and payment is a date upon which the
Preferred Share 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
or depositary receipt shall be dated, the next succeeding Business Day on which
the Preferred Share transfer books of the Company are open. Prior to the
exercise of the Rights evidenced thereby, the holder of a Right Certificate
shall not be entitled to any rights of a holder of Preferred Shares of the
Company for which the Rights shall be exercisable, including, without
limitation, the right to vote, to receive dividends or other distributions or to
exercise any preemptive rights, and shall not be entitled to receive any notice
of any proceedings of the Company, except as provided herein.

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

          (ii)  In the event that any Person, alone or together with its
     Affiliates and Associates, shall become an Acquiring Person, then proper
     provision shall be made so that each holder of a Right (except as otherwise
     provided in clause (iii) below) thereafter shall have the right to receive,
     upon exercise thereof at the then current Purchase Price in accordance with
     the terms of this Agreement, in lieu of Preferred Shares, such number of
     shares of Common Stock of the Company as shall equal the result obtained
     (x) by multiplying the then current Purchase Price by the then number of
     one one-hundredths of a Preferred Share for which a Right is then
     exercisable and (y) dividing that product by 50% of the current market
     price per share of the Common Stock (determined pursuant to Section



<PAGE>
 
     11(d) hereof) on the date of the occurrence of the event listed in this
     clause (ii), and, at the time such provision is made the Company shall
     cause to be reserved out of its authorized but unissued (or treasury)
     shares of Common Stock, the lesser of (m) the number of such shares that
     will be sufficient to permit the exercise in full of all outstanding Rights
     (other than those referred to in clause (iii) below) and (n) the number of
     such shares which are authorized by the Company's certificate of
     incorporation but not outstanding or reserved for issuance for purposes
     other than upon exercise of the Rights.

          (iii)  Notwithstanding any provision of this Agreement, upon the
     occurrence of the event listed in subparagraph (ii) above or of any of the
     events set forth in Section 13, any Rights beneficially owned by (p) an
     Acquiring Person or any Associate or Affiliate thereof, (q) a transferee of
     an Acquiring Person (or Associate or Affiliate thereof) who becomes the
     transferee of such Rights concurrently with such Acquiring Person becoming
     such or at any time thereafter, or (r) a transferee of an Acquiring Person
     (or Associate or Affiliate thereof) who becomes a transferee prior to the
     Acquiring Person becoming such and receives such Rights pursuant to a
     transfer by the Acquiring Person to holders of its stock or other equity,
     shall become null and void, and any existing or subsequent holder of such
     Rights shall thereafter have no right to exercise such Rights under any
     provision of this Agreement. Any Right Certificate issued pursuant to
     Section 3 or Section 22 hereof that represents Rights beneficially owned by
     any Person referred to in clause (p), (q) or (r) above, and any Right
     Certificate issued pursuant to Section 6 or Section 11 hereof upon
     transfer, exchange, replacement or adjustment of any other Right
     Certificate referred to in this sentence, shall contain (to the extent
     feasible) the following legend:

          The Rights represented by this Right Certificate are or
          were beneficially owned by a Person who is, was or became
          an Acquiring Person or an Affiliate or an Associate of an
          Acquiring Person (as those terms are defined in the Rights
          Agreement). This Right Certificate and the Rights
          represented hereby may become null and void in the
          circumstances specified in the Rights Agreement.

     The Company shall use all reasonable efforts to comply with this clause
     (iii), but neither it nor the Rights Agent shall have any liability to any
     Person as a result of the failure to make any determination with respect to
     an Acquiring Person, or its Associates, Affiliates or transferees.

          (iv)  In the event that the number of shares of Common Stock which are
     authorized by the Company's certificate of incorporation but not
     outstanding or reserved for issuance for purposes other than upon exercise
     of the Rights are not sufficient to permit the exercise in full of the
     Rights in accordance with the foregoing clause (ii) of this Section 11(a),
     the Company shall:

               (A)  determine the excess of (1) the value of the shares of
          Common Stock issuable upon the exercise of a Right pursuant to the
          foregoing clause (ii) of this



<PAGE>
 
          Section 11(a) (the "Current Value") over (2) the then current Purchase
          Price (such excess being referred to herein as the "Spread"), and

               (B)  with respect to each Right, make adequate provision to
          substitute for such shares of Common Stock issuable upon exercise of a
          Right pursuant to the foregoing clause (ii) of this Section 11(a),
          upon payment of the Purchase Price, (1) cash, (2) Common Stock or
          other equity securities of the Company (including, without limitation,
          shares, or units of shares, of preferred stock which the Board of
          Directors of the Company has deemed to have the same value as shares
          of Common Stock (such shares of preferred stock being referred to
          herein as "Common Stock Equivalents")), (3) debt securities of the
          Company, (4) other assets, or (5) any combination of the foregoing
          (provided, that in making any such provision, Rights shall, to the
          fullest extent feasible in view of the number of shares of authorized
          Common Stock not outstanding or reserved for issuance for purposes
          other than upon exercise of the Rights, be exercisable for Common
          Stock); in each case having an aggregate value equal to the Current
          Value, where such aggregate value has been determined by the Board of
          Directors of the Company based upon the advice of a nationally
          recognized investment banking firm selected by the Board of Directors
          of the Company;

     provided, however, that if the Company shall not have made adequate
     provision to deliver value pursuant to clause (B) above within thirty (30)
     days following the date of occurrence of the event listed in the foregoing
     clause (ii) of this Section 11(a) (such date being referred to herein as
     the "Section 11(a)(ii) Trigger Date"), then the Company shall be obligated
     to deliver, upon the surrender for exercise of a Right and without
     requiring payment of the Purchase Price, shares of Common Stock (to the
     extent available) and then, if necessary, cash, which shares and/or cash
     have an aggregate value equal to the Spread. Notwithstanding the
     immediately preceding sentence, if the Board of Directors of the Company
     shall determine in good faith that it is likely that sufficient additional
     shares of Common Stock could be authorized for issuance upon exercise in
     full of the Rights, the thirty (30) day period set forth above may be
     extended to the extent necessary, but not to more than ninety (90) days
     after the Section 11(a)(ii) Trigger Date, in order that the Company may
     seek stockholder approval for the authorization of such additional shares
     (such period, as it may be extended, being referred to herein as the
     "Substitution Period"). To the extent that the Company determines that some
     action needs to be taken pursuant to the first and/or second sentences of
     this Section 11(a)(iv), the Company (x) shall provide, subject to the
     foregoing clause (iii) of this Section 11(a), that such action shall apply
     uniformly to all outstanding Rights (except that, to the extent reasonably
     necessary to avoid the issuance of fractional shares of Common Stock, such
     action may provide for the issuance of shares of Common Stock upon the
     exercise of more than a specified number of Rights, and issuance of other
     equity securities, cash or other assets upon the exercise of such specified
     number (or any lesser number) of Rights) and (y) may suspend the
     exercisability of the Rights until the expiration of the Substitution
     Period in order to seek any authorization of additional shares and/or to
     decide the appropriate form of distribution to be made pursuant to such
     first sentence and to determine the value thereof. In the event of any such



<PAGE>
 
     suspension, the Company shall issue a public announcement stating that the
     exercisability of the Rights has been temporarily suspended, as well as
     public announcement at such time as the suspension is no longer in effect.
     For purposes of this Section 11(a)(iv), the value of the Common Stock shall
     be the current market price (as determined pursuant to Section 11(d)
     hereof) per share of the Common Stock on the Section 11(a)(ii) Trigger Date
     and the terms of any Common Stock Equivalent shall be determined so that
     such Common Stock Equivalent shall have the same value as the Common Stock
     on such date.

     (b)  In case the Company shall fix a record date for the issuance of rights
or warrants to all holders of Preferred Shares entitling them (for a period
expiring within 45 calendar days after such record date) to subscribe for or
purchase Preferred Shares (or shares having the same rights, privileges, and
preferences as the Preferred Shares ("equivalent preferred shares")) or
securities convertible into Preferred Shares or equivalent preferred shares at a
price per Preferred Share or equivalent share (or having a conversion price per
share, if a security convertible into Preferred Shares or equivalent preferred
shares) less than the current market price per Preferred Share (as defined in
Section 11(d)) on such record date, the Purchase Price to be in effect after
such record date shall be determined by multiplying the Purchase Price in effect
immediately prior to such record date by a fraction, of which the numerator
shall be the number of Preferred Shares and equivalent 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 to be so offered (and/or the aggregate initial
conversion price of the convertible securities to be so offered) would purchase
at such current market price and of which the denominator shall be the number of
Preferred Shares and equivalent preferred shares outstanding on such record date
plus the number of additional Preferred Shares and/or equivalent preferred
shares to be offered for subscription or purchase (or into which the convertible
securities so to be offered are initially convertible). In case such
subscription price may be paid in a consideration part or all of which shall be
in a form other than cash, the value of such consideration shall be as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent.
Preferred Shares owned by or held for the account of the Company or any of its
Subsidiaries 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)  In case 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 or surviving corporation) of evidences of indebtedness or assets
(other than a regular periodic cash dividend or a dividend payable in 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 current
market price per Preferred Share (as defined in Section 11(d)) on such record
date, less the fair market value (as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a statement
filed with the Rights Agent) of the portion of the assets or evidences of
indebtedness so to be distributed or of such subscription rights or warrants



<PAGE>
 
applicable to one Preferred Share and of which the denominator shall be such
current market price 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 then be in effect if such record date had not
been fixed.

          (d) (i) For the purpose of any computation hereunder, the "current
     market price" for any security (a "Security" for purposes of this Section
     11(d)(i)) on any date shall be deemed to be the average of the daily
     closing prices per share of such Security for the 30 consecutive Trading
     Days (as such term is hereinafter defined) immediately prior to such date;
     provided, however, that in the event the current market price per share of
     the Security is determined during a period following the announcement by
     the issuer of such Security of a dividend or distribution on such Security
     payable in shares of such Security or securities convertible into shares of
     such Security, or any subdivision, combination or reclassification of such
     Security, and prior to the expiration of 30 Trading Days after the ex-
     dividend dated 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 appropriately adjusted to reflect
     ex-dividend or ex-distribution 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 Security is not listed or
     admitted to trading on the New York Stock Exchange, as reported in the
     principal consolidated transaction reporting system with respect to
     securities listed on the principal national securities exchange on which
     the shares of the Security are listed or admitted to trading or, if the
     shares of the Security are not listed or admitted to trading on any
     national securities exchange, 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 or any
     successor ("NASDAQ") or such other system then in use.  Subject to Section
     11(d)(ii) hereof, if on any such date the shares of the Security are not
     quoted by any such organization, the fair value of such shares on such date
     as determined in good faith by the Board of Directors of the Company shall
     be used, such determination to be described in a statement filed with the
     Rights Agent.  The term "Trading Day" shall mean a day on which the
     principal national securities exchange on which the shares of the Security
     are listed or admitted to trading is open for the transaction of business
     or, if the shares of the Security are not listed or admitted to trading on
     any national securities exchange, a Business Day.

          (ii) For the purpose of any computation hereunder, the "current market
     price" of the Preferred Shares shall be determined in accordance with the
     method set forth in Section 11(d)(i), except that if the Preferred Shares
     are not publicly traded, the "current market price" of the Preferred Shares
     shall be conclusively deemed to be the current per share market price of
     the Common Stock as determined pursuant to Section 11(d)(i) (appropriately
     adjusted to reflect any stock split, stock dividend or similar transaction
     occurring after the Declaration Date), multiplied by one hundred.  If
     neither the Common Stock nor the Preferred Shares are publicly held or so
     listed or traded, "current per share market price" shall mean the fair
     value                                      
<PAGE>
 
     per share as determined in good faith by the Board of Directors of the
     Company, whose determination shall be described in a statement filed with
     the Rights Agent.

     (e) No adjustment in the Purchase Price shall be required unless such
adjustment would require an increase or decrease of a least 1% in such 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 one one-millionth of a Preferred Share.
Notwithstanding the first sentence of this Section 11(e), any adjustment
required by this Section 11 shall be made no later than the earlier of (i) three
years from the date of the transaction which mandates such adjustment and (ii)
the date of the expiration of the right to exercise any Rights.

     (f) In the event that at any time, as a result of an adjustment made
pursuant to Section 11(a), the holder of any Right thereafter exercised shall
become entitled to receive any shares of capital stock other than Preferred
Shares, thereafter the number of such other shares so receivable upon exercise
of any Right shall be subject to adjustment from time to time in a manner and on
terms as nearly equivalent as practicable to the provisions with respect to the
shares contained in Section 11(a), (b), (c), (g), (h), (j), and (k), and the
provisions of Sections 7, 9, 10, 13 and 14 of this Agreement with respect to the
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-hundredths 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) of this Agreement, upon each adjustment of the Purchase Price as a
result of the calculations made in Section 11(b) and (c) of this Agreement, 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-hundredths of a Preferred Share (calculated to the nearest
one-millionth of a Preferred Share) obtained by (i) multiplying (x) the number
of one one-hundredths 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-hundredths of a Preferred Share purchasable
upon the exercise of a Right.  Each of the Rights outstanding after such
adjustment of the number of Rights shall be exercisable for the number of one
one-hundredths of a Preferred Share for which it 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 ten-thousandth) obtained by dividing the Purchase Price in effect
immediately prior to adjustment of the Purchase Price by the Purchase Price in
effect immediately after adjustment of the Purchase Price.  The Company shall
make a public announcement of its election to adjust the number of Rights,
indicating the record date for the                             
<PAGE>
 
adjustment, and, if known at the time, the amount of the adjustment to be made.
This record date may be the date on which the Purchase Price is adjusted or any
day thereafter, but, if the Right Certificates have been issued, shall be at
least 10 days later than the date of the public announcement.  If Right
Certificates have been issued, upon each adjustment of the number of Rights
pursuant to this Section 11(i) the Company shall, as promptly as practicable,
cause to be distributed to holders of record of Right Certificates on such
record date Right Certificates evidencing, subject to Section 14, the additional
Rights to which such holders shall be entitled as a result of such adjustment,
or, at the option of the Company, shall cause to be distributed to such holders
of record in substitution and replacement for the Right Certificates held by
such holders prior to the date of adjustment, and upon surrender thereof, if
required by the Company, new Right Certificates evidencing all the Rights to
which such holders shall be entitled after such adjustment. Right Certificates
so to be distributed shall be issued, executed and countersigned in the manner
provided for herein (and may bear, at the option of the Company, the adjusted
Purchase Price) and shall be registered in the names of the holders of record of
Right Certificates on the record date specified in the public announcement.

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

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

     (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 of the
Preferred Shares and other capital stock or securities of the Company, if any,
issuable upon such exercise in addition to 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 in this Section 11 to the contrary notwithstanding, the
Company shall be entitled to make such reduction in the Purchase Price, in
addition to those adjustments expressly required by this Section 11, as and to
the extent that it in its sole discretion shall determine to be advisable in
order that any consolidation or subdivision of the Preferred Shares, issuance
wholly for cash of any Preferred Shares at less than the current market price,
issuance wholly for cash or Preferred Shares or securities which by their terms
are convertible into or exchangeable for Preferred Shares, stock dividends or
issuance of rights, options or warrants referred to hereinabove in this
                             
<PAGE>
 
Section 11, hereafter made by the Company to holders of its Preferred Shares,
shall not be taxable to such stockholders.

     (n) In the event that the Company shall, at any time after the date of this
Agreement and prior to the Distribution Date, (i) declare a dividend on the
outstanding shares of Preferred Shares payable in shares of Common Stock, (ii)
subdivide the outstanding Common Stock, (iii) combine the outstanding Common
Stock into a smaller number of shares, or (iv) effect a reclassification of its
outstanding Common Stock, the number of Rights associated with each share of
Common Stock shall be proportionately adjusted so that the number of Rights
thereafter associated with each share of Common Stock immediately following any
such event shall equal the result obtained by multiplying the number of Rights
associated with each share of Common Stock immediately prior to such event by a
fraction, the numerator of which shall be the total number of shares of Common
Stock outstanding immediately prior to such event and the denominator of which
shall be the total number of shares of Common Stock outstanding immediately
following such event.

     (o) The Company covenants and agrees that, after the Stock Acquisition
Date, it will not, except as permitted by Section 23 hereof, take (or permit any
Subsidiary to take) any action the purpose or effect of which is to diminish
substantially or otherwise eliminate the benefits intended to be afforded by the
Rights unless such action is approved by a majority of the Existing Directors.

     Section 12.  Certification of Adjusted Purchase Price or Number of
Shares.  Whenever an adjustment is made as provided in Sections 11 or 13 hereof,
the Company shall (a) promptly prepare a certificate setting forth such
adjustment and a brief statement of the facts accounting for such adjustment,
(b) promptly file with the Rights Agent and with each transfer agent for the
Common Stock a copy of such certificate and (c) mail a brief summary thereof to
each holder of a Right Certificate in accordance with Section 25 hereof.

     Section 13.  Consolidation, Merger or Sale or Transfer of Assets or
Earning Power. In the event that, following the Stock Acquisition Date, directly
or indirectly, (a) the Company shall consolidate with, or merge with and into,
any other Person and the Company shall not be the continuing or surviving
corporation of such merger or consolidation, (b) any Person shall consolidate
with, or merge with and into, the Company, the Company shall be the continuing
or surviving corporation of such merger and, in connection with such
consolidation or merger, all or part of the Common Stock shall be changed into
or exchanged for stock or other securities of any other Person (or the Company)
or cash or any other property, or (c) the Company shall sell or otherwise
transfer (or one or more of its Subsidiaries shall sell or otherwise transfer),
in one or more transactions, assets or earning power aggregating more than 50%
of the assets or earning power of the Company and its Subsidiaries (taken as a
whole and calculated on the basis of the Company's most recent regularly
prepared financial statements) to any Person (together with its Affiliates)
other than the Company or one or more of its Subsidiaries shall sell or
otherwise transfer), in one or more transactions, assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole and calculated on the basis of the Company's most
recent regularly prepared financial statements) to any Person (together with its
Affiliates) other than the Company or one or more of its wholly owned
Subsidiaries, then, and in each such case, proper provision shall be made so
that (i) each holder of a Right shall thereafter have the right to receive, upon
the exercise             
<PAGE>
 
thereof at the then current Purchase Price in accordance with the terms of this
Agreement, such number of validly authorized and issued, fully paid, non-
assessable and freely tradeable shares of Common Stock of such other Person
(including the Company as successor thereto or as the surviving corporation) as
shall be equal to the result obtained (x) by multiplying the then current
Purchase Price by the number of one one-hundredths of a Preferred Share for
which a Right is exercisable immediately prior to such event and (y) dividing
that product by 50% of the current market price per share of the Common Stock of
such other Person (determined pursuant to Section 11(d) hereof) on the date of
consummation of such consolidation, merger, sale or transfer; (ii) the issuer of
such Common Stock 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 issuer; and (iv) such issuer shall take
such steps (including, but not limited to, the reservation of a sufficient
number of shares of its Common Stock in accordance with Section 9 hereof
(applying the provisions thereof with respect to Preferred Shares of the Company
to the Common Stock of such issuer)) 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 the shares of its
Common Stock thereafter deliverable upon the exercise of the Rights.  The
Company shall not enter into any transaction of the kind referred to in this
Section 13 if at the time of such transaction there are any rights, warrants,
instruments or securities outstanding or any agreements or arrangements which,
as a result of the consummation of such transaction, would eliminate or
substantially diminish the benefits intended to be afforded by the Rights.  The
Company shall not agree to consummate or consummate any such consolidation,
merger, sale or transfer unless prior thereto the Company and such issuer shall
have executed and delivered to the Rights Agent a supplemental agreement so
providing, and further providing that, as soon as practicable after the earlier
of such agreement or such consummation in this Section 13, such issuer will:

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

          (ii) deliver to holders of the Rights historical financial statements
     for such issuer which comply in all respects with the requirements for
     registration on Form 10 under the Exchange Act.

     The provisions of this Section 13 shall similarly apply to successive
mergers or consolidations or sales or other transfers.  In the event that one of
the transactions described in this Section 13 shall occur at any time after the
occurrence of a Section 11(a)(ii) Trigger Date, the Rights which have not
theretofore been exercised shall thereafter become exercisable in the manner
described in this Section.                  
<PAGE>
 
     Section 14.  Fractional Rights and Fractional Shares.
                  ----------------------------------------

     (a) The Company shall not be required to issue fractions of Rights (except,
prior to the Distribution Date, as provided in Section 11(n) hereof) or to
distribute Right Certificates which evidence fractional Rights.  In lieu of such
fractional Rights, there shall be paid to the registered holders of the Right
Certificates with regard to which such fractional Rights would otherwise be
issuable, an amount in cash equal to the same fraction of the current market
value of a whole Right. For the purposes of this Section 14(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 for any day shall be the last
sale price, regular way, or, in case no such sale takes place on such day, the
average of the closing bid and asked prices, regular way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities listed or admitted to trading on the New York Stock Exchange or,
if the Rights are not listed or admitted to trading on the New York Stock
Exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national securities exchange
on which the Rights are listed or admitted to trading or, if the Rights are not
listed or admitted to trading on any national securities exchange, the 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, as selected by the Board of Directors of the Company.  If on any such
date the Rights are not quoted by any such organization and no professional
market marker is making such a market in the Rights, the fair value of the
Rights on such date as determined in good faith by the Board of Directors of the
Company shall be used.

     (b) The Company shall not be required to issue fractions of Preferred
Shares (other than fractions which are integral multiples of one one-hundredth)
upon exercise of the Rights or to distribute certificates which evidence
fractional Preferred Shares (other than fractions which  are integral multiples
of one one-hundredth).  Fractions of Preferred Shares in integral multiples on
one one-hundredth 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 Preferred Shares represented by such depositary receipts.  In lieu of
fractional Preferred Shares that are not integral multiples of one one-hundredth
of a Preferred Share, the Company shall pay to the registered holders of Right
Certificates at the time such Rights are exercised as herein provided an amount
in cash equal to the same fraction of the current market value of one Preferred
Share.  For purposes of this Section 14(b), the current market value of a
Preferred Share shall be the closing price of a Preferred Share (as determined
pursuant to the second sentence of Section 11(d)(i) hereof) for the Trading Day
immediately prior to the date of such exercise.

     (c) The holder of a Right by his acceptance hereof expressly waives any
right to receive any fractional Rights or any fractional shares upon exercise of
a Right (except as provided above).                          
<PAGE>
 
     Section 15.    Rights of Action.  All rights of action in respect of this
Agreement are vested in the respective registered holders of the Right
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Stock); and any registered holder of any Right Certificate (or, prior to
the Distribution Date, of the Common Stock), without the consent of the Rights
Agent or of the holder of any other Right Certificate (or, prior to the
Distribution Date, any holder of the Common Stock), may, on his own behalf and
for his own benefit, enforce, and may institute and maintain any suit, action or
proceeding against the Company to enforce, or otherwise act in respect of, his
right to exercise the Rights evidenced by such Right Certificate in the manner
provided in such Right 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 will be entitled to specific performance of
the obligations under, and injunctive relief against actual or threatened
violations of the obligations of any Person subject to, this Agreement.

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

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

     (b)  after the Distribution Date, the Right Certificates are transferrable
only on the registry books of the Rights Agent if surrendered at the principal
office or such other office of the Rights Agent designated for such purpose,
duly endorsed or accompanied by a proper instrument of transfer and with the
appropriate forms and certificates fully executed;

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

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

     Section 17.    Right Certificate Holder Not Deemed a Stockholder.  No
holder, as such, of any Right Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the

<PAGE>
 
holder of Preferred Shares or any other securities of the Company which may at
any time be issuable on the exercise of the Rights represented thereby, nor
shall anything contained herein or in any Right Certificate be construed to
confer upon the holder of any Right Certificate, as such, any of the rights of a
stockholder of the Company or any right to vote for the election of directors or
upon any matter submitted to stockholders at any meeting thereof, or to give or
withhold consent to any corporate action, or to receive notice of meetings or
other actions affecting stockholders (except as provided in Section 24 of this
Agreement), or to receive dividends or subscription rights, or otherwise, until
the Right or Rights evidenced by such Right Certificate shall have been
exercised in accordance with the provisions hereof.

     Section 18.    Concerning the Rights Agent.  The Company agrees to pay to
the Rights Agent reasonable compensation for all services rendered by it
hereunder and, from time to time, on demand of the Rights Agent, its reasonable
expenses and counsel fees and other disbursements incurred in the administration
and execution of this 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.

     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 Right Certificate or
certificate for Common Stock or for other securities of the Company, instrument
of assignment or transfer, power of attorney, endorsement, affidavit, letter,
notice, direction, consent, certificate, statement or other paper or document
believed by it to be genuine and to be signed, executed and, where necessary,
verified or acknowledged, by the proper person or persons.

     Section 19.    Merger or Consolidation or Change of Name of Rights Agent.
Any corporation into which the Rights Agent or any successor Rights Agent may be
merged or with which it may be consolidated, or any corporation resulting from
any merger or consolidation to which the Rights Agent shall be a party, or any
corporation succeeding to the corporate trust 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 would
be eligible for appointment as a successor Rights Agent under the provisions of
Section 21 hereof. In case at the time such successor Rights Agent shall succeed
to the agency created by this Agreement, any of the Right Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the countersignature of the predecessor Rights Agent and deliver such
Right Certificates so countersigned; and in case at that time any of the Right
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Right Certificates either in the name of the predecessor Rights
Agent or in the name of the successor Rights Agent; and in all such cases such
Right Certificate shall have the full force provided in the Right Certificate
and in this Agreement.

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

     Section 20.    Duties of Rights Agent.  The Rights Agent undertakes the
duties and obligations expressly set forth in this Agreement, and no implied
duties or obligations shall be read into this Agreement against the 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 Right Certificates, by their acceptance thereof, shall be
bound:

     (a)  The Rights Agent may consult with legal counsel (who may be legal
counsel for the Company), and the 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 or any
Affiliate or Associate thereof) 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 provided and established by a certificate signed by the Chairman
of the Board, the President or any Vice President and by the Treasurer or any
Assistant Treasurer or the Secretary or any Assistant Secretary of the Company
and delivered to the Rights Agent; and such certificate shall be full
authorization to the Rights Agent for any action taken or suffered in good faith
by it under the provisions of this Agreement in reliance upon such certificate.

     (c)  The Rights Agent shall be liable hereunder only for its own
negligence, bad faith or willful misconduct.

     (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 Right
Certificates (except its countersignature thereof), or be required to verify the
same, but all such statements and recitals are and shall be deemed to have been
made by the Company only.

     (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 Right Certificate (except its countersignature thereof); nor
shall it be responsible for any breach by the Company of any covenant or
condition contained in this Agreement or in any Right Certificates; nor shall it
be responsible for any change in the exercisability of the Rights (including
Rights becoming null and void pursuant to Section 11(a)(iii) hereof); nor shall
it be responsible for any adjustment required under the provisions of

<PAGE>
 
Section 11 or 13 hereof or responsible for the manner, method or amount of any
such adjustment or the ascertaining of the existence of facts that would require
any such adjustment (except with respect to the exercise of Rights evidenced by
Right Certificates after actual notice of any such adjustment); nor shall it by
any act hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any Preferred Shares or other securities to be
issued pursuant to this Agreement or any Right Certificate or as to whether any
Preferred Shares or other securities will, when 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 from the
Chairman of the Board, the President or any Vice President or the Secretary or
the Treasurer of the Company, and 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.

     (h)  The Rights Agent and any stockholder, director, officer or employee of
the Rights Agent may buy, sell or deal in any of the Rights or other securities
of the Company or become pecuniarily interested, or contract with or lend money
to the Company or otherwise act as fully and freely as though it were not Rights
Agent under this Agreement. Nothing herein shall preclude the Rights Agent from
acting in any other capacity for the Company or for any other 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, default, neglect or misconduct of any such attorneys or
agents or for any loss to the Company resulting from any such act, default,
neglect or misconduct, provided reasonable care was exercised in the selection
and continued employment thereof.

     Section 21.  Change of Rights Agent.  The Rights Agent or any successor
Rights Agent may resign and be discharged from its duties under this Agreement
upon 30 days' notice in writing mailed to the Company and to each transfer agent
of the Common Stock by registered or certified mail, and to the holders of the
Right Certificates by first-class mail. The Company may remove the Rights Agent
or any successor Rights Agent upon 30 days' notice in writing, mailed to the
Rights Agent or successor Rights Agent, as the case may be, and to each transfer
agent of the Common Stock by registered or certified mail, and to the holders of
the Right Certificates by first-class mail. If the Rights Agent shall resign or
be removed or shall otherwise become incapable of acting, the Company shall
appoint a successor to the Rights Agent. If the Company shall fail to make such
appointment within a period of 30 days after 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 any Right Certificate (who shall,
with such notice, submit his Right Certificate for inspection by the Company),
then the registered holder of any Right Certificate may apply to any court of
competent

<PAGE>
 
jurisdiction for the appointment of a new Rights Agent. Any successor Rights
Agent, whether appointed by the Company or by such a court, shall be a
corporation, bank or trust company organized and doing business under the laws
of the United States or of any state thereof, in good standing, having its
principal office in the State of Illinois, which is authorized under applicable
laws to exercise corporate trust powers and is subject to supervision or
examination by federal or state authority and which has at the time of its
appointment as Rights Agent a combined capital and surplus of at least
$50,000.000. 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, upon payment of its charges, deliver and
transfer to the successor Rights Agent any property at the time held by it
hereunder, and execute and deliver any further assurance, conveyance, act or
deed necessary for the purpose. Not later than the effective date of any such
appointment the Company shall file notice thereof in writing with the
predecessor Rights Agent and each transfer agent of the Common Stock, and mail a
notice thereof in writing to the registered holders of the Right Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent, as
the case may be.

     Section 22.    Issuance of New Right Certificates.  Notwithstanding any of
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Right Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price and the number or kind or class of shares of stock or
other securities or property purchasable under the Right Certificates made in
accordance with the provisions of this Agreement. In addition, the Company may,
if deemed necessary or appropriate by its Board of Directors, issue Right
Certificates in connection with the sale of shares of Common Stock following the
Distribution Date but prior to the earlier of (x) the redemption of the Rights
or (y) the Expiration Date, other than to or for the benefit of an Acquiring
Person or an Affiliate or Associate thereof.

     Section 22A.   Exchange.

     (a)  The Board may, at its option, at any time after the time that 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)
for shares of Common Stock at an exchange ratio of one share of Common Stock per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction involving either the Common Stock or the Preferred Shares
occurring after the Declaration Date (such exchange ratio being hereinafter
referred to as the "Exchange Ratio"). 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 Company, any employee benefit
plan of the Company or any such Subsidiary, any entity holding Common Stock for
or pursuant to the terms of any such plan or any trustee, administrator or
fiduciary of such a plan), together with all Affiliates and Associates of such
Person, becomes the Beneficial Owner of 50% or more of the Common Stock then
outstanding.

<PAGE>
 
     (b)  Immediately upon the action of the Board ordering the exchange of any
Rights pursuant to Section 22A(a) hereof and without any further action and
without any notice, the right to exercise such Rights shall terminate and the
only right thereafter of a holder of such Rights shall be to receive that number
of shares of Common Stock equal to the number of such Rights held by such holder
multiplied by the Exchange Ratio. 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
shall promptly mail a notice of any such exchange to all of the holders of such
Rights at their last addresses as they appear upon the registry books of the
Rights Agent. Any notice which is mailed in the manner herein provided shall be
deemed given, whether or not the holder receives the notice. Each such notice of
exchange will state the method by which the exchange of the Common Stock 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) held by
each holder of Rights.

     (c)  In any exchange pursuant to this Section 22A, the company, at its
option, may substitute Preferred Shares (or equivalent preferred shares, as such
term is defined in Section 11(b) hereof) for some or all of the Common Stock
exchangeable for Rights, at the initial rate of one one-hundredth of a Preferred
Share (or equivalent preferred share) for each share of Common Stock, as
appropriately adjusted to reflect adjustments in the voting rights of the
Preferred Shares pursuant to the terms thereof, so that the fraction of a
Preferred Share delivered in lieu of each share of Common Stock shall have the
same voting rights as one share of Common Stock.

     (d)  The Board shall not authorize any exchange transaction referred to in
Section 22A(a) hereof unless at the time such exchange is authorized there shall
be sufficient Common Stock or Preferred Shares issued but not outstanding, or
authorized but unissued, to permit the exchange of Rights as contemplated in
accordance with this Section 22A.

     Section 23.    Redemption.
                    
     (a)  The Board of Directors of the Company may, at its option, at any time
prior to the earlier of (i) the occurrence of a Stock Acquisition Date and (ii)
the close of business on the Final Expiration Date, elect to redeem all but not
less than all the then-outstanding Rights at a redemption price of $.01 per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date thereof (such redemption price
being hereinafter referred to as the "Redemption Price"). If following a Stock
Acquisition Date, (x) each Acquiring Person shall have disposed of a sufficient
number of shares of Common Stock such that each such Person (together with its
Affiliates and Associates) is, for a period of at least 30 days, no longer the
Beneficial Owner of 10% or more of the then outstanding Common Stock and (y) no
event described in Section 13 shall have occurred, then (from and after the end
of such 30 day period) the right of redemption shall be reinstated and
thereafter shall continue in accordance with this Section 23 until such time as
there is a subsequent Stock Acquisition Date, and, for purposes of the
provisions of Section 26 of this Agreement, no Stock Acquisition Date shall be
deemed to have occurred. Notwithstanding anything contained in this Agreement to
the contrary, the Rights shall not be exercisable until such time as the
Company's right of redemption under the first sentence of this

<PAGE>
 
Section 23(a) has expired. The Company may, at its option, pay the Redemption
Price in cash, shares of Common Stock (based on the "current market price", as
defined in Section 11(d)(i) hereof, of the Common Stock at the time of
redemption) or any other form of consideration deemed appropriate by the Board
of Directors.

     (b)  Immediately upon the action of the Board of Directors of the Company
electing to redeem the Rights (or, if such redemption is subject to conditions,
immediately upon satisfaction of such conditions), 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. Within ten days after the action of the Board of Directors
ordering the 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 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 Stock. 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.

     Section 24.    Notice of Certain Events.  In case the Company shall
propose, at any time after the Distribution Date, (a) to pay any dividend
payable in stock of any class to the holders of its Preferred Shares or to make
any other distribution described to the holders of its Preferred Shares (other
than a regular periodic cash dividend), or (b) to offer to the holders of its
Preferred Shares rights or warrants to subscribe for or to purchase any
additional Preferred Shares or securities convertible into Preferred Shares, or
(c) to effect any reclassification of its Preferred Shares (other than a
reclassification involving only the subdivision of outstanding Preferred Shares)
or any other event described in Section 11(a)(i) hereof, or (d) to effect any
transaction referred to in Section 13 hereof, 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 Right, in accordance with Section 25 hereof, a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend, distribution of rights or Rights, or the date
on which such reclassification, consolidation, merger, sale, transfer,
liquidation, dissolution, or winding up is to take place and the date of
participation therein by the holders of Common Stock and/or 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), (b) or (e) above at least 20 days prior to the
record date for determining holders of the Common Stock for purposes of such
action, and in the case of any such other action, at least 20 days prior to the
date of the taking of such proposed action or the date of participation therein
by the holders of Common Stock and/or Preferred Shares, whichever shall be
earlier.

     In case any of the events set forth in Section 11(a)(ii) hereof shall
occur, then, and in each such case, the Company shall as soon as practicable
thereafter give each holder of a Right, in accordance with Section 25 hereof, a
notice of the occurrence of such event, which shall specify the event and its
consequences under Section 11(a)(ii), (iii) and (iv) hereof.

     The failure to give notice required by this Section 24 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.

<PAGE>
 
     Section 25.    Notices.  Notices or demands authorized by this Agreement to
be given or made by the Rights Agent or by the holder of any Right Certificate
to or on the Company shall be sufficiently given or made if sent by first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

          Information Resources, Inc.
          150 North Clinton Street
          Chicago, Illinois  60606
          Attention:  Corporate Secretary

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

          Harris Trust and Savings Bank
          311 West Monroe Street
          Chicago, Illinois 60690
          Attention:  Shareholder Services Department

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

     Section 26.    Supplements and Amendments.  The Company and the Rights
Agent may from time to time supplement or amend this Agreement without the
approval of any holders of Right 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 (provided that
any amendment made pursuant to clause (i) or (ii) hereof after the Stock
Acquisition Date shall not materially adversely affect the interests of the
holders of Rights Certificates (other than an Acquiring Person or any Affiliate
or Associate thereof)), (iii) prior to the Stock Acquisition Date, or under the
other circumstances under which, pursuant to Section 23, a Stock Acquisition
Date will be deemed not to have occurred, to effect any other change or
modification which the Company may deem necessary or desirable, or (iv) after
the Stock Acquisition Date, to make any other provisions in regard to matters or
questions arising hereunder which the Company may deem necessary or desirable
and which shall not adversely affect the interests of the holders of Right
Certificates (other than an Acquiring Person or any Affiliate or Associate
thereof). Notwithstanding anything contained in this Agreement to the contrary,
this Agreement may not be amended or supplemented to reinstate a right of
redemption if the Rights are not then redeemable. Upon the delivery of a
certificate from an appropriate officer of the Company which states that the
proposed supplement or amendment has been approved by the Company's Board of
Directors and is in compliance with the terms of this Section 26, 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

<PAGE>
interests under this Agreement. Prior to the Distribution Date, the interests of
the holders of the Rights shall be deemed coincident with the interests of the
holders of the Common Stock.

     Section 27.    Successors.  All the covenants and provisions of this
Agreement by or for the benefit of the Company or the Rights Agent shall bind
and inure to the benefit of their respective successors and assigns hereunder.

     Section 28.    Benefits of this Agreement.  Nothing in this Agreement shall
be construed to give to any person or corporation other than the Company, the
Rights Agent and the registered holders of the Right Certificates (and, prior to
the Distribution Date, of the Common Stock of the Company) 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 Right Certificates (and, prior to the Distribution
Date, of the Common Stock of the Company).

     Section 29.    Severability.  If any term, provision, covenant or
restriction of this Agreement or the Rights is held by a court of competent
jurisdiction or other authority to be invalid, void or unenforceable, the
remainder of this Agreement and the Rights shall remain in full force and effect
and shall in no way be affected, impaired or invalidated.

     Section 30.    Governing Law.  This Agreement and each Right Certificate
issued hereunder shall be deemed to be a contract made under the laws of the
State of Delaware and for all purposes shall be governed by and construed in
accordance with the laws of such state applicable to contracts to be made and
performed entirely within such state.

     Section 31.    Counterparts.  This Agreement may be executed in any number
of counterparts and each of such counterparts shall for all purposes be deemed
to be an original, and all such counterparts shall together constitute but one
and the same instrument.

     Section 32.    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.

                           [intentionally left blank]

<PAGE>
 
     IN WITNESS WHEREOF, the parties hereto have caused this Amended and
Restated Agreement to be duly executed and their respective corporate seals to
be hereunto affixed and attested, all as of the date and the year specified
above.


Attest:                             INFORMATION RESOURCES, INC.


   /s/ Edward S. Berger                /s/ Gian M. Fulgoni
By__________________________        By______________________________
  Title: Secretary                    Title: Chief Executive Officer


Attest:                             HARRIS TRUST & SAVINGS BANK


                                       /s/ Keith A. Bradley
By_________________________         By_____________________________
  Title:                              Title: Vice President
<PAGE>
 
                                                                       Exhibit A
                                                                       ---------

                                     FORM

                                      of

                          CERTIFICATE OF DESIGNATIONS

                                      of

                    SERIES A PARTICIPATING PREFERRED STOCK

                                      of

                          INFORMATION RESOURCES, INC.

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

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

     Information Resources, Inc., a corporation organized and existing under the
General Corporation Law of the State of Delaware (hereinafter called the
"Corporation"), hereby certifies that the following resolution was adopted by
the Board of Directors of the Corporation as required by Section 151 of the
General Corporation Law at a meeting duly called and held on March 2, 1989:

     RESOLVED, that pursuant to the authority granted to and vested in the Board
of Directors of this Corporation (hereinafter called the "Board of Directors" or
the "Board") in accordance with the provisions of the Certificate of
Incorporation, the Board of Directors hereby creates a series of Preferred
Stock, par value $0.01 per share (the "Preferred Stock"), of the Corporation and
hereby states the designation and number of shares, and fixes the relative
rights, preferences, and limitations thereof as follows:

     Series A Participating Preferred Stock:

     Section 1.  Designation and Amount.  The shares of such series shall be
designated as "Series A Participating Preferred Stock" (the "Series A Preferred
Stock") and the number of shares constituting the Series A Preferred Stock shall
be 200,000.  Such number of shares may be increased or decreased by resolution
of the Board of Directors; provided, that no decrease shall reduce the number of
shares of Series A Preferred Stock to a number less than the number of shares
then outstanding plus the number of shares reserved for issuance upon the
exercise of outstanding options, rights or warrants or upon the conversion of
any outstanding securities issued by the Corporation convertible into Series A
Preferred Stock.

                                      A-1
<PAGE>
 
     Section 2.  Dividends and Distributions.
                 --------------------------- 

     (A) The holders of shares of Series A Preferred Stock, in preference to the
holders of Common Stock, par value $.01 per share (the "Common Stock"), of the
Corporation, and of any other junior stock, shall be entitled to receive, when,
as and if declared by the Board of Directors out of funds legally available for
the purpose, quarterly dividends payable in cash on the first day of March,
June, September and December in each year (each such date being referred to
herein as a "Quarterly Dividend Payment Date"), commencing on the first
Quarterly Dividend Payment Date after the first issuance of a share or fraction
of a share of Series A Preferred Stock, in an amount per share (rounded to the
nearest cent) equal to the greater of (a) $1.00 or (b) subject to the provision
for adjustment hereinafter set forth, 100 times the aggregate per share amount
of all cash dividends, and 100 times the aggregate per share amount (payable in
kind) of all non-cash dividends or other distributions, other than a dividend
payable in shares of Common Stock or a subdivision of the outstanding shares of
Common Stock (by reclassification or otherwise), declared on the Common Stock
since the immediately preceding Quarterly Dividend Payment Date or, with respect
to the first Quarterly Dividend Payment Date, since the first issuance of any
share or fraction of a share of Series A Preferred Stock.  In the event the
Corporation shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock), then in each
such case the amount to which holders of shares of Series A Preferred Stock were
entitled immediately prior to such event under clause (b) of the preceding
sentence shall be adjusted by multiplying such amount by a fraction, the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

     (B) The Corporation shall declare a dividend or distribution on the Series
A Preferred Stock as provided in paragraph (A) of this Section immediately after
it declares a dividend or distribution of the Common Stock (other than a
dividend payable in shares of Common Stock); provided that, in the event no
dividend or distribution shall have been declared on the Common Stock during the
period between any Quarterly Dividend Payment Date and the next subsequent
Quarterly Dividend Payment Date, a dividend of $1.00 per share on the Series A
Preferred Stock shall nevertheless be payable on such subsequent Quarterly
Dividend Payment Date.

     (C) Dividends shall begin to accrue and be cumulative on outstanding shares
of Series A Preferred Stock from the Quarterly Dividend Payment Date next
preceding the date of issue of such shares, unless the date of issue of such
shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which case dividends on such shares shall begin to accrue from the date
of issue of such shares, or unless the date of issue is a Quarterly Dividend
Payment Date or is a date after the record date for the determination of holders
of shares of Series A Preferred Stock entitled to receive a quarterly dividend
and before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue and be cumulative from such Quarterly Dividend
Payment Date.  Accrued but unpaid dividends shall not bear interest.  Dividends
paid on the shares

                                      A-2
<PAGE>
 
of Series A Preferred Stock in an amount less than the total amount of such
dividends at the time accrued and payable on such shares shall be allocated pro
rata on share-by-share basis among all such shares at the time outstanding.  The
Board of Directors may fix a record date for the determination of holders of
shares of Series A Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be not more than 60 days
prior to the date fixed for the payment thereof.

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

     (A) Subject to the provision for adjustment hereinafter set forth, each
share of Series A Preferred Stock shall entitle the holder thereof to 100 votes
on all matters submitted to a vote of the stockholders of the Corporation.  In
the event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Series A
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

     (B) Except as otherwise provided herein, in the Certificate of
Incorporation, in any other Certificate of Designations creating a series of
Preferred Stock or any similar stock, or by law, the holders of shares of Common
Stock and any other capital stock of the Corporation having general voting
rights shall vote together as one class on all matters submitted to a vote of
stockholders of the Corporation.

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

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

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

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

                                      A-3
<PAGE>
 
               (ii) declare or pay dividends, or make any other distributions,
          on any shares of stock ranking on a parity (either as to dividends or
          upon liquidation, dissolution or winding up) with the Series A
          Preferred Stock, except dividends paid ratably on the Series A
          Preferred Stock and all such parity stock on which dividends are
          payable or in arrears in proportion to the total amounts to which the
          holders of all such shares are then entitled;

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

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

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

     Section 5.  Reacquired Shares.  Any shares of Series A Preferred Stock
purchased or otherwise acquired by the Corporation in any manner whatsoever
shall be retired and cancelled promptly after the acquisition thereof.  All such
shares shall upon their cancellation become authorized but unissued shares of
Preferred Stock and may be reissued as part of a new series of Preferred Stock
subject to the conditions and restrictions on issuance set forth herein, in the
Certificate of Incorporation or in any other Certificate of Designations
creating a series of Preferred Stock or any similar stock or as otherwise
required by law.

     Section 6.  Liquidation, Dissolution or Winding Up.  Upon any
liquidation, dissolution or winding up of the Corporation, no distribution shall
be made (1) to the holders of shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Series A
Preferred Stock unless, prior thereto, the holders of shares of Series A
Preferred Stock shall have received $100 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not declared,
to the date of such payment, provided that the holders of shares of

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

     Section 7.  Consolidation, Merger, etc. In case the Corporation shall
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other properly, then in any such case each share of
Series A Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 100 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series A Preferred Stock shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

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

     Section 9.  Amendment. The Certificate of Incorporation of the Corporation
shall not be amended in any manner which would materially alter or change the
powers, preferences or special rights of the Series A Preferred Stock so as to
affect them adversely without the affirmative vote of the holders of at least
two thirds of the outstanding shares of Series A Preferred Stock, voting
together as a single class.

                                      A-5
<PAGE>

     IN WITNESS WHEREOF, this Certificate of Designations is executed on behalf
of the Corporation by its Chairman of the Board and attested by its Secretary as
of this 2nd day of March, 1989.

                                    INFORMATION RESOURCES, INC.


                                    By:
                                       --------------------------------
                                         Gian Fulgoni, President

[SEAL]                              ATTEST:


                                       --------------------------------
                                         Edward S. Berger, Secretary


                                      A-6

<PAGE>
 
                                                                       Exhibit B
                                                                       ---------

                          (Form of Right Certificate)


Certificate No. R-                                     __________________ Rights


     NOT EXERCISABLE AFTER OCTOBER 27, 2007 OR EARLIER IF NOTICE OF REDEMPTION
     IS GIVEN.  THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE
     COMPANY, AT $.01 PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.
     UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING
     PERSON OR ANY ASSOCIATES OR AFFILIATES THEREOF (AS SUCH TERMS ARE DEFINED
     IN THE RIGHTS AGREEMENT) OR ANY SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME
     NULL AND VOID. [THE RIGHTS REPRESENTED BY THIS RIGHT CERTIFICATE ARE OR
     WERE BENEFICIALLY OWNED BY A PERSON WHO IS, WAS OR BECAME AN ACQUIRING
     PERSON OR AN AFFILIATE OR AN ASSOCIATE OF AN ACQUIRING PERSON (AS THOSE
     TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).  THIS RIGHT CERTIFICATE AND THE
     RIGHTS REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES
     SPECIFIED IN THE RIGHTS AGREEMENT.]/1/*


                               Right Certificate

                          INFORMATION RESOURCES, 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 Rights Agreement dated as of March 2, 1989, and Amended and Restated as of
October 27, 1997 (the "Rights Agreement") between Information Resources, Inc., a
Delaware corporation (the "Company"), and Harris Trust and Savings Bank, an

- ----------------------
     *  The portion of the legend in brackets shall be inserted only if
        applicable and shall replace the preceding sentence.


                                      B-1
<PAGE>
 
Illinois national banking corporation (the "Rights Agent"), to purchase from the
Company at any time after the Distribution Date and prior to 5:00 p.m. (Chicago,
Illinois time) on the Expiration Date (as such terms are defined in the Rights
Agreement) at the principal office or such other office of the Rights Agent
designated for such purpose, or of its successors as Rights Agent, one one -
hundredth of a fully paid, non-assessable share of Series A Participating
Preferred Stock, $0.01 par value (the "Preferred Shares"), of the Company, at a
purchase price of $60 per one one-hundredth of a Preferred Share (the "Purchase
Price"), upon presentation and surrender of this Right Certificate with the
appropriate Form of Election to Purchase Shares duly executed. The number of
Rights evidenced by this Right Certificate (and the number of shares which may
be purchased upon exercise thereof) set forth above, and the Purchase Price set
forth above, have been determined as of March 15, 1989.

     As provided in the Rights Agreement, the Purchase Price and the number of
one one-hundredths of a Preferred Share or other securities which may be
purchased upon the exercise of the Rights evidenced by this Right Certificate
are subject to modification and adjustment upon the happening of certain events,
and in certain circumstances may be exercised to purchase securities of issuers
other than the Company.

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

                                      B-2
<PAGE>
 
request mailed to it at 311 West Monroe Street, Chicago, Illinois 60690,
Attention: Shareholder Services Department.

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

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Right Certificate may be redeemed by the Company at its option at a
redemption price of $.01 per Right (payable in cash, shares of Common Stock or
other consideration), appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after the date hereof.

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Right Certificate (and the Rights Agreement itself) may be amended by
action of the Company's Board of Directors.

     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-hundredth, 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.

     No holder of this Right Certificate, as such, shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of Preferred Shares or
of any other securities of the Company

                                      B-3
<PAGE>
 
which may at any time be issuable on the exercise hereof, nor shall anything
contained in the Rights Agreement or herein be construed to confer upon the
holder hereof, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
stockholders (except as provided in the Rights Agreement), or to receive
dividends or subscription rights, or otherwise, until the Right or Rights
evidenced by this Right Certificate shall have been exercised as provided in the
Rights Agreement.

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

     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal. Dated as of ___________________________, 19 ______.


ATTEST:                             INFORMATION RESOURCES, INC.


By: ______________________________  By: ________________________________
              Secretary                              Title:


Countersigned:

HARRIS TRUST AND SAVINGS BANK


By: ______________________________
         Authorized Signature

                                      B-4

<PAGE>

                 [Form of Reverse Side of Right Certificate]

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

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

          FOR VALUE RECEIVED___________________________________________________
hereby sells, assigns and transfers unto_______________________________________
_______________________________________________________________________________


                 (Please print name and address of transferee)

this Right Certificate, together with all right, title and interest therein, and
does hereby irrevocably constitute and appoint_________________________________
_______________________________________ Attorney, to transfer the within Right
Certificate on the books of the within-named Company, with full power of
substitution.

DATED: ____________________, 19 __

                                     ________________________________________
                                                    Signature

Signature Guaranteed:
__________________________________


                                  Certificate
                                  -----------

     The undersigned hereby certifies by checking the appropriate boxes that:
     (1) this Right Certificate [   ] is [   ] is 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
pursuant to the Rights Agreement);

                                      B-5

<PAGE>

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


Dated: ______________________, 19__    ________________________________________
                                                      Signature


Signature Guaranteed:

___________________________________



                                     NOTICE
                                     ------

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

                                      B-6
<PAGE>

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

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

To Information Resources, Inc.:

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

Please insert social security
or other identifying number


________________________________________________________________________________
                        (Please print name and address)

________________________________________________________________________________

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

Please insert social security
or other identifying number

________________________________________________________________________________
                        (Please print name and address)

________________________________________________________________________________

Dated: ______________________, 19__

                                         _______________________________________
                                                        Signature

Signature Guaranteed:
___________________________________

                                      B-7
<PAGE>

                                  Certificate
                                  -----------

     The undersigned hereby certifies by checking the appropriate boxes that:
     (1)  the Rights evidenced by this Right 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);
     (2)  after due inquiry and to the best knowledge of the undersigned, it
[   ] did [   ] did not acquire the Rights evidenced by this Right Certificate
from any Person who is, was or became an Acquiring Person or an Affiliate or
Associate of an Acquiring Person.

Dated: _____________________, 19___     _______________________________________
                                                       Signature

Signature Guaranteed:

___________________________________

                                     NOTICE
                                     ------

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

                                      B-8
<PAGE>
 
                                                                       Exhibit C
                                                                       ---------

                          INFORMATION RESOURCES, INC.
                          ---------------------------

                 SUMMARY OF RIGHTS TO PURCHASE PREFERRED SHARES

     On March 2, 1989 (the "Declaration Date"), the Board of Directors of
Information Resources, Inc. (the "Company") declared a dividend distribution of
one Right for each outstanding share of Common Stock of the Company. The
dividend is payable on March 15, 1989 to the stockholders of record as of the
close of business on such date (the "Record Date"). Each Right entitles the
registered holder to purchase from the Company one one-hundredth of a share of
the Company's Series A Participating Preferred Stock, $0.01 par value (the
"Preferred Shares") at a price of $60 per one one-hundredth of a share (the
"Purchase Price"), subject to adjustment. The description and terms of the
Rights are set forth in a Rights Agreement (the "Rights Agreement") between the
Company and Harris Trust and Savings Bank (the "Rights Agent").

     Until close of business on the earliest of (i) the day of the first public
announcement by the Company or an Acquiring Person of facts establishing that a
person or group of affiliated or associated persons (an "Acquiring Person") has
acquired, or obtained the right to acquire, 15% or more of the outstanding
shares of Common Stock of the Company or (ii) the tenth day (or such later date
as may be determined by action of the Board) after the date of the commencement
of, or the first public announcement of the intention to commence, a tender or
an exchange offer by any person (other than the Company) to acquire (when added
to any shares as to which such person is the beneficial owner immediately prior
to such commencement) 15% or more of the issued and outstanding shares of Common
Stock, the earliest of such dates being called the "Distribution Date," the
Rights will be evidenced, with respect to any of the Company's Common Stock
certificates outstanding as of the Record Date, by such Common Stock certificate
and this Summary.

     The Rights Agreement provides that, until the Distribution Date, the Rights
will be transferred with and only with the Company's Common Stock. New Common
Stock certificates issued after the Record Date upon transfer or new issuance of
the Company's Common Stock will

                                      C-1
<PAGE>
 
contain a notation incorporating the Rights Agreement by reference. Until the
Distribution Date, the surrender for transfer of any of the Common Stock
certificates outstanding as of the Record Date will also constitute the transfer
of the Rights associated with the Common Stock represented by such certificate
and the number of Rights associated with each share of Common Stock shall be
proportionately adjusted in the event of any dividend in Common Stock on the
Common Stock or subdivision, combination or reclassification of the Common
Stock. As soon as practicable following the Distribution Date, separate
certificates evidencing the Rights ("Right Certificates") will be mailed to
holders of record of the Company's Common Stock as of the close of business on
the Distribution Date and such separate certificates alone will evidence the
Rights.

     The Rights are not exercisable until the Distribution Date. The Rights will
expire on October 27, 2007 unless earlier redeemed by the Company as described
below.

     The Purchase Price payable, and the number of Preferred Shares or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of the Preferred
Shares, (ii) upon the grant to holders of Preferred Shares of certain rights or
warrants to subscribe for shares of Preferred Shares or convertible securities
at less than the current market Price of the Preferred Shares or (iii) upon the
distribution to holders of Preferred Shares of evidences of indebtedness or
assets (excluding regular periodic cash dividends or dividends payable in
Preferred Shares) or of subscription rights or warrants (other than those
referred to above).

     In the event that the Company is acquired in a merger or other business
combination or more than 50% of its consolidated assets or earning power are
sold, proper provision shall be made so that each holder of a Right shall
thereafter have the right to receive, upon the exercise thereof at the then
current exercise price of the Right, that number of shares of common stock of
the surviving company (or its parent company) which at the time of such
transaction would have a market value of two times the exercise price of the
Right. In the event that a person becomes an Acquiring Person, the Rights
Agreement provides proper provision would be made so that each holder of a
Right, other

                                      C-2
<PAGE>
 
than the Acquiring Person (whose Rights would thereafter be null and void) and
certain of its transferees, would thereafter have the right to receive upon
exercise that number of shares of the Company's Common Stock having a market
value of two times the exercise price of the Right.

     At any time after a person becomes an Acquiring Person and prior to the
acquisition by such person of 50% or more of the outstanding Common Stock of the
Company, the Board of Directors may exchange the Rights (other than Rights owned
by such person), in whole or in part, at an exchange ratio of one share of
Common Stock, or one one-hundredth of a Preferred Share (or of a share of a
class or series of the Company's preferred stock having equivalent rights,
preferences and privileges), per Right (subject to adjustment).

     Preferred Shares purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 per share but will be entitled to an
aggregate dividend of 100 times the dividend declared per share of Common Stock.
In the event of liquidation, the holders of the Preferred Shares will be
entitled to a minimum preferential liquidation payment of $100 per share but
will be entitled to an aggregate payment of 100 times the payment made per share
of Common Stock. In addition to certain voting rights required by the Company's
Certificate of Incorporation, each Preferred Share will have 100 votes, voting
together with the Common Stock. Finally, in the event of any merger,
consolidation or other transaction in which shares of Common Stock are
exchanged, each Preferred Share will be entitled to receive 100 times the amount
received per share of Common Stock. These rights are protected by customary
antidilution provisions.

     Because of the nature of the Preferred Shares' dividend, liquidation and
voting rights, the value of the one one-hundredth interest in a Preferred Share
purchasable upon exercise of each Right should approximate the value of one
share of Common Stock.

     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price. No fractional

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<PAGE>
 
shares (other than fractions that are integral multiples of one one-hundredth)
will be issued and, in lieu thereof, an adjustment in cash will be made based on
the market price of the Preferred Shares on the last trading date prior to the
date of exercise.

     At any time prior to the date an Acquiring Person has become such, the
Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $.01 per Right (payable in cash, shares of Common Stock or
other consideration), appropriately adjusted to reflect any stock split, stock
dividend or similar transaction occurring after the date hereof (the "Redemption
Price"). Under certain circumstances, the Rights may also be redeemed after an
Acquiring Person has become such if such person thereafter reduces its holdings
to less than 10% for at least 30 days. Immediately upon the action of the Board
of Directors of the Company electing to redeem the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

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

     At any time prior to the time that a person has become an Acquiring Person,
the Company may amend the Rights Agreement and the terms of the Rights in any
manner deemed necessary or desirable. Thereafter, the Rights Agreement and the
terms of the Rights may be amended by the Company under certain circumstances,
including to provide additional benefits to the holders of the Rights.

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